Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

54 files changed, 28558 insertions, 0 deletions

diff --git a/src/ui/tools/arc-tool.cpp b/src/ui/tools/arc-tool.cpp
new file mode 100644
index 0000000..12143bf
--- /dev/null
+++ b/src/ui/tools/arc-tool.cpp
@@ -0,0 +1,455 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Ellipse drawing context.
+ */
+/* Authors:
+ *   Mitsuru Oka
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Johan Engelen <johan@shouraizou.nl>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2000-2006 Authors
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#include <glibmm/i18n.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "message-context.h"
+#include "preferences.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "include/macros.h"
+
+#include "object/sp-ellipse.h"
+#include "object/sp-namedview.h"
+
+#include "ui/icon-names.h"
+#include "ui/modifiers.h"
+#include "ui/tools/arc-tool.h"
+#include "ui/shape-editor.h"
+#include "ui/tools/tool-base.h"
+
+#include "xml/repr.h"
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+ArcTool::ArcTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/shapes/arc", "arc.svg")
+    , arc(nullptr)
+{
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    this->shape_editor = new ShapeEditor(desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection = selection->connectChanged(
+        sigc::mem_fun(this, &ArcTool::selection_changed)
+    );
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/shapes/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/shapes/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+ArcTool::~ArcTool()
+{
+    ungrabCanvasEvents();
+    this->finishItem();
+    this->sel_changed_connection.disconnect();
+
+    this->enableGrDrag(false);
+
+    this->sel_changed_connection.disconnect();
+
+    delete this->shape_editor;
+    this->shape_editor = nullptr;
+
+    /* fixme: This is necessary because we do not grab */
+    if (this->arc) {
+        this->finishItem();
+    }
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ */
+void ArcTool::selection_changed(Inkscape::Selection* selection) {
+    this->shape_editor->unset_item();
+    this->shape_editor->set_item(selection->singleItem());
+}
+
+
+bool ArcTool::item_handler(SPItem* item, GdkEvent* event) {
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                this->setup_for_drag_start(event);
+            }
+            break;
+            // motion and release are always on root (why?)
+        default:
+            break;
+    }
+
+    return ToolBase::item_handler(item, event);
+}
+
+bool ArcTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    bool handled = false;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                dragging = true;
+
+                this->center = this->setup_for_drag_start(event);
+
+                /* Snap center */
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(this->center, Inkscape::SNAPSOURCE_NODE_HANDLE);
+
+                grabCanvasEvents();
+
+                handled = true;
+                m.unSetup();
+            }
+            break;
+        case GDK_MOTION_NOTIFY:
+            if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
+                if ( this->within_tolerance
+                     && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                     && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                    break; // do not drag if we're within tolerance from origin
+                }
+                // Once the user has moved farther than tolerance from the original location
+                // (indicating they intend to draw, not click), then always process the
+                // motion notify coordinates as given (no snapping back to origin)
+                this->within_tolerance = false;
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+                this->drag(motion_dt, event->motion.state);
+
+                gobble_motion_events(GDK_BUTTON1_MASK);
+
+                handled = true;
+            } else if (!this->sp_event_context_knot_mouseover()){
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point motion_dt(_desktop->w2d(motion_w));
+                m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                m.unSetup();
+            }
+            break;
+        case GDK_BUTTON_RELEASE:
+            this->xp = this->yp = 0;
+            if (event->button.button == 1) {
+                dragging = false;
+                this->discard_delayed_snap_event();
+
+                if (!this->within_tolerance) {
+                    // we've been dragging, finish the arc
+                    this->finishItem();
+                } else if (this->item_to_select) {
+                    // no dragging, select clicked item if any
+                    if (event->button.state & GDK_SHIFT_MASK) {
+                        selection->toggle(this->item_to_select);
+                    } else {
+                        selection->set(this->item_to_select);
+                    }
+                } else {
+                    // click in an empty space
+                    selection->clear();
+                }
+
+                this->xp = 0;
+                this->yp = 0;
+                this->item_to_select = nullptr;
+                handled = true;
+            }
+            ungrabCanvasEvents();
+            break;
+
+        case GDK_KEY_PRESS:
+            switch (get_latin_keyval (&event->key)) {
+                case GDK_KEY_Alt_L:
+                case GDK_KEY_Alt_R:
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+                case GDK_KEY_Meta_R:
+                    if (!dragging) {
+                        sp_event_show_modifier_tip(this->defaultMessageContext(), event,
+                                                   _("<b>Ctrl</b>: make circle or integer-ratio ellipse, snap arc/segment angle"),
+                                                   _("<b>Shift</b>: draw around the starting point"),
+                                                   nullptr);
+                    }
+                    break;
+
+                case GDK_KEY_x:
+                case GDK_KEY_X:
+                    if (MOD__ALT_ONLY(event)) {
+                        _desktop->setToolboxFocusTo("arc-rx");
+                        handled = true;
+                    }
+                    break;
+
+                case GDK_KEY_Escape:
+                    if (dragging) {
+                        dragging = false;
+                        this->discard_delayed_snap_event();
+                        // if drawing, cancel, otherwise pass it up for deselecting
+                        this->cancel();
+                        handled = true;
+                    }
+                    break;
+
+                case GDK_KEY_space:
+                    if (dragging) {
+                        ungrabCanvasEvents();
+                        dragging = false;
+                        this->discard_delayed_snap_event();
+
+                        if (!this->within_tolerance) {
+                            // we've been dragging, finish the arc
+                            this->finishItem();
+                        }
+                        // do not return true, so that space would work switching to selector
+                    }
+                    break;
+
+                case GDK_KEY_Delete:
+                case GDK_KEY_KP_Delete:
+                case GDK_KEY_BackSpace:
+                    handled = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
+        case GDK_KEY_RELEASE:
+            switch (event->key.keyval) {
+                case GDK_KEY_Alt_L:
+                case GDK_KEY_Alt_R:
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+                case GDK_KEY_Meta_R:
+                    this->defaultMessageContext()->clear();
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    if (!handled) {
+    	handled = ToolBase::root_handler(event);
+    }
+
+    return handled;
+}
+
+void ArcTool::drag(Geom::Point pt, guint state) {
+    if (!this->arc) {
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return;
+        }
+
+        // Create object
+        Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+        repr->setAttribute("sodipodi:type", "arc");
+
+        // Set style
+        sp_desktop_apply_style_tool(_desktop, repr, "/tools/shapes/arc", false);
+
+        auto layer = currentLayer();
+        this->arc = SP_GENERICELLIPSE(layer->appendChildRepr(repr));
+        Inkscape::GC::release(repr);
+        this->arc->transform = layer->i2doc_affine().inverse();
+        this->arc->updateRepr();
+    }
+
+    auto confine = Modifiers::Modifier::get(Modifiers::Type::TRANS_CONFINE)->active(state);
+    // Third is weirdly wrong, surely incrememnts should do something else.
+    auto circle_edge = Modifiers::Modifier::get(Modifiers::Type::TRANS_INCREMENT)->active(state);
+
+    Geom::Rect r = Inkscape::snap_rectangular_box(_desktop, this->arc, pt, this->center, state);
+
+    Geom::Point dir = r.dimensions() / 2;
+
+
+    if (circle_edge) {
+        /* With Alt let the ellipse pass through the mouse pointer */
+        Geom::Point c = r.midpoint();
+
+        if (!confine) {
+            if (fabs(dir[Geom::X]) > 1E-6 && fabs(dir[Geom::Y]) > 1E-6) {
+                Geom::Affine const i2d ( (this->arc)->i2dt_affine() );
+                Geom::Point new_dir = pt * i2d - c;
+                new_dir[Geom::X] *= dir[Geom::Y] / dir[Geom::X];
+                double lambda = new_dir.length() / dir[Geom::Y];
+                r = Geom::Rect (c - lambda*dir, c + lambda*dir);
+            }
+        } else {
+            /* with Alt+Ctrl (without Shift) we generate a perfect circle
+               with diameter click point <--> mouse pointer */
+                double l = dir.length();
+                Geom::Point d (l, l);
+                r = Geom::Rect (c - d, c + d);
+        }
+    }
+
+    this->arc->position_set(
+        r.midpoint()[Geom::X], r.midpoint()[Geom::Y],
+        r.dimensions()[Geom::X] / 2, r.dimensions()[Geom::Y] / 2);
+
+    double rdimx = r.dimensions()[Geom::X];
+    double rdimy = r.dimensions()[Geom::Y];
+
+    Inkscape::Util::Quantity rdimx_q = Inkscape::Util::Quantity(rdimx, "px");
+    Inkscape::Util::Quantity rdimy_q = Inkscape::Util::Quantity(rdimy, "px");
+    Glib::ustring xs = rdimx_q.string(_desktop->namedview->display_units);
+    Glib::ustring ys = rdimy_q.string(_desktop->namedview->display_units);
+
+    if (state & GDK_CONTROL_MASK) {
+        int ratio_x, ratio_y;
+        bool is_golden_ratio = false;
+
+        if (fabs (rdimx) > fabs (rdimy)) {
+            if (fabs(rdimx / rdimy - goldenratio) < 1e-6) {
+                is_golden_ratio = true;
+            }
+
+            ratio_x = (int) rint (rdimx / rdimy);
+            ratio_y = 1;
+        } else {
+            if (fabs(rdimy / rdimx - goldenratio) < 1e-6) {
+                is_golden_ratio = true;
+            }
+
+            ratio_x = 1;
+            ratio_y = (int) rint (rdimy / rdimx);
+        }
+
+        if (!is_golden_ratio) {
+            this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                    _("<b>Ellipse</b>: %s &#215; %s (constrained to ratio %d:%d); with <b>Shift</b> to draw around the starting point"),
+                    xs.c_str(), ys.c_str(), ratio_x, ratio_y);
+        } else {
+            if (ratio_y == 1) {
+                this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                        _("<b>Ellipse</b>: %s &#215; %s (constrained to golden ratio 1.618 : 1); with <b>Shift</b> to draw around the starting point"),
+                        xs.c_str(), ys.c_str());
+            } else {
+                this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                        _("<b>Ellipse</b>: %s &#215; %s (constrained to golden ratio 1 : 1.618); with <b>Shift</b> to draw around the starting point"),
+                        xs.c_str(), ys.c_str());
+            }
+        }
+    } else {
+        this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Ellipse</b>: %s &#215; %s; with <b>Ctrl</b> to make circle, integer-ratio, or golden-ratio ellipse; with <b>Shift</b> to draw around the starting point"), xs.c_str(), ys.c_str());
+    }
+}
+
+void ArcTool::finishItem() {
+    this->message_context->clear();
+
+    if (this->arc != nullptr) {
+        if (this->arc->rx.computed == 0 || this->arc->ry.computed == 0) {
+            this->cancel(); // Don't allow the creating of zero sized arc, for example when the start and and point snap to the snap grid point
+            return;
+        }
+
+        this->arc->updateRepr();
+        this->arc->doWriteTransform(this->arc->transform, nullptr, true);
+
+        _desktop->getSelection()->set(this->arc);
+
+        DocumentUndo::done(_desktop->getDocument(), _("Create ellipse"), INKSCAPE_ICON("draw-ellipse"));
+
+        this->arc = nullptr;
+    }
+}
+
+void ArcTool::cancel() {
+    _desktop->getSelection()->clear();
+    ungrabCanvasEvents();
+
+    if (this->arc != nullptr) {
+        this->arc->deleteObject();
+        this->arc = nullptr;
+    }
+
+    this->within_tolerance = false;
+    this->xp = 0;
+    this->yp = 0;
+    this->item_to_select = nullptr;
+
+    DocumentUndo::cancel(_desktop->getDocument());
+}
+
+}
+}
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/arc-tool.h b/src/ui/tools/arc-tool.h
new file mode 100644
index 0000000..312f943
--- /dev/null
+++ b/src/ui/tools/arc-tool.h
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_ARC_CONTEXT_H
+#define SEEN_ARC_CONTEXT_H
+
+/*
+ * Ellipse drawing context
+ *
+ * Authors:
+ *   Mitsuru Oka
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2000-2002 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Mitsuru Oka
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+
+#include <2geom/point.h>
+#include <sigc++/connection.h>
+
+#include "ui/tools/tool-base.h"
+
+class SPItem;
+class SPGenericEllipse;
+
+namespace Inkscape {
+    class Selection;
+}
+
+#define SP_ARC_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::ArcTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_ARC_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::ArcTool*>(obj) != NULL)
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class ArcTool : public ToolBase {
+public:
+    ArcTool(SPDesktop *desktop);
+    ~ArcTool() override;
+
+	bool root_handler(GdkEvent* event) override;
+	bool item_handler(SPItem* item, GdkEvent* event) override;
+private:
+	SPGenericEllipse *arc;
+
+    Geom::Point center;
+
+    sigc::connection sel_changed_connection;
+
+	void selection_changed(Inkscape::Selection* selection);
+
+	void drag(Geom::Point pt, guint state);
+	void finishItem();
+	void cancel();
+};
+
+}
+}
+}
+
+#endif /* !SEEN_ARC_CONTEXT_H */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/box3d-tool.cpp b/src/ui/tools/box3d-tool.cpp
new file mode 100644
index 0000000..3efe20f
--- /dev/null
+++ b/src/ui/tools/box3d-tool.cpp
@@ -0,0 +1,566 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 3D box drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2007      Maximilian Albert <Anhalter42@gmx.de>
+ * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
+ * Copyright (C) 2000-2005 authors
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "message-context.h"
+#include "perspective-line.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+
+#include "include/macros.h"
+
+#include "object/box3d-side.h"
+#include "object/box3d.h"
+#include "object/sp-defs.h"
+#include "object/sp-namedview.h"
+
+#include "ui/icon-names.h"
+#include "ui/shape-editor.h"
+#include "ui/tools/box3d-tool.h"
+
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+Box3dTool::Box3dTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/shapes/3dbox", "box.svg")
+    , _vpdrag(nullptr)
+    , box3d(nullptr)
+    , ctrl_dragged(false)
+    , extruded(false)
+{
+    this->shape_editor = new ShapeEditor(_desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection = desktop->getSelection()->connectChanged(
+    	sigc::mem_fun(this, &Box3dTool::selection_changed)
+    );
+
+    this->_vpdrag = new Box3D::VPDrag(desktop->getDocument());
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/shapes/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/shapes/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+Box3dTool::~Box3dTool() {
+    ungrabCanvasEvents();
+    this->finishItem();
+    this->sel_changed_connection.disconnect();
+
+    this->enableGrDrag(false);
+
+    delete (this->_vpdrag);
+    this->_vpdrag = nullptr;
+
+    delete this->shape_editor;
+    this->shape_editor = nullptr;
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ */
+void Box3dTool::selection_changed(Inkscape::Selection* selection) {
+    this->shape_editor->unset_item();
+    this->shape_editor->set_item(selection->singleItem());
+
+    if (selection->perspList().size() == 1) {
+        // selecting a single box changes the current perspective
+        _desktop->doc()->setCurrentPersp3D(selection->perspList().front());
+    }
+}
+
+/* Create a default perspective in document defs if none is present (which can happen, among other
+ * circumstances, after 'vacuum defs' or when a pre-0.46 file is opened).
+ */
+static void sp_box3d_context_ensure_persp_in_defs(SPDocument *document) {
+    SPDefs *defs = document->getDefs();
+
+    bool has_persp = false;
+    for (auto& child: defs->children) {
+        if (SP_IS_PERSP3D(&child)) {
+            has_persp = true;
+            break;
+        }
+    }
+
+    if (!has_persp) {
+        document->setCurrentPersp3D(Persp3D::create_xml_element (document));
+    }
+}
+
+bool Box3dTool::item_handler(SPItem* item, GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if ( event->button.button == 1) {
+            this->setup_for_drag_start(event);
+            //ret = TRUE;
+        }
+        break;
+        // motion and release are always on root (why?)
+    default:
+        break;
+    }
+
+//    if (((ToolBaseClass *) sp_box3d_context_parent_class)->item_handler) {
+//        ret = ((ToolBaseClass *) sp_box3d_context_parent_class)->item_handler(event_context, item, event);
+//    }
+    // CPPIFY: ret is always overwritten...
+    ret = ToolBase::item_handler(item, event);
+
+    return ret;
+}
+
+bool Box3dTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    SPDocument *document = _desktop->getDocument();
+    auto const y_dir = _desktop->yaxisdir();
+    Inkscape::Selection *selection = _desktop->getSelection();
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
+
+    Persp3D *cur_persp = document->getCurrentPersp3D();
+
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    gint ret = FALSE;
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if ( event->button.button == 1) {
+            Geom::Point const button_w(event->button.x, event->button.y);
+            Geom::Point button_dt(_desktop->w2d(button_w));
+
+            // save drag origin
+            this->xp = (gint) button_w[Geom::X];
+            this->yp = (gint) button_w[Geom::Y];
+            this->within_tolerance = true;
+
+            // remember clicked box3d, *not* disregarding groups (since a 3D box is a group), honoring Alt
+            this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, event->button.state & GDK_CONTROL_MASK);
+
+            dragging = true;
+
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop, true, this->box3d);
+            m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            m.unSetup();
+            this->center = button_dt;
+
+            this->drag_origin = button_dt;
+            this->drag_ptB = button_dt;
+            this->drag_ptC = button_dt;
+
+            // This can happen after saving when the last remaining perspective was purged and must be recreated.
+            if (!cur_persp) {
+                sp_box3d_context_ensure_persp_in_defs(document);
+                cur_persp = document->getCurrentPersp3D();
+            }
+
+            /* Projective preimages of clicked point under current perspective */
+            this->drag_origin_proj = cur_persp->perspective_impl->tmat.preimage (button_dt, 0, Proj::Z);
+            this->drag_ptB_proj = this->drag_origin_proj;
+            this->drag_ptC_proj = this->drag_origin_proj;
+            this->drag_ptC_proj.normalize();
+            this->drag_ptC_proj[Proj::Z] = 0.25;
+
+            grabCanvasEvents();
+            ret = TRUE;
+        }
+        break;
+
+    case GDK_MOTION_NOTIFY:
+        if (dragging && ( event->motion.state & GDK_BUTTON1_MASK )) {
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to draw, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            this->within_tolerance = false;
+
+            Geom::Point const motion_w(event->motion.x,
+                                       event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop, true, this->box3d);
+            m.freeSnapReturnByRef(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            this->ctrl_dragged  = event->motion.state & GDK_CONTROL_MASK;
+
+            if ((event->motion.state & GDK_SHIFT_MASK) && !this->extruded && this->box3d) {
+                // once shift is pressed, set this->extruded
+                this->extruded = true;
+            }
+
+            if (!this->extruded) {
+                this->drag_ptB = motion_dt;
+                this->drag_ptC = motion_dt;
+
+                this->drag_ptB_proj = cur_persp->perspective_impl->tmat.preimage (motion_dt, 0, Proj::Z);
+                this->drag_ptC_proj = this->drag_ptB_proj;
+                this->drag_ptC_proj.normalize();
+                this->drag_ptC_proj[Proj::Z] = 0.25;
+            } else {
+                // Without Ctrl, motion of the extruded corner is constrained to the
+                // perspective line from drag_ptB to vanishing point Y.
+                if (!this->ctrl_dragged) {
+                    /* snapping */
+                    Box3D::PerspectiveLine pline (this->drag_ptB, Proj::Z, document->getCurrentPersp3D());
+                    this->drag_ptC = pline.closest_to (motion_dt);
+
+                    this->drag_ptB_proj.normalize();
+                    this->drag_ptC_proj = cur_persp->perspective_impl->tmat.preimage (this->drag_ptC, this->drag_ptB_proj[Proj::X], Proj::X);
+                } else {
+                    this->drag_ptC = motion_dt;
+
+                    this->drag_ptB_proj.normalize();
+                    this->drag_ptC_proj = cur_persp->perspective_impl->tmat.preimage (motion_dt, this->drag_ptB_proj[Proj::X], Proj::X);
+                }
+
+                m.freeSnapReturnByRef(this->drag_ptC, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            }
+
+            m.unSetup();
+
+            this->drag(event->motion.state);
+
+            ret = TRUE;
+        } else if (!this->sp_event_context_knot_mouseover()) {
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop);
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+            m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
+            m.unSetup();
+        }
+        break;
+
+    case GDK_BUTTON_RELEASE:
+        this->xp = this->yp = 0;
+
+        if (event->button.button == 1) {
+            dragging = false;
+            this->discard_delayed_snap_event();
+
+            if (!this->within_tolerance) {
+                // we've been dragging (or switched tools if !box3d), finish the box
+                if (this->box3d) {
+                    _desktop->getSelection()->set(this->box3d); // Updating the selection will send signals to the box3d-toolbar ...
+                }
+                this->finishItem(); // .. but finishItem() will be called from the deconstructor too and shall NOT fire such signals!
+            } else if (this->item_to_select) {
+                // no dragging, select clicked box3d if any
+                if (event->button.state & GDK_SHIFT_MASK) {
+                    selection->toggle(this->item_to_select);
+                } else {
+                    selection->set(this->item_to_select);
+                }
+            } else {
+                // click in an empty space
+                selection->clear();
+            }
+
+            this->item_to_select = nullptr;
+            ret = TRUE;
+            ungrabCanvasEvents();
+        }
+        break;
+
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Up:
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Up:
+        case GDK_KEY_KP_Down:
+            // prevent the zoom field from activation
+            if (!MOD__CTRL_ONLY(event))
+                ret = TRUE;
+            break;
+
+        case GDK_KEY_bracketright:
+            document->getCurrentPersp3D()->rotate_VP (Proj::X, 180 / snaps * y_dir, MOD__ALT(event));
+            DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid"));
+            ret = true;
+            break;
+
+        case GDK_KEY_bracketleft:
+            document->getCurrentPersp3D()->rotate_VP (Proj::X, -180 / snaps * y_dir, MOD__ALT(event));
+            DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid"));
+            ret = true;
+            break;
+
+        case GDK_KEY_parenright:
+            document->getCurrentPersp3D()->rotate_VP (Proj::Y, 180 / snaps * y_dir, MOD__ALT(event));
+            DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid"));
+            ret = true;
+            break;
+
+        case GDK_KEY_parenleft:
+            document->getCurrentPersp3D()->rotate_VP (Proj::Y, -180 / snaps * y_dir, MOD__ALT(event));
+            DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid"));
+            ret = true;
+            break;
+
+        case GDK_KEY_braceright:
+            document->getCurrentPersp3D()->rotate_VP (Proj::Z, 180 / snaps * y_dir, MOD__ALT(event));
+            DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid"));
+            ret = true;
+            break;
+
+        case GDK_KEY_braceleft:
+            document->getCurrentPersp3D()->rotate_VP (Proj::Z, -180 / snaps * y_dir, MOD__ALT(event));
+            DocumentUndo::done(document, _("Change perspective (angle of PLs)"), INKSCAPE_ICON("draw-cuboid"));
+            ret = true;
+            break;
+
+        case GDK_KEY_g:
+        case GDK_KEY_G:
+            if (MOD__SHIFT_ONLY(event)) {
+                _desktop->selection->toGuides();
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_p:
+        case GDK_KEY_P:
+            if (MOD__SHIFT_ONLY(event)) {
+                if (document->getCurrentPersp3D()) {
+                    document->getCurrentPersp3D()->print_debugging_info();
+                }
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (MOD__ALT_ONLY(event)) {
+                _desktop->setToolboxFocusTo("box3d-angle-x");
+                ret = TRUE;
+            }
+            if (MOD__SHIFT_ONLY(event)) {
+                Persp3D::toggle_VPs(selection->perspList(), Proj::X);
+                this->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_y:
+        case GDK_KEY_Y:
+            if (MOD__SHIFT_ONLY(event)) {
+                Persp3D::toggle_VPs(selection->perspList(), Proj::Y);
+                this->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_z:
+        case GDK_KEY_Z:
+            if (MOD__SHIFT_ONLY(event)) {
+                Persp3D::toggle_VPs(selection->perspList(), Proj::Z);
+                this->_vpdrag->updateLines(); // FIXME: Shouldn't this be done automatically?
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+            _desktop->getSelection()->clear();
+            //TODO: make dragging escapable by Esc
+            break;
+
+        case GDK_KEY_space:
+            if (dragging) {
+                ungrabCanvasEvents();
+                dragging = false;
+                this->discard_delayed_snap_event();
+                if (!this->within_tolerance) {
+                    // we've been dragging (or switched tools if !box3d), finish the box
+                    if (this->box3d) {
+                        _desktop->getSelection()->set(this->box3d); // Updating the selection will send signals to the box3d-toolbar ...
+                    }
+                    this->finishItem(); // .. but finishItem() will be called from the deconstructor too and shall NOT fire such signals!
+                }
+                // do not return true, so that space would work switching to selector
+            }
+            break;
+
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+        case GDK_KEY_BackSpace:
+            ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void Box3dTool::drag(guint /*state*/) {
+    if (!this->box3d) {
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return;
+        }
+
+        // Create object
+        SPBox3D *box3d = SPBox3D::createBox3D(currentLayer());
+
+        // Set style
+        _desktop->applyCurrentOrToolStyle(box3d, "/tools/shapes/3dbox", false);
+
+        this->box3d = box3d;
+
+        // TODO: Incorporate this in box3d-side.cpp!
+        for (int i = 0; i < 6; ++i) {
+            Box3DSide *side = Box3DSide::createBox3DSide(box3d);
+            
+            guint desc = Box3D::int_to_face(i);
+
+            Box3D::Axis plane = (Box3D::Axis) (desc & 0x7);
+            plane = (Box3D::is_plane(plane) ? plane : Box3D::orth_plane_or_axis(plane));
+            side->dir1 = Box3D::extract_first_axis_direction(plane);
+            side->dir2 = Box3D::extract_second_axis_direction(plane);
+            side->front_or_rear = (Box3D::FrontOrRear) (desc & 0x8);
+
+            // Set style
+            Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+            Glib::ustring descr = "/desktop/";
+            descr += side->axes_string();
+            descr += "/style";
+
+            Glib::ustring cur_style = prefs->getString(descr);    
+    
+            bool use_current = prefs->getBool("/tools/shapes/3dbox/usecurrent", false);
+
+            if (use_current && !cur_style.empty()) {
+                // use last used style 
+                side->setAttribute("style", cur_style);
+            } else {
+                // use default style 
+                Glib::ustring tool_path = Glib::ustring::compose("/tools/shapes/3dbox/%1",
+                        side->axes_string());
+                _desktop->applyCurrentOrToolStyle(side, tool_path, false);
+            }
+
+            side->updateRepr(); // calls Box3DSide::write() and updates, e.g., the axes string description
+        }
+
+        this->box3d->set_z_orders();
+        this->box3d->updateRepr();
+
+        // TODO: It would be nice to show the VPs during dragging, but since there is no selection
+        //       at this point (only after finishing the box), we must do this "manually"
+        /* this._vpdrag->updateDraggers(); */
+    }
+
+    g_assert(this->box3d);
+
+    this->box3d->orig_corner0 = this->drag_origin_proj;
+    this->box3d->orig_corner7 = this->drag_ptC_proj;
+
+    this->box3d->check_for_swapped_coords();
+
+    /* we need to call this from here (instead of from SPBox3D::position_set(), for example)
+       because z-order setting must not interfere with display updates during undo/redo */
+    this->box3d->set_z_orders ();
+
+    this->box3d->position_set();
+
+    // status text
+    this->message_context->setF(Inkscape::NORMAL_MESSAGE, "%s", _("<b>3D Box</b>; with <b>Shift</b> to extrude along the Z axis"));
+}
+
+void Box3dTool::finishItem() {
+    this->message_context->clear();
+    this->ctrl_dragged = false;
+    this->extruded = false;
+
+    if (this->box3d != nullptr) {
+        SPDocument *doc = _desktop->getDocument();
+
+        if (!doc || !doc->getCurrentPersp3D()) {
+            return;
+        }
+
+        this->box3d->orig_corner0 = this->drag_origin_proj;
+        this->box3d->orig_corner7 = this->drag_ptC_proj;
+
+        this->box3d->updateRepr();
+
+        this->box3d->relabel_corners();
+
+        DocumentUndo::done(_desktop->getDocument(), _("Create 3D box"), INKSCAPE_ICON("draw-cuboid"));
+
+        this->box3d = nullptr;
+    }
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/box3d-tool.h b/src/ui/tools/box3d-tool.h
new file mode 100644
index 0000000..17bec3a
--- /dev/null
+++ b/src/ui/tools/box3d-tool.h
@@ -0,0 +1,103 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_BOX3D_CONTEXT_H__
+#define __SP_BOX3D_CONTEXT_H__
+
+/*
+ * 3D box drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ * Copyright (C) 2007 Maximilian Albert <Anhalter42@gmx.de>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+
+#include <2geom/point.h>
+#include <sigc++/connection.h>
+
+#include "proj_pt.h"
+#include "vanishing-point.h"
+
+#include "ui/tools/tool-base.h"
+
+class SPItem;
+class SPBox3D;
+
+namespace Box3D {
+    struct VPDrag;
+}
+
+namespace Inkscape {
+    class Selection;
+}
+
+#define SP_BOX3D_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::Box3dTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_BOX3D_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::Box3dTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class Box3dTool : public ToolBase {
+public:
+    Box3dTool(SPDesktop *desktop);
+    ~Box3dTool() override;
+
+    Box3D::VPDrag *_vpdrag;
+
+    bool root_handler(GdkEvent *event) override;
+    bool item_handler(SPItem *item, GdkEvent *event) override;
+
+private:
+    SPBox3D* box3d;
+    Geom::Point center;
+
+    /**
+     * save three corners while dragging:
+     * 1) the starting point (already done by the event_context)
+     * 2) drag_ptB --> the opposite corner of the front face (before pressing shift)
+     * 3) drag_ptC --> the "extruded corner" (which coincides with the mouse pointer location
+     *    if we are ctrl-dragging but is constrained to the perspective line from drag_ptC
+     *    to the vanishing point Y otherwise)
+     */
+    Geom::Point drag_origin;
+    Geom::Point drag_ptB;
+    Geom::Point drag_ptC;
+
+    Proj::Pt3 drag_origin_proj;
+    Proj::Pt3 drag_ptB_proj;
+    Proj::Pt3 drag_ptC_proj;
+
+    bool ctrl_dragged; /* whether we are ctrl-dragging */
+    bool extruded; /* whether shift-dragging already occurred (i.e. the box is already extruded) */
+
+    sigc::connection sel_changed_connection;
+
+	void selection_changed(Inkscape::Selection* selection);
+
+	void drag(guint state);
+	void finishItem();
+};
+
+}
+}
+}
+
+#endif /* __SP_BOX3D_CONTEXT_H__ */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/calligraphic-tool.cpp b/src/ui/tools/calligraphic-tool.cpp
new file mode 100644
index 0000000..aced95d
--- /dev/null
+++ b/src/ui/tools/calligraphic-tool.cpp
@@ -0,0 +1,1192 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Handwriting-like drawing mode
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   MenTaLguY <mental@rydia.net>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * The original dynadraw code:
+ *   Paul Haeberli <paul@sgi.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2005 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2005-2007 bulia byak
+ * Copyright (C) 2006 MenTaLguY
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#define noDYNA_DRAW_VERBOSE
+
+#include "ui/tools/calligraphic-tool.h"
+
+#include <cstring>
+#include <numeric>
+#include <string>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+#include <gtk/gtk.h>
+
+#include <2geom/bezier-utils.h>
+#include <2geom/circle.h>
+#include <2geom/pathvector.h>
+
+#include "context-fns.h"
+#include "desktop-events.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "inkscape.h"
+#include "message-context.h"
+#include "selection.h"
+
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-drawing.h" // ctx
+#include "display/curve.h"
+#include "display/drawing.h"
+
+#include "include/macros.h"
+
+#include "livarot/Path.h"
+#include "livarot/Shape.h"
+
+#include "object/sp-shape.h"
+#include "object/sp-text.h"
+
+#include "path/path-util.h"
+
+#include "svg/svg.h"
+
+#include "ui/icon-names.h"
+#include "ui/tools/freehand-base.h"
+
+#include "util/units.h"
+
+using Inkscape::DocumentUndo;
+using Inkscape::Util::Quantity;
+using Inkscape::Util::Unit;
+using Inkscape::Util::unit_table;
+
+#define DDC_RED_RGBA 0xff0000ff
+
+#define TOLERANCE_CALLIGRAPHIC 0.1
+
+#define DYNA_EPSILON 0.5e-6
+#define DYNA_EPSILON_START 0.5e-2
+#define DYNA_VEL_START 1e-5
+
+#define DYNA_MIN_WIDTH 1.0e-6
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+CalligraphicTool::CalligraphicTool(SPDesktop *desktop)
+    : DynamicBase(desktop, "/tools/calligraphic", "calligraphy.svg")
+    , keep_selected(true)
+    , hatch_spacing(0)
+    , hatch_spacing_step(0)
+    , hatch_item(nullptr)
+    , hatch_livarot_path(nullptr)
+    , hatch_last_nearest(Geom::Point(0, 0))
+    , hatch_last_pointer(Geom::Point(0, 0))
+    , hatch_escaped(false)
+    , just_started_drawing(false)
+    , trace_bg(false)
+{
+    this->vel_thin = 0.1;
+    this->flatness = -0.9;
+    this->cap_rounding = 0.0;
+    this->abs_width = false;
+
+    this->accumulated.reset(new SPCurve());
+    this->currentcurve.reset(new SPCurve());
+
+    this->cal1.reset(new SPCurve());
+    this->cal2.reset(new SPCurve());
+
+    currentshape = new Inkscape::CanvasItemBpath(desktop->getCanvasSketch());
+    currentshape->set_stroke(0x0);
+    currentshape->set_fill(DDC_RED_RGBA, SP_WIND_RULE_EVENODD);
+
+    /* fixme: Cannot we cascade it to root more clearly? */
+    currentshape->connect_event(sigc::bind(sigc::ptr_fun(sp_desktop_root_handler), desktop));
+
+    hatch_area = new Inkscape::CanvasItemBpath(desktop->getCanvasControls());
+    hatch_area->set_fill(0x0, SP_WIND_RULE_EVENODD);
+    hatch_area->set_stroke(0x0000007f);
+    hatch_area->set_pickable(false);
+    hatch_area->hide();
+
+    sp_event_context_read(this, "mass");
+    sp_event_context_read(this, "wiggle");
+    sp_event_context_read(this, "angle");
+    sp_event_context_read(this, "width");
+    sp_event_context_read(this, "thinning");
+    sp_event_context_read(this, "tremor");
+    sp_event_context_read(this, "flatness");
+    sp_event_context_read(this, "tracebackground");
+    sp_event_context_read(this, "usepressure");
+    sp_event_context_read(this, "usetilt");
+    sp_event_context_read(this, "abs_width");
+    sp_event_context_read(this, "keep_selected");
+    sp_event_context_read(this, "cap_rounding");
+
+    this->is_drawing = false;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/calligraphic/selcue")) {
+        this->enableSelectionCue();
+    }
+}
+
+CalligraphicTool::~CalligraphicTool()
+{
+    if (hatch_area) {
+        delete hatch_area;
+        hatch_area = nullptr;
+    }
+    if (currentshape) {
+        delete currentshape;
+        currentshape = nullptr;
+    }
+}
+
+void CalligraphicTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "tracebackground") {
+        this->trace_bg = val.getBool();
+    } else if (path == "keep_selected") {
+        this->keep_selected = val.getBool();
+    } else {
+        //pass on up to parent class to handle common attributes.
+    	DynamicBase::set(val);
+    }
+
+    //g_print("DDC: %g %g %g %g\n", ddc->mass, ddc->drag, ddc->angle, ddc->width);
+}
+
+static double
+flerp(double f0, double f1, double p)
+{
+    return f0 + ( f1 - f0 ) * p;
+}
+
+void CalligraphicTool::reset(Geom::Point p) {
+    this->last = this->cur = this->getNormalizedPoint(p);
+
+    this->vel = Geom::Point(0,0);
+    this->vel_max = 0;
+    this->acc = Geom::Point(0,0);
+    this->ang = Geom::Point(0,0);
+    this->del = Geom::Point(0,0);
+}
+
+void CalligraphicTool::extinput(GdkEvent *event) {
+    if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &this->pressure)) {
+        this->pressure = CLAMP (this->pressure, DDC_MIN_PRESSURE, DDC_MAX_PRESSURE);
+    } else {
+        this->pressure = DDC_DEFAULT_PRESSURE;
+    }
+
+    if (gdk_event_get_axis (event, GDK_AXIS_XTILT, &this->xtilt)) {
+        this->xtilt = CLAMP (this->xtilt, DDC_MIN_TILT, DDC_MAX_TILT);
+    } else {
+        this->xtilt = DDC_DEFAULT_TILT;
+    }
+
+    if (gdk_event_get_axis (event, GDK_AXIS_YTILT, &this->ytilt)) {
+        this->ytilt = CLAMP (this->ytilt, DDC_MIN_TILT, DDC_MAX_TILT);
+    } else {
+        this->ytilt = DDC_DEFAULT_TILT;
+    }
+}
+
+
+bool CalligraphicTool::apply(Geom::Point p) {
+    Geom::Point n = this->getNormalizedPoint(p);
+
+    /* Calculate mass and drag */
+    double const mass = flerp(1.0, 160.0, this->mass);
+    double const drag = flerp(0.0, 0.5, this->drag * this->drag);
+
+    /* Calculate force and acceleration */
+    Geom::Point force = n - this->cur;
+
+    // If force is below the absolute threshold DYNA_EPSILON,
+    // or we haven't yet reached DYNA_VEL_START (i.e. at the beginning of stroke)
+    // _and_ the force is below the (higher) DYNA_EPSILON_START threshold,
+    // discard this move.
+    // This prevents flips, blobs, and jerks caused by microscopic tremor of the tablet pen,
+    // especially bothersome at the start of the stroke where we don't yet have the inertia to
+    // smooth them out.
+    if ( Geom::L2(force) < DYNA_EPSILON || (this->vel_max < DYNA_VEL_START && Geom::L2(force) < DYNA_EPSILON_START)) {
+        return FALSE;
+    }
+
+    this->acc = force / mass;
+
+    /* Calculate new velocity */
+    this->vel += this->acc;
+
+    if (Geom::L2(this->vel) > this->vel_max)
+        this->vel_max = Geom::L2(this->vel);
+
+    /* Calculate angle of drawing tool */
+
+    double a1;
+    if (this->usetilt) {
+        // 1a. calculate nib angle from input device tilt:
+        if (this->xtilt == 0 && this->ytilt == 0) {
+            // to be sure that atan2 in the computation below
+            // would not crash or return NaN.
+            a1 = 0;
+        } else {
+            Geom::Point dir(-this->xtilt, this->ytilt);
+            a1 = atan2(dir);
+        }
+    }
+    else {
+        // 1b. fixed dc->angle (absolutely flat nib):
+        a1 = ( this->angle / 180.0 ) * M_PI;
+    }
+    a1 *= -_desktop->yaxisdir();
+    if (this->flatness < 0.0) {
+        // flips direction. Useful when this->usetilt
+        // allows simulating both pen and calligraphic brush
+        a1 *= -1;
+    }
+    a1 = fmod(a1, M_PI);
+    if (a1 > 0.5*M_PI) {
+        a1 -= M_PI;
+    } else if (a1 <= -0.5*M_PI) {
+        a1 += M_PI;
+    }
+
+    // 2. perpendicular to dc->vel (absolutely non-flat nib):
+    gdouble const mag_vel = Geom::L2(this->vel);
+    if ( mag_vel < DYNA_EPSILON ) {
+        return FALSE;
+    }
+    Geom::Point ang2 = Geom::rot90(this->vel) / mag_vel;
+
+    // 3. Average them using flatness parameter:
+    // calculate angles
+    double a2 = atan2(ang2);
+    // flip a2 to force it to be in the same half-circle as a1
+    bool flipped = false;
+    if (fabs (a2-a1) > 0.5*M_PI) {
+        a2 += M_PI;
+        flipped = true;
+    }
+    // normalize a2
+    if (a2 > M_PI)
+        a2 -= 2*M_PI;
+    if (a2 < -M_PI)
+        a2 += 2*M_PI;
+    // find the flatness-weighted bisector angle, unflip if a2 was flipped
+    // FIXME: when dc->vel is oscillating around the fixed angle, the new_ang flips back and forth. How to avoid this?
+    double new_ang = a1 + (1 - fabs(this->flatness)) * (a2 - a1) - (flipped? M_PI : 0);
+
+    // Try to detect a sudden flip when the new angle differs too much from the previous for the
+    // current velocity; in that case discard this move
+    double angle_delta = Geom::L2(Geom::Point (cos (new_ang), sin (new_ang)) - this->ang);
+    if ( angle_delta / Geom::L2(this->vel) > 4000 ) {
+        return FALSE;
+    }
+
+    // convert to point
+    this->ang = Geom::Point (cos (new_ang), sin (new_ang));
+
+//    g_print ("force %g  acc %g  vel_max %g  vel %g  a1 %g  a2 %g  new_ang %g\n", Geom::L2(force), Geom::L2(dc->acc), dc->vel_max, Geom::L2(dc->vel), a1, a2, new_ang);
+
+    /* Apply drag */
+    this->vel *= 1.0 - drag;
+
+    /* Update position */
+    this->last = this->cur;
+    this->cur += this->vel;
+
+    return TRUE;
+}
+
+void CalligraphicTool::brush() {
+    g_assert( this->npoints >= 0 && this->npoints < SAMPLING_SIZE );
+
+    // How much velocity thins strokestyle
+    double vel_thin = flerp (0, 160, this->vel_thin);
+
+    // Influence of pressure on thickness
+    double pressure_thick = (this->usepressure ? this->pressure : 1.0);
+
+    // get the real brush point, not the same as pointer (affected by hatch tracking and/or mass
+    // drag)
+    Geom::Point brush = getViewPoint(this->cur);
+    Geom::Point brush_w = _desktop->d2w(brush);
+
+    double trace_thick = 1;
+    if (this->trace_bg) {
+        // Trace background, use single pixel under brush.
+        Geom::IntRect area = Geom::IntRect::from_xywh(brush_w.floor(), Geom::IntPoint(1, 1));
+
+        Inkscape::CanvasItemDrawing *canvas_item_drawing = _desktop->getCanvasDrawing();
+        Inkscape::Drawing *drawing = canvas_item_drawing->get_drawing();
+
+        // Ensure drawing up-to-date. (Is this really necessary?)
+        drawing->update();
+
+        // Get average color.
+        double R, G, B, A;
+        drawing->average_color(area, R, G, B, A);
+
+        // Convert to thickness.
+        double max = MAX (MAX (R, G), B);
+        double min = MIN (MIN (R, G), B);
+        double L = A * (max + min)/2 + (1 - A); // blend with white bg
+        trace_thick = 1 - L;
+        //g_print ("L %g thick %g\n", L, trace_thick);
+    }
+
+    double width = (pressure_thick * trace_thick - vel_thin * Geom::L2(this->vel)) * this->width;
+
+    double tremble_left = 0, tremble_right = 0;
+    if (this->tremor > 0) {
+        // obtain two normally distributed random variables, using polar Box-Muller transform
+        double x1, x2, w, y1, y2;
+        do {
+            x1 = 2.0 * g_random_double_range(0,1) - 1.0;
+            x2 = 2.0 * g_random_double_range(0,1) - 1.0;
+            w = x1 * x1 + x2 * x2;
+        } while ( w >= 1.0 );
+        w = sqrt( (-2.0 * log( w ) ) / w );
+        y1 = x1 * w;
+        y2 = x2 * w;
+
+        // deflect both left and right edges randomly and independently, so that:
+        // (1) dc->tremor=1 corresponds to sigma=1, decreasing dc->tremor narrows the bell curve;
+        // (2) deflection depends on width, but is upped for small widths for better visual uniformity across widths;
+        // (3) deflection somewhat depends on speed, to prevent fast strokes looking
+        // comparatively smooth and slow ones excessively jittery
+        tremble_left  = (y1)*this->tremor * (0.15 + 0.8*width) * (0.35 + 14*Geom::L2(this->vel));
+        tremble_right = (y2)*this->tremor * (0.15 + 0.8*width) * (0.35 + 14*Geom::L2(this->vel));
+    }
+
+    if ( width < 0.02 * this->width ) {
+        width = 0.02 * this->width;
+    }
+
+    double dezoomify_factor = 0.05 * 1000;
+    if (!this->abs_width) {
+        dezoomify_factor /= _desktop->current_zoom();
+    }
+
+    Geom::Point del_left = dezoomify_factor * (width + tremble_left) * this->ang;
+    Geom::Point del_right = dezoomify_factor * (width + tremble_right) * this->ang;
+
+    this->point1[this->npoints] = brush + del_left;
+    this->point2[this->npoints] = brush - del_right;
+
+    this->del = 0.5*(del_left + del_right);
+
+    this->npoints++;
+}
+
+static void
+sp_ddc_update_toolbox (SPDesktop *desktop, const gchar *id, double value)
+{
+    desktop->setToolboxAdjustmentValue (id, value);
+}
+
+void CalligraphicTool::cancel() {
+    this->dragging = false;
+    this->is_drawing = false;
+
+    ungrabCanvasEvents();
+
+    /* Remove all temporary line segments */
+    for (auto segment :this->segments) {
+        delete segment;
+    }
+    this->segments.clear();
+
+    /* reset accumulated curve */
+    this->accumulated->reset();
+    this->clear_current();
+
+    if (this->repr) {
+        this->repr = nullptr;
+    }
+}
+
+bool CalligraphicTool::root_handler(GdkEvent* event) {
+    gint ret = FALSE;
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Unit const *unit = unit_table.getUnit(prefs->getString("/tools/calligraphic/unit"));
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+                    return TRUE;
+                }
+
+                this->accumulated->reset();
+
+                if (this->repr) {
+                    this->repr = nullptr;
+                }
+
+                /* initialize first point */
+                this->npoints = 0;
+
+                grabCanvasEvents();
+
+                ret = TRUE;
+
+                set_high_motion_precision();
+                this->is_drawing = true;
+                this->just_started_drawing = true;
+            }
+            break;
+        case GDK_MOTION_NOTIFY:
+        {
+            Geom::Point const motion_w(event->motion.x,
+                                     event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+            this->extinput(event);
+
+            this->message_context->clear();
+
+            // for hatching:
+            double hatch_dist = 0;
+            Geom::Point hatch_unit_vector(0,0);
+            Geom::Point nearest(0,0);
+            Geom::Point pointer(0,0);
+            Geom::Affine motion_to_curve(Geom::identity());
+
+            if (event->motion.state & GDK_CONTROL_MASK) { // hatching - sense the item
+
+                SPItem *selected = _desktop->getSelection()->singleItem();
+                if (selected && (SP_IS_SHAPE(selected) || SP_IS_TEXT(selected))) {
+                    // One item selected, and it's a path;
+                    // let's try to track it as a guide
+
+                    if (selected != this->hatch_item) {
+                        this->hatch_item = selected;
+                        if (this->hatch_livarot_path)
+                            delete this->hatch_livarot_path;
+                        this->hatch_livarot_path = Path_for_item (this->hatch_item, true, true);
+                        if (hatch_livarot_path) {
+                            hatch_livarot_path->ConvertWithBackData(0.01);
+                        }
+                    }
+
+                    // calculate pointer point in the guide item's coords
+                    motion_to_curve = selected->dt2i_affine() * selected->i2doc_affine();
+                    pointer = motion_dt * motion_to_curve;
+
+                    // calculate the nearest point on the guide path
+                    std::optional<Path::cut_position> position = get_nearest_position_on_Path(this->hatch_livarot_path, pointer);
+                    if (position) {
+                        nearest = get_point_on_Path(hatch_livarot_path, position->piece, position->t);
+
+                        // distance from pointer to nearest
+                        hatch_dist = Geom::L2(pointer - nearest);
+                        // unit-length vector
+                        hatch_unit_vector = (pointer - nearest) / hatch_dist;
+
+                        this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Guide path selected</b>; start drawing along the guide with <b>Ctrl</b>"));
+                    }
+                } else {
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Select a guide path</b> to track with <b>Ctrl</b>"));
+                }
+            }
+
+            if ( this->is_drawing && (event->motion.state & GDK_BUTTON1_MASK)) {
+                this->dragging = TRUE;
+
+                if (event->motion.state & GDK_CONTROL_MASK && this->hatch_item) { // hatching
+
+#define HATCH_VECTOR_ELEMENTS 12
+#define INERTIA_ELEMENTS 24
+#define SPEED_ELEMENTS 12
+#define SPEED_MIN 0.3
+#define SPEED_NORMAL 0.35
+#define INERTIA_FORCE 0.5
+
+                    // speed is the movement of the nearest point along the guide path, divided by
+                    // the movement of the pointer at the same period; it is averaged for the last
+                    // SPEED_ELEMENTS motion events.  Normally, as you track the guide path, speed
+                    // is about 1, i.e. the nearest point on the path is moved by about the same
+                    // distance as the pointer. If the speed starts to decrease, we are losing
+                    // contact with the guide; if it drops below SPEED_MIN, we are on our own and
+                    // not attracted to guide anymore. Most often this happens when you have
+                    // tracked to the end of a guide calligraphic stroke and keep moving
+                    // further. We try to handle this situation gracefully: not stick with the
+                    // guide forever but let go of it smoothly and without sharp jerks (non-zero
+                    // mass recommended; with zero mass, jerks are still quite noticeable).
+
+                    double speed = 1;
+                    if (Geom::L2(this->hatch_last_nearest) != 0) {
+                        // the distance nearest moved since the last motion event
+                        double nearest_moved = Geom::L2(nearest - this->hatch_last_nearest);
+                        // the distance pointer moved since the last motion event
+                        double pointer_moved = Geom::L2(pointer - this->hatch_last_pointer);
+                        // store them in stacks limited to SPEED_ELEMENTS
+                        this->hatch_nearest_past.push_front(nearest_moved);
+                        if (this->hatch_nearest_past.size() > SPEED_ELEMENTS)
+                            this->hatch_nearest_past.pop_back();
+                        this->hatch_pointer_past.push_front(pointer_moved);
+                        if (this->hatch_pointer_past.size() > SPEED_ELEMENTS)
+                            this->hatch_pointer_past.pop_back();
+
+                        // If the stacks are full,
+                        if (this->hatch_nearest_past.size() == SPEED_ELEMENTS) {
+                            // calculate the sums of all stored movements
+                            double nearest_sum = std::accumulate (this->hatch_nearest_past.begin(), this->hatch_nearest_past.end(), 0.0);
+                            double pointer_sum = std::accumulate (this->hatch_pointer_past.begin(), this->hatch_pointer_past.end(), 0.0);
+                            // and divide to get the speed
+                            speed = nearest_sum/pointer_sum;
+                            //g_print ("nearest sum %g  pointer_sum %g  speed %g\n", nearest_sum, pointer_sum, speed);
+                        }
+                    }
+
+                    if (   this->hatch_escaped  // already escaped, do not reattach
+                        || (speed < SPEED_MIN) // stuck; most likely reached end of traced stroke
+                        || (this->hatch_spacing > 0 && hatch_dist > 50 * this->hatch_spacing) // went too far from the guide
+                        ) {
+                        // We are NOT attracted to the guide!
+
+                        //g_print ("\nlast_nearest %g %g   nearest %g %g  pointer %g %g  pos %d %g\n", dc->last_nearest[Geom::X], dc->last_nearest[Geom::Y], nearest[Geom::X], nearest[Geom::Y], pointer[Geom::X], pointer[Geom::Y], position->piece, position->t);
+
+                        // Remember hatch_escaped so we don't get
+                        // attracted again until the end of this stroke
+                        this->hatch_escaped = true;
+
+                        if (this->inertia_vectors.size() >= INERTIA_ELEMENTS/2) { // move by inertia
+                            Geom::Point moved_past_escape = motion_dt - this->inertia_vectors.front();
+                            Geom::Point inertia = 
+                                this->inertia_vectors.front() - this->inertia_vectors.back();
+
+                            double dot = Geom::dot (moved_past_escape, inertia);
+                            dot /= Geom::L2(moved_past_escape) * Geom::L2(inertia);
+
+                            if (dot > 0) { // mouse is still moving in approx the same direction
+                                Geom::Point should_have_moved = 
+                                    (inertia) * (1/Geom::L2(inertia)) * Geom::L2(moved_past_escape);
+                                motion_dt = this->inertia_vectors.front() + 
+                                    (INERTIA_FORCE * should_have_moved + (1 - INERTIA_FORCE) * moved_past_escape);
+                            }
+                        }
+
+                    } else {
+
+                        // Calculate angle cosine of this vector-to-guide and all past vectors
+                        // summed, to detect if we accidentally flipped to the other side of the
+                        // guide
+                        Geom::Point hatch_vector_accumulated = std::accumulate 
+                            (this->hatch_vectors.begin(), this->hatch_vectors.end(), Geom::Point(0,0));
+                        double dot = Geom::dot (pointer - nearest, hatch_vector_accumulated);
+                        dot /= Geom::L2(pointer - nearest) * Geom::L2(hatch_vector_accumulated);
+
+                        if (this->hatch_spacing != 0) { // spacing was already set
+                            double target;
+                            if (speed > SPEED_NORMAL) {
+                                // all ok, strictly obey the spacing
+                                target = this->hatch_spacing;
+                            } else {
+                                // looks like we're starting to lose speed,
+                                // so _gradually_ let go attraction to prevent jerks
+                                target = (this->hatch_spacing * speed + hatch_dist * (SPEED_NORMAL - speed))/SPEED_NORMAL;
+                            }
+                            if (!std::isnan(dot) && dot < -0.5) {// flip
+                                target = -target;
+                            }
+
+                            // This is the track pointer that we will use instead of the real one
+                            Geom::Point new_pointer = nearest + target * hatch_unit_vector;
+
+                            // some limited feedback: allow persistent pulling to slightly change
+                            // the spacing
+                            this->hatch_spacing += (hatch_dist - this->hatch_spacing)/3500;
+
+                            // return it to the desktop coords
+                            motion_dt = new_pointer * motion_to_curve.inverse();
+
+                            if (speed >= SPEED_NORMAL) {
+                                this->inertia_vectors.push_front(motion_dt);
+                                if (this->inertia_vectors.size() > INERTIA_ELEMENTS)
+                                    this->inertia_vectors.pop_back();
+                            }
+
+                        } else {
+                            // this is the first motion event, set the dist
+                            this->hatch_spacing = hatch_dist;
+                        }
+
+                        // remember last points
+                        this->hatch_last_pointer = pointer;
+                        this->hatch_last_nearest = nearest;
+
+                        this->hatch_vectors.push_front(pointer - nearest);
+                        if (this->hatch_vectors.size() > HATCH_VECTOR_ELEMENTS)
+                            this->hatch_vectors.pop_back();
+                    }
+
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, this->hatch_escaped? _("Tracking: <b>connection to guide path lost!</b>") : _("<b>Tracking</b> a guide path"));
+
+                } else {
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drawing</b> a calligraphic stroke"));
+                }
+
+                if (this->just_started_drawing) {
+                    this->just_started_drawing = false;
+                    this->reset(motion_dt);
+                }
+
+                if (!this->apply(motion_dt)) {
+                    ret = TRUE;
+                    break;
+                }
+
+                if ( this->cur != this->last ) {
+                    this->brush();
+                    g_assert( this->npoints > 0 );
+                    this->fit_and_split(false);
+                }
+                ret = TRUE;
+            }
+
+            Geom::PathVector path = Geom::Path(Geom::Circle(0,0,1)); // Unit circle centered at origin.
+
+            // Draw the hatching circle if necessary
+            if (event->motion.state & GDK_CONTROL_MASK) {
+                if (this->hatch_spacing == 0 && hatch_dist != 0) {
+                    // Haven't set spacing yet: gray, center free, update radius live
+
+                    Geom::Point c = _desktop->w2d(motion_w);
+                    Geom::Affine const sm (Geom::Scale(hatch_dist, hatch_dist) * Geom::Translate(c));
+                    path *= sm;
+
+                    hatch_area->set_bpath(path, true);
+                    hatch_area->set_stroke(0x7f7f7fff);
+                    hatch_area->show();
+
+                } else if (this->dragging && !this->hatch_escaped && hatch_dist != 0) {
+                    // Tracking: green, center snapped, fixed radius
+
+                    Geom::Point c = motion_dt;
+                    Geom::Affine const sm (Geom::Scale(this->hatch_spacing, this->hatch_spacing) * Geom::Translate(c));
+                    path *= sm;
+
+                    hatch_area->set_bpath(path, true);
+                    hatch_area->set_stroke(0x00FF00ff);
+                    hatch_area->show();
+
+                } else if (this->dragging && this->hatch_escaped && hatch_dist != 0) {
+                    // Tracking escaped: red, center free, fixed radius
+
+                    Geom::Point c = motion_dt;
+                    Geom::Affine const sm (Geom::Scale(this->hatch_spacing, this->hatch_spacing) * Geom::Translate(c));
+                    path *= sm;
+
+                    hatch_area->set_bpath(path, true);
+                    hatch_area->set_stroke(0xff0000ff);
+                    hatch_area->show();
+
+                } else {
+                    // Not drawing but spacing set: gray, center snapped, fixed radius
+
+                    Geom::Point c = (nearest + this->hatch_spacing * hatch_unit_vector) * motion_to_curve.inverse();
+                    if (!std::isnan(c[Geom::X]) && !std::isnan(c[Geom::Y]) && this->hatch_spacing!=0) {
+                        Geom::Affine const sm (Geom::Scale(this->hatch_spacing, this->hatch_spacing) * Geom::Translate(c));
+                        path *= sm;
+
+                        hatch_area->set_bpath(path, true);
+                        hatch_area->set_stroke(0x7f7f7fff);
+                        hatch_area->show();
+                    }
+                }
+            } else {
+                hatch_area->hide();
+            }
+        }
+        break;
+
+
+    case GDK_BUTTON_RELEASE:
+    {
+        Geom::Point const motion_w(event->button.x, event->button.y);
+        Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+        ungrabCanvasEvents();
+
+        set_high_motion_precision(false);
+        this->is_drawing = false;
+
+        if (this->dragging && event->button.button == 1) {
+            this->dragging = FALSE;
+
+            this->apply(motion_dt);
+
+            /* Remove all temporary line segments */
+            for (auto segment : this->segments) {
+                delete segment;
+            }
+            this->segments.clear();
+
+            /* Create object */
+            this->fit_and_split(true);
+            if (this->accumulate())
+                this->set_to_accumulated(event->button.state & GDK_SHIFT_MASK, event->button.state & GDK_MOD1_MASK); // performs document_done
+            else
+                g_warning ("Failed to create path: invalid data in dc->cal1 or dc->cal2");
+
+            /* reset accumulated curve */
+            this->accumulated->reset();
+
+            this->clear_current();
+            if (this->repr) {
+                this->repr = nullptr;
+            }
+
+            if (!this->hatch_pointer_past.empty()) this->hatch_pointer_past.clear();
+            if (!this->hatch_nearest_past.empty()) this->hatch_nearest_past.clear();
+            if (!this->inertia_vectors.empty()) this->inertia_vectors.clear();
+            if (!this->hatch_vectors.empty()) this->hatch_vectors.clear();
+            this->hatch_last_nearest = Geom::Point(0,0);
+            this->hatch_last_pointer = Geom::Point(0,0);
+            this->hatch_escaped = false;
+            this->hatch_item = nullptr;
+            this->hatch_livarot_path = nullptr;
+            this->just_started_drawing = false;
+
+            if (this->hatch_spacing != 0 && !this->keep_selected) {
+                // we do not select the newly drawn path, so increase spacing by step
+                if (this->hatch_spacing_step == 0) {
+                    this->hatch_spacing_step = this->hatch_spacing;
+                }
+                this->hatch_spacing += this->hatch_spacing_step;
+            }
+
+            this->message_context->clear();
+            ret = TRUE;
+        } else if (!this->dragging
+                   && event->button.button == 1
+                   && Inkscape::have_viable_layer(_desktop, defaultMessageContext()))
+        {
+            spdc_create_single_dot(this, _desktop->w2d(motion_w), "/tools/calligraphic", event->button.state);
+            ret = TRUE;
+        }
+        break;
+    }
+
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Up:
+        case GDK_KEY_KP_Up:
+            if (!MOD__CTRL_ONLY(event)) {
+                this->angle += 5.0;
+                if (this->angle > 90.0)
+                    this->angle = 90.0;
+                sp_ddc_update_toolbox(_desktop, "calligraphy-angle", this->angle);
+                ret = TRUE;
+            }
+            break;
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Down:
+            if (!MOD__CTRL_ONLY(event)) {
+                this->angle -= 5.0;
+                if (this->angle < -90.0)
+                    this->angle = -90.0;
+                sp_ddc_update_toolbox(_desktop, "calligraphy-angle", this->angle);
+                ret = TRUE;
+            }
+            break;
+        case GDK_KEY_Right:
+        case GDK_KEY_KP_Right:
+            if (!MOD__CTRL_ONLY(event)) {
+                this->width = Quantity::convert(this->width, "px", unit) + 0.01;
+                if (this->width > 1.0)
+                    this->width = 1.0;
+                sp_ddc_update_toolbox (_desktop, "calligraphy-width", this->width * 100); // the same spinbutton is for alt+x
+                ret = TRUE;
+            }
+            break;
+        case GDK_KEY_Left:
+        case GDK_KEY_KP_Left:
+            if (!MOD__CTRL_ONLY(event)) {
+                this->width = Quantity::convert(this->width, "px", unit) - 0.01;
+                if (this->width < 0.00001)
+                    this->width = 0.00001;
+                sp_ddc_update_toolbox(_desktop, "calligraphy-width", this->width * 100);
+                ret = TRUE;
+            }
+            break;
+        case GDK_KEY_Home:
+        case GDK_KEY_KP_Home:
+            this->width = 0.00001;
+            sp_ddc_update_toolbox(_desktop, "calligraphy-width", this->width * 100);
+            ret = TRUE;
+            break;
+        case GDK_KEY_End:
+        case GDK_KEY_KP_End:
+            this->width = 1.0;
+            sp_ddc_update_toolbox(_desktop, "calligraphy-width", this->width * 100);
+            ret = TRUE;
+            break;
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (MOD__ALT_ONLY(event)) {
+                _desktop->setToolboxFocusTo("calligraphy-width");
+                ret = TRUE;
+            }
+            break;
+        case GDK_KEY_Escape:
+            if (this->is_drawing) {
+                // if drawing, cancel, otherwise pass it up for deselecting
+                this->cancel();
+                ret = TRUE;
+            }
+            break;
+        case GDK_KEY_z:
+        case GDK_KEY_Z:
+            if (MOD__CTRL_ONLY(event) && this->is_drawing) {
+                // if drawing, cancel, otherwise pass it up for undo
+                this->cancel();
+                ret = TRUE;
+            }
+            break;
+        default:
+            break;
+        }
+        break;
+
+    case GDK_KEY_RELEASE:
+        switch (get_latin_keyval(&event->key)) {
+            case GDK_KEY_Control_L:
+            case GDK_KEY_Control_R:
+                this->message_context->clear();
+                this->hatch_spacing = 0;
+                this->hatch_spacing_step = 0;
+                break;
+            default:
+                break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+//        if ((SP_EVENT_CONTEXT_CLASS(sp_dyna_draw_context_parent_class))->root_handler) {
+//            ret = (SP_EVENT_CONTEXT_CLASS(sp_dyna_draw_context_parent_class))->root_handler(event_context, event);
+//        }
+    	ret = DynamicBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+
+void CalligraphicTool::clear_current() {
+    /* reset bpath */
+    this->currentshape->set_bpath(nullptr);
+
+    /* reset curve */
+    this->currentcurve->reset();
+    this->cal1->reset();
+    this->cal2->reset();
+
+    /* reset points */
+    this->npoints = 0;
+}
+
+void CalligraphicTool::set_to_accumulated(bool unionize, bool subtract) {
+    if (!this->accumulated->is_empty()) {
+        if (!this->repr) {
+            /* Create object */
+            Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+            Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+
+            /* Set style */
+            sp_desktop_apply_style_tool(_desktop, repr, "/tools/calligraphic", false);
+
+            this->repr = repr;
+
+            auto layer = currentLayer();
+            SPItem *item=SP_ITEM(layer->appendChildRepr(this->repr));
+            Inkscape::GC::release(this->repr);
+            item->transform = layer->i2doc_affine().inverse();
+            item->updateRepr();
+        }
+
+        Geom::PathVector pathv = this->accumulated->get_pathvector() * _desktop->dt2doc();
+        this->repr->setAttribute("d", sp_svg_write_path(pathv));
+
+        if (unionize) {
+            _desktop->getSelection()->add(this->repr);
+            _desktop->getSelection()->pathUnion(true);
+        } else if (subtract) {
+            _desktop->getSelection()->add(this->repr);
+            _desktop->getSelection()->pathDiff(true);
+        } else {
+            if (this->keep_selected) {
+                _desktop->getSelection()->set(this->repr);
+            }
+        }
+
+        // Now we need to write the transform information.
+        // First, find out whether our repr is still linked to a valid object. In this case,
+        // we need to write the transform data only for this element.
+        // Either there was no boolean op or it failed.
+        SPItem *result = SP_ITEM(_desktop->doc()->getObjectByRepr(this->repr));
+
+        if (result == nullptr) {
+            // The boolean operation succeeded.
+            // Now we fetch the single item, that has been set as selected by the boolean op.
+            // This is its result.
+            result = _desktop->getSelection()->singleItem();
+        }
+        result->doWriteTransform(result->transform, nullptr, true);
+    } else {
+        if (this->repr) {
+            sp_repr_unparent(this->repr);
+        }
+
+        this->repr = nullptr;
+    }
+
+    DocumentUndo::done(_desktop->getDocument(), _("Draw calligraphic stroke"), INKSCAPE_ICON("draw-calligraphic"));
+}
+
+static void
+add_cap(SPCurve &curve,
+        Geom::Point const &from,
+        Geom::Point const &to,
+        double rounding)
+{
+    if (Geom::L2( to - from ) > DYNA_EPSILON) {
+        Geom::Point vel = rounding * Geom::rot90( to - from ) / sqrt(2.0);
+        double mag = Geom::L2(vel);
+
+        Geom::Point v = mag * Geom::rot90( to - from ) / Geom::L2( to - from );
+        curve.curveto(from + v, to + v, to);
+    }
+}
+
+bool CalligraphicTool::accumulate() {
+	if (
+		this->cal1->is_empty() ||
+		this->cal2->is_empty() ||
+		(this->cal1->get_segment_count() <= 0) ||
+		this->cal1->first_path()->closed()
+		) {
+
+		this->cal1->reset();
+		this->cal2->reset();
+
+		return false; // failure
+	}
+
+        auto rev_cal2 = this->cal2->create_reverse();
+
+	if ((rev_cal2->get_segment_count() <= 0) || rev_cal2->first_path()->closed()) {
+		this->cal1->reset();
+		this->cal2->reset();
+
+		return false; // failure
+	}
+
+	Geom::Curve const * dc_cal1_firstseg  = this->cal1->first_segment();
+	Geom::Curve const * rev_cal2_firstseg = rev_cal2->first_segment();
+	Geom::Curve const * dc_cal1_lastseg   = this->cal1->last_segment();
+	Geom::Curve const * rev_cal2_lastseg  = rev_cal2->last_segment();
+
+	this->accumulated->reset(); /*  Is this required ?? */
+
+	this->accumulated->append(*cal1);
+
+	add_cap(*accumulated, dc_cal1_lastseg->finalPoint(), rev_cal2_firstseg->initialPoint(), cap_rounding);
+
+	this->accumulated->append(*rev_cal2, true);
+
+	add_cap(*accumulated, rev_cal2_lastseg->finalPoint(), dc_cal1_firstseg->initialPoint(), cap_rounding);
+
+	this->accumulated->closepath();
+
+	this->cal1->reset();
+	this->cal2->reset();
+
+	return true; // success
+}
+
+static double square(double const x)
+{
+    return x * x;
+}
+
+void CalligraphicTool::fit_and_split(bool release) {
+    double const tolerance_sq = square(_desktop->w2d().descrim() * TOLERANCE_CALLIGRAPHIC);
+
+#ifdef DYNA_DRAW_VERBOSE
+    g_print("[F&S:R=%c]", release?'T':'F');
+#endif
+
+    if (!( this->npoints > 0 && this->npoints < SAMPLING_SIZE )) {
+        return; // just clicked
+    }
+
+    if ( this->npoints == SAMPLING_SIZE - 1 || release ) {
+#define BEZIER_SIZE       4
+#define BEZIER_MAX_BEZIERS  8
+#define BEZIER_MAX_LENGTH ( BEZIER_SIZE * BEZIER_MAX_BEZIERS )
+
+#ifdef DYNA_DRAW_VERBOSE
+        g_print("[F&S:#] dc->npoints:%d, release:%s\n",
+                this->npoints, release ? "TRUE" : "FALSE");
+#endif
+
+        /* Current calligraphic */
+        if ( this->cal1->is_empty() || this->cal2->is_empty() ) {
+            /* dc->npoints > 0 */
+            /* g_print("calligraphics(1|2) reset\n"); */
+            this->cal1->reset();
+            this->cal2->reset();
+
+            this->cal1->moveto(this->point1[0]);
+            this->cal2->moveto(this->point2[0]);
+        }
+
+        Geom::Point b1[BEZIER_MAX_LENGTH];
+        gint const nb1 = Geom::bezier_fit_cubic_r(b1, this->point1, this->npoints,
+                                               tolerance_sq, BEZIER_MAX_BEZIERS);
+        g_assert( nb1 * BEZIER_SIZE <= gint(G_N_ELEMENTS(b1)) );
+
+        Geom::Point b2[BEZIER_MAX_LENGTH];
+        gint const nb2 = Geom::bezier_fit_cubic_r(b2, this->point2, this->npoints,
+                                               tolerance_sq, BEZIER_MAX_BEZIERS);
+        g_assert( nb2 * BEZIER_SIZE <= gint(G_N_ELEMENTS(b2)) );
+
+        if ( nb1 != -1 && nb2 != -1 ) {
+            /* Fit and draw and reset state */
+#ifdef DYNA_DRAW_VERBOSE
+            g_print("nb1:%d nb2:%d\n", nb1, nb2);
+#endif
+            /* CanvasShape */
+            if (! release) {
+                this->currentcurve->reset();
+                this->currentcurve->moveto(b1[0]);
+                for (Geom::Point *bp1 = b1; bp1 < b1 + BEZIER_SIZE * nb1; bp1 += BEZIER_SIZE) {
+                    this->currentcurve->curveto(bp1[1], bp1[2], bp1[3]);
+                }
+                this->currentcurve->lineto(b2[BEZIER_SIZE*(nb2-1) + 3]);
+                for (Geom::Point *bp2 = b2 + BEZIER_SIZE * ( nb2 - 1 ); bp2 >= b2; bp2 -= BEZIER_SIZE) {
+                    this->currentcurve->curveto(bp2[2], bp2[1], bp2[0]);
+                }
+                // FIXME: dc->segments is always NULL at this point??
+                if (this->segments.empty()) { // first segment
+                    add_cap(*currentcurve, b2[0], b1[0], cap_rounding);
+                }
+                this->currentcurve->closepath();
+                currentshape->set_bpath(currentcurve.get(), true);
+            }
+
+            /* Current calligraphic */
+            for (Geom::Point *bp1 = b1; bp1 < b1 + BEZIER_SIZE * nb1; bp1 += BEZIER_SIZE) {
+                this->cal1->curveto(bp1[1], bp1[2], bp1[3]);
+            }
+            for (Geom::Point *bp2 = b2; bp2 < b2 + BEZIER_SIZE * nb2; bp2 += BEZIER_SIZE) {
+                this->cal2->curveto(bp2[1], bp2[2], bp2[3]);
+            }
+        } else {
+            /* fixme: ??? */
+#ifdef DYNA_DRAW_VERBOSE
+            g_print("[fit_and_split] failed to fit-cubic.\n");
+#endif
+            this->draw_temporary_box();
+
+            for (gint i = 1; i < this->npoints; i++) {
+                this->cal1->lineto(this->point1[i]);
+            }
+            for (gint i = 1; i < this->npoints; i++) {
+                this->cal2->lineto(this->point2[i]);
+            }
+        }
+
+        /* Fit and draw and copy last point */
+#ifdef DYNA_DRAW_VERBOSE
+        g_print("[%d]Yup\n", this->npoints);
+#endif
+        if (!release) {
+            g_assert(!this->currentcurve->is_empty());
+
+            guint32 fillColor = sp_desktop_get_color_tool(_desktop, "/tools/calligraphic", true);
+            double opacity = sp_desktop_get_master_opacity_tool(_desktop, "/tools/calligraphic");
+            double fillOpacity = sp_desktop_get_opacity_tool(_desktop, "/tools/calligraphic", true);
+            guint fill = (fillColor & 0xffffff00) | SP_COLOR_F_TO_U(opacity*fillOpacity);
+
+            auto cbp = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), currentcurve.get(), true);
+            cbp->set_fill(fill, SP_WIND_RULE_EVENODD);
+            cbp->set_stroke(0x0);
+
+            /* fixme: Cannot we cascade it to root more clearly? */
+            cbp->connect_event(sigc::bind(sigc::ptr_fun(sp_desktop_root_handler), _desktop));
+
+            this->segments.push_back(cbp);
+        }
+
+        this->point1[0] = this->point1[this->npoints - 1];
+        this->point2[0] = this->point2[this->npoints - 1];
+        this->npoints = 1;
+    } else {
+        this->draw_temporary_box();
+    }
+}
+
+void CalligraphicTool::draw_temporary_box() {
+    this->currentcurve->reset();
+
+    this->currentcurve->moveto(this->point2[this->npoints-1]);
+
+    for (gint i = this->npoints-2; i >= 0; i--) {
+        this->currentcurve->lineto(this->point2[i]);
+    }
+
+    for (gint i = 0; i < this->npoints; i++) {
+        this->currentcurve->lineto(this->point1[i]);
+    }
+
+    if (this->npoints >= 2) {
+        add_cap(*currentcurve, point1[npoints - 1], point2[npoints - 1], cap_rounding);
+    }
+
+    this->currentcurve->closepath();
+    currentshape->set_bpath(currentcurve.get(), true);
+}
+
+}
+}
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/calligraphic-tool.h b/src/ui/tools/calligraphic-tool.h
new file mode 100644
index 0000000..8f43a4f
--- /dev/null
+++ b/src/ui/tools/calligraphic-tool.h
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SP_DYNA_DRAW_CONTEXT_H_SEEN
+#define SP_DYNA_DRAW_CONTEXT_H_SEEN
+
+/*
+ * Handwriting-like drawing mode
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * The original dynadraw code:
+ *   Paul Haeberli <paul@sgi.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <list>
+#include <string>
+
+#include <2geom/point.h>
+
+#include "ui/tools/dynamic-base.h"
+
+class SPItem;
+class Path;
+
+#define DDC_MIN_PRESSURE      0.0
+#define DDC_MAX_PRESSURE      1.0
+#define DDC_DEFAULT_PRESSURE  1.0
+
+#define DDC_MIN_TILT         -1.0
+#define DDC_MAX_TILT          1.0
+#define DDC_DEFAULT_TILT      0.0
+
+namespace Inkscape {
+
+class CanvasItemBpath;
+
+namespace UI {
+namespace Tools {
+
+class CalligraphicTool : public DynamicBase {
+public:
+    CalligraphicTool(SPDesktop *desktop);
+    ~CalligraphicTool() override;
+
+    void set(const Inkscape::Preferences::Entry &val) override;
+    bool root_handler(GdkEvent *event) override;
+
+private:
+    /** newly created object remain selected */
+    bool keep_selected;
+
+    double hatch_spacing;
+    double hatch_spacing_step;
+    SPItem *hatch_item;
+    Path *hatch_livarot_path;
+    std::list<double> hatch_nearest_past;
+    std::list<double> hatch_pointer_past;
+    std::list<Geom::Point> inertia_vectors;
+    Geom::Point hatch_last_nearest, hatch_last_pointer;
+    std::list<Geom::Point> hatch_vectors;
+    bool hatch_escaped;
+    Inkscape::CanvasItemBpath *hatch_area = nullptr;
+    bool just_started_drawing;
+    bool trace_bg;
+
+	void clear_current();
+	void set_to_accumulated(bool unionize, bool subtract);
+	bool accumulate();
+	void fit_and_split(bool release);
+	void draw_temporary_box();
+	void cancel();
+	void brush();
+	bool apply(Geom::Point p);
+	void extinput(GdkEvent *event);
+	void reset(Geom::Point p);
+};
+
+}
+}
+}
+
+#endif // SP_DYNA_DRAW_CONTEXT_H_SEEN
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/connector-tool.cpp b/src/ui/tools/connector-tool.cpp
new file mode 100644
index 0000000..48302bd
--- /dev/null
+++ b/src/ui/tools/connector-tool.cpp
@@ -0,0 +1,1383 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Connector creation tool
+ *
+ * Authors:
+ *   Michael Wybrow <mjwybrow@users.sourceforge.net>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Martin Owens <doctormo@gmail.com>
+ *
+ * Copyright (C) 2005-2008  Michael Wybrow
+ * Copyright (C) 2009  Monash University
+ * Copyright (C) 2012  Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ *
+ * TODO:
+ *  o  Show a visual indicator for objects with the 'avoid' property set.
+ *  o  Allow user to change a object between a path and connector through
+ *     the interface.
+ *  o  Create an interface for setting markers (arrow heads).
+ *  o  Better distinguish between paths and connectors to prevent problems
+ *     in the node tool and paths accidentally being turned into connectors
+ *     in the connector tool.  Perhaps have a way to convert between.
+ *  o  Only call libavoid's updateEndPoint as required.  Currently we do it
+ *     for both endpoints, even if only one is moving.
+ *  o  Deal sanely with connectors with both endpoints attached to the
+ *     same connection point, and drawing of connectors attaching
+ *     overlapping shapes (currently tries to adjust connector to be
+ *     outside both bounding boxes).
+ *  o  Fix many special cases related to connectors updating,
+ *     e.g., copying a couple of shapes and a connector that are
+ *           attached to each other.
+ *     e.g., detach connector when it is moved or transformed in
+ *           one of the other contexts.
+ *  o  Cope with shapes whose ids change when they have attached
+ *     connectors.
+ *  o  During dragging motion, gobble up to and use the final motion event.
+ *     Gobbling away all duplicates after the current can occasionally result
+ *     in the path lagging behind the mouse cursor if it is no longer being
+ *     dragged.
+ *  o  Fix up libavoid's representation after undo actions.  It doesn't see
+ *     any transform signals and hence doesn't know shapes have moved back to
+ *     there earlier positions.
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * Notes:
+ *
+ *  Much of the way connectors work for user-defined points has been
+ *  changed so that it no longer defines special attributes to record
+ *  the points. Instead it uses single node paths to define points
+ *  who are then separate objects that can be fixed on the canvas,
+ *  grouped into objects and take full advantage of all transform, snap
+ *  and align functionality of all other objects.
+ *
+ *     I think that the style change between polyline and orthogonal
+ *     would be much clearer with two buttons (radio behaviour -- just
+ *     one is true).
+ *
+ *     The other tools show a label change from "New:" to "Change:"
+ *     depending on whether an object is selected.  We could consider
+ *     this but there may not be space.
+ *
+ *     Likewise for the avoid/ignore shapes buttons.  These should be
+ *     inactive when a shape is not selected in the connector context.
+ *
+ */
+
+#include "connector-tool.h"
+
+#include <string>
+#include <cstring>
+
+#include <glibmm/i18n.h>
+#include <glibmm/stringutils.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "inkscape.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-ctrl.h"
+#include "display/curve.h"
+
+#include "3rdparty/adaptagrams/libavoid/router.h"
+
+#include "object/sp-conn-end.h"
+#include "object/sp-flowtext.h"
+#include "object/sp-namedview.h"
+#include "object/sp-path.h"
+#include "object/sp-text.h"
+#include "object/sp-use.h"
+#include "object/sp-symbol.h"
+
+#include "ui/icon-names.h"
+#include "ui/knot/knot.h"
+#include "ui/widget/canvas.h"  // Enter events
+
+#include "svg/svg.h"
+
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static void cc_clear_active_knots(SPKnotList k);
+
+static void shape_event_attr_deleted(Inkscape::XML::Node *repr,
+        Inkscape::XML::Node *child, Inkscape::XML::Node *ref, gpointer data);
+
+static void shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
+        gchar const *old_value, gchar const *new_value, bool is_interactive,
+        gpointer data);
+
+static void cc_select_handle(SPKnot* knot);
+static void cc_deselect_handle(SPKnot* knot);
+static bool cc_item_is_shape(SPItem *item);
+
+/*static Geom::Point connector_drag_origin_w(0, 0);
+static bool connector_within_tolerance = false;*/
+
+static Inkscape::XML::NodeEventVector shape_repr_events = {
+    nullptr, /* child_added */
+    nullptr, /* child_added */
+    shape_event_attr_changed,
+    nullptr, /* content_changed */
+    nullptr  /* order_changed */
+};
+
+static Inkscape::XML::NodeEventVector layer_repr_events = {
+    nullptr, /* child_added */
+    shape_event_attr_deleted,
+    nullptr, /* child_added */
+    nullptr, /* content_changed */
+    nullptr  /* order_changed */
+};
+
+ConnectorTool::ConnectorTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/connector", "connector.svg")
+    , selection(nullptr)
+    , npoints(0)
+    , state(SP_CONNECTOR_CONTEXT_IDLE)
+    , red_bpath(nullptr)
+    , red_curve(nullptr)
+    , red_color(0xff00007f)
+    , green_curve(nullptr)
+    , newconn(nullptr)
+    , newConnRef(nullptr)
+    , curvature(0.0)
+    , isOrthogonal(false)
+    , active_shape(nullptr)
+    , active_shape_repr(nullptr)
+    , active_shape_layer_repr(nullptr)
+    , active_conn(nullptr)
+    , active_conn_repr(nullptr)
+    , active_handle(nullptr)
+    , selected_handle(nullptr)
+    , clickeditem(nullptr)
+    , clickedhandle(nullptr)
+    , shref(nullptr)
+    , sub_shref(nullptr)
+    , ehref(nullptr)
+    , sub_ehref(nullptr)
+{
+    this->selection = desktop->getSelection();
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection = this->selection->connectChanged(
+        sigc::mem_fun(this, &ConnectorTool::_selectionChanged)
+    );
+
+    /* Create red bpath */
+    red_bpath = new Inkscape::CanvasItemBpath(desktop->getCanvasSketch());
+    red_bpath->set_stroke(red_color);
+    red_bpath->set_fill(0x0, SP_WIND_RULE_NONZERO);
+
+    /* Create red curve */
+    this->red_curve = std::make_unique<SPCurve>();
+
+    /* Create green curve */
+    green_curve = std::make_unique<SPCurve>();
+
+    // Notice the initial selection.
+    //cc_selection_changed(this->selection, (gpointer) this);
+    this->_selectionChanged(this->selection);
+
+    this->within_tolerance = false;
+
+    sp_event_context_read(this, "curvature");
+    sp_event_context_read(this, "orthogonal");
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/connector/selcue", false)) {
+        this->enableSelectionCue();
+    }
+
+    // Make sure we see all enter events for canvas items,
+    // even if a mouse button is depressed.
+    desktop->getCanvas()->set_all_enter_events(true);
+}
+
+ConnectorTool::~ConnectorTool()
+{
+    this->_finish();
+    this->state = SP_CONNECTOR_CONTEXT_IDLE;
+
+    if (this->selection) {
+        this->selection = nullptr;
+    }
+
+    this->cc_clear_active_shape();
+    this->cc_clear_active_conn();
+
+    // Restore the default event generating behaviour.
+    _desktop->getCanvas()->set_all_enter_events(false);
+
+    this->sel_changed_connection.disconnect();
+
+    for (auto &i : this->endpt_handle) {
+        if (i) {
+            knot_unref(i);
+            i = nullptr;
+        }
+    }
+
+    if (this->shref) {
+        g_free(this->shref);
+        this->shref = nullptr;
+    }
+
+    if (this->ehref) {
+        g_free(this->shref);
+        this->shref = nullptr;
+    }
+
+    g_assert(this->newConnRef == nullptr);
+}
+
+void ConnectorTool::set(const Inkscape::Preferences::Entry &val)
+{
+    /* fixme: Proper error handling for non-numeric data.  Use a locale-independent function like
+     * g_ascii_strtod (or a thin wrapper that does the right thing for invalid values inf/nan). */
+    Glib::ustring name = val.getEntryName();
+
+    if (name == "curvature") {
+        this->curvature = val.getDoubleLimited(); // prevents NaN and +/-Inf from messing up
+    } else if (name == "orthogonal") {
+        this->isOrthogonal = val.getBool();
+    }
+}
+
+//-----------------------------------------------------------------------------
+
+
+void ConnectorTool::cc_clear_active_shape()
+{
+    if (this->active_shape == nullptr) {
+        return;
+    }
+    g_assert( this->active_shape_repr );
+    g_assert( this->active_shape_layer_repr );
+
+    this->active_shape = nullptr;
+
+    if (this->active_shape_repr) {
+        sp_repr_remove_listener_by_data(this->active_shape_repr, this);
+        Inkscape::GC::release(this->active_shape_repr);
+        this->active_shape_repr = nullptr;
+
+        sp_repr_remove_listener_by_data(this->active_shape_layer_repr, this);
+        Inkscape::GC::release(this->active_shape_layer_repr);
+        this->active_shape_layer_repr = nullptr;
+    }
+
+    cc_clear_active_knots(this->knots);
+}
+
+static void cc_clear_active_knots(SPKnotList k)
+{
+    // Hide the connection points if they exist.
+    if (k.size()) {
+        for (auto & it : k) {
+            it.first->hide();
+        }
+    }
+}
+
+void ConnectorTool::cc_clear_active_conn()
+{
+    if (this->active_conn == nullptr) {
+        return;
+    }
+    g_assert( this->active_conn_repr );
+
+    this->active_conn = nullptr;
+
+    if (this->active_conn_repr) {
+        sp_repr_remove_listener_by_data(this->active_conn_repr, this);
+        Inkscape::GC::release(this->active_conn_repr);
+        this->active_conn_repr = nullptr;
+    }
+
+    // Hide the endpoint handles.
+    for (auto & i : this->endpt_handle) {
+        if (i) {
+            i->hide();
+        }
+    }
+}
+
+
+bool ConnectorTool::_ptHandleTest(Geom::Point& p, gchar **href, gchar **subhref)
+{
+    if (this->active_handle && (this->knots.find(this->active_handle) != this->knots.end())) {
+        p = this->active_handle->pos;
+        *href = g_strdup_printf("#%s", this->active_handle->owner->getId());
+        if(this->active_handle->sub_owner) {
+            auto id = this->active_handle->sub_owner->getAttribute("id");
+            if(id) {
+                *subhref = g_strdup_printf("#%s", id);
+            }
+        } else {
+            *subhref = nullptr;
+        }
+        return true;
+    }
+    *href = nullptr;
+    *subhref = nullptr;
+    return false;
+}
+
+static void cc_select_handle(SPKnot* knot)
+{
+    knot->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_SQUARE);
+    knot->setSize(11); // Should be odd.
+    knot->setAnchor(SP_ANCHOR_CENTER);
+    knot->setFill(0x0000ffff, 0x0000ffff, 0x0000ffff, 0x0000ffff);
+    knot->updateCtrl();
+}
+
+static void cc_deselect_handle(SPKnot* knot)
+{
+    knot->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_SQUARE);
+    knot->setSize(9); // Should be odd.
+    knot->setAnchor(SP_ANCHOR_CENTER);
+    knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff, 0xff0000ff);
+    knot->updateCtrl();
+}
+
+bool ConnectorTool::item_handler(SPItem* item, GdkEvent* event)
+{
+    bool ret = false;
+
+    Geom::Point p(event->button.x, event->button.y);
+
+    switch (event->type) {
+    case GDK_BUTTON_RELEASE:
+        if (event->button.button == 1) {
+            if ((this->state == SP_CONNECTOR_CONTEXT_DRAGGING) && this->within_tolerance) {
+                this->_resetColors();
+                this->state = SP_CONNECTOR_CONTEXT_IDLE;
+            }
+
+            if (this->state != SP_CONNECTOR_CONTEXT_IDLE) {
+                // Doing something else like rerouting.
+                break;
+            }
+
+            // find out clicked item, honoring Alt
+            SPItem *item = sp_event_context_find_item(_desktop, p, event->button.state & GDK_MOD1_MASK, FALSE);
+
+            if (event->button.state & GDK_SHIFT_MASK) {
+                this->selection->toggle(item);
+            } else {
+                this->selection->set(item);
+                /* When selecting a new item, do not allow showing
+                   connection points on connectors. (yet?)
+                */
+
+                if (item != this->active_shape && !cc_item_is_connector(item)) {
+                    this->_setActiveShape(item);
+                }
+            }
+
+            ret = true;
+        }
+        break;
+
+    case GDK_MOTION_NOTIFY: {
+        auto last_pos = Geom::Point(event->motion.x, event->motion.y);
+        SPItem *item = _desktop->getItemAtPoint(last_pos, false);
+        if (cc_item_is_shape(item)) {
+            this->_setActiveShape(item);
+        }
+        ret = false;
+        break;
+    }
+    default:
+        break;
+    }
+
+    return ret;
+}
+
+bool ConnectorTool::root_handler(GdkEvent* event)
+{
+    bool ret = false;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        ret = this->_handleButtonPress(event->button);
+        break;
+
+    case GDK_MOTION_NOTIFY:
+        ret = this->_handleMotionNotify(event->motion);
+        break;
+
+    case GDK_BUTTON_RELEASE:
+        ret = this->_handleButtonRelease(event->button);
+        break;
+
+    case GDK_KEY_PRESS:
+        ret = this->_handleKeyPress(get_latin_keyval (&event->key));
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+        ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+
+bool ConnectorTool::_handleButtonPress(GdkEventButton const &bevent)
+{
+    Geom::Point const event_w(bevent.x, bevent.y);
+    /* Find desktop coordinates */
+    Geom::Point p = _desktop->w2d(event_w);
+
+    bool ret = false;
+
+        if ( bevent.button == 1 ) {
+            if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+                return true;
+            }
+
+            Geom::Point const event_w(bevent.x, bevent.y);
+
+            this->xp = bevent.x;
+            this->yp = bevent.y;
+            this->within_tolerance = true;
+
+            Geom::Point const event_dt = _desktop->w2d(event_w);
+
+            SnapManager &m = _desktop->namedview->snap_manager;
+
+            switch (this->state) {
+            case SP_CONNECTOR_CONTEXT_STOP:
+
+                /* This is allowed, if we just canceled curve */
+            case SP_CONNECTOR_CONTEXT_IDLE:
+            {
+                if ( this->npoints == 0 ) {
+                    this->cc_clear_active_conn();
+
+                    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new connector"));
+
+                    /* Set start anchor */
+                    /* Create green anchor */
+                    Geom::Point p = event_dt;
+
+                    // Test whether we clicked on a connection point
+                    bool found = this->_ptHandleTest(p, &this->shref, &this->sub_shref);
+
+                    if (!found) {
+                        // This is the first point, so just snap it to the grid
+                        // as there's no other points to go off.
+                        m.setup(_desktop);
+                        m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                        m.unSetup();
+                    }
+                    this->_setInitialPoint(p);
+
+                }
+                this->state = SP_CONNECTOR_CONTEXT_DRAGGING;
+                ret = true;
+                break;
+            }
+            case SP_CONNECTOR_CONTEXT_DRAGGING:
+            {
+                // This is the second click of a connector creation.
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                m.unSetup();
+
+                this->_setSubsequentPoint(p);
+                this->_finishSegment(p);
+
+                this->_ptHandleTest(p, &this->ehref, &this->sub_ehref);
+                if (this->npoints != 0) {
+                    this->_finish();
+                }
+                this->cc_set_active_conn(this->newconn);
+                this->state = SP_CONNECTOR_CONTEXT_IDLE;
+                ret = true;
+                break;
+            }
+            case SP_CONNECTOR_CONTEXT_CLOSE:
+            {
+                g_warning("Button down in CLOSE state");
+                break;
+            }
+            default:
+                break;
+            }
+        } else if (bevent.button == 3) {
+            if (this->state == SP_CONNECTOR_CONTEXT_REROUTING) {
+                // A context menu is going to be triggered here,
+                // so end the rerouting operation.
+                this->_reroutingFinish(&p);
+
+                this->state = SP_CONNECTOR_CONTEXT_IDLE;
+
+                // Don't set ret to TRUE, so we drop through to the
+                // parent handler which will open the context menu.
+            } else if (this->npoints != 0) {
+                this->_finish();
+                this->state = SP_CONNECTOR_CONTEXT_IDLE;
+                ret = true;
+            }
+        }
+    return ret;
+}
+
+bool ConnectorTool::_handleMotionNotify(GdkEventMotion const &mevent)
+{
+    bool ret = false;
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (mevent.state & GDK_BUTTON2_MASK || mevent.state & GDK_BUTTON3_MASK) {
+        // allow middle-button scrolling
+        return false;
+    }
+
+    Geom::Point const event_w(mevent.x, mevent.y);
+
+    if (this->within_tolerance) {
+        this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+        if ( ( abs( (gint) mevent.x - this->xp ) < this->tolerance ) &&
+             ( abs( (gint) mevent.y - this->yp ) < this->tolerance ) ) {
+            return false;   // Do not drag if we're within tolerance from origin.
+        }
+    }
+    // Once the user has moved farther than tolerance from the original location
+    // (indicating they intend to move the object, not click), then always process
+    // the motion notify coordinates as given (no snapping back to origin)
+    this->within_tolerance = false;
+
+    /* Find desktop coordinates */
+    Geom::Point p = _desktop->w2d(event_w);
+
+    SnapManager &m = _desktop->namedview->snap_manager;
+
+    switch (this->state) {
+    case SP_CONNECTOR_CONTEXT_DRAGGING:
+    {
+        gobble_motion_events(mevent.state);
+        // This is movement during a connector creation.
+        if ( this->npoints > 0 ) {
+            m.setup(_desktop);
+            m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+            m.unSetup();
+            this->selection->clear();
+            this->_setSubsequentPoint(p);
+            ret = true;
+        }
+        break;
+    }
+    case SP_CONNECTOR_CONTEXT_REROUTING:
+    {
+        gobble_motion_events(GDK_BUTTON1_MASK);
+        g_assert( SP_IS_PATH(this->clickeditem));
+
+        m.setup(_desktop);
+        m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+        m.unSetup();
+
+        // Update the hidden path
+        Geom::Affine i2d ( (this->clickeditem)->i2dt_affine() );
+        Geom::Affine d2i = i2d.inverse();
+        SPPath *path = SP_PATH(this->clickeditem);
+        SPCurve *curve = path->curve();
+        if (this->clickedhandle == this->endpt_handle[0]) {
+            Geom::Point o = this->endpt_handle[1]->pos;
+            curve->stretch_endpoints(p * d2i, o * d2i);
+        } else {
+            Geom::Point o = this->endpt_handle[0]->pos;
+            curve->stretch_endpoints(o * d2i, p * d2i);
+        }
+        sp_conn_reroute_path_immediate(path);
+
+        // Copy this to the temporary visible path
+        this->red_curve = SPCurve::copy(path->curveForEdit());
+        this->red_curve->transform(i2d);
+
+        red_bpath->set_bpath(red_curve.get());
+
+        ret = true;
+        break;
+    }
+    case SP_CONNECTOR_CONTEXT_STOP:
+        /* This is perfectly valid */
+        break;
+    default:
+        if (!this->sp_event_context_knot_mouseover()) {
+            m.setup(_desktop);
+            m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_OTHER_HANDLE));
+            m.unSetup();
+        }
+        break;
+    }
+    return ret;
+}
+
+bool ConnectorTool::_handleButtonRelease(GdkEventButton const &revent)
+{
+    bool ret = false;
+
+    if ( revent.button == 1 ) {
+        SPDocument *doc = _desktop->getDocument();
+        SnapManager &m = _desktop->namedview->snap_manager;
+
+        Geom::Point const event_w(revent.x, revent.y);
+
+        /* Find desktop coordinates */
+        Geom::Point p = _desktop->w2d(event_w);
+
+        switch (this->state) {
+        //case SP_CONNECTOR_CONTEXT_POINT:
+        case SP_CONNECTOR_CONTEXT_DRAGGING:
+        {
+            m.setup(_desktop);
+            m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+            m.unSetup();
+
+            if (this->within_tolerance) {
+                this->_finishSegment(p);
+                return true;
+            }
+            // Connector has been created via a drag, end it now.
+            this->_setSubsequentPoint(p);
+            this->_finishSegment(p);
+            // Test whether we clicked on a connection point
+            this->_ptHandleTest(p, &this->ehref, &this->sub_ehref);
+            if (this->npoints != 0) {
+                this->_finish();
+            }
+            this->cc_set_active_conn(this->newconn);
+            this->state = SP_CONNECTOR_CONTEXT_IDLE;
+            break;
+        }
+        case SP_CONNECTOR_CONTEXT_REROUTING:
+        {
+            m.setup(_desktop);
+            m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+            m.unSetup();
+            this->_reroutingFinish(&p);
+
+            doc->ensureUpToDate();
+            this->state = SP_CONNECTOR_CONTEXT_IDLE;
+            return true;
+            break;
+        }
+        case SP_CONNECTOR_CONTEXT_STOP:
+            /* This is allowed, if we just cancelled curve */
+            break;
+        default:
+            break;
+        }
+        ret = true;
+    }
+    return ret;
+}
+
+bool ConnectorTool::_handleKeyPress(guint const keyval)
+{
+    bool ret = false;
+
+    switch (keyval) {
+    case GDK_KEY_Return:
+    case GDK_KEY_KP_Enter:
+        if (this->npoints != 0) {
+            this->_finish();
+            this->state = SP_CONNECTOR_CONTEXT_IDLE;
+            ret = true;
+        }
+        break;
+    case GDK_KEY_Escape:
+        if (this->state == SP_CONNECTOR_CONTEXT_REROUTING) {
+            SPDocument *doc = _desktop->getDocument();
+
+            this->_reroutingFinish(nullptr);
+
+            DocumentUndo::undo(doc);
+
+            this->state = SP_CONNECTOR_CONTEXT_IDLE;
+            _desktop->messageStack()->flash( Inkscape::NORMAL_MESSAGE,
+                    _("Connector endpoint drag cancelled."));
+            ret = true;
+        } else if (this->npoints != 0) {
+            // if drawing, cancel, otherwise pass it up for deselecting
+            this->state = SP_CONNECTOR_CONTEXT_STOP;
+            this->_resetColors();
+            ret = true;
+        }
+        break;
+    default:
+        break;
+    }
+    return ret;
+}
+
+void ConnectorTool::_reroutingFinish(Geom::Point *const p)
+{
+    SPDocument *doc = _desktop->getDocument();
+
+    // Clear the temporary path:
+    this->red_curve->reset();
+    red_bpath->set_bpath(nullptr);
+
+    if (p != nullptr) {
+        // Test whether we clicked on a connection point
+        gchar *shape_label;
+        gchar *sub_label;
+        bool found = this->_ptHandleTest(*p, &shape_label, &sub_label);
+
+        if (found) {
+            if (this->clickedhandle == this->endpt_handle[0]) {
+                this->clickeditem->setAttribute("inkscape:connection-start", shape_label);
+                this->clickeditem->setAttribute("inkscape:connection-start-point", sub_label);
+            } else {
+                this->clickeditem->setAttribute("inkscape:connection-end", shape_label);
+                this->clickeditem->setAttribute("inkscape:connection-end-point", sub_label);
+            }
+            g_free(shape_label);
+            if(sub_label) {
+                g_free(sub_label);
+            }
+        }
+    }
+    this->clickeditem->setHidden(false);
+    sp_conn_reroute_path_immediate(SP_PATH(this->clickeditem));
+    this->clickeditem->updateRepr();
+    DocumentUndo::done(doc, _("Reroute connector"), INKSCAPE_ICON("draw-connector"));
+    this->cc_set_active_conn(this->clickeditem);
+}
+
+
+void ConnectorTool::_resetColors()
+{
+    /* Red */
+    this->red_curve->reset();
+    red_bpath->set_bpath(nullptr);
+
+    this->green_curve->reset();
+    this->npoints = 0;
+}
+
+void ConnectorTool::_setInitialPoint(Geom::Point const p)
+{
+    g_assert( this->npoints == 0 );
+
+    this->p[0] = p;
+    this->p[1] = p;
+    this->npoints = 2;
+    red_bpath->set_bpath(nullptr);
+}
+
+void ConnectorTool::_setSubsequentPoint(Geom::Point const p)
+{
+    g_assert( this->npoints != 0 );
+
+    Geom::Point o = _desktop->dt2doc(this->p[0]);
+    Geom::Point d = _desktop->dt2doc(p);
+    Avoid::Point src(o[Geom::X], o[Geom::Y]);
+    Avoid::Point dst(d[Geom::X], d[Geom::Y]);
+
+    if (!this->newConnRef) {
+        Avoid::Router *router = _desktop->getDocument()->getRouter();
+        this->newConnRef = new Avoid::ConnRef(router);
+        this->newConnRef->setEndpoint(Avoid::VertID::src, src);
+        if (this->isOrthogonal) {
+            this->newConnRef->setRoutingType(Avoid::ConnType_Orthogonal);
+        } else {
+            this->newConnRef->setRoutingType(Avoid::ConnType_PolyLine);
+        }
+    }
+    // Set new endpoint.
+    this->newConnRef->setEndpoint(Avoid::VertID::tar, dst);
+    // Immediately generate new routes for connector.
+    this->newConnRef->makePathInvalid();
+    this->newConnRef->router()->processTransaction();
+    // Recreate curve from libavoid route.
+    recreateCurve(red_curve.get(), this->newConnRef, this->curvature);
+    this->red_curve->transform(_desktop->doc2dt());
+    red_bpath->set_bpath(red_curve.get(), true);
+}
+
+
+/**
+ * Concats red, blue and green.
+ * If any anchors are defined, process these, optionally removing curves from white list
+ * Invoke _flush_white to write result back to object.
+ */
+void ConnectorTool::_concatColorsAndFlush()
+{
+    auto c = std::make_unique<SPCurve>();
+    std::swap(c, green_curve);
+
+    this->red_curve->reset();
+    red_bpath->set_bpath(nullptr);
+
+    if (c->is_empty()) {
+        return;
+    }
+
+    this->_flushWhite(c.get());
+}
+
+
+/*
+ * Flushes white curve(s) and additional curve into object
+ *
+ * No cleaning of colored curves - this has to be done by caller
+ * No rereading of white data, so if you cannot rely on ::modified, do it in caller
+ *
+ */
+
+void ConnectorTool::_flushWhite(SPCurve *c)
+{
+    /* Now we have to go back to item coordinates at last */
+    c->transform(_desktop->dt2doc());
+
+    SPDocument *doc = _desktop->getDocument();
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+
+    if ( c && !c->is_empty() ) {
+        /* We actually have something to write */
+
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+        /* Set style */
+        sp_desktop_apply_style_tool(_desktop, repr, "/tools/connector", false);
+
+        repr->setAttribute("d", sp_svg_write_path(c->get_pathvector()));
+
+        /* Attach repr */
+        auto layer = currentLayer();
+        this->newconn = SP_ITEM(layer->appendChildRepr(repr));
+        this->newconn->transform = layer->i2doc_affine().inverse();
+
+        bool connection = false;
+        this->newconn->setAttribute( "inkscape:connector-type",
+                                   this->isOrthogonal ? "orthogonal" : "polyline");
+        this->newconn->setAttribute( "inkscape:connector-curvature",
+                                   Glib::Ascii::dtostr(this->curvature).c_str());
+        if (this->shref) {
+            connection = true;
+            this->newconn->setAttribute( "inkscape:connection-start", this->shref);
+            if(this->sub_shref) {
+                this->newconn->setAttribute( "inkscape:connection-start-point", this->sub_shref);
+            }
+        }
+
+        if (this->ehref) {
+            connection = true;
+            this->newconn->setAttribute( "inkscape:connection-end", this->ehref);
+            if(this->sub_ehref) {
+                this->newconn->setAttribute( "inkscape:connection-end-point", this->sub_ehref);
+            }
+        }
+        // Process pending updates.
+        this->newconn->updateRepr();
+        doc->ensureUpToDate();
+
+        if (connection) {
+            // Adjust endpoints to shape edge.
+            sp_conn_reroute_path_immediate(SP_PATH(this->newconn));
+            this->newconn->updateRepr();
+        }
+
+        this->newconn->doWriteTransform(this->newconn->transform, nullptr, true);
+
+        // Only set the selection after we are finished with creating the attributes of
+        // the connector.  Otherwise, the selection change may alter the defaults for
+        // values like curvature in the connector context, preventing subsequent lookup
+        // of their original values.
+        this->selection->set(repr);
+        Inkscape::GC::release(repr);
+    }
+
+    DocumentUndo::done(doc, _("Create connector"), INKSCAPE_ICON("draw-connector"));
+}
+
+
+void ConnectorTool::_finishSegment(Geom::Point const /*p*/)
+{
+    if (!this->red_curve->is_empty()) {
+        green_curve->append_continuous(*red_curve);
+
+        this->p[0] = this->p[3];
+        this->p[1] = this->p[4];
+        this->npoints = 2;
+
+        this->red_curve->reset();
+    }
+}
+
+void ConnectorTool::_finish()
+{
+    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing connector"));
+
+    this->red_curve->reset();
+    this->_concatColorsAndFlush();
+
+    this->npoints = 0;
+
+    if (this->newConnRef) {
+        this->newConnRef->router()->deleteConnector(this->newConnRef);
+        this->newConnRef = nullptr;
+    }
+}
+
+
+static bool cc_generic_knot_handler(GdkEvent *event, SPKnot *knot)
+{
+    g_assert (knot != nullptr);
+
+    //g_object_ref(knot);
+    knot_ref(knot);
+
+    ConnectorTool *cc = SP_CONNECTOR_CONTEXT(
+            knot->desktop->event_context);
+
+    bool consumed = false;
+
+    gchar const *knot_tip = _("Click to join at this point");
+    switch (event->type) {
+    case GDK_ENTER_NOTIFY:
+        knot->setFlag(SP_KNOT_MOUSEOVER, TRUE);
+
+        cc->active_handle = knot;
+        if (knot_tip) {
+            knot->desktop->event_context->defaultMessageContext()->set(
+                    Inkscape::NORMAL_MESSAGE, knot_tip);
+        }
+
+        consumed = true;
+        break;
+    case GDK_LEAVE_NOTIFY:
+        knot->setFlag(SP_KNOT_MOUSEOVER, FALSE);
+
+        /* FIXME: the following test is a workaround for LP Bug #1273510.
+         * It seems that a signal is not correctly disconnected, maybe
+         * something missing in cc_clear_active_conn()? */
+        if (cc) {
+            cc->active_handle = nullptr;
+        }
+
+        if (knot_tip) {
+            knot->desktop->event_context->defaultMessageContext()->clear();
+        }
+
+        consumed = true;
+        break;
+    default:
+        break;
+    }
+
+    knot_unref(knot);
+
+    return consumed;
+}
+
+
+static bool endpt_handler(GdkEvent *event, ConnectorTool *cc)
+{
+    //g_assert( SP_IS_CONNECTOR_CONTEXT(cc) );
+
+    gboolean consumed = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        g_assert( (cc->active_handle == cc->endpt_handle[0]) ||
+                  (cc->active_handle == cc->endpt_handle[1]) );
+        if (cc->state == SP_CONNECTOR_CONTEXT_IDLE) {
+            cc->clickeditem = cc->active_conn;
+            cc->clickedhandle = cc->active_handle;
+            cc->cc_clear_active_conn();
+            cc->state = SP_CONNECTOR_CONTEXT_REROUTING;
+
+            // Disconnect from attached shape
+            unsigned ind = (cc->active_handle == cc->endpt_handle[0]) ? 0 : 1;
+            sp_conn_end_detach(cc->clickeditem, ind);
+
+            Geom::Point origin;
+            if (cc->clickedhandle == cc->endpt_handle[0]) {
+                origin = cc->endpt_handle[1]->pos;
+            } else {
+                origin = cc->endpt_handle[0]->pos;
+            }
+
+            // Show the red path for dragging.
+            auto path = static_cast<SPPath const *>(cc->clickeditem);
+            cc->red_curve = SPCurve::copy(path->curveForEdit());
+            Geom::Affine i2d = (cc->clickeditem)->i2dt_affine();
+            cc->red_curve->transform(i2d);
+            cc->red_bpath->set_bpath(cc->red_curve.get(), true);
+
+            cc->clickeditem->setHidden(true);
+
+            // The rest of the interaction rerouting the connector is
+            // handled by the context root handler.
+            consumed = TRUE;
+        }
+        break;
+    default:
+        break;
+    }
+
+    return consumed;
+}
+
+void ConnectorTool::_activeShapeAddKnot(SPItem* item, SPItem* subitem)
+{
+    SPKnot *knot = new SPKnot(_desktop, "", Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "CanvasItemCtrl:ConnectorTool:Shape");
+    knot->owner = item;
+
+    if (subitem) {
+        SPUse *use = dynamic_cast<SPUse *>(item);
+        g_assert(use != nullptr);
+        knot->sub_owner = subitem;
+        knot->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_SQUARE);
+        knot->setSize(11); // Must be odd
+        knot->setAnchor(SP_ANCHOR_CENTER);
+        knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff, 0xff0000ff);
+
+        // Set the point to the middle of the sub item
+        knot->setPosition(subitem->getAvoidRef().getConnectionPointPos() * _desktop->doc2dt(), 0);
+    } else {
+        knot->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_SQUARE);
+        knot->setSize(9); // Must be odd
+        knot->setAnchor(SP_ANCHOR_CENTER);
+        knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff, 0xff0000ff);
+
+        // Set the point to the middle of the object
+        knot->setPosition(item->getAvoidRef().getConnectionPointPos() * _desktop->doc2dt(), 0);
+    }
+
+    knot->updateCtrl();
+
+    // We don't want to use the standard knot handler.
+    knot->_event_connection.disconnect();
+    knot->_event_connection =
+        knot->ctrl->connect_event(sigc::bind(sigc::ptr_fun(cc_generic_knot_handler), knot));
+
+    knot->show();
+    this->knots[knot] = 1;
+}
+
+void ConnectorTool::_setActiveShape(SPItem *item)
+{
+    g_assert(item != nullptr );
+
+    if (this->active_shape != item) {
+        // The active shape has changed
+        // Rebuild everything
+        this->active_shape = item;
+        // Remove existing active shape listeners
+        if (this->active_shape_repr) {
+            sp_repr_remove_listener_by_data(this->active_shape_repr, this);
+            Inkscape::GC::release(this->active_shape_repr);
+
+            sp_repr_remove_listener_by_data(this->active_shape_layer_repr, this);
+            Inkscape::GC::release(this->active_shape_layer_repr);
+        }
+
+        // Listen in case the active shape changes
+        this->active_shape_repr = item->getRepr();
+        if (this->active_shape_repr) {
+            Inkscape::GC::anchor(this->active_shape_repr);
+            sp_repr_add_listener(this->active_shape_repr, &shape_repr_events, this);
+
+            this->active_shape_layer_repr = this->active_shape_repr->parent();
+            Inkscape::GC::anchor(this->active_shape_layer_repr);
+            sp_repr_add_listener(this->active_shape_layer_repr, &layer_repr_events, this);
+        }
+
+        cc_clear_active_knots(this->knots);
+
+        // The idea here is to try and add a group's children to solidify
+        // connection handling. We react to path objects with only one node.
+        for (auto& child: item->children) {
+            if(child.getAttribute("inkscape:connector")) {
+                this->_activeShapeAddKnot((SPItem *) &child, nullptr);
+            }
+        }
+        // Special connector points in a symbol
+        SPUse *use = dynamic_cast<SPUse *>(item);
+        if(use) {
+            SPItem *orig = use->root();
+            //SPItem *orig = use->get_original();
+            for (auto& child: orig->children) {
+                if(child.getAttribute("inkscape:connector")) {
+                    this->_activeShapeAddKnot(item, (SPItem *) &child);
+                }
+            }
+        }
+        // Center point to any object
+        this->_activeShapeAddKnot(item, nullptr);
+
+    } else {
+        // Ensure the item's connection_points map
+        // has been updated
+        item->document->ensureUpToDate();
+    }
+}
+
+void ConnectorTool::cc_set_active_conn(SPItem *item)
+{
+    g_assert( SP_IS_PATH(item) );
+
+    const SPCurve *curve = SP_PATH(item)->curveForEdit();
+    Geom::Affine i2dt = item->i2dt_affine();
+
+    if (this->active_conn == item) {
+        if (curve->is_empty()) {
+            // Connector is invisible because it is clipped to the boundary of
+            // two overlapping shapes.
+            this->endpt_handle[0]->hide();
+            this->endpt_handle[1]->hide();
+        } else {
+            // Just adjust handle positions.
+            Geom::Point startpt = *(curve->first_point()) * i2dt;
+            this->endpt_handle[0]->setPosition(startpt, 0);
+
+            Geom::Point endpt = *(curve->last_point()) * i2dt;
+            this->endpt_handle[1]->setPosition(endpt, 0);
+        }
+
+        return;
+    }
+
+    this->active_conn = item;
+
+    // Remove existing active conn listeners
+    if (this->active_conn_repr) {
+        sp_repr_remove_listener_by_data(this->active_conn_repr, this);
+        Inkscape::GC::release(this->active_conn_repr);
+        this->active_conn_repr = nullptr;
+    }
+
+    // Listen in case the active conn changes
+    this->active_conn_repr = item->getRepr();
+    if (this->active_conn_repr) {
+        Inkscape::GC::anchor(this->active_conn_repr);
+        sp_repr_add_listener(this->active_conn_repr, &shape_repr_events, this);
+    }
+
+    for (int i = 0; i < 2; ++i) {
+        // Create the handle if it doesn't exist
+        if ( this->endpt_handle[i] == nullptr ) {
+            SPKnot *knot = new SPKnot(_desktop,
+                                      _("<b>Connector endpoint</b>: drag to reroute or connect to new shapes"),
+                                      Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "CanvasItemCtrl:ConnectorTool:Endpoint");
+
+            knot->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_SQUARE);
+            knot->setSize(7);
+            knot->setAnchor(SP_ANCHOR_CENTER);
+            knot->setFill(0xffffff00, 0xff0000ff, 0xff0000ff, 0xff0000ff);
+            knot->setStroke(0x000000ff, 0x000000ff, 0x000000ff, 0x000000ff);
+            knot->updateCtrl();
+
+            // We don't want to use the standard knot handler,
+            // since we don't want this knot to be draggable.
+            knot->_event_connection.disconnect();
+            knot->_event_connection =
+                knot->ctrl->connect_event(sigc::bind(sigc::ptr_fun(cc_generic_knot_handler), knot));
+
+            this->endpt_handle[i] = knot;
+        }
+
+        // Remove any existing handlers
+        this->endpt_handler_connection[i].disconnect();
+        this->endpt_handler_connection[i] =
+            this->endpt_handle[i]->ctrl->connect_event(sigc::bind(sigc::ptr_fun(endpt_handler), this));
+    }
+
+    if (curve->is_empty()) {
+        // Connector is invisible because it is clipped to the boundary
+        // of two overlpapping shapes.  So, it doesn't need endpoints.
+        return;
+    }
+
+    Geom::Point startpt = *(curve->first_point()) * i2dt;
+    this->endpt_handle[0]->setPosition(startpt, 0);
+
+    Geom::Point endpt = *(curve->last_point()) * i2dt;
+    this->endpt_handle[1]->setPosition(endpt, 0);
+
+    this->endpt_handle[0]->show();
+    this->endpt_handle[1]->show();
+}
+
+void cc_create_connection_point(ConnectorTool* cc)
+{
+    if (cc->active_shape && cc->state == SP_CONNECTOR_CONTEXT_IDLE) {
+        if (cc->selected_handle) {
+            cc_deselect_handle( cc->selected_handle );
+        }
+
+        SPKnot *knot = new SPKnot(cc->getDesktop(), "", Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER,
+            "CanvasItemCtrl::ConnectorTool:ConnectionPoint");
+
+        // We do not process events on this knot.
+        knot->_event_connection.disconnect();
+
+        cc_select_handle( knot );
+        cc->selected_handle = knot;
+        cc->selected_handle->show();
+        cc->state = SP_CONNECTOR_CONTEXT_NEWCONNPOINT;
+    }
+}
+
+static bool cc_item_is_shape(SPItem *item)
+{
+    if (auto path = dynamic_cast<SPPath const *>(item)) {
+        SPCurve const *curve = path->curve();
+        if ( curve && !(curve->is_closed()) ) {
+            // Open paths are connectors.
+            return false;
+        }
+    } else if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        if (prefs->getBool("/tools/connector/ignoretext", true)) {
+            // Don't count text as a shape we can connect connector to.
+            return false;
+        }
+    }
+    return true;
+}
+
+
+bool cc_item_is_connector(SPItem *item)
+{
+    if (SP_IS_PATH(item)) {
+        bool closed = SP_PATH(item)->curveForEdit()->is_closed();
+        if (SP_PATH(item)->connEndPair.isAutoRoutingConn() && !closed) {
+            // To be considered a connector, an object must be a non-closed
+            // path that is marked with a "inkscape:connector-type" attribute.
+            return true;
+        }
+    }
+    return false;
+}
+
+
+void cc_selection_set_avoid(SPDesktop *desktop, bool const set_avoid)
+{
+    if (desktop == nullptr) {
+        return;
+    }
+
+    SPDocument *document = desktop->getDocument();
+
+    Inkscape::Selection *selection = desktop->getSelection();
+
+
+    int changes = 0;
+
+    for (SPItem *item: selection->items()) {
+        char const *value = (set_avoid) ? "true" : nullptr;
+
+        if (cc_item_is_shape(item)) {
+            item->setAttribute("inkscape:connector-avoid", value);
+            item->getAvoidRef().handleSettingChange();
+            changes++;
+        }
+    }
+
+    if (changes == 0) {
+        desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE,
+                _("Select <b>at least one non-connector object</b>."));
+        return;
+    }
+
+    char *event_desc = (set_avoid) ?
+            _("Make connectors avoid selected objects") :
+            _("Make connectors ignore selected objects");
+    DocumentUndo::done(document, event_desc, INKSCAPE_ICON("draw-connector"));
+}
+
+void ConnectorTool::_selectionChanged(Inkscape::Selection *selection)
+{
+    SPItem *item = selection->singleItem();
+    if (this->active_conn == item) {
+        // Nothing to change.
+        return;
+    }
+
+    if (item == nullptr) {
+        this->cc_clear_active_conn();
+        return;
+    }
+
+    if (cc_item_is_connector(item)) {
+        this->cc_set_active_conn(item);
+    }
+}
+
+static void shape_event_attr_deleted(Inkscape::XML::Node */*repr*/, Inkscape::XML::Node *child,
+        Inkscape::XML::Node */*ref*/, gpointer data)
+{
+    g_assert(data);
+    ConnectorTool *cc = SP_CONNECTOR_CONTEXT(data);
+
+    if (child == cc->active_shape_repr) {
+        // The active shape has been deleted.  Clear active shape.
+        cc->cc_clear_active_shape();
+    }
+}
+
+
+static void shape_event_attr_changed(Inkscape::XML::Node *repr, gchar const *name,
+        gchar const */*old_value*/, gchar const */*new_value*/, bool /*is_interactive*/, gpointer data)
+{
+    g_assert(data);
+    ConnectorTool *cc = SP_CONNECTOR_CONTEXT(data);
+
+    // Look for changes that result in onscreen movement.
+    if (!strcmp(name, "d") || !strcmp(name, "x") || !strcmp(name, "y") ||
+            !strcmp(name, "width") || !strcmp(name, "height") ||
+            !strcmp(name, "transform")) {
+        if (repr == cc->active_shape_repr) {
+            // Active shape has moved. Clear active shape.
+            cc->cc_clear_active_shape();
+        } else if (repr == cc->active_conn_repr) {
+            // The active conn has been moved.
+            // Set it again, which just sets new handle positions.
+            cc->cc_set_active_conn(cc->active_conn);
+        }
+    }
+}
+
+}
+}
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/connector-tool.h b/src/ui/tools/connector-tool.h
new file mode 100644
index 0000000..8c35ccb
--- /dev/null
+++ b/src/ui/tools/connector-tool.h
@@ -0,0 +1,164 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_CONNECTOR_CONTEXT_H
+#define SEEN_CONNECTOR_CONTEXT_H
+
+/*
+ * Connector creation tool
+ *
+ * Authors:
+ *   Michael Wybrow <mjwybrow@users.sourceforge.net>
+ *
+ * Copyright (C) 2005 Michael Wybrow
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <map>
+#include <memory>
+#include <string>
+
+#include <2geom/point.h>
+#include <sigc++/connection.h>
+
+#include "ui/tools/tool-base.h"
+
+class SPItem;
+class SPCurve;
+class SPKnot;
+
+namespace Avoid {
+    class ConnRef;
+}
+
+namespace Inkscape {
+    class CanvasItemBpath;
+    class Selection;
+
+    namespace XML {
+        class Node;
+    }
+}
+
+#define SP_CONNECTOR_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::ConnectorTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+//#define SP_IS_CONNECTOR_CONTEXT(obj) (dynamic_cast<const ConnectorTool*>((const ToolBase*)obj) != NULL)
+
+enum {
+    SP_CONNECTOR_CONTEXT_IDLE,
+    SP_CONNECTOR_CONTEXT_DRAGGING,
+    SP_CONNECTOR_CONTEXT_CLOSE,
+    SP_CONNECTOR_CONTEXT_STOP,
+    SP_CONNECTOR_CONTEXT_REROUTING,
+    SP_CONNECTOR_CONTEXT_NEWCONNPOINT
+};
+
+typedef std::map<SPKnot *, int>  SPKnotList;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class ConnectorTool : public ToolBase {
+public:
+    ConnectorTool(SPDesktop *desktop);
+    ~ConnectorTool() override;
+
+    Inkscape::Selection *selection;
+    Geom::Point p[5];
+
+    /** \invar npoints in {0, 2}. */
+    gint npoints;
+    unsigned int state : 4;
+
+    // Red curve
+    Inkscape::CanvasItemBpath *red_bpath;
+    std::unique_ptr<SPCurve> red_curve;
+    guint32 red_color;
+
+    // Green curve
+    std::unique_ptr<SPCurve> green_curve;
+
+    // The new connector
+    SPItem *newconn;
+    Avoid::ConnRef *newConnRef;
+    gdouble curvature;
+    bool isOrthogonal;
+
+    // The active shape
+    SPItem *active_shape;
+    Inkscape::XML::Node *active_shape_repr;
+    Inkscape::XML::Node *active_shape_layer_repr;
+
+    // Same as above, but for the active connector
+    SPItem *active_conn;
+    Inkscape::XML::Node *active_conn_repr;
+    sigc::connection sel_changed_connection;
+
+    // The activehandle
+    SPKnot *active_handle;
+
+    // The selected handle, used in editing mode
+    SPKnot *selected_handle;
+
+    SPItem *clickeditem;
+    SPKnot *clickedhandle;
+
+    SPKnotList knots;
+    SPKnot *endpt_handle[2]{};
+    sigc::connection endpt_handler_connection[2];
+    gchar *shref;
+    gchar *sub_shref;
+    gchar *ehref;
+    gchar *sub_ehref;
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    bool item_handler(SPItem* item, GdkEvent* event) override;
+
+    void cc_clear_active_shape();
+    void cc_set_active_conn(SPItem *item);
+    void cc_clear_active_conn();
+
+private:
+    void _selectionChanged(Inkscape::Selection *selection);
+
+    bool _handleButtonPress(GdkEventButton const &bevent);
+    bool _handleMotionNotify(GdkEventMotion const &mevent);
+    bool _handleButtonRelease(GdkEventButton const &revent);
+    bool _handleKeyPress(guint const keyval);
+
+    void _setInitialPoint(Geom::Point const p);
+    void _setSubsequentPoint(Geom::Point const p);
+    void _finishSegment(Geom::Point p);
+    void _resetColors();
+    void _finish();
+    void _concatColorsAndFlush();
+    void _flushWhite(SPCurve *gc);
+
+    void _activeShapeAddKnot(SPItem* item, SPItem* subitem);
+    void _setActiveShape(SPItem *item);
+    bool _ptHandleTest(Geom::Point& p, gchar **href, gchar **subhref);
+
+    void _reroutingFinish(Geom::Point *const p);
+};
+
+void cc_selection_set_avoid(SPDesktop *, bool const set_ignore);
+void cc_create_connection_point(ConnectorTool* cc);
+void cc_remove_connection_point(ConnectorTool* cc);
+bool cc_item_is_connector(SPItem *item);
+
+}
+}
+}
+
+#endif /* !SEEN_CONNECTOR_CONTEXT_H */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/dropper-tool.cpp b/src/ui/tools/dropper-tool.cpp
new file mode 100644
index 0000000..e7ff4fb
--- /dev/null
+++ b/src/ui/tools/dropper-tool.cpp
@@ -0,0 +1,402 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Tool for picking colors from drawing
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2005 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <glibmm/i18n.h>
+#include <gdk/gdk.h>
+#include <gdk/gdkkeysyms.h>
+
+#include <2geom/transforms.h>
+#include <2geom/circle.h>
+
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "message-context.h"
+#include "preferences.h"
+#include "selection.h"
+#include "style.h"
+#include "page-manager.h"
+
+#include "display/curve.h"
+#include "display/drawing.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-drawing.h"
+
+#include "include/macros.h"
+
+#include "object/sp-namedview.h"
+
+#include "svg/svg-color.h"
+
+#include "ui/cursor-utils.h"
+#include "ui/icon-names.h"
+#include "ui/tools/dropper-tool.h"
+#include "ui/widget/canvas.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+DropperTool::DropperTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/dropper", "dropper-pick-fill.svg")
+{
+    area = new Inkscape::CanvasItemBpath(desktop->getCanvasControls());
+    area->set_stroke(0x0000007f);
+    area->set_fill(0x0, SP_WIND_RULE_EVENODD);
+    area->hide();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    
+    if (prefs->getBool("/tools/dropper/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/dropper/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+DropperTool::~DropperTool()
+{
+    this->enableGrDrag(false);
+
+    ungrabCanvasEvents();
+
+    if (this->area) {
+        delete this->area;
+        this->area = nullptr;
+    }
+}
+
+/**
+ * Returns the current dropper context color.
+ *
+ * - If in dropping mode, returns color from selected objects.
+ * Ignored if non_dropping set to true.
+ * - If in dragging mode, returns average color on canvas, depending on radius
+ * - If in pick mode, alpha is not premultiplied. Alpha is only set if in pick mode
+ * and setalpha is true. Both values are taken from preferences.
+ *
+ * @param invert If true, invert the rgb value
+ * @param non_dropping If true, use color from canvas, even in dropping mode.
+ */
+guint32 DropperTool::get_color(bool invert, bool non_dropping) {
+    Inkscape::Preferences   *prefs = Inkscape::Preferences::get();
+
+    int pick = prefs->getInt("/tools/dropper/pick", SP_DROPPER_PICK_VISIBLE);
+    bool setalpha = prefs->getBool("/tools/dropper/setalpha", true);
+
+    // non_dropping ignores dropping mode and always uses color from canvas.
+    // Used by the clipboard
+    double r = non_dropping ? this->non_dropping_R : this->R;
+    double g = non_dropping ? this->non_dropping_G : this->G;
+    double b = non_dropping ? this->non_dropping_B : this->B;
+    double a = non_dropping ? this->non_dropping_A : this->alpha;
+
+    return SP_RGBA32_F_COMPOSE(
+        fabs(invert - r),
+        fabs(invert - g),
+        fabs(invert - b),
+       (pick == SP_DROPPER_PICK_ACTUAL && setalpha) ? a : 1.0);
+}
+
+bool DropperTool::root_handler(GdkEvent* event) {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    int ret = FALSE;
+    int pick = prefs->getInt("/tools/dropper/pick", SP_DROPPER_PICK_VISIBLE);
+
+    // Decide first what kind of 'mode' we're in.
+    if (event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE) {
+        switch (event->key.keyval) {
+            case GDK_KEY_Shift_L:
+            case GDK_KEY_Shift_R:
+                this->stroke = event->type == GDK_KEY_PRESS;
+                break;
+            case GDK_KEY_Control_L:
+            case GDK_KEY_Control_R:
+                this->dropping = event->type == GDK_KEY_PRESS;
+                break;
+            case GDK_KEY_Alt_L:
+            case GDK_KEY_Alt_R:
+                this->invert = event->type == GDK_KEY_PRESS;
+                break;
+        }
+    }
+
+    // Get color from selected object
+    // Only if dropping mode enabled and object's color is set.
+    // Otherwise dropping mode disabled.
+    if(this->dropping) {
+        Inkscape::Selection *selection = _desktop->getSelection();
+        g_assert(selection);
+        guint32 apply_color;
+        bool apply_set = false;
+        for (auto& obj: selection->objects()) {
+            if(obj->style) {
+                double opacity = 1.0;
+                if(!this->stroke && obj->style->fill.set) {
+                    if(obj->style->fill_opacity.set) {
+                        opacity = SP_SCALE24_TO_FLOAT(obj->style->fill_opacity.value);
+                    }
+                    apply_color = obj->style->fill.value.color.toRGBA32(opacity);
+                    apply_set = true;
+                } else if(this->stroke && obj->style->stroke.set) {
+                    if(obj->style->stroke_opacity.set) {
+                        opacity = SP_SCALE24_TO_FLOAT(obj->style->stroke_opacity.value);
+                    }
+                    apply_color = obj->style->stroke.value.color.toRGBA32(opacity);
+                    apply_set = true;
+                }
+            }
+        }
+        if(apply_set) {
+            this->R = SP_RGBA32_R_F(apply_color);
+            this->G = SP_RGBA32_G_F(apply_color);
+            this->B = SP_RGBA32_B_F(apply_color);
+            this->alpha = SP_RGBA32_A_F(apply_color);
+        } else {
+            // This means that having no selection or some other error
+            // we will default back to normal dropper mode.
+            this->dropping = false;
+        }
+    }
+
+    switch (event->type) {
+	case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                this->centre = Geom::Point(event->button.x, event->button.y);
+                this->dragging = true;
+                ret = TRUE;
+            }
+
+            grabCanvasEvents(Gdk::KEY_PRESS_MASK      |
+                             Gdk::KEY_RELEASE_MASK    |
+                             Gdk::BUTTON_RELEASE_MASK |
+                             Gdk::POINTER_MOTION_MASK |
+                             Gdk::BUTTON_PRESS_MASK   );
+            break;
+
+	case GDK_MOTION_NOTIFY:
+            if (event->motion.state & GDK_BUTTON2_MASK || event->motion.state & GDK_BUTTON3_MASK) {
+                // pass on middle and right drag
+                ret = FALSE;
+                break;
+            } else {
+                // otherwise, constantly calculate color no matter if any button pressed or not
+
+                Geom::IntRect pick_area;
+                if (this->dragging) {
+                    // calculate average
+
+                    // radius
+                    double rw = std::min(Geom::L2(Geom::Point(event->button.x, event->button.y) - this->centre), 400.0);
+                    if (rw == 0) { // happens sometimes, little idea why...
+                        break;
+                    }
+                    this->radius = rw;
+
+                    Geom::Point const cd = _desktop->w2d(this->centre);
+                    Geom::Affine const w2dt = _desktop->w2d();
+                    const double scale = rw * w2dt.descrim();
+                    Geom::Affine const sm( Geom::Scale(scale, scale) * Geom::Translate(cd) );
+
+                    // Show circle on canvas
+                    Geom::PathVector path = Geom::Path(Geom::Circle(0, 0, 1)); // Unit circle centered at origin.
+                    path *= sm;
+                    this->area->set_bpath(path);
+                    this->area->show();
+
+                    /* Get buffer */
+                    Geom::Rect r(this->centre, this->centre);
+                    r.expandBy(rw);
+                    if (!r.hasZeroArea()) {
+                        pick_area = r.roundOutwards();
+
+                    }
+                } else {
+                    // pick single pixel
+                    pick_area = Geom::IntRect::from_xywh(floor(event->button.x), floor(event->button.y), 1, 1);
+                }
+
+                Inkscape::CanvasItemDrawing *canvas_item_drawing = _desktop->getCanvasDrawing();
+                Inkscape::Drawing *drawing = canvas_item_drawing->get_drawing();
+
+                // Ensure drawing up-to-date. (Is this really necessary?)
+                drawing->update();
+
+                // Get average color.
+                double R, G, B, A;
+                drawing->average_color(pick_area, R, G, B, A);
+
+                if (pick == SP_DROPPER_PICK_VISIBLE) {
+                    // compose with page color
+                    auto bg = _desktop->getDocument()->getPageManager().getDefaultBackgroundColor();
+                    R = R + bg[0] * (1 - A);
+                    G = G + bg[1] * (1 - A);
+                    B = B + bg[2] * (1 - A);
+                    A = 1.0;
+                } else {
+                    // un-premultiply color channels
+                    if (A > 0) {
+                        R /= A;
+                        G /= A;
+                        B /= A;
+                    }
+                }
+
+                if (fabs(A) < 1e-4) {
+                    A = 0; // suppress exponentials, CSS does not allow that
+                }
+
+                // remember color
+                if (!this->dropping) {
+                    this->R = R;
+                    this->G = G;
+                    this->B = B;
+                    this->alpha = A;
+                }
+                // remember color from canvas, even in dropping mode
+                // These values are used by the clipboard
+                this->non_dropping_R = R;
+                this->non_dropping_G = G;
+                this->non_dropping_B = B;
+                this->non_dropping_A = A;
+
+                ret = TRUE;
+            }
+            break;
+
+	case GDK_BUTTON_RELEASE:
+            if (event->button.button == 1) {
+                this->area->hide();
+		this->dragging = false;
+
+                ungrabCanvasEvents();
+
+                Inkscape::Selection *selection = _desktop->getSelection();
+                g_assert(selection);
+                std::vector<SPItem *> old_selection(selection->items().begin(), selection->items().end());
+                if(this->dropping) {
+		    Geom::Point const button_w(event->button.x, event->button.y);
+		    // remember clicked item, disregarding groups, honoring Alt
+		    this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
+
+                    // Change selected object to object under cursor
+                    if (this->item_to_select) {
+                        std::vector<SPItem *> vec(selection->items().begin(), selection->items().end());
+                        selection->set(this->item_to_select);
+                    }
+                }
+
+                auto picked_color = ColorRGBA(this->get_color(this->invert));
+
+                // One time pick has active signal, call them all and clear.
+                if (!onetimepick_signal.empty())
+                {
+                    onetimepick_signal.emit(&picked_color);
+                    onetimepick_signal.clear();
+                    // Do this last as it destroys the picker tool.
+                    sp_toggle_dropper(_desktop);
+                    return true;
+                }
+
+                // do the actual color setting
+                sp_desktop_set_color(_desktop, picked_color, false, !this->stroke);
+
+                // REJON: set aux. toolbar input to hex color!
+                if (!(_desktop->getSelection()->isEmpty())) {
+                    DocumentUndo::done(_desktop->getDocument(), _("Set picked color"), INKSCAPE_ICON("color-picker"));
+                }
+                if(this->dropping) {
+                    selection->setList(old_selection);
+                }
+
+
+                ret = TRUE;
+            }
+            break;
+
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval(&event->key)) {
+          case GDK_KEY_Up:
+          case GDK_KEY_Down:
+          case GDK_KEY_KP_Up:
+          case GDK_KEY_KP_Down:
+            // prevent the zoom field from activation
+            if (!MOD__CTRL_ONLY(event)) {
+                ret = TRUE;
+            }
+            break;
+          case GDK_KEY_Escape:
+              _desktop->getSelection()->clear();
+              break;
+        }
+        break;
+    }
+
+    // set the status message to the right text.
+    gchar c[64];
+    sp_svg_write_color(c, sizeof(c), this->get_color(this->invert));
+
+    // alpha of color under cursor, to show in the statusbar
+    // locale-sensitive printf is OK, since this goes to the UI, not into SVG
+    gchar *alpha = g_strdup_printf(_(" alpha %.3g"), this->alpha);
+    // where the color is picked, to show in the statusbar
+    gchar *where = this->dragging ? g_strdup_printf(_(", averaged with radius %d"), (int) this->radius) : g_strdup_printf("%s", _(" under cursor"));
+    // message, to show in the statusbar
+    const gchar *message = this->dragging ? _("<b>Release mouse</b> to set color.") : _("<b>Click</b> to set fill, <b>Shift+click</b> to set stroke; <b>drag</b> to average color in area; with <b>Alt</b> to pick inverse color; <b>Ctrl+C</b> to copy the color under mouse to clipboard");
+
+    this->defaultMessageContext()->setF(
+        Inkscape::NORMAL_MESSAGE,
+        "<b>%s%s</b>%s. %s", c,
+        (pick == SP_DROPPER_PICK_VISIBLE) ? "" : alpha, where, message);
+
+    g_free(where);
+    g_free(alpha);
+
+    // Set the right cursor for the mode and apply the special Fill color
+    _cursor_filename = (this->dropping ? (this->stroke ? "dropper-drop-stroke.svg" : "dropper-drop-fill.svg") :
+                                        (this->stroke ? "dropper-pick-stroke.svg" : "dropper-pick-fill.svg") );
+
+    // We do this ourselves to get color correct.
+    auto display = _desktop->getCanvas()->get_display();
+    auto window = _desktop->getCanvas()->get_window();
+    auto cursor = load_svg_cursor(display, window, _cursor_filename, get_color(invert));
+    window->set_cursor(cursor);
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+}
+}
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/dropper-tool.h b/src/ui/tools/dropper-tool.h
new file mode 100644
index 0000000..4584ae9
--- /dev/null
+++ b/src/ui/tools/dropper-tool.h
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_DROPPER_CONTEXT_H__
+#define __SP_DROPPER_CONTEXT_H__
+
+/*
+ * Tool for picking colors from drawing
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2002 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <2geom/point.h>
+
+#include "color-rgba.h"
+#include "ui/tools/tool-base.h"
+
+struct SPCanvasItem;
+
+#define SP_DROPPER_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::DropperTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_DROPPER_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::DropperTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+enum {
+      SP_DROPPER_PICK_VISIBLE,
+      SP_DROPPER_PICK_ACTUAL  
+};
+enum {
+  DONT_REDRAW_CURSOR,
+  DRAW_FILL_CURSOR,
+  DRAW_STROKE_CURSOR
+};
+
+namespace Inkscape {
+
+class CanvasItemBpath;
+
+namespace UI {
+namespace Tools {
+
+class DropperTool : public ToolBase {
+public:
+    DropperTool(SPDesktop *desktop);
+    ~DropperTool() override;
+
+    guint32 get_color(bool invert = false, bool non_dropping = false);
+    sigc::signal<void, ColorRGBA *> onetimepick_signal;
+
+protected:
+    bool root_handler(GdkEvent *event) override;
+
+private:
+    // Stored color.
+    double R = 0.0;
+    double G = 0.0;
+    double B = 0.0;
+    double alpha = 0.0;
+    // Stored color taken from canvas. Used by clipboard.
+    // Identical to R, G, B, alpha if dropping disabled.
+    double non_dropping_R = 0.0;
+    double non_dropping_G = 0.0;
+    double non_dropping_B = 0.0;
+    double non_dropping_A = 0.0;
+
+    bool invert = false;   ///< Set color to inverse rgb value
+    bool stroke = false;   ///< Set to stroke color. In dropping mode, set from stroke color
+    bool dropping = false; ///< When true, get color from selected objects instead of canvas
+    bool dragging = false; ///< When true, get average color for region on canvas, instead of a single point
+
+    double radius = 0.0;                       ///< Size of region under dragging mode
+    Inkscape::CanvasItemBpath* area = nullptr; ///< Circle depicting region's borders in dragging mode
+    Geom::Point centre {0, 0};                 ///< Center of region in dragging mode
+
+};
+
+}
+}
+}
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/dynamic-base.cpp b/src/ui/tools/dynamic-base.cpp
new file mode 100644
index 0000000..de0ab07
--- /dev/null
+++ b/src/ui/tools/dynamic-base.cpp
@@ -0,0 +1,155 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Common drawing mode. Base class of Eraser and Calligraphic tools.
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/dynamic-base.h"
+
+#include "message-context.h"
+#include "desktop.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+
+#include "util/units.h"
+
+using Inkscape::Util::Unit;
+using Inkscape::Util::Quantity;
+using Inkscape::Util::unit_table;
+
+#define MIN_PRESSURE      0.0
+#define MAX_PRESSURE      1.0
+#define DEFAULT_PRESSURE  1.0
+
+#define DRAG_MIN 0.0
+#define DRAG_DEFAULT 1.0
+#define DRAG_MAX 1.0
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+DynamicBase::DynamicBase(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename)
+    : ToolBase(desktop, prefs_path, cursor_filename)
+    , accumulated(nullptr)
+    , currentshape(nullptr)
+    , currentcurve(nullptr)
+    , cal1(nullptr)
+    , cal2(nullptr)
+    , point1()
+    , point2()
+    , npoints(0)
+    , repr(nullptr)
+    , cur(0, 0)
+    , vel(0, 0)
+    , vel_max(0)
+    , acc(0, 0)
+    , ang(0, 0)
+    , last(0, 0)
+    , del(0, 0)
+    , pressure(DEFAULT_PRESSURE)
+    , xtilt(0)
+    , ytilt(0)
+    , dragging(false)
+    , usepressure(false)
+    , usetilt(false)
+    , mass(0.3)
+    , drag(DRAG_DEFAULT)
+    , angle(30.0)
+    , width(0.2)
+    , vel_thin(0.1)
+    , flatness(0.9)
+    , tremor(0)
+    , cap_rounding(0)
+    , is_drawing(false)
+    , abs_width(false)
+{
+}
+
+DynamicBase::~DynamicBase() {
+    for (auto segment : segments) {
+        delete segment;
+    }
+    segments.clear();
+
+    if (this->currentshape) {
+        delete currentshape;
+    }
+}
+
+void DynamicBase::set(const Inkscape::Preferences::Entry& value) {
+    Glib::ustring path = value.getEntryName();
+    
+    // ignore preset modifications
+    static Glib::ustring const presets_path = getPrefsPath() + "/preset";
+    Glib::ustring const &full_path = value.getPath();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Unit const *unit = unit_table.getUnit(prefs->getString("/tools/calligraphic/unit"));
+
+    if (full_path.compare(0, presets_path.size(), presets_path) == 0) {
+    	return;
+    }
+
+    if (path == "mass") {
+        this->mass = 0.01 * CLAMP(value.getInt(10), 0, 100);
+    } else if (path == "wiggle") {
+        this->drag = CLAMP((1 - 0.01 * value.getInt()), DRAG_MIN, DRAG_MAX); // drag is inverse to wiggle
+    } else if (path == "angle") {
+        this->angle = CLAMP(value.getDouble(), -90, 90);
+    } else if (path == "width") {
+        this->width = 0.01 * CLAMP(value.getDouble(), Quantity::convert(0.001, unit, "px"), Quantity::convert(100, unit, "px"));
+    } else if (path == "thinning") {
+        this->vel_thin = 0.01 * CLAMP(value.getInt(10), -100, 100);
+    } else if (path == "tremor") {
+        this->tremor = 0.01 * CLAMP(value.getInt(), 0, 100);
+    } else if (path == "flatness") {
+        this->flatness = 0.01 * CLAMP(value.getInt(), -100, 100);
+    } else if (path == "usepressure") {
+        this->usepressure = value.getBool();
+    } else if (path == "usetilt") {
+        this->usetilt = value.getBool();
+    } else if (path == "abs_width") {
+        this->abs_width = value.getBool();
+    } else if (path == "cap_rounding") {
+        this->cap_rounding = value.getDouble();
+    }
+}
+
+/* Get normalized point */
+Geom::Point DynamicBase::getNormalizedPoint(Geom::Point v) const {
+    auto drect = _desktop->get_display_area();
+
+    double const max = drect.maxExtent();
+
+    return (v - drect.bounds().min()) / max;
+}
+
+/* Get view point */
+Geom::Point DynamicBase::getViewPoint(Geom::Point n) const {
+    auto drect = _desktop->get_display_area();
+
+    double const max = drect.maxExtent();
+
+    return n * max + drect.bounds().min();
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/dynamic-base.h b/src/ui/tools/dynamic-base.h
new file mode 100644
index 0000000..ce62166
--- /dev/null
+++ b/src/ui/tools/dynamic-base.h
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef COMMON_CONTEXT_H_SEEN
+#define COMMON_CONTEXT_H_SEEN
+
+/*
+ * Common drawing mode. Base class of Eraser and Calligraphic tools.
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * The original dynadraw code:
+ *   Paul Haeberli <paul@sgi.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2008 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/tool-base.h"
+
+#include <memory>
+
+class SPCurve;
+
+namespace Inkscape {
+    namespace XML {
+        class Node;
+    }
+}
+
+#define SAMPLING_SIZE 8        /* fixme: ?? */
+
+namespace Inkscape {
+
+class CanvasItemBpath;
+
+namespace UI {
+namespace Tools {
+
+class DynamicBase : public ToolBase {
+public:
+    DynamicBase(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename);
+    ~DynamicBase() override;
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+
+protected:
+    /** accumulated shape which ultimately goes in svg:path */
+    std::unique_ptr<SPCurve> accumulated;
+
+    /** canvas items for "committed" segments */
+    std::vector<Inkscape::CanvasItemBpath *> segments;
+
+    /** canvas item for red "leading" segment */
+    Inkscape::CanvasItemBpath *currentshape;
+
+    /** shape of red "leading" segment */
+    std::unique_ptr<SPCurve> currentcurve;
+
+    /** left edge of the stroke; combined to get accumulated */
+    std::unique_ptr<SPCurve> cal1;
+
+    /** right edge of the stroke; combined to get accumulated */
+    std::unique_ptr<SPCurve> cal2;
+
+    /** left edge points for this segment */
+    Geom::Point point1[SAMPLING_SIZE];
+
+    /** right edge points for this segment */
+    Geom::Point point2[SAMPLING_SIZE];
+
+    /** number of edge points for this segment */
+    gint npoints;
+
+    /* repr */
+    Inkscape::XML::Node *repr;
+
+    /* common */
+    Geom::Point cur;
+    Geom::Point vel;
+    double vel_max;
+    Geom::Point acc;
+    Geom::Point ang;
+    Geom::Point last;
+    Geom::Point del;
+
+    /* extended input data */
+    gdouble pressure;
+    gdouble xtilt;
+    gdouble ytilt;
+
+    /* attributes */
+    bool dragging;           /* mouse state: mouse is dragging */
+    bool usepressure;
+    bool usetilt;
+    double mass, drag;
+    double angle;
+    double width;
+
+    double vel_thin;
+    double flatness;
+    double tremor;
+    double cap_rounding;
+
+    bool is_drawing;
+
+    /** uses absolute width independent of zoom */
+    bool abs_width;
+
+	Geom::Point getViewPoint(Geom::Point n) const;
+	Geom::Point getNormalizedPoint(Geom::Point v) const;
+};
+
+}
+}
+}
+
+#endif // COMMON_CONTEXT_H_SEEN
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
+
diff --git a/src/ui/tools/eraser-tool.cpp b/src/ui/tools/eraser-tool.cpp
new file mode 100644
index 0000000..5b9cbab
--- /dev/null
+++ b/src/ui/tools/eraser-tool.cpp
@@ -0,0 +1,1229 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Eraser drawing mode
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   MenTaLguY <mental@rydia.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *   Rafael Siejakowski <rs@rs-math.net>
+ *
+ * The original dynadraw code:
+ *   Paul Haeberli <paul@sgi.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2005 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2005-2007 bulia byak
+ * Copyright (C) 2006 MenTaLguY
+ * Copyright (C) 2008 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#define noERASER_VERBOSE
+
+#include "eraser-tool.h"
+
+#include <string>
+#include <cstring>
+#include <numeric>
+
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include <2geom/bezier-utils.h>
+#include <2geom/pathvector.h>
+
+#include "context-fns.h"
+#include "desktop-events.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "layer-manager.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "path-chemistry.h"
+#include "rubberband.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+
+#include "include/macros.h"
+
+#include "object/sp-clippath.h"
+#include "object/sp-image.h"
+#include "object/sp-item-group.h"
+#include "object/sp-path.h"
+#include "object/sp-rect.h"
+#include "object/sp-root.h"
+#include "object/sp-shape.h"
+#include "object/sp-text.h"
+#include "object/sp-use.h"
+
+#include "ui/icon-names.h"
+
+#include "svg/svg.h"
+
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+extern EraserToolMode const DEFAULT_ERASER_MODE = EraserToolMode::CUT;
+
+EraserTool::EraserTool(SPDesktop *desktop)
+    : DynamicBase(desktop, "/tools/eraser", "eraser.svg")
+{
+    accumulated.reset(new SPCurve());
+    currentcurve.reset(new SPCurve());
+
+    cal1.reset(new SPCurve());
+    cal2.reset(new SPCurve());
+
+    currentshape = new Inkscape::CanvasItemBpath(desktop->getCanvasSketch());
+    currentshape->set_stroke(0x0);
+    currentshape->set_fill(trace_color_rgba, trace_wind_rule);
+
+    /* fixme: Cannot we cascade it to root more clearly? */
+    currentshape->connect_event(sigc::bind(sigc::ptr_fun(sp_desktop_root_handler), desktop));
+
+    sp_event_context_read(this, "mass");
+    sp_event_context_read(this, "wiggle");
+    sp_event_context_read(this, "angle");
+    sp_event_context_read(this, "width");
+    sp_event_context_read(this, "thinning");
+    sp_event_context_read(this, "tremor");
+    sp_event_context_read(this, "flatness");
+    sp_event_context_read(this, "tracebackground");
+    sp_event_context_read(this, "usepressure");
+    sp_event_context_read(this, "usetilt");
+    sp_event_context_read(this, "abs_width");
+    sp_event_context_read(this, "cap_rounding");
+
+    is_drawing = false;
+    //TODO not sure why get 0.01 if slider width == 0, maybe a double/int problem
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/eraser/selcue", false) != 0) {
+        enableSelectionCue();
+    }
+    _updateMode();
+
+    // TODO temp force:
+    enableSelectionCue();
+}
+
+EraserTool::~EraserTool()
+{
+    delete currentshape;
+    currentshape = nullptr;
+}
+
+/**  Reads the current Eraser mode from Preferences and sets `mode` accordingly. */
+void EraserTool::_updateMode()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (!prefs) {
+        return;
+    }
+
+    int mode_idx = prefs->getInt("/tools/eraser/mode", 1); // Cut mode is default
+
+    // Note: the integer indices must agree with those in EraserToolbar::_modeAsInt()
+    if (mode_idx == 0) {
+        mode = EraserToolMode::DELETE;
+    } else if (mode_idx == 1) {
+        mode = EraserToolMode::CUT;
+    } else if (mode_idx == 2) {
+        mode = EraserToolMode::CLIP;
+    } else {
+        g_printerr("Error: invalid mode setting \"%d\" for Eraser tool!", mode_idx);
+        mode = DEFAULT_ERASER_MODE;
+    }
+}
+
+// TODO: After switch to C++20, replace this with std::lerp
+inline double flerp(double const f0, double const f1, double const p)
+{
+    return f0 + (f1 - f0) * p;
+}
+
+inline double square(double const x)
+{
+    return x * x;
+}
+
+void EraserTool::_reset(Geom::Point p)
+{
+    last = cur = getNormalizedPoint(p);
+    vel = Geom::Point(0, 0);
+    vel_max = 0;
+    acc = Geom::Point(0, 0);
+    ang = Geom::Point(0, 0);
+    del = Geom::Point(0, 0);
+}
+
+void EraserTool::_extinput(GdkEvent *event)
+{
+    if (gdk_event_get_axis(event, GDK_AXIS_PRESSURE, &pressure)) {
+        pressure = CLAMP(pressure, min_pressure, max_pressure);
+    } else {
+        pressure = default_pressure;
+    }
+
+    if (gdk_event_get_axis(event, GDK_AXIS_XTILT, &xtilt)) {
+        xtilt = CLAMP(xtilt, min_tilt, max_tilt);
+    } else {
+        xtilt = default_tilt;
+    }
+
+    if (gdk_event_get_axis(event, GDK_AXIS_YTILT, &ytilt)) {
+        ytilt = CLAMP(ytilt, min_tilt, max_tilt);
+    } else {
+        ytilt = default_tilt;
+    }
+}
+
+bool EraserTool::_apply(Geom::Point p)
+{
+    /* Calculate force and acceleration */
+    Geom::Point n = getNormalizedPoint(p);
+    Geom::Point force = n - cur;
+
+    // If force is below the absolute threshold `epsilon`,
+    // or we haven't yet reached `vel_start` (i.e. at the beginning of stroke)
+    // _and_ the force is below the (higher) `epsilon_start` threshold,
+    // discard this move.
+    // This prevents flips, blobs, and jerks caused by microscopic tremor of the tablet pen,
+    // especially bothersome at the start of the stroke where we don't yet have the inertia to
+    // smooth them out.
+    if (Geom::L2(force) < epsilon || (vel_max < vel_start && Geom::L2(force) < epsilon_start)) {
+        return false;
+    }
+
+    // Calculate mass
+    double const m = flerp(1.0, 160.0, mass);
+    acc = force / m;
+    vel += acc; // Calculate new velocity
+    double const speed = Geom::L2(vel);
+
+    if (speed > vel_max) {
+        vel_max = speed;
+    } else if (speed < epsilon) {
+        return false; // return early if movement is insignificant
+    }
+
+    /* Calculate angle of eraser tool */
+    double angle_fixed{0.0};
+    if (usetilt) {
+        // 1a. calculate nib angle from input device tilt:
+        Geom::Point normal{ytilt, xtilt};
+        if (!Geom::is_zero(normal)) {
+            angle_fixed = Geom::atan2(normal);
+        }
+    } else {
+        // 1b. fixed angle (absolutely flat nib):
+        angle_fixed = angle * M_PI / 180.0; // convert to radians
+    }
+    if (flatness < 0.0) {
+        // flips direction. Useful when usetilt is true
+        // allows simulating both pen/charcoal and broad-nibbed pen
+        angle_fixed *= -1;
+    }
+
+    // 2. Angle perpendicular to vel (absolutely non-flat nib):
+    double angle_dynamic = Geom::atan2(Geom::rot90(vel));
+    // flip angle_dynamic to force it to be in the same half-circle as angle_fixed
+    bool flipped = false;
+    if (fabs(angle_dynamic - angle_fixed) > M_PI_2) {
+        angle_dynamic += M_PI;
+        flipped = true;
+    }
+    // normalize angle_dynamic
+    if (angle_dynamic > M_PI) {
+        angle_dynamic -= 2 * M_PI;
+    }
+    if (angle_dynamic < -M_PI) {
+        angle_dynamic += 2 * M_PI;
+    }
+
+    // 3. Average them using flatness parameter:
+    // find the flatness-weighted bisector angle, unflip if angle_dynamic was flipped
+    // FIXME: when `vel` is oscillating around the fixed angle, the new_ang flips back and forth.
+    // How to avoid this?
+    double new_ang = flerp(angle_dynamic, angle_fixed, fabs(flatness)) - (flipped ? M_PI : 0);
+
+    // Try to detect a sudden flip when the new angle differs too much from the previous for the
+    // current velocity; in that case discard this move
+    double angle_delta = Geom::L2(Geom::Point(cos(new_ang), sin(new_ang)) - ang);
+    if (angle_delta / speed > 4000) {
+        return false;
+    }
+
+    // convert to point
+    ang = Geom::Point(cos(new_ang), sin(new_ang));
+
+    /* Apply drag */
+    double const d = flerp(0.0, 0.5, square(drag));
+    vel *= 1.0 - d;
+
+    /* Update position */
+    last = cur;
+    cur += vel;
+
+    return true;
+}
+
+void EraserTool::_brush()
+{
+    g_assert(npoints >= 0 && npoints < SAMPLING_SIZE);
+
+    // How much velocity thins strokestyle
+    double const vel_thinning = flerp(0, 160, vel_thin);
+
+    // Influence of pressure on thickness
+    double const pressure_thick = (usepressure ? pressure : 1.0);
+
+    // get the real brush point, not the same as pointer (affected by mass drag)
+    Geom::Point brush = getViewPoint(cur);
+
+    double const trace_thick = 1;
+    double const speed = Geom::L2(vel);
+    double effective_width = (pressure_thick * trace_thick - vel_thinning * speed) * width;
+
+    double tremble_left = 0, tremble_right = 0;
+    if (tremor > 0) {
+        // obtain two normally distributed random variables, using polar Box-Muller transform
+        double y1, y2;
+        _generateNormalDist2(y1, y2);
+
+        // deflect both left and right edges randomly and independently, so that:
+        // (1) tremor=1 corresponds to sigma=1, decreasing tremor narrows the bell curve;
+        // (2) deflection depends on width, but is upped for small widths for better visual uniformity across widths;
+        // (3) deflection somewhat depends on speed, to prevent fast strokes looking
+        //     comparatively smooth and slow ones excessively jittery
+        double const width_coefficient = 0.15 + 0.8 * effective_width;
+        double const speed_coefficient = 0.35 + 14 * speed;
+        double const total_coefficient = tremor * width_coefficient * speed_coefficient;
+
+        tremble_left  = y1 * total_coefficient;
+        tremble_right = y2 * total_coefficient;
+    }
+
+    double const min_width = 0.02 * width;
+    if (effective_width < min_width) {
+        effective_width = min_width;
+    }
+
+    double dezoomify_factor = 0.05 * 1000;
+    if (!abs_width) {
+        dezoomify_factor /= _desktop->current_zoom();
+    }
+
+    Geom::Point del_left  = dezoomify_factor * (effective_width + tremble_left)  * ang;
+    Geom::Point del_right = dezoomify_factor * (effective_width + tremble_right) * ang;
+
+    point1[npoints] = brush + del_left;
+    point2[npoints] = brush - del_right;
+
+    if (nowidth) {
+        point1[npoints] = Geom::middle_point(point1[npoints], point2[npoints]);
+    }
+    del = Geom::middle_point(del_left, del_right);
+
+    npoints++;
+}
+
+void EraserTool::_generateNormalDist2(double &r1, double &r2)
+{
+    // obtain two normally distributed random variables, using polar Box-Muller transform
+    double x1, x2, w;
+    do {
+        x1 = 2.0 * g_random_double_range(0, 1) - 1.0;
+        x2 = 2.0 * g_random_double_range(0, 1) - 1.0;
+        w = square(x1) + square(x2);
+    } while (w >= 1.0);
+    w = sqrt(-2.0 * log(w) / w);
+    r1 = x1 * w;
+    r2 = x2 * w;
+}
+
+void EraserTool::_cancel()
+{
+    dragging = false;
+    is_drawing = false;
+    ungrabCanvasEvents();
+
+    _removeTemporarySegments();
+
+    /* reset accumulated curve */
+    accumulated->reset();
+    _clearCurrent();
+    repr = nullptr;
+}
+
+/** Removes all temporary line segments */
+void EraserTool::_removeTemporarySegments()
+{
+    for (auto segment : segments) {
+        delete segment;
+    }
+    segments.clear();
+}
+
+bool EraserTool::root_handler(GdkEvent* event)
+{
+    bool ret = false;
+    _updateMode();
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (!Inkscape::have_viable_layer(_desktop, defaultMessageContext())) {
+                    return true;
+                }
+
+                Geom::Point const button_w(event->button.x, event->button.y);
+                Geom::Point const button_dt(_desktop->w2d(button_w));
+
+                _reset(button_dt);
+                _extinput(event);
+                _apply(button_dt);
+                accumulated->reset();
+
+                repr = nullptr;
+
+                if (mode == EraserToolMode::DELETE) {
+                    auto rubberband = Inkscape::Rubberband::get(_desktop);
+                    rubberband->start(_desktop, button_dt);
+                    rubberband->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                }
+                /* initialize first point */
+                npoints = 0;
+
+                grabCanvasEvents();
+                is_drawing = true;
+                ret = true;
+            }
+            break;
+
+        case GDK_MOTION_NOTIFY: {
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+            _extinput(event);
+
+            message_context->clear();
+
+            if (is_drawing && (event->motion.state & GDK_BUTTON1_MASK)) {
+                dragging = true;
+
+                message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drawing</b> an eraser stroke"));
+
+                if (!_apply(motion_dt)) {
+                    ret = true;
+                    break;
+                }
+
+                if (cur != last) {
+                    _brush();
+                    g_assert(npoints > 0);
+                    _fitAndSplit(false);
+                }
+
+                ret = true;
+            }
+            if (mode == EraserToolMode::DELETE) {
+                accumulated->reset();
+                Inkscape::Rubberband::get(_desktop)->move(motion_dt);
+            }
+            break;
+        }
+        case GDK_BUTTON_RELEASE: {
+            if (event->button.button != 1) {
+                break;
+            }
+
+            Geom::Point const motion_w(event->button.x, event->button.y);
+            Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+            ungrabCanvasEvents();
+
+            is_drawing = false;
+
+            if (dragging) {
+                dragging = false;
+
+                _apply(motion_dt);
+                _removeTemporarySegments();
+
+                /* Create object */
+                _fitAndSplit(true);
+                _accumulate();
+                _setToAccumulated(); // performs document_done
+
+                /* reset accumulated curve */
+                accumulated->reset();
+
+                _clearCurrent();
+                repr = nullptr;
+
+                message_context->clear();
+                ret = true;
+            }
+
+            if (mode == EraserToolMode::DELETE) {
+                auto r = Inkscape::Rubberband::get(_desktop);
+                if (r->is_started()) {
+                    r->stop();
+                }
+            }
+
+            break;
+        }
+        case GDK_KEY_PRESS:
+            ret = _handleKeypress(&event->key);
+            break;
+
+        case GDK_KEY_RELEASE:
+            switch (get_latin_keyval(&event->key)) {
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                    message_context->clear();
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+        ret = DynamicBase::root_handler(event);
+    }
+    return ret;
+}
+
+/** Analyses and handles a key press event, returns true if processed, false if not. */
+bool EraserTool::_handleKeypress(const GdkEventKey *key)
+{
+    bool ret = false;
+    bool just_ctrl = (key->state & GDK_CONTROL_MASK)                      // Ctrl key is down
+                     && !(key->state & (GDK_MOD1_MASK | GDK_SHIFT_MASK)); // but not Alt or Shift
+
+    bool just_alt = (key->state & GDK_MOD1_MASK)                            // Alt is down
+                    && !(key->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)); // but not Ctrl or Shift
+
+    switch (get_latin_keyval(key)) {
+        case GDK_KEY_Right:
+        case GDK_KEY_KP_Right:
+            if (!just_ctrl) {
+                width += 0.01;
+                if (width > 1.0) {
+                    width = 1.0;
+                }
+                // Alt+X sets focus to this spinbutton as well
+                _desktop->setToolboxAdjustmentValue("eraser-width", width * 100);
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_Left:
+        case GDK_KEY_KP_Left:
+            if (!just_ctrl) {
+                width -= 0.01;
+                if (width < 0.01) {
+                    width = 0.01;
+                }
+                _desktop->setToolboxAdjustmentValue("eraser-width", width * 100);
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_Home:
+        case GDK_KEY_KP_Home:
+            width = 0.01;
+            _desktop->setToolboxAdjustmentValue("eraser-width", width * 100);
+            ret = true;
+            break;
+
+        case GDK_KEY_End:
+        case GDK_KEY_KP_End:
+            width = 1.0;
+            _desktop->setToolboxAdjustmentValue("eraser-width", width * 100);
+            ret = true;
+            break;
+
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (just_alt) {
+                _desktop->setToolboxFocusTo("eraser-width");
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+            if (mode == EraserToolMode::DELETE) {
+                Inkscape::Rubberband::get(_desktop)->stop();
+            }
+            if (is_drawing) {
+                // if drawing, cancel, otherwise pass it up for deselecting
+                _cancel();
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_z:
+        case GDK_KEY_Z:
+            if (just_ctrl && is_drawing) { // Ctrl+Z pressed while drawing
+                _cancel();
+                ret = true;
+            } // if not drawing, pass it up for undo
+            break;
+
+        default:
+            break;
+    }
+    return ret;
+}
+
+void EraserTool::_clearCurrent()
+{
+    // reset bpath
+    currentshape->set_bpath(nullptr);
+
+    // reset curve
+    currentcurve->reset();
+    cal1->reset();
+    cal2->reset();
+
+    // reset points
+    npoints = 0;
+}
+
+void EraserTool::_setToAccumulated()
+{
+    bool work_done = false;
+    SPDocument *document = _desktop->doc();
+
+    if (!accumulated->is_empty()) {
+        if (!repr) {
+            /* Create object */
+            Inkscape::XML::Document *xml_doc = document->getReprDoc();
+            Inkscape::XML::Node *eraser_repr = xml_doc->createElement("svg:path");
+
+            /* Set style */
+            sp_desktop_apply_style_tool(_desktop, eraser_repr, "/tools/eraser", false);
+
+            repr = eraser_repr;
+        }
+        SPObject *top_layer = _desktop->layerManager().currentRoot();
+        SPItem *item_repr = SP_ITEM(top_layer->appendChildRepr(repr));
+        Inkscape::GC::release(repr);
+        item_repr->updateRepr();
+        Geom::PathVector pathv = accumulated->get_pathvector() * _desktop->dt2doc();
+        pathv *= item_repr->i2doc_affine().inverse();
+        repr->setAttribute("d", sp_svg_write_path(pathv));
+        Geom::OptRect eraser_bbox;
+        if (repr) {
+            bool was_selection = false;
+            Inkscape::Selection *selection = _desktop->getSelection();
+            _updateMode();
+            SPItem *acid = SP_ITEM(document->getObjectByRepr(repr));
+            eraser_bbox = acid->documentVisualBounds();
+            std::vector<SPItem *> remaining_items;
+            std::vector<SPItem *> to_work_on;
+            if (selection->isEmpty()) {
+                if (mode == EraserToolMode::CUT || mode == EraserToolMode::CLIP) {
+                    to_work_on = document->getItemsPartiallyInBox(_desktop->dkey, *eraser_bbox,
+                                                                  false, false, false, true);
+                } else {
+                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+                    to_work_on = document->getItemsAtPoints(_desktop->dkey, r->getPoints());
+                }
+                to_work_on.erase(std::remove(to_work_on.begin(), to_work_on.end(), acid), to_work_on.end());
+            } else {
+                if (mode == EraserToolMode::DELETE) {
+                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+                    auto selected_items = selection->items();
+                    std::vector<SPItem *> touched = document->getItemsAtPoints(_desktop->dkey, r->getPoints());
+                    for (auto i : selected_items) {
+                        if (std::find(touched.begin(), touched.end(), i) == touched.end()) {
+                            remaining_items.push_back(i);
+                        } else {
+                            to_work_on.push_back(i);
+                        }
+                    }
+                } else {
+                    to_work_on.insert(to_work_on.end(), selection->items().begin(), selection->items().end());
+                }
+                was_selection = true;
+            }
+
+            if (to_work_on.empty()) {
+                _clearStatusBar();
+            } else {
+                selection->clear();
+                if (mode == EraserToolMode::CUT) {
+                    Error status = ALL_GOOD;
+                    for (auto item : to_work_on) {
+                        Error retval = _cutErase(item, eraser_bbox, remaining_items);
+                        if (retval == ALL_GOOD) {
+                            work_done = true;
+                        } else {
+                            status |= retval;
+                        }
+                    }
+
+                    status &= ~(NOT_IN_BOUNDS | NON_EXISTENT); // Clear flags not handled at the moment
+                    if (status == ALL_GOOD) {
+                        _clearStatusBar();
+                    } else { // Something went wrong during the cut operation
+                        if (status & RASTER_IMAGE) {
+                            _setStatusBarMessage(_("Cannot cut out from a bitmap, use <b>Clip</b> mode "
+                                                   "instead."));
+                        } else if (status & ERROR_GROUP) {
+                            _setStatusBarMessage(_("Cannot cut out from a group, ungroup the objects "
+                                                   "first."));
+                        } else if (status & NO_AREA_PATH) {
+                            _setStatusBarMessage(_("Cannot cut out from a path with zero area, use "
+                                                   "<b>Clip</b> mode instead."));
+                        }
+                    }
+                } else if (mode == EraserToolMode::CLIP) {
+                    if (!nowidth) {
+                        for (auto item : to_work_on) {
+                            _clipErase(item, item_repr->parent, eraser_bbox);
+                        }
+                        if (was_selection) {
+                            remaining_items = to_work_on;
+                        }
+                        work_done = true;
+                    }
+                    _clearStatusBar();
+                } else if (mode == EraserToolMode::DELETE) {
+                    for (auto item : to_work_on) {
+                        item->deleteObject(true);
+                    }
+                    work_done = true;
+                    _clearStatusBar();
+                }
+
+                if (was_selection && !remaining_items.empty()) {
+                    selection->add(remaining_items.begin(), remaining_items.end());
+                }
+            }
+            // Remove the eraser stroke itself:
+            sp_repr_unparent(repr);
+            repr = nullptr;
+        }
+    } else if (repr) {
+        sp_repr_unparent(repr);
+        repr = nullptr;
+    }
+
+    if (work_done) {
+        DocumentUndo::done(document, _("Draw eraser stroke"), INKSCAPE_ICON("draw-eraser"));
+    } else {
+        DocumentUndo::cancel(document);
+    }
+}
+
+/**
+ * @brief Erases from a shape by cutting
+ * @param item - the item to be erased
+ * @param eraser_bbox - bounding box of the eraser stroke
+ * @param survivers - items that survived the erase operation will be added to this vector
+ * @return type of error encountered
+ */
+EraserTool::Error EraserTool::_cutErase(SPItem* item, Geom::OptRect const &eraser_bbox,
+                                        std::vector<SPItem *> &survivers)
+{
+    // If the item cannot be cut, preserve it
+    if (Error error = EraserTool::_uncuttableItemType(item)) {
+        survivers.push_back(item);
+        return error;
+    }
+
+    Geom::OptRect bbox = item->documentVisualBounds();
+    if (!bbox || !bbox->intersects(eraser_bbox)) {
+        survivers.push_back(item);
+        return NOT_IN_BOUNDS;
+    }
+
+    // If the item is a clone, we check if the original is cuttable before unlinking it
+    if (SPUse *use = dynamic_cast<SPUse *>(item)) {
+        int depth = use->cloneDepth();
+        if (depth < 0) {
+            survivers.push_back(item);
+            return NON_EXISTENT;
+        }
+        // We recurse into the chain of uses until we reach the original item
+        SPItem *original_item = item;
+        for (int i = 0; i < depth; ++i) {
+            SPUse *intermediate_clone = dynamic_cast<SPUse *>(original_item);
+            original_item = intermediate_clone->get_original();
+        }
+        if (Error error = EraserTool::_uncuttableItemType(original_item)) {
+            survivers.push_back(item);
+            return error;
+        }
+        item = use->unlink();
+    }
+
+    _booleanErase(item, survivers);
+    return ALL_GOOD;
+}
+
+/** Returns error flags for items that cannot be meaningfully erased in CUT mode */
+EraserTool::Error EraserTool::_uncuttableItemType(SPItem *item)
+{
+    if (!item) {
+        return NON_EXISTENT;
+    } else if (dynamic_cast<SPGroup *>(item)) {
+        return ERROR_GROUP; // TODO: handle groups in the future
+    } else if (dynamic_cast<SPImage *>(item)) {
+        return RASTER_IMAGE;
+    } else if (_isStraightSegment(item)) {
+        return NO_AREA_PATH;
+    } else {
+        return ALL_GOOD;
+    }
+}
+
+/**
+ * @brief Performs a boolean difference or cut operation which implements the CUT mode operation
+ * @param erasee - the item to be erased
+ * @param survivers - items that survived the erase operation will be added to this vector
+ */
+void EraserTool::_booleanErase(SPItem *erasee, std::vector<SPItem *> &survivers) const
+{
+    XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+    XML::Node *duplicate_stroke = repr->duplicate(xml_doc);
+    repr->parent()->appendChild(duplicate_stroke);
+    GC::release(duplicate_stroke); // parent takes over
+    ObjectSet operands(_desktop);
+    operands.set(duplicate_stroke);
+    if (!nowidth) {
+        operands.pathUnion(true, true);
+    }
+    operands.add(erasee);
+    operands.removeLPESRecursive(true);
+
+    _handleStrokeStyle(erasee);
+
+    if (nowidth) {
+        operands.pathCut(true, true);
+    } else {
+        operands.pathDiff(true, true);
+    }
+
+    auto *prefs = Preferences::get();
+    bool break_apart = prefs->getBool("/tools/eraser/break_apart", false);
+    if (!break_apart) {
+        operands.combine(true, true);
+    } else if (!nowidth) {
+        operands.breakApart(true, false, true);
+    }
+    survivers.insert(survivers.end(), operands.items().begin(), operands.items().end());
+}
+
+/** Handles the "evenodd" stroke style */
+void EraserTool::_handleStrokeStyle(SPItem *item) const
+{
+    if (item->style->fill_rule.value == SP_WIND_RULE_EVENODD) {
+        SPCSSAttr *css = sp_repr_css_attr_new();
+        sp_repr_css_set_property(css, "fill-rule", "evenodd");
+        sp_desktop_set_style(_desktop, css);
+        sp_repr_css_attr_unref(css);
+        css = nullptr;
+    }
+}
+
+/** Sets an error message in the status bar */
+void EraserTool::_setStatusBarMessage(char *message)
+{
+    MessageId id = _desktop->messageStack()->flash(WARNING_MESSAGE, message);
+    _our_messages.push_back(id);
+}
+
+/** Clears all of messages sent by us to the status bar */
+void EraserTool::_clearStatusBar()
+{
+    if (!_our_messages.empty()) {
+        auto ms = _desktop->messageStack();
+        for (MessageId id : _our_messages) {
+            ms->cancel(id);
+        }
+        _our_messages.clear();
+    }
+}
+
+/** Clips through an item */
+void EraserTool::_clipErase(SPItem *item, SPObject *parent, Geom::OptRect &eraser_box)
+{
+    Inkscape::ObjectSet w_selection(_desktop);
+    Geom::OptRect bbox = item->documentVisualBounds();
+    Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+    Inkscape::XML::Node *dup = repr->duplicate(xml_doc);
+    repr->parent()->appendChild(dup);
+    Inkscape::GC::release(dup); // parent takes over
+    w_selection.set(dup);
+    w_selection.pathUnion(true);
+    bool delete_old_clip_path = false;
+    if (bbox && bbox->intersects(*eraser_box)) {
+        SPClipPath *clip_path = item->getClipObject();
+        if (clip_path) {
+            std::vector<SPItem *> selected;
+            selected.push_back(SP_ITEM(clip_path->firstChild()));
+            std::vector<Inkscape::XML::Node *> to_select;
+            std::vector<SPItem *> items(selected);
+            sp_item_list_to_curves(items, selected, to_select);
+            Inkscape::XML::Node *clip_data = SP_ITEM(clip_path->firstChild())->getRepr();
+            if (!clip_data && !to_select.empty()) {
+                clip_data = *(to_select.begin());
+            }
+            if (clip_data) {
+                Inkscape::XML::Node *dup_clip = clip_data->duplicate(xml_doc);
+                if (dup_clip) {
+                    SPItem *dup_clip_obj = SP_ITEM(parent->appendChildRepr(dup_clip));
+                    Inkscape::GC::release(dup_clip);
+                    if (dup_clip_obj) {
+                        dup_clip_obj->transform *= item->getRelativeTransform(SP_ITEM(parent));
+                        dup_clip_obj->updateRepr();
+                        delete_old_clip_path = true;
+                        w_selection.raiseToTop(true);
+                        w_selection.add(dup_clip);
+                        w_selection.pathDiff(true, true);
+                    }
+                }
+            }
+        } else {
+            Inkscape::XML::Node *rect_repr = xml_doc->createElement("svg:rect");
+            sp_desktop_apply_style_tool(_desktop, rect_repr, "/tools/eraser", false);
+            SPRect *rect = SP_RECT(parent->appendChildRepr(rect_repr));
+            Inkscape::GC::release(rect_repr);
+            rect->setPosition(bbox->left(), bbox->top(), bbox->width(), bbox->height());
+            rect->transform = SP_ITEM(rect->parent)->i2doc_affine().inverse();
+
+            rect->updateRepr();
+            rect->requestDisplayUpdate(SP_OBJECT_MODIFIED_FLAG);
+            w_selection.raiseToTop(true);
+            w_selection.add(rect);
+            w_selection.pathDiff(true, true);
+        }
+        w_selection.raiseToTop(true);
+        w_selection.add(item);
+        w_selection.setMask(true, false, true);
+        if (delete_old_clip_path) {
+            clip_path->deleteObject(true);
+        }
+    } else {
+        SPItem *erase_clip = w_selection.singleItem();
+        if (erase_clip) {
+            erase_clip->deleteObject(true);
+        }
+    }
+}
+
+/** Detects whether the given path is a straight line segment which encloses no area
+ or consists of several such segments */
+bool EraserTool::_isStraightSegment(SPItem *path)
+{
+    SPPath *as_path = dynamic_cast<SPPath *>(path);
+    if (!as_path) {
+        return false;
+    }
+
+    auto const &curve = as_path->curve();
+    if (!curve) {
+        return false;
+    }
+    auto const &pathvector = curve->get_pathvector();
+
+    // Check if all segments are straight and collinear
+    for (auto const &path : pathvector) {
+        Geom::Point initial_tangent = path.front().unitTangentAt(0.0);
+        for (auto const &segment : path) {
+            if (!segment.isLineSegment()) {
+                return false;
+            } else {
+                Geom::Point dir = segment.unitTangentAt(0.0);
+                if (!Geom::are_near(dir, initial_tangent) && !Geom::are_near(-dir, initial_tangent)) {
+                    return false;
+                }
+            }
+        }
+    }
+    return true;
+}
+
+void EraserTool::_addCap(SPCurve &curve, Geom::Point const &pre, Geom::Point const &from, Geom::Point const &to,
+                         Geom::Point const &post, double rounding)
+{
+    Geom::Point vel = rounding * Geom::rot90(to - from) / M_SQRT2;
+    double mag = Geom::L2(vel);
+
+    Geom::Point v_in = from - pre;
+    double mag_in = Geom::L2(v_in);
+
+    if (mag_in > epsilon) {
+        v_in = mag * v_in / mag_in;
+    } else {
+        v_in = Geom::Point(0, 0);
+    }
+
+    Geom::Point v_out = to - post;
+    double mag_out = Geom::L2(v_out);
+
+    if (mag_out > epsilon) {
+        v_out = mag * v_out / mag_out;
+    } else {
+        v_out = Geom::Point(0, 0);
+    }
+
+    if (Geom::L2(v_in) > epsilon || Geom::L2(v_out) > epsilon) {
+        curve.curveto(from + v_in, to + v_out, to);
+    }
+}
+
+void EraserTool::_accumulate()
+{
+    // construct a crude outline of the eraser's path.
+    // this desperately needs to be rewritten to use the path outliner...
+    if (!cal1->get_segment_count() || !cal2->get_segment_count()) {
+        return;
+    }
+
+    auto rev_cal2 = cal2->create_reverse();
+
+    g_assert(!cal1->first_path()->closed());
+    g_assert(!rev_cal2->first_path()->closed());
+
+    Geom::BezierCurve const *dc_cal1_firstseg  = dynamic_cast<Geom::BezierCurve const *>(cal1->first_segment());
+    Geom::BezierCurve const *rev_cal2_firstseg = dynamic_cast<Geom::BezierCurve const *>(rev_cal2->first_segment());
+    Geom::BezierCurve const *dc_cal1_lastseg   = dynamic_cast<Geom::BezierCurve const *>(cal1->last_segment());
+    Geom::BezierCurve const *rev_cal2_lastseg  = dynamic_cast<Geom::BezierCurve const *>(rev_cal2->last_segment());
+
+    g_assert(dc_cal1_firstseg);
+    g_assert(rev_cal2_firstseg);
+    g_assert(dc_cal1_lastseg);
+    g_assert(rev_cal2_lastseg);
+
+    accumulated->append(*cal1);
+    if (!nowidth) {
+        _addCap(*accumulated,
+                dc_cal1_lastseg->finalPoint() - dc_cal1_lastseg->unitTangentAt(1),
+                dc_cal1_lastseg->finalPoint(),
+                rev_cal2_firstseg->initialPoint(),
+                rev_cal2_firstseg->initialPoint() + rev_cal2_firstseg->unitTangentAt(0),
+                cap_rounding);
+
+        accumulated->append(*rev_cal2, true);
+
+        _addCap(*accumulated,
+                rev_cal2_lastseg->finalPoint() - rev_cal2_lastseg->unitTangentAt(1),
+                rev_cal2_lastseg->finalPoint(),
+                dc_cal1_firstseg->initialPoint(),
+                dc_cal1_firstseg->initialPoint() + dc_cal1_firstseg->unitTangentAt(0),
+                cap_rounding);
+
+        accumulated->closepath();
+    }
+    cal1->reset();
+    cal2->reset();
+}
+
+void EraserTool::_fitAndSplit(bool releasing)
+{
+    double const tolerance_sq = square(_desktop->w2d().descrim() * tolerance);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    nowidth = (prefs->getDouble("/tools/eraser/width", 1) == 0);
+
+#ifdef ERASER_VERBOSE
+    g_print("[F&S:R=%c]", releasing ? 'T' : 'F');
+#endif
+    if (npoints >= SAMPLING_SIZE || npoints <= 0) {
+        return; // just clicked
+    }
+
+    if (npoints == SAMPLING_SIZE - 1 || releasing) {
+        _completeBezier(tolerance_sq, releasing);
+
+#ifdef ERASER_VERBOSE
+        g_print("[%d]Yup\n", npoints);
+#endif
+        if (!releasing) {
+            _fitDrawLastPoint();
+        }
+
+        // Copy last point
+        point1[0] = point1[npoints - 1];
+        point2[0] = point2[npoints - 1];
+        npoints = 1;
+    } else {
+        _drawTemporaryBox();
+    }
+}
+
+void EraserTool::_completeBezier(double tolerance_sq, bool releasing)
+{
+    /* Current eraser */
+    if (cal1->is_empty() || cal2->is_empty()) {
+        /* dc->npoints > 0 */
+        cal1->reset();
+        cal2->reset();
+
+        cal1->moveto(point1[0]);
+        cal2->moveto(point2[0]);
+    }
+#ifdef ERASER_VERBOSE
+    g_print("[F&S:#] npoints:%d, releasing:%s\n", npoints, releasing ? "TRUE" : "FALSE");
+#endif
+
+    unsigned const bezier_size = 4;
+    unsigned const max_beziers = 8;
+    size_t const bezier_max_length = bezier_size * max_beziers;
+
+    Geom::Point b1[bezier_max_length];
+    gint const nb1 = Geom::bezier_fit_cubic_r(b1, point1, npoints, tolerance_sq, max_beziers);
+    g_assert(nb1 * bezier_size <= gint(G_N_ELEMENTS(b1)));
+
+    Geom::Point b2[bezier_max_length];
+    gint const nb2 = Geom::bezier_fit_cubic_r(b2, point2, npoints, tolerance_sq, max_beziers);
+    g_assert(nb2 * bezier_size <= gint(G_N_ELEMENTS(b2)));
+
+    if (nb1 == -1 || nb2 == -1) {
+        _failedBezierFallback(); // TODO: do we ever need this?
+        return;
+    }
+
+    /* Fit and draw and reset state */
+#ifdef ERASER_VERBOSE
+    g_print("nb1:%d nb2:%d\n", nb1, nb2);
+#endif
+
+    /* CanvasShape */
+    if (!releasing) {
+        currentcurve->reset();
+        currentcurve->moveto(b1[0]);
+
+        for (Geom::Point *bp1 = b1; bp1 < b1 + bezier_size * nb1; bp1 += bezier_size) {
+            currentcurve->curveto(bp1[1], bp1[2], bp1[3]);
+        }
+
+        currentcurve->lineto(b2[bezier_size * (nb2 - 1) + 3]);
+
+        for (Geom::Point *bp2 = b2 + bezier_size * (nb2 - 1); bp2 >= b2; bp2 -= bezier_size) {
+            currentcurve->curveto(bp2[2], bp2[1], bp2[0]);
+        }
+
+        // FIXME: segments is always NULL at this point??
+        if (segments.empty()) { // first segment
+            _addCap(*currentcurve, b2[1], b2[0], b1[0], b1[1], cap_rounding);
+        }
+
+        currentcurve->closepath();
+        currentshape->set_bpath(currentcurve.get(), true);
+    }
+
+    /* Current eraser */
+    for (Geom::Point *bp1 = b1; bp1 < b1 + bezier_size * nb1; bp1 += bezier_size) {
+        cal1->curveto(bp1[1], bp1[2], bp1[3]);
+    }
+
+    for (Geom::Point *bp2 = b2; bp2 < b2 + bezier_size * nb2; bp2 += bezier_size) {
+        cal2->curveto(bp2[1], bp2[2], bp2[3]);
+    }
+}
+
+void EraserTool::_failedBezierFallback()
+{
+    /* fixme: ??? */
+#ifdef ERASER_VERBOSE
+    g_print("[_failedBezierFallback] - failed to fit cubic.\n");
+#endif
+    _drawTemporaryBox();
+
+    for (gint i = 1; i < npoints; i++) {
+        cal1->lineto(point1[i]);
+    }
+
+    for (gint i = 1; i < npoints; i++) {
+        cal2->lineto(point2[i]);
+    }
+}
+
+void EraserTool::_fitDrawLastPoint()
+{
+    g_assert(!currentcurve->is_empty());
+
+    guint32 fillColor = sp_desktop_get_color_tool(_desktop, "/tools/eraser", true);
+    double opacity = sp_desktop_get_master_opacity_tool(_desktop, "/tools/eraser");
+    double fillOpacity = sp_desktop_get_opacity_tool(_desktop, "/tools/eraser", true);
+
+    guint fill = (fillColor & 0xffffff00) | SP_COLOR_F_TO_U(opacity * fillOpacity);
+
+    auto cbp = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), currentcurve.get(), true);
+    cbp->set_fill(fill, trace_wind_rule);
+    cbp->set_stroke(0x0);
+
+    /* fixme: Cannot we cascade it to root more clearly? */
+    cbp->connect_event(sigc::bind(sigc::ptr_fun(sp_desktop_root_handler), _desktop));
+    segments.push_back(cbp);
+
+    if (mode == EraserToolMode::DELETE) {
+        cbp->hide();
+        currentshape->hide();
+    }
+}
+
+void EraserTool::_drawTemporaryBox()
+{
+    currentcurve->reset();
+
+    currentcurve->moveto(point1[npoints - 1]);
+
+    for (gint i = npoints - 2; i >= 0; i--) {
+        currentcurve->lineto(point1[i]);
+    }
+
+    for (gint i = 0; i < npoints; i++) {
+        currentcurve->lineto(point2[i]);
+    }
+
+    if (npoints >= 2) {
+        _addCap(*currentcurve,
+                point2[npoints - 2], point2[npoints - 1],
+                point1[npoints - 1], point1[npoints - 2], cap_rounding);
+    }
+
+    currentcurve->closepath();
+    currentshape->set_bpath(currentcurve.get(), true);
+}
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/eraser-tool.h b/src/ui/tools/eraser-tool.h
new file mode 100644
index 0000000..2c9377a
--- /dev/null
+++ b/src/ui/tools/eraser-tool.h
@@ -0,0 +1,132 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef ERASER_TOOL_H_SEEN
+#define ERASER_TOOL_H_SEEN
+
+/*
+ * Handwriting-like drawing mode
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * The original dynadraw code:
+ *   Paul Haeberli <paul@sgi.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2008 Jon A. Cruz
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <2geom/point.h>
+
+#include "message-stack.h"
+#include "style.h"
+#include "ui/tools/dynamic-base.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum class EraserToolMode
+{
+    DELETE,
+    CUT,
+    CLIP
+};
+extern EraserToolMode const DEFAULT_ERASER_MODE;
+
+class EraserTool : public DynamicBase {
+
+private:
+    // non-static data:
+    EraserToolMode mode = DEFAULT_ERASER_MODE;
+    bool nowidth = false;
+    std::vector<MessageId> _our_messages;
+
+    // static data:
+    inline static guint32 const trace_color_rgba   = 0xff0000ff; // RGBA red
+    inline static SPWindRule const trace_wind_rule = SP_WIND_RULE_EVENODD;
+
+    inline static double const tolerance = 0.1;
+
+    inline static double const epsilon       = 0.5e-6;
+    inline static double const epsilon_start = 0.5e-2;
+    inline static double const vel_start     = 1e-5;
+
+    inline static double const drag_default = 1.0;
+    inline static double const drag_min     = 0.0;
+    inline static double const drag_max     = 1.0;
+
+    inline static double const min_pressure     = 0.0;
+    inline static double const max_pressure     = 1.0;
+    inline static double const default_pressure = 1.0;
+
+    inline static double const min_tilt     = -1.0;
+    inline static double const max_tilt     = 1.0;
+    inline static double const default_tilt = 0.0;
+
+public:
+    // public member functions
+    EraserTool(SPDesktop *desktop);
+    ~EraserTool() override;
+    bool root_handler(GdkEvent *event) final;
+
+    using Error = std::uint64_t;
+    inline static Error const ALL_GOOD      = 0x0;
+    inline static Error const NOT_IN_BOUNDS = 0x1 << 0;
+    inline static Error const NON_EXISTENT  = 0x1 << 1;
+    inline static Error const NO_AREA_PATH  = 0x1 << 2;
+    inline static Error const RASTER_IMAGE  = 0x1 << 3;
+    inline static Error const ERROR_GROUP   = 0x1 << 4;
+
+private:
+    // private member functions
+    void _reset(Geom::Point p);
+    void _extinput(GdkEvent *event);
+    bool _apply(Geom::Point p);
+    void _brush();
+    void _cancel();
+    void _clearCurrent();
+    void _setToAccumulated();
+    void _accumulate();
+    void _fitAndSplit(bool releasing);
+    void _drawTemporaryBox();
+    bool _handleKeypress(GdkEventKey const *key);
+    void _completeBezier(double tolerance_sq, bool releasing);
+    void _failedBezierFallback();
+    void _fitDrawLastPoint();
+    void _clipErase(SPItem *item, SPObject *parent, Geom::OptRect &eraser_box);
+    Error _cutErase(SPItem *item, Geom::OptRect const &eraser_bbox, std::vector<SPItem *> &survivers);
+    void _booleanErase(SPItem *erasee, std::vector<SPItem*> &survivers) const;
+    void _handleStrokeStyle(SPItem *item) const;
+    void _updateMode();
+    void _removeTemporarySegments();
+    void _setStatusBarMessage(char *message);
+    void _clearStatusBar();
+
+    static void _generateNormalDist2(double &r1, double &r2);
+    static void _addCap(SPCurve &curve, Geom::Point const &pre, Geom::Point const &from, Geom::Point const &to,
+                        Geom::Point const &post, double rounding);
+    static bool _isStraightSegment(SPItem *path);
+    static Error _uncuttableItemType(SPItem *item);
+};
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+#endif // ERASER_TOOL_H_SEEN
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/flood-tool.cpp b/src/ui/tools/flood-tool.cpp
new file mode 100644
index 0000000..62ef634
--- /dev/null
+++ b/src/ui/tools/flood-tool.cpp
@@ -0,0 +1,1239 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Bucket fill drawing context, works by bitmap filling an area on a rendered version
+ * of the current display and then tracing the result using potrace.
+ */
+/* Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   John Bintz <jcoswell@coswellproductions.org>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
+ * Copyright (C) 2000-2005 authors
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "flood-tool.h"
+
+#include <cmath>
+#include <queue>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include <2geom/pathvector.h>
+
+#include "color.h"
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "layer-manager.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "rubberband.h"
+#include "selection.h"
+#include "page-manager.h"
+
+#include "display/cairo-utils.h"
+#include "display/drawing-context.h"
+#include "display/drawing-image.h"
+#include "display/drawing.h"
+
+#include "include/macros.h"
+
+#include "livarot/Path.h"
+#include "livarot/Shape.h"
+
+#include "object/sp-namedview.h"
+#include "object/sp-path.h"
+#include "object/sp-root.h"
+
+#include "svg/svg.h"
+
+#include "trace/imagemap.h"
+#include "trace/potrace/inkscape-potrace.h"
+
+#include "ui/icon-names.h"
+#include "ui/shape-editor.h"
+#include "ui/widget/canvas.h"  // Canvas area
+
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+using Inkscape::Display::ExtractARGB32;
+using Inkscape::Display::ExtractRGB32;
+using Inkscape::Display::AssembleARGB32;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+// TODO: Replace by C++11 initialization
+// Must match PaintBucketChannels enum
+Glib::ustring ch_init[8] = {
+    _("Visible Colors"),
+    _("Red"),
+    _("Green"),
+    _("Blue"),
+    _("Hue"),
+    _("Saturation"),
+    _("Lightness"),
+    _("Alpha"),
+};
+const std::vector<Glib::ustring> FloodTool::channel_list( ch_init, ch_init+8 );
+
+Glib::ustring gap_init[4] = {
+    NC_("Flood autogap", "None"),
+    NC_("Flood autogap", "Small"),
+    NC_("Flood autogap", "Medium"),
+    NC_("Flood autogap", "Large")
+};
+const std::vector<Glib::ustring> FloodTool::gap_list( gap_init, gap_init+4 );
+
+FloodTool::FloodTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/paintbucket", "flood.svg")
+    , item(nullptr)
+{
+    // TODO: Why does the flood tool use a hardcoded tolerance instead of a pref?
+    this->tolerance = 4;
+
+    this->shape_editor = new ShapeEditor(desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection = desktop->getSelection()->connectChanged(
+    	sigc::mem_fun(this, &FloodTool::selection_changed)
+    );
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/paintbucket/selcue")) {
+        this->enableSelectionCue();
+    }
+}
+
+FloodTool::~FloodTool() {
+    this->sel_changed_connection.disconnect();
+
+    delete shape_editor;
+    shape_editor = nullptr;
+
+    /* fixme: This is necessary because we do not grab */
+    if (this->item) {
+        this->finishItem();
+    }
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ */
+void FloodTool::selection_changed(Inkscape::Selection* selection) {
+    this->shape_editor->unset_item();
+    this->shape_editor->set_item(selection->singleItem());
+}
+
+// Changes from 0.48 -> 0.49 (Cairo)
+// 0.49: Ignores alpha in background
+// 0.48: RGBA, 0.49 ARGB
+// 0.49: premultiplied alpha
+inline static guint32 compose_onto(guint32 px, guint32 bg)
+{
+    guint ap = 0, rp = 0, gp = 0, bp = 0;
+    guint rb = 0, gb = 0, bb = 0;
+    ExtractARGB32(px, ap, rp, gp, bp);
+    ExtractRGB32(bg, rb, gb, bb);
+
+    // guint ao = 255*255 - (255-ap)*(255-bp);  ao = (ao + 127) / 255;
+    // guint ao = (255-ap)*ab + 255*ap;             ao = (ao + 127) / 255;
+    guint ao = 255; // Cairo version doesn't allow background to have alpha != 1.
+    guint ro = (255-ap)*rb + 255*rp;             ro = (ro + 127) / 255;
+    guint go = (255-ap)*gb + 255*gp;             go = (go + 127) / 255;
+    guint bo = (255-ap)*bb + 255*bp;             bo = (bo + 127) / 255;
+
+    guint pxout = AssembleARGB32(ao, ro, go, bo);
+    return pxout;
+}
+
+/**
+ * Get the pointer to a pixel in a pixel buffer.
+ * @param px The pixel buffer.
+ * @param x The X coordinate.
+ * @param y The Y coordinate.
+ * @param stride The rowstride of the pixel buffer.
+ */
+inline guint32 get_pixel(guchar *px, int x, int y, int stride) {
+    return *reinterpret_cast<guint32*>(px + y * stride + x * 4);
+}
+
+inline unsigned char * get_trace_pixel(guchar *trace_px, int x, int y, int width) {
+    return trace_px + (x + y * width);
+}
+
+/**
+ * \brief Check whether two unsigned integers are close to each other
+ *
+ * \param[in] a The 1st unsigned int
+ * \param[in] b The 2nd unsigned int
+ * \param[in] d The threshold for comparison
+ *
+ * \return true if |a-b| <= d; false otherwise
+ */
+static bool compare_guint32(guint32 const a, guint32 const b, guint32 const d)
+{
+    const int difference = std::abs(static_cast<int>(a) - static_cast<int>(b));
+    return difference <= d;
+}
+
+/**
+ * Compare a pixel in a pixel buffer with another pixel to determine if a point should be included in the fill operation.
+ * @param check The pixel in the pixel buffer to check.
+ * @param orig The original selected pixel to use as the fill target color.
+ * @param merged_orig_pixel The original pixel merged with the background.
+ * @param dtc The desktop background color.
+ * @param threshold The fill threshold.
+ * @param method The fill method to use as defined in PaintBucketChannels.
+ */
+static bool compare_pixels(guint32 check, guint32 orig, guint32 merged_orig_pixel, guint32 dtc, int threshold, PaintBucketChannels method)
+{
+    float hsl_check[3] = {0,0,0}, hsl_orig[3] = {0,0,0};
+
+    guint32 ac = 0, rc = 0, gc = 0, bc = 0;
+    ExtractARGB32(check, ac, rc, gc, bc);
+
+    guint32 ao = 0, ro = 0, go = 0, bo = 0;
+    ExtractARGB32(orig, ao, ro, go, bo);
+
+    guint32 ad = 0, rd = 0, gd = 0, bd = 0;
+    ExtractARGB32(dtc, ad, rd, gd, bd);
+
+    guint32 amop = 0, rmop = 0, gmop = 0, bmop = 0;
+    ExtractARGB32(merged_orig_pixel, amop, rmop, gmop, bmop);
+
+    if ((method == FLOOD_CHANNELS_H) ||
+        (method == FLOOD_CHANNELS_S) ||
+        (method == FLOOD_CHANNELS_L)) {
+        double dac = ac;
+        double dao = ao;
+        SPColor::rgb_to_hsl_floatv(hsl_check, rc / dac, gc / dac, bc / dac);
+        SPColor::rgb_to_hsl_floatv(hsl_orig, ro / dao, go / dao, bo / dao);
+    }
+    
+    switch (method) {
+        case FLOOD_CHANNELS_ALPHA:
+            return compare_guint32(ac, ao, threshold);
+        case FLOOD_CHANNELS_R:
+            return compare_guint32(ac ? unpremul_alpha(rc, ac) : 0,
+                                   ao ? unpremul_alpha(ro, ao) : 0,
+                                   threshold);
+        case FLOOD_CHANNELS_G:
+            return compare_guint32(ac ? unpremul_alpha(gc, ac) : 0,
+                                   ao ? unpremul_alpha(go, ao) : 0,
+                                   threshold);
+        case FLOOD_CHANNELS_B:
+            return compare_guint32(ac ? unpremul_alpha(bc, ac) : 0,
+                                   ao ? unpremul_alpha(bo, ao) : 0,
+                                   threshold);
+        case FLOOD_CHANNELS_RGB:
+            {
+                guint32 amc, rmc, bmc, gmc;
+                //amc = 255*255 - (255-ac)*(255-ad); amc = (amc + 127) / 255;
+                //amc = (255-ac)*ad + 255*ac; amc = (amc + 127) / 255;
+                amc = 255; // Why are we looking at desktop? Cairo version ignores destop alpha
+                rmc = (255-ac)*rd + 255*rc; rmc = (rmc + 127) / 255;
+                gmc = (255-ac)*gd + 255*gc; gmc = (gmc + 127) / 255;
+                bmc = (255-ac)*bd + 255*bc; bmc = (bmc + 127) / 255;
+
+                int diff = 0; // The total difference between each of the 3 color components
+                diff += std::abs(static_cast<int>(amc ? unpremul_alpha(rmc, amc) : 0) - static_cast<int>(amop ? unpremul_alpha(rmop, amop) : 0));
+                diff += std::abs(static_cast<int>(amc ? unpremul_alpha(gmc, amc) : 0) - static_cast<int>(amop ? unpremul_alpha(gmop, amop) : 0));
+                diff += std::abs(static_cast<int>(amc ? unpremul_alpha(bmc, amc) : 0) - static_cast<int>(amop ? unpremul_alpha(bmop, amop) : 0));
+                return ((diff / 3) <= ((threshold * 3) / 4));
+            }
+        case FLOOD_CHANNELS_H:
+            return ((int)(fabs(hsl_check[0] - hsl_orig[0]) * 100.0) <= threshold);
+        case FLOOD_CHANNELS_S:
+            return ((int)(fabs(hsl_check[1] - hsl_orig[1]) * 100.0) <= threshold);
+        case FLOOD_CHANNELS_L:
+            return ((int)(fabs(hsl_check[2] - hsl_orig[2]) * 100.0) <= threshold);
+    }
+    
+    return false;
+}
+
+enum {
+  PIXEL_CHECKED = 1,
+  PIXEL_QUEUED  = 2,
+  PIXEL_PAINTABLE = 4,
+  PIXEL_NOT_PAINTABLE = 8,
+  PIXEL_COLORED = 16
+};
+
+static inline bool is_pixel_checked(unsigned char *t) { return (*t & PIXEL_CHECKED) == PIXEL_CHECKED; }
+static inline bool is_pixel_queued(unsigned char *t) { return (*t & PIXEL_QUEUED) == PIXEL_QUEUED; }
+static inline bool is_pixel_paintability_checked(unsigned char *t) {
+  return !((*t & PIXEL_PAINTABLE) == 0) && ((*t & PIXEL_NOT_PAINTABLE) == 0);
+}
+static inline bool is_pixel_paintable(unsigned char *t) { return (*t & PIXEL_PAINTABLE) == PIXEL_PAINTABLE; }
+static inline bool is_pixel_colored(unsigned char *t) { return (*t & PIXEL_COLORED) == PIXEL_COLORED; }
+
+static inline void mark_pixel_checked(unsigned char *t) { *t |= PIXEL_CHECKED; }
+static inline void mark_pixel_queued(unsigned char *t) { *t |= PIXEL_QUEUED; }
+static inline void mark_pixel_paintable(unsigned char *t) { *t |= PIXEL_PAINTABLE; *t ^= PIXEL_NOT_PAINTABLE; }
+static inline void mark_pixel_not_paintable(unsigned char *t) { *t |= PIXEL_NOT_PAINTABLE; *t ^= PIXEL_PAINTABLE; }
+static inline void mark_pixel_colored(unsigned char *t) { *t |= PIXEL_COLORED; }
+
+static inline void clear_pixel_paintability(unsigned char *t) { *t ^= PIXEL_PAINTABLE; *t ^= PIXEL_NOT_PAINTABLE; }
+
+struct bitmap_coords_info {
+    bool is_left;
+    unsigned int x;
+    unsigned int y;
+    int y_limit;
+    unsigned int width;
+    unsigned int height;
+    unsigned int stride;
+    unsigned int threshold;
+    unsigned int radius;
+    PaintBucketChannels method;
+    guint32 dtc;
+    guint32 merged_orig_pixel;
+    Geom::Rect bbox;
+    Geom::Rect screen;
+    unsigned int max_queue_size;
+    unsigned int current_step;
+};
+
+/**
+ * Check if a pixel can be included in the fill.
+ * @param px The rendered pixel buffer to check.
+ * @param trace_t The pixel in the trace pixel buffer to check or mark.
+ * @param x The X coordinate.
+ * @param y The y coordinate.
+ * @param orig_color The original selected pixel to use as the fill target color.
+ * @param bci The bitmap_coords_info structure.
+ */
+inline static bool check_if_pixel_is_paintable(guchar *px, unsigned char *trace_t, int x, int y, guint32 orig_color, bitmap_coords_info bci) {
+    if (is_pixel_paintability_checked(trace_t)) {
+        return is_pixel_paintable(trace_t);
+    } else {
+        guint32 pixel = get_pixel(px, x, y, bci.stride);
+        if (compare_pixels(pixel, orig_color, bci.merged_orig_pixel, bci.dtc, bci.threshold, bci.method)) {
+            mark_pixel_paintable(trace_t);
+            return true;
+        } else {
+            mark_pixel_not_paintable(trace_t);
+            return false;
+        }
+    }
+}
+
+/**
+ * Perform the bitmap-to-vector tracing and place the traced path onto the document.
+ * @param px The trace pixel buffer to trace to SVG.
+ * @param desktop The desktop on which to place the final SVG path.
+ * @param transform The transform to apply to the final SVG path.
+ * @param union_with_selection If true, merge the final SVG path with the current selection.
+ */
+static void do_trace(bitmap_coords_info bci, guchar *trace_px, SPDesktop *desktop, Geom::Affine transform, unsigned int min_x, unsigned int max_x, unsigned int min_y, unsigned int max_y, bool union_with_selection) {
+    SPDocument *document = desktop->getDocument();
+
+    unsigned char *trace_t;
+
+    GrayMap *gray_map = GrayMapCreate((max_x - min_x + 1), (max_y - min_y + 1));
+    if (!gray_map) {
+        desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("Failed mid-operation, no objects created."));
+        return;
+    }
+    unsigned int gray_map_y = 0;
+    for (unsigned int y = min_y; y <= max_y; y++) {
+        unsigned long *gray_map_t = gray_map->rows[gray_map_y];
+
+        trace_t = get_trace_pixel(trace_px, min_x, y, bci.width);
+        for (unsigned int x = min_x; x <= max_x; x++) {
+            *gray_map_t = is_pixel_colored(trace_t) ? GRAYMAP_BLACK : GRAYMAP_WHITE;
+            gray_map_t++;
+            trace_t++;
+        }
+        gray_map_y++;
+    }
+
+    Inkscape::Trace::Potrace::PotraceTracingEngine pte;
+    pte.keepGoing = 1;
+    std::vector<Inkscape::Trace::TracingEngineResult> results = pte.traceGrayMap(gray_map);
+    gray_map->destroy(gray_map);
+
+    //XML Tree being used here directly while it shouldn't be...."
+    Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
+
+    long totalNodeCount = 0L;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    double offset = prefs->getDouble("/tools/paintbucket/offset", 0.0);
+
+    for (auto result : results) {
+        totalNodeCount += result.getNodeCount();
+
+        Inkscape::XML::Node *pathRepr = xml_doc->createElement("svg:path");
+        /* Set style */
+        sp_desktop_apply_style_tool (desktop, pathRepr, "/tools/paintbucket", false);
+
+        Geom::PathVector pathv = sp_svg_read_pathv(result.getPathData().c_str());
+        Path *path = new Path;
+        path->LoadPathVector(pathv);
+
+        if (offset != 0) {
+        
+            Shape *path_shape = new Shape();
+        
+            path->ConvertWithBackData(0.03);
+            path->Fill(path_shape, 0);
+            delete path;
+        
+            Shape *expanded_path_shape = new Shape();
+        
+            expanded_path_shape->ConvertToShape(path_shape, fill_nonZero);
+            path_shape->MakeOffset(expanded_path_shape, offset * desktop->current_zoom(), join_round, 4);
+            expanded_path_shape->ConvertToShape(path_shape, fill_positive);
+
+            Path *expanded_path = new Path();
+        
+            expanded_path->Reset();
+            expanded_path_shape->ConvertToForme(expanded_path);
+            expanded_path->ConvertEvenLines(1.0);
+            expanded_path->Simplify(1.0);
+        
+            delete path_shape;
+            delete expanded_path_shape;
+        
+            gchar *str = expanded_path->svg_dump_path();
+            if (str && *str) {
+                pathRepr->setAttribute("d", str);
+                g_free(str);
+            } else {
+                desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Too much inset</b>, the result is empty."));
+                Inkscape::GC::release(pathRepr);
+                g_free(str);
+                return;
+            }
+
+            delete expanded_path;
+
+        } else {
+            gchar *str = path->svg_dump_path();
+            delete path;
+            pathRepr->setAttribute("d", str);
+            g_free(str);
+        }
+
+        auto layer = desktop->layerManager().currentLayer();
+        layer->addChild(pathRepr, nullptr);
+
+        SPObject *reprobj = document->getObjectByRepr(pathRepr);
+        if (reprobj) {
+            SP_ITEM(reprobj)->doWriteTransform(transform);
+            
+            // premultiply the item transform by the accumulated parent transform in the paste layer
+            Geom::Affine local (layer->i2doc_affine());
+            if (!local.isIdentity()) {
+                gchar const *t_str = pathRepr->attribute("transform");
+                Geom::Affine item_t (Geom::identity());
+                if (t_str)
+                    sp_svg_transform_read(t_str, &item_t);
+                item_t *= local.inverse();
+                // (we're dealing with unattached repr, so we write to its attr instead of using sp_item_set_transform)
+                pathRepr->setAttributeOrRemoveIfEmpty("transform", sp_svg_transform_write(item_t));
+            }
+
+            Inkscape::Selection *selection = desktop->getSelection();
+
+            pathRepr->setPosition(-1);
+
+            if (union_with_selection) {
+                desktop->messageStack()->flashF( Inkscape::WARNING_MESSAGE,
+                    ngettext("Area filled, path with <b>%d</b> node created and unioned with selection.","Area filled, path with <b>%d</b> nodes created and unioned with selection.",
+                    SP_PATH(reprobj)->nodesInPath()), SP_PATH(reprobj)->nodesInPath() );
+                selection->add(reprobj);
+                selection->pathUnion(true);
+            } else {
+                desktop->messageStack()->flashF( Inkscape::WARNING_MESSAGE,
+                    ngettext("Area filled, path with <b>%d</b> node created.","Area filled, path with <b>%d</b> nodes created.",
+                    SP_PATH(reprobj)->nodesInPath()), SP_PATH(reprobj)->nodesInPath() );
+                selection->set(reprobj);
+            }
+
+        }
+
+        Inkscape::GC::release(pathRepr);
+
+    }
+}
+
+/**
+ * The possible return states of perform_bitmap_scanline_check().
+ */
+enum ScanlineCheckResult {
+    SCANLINE_CHECK_OK,
+    SCANLINE_CHECK_ABORTED,
+    SCANLINE_CHECK_BOUNDARY
+};
+
+/**
+ * Determine if the provided coordinates are within the pixel buffer limits.
+ * @param x The X coordinate.
+ * @param y The Y coordinate.
+ * @param bci The bitmap_coords_info structure.
+ */
+inline static bool coords_in_range(unsigned int x, unsigned int y, bitmap_coords_info bci) {
+    return (x < bci.width) &&
+           (y < bci.height);
+}
+
+#define PAINT_DIRECTION_LEFT 1
+#define PAINT_DIRECTION_RIGHT 2
+#define PAINT_DIRECTION_UP 4
+#define PAINT_DIRECTION_DOWN 8
+#define PAINT_DIRECTION_ALL 15
+
+/**
+ * Paint a pixel or a square (if autogap is enabled) on the trace pixel buffer.
+ * @param px The rendered pixel buffer to check.
+ * @param trace_px The trace pixel buffer.
+ * @param orig_color The original selected pixel to use as the fill target color.
+ * @param bci The bitmap_coords_info structure.
+ * @param original_point_trace_t The original pixel in the trace pixel buffer to check.
+ */
+inline static unsigned int paint_pixel(guchar *px, guchar *trace_px, guint32 orig_color, bitmap_coords_info bci, unsigned char *original_point_trace_t) {
+    if (bci.radius == 0) {
+        mark_pixel_colored(original_point_trace_t); 
+        return PAINT_DIRECTION_ALL;
+    } else {
+        unsigned char *trace_t;
+  
+        bool can_paint_up = true;
+        bool can_paint_down = true;
+        bool can_paint_left = true;
+        bool can_paint_right = true;
+      
+        for (unsigned int ty = bci.y - bci.radius; ty <= bci.y + bci.radius; ty++) {
+            for (unsigned int tx = bci.x - bci.radius; tx <= bci.x + bci.radius; tx++) {
+                if (coords_in_range(tx, ty, bci)) {
+                    trace_t = get_trace_pixel(trace_px, tx, ty, bci.width);
+                    if (!is_pixel_colored(trace_t)) {
+                        if (check_if_pixel_is_paintable(px, trace_t, tx, ty, orig_color, bci)) {
+                            mark_pixel_colored(trace_t); 
+                        } else {
+                            if (tx < bci.x) { can_paint_left = false; }
+                            if (tx > bci.x) { can_paint_right = false; }
+                            if (ty < bci.y) { can_paint_up = false; }
+                            if (ty > bci.y) { can_paint_down = false; }
+                        }
+                    }
+                }
+            }
+        }
+    
+        unsigned int paint_directions = 0;
+        if (can_paint_left) { paint_directions += PAINT_DIRECTION_LEFT; }
+        if (can_paint_right) { paint_directions += PAINT_DIRECTION_RIGHT; }
+        if (can_paint_up) { paint_directions += PAINT_DIRECTION_UP; }
+        if (can_paint_down) { paint_directions += PAINT_DIRECTION_DOWN; }
+        
+        return paint_directions;
+    }
+}
+
+/**
+ * Push a point to be checked onto the bottom of the rendered pixel buffer check queue.
+ * @param fill_queue The fill queue to add the point to.
+ * @param max_queue_size The maximum size of the fill queue.
+ * @param trace_t The trace pixel buffer pixel.
+ * @param x The X coordinate.
+ * @param y The Y coordinate.
+ */
+static void push_point_onto_queue(std::deque<Geom::Point> *fill_queue, unsigned int max_queue_size, unsigned char *trace_t, unsigned int x, unsigned int y) {
+    if (!is_pixel_queued(trace_t)) {
+        if ((fill_queue->size() < max_queue_size)) {
+            fill_queue->push_back(Geom::Point(x, y));
+            mark_pixel_queued(trace_t);
+        }
+    }
+}
+
+/**
+ * Shift a point to be checked onto the top of the rendered pixel buffer check queue.
+ * @param fill_queue The fill queue to add the point to.
+ * @param max_queue_size The maximum size of the fill queue.
+ * @param trace_t The trace pixel buffer pixel.
+ * @param x The X coordinate.
+ * @param y The Y coordinate.
+ */
+static void shift_point_onto_queue(std::deque<Geom::Point> *fill_queue, unsigned int max_queue_size, unsigned char *trace_t, unsigned int x, unsigned int y) {
+    if (!is_pixel_queued(trace_t)) {
+        if ((fill_queue->size() < max_queue_size)) {
+            fill_queue->push_front(Geom::Point(x, y));
+            mark_pixel_queued(trace_t);
+        }
+    }
+}
+
+/**
+ * Scan a row in the rendered pixel buffer and add points to the fill queue as necessary.
+ * @param fill_queue The fill queue to add the point to.
+ * @param px The rendered pixel buffer.
+ * @param trace_px The trace pixel buffer.
+ * @param orig_color The original selected pixel to use as the fill target color.
+ * @param bci The bitmap_coords_info structure.
+ */
+static ScanlineCheckResult perform_bitmap_scanline_check(std::deque<Geom::Point> *fill_queue, guchar *px, guchar *trace_px, guint32 orig_color, bitmap_coords_info bci, unsigned int *min_x, unsigned int *max_x) {
+    bool aborted = false;
+    bool reached_screen_boundary = false;
+    bool ok;
+
+    bool keep_tracing;
+    bool initial_paint = true;
+
+    unsigned char *current_trace_t = get_trace_pixel(trace_px, bci.x, bci.y, bci.width);
+    unsigned int paint_directions;
+
+    bool currently_painting_top = false;
+    bool currently_painting_bottom = false;
+
+    unsigned int top_ty = (bci.y > 0) ? bci.y - 1 : 0;
+    unsigned int bottom_ty = bci.y + 1;
+
+    bool can_paint_top = (top_ty > 0);
+    bool can_paint_bottom = (bottom_ty < bci.height);
+
+    Geom::Point front_of_queue = fill_queue->empty() ? Geom::Point() : fill_queue->front();
+
+    do {
+        ok = false;
+        if (bci.is_left) {
+            keep_tracing = (bci.x != 0);
+        } else {
+            keep_tracing = (bci.x < bci.width);
+        }
+
+        *min_x = MIN(*min_x, bci.x);
+        *max_x = MAX(*max_x, bci.x);
+
+        if (keep_tracing) {
+            if (check_if_pixel_is_paintable(px, current_trace_t, bci.x, bci.y, orig_color, bci)) {
+                paint_directions = paint_pixel(px, trace_px, orig_color, bci, current_trace_t);
+                if (bci.radius == 0) {
+                    mark_pixel_checked(current_trace_t);
+                    if ((!fill_queue->empty()) &&
+                        (front_of_queue[Geom::X] == bci.x) &&
+                        (front_of_queue[Geom::Y] == bci.y)) {
+                        fill_queue->pop_front();
+                        front_of_queue = fill_queue->empty() ? Geom::Point() : fill_queue->front();
+                    }
+                }
+
+                if (can_paint_top) {
+                    if (paint_directions & PAINT_DIRECTION_UP) { 
+                        unsigned char *trace_t = current_trace_t - bci.width;
+                        if (!is_pixel_queued(trace_t)) {
+                            bool ok_to_paint = check_if_pixel_is_paintable(px, trace_t, bci.x, top_ty, orig_color, bci);
+
+                            if (initial_paint) { currently_painting_top = !ok_to_paint; }
+
+                            if (ok_to_paint && (!currently_painting_top)) {
+                                currently_painting_top = true;
+                                push_point_onto_queue(fill_queue, bci.max_queue_size, trace_t, bci.x, top_ty);
+                            }
+                            if ((!ok_to_paint) && currently_painting_top) {
+                                currently_painting_top = false;
+                            }
+                        }
+                    }
+                }
+
+                if (can_paint_bottom) {
+                    if (paint_directions & PAINT_DIRECTION_DOWN) { 
+                        unsigned char *trace_t = current_trace_t + bci.width;
+                        if (!is_pixel_queued(trace_t)) {
+                            bool ok_to_paint = check_if_pixel_is_paintable(px, trace_t, bci.x, bottom_ty, orig_color, bci);
+
+                            if (initial_paint) { currently_painting_bottom = !ok_to_paint; }
+
+                            if (ok_to_paint && (!currently_painting_bottom)) {
+                                currently_painting_bottom = true;
+                                push_point_onto_queue(fill_queue, bci.max_queue_size, trace_t, bci.x, bottom_ty);
+                            }
+                            if ((!ok_to_paint) && currently_painting_bottom) {
+                                currently_painting_bottom = false;
+                            }
+                        }
+                    }
+                }
+
+                if (bci.is_left) {
+                    if (paint_directions & PAINT_DIRECTION_LEFT) {
+                        bci.x--; current_trace_t--;
+                        ok = true;
+                    }
+                } else {
+                    if (paint_directions & PAINT_DIRECTION_RIGHT) {
+                        bci.x++; current_trace_t++;
+                        ok = true;
+                    }
+                }
+
+                initial_paint = false;
+            }
+        } else {
+            if (bci.bbox.min()[Geom::X] > bci.screen.min()[Geom::X]) {
+                aborted = true; break;
+            } else {
+                reached_screen_boundary = true;
+            }
+        }
+    } while (ok);
+
+    if (aborted) { return SCANLINE_CHECK_ABORTED; }
+    if (reached_screen_boundary) { return SCANLINE_CHECK_BOUNDARY; }
+    return SCANLINE_CHECK_OK;
+}
+
+/**
+ * Sort the rendered pixel buffer check queue vertically.
+ */
+static bool sort_fill_queue_vertical(Geom::Point a, Geom::Point b) {
+    return a[Geom::Y] > b[Geom::Y];
+}
+
+/**
+ * Sort the rendered pixel buffer check queue horizontally.
+ */
+static bool sort_fill_queue_horizontal(Geom::Point a, Geom::Point b) {
+    return a[Geom::X] > b[Geom::X];
+}
+
+/**
+ * Perform a flood fill operation.
+ * @param desktop The desktop of this tool's event context.
+ * @param event The details of this event.
+ * @param union_with_selection If true, union the new fill with the current selection.
+ * @param is_point_fill If false, use the Rubberband "touch selection" to get the initial points for the fill.
+ * @param is_touch_fill If true, use only the initial contact point in the Rubberband "touch selection" as the fill target color.
+ */
+static void sp_flood_do_flood_fill(SPDesktop *desktop, GdkEvent *event,
+                                   bool union_with_selection, bool is_point_fill, bool is_touch_fill) {
+
+    SPDocument *document = desktop->getDocument();
+
+    document->ensureUpToDate();
+    
+    Geom::OptRect bbox = document->getRoot()->visualBounds();
+
+    if (!bbox) {
+        desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
+        return;
+    }
+    
+    // Render 160% of the physical display to the render pixel buffer, so that available
+    // fill areas off the screen can be included in the fill.
+    double padding = 1.6;
+
+    // image space is world space with an offset
+    Geom::Rect const screen_world = desktop->getCanvas()->get_area_world();
+    Geom::Rect const screen = screen_world * desktop->w2d();
+    Geom::IntPoint const img_dims = (screen_world.dimensions() * padding).ceil();
+    Geom::Affine const world2img = Geom::Translate((img_dims - screen_world.dimensions()) / 2.0 - screen_world.min());
+    Geom::Affine const doc2img = desktop->doc2dt() * desktop->d2w() * world2img;
+
+    auto const width = img_dims.x();
+    auto const height = img_dims.y();
+
+    int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, width);
+    guchar *px = g_new(guchar, stride * height);
+    guint32 bgcolor, dtc;
+
+    // Draw image into data block px
+    { // this block limits the lifetime of Drawing and DrawingContext
+        /* Create DrawingItems and set transform */
+        unsigned dkey = SPItem::display_key_new(1);
+        Inkscape::Drawing drawing;
+        Inkscape::DrawingItem *root = document->getRoot()->invoke_show( drawing, dkey, SP_ITEM_SHOW_DISPLAY);
+        root->setTransform(doc2img);
+        drawing.setRoot(root);
+
+        Geom::IntRect final_bbox = Geom::IntRect::from_xywh(0, 0, width, height);
+        drawing.update(final_bbox);
+
+        cairo_surface_t *s = cairo_image_surface_create_for_data(
+            px, CAIRO_FORMAT_ARGB32, width, height, stride);
+        Inkscape::DrawingContext dc(s, Geom::Point(0,0));
+        // cairo_translate not necessary here - surface origin is at 0,0
+
+        bgcolor = document->getPageManager().background_color;
+
+        // bgcolor is 0xrrggbbaa, we need 0xaarrggbb
+        dtc = (bgcolor >> 8) | (bgcolor << 24);
+
+        dc.setSource(bgcolor);
+        dc.setOperator(CAIRO_OPERATOR_SOURCE);
+        dc.paint();
+        dc.setOperator(CAIRO_OPERATOR_OVER);
+
+        drawing.render(dc, final_bbox);
+
+        //cairo_surface_write_to_png( s, "cairo.png" );
+
+        cairo_surface_flush(s);
+        cairo_surface_destroy(s);
+        
+        // Hide items
+        document->getRoot()->invoke_hide(dkey);
+    }
+
+    // {
+    //     // Dump data to png
+    //     cairo_surface_t *s = cairo_image_surface_create_for_data(
+    //         px, CAIRO_FORMAT_ARGB32, width, height, stride);
+    //     cairo_surface_write_to_png( s, "cairo2.png" );
+    //     std::cout << "  Wrote cairo2.png" << std::endl;
+    // }
+
+    guchar *trace_px = g_new(guchar, width * height);
+    memset(trace_px, 0x00, width * height);
+    
+    std::deque<Geom::Point> fill_queue;
+    std::queue<Geom::Point> color_queue;
+    
+    std::vector<Geom::Point> fill_points;
+    
+    bool aborted = false;
+    int y_limit = height - 1;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    PaintBucketChannels method = (PaintBucketChannels) prefs->getInt("/tools/paintbucket/channels", 0);
+    int threshold = prefs->getIntLimited("/tools/paintbucket/threshold", 1, 0, 100);
+
+    switch(method) {
+        case FLOOD_CHANNELS_ALPHA:
+        case FLOOD_CHANNELS_RGB:
+        case FLOOD_CHANNELS_R:
+        case FLOOD_CHANNELS_G:
+        case FLOOD_CHANNELS_B:
+            threshold = (255 * threshold) / 100;
+            break;
+        case FLOOD_CHANNELS_H:
+        case FLOOD_CHANNELS_S:
+        case FLOOD_CHANNELS_L:
+            break;
+    }
+
+    bitmap_coords_info bci;
+    
+    bci.y_limit = y_limit;
+    bci.width = width;
+    bci.height = height;
+    bci.stride = stride;
+    bci.threshold = threshold;
+    bci.method = method;
+    bci.bbox = *bbox;
+    bci.screen = screen;
+    bci.dtc = dtc;
+    bci.radius = prefs->getIntLimited("/tools/paintbucket/autogap", 0, 0, 3);
+    bci.max_queue_size = (width * height) / 4;
+    bci.current_step = 0;
+
+    if (is_point_fill) {
+        fill_points.emplace_back(event->button.x, event->button.y);
+    } else {
+        Inkscape::Rubberband *r = Inkscape::Rubberband::get(desktop);
+        fill_points = r->getPoints();
+    }
+
+    auto const img_max_indices = Geom::Rect::from_xywh(0, 0, width - 1, height - 1);
+
+    for (unsigned int i = 0; i < fill_points.size(); i++) {
+        Geom::Point pw = fill_points[i] * world2img;
+
+        pw = img_max_indices.clamp(pw);
+
+        if (is_touch_fill) {
+            if (i == 0) {
+                color_queue.push(pw);
+            } else {
+                unsigned char *trace_t = get_trace_pixel(trace_px, (int)pw[Geom::X], (int)pw[Geom::Y], width);
+                push_point_onto_queue(&fill_queue, bci.max_queue_size, trace_t, (int)pw[Geom::X], (int)pw[Geom::Y]);
+            }
+        } else {
+            color_queue.push(pw);
+        }
+    }
+
+    bool reached_screen_boundary = false;
+
+    bool first_run = true;
+
+    unsigned long sort_size_threshold = 5;
+
+    unsigned int min_y = height;
+    unsigned int max_y = 0;
+    unsigned int min_x = width;
+    unsigned int max_x = 0;
+
+    while (!color_queue.empty() && !aborted) {
+        Geom::Point color_point = color_queue.front();
+        color_queue.pop();
+
+        int cx = (int)color_point[Geom::X];
+        int cy = (int)color_point[Geom::Y];
+
+        guint32 orig_color = get_pixel(px, cx, cy, stride);
+        bci.merged_orig_pixel = compose_onto(orig_color, dtc);
+
+        unsigned char *trace_t = get_trace_pixel(trace_px, cx, cy, width);
+        if (!is_pixel_checked(trace_t) && !is_pixel_colored(trace_t)) {
+            if (check_if_pixel_is_paintable(px, trace_px, cx, cy, orig_color, bci)) {
+                shift_point_onto_queue(&fill_queue, bci.max_queue_size, trace_t, cx, cy);
+
+                if (!first_run) {
+                    for (unsigned int y = 0; y < height; y++) {
+                        trace_t = get_trace_pixel(trace_px, 0, y, width);
+                        for (unsigned int x = 0; x < width; x++) {
+                            clear_pixel_paintability(trace_t);
+                            trace_t++;
+                        }
+                    }
+                }
+                first_run = false;
+            }
+        }
+
+        unsigned long old_fill_queue_size = fill_queue.size();
+
+        while (!fill_queue.empty() && !aborted) {
+            Geom::Point cp = fill_queue.front();
+
+            if (bci.radius == 0) {
+                unsigned long new_fill_queue_size = fill_queue.size();
+
+                /*
+                 * To reduce the number of points in the fill queue, periodically
+                 * resort all of the points in the queue so that scanline checks
+                 * can complete more quickly.  A point cannot be checked twice
+                 * in a normal scanline checks, so forcing scanline checks to start
+                 * from one corner of the rendered area as often as possible
+                 * will reduce the number of points that need to be checked and queued.
+                 */
+                if (new_fill_queue_size > sort_size_threshold) {
+                    if (new_fill_queue_size > old_fill_queue_size) {
+                        std::sort(fill_queue.begin(), fill_queue.end(), sort_fill_queue_vertical);
+
+                        std::deque<Geom::Point>::iterator start_sort = fill_queue.begin();
+                        std::deque<Geom::Point>::iterator end_sort = fill_queue.begin();
+                        unsigned int sort_y = (unsigned int)cp[Geom::Y];
+                        unsigned int current_y;
+                        
+                        for (std::deque<Geom::Point>::iterator i = fill_queue.begin(); i != fill_queue.end(); ++i) {
+                            Geom::Point current = *i;
+                            current_y = (unsigned int)current[Geom::Y];
+                            if (current_y != sort_y) {
+                                if (start_sort != end_sort) {
+                                    std::sort(start_sort, end_sort, sort_fill_queue_horizontal);
+                                }
+                                sort_y = current_y;
+                                start_sort = i;
+                            }
+                            end_sort = i;
+                        }
+                        if (start_sort != end_sort) {
+                            std::sort(start_sort, end_sort, sort_fill_queue_horizontal);
+                        }
+                        
+                        cp = fill_queue.front();
+                    }
+                }
+
+                old_fill_queue_size = new_fill_queue_size;
+            }
+
+            fill_queue.pop_front();
+
+            int x = (int)cp[Geom::X];
+            int y = (int)cp[Geom::Y];
+
+            min_y = MIN((unsigned int)y, min_y);
+            max_y = MAX((unsigned int)y, max_y);
+
+            unsigned char *trace_t = get_trace_pixel(trace_px, x, y, width);
+            if (!is_pixel_checked(trace_t)) {
+                mark_pixel_checked(trace_t);
+
+                if (y == 0) {
+                    if (bbox->min()[Geom::Y] > screen.min()[Geom::Y]) {
+                        aborted = true; break;
+                    } else {
+                        reached_screen_boundary = true;
+                    }
+                }
+
+                if (y == y_limit) {
+                    if (bbox->max()[Geom::Y] < screen.max()[Geom::Y]) {
+                        aborted = true; break;
+                    } else {
+                        reached_screen_boundary = true;
+                    }
+                }
+
+                bci.is_left = true;
+                bci.x = x;
+                bci.y = y;
+
+                ScanlineCheckResult result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci, &min_x, &max_x);
+
+                switch (result) {
+                    case SCANLINE_CHECK_ABORTED:
+                        aborted = true;
+                        break;
+                    case SCANLINE_CHECK_BOUNDARY:
+                        reached_screen_boundary = true;
+                        break;
+                    default:
+                        break;
+                }
+
+                if (bci.x < width) {
+                    trace_t++;
+                    if (!is_pixel_checked(trace_t) && !is_pixel_queued(trace_t)) {
+                        mark_pixel_checked(trace_t);
+                        bci.is_left = false;
+                        bci.x = x + 1;
+
+                        result = perform_bitmap_scanline_check(&fill_queue, px, trace_px, orig_color, bci, &min_x, &max_x);
+
+                        switch (result) {
+                            case SCANLINE_CHECK_ABORTED:
+                                aborted = true;
+                                break;
+                            case SCANLINE_CHECK_BOUNDARY:
+                                reached_screen_boundary = true;
+                                break;
+                            default:
+                                break;
+                        }
+                    }
+                }
+            }
+
+            bci.current_step++;
+
+            if (bci.current_step > bci.max_queue_size) {
+                aborted = true;
+            }
+        }
+    }
+    
+    g_free(px);
+    
+    if (aborted) {
+        g_free(trace_px);
+        desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Area is not bounded</b>, cannot fill."));
+        return;
+    }
+    
+    if (reached_screen_boundary) {
+        desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("<b>Only the visible part of the bounded area was filled.</b> If you want to fill all of the area, undo, zoom out, and fill again.")); 
+    }
+
+    unsigned int trace_padding = bci.radius + 1;
+    if (min_y > trace_padding) { min_y -= trace_padding; }
+    if (max_y < (y_limit - trace_padding)) { max_y += trace_padding; }
+    if (min_x > trace_padding) { min_x -= trace_padding; }
+    if (max_x < (width - 1 - trace_padding)) { max_x += trace_padding; }
+
+    Geom::Affine inverted_affine = Geom::Translate(min_x, min_y) * doc2img.inverse();
+    
+    do_trace(bci, trace_px, desktop, inverted_affine, min_x, max_x, min_y, max_y, union_with_selection);
+
+    g_free(trace_px);
+    
+    DocumentUndo::done(document, _("Fill bounded area"), INKSCAPE_ICON("color-fill"));
+}
+
+bool FloodTool::item_handler(SPItem* item, GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if ((event->button.state & GDK_CONTROL_MASK) && event->button.button == 1) {
+            Geom::Point const button_w(event->button.x, event->button.y);
+
+            SPItem *item = sp_event_context_find_item(_desktop, button_w, TRUE, TRUE);
+
+            // Set style
+            _desktop->applyCurrentOrToolStyle(item, "/tools/paintbucket", false);
+
+            DocumentUndo::done(_desktop->getDocument(), _("Set style on object"), INKSCAPE_ICON("color-fill"));
+            // Dead assignment: Value stored to 'ret' is never read
+            //ret = TRUE;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+//    if (((ToolBaseClass *) sp_flood_context_parent_class)->item_handler) {
+//        ret = ((ToolBaseClass *) sp_flood_context_parent_class)->item_handler(event_context, item, event);
+//    }
+    // CPPIFY: ret is overwritten...
+    ret = ToolBase::item_handler(item, event);
+
+    return ret;
+}
+
+bool FloodTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+    
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if (event->button.button == 1) {
+            if (!(event->button.state & GDK_CONTROL_MASK)) {
+                Geom::Point const button_w(event->button.x, event->button.y);
+
+                if (Inkscape::have_viable_layer(_desktop, this->defaultMessageContext())) {
+                    // save drag origin
+                    this->xp = (gint) button_w[Geom::X];
+                    this->yp = (gint) button_w[Geom::Y];
+                    this->within_tolerance = true;
+                      
+                    dragging = true;
+
+                    Geom::Point const p(_desktop->w2d(button_w));
+                    Inkscape::Rubberband::get(_desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                    Inkscape::Rubberband::get(_desktop)->start(_desktop, p);
+                }
+            }
+        }
+
+    case GDK_MOTION_NOTIFY:
+        if ( dragging && ( event->motion.state & GDK_BUTTON1_MASK )) {
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            
+            this->within_tolerance = false;
+            
+            Geom::Point const motion_pt(event->motion.x, event->motion.y);
+            Geom::Point const p(_desktop->w2d(motion_pt));
+
+            if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                Inkscape::Rubberband::get(_desktop)->move(p);
+                this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw over</b> areas to add to fill, hold <b>Alt</b> for touch fill"));
+                gobble_motion_events(GDK_BUTTON1_MASK);
+            }
+        }
+        break;
+
+    case GDK_BUTTON_RELEASE:
+        if (event->button.button == 1) {
+            Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+
+            if (r->is_started()) {
+                dragging = false;
+                bool is_point_fill = this->within_tolerance;
+                bool is_touch_fill = event->button.state & GDK_MOD1_MASK;
+
+                // It's possible for the user to sneakily change the tool while the
+                // Gtk main loop has control, so we save the current desktop address:
+                SPDesktop* current_desktop = _desktop;
+
+                current_desktop->setWaitingCursor();
+                sp_flood_do_flood_fill(current_desktop, event,
+                                       event->button.state & GDK_SHIFT_MASK,
+                                       is_point_fill, is_touch_fill);
+                current_desktop->clearWaitingCursor();
+                r->stop();
+
+                // We check whether our object was deleted by SPDesktop::setEventContext()
+                // TODO: fix SPDesktop so that it doesn't kill us before we're done
+                ToolBase *current_context = current_desktop->getEventContext();
+
+                if (current_context == (ToolBase*)this) { // We're still alive
+                    this->defaultMessageContext()->clear();
+                } // else just return without dereferencing `this`.
+                ret = true;
+            }
+        }
+        break;
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Up:
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Up:
+        case GDK_KEY_KP_Down:
+            // prevent the zoom field from activation
+            if (!MOD__CTRL_ONLY(event))
+                ret = TRUE;
+            break;
+        default:
+            break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void FloodTool::finishItem() {
+    this->message_context->clear();
+
+    if (this->item != nullptr) {
+        this->item->updateRepr();
+
+        _desktop->getSelection()->set(this->item);
+        DocumentUndo::done(_desktop->getDocument(), _("Fill bounded area"), INKSCAPE_ICON("color-fill"));
+
+        this->item = nullptr;
+    }
+}
+
+void FloodTool::set_channels(gint channels) {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    prefs->setInt("/tools/paintbucket/channels", channels);
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/flood-tool.h b/src/ui/tools/flood-tool.h
new file mode 100644
index 0000000..290021e
--- /dev/null
+++ b/src/ui/tools/flood-tool.h
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_FLOOD_CONTEXT_H__
+#define __SP_FLOOD_CONTEXT_H__
+
+/*
+ * Flood fill drawing context
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   John Bintz <jcoswell@coswellproductions.org>
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <vector>
+
+#include <sigc++/connection.h>
+
+#include "ui/tools/tool-base.h"
+
+#define SP_FLOOD_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::FloodTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_FLOOD_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::FloodTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+
+class Selection;
+
+namespace UI {
+namespace Tools {
+
+class FloodTool : public ToolBase {
+public:
+    FloodTool(SPDesktop *desktop);
+    ~FloodTool() override;
+
+	SPItem *item;
+
+	sigc::connection sel_changed_connection;
+
+	bool root_handler(GdkEvent* event) override;
+	bool item_handler(SPItem* item, GdkEvent* event) override;
+
+	static void set_channels(gint channels);
+	static const std::vector<Glib::ustring> channel_list;
+	static const std::vector<Glib::ustring> gap_list;
+
+private:
+	void selection_changed(Inkscape::Selection* selection);
+	void finishItem();
+};
+
+enum PaintBucketChannels {
+    FLOOD_CHANNELS_RGB,
+    FLOOD_CHANNELS_R,
+    FLOOD_CHANNELS_G,
+    FLOOD_CHANNELS_B,
+    FLOOD_CHANNELS_H,
+    FLOOD_CHANNELS_S,
+    FLOOD_CHANNELS_L,
+    FLOOD_CHANNELS_ALPHA
+};
+
+}
+}
+}
+
+#endif
diff --git a/src/ui/tools/freehand-base.cpp b/src/ui/tools/freehand-base.cpp
new file mode 100644
index 0000000..8b5b56c
--- /dev/null
+++ b/src/ui/tools/freehand-base.cpp
@@ -0,0 +1,1077 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Generic drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ * Copyright (C) 2012 Johan Engelen
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#define DRAW_VERBOSE
+
+#include "freehand-base.h"
+
+#include "desktop-style.h"
+#include "id-clash.h"
+#include "message-stack.h"
+#include "selection-chemistry.h"
+#include "style.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+
+#include "include/macros.h"
+
+#include "live_effects/lpe-bendpath.h"
+#include "live_effects/lpe-patternalongpath.h"
+#include "live_effects/lpe-simplify.h"
+#include "live_effects/lpe-powerstroke.h"
+
+#include "object/sp-item-group.h"
+#include "object/sp-path.h"
+#include "object/sp-rect.h"
+#include "object/sp-use.h"
+
+#include "svg/svg-color.h"
+#include "svg/svg.h"
+
+#include "ui/clipboard.h"
+#include "ui/draw-anchor.h"
+#include "ui/icon-names.h"
+#include "ui/tools/lpe-tool.h"
+#include "ui/tools/pen-tool.h"
+#include "ui/tools/pencil-tool.h"
+
+#define MIN_PRESSURE      0.0
+#define MAX_PRESSURE      1.0
+#define DEFAULT_PRESSURE  1.0
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static void spdc_selection_changed(Inkscape::Selection *sel, FreehandBase *dc);
+static void spdc_selection_modified(Inkscape::Selection *sel, guint flags, FreehandBase *dc);
+
+static void spdc_attach_selection(FreehandBase *dc, Inkscape::Selection *sel);
+
+/**
+ * Flushes white curve(s) and additional curve into object.
+ *
+ * No cleaning of colored curves - this has to be done by caller
+ * No rereading of white data, so if you cannot rely on ::modified, do it in caller
+ */
+static void spdc_flush_white(FreehandBase *dc, SPCurve *gc);
+
+static void spdc_reset_white(FreehandBase *dc);
+static void spdc_free_colors(FreehandBase *dc);
+
+FreehandBase::FreehandBase(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename)
+    : ToolBase(desktop, prefs_path, cursor_filename)
+    , selection(nullptr)
+    , attach(false)
+    , red_color(0xff00007f)
+    , blue_color(0x0000ff7f)
+    , green_color(0x00ff007f)
+    , highlight_color(0x0000007f)
+    , red_bpath(nullptr)
+    , red_curve(nullptr)
+    , blue_bpath(nullptr)
+    , blue_curve(nullptr)
+    , green_curve(nullptr)
+    , green_anchor(nullptr)
+    , green_closed(false)
+    , white_item(nullptr)
+    , sa_overwrited(nullptr)
+    , sa(nullptr)
+    , ea(nullptr)
+    , waiting_LPE_type(Inkscape::LivePathEffect::INVALID_LPE)
+    , red_curve_is_valid(false)
+    , anchor_statusbar(false)
+    , tablet_enabled(false)
+    , is_tablet(false)
+    , pressure(DEFAULT_PRESSURE)
+{
+    this->selection = desktop->getSelection();
+
+    // Connect signals to track selection changes
+    this->sel_changed_connection = this->selection->connectChanged(
+        sigc::bind(sigc::ptr_fun(&spdc_selection_changed), this)
+    );
+    this->sel_modified_connection = this->selection->connectModified(
+        sigc::bind(sigc::ptr_fun(&spdc_selection_modified), this)
+    );
+
+    // Create red bpath
+    this->red_bpath = new Inkscape::CanvasItemBpath(desktop->getCanvasSketch());
+    this->red_bpath->set_stroke(this->red_color);
+    this->red_bpath->set_fill(0x0, SP_WIND_RULE_NONZERO);
+
+    // Create red curve
+    this->red_curve.reset(new SPCurve());
+
+    // Create blue bpath
+    this->blue_bpath = new Inkscape::CanvasItemBpath(desktop->getCanvasSketch());
+    this->blue_bpath->set_stroke(this->blue_color);
+    this->blue_bpath->set_fill(0x0, SP_WIND_RULE_NONZERO);
+
+    // Create blue curve
+    this->blue_curve.reset(new SPCurve());
+
+    // Create green curve
+    this->green_curve.reset(new SPCurve());
+
+    // No green anchor by default
+    this->green_anchor = nullptr;
+    this->green_closed = FALSE;
+
+    // Create start anchor alternative curve
+    this->sa_overwrited.reset(new SPCurve());
+
+    this->attach = TRUE;
+    spdc_attach_selection(this, this->selection);
+}
+
+FreehandBase::~FreehandBase()
+{
+    this->sel_changed_connection.disconnect();
+    this->sel_modified_connection.disconnect();
+
+    ungrabCanvasEvents();
+
+    if (this->selection) {
+        this->selection = nullptr;
+    }
+
+    spdc_free_colors(this);
+}
+
+void FreehandBase::set(const Inkscape::Preferences::Entry& /*value*/) {
+}
+
+bool FreehandBase::root_handler(GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+        case GDK_KEY_PRESS:
+            switch (get_latin_keyval (&event->key)) {
+                case GDK_KEY_Up:
+                case GDK_KEY_Down:
+                case GDK_KEY_KP_Up:
+                case GDK_KEY_KP_Down:
+                    // prevent the zoom field from activation
+                    if (!MOD__CTRL_ONLY(event)) {
+                        ret = TRUE;
+                    }
+                    break;
+                default:
+            break;
+        }
+        break;
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+std::optional<Geom::Point> FreehandBase::red_curve_get_last_point()
+{
+    std::optional<Geom::Point> p;
+    if (!red_curve->is_empty()) {
+        p = red_curve->last_point();
+    }
+    return p;
+}
+
+static Glib::ustring const tool_name(FreehandBase *dc)
+{
+    return ( SP_IS_PEN_CONTEXT(dc)
+             ? "/tools/freehand/pen"
+             : "/tools/freehand/pencil" );
+}
+
+static void spdc_paste_curve_as_freehand_shape(Geom::PathVector const &newpath, FreehandBase *dc, SPItem *item)
+{
+    using namespace Inkscape::LivePathEffect;
+
+    // TODO: Don't paste path if nothing is on the clipboard
+    SPDocument *document = dc->getDesktop()->doc();
+    Effect::createAndApply(PATTERN_ALONG_PATH, document, item);
+    Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
+    static_cast<LPEPatternAlongPath*>(lpe)->pattern.set_new_value(newpath,true);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    double scale = prefs->getDouble("/live_effects/skeletal/width", 1);
+    if (!scale) {
+        scale = 1;
+    }
+    Inkscape::SVGOStringStream os;
+    os << scale;
+    lpe->getRepr()->setAttribute("prop_scale", os.str());
+}
+
+void spdc_apply_style(SPObject *obj)
+{
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    if (obj->style) {
+        if (obj->style->stroke.isPaintserver()) {
+            SPPaintServer *server = obj->style->getStrokePaintServer();
+            if (server) {
+                Glib::ustring str;
+                str += "url(#";
+                str += server->getId();
+                str += ")";
+                sp_repr_css_set_property(css, "fill", str.c_str());
+            }
+        } else if (obj->style->stroke.isColor()) {
+            gchar c[64];
+            sp_svg_write_color(
+                c, sizeof(c),
+                obj->style->stroke.value.color.toRGBA32(SP_SCALE24_TO_FLOAT(obj->style->stroke_opacity.value)));
+            sp_repr_css_set_property(css, "fill", c);
+        } else {
+            sp_repr_css_set_property(css, "fill", "none");
+        }
+    } else {
+        sp_repr_css_unset_property(css, "fill");
+    }
+
+    sp_repr_css_set_property(css, "fill-rule", "nonzero");
+    sp_repr_css_set_property(css, "stroke", "none");
+
+    sp_desktop_apply_css_recursive(obj, css, true);
+    sp_repr_css_attr_unref(css);
+}
+static void spdc_apply_powerstroke_shape(std::vector<Geom::Point> points, FreehandBase *dc, SPItem *item,
+                                         gint maxrecursion = 0)
+{
+    using namespace Inkscape::LivePathEffect;
+    SPDesktop *desktop = dc->getDesktop();
+    SPDocument *document = desktop->getDocument();
+    if (!document || !desktop) {
+        return;
+    }
+    if (SP_IS_PENCIL_CONTEXT(dc)) {
+        if (dc->tablet_enabled) {
+            SPObject *elemref = nullptr;
+            if ((elemref = document->getObjectById("power_stroke_preview"))) {
+                elemref->getRepr()->removeAttribute("style");
+                SPItem *successor = dynamic_cast<SPItem *>(elemref);
+                sp_desktop_apply_style_tool(desktop, successor->getRepr(),
+                                            Glib::ustring("/tools/freehand/pencil").data(), false);
+                spdc_apply_style(successor);
+                sp_object_ref(item);
+                item->deleteObject(false);
+                item->setSuccessor(successor);
+                sp_object_unref(item);
+                item = dynamic_cast<SPItem *>(successor);
+                dc->selection->set(item);
+                item->setLocked(false);
+                dc->white_item = item;
+                rename_id(item, "path-1");
+            }
+            return;
+        }
+    }
+    Effect::createAndApply(POWERSTROKE, document, item);
+    Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
+
+    static_cast<LPEPowerStroke*>(lpe)->offset_points.param_set_and_write_new_value(points);
+
+    // write powerstroke parameters:
+    lpe->getRepr()->setAttribute("start_linecap_type", "zerowidth");
+    lpe->getRepr()->setAttribute("end_linecap_type", "zerowidth");
+    lpe->getRepr()->setAttribute("sort_points", "true");
+    lpe->getRepr()->setAttribute("not_jump", "false");
+    lpe->getRepr()->setAttribute("interpolator_type", "CubicBezierJohan");
+    lpe->getRepr()->setAttribute("interpolator_beta", "0.2");
+    lpe->getRepr()->setAttribute("miter_limit", "4");
+    lpe->getRepr()->setAttribute("scale_width", "1");
+    lpe->getRepr()->setAttribute("linejoin_type", "extrp_arc");
+}
+
+static void spdc_apply_bend_shape(gchar const *svgd, FreehandBase *dc, SPItem *item)
+{
+    using namespace Inkscape::LivePathEffect;
+    SPUse *use = dynamic_cast<SPUse *>(item);
+    if ( use ) {
+        return;
+    }
+    SPDesktop *desktop = dc->getDesktop();
+    SPDocument *document = desktop->getDocument();
+    if (!document || !desktop) {
+        return;
+    }
+    if (!SP_IS_LPE_ITEM(item)) {
+        return;
+    }
+    if(!SP_LPE_ITEM(item)->hasPathEffectOfType(BEND_PATH)){
+        Effect::createAndApply(BEND_PATH, document, item);
+    }
+    Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
+
+    // write bend parameters:
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    double scale = prefs->getDouble("/live_effects/bend_path/width", 1);
+    if (!scale) {
+        scale = 1;
+    }
+    Inkscape::SVGOStringStream os;
+    os << scale;
+    lpe->getRepr()->setAttribute("prop_scale", os.str());
+    lpe->getRepr()->setAttribute("scale_y_rel", "false");
+    lpe->getRepr()->setAttribute("vertical", "false");
+    static_cast<LPEBendPath*>(lpe)->bend_path.paste_param_path(svgd);
+}
+
+static void spdc_apply_simplify(std::string threshold, FreehandBase *dc, SPItem *item)
+{
+    const SPDesktop *desktop = dc->getDesktop();
+    SPDocument *document = desktop->getDocument();
+    if (!document || !desktop) {
+        return;
+    }
+    using namespace Inkscape::LivePathEffect;
+
+    Effect::createAndApply(SIMPLIFY, document, item);
+    Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
+    // write simplify parameters:
+    lpe->getRepr()->setAttribute("steps", "1");
+    lpe->getRepr()->setAttributeOrRemoveIfEmpty("threshold", threshold);
+    lpe->getRepr()->setAttribute("smooth_angles", "360");
+    lpe->getRepr()->setAttribute("helper_size", "0");
+    lpe->getRepr()->setAttribute("simplify_individual_paths", "false");
+    lpe->getRepr()->setAttribute("simplify_just_coalesce", "false");
+}
+
+static shapeType previous_shape_type = NONE;
+
+static void spdc_check_for_and_apply_waiting_LPE(FreehandBase *dc, SPItem *item, SPCurve *curve, bool is_bend)
+{
+    using namespace Inkscape::LivePathEffect;
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    auto *desktop = dc->getDesktop();
+
+    if (item && SP_IS_LPE_ITEM(item)) {
+        double defsize = 10 / (0.265 * dc->getDesktop()->getDocument()->getDocumentScale()[0]);
+#define SHAPE_LENGTH defsize
+#define SHAPE_HEIGHT defsize
+        //Store the clipboard path to apply in the future without the use of clipboard
+        static Geom::PathVector previous_shape_pathv;
+        static SPItem *bend_item = nullptr;
+        shapeType shape = (shapeType)prefs->getInt(tool_name(dc) + "/shape", 0);
+        if (previous_shape_type == NONE) {
+            previous_shape_type = shape;
+        }
+        if(shape == LAST_APPLIED){
+            shape = previous_shape_type;
+            if(shape == CLIPBOARD || shape == BEND_CLIPBOARD){
+                shape = LAST_APPLIED;
+            }
+        }
+        Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
+        if (is_bend && 
+           (shape == BEND_CLIPBOARD || (shape == LAST_APPLIED && previous_shape_type != CLIPBOARD)) && 
+            cm->paste(desktop, true))
+        {
+            bend_item = dc->selection->singleItem();
+            if(!bend_item || (!SP_IS_SHAPE(bend_item) && !SP_IS_GROUP(bend_item))){
+                previous_shape_type = NONE;
+                return;
+            }
+        } else if(is_bend) {
+            return;
+        }
+        if (!is_bend && previous_shape_type == BEND_CLIPBOARD && shape == BEND_CLIPBOARD) {
+            return;
+        }
+        bool shape_applied = false;
+        bool simplify = prefs->getInt(tool_name(dc) + "/simplify", 0);
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        guint mode = prefs->getInt("/tools/freehand/pencil/freehand-mode", 0);
+        if(simplify && mode != 2){
+            double tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0);
+            tol = tol/(100.0*(102.0-tol));
+            std::ostringstream ss;
+            ss << tol;
+            spdc_apply_simplify(ss.str(), dc, item);
+            sp_lpe_item_update_patheffect(SP_LPE_ITEM(item), true, false);
+        }
+        if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 1) {
+            Effect::createAndApply(SPIRO, dc->getDesktop()->getDocument(), item);
+        }
+
+        if (prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 2) {
+            Effect::createAndApply(BSPLINE, dc->getDesktop()->getDocument(), item);
+        }
+        SPShape *sp_shape = dynamic_cast<SPShape *>(item);
+        if (sp_shape) {
+            curve = sp_shape->curve();
+        }
+        auto curveref = curve->ref();
+        SPCSSAttr *css_item = sp_css_attr_from_object(item, SP_STYLE_FLAG_ALWAYS);
+        const char *cstroke = sp_repr_css_property(css_item, "stroke", "none");
+        const char *cfill = sp_repr_css_property(css_item, "fill", "none");
+        const char *stroke_width = sp_repr_css_property(css_item, "stroke-width", "0");
+        double swidth;
+        sp_svg_number_read_d(stroke_width, &swidth);
+        swidth = prefs->getDouble("/live_effects/powerstroke/width", SHAPE_HEIGHT / 2);
+        if (!swidth) {
+            swidth = swidth/2;
+        }
+        swidth = std::abs(swidth);
+        if (SP_IS_PENCIL_CONTEXT(dc)) {
+            if (dc->tablet_enabled) {
+                std::vector<Geom::Point> points;
+                spdc_apply_powerstroke_shape(points, dc, item);
+                shape_applied = true;
+                shape = NONE;
+                previous_shape_type = NONE;
+            }
+        }
+
+        switch (shape) {
+            case NONE:
+                // don't apply any shape
+                break;
+            case TRIANGLE_IN:
+            {
+                // "triangle in"
+                std::vector<Geom::Point> points(1);
+                
+                points[0] = Geom::Point(0., swidth);
+                //points[0] *= i2anc_affine(static_cast<SPItem *>(item->parent), NULL).inverse();
+                spdc_apply_powerstroke_shape(points, dc, item);
+
+                shape_applied = false;
+                break;
+            }
+            case TRIANGLE_OUT:
+            {
+                // "triangle out"
+                guint curve_length = curveref->get_segment_count();
+                std::vector<Geom::Point> points(1);
+                points[0] = Geom::Point(0, swidth);
+                //points[0] *= i2anc_affine(static_cast<SPItem *>(item->parent), NULL).inverse();
+                points[0][Geom::X] = (double)curve_length;
+                spdc_apply_powerstroke_shape(points, dc, item);
+
+                shape_applied = false;
+                break;
+            }
+            case ELLIPSE:
+            {
+                // "ellipse"
+                auto c = std::make_unique<SPCurve>();
+                const double C1 = 0.552;
+                c->moveto(0, SHAPE_HEIGHT/2);
+                c->curveto(0, (1 - C1) * SHAPE_HEIGHT/2, (1 - C1) * SHAPE_LENGTH/2, 0, SHAPE_LENGTH/2, 0);
+                c->curveto((1 + C1) * SHAPE_LENGTH/2, 0, SHAPE_LENGTH, (1 - C1) * SHAPE_HEIGHT/2, SHAPE_LENGTH, SHAPE_HEIGHT/2);
+                c->curveto(SHAPE_LENGTH, (1 + C1) * SHAPE_HEIGHT/2, (1 + C1) * SHAPE_LENGTH/2, SHAPE_HEIGHT, SHAPE_LENGTH/2, SHAPE_HEIGHT);
+                c->curveto((1 - C1) * SHAPE_LENGTH/2, SHAPE_HEIGHT, 0, (1 + C1) * SHAPE_HEIGHT/2, 0, SHAPE_HEIGHT/2);
+                c->closepath();
+                spdc_paste_curve_as_freehand_shape(c->get_pathvector(), dc, item);
+
+                shape_applied = true;
+                break;
+            }
+            case CLIPBOARD:
+            {
+                // take shape from clipboard;
+                Inkscape::UI::ClipboardManager *cm = Inkscape::UI::ClipboardManager::get();
+                if(cm->paste(desktop,true)){
+                    SPItem * pasted_clipboard = dc->selection->singleItem();
+                    dc->selection->toCurves(true);
+                    pasted_clipboard = dc->selection->singleItem();
+                    if(pasted_clipboard){
+                        Inkscape::XML::Node *pasted_clipboard_root = pasted_clipboard->getRepr();
+                        Inkscape::XML::Node *path = sp_repr_lookup_name(pasted_clipboard_root, "svg:path", -1); // unlimited search depth
+                        if ( path != nullptr ) {
+                            gchar const *svgd = path->attribute("d");
+                            dc->selection->remove(pasted_clipboard);
+                            previous_shape_pathv =  sp_svg_read_pathv(svgd);
+                            previous_shape_pathv *= pasted_clipboard->transform;
+                            spdc_paste_curve_as_freehand_shape(previous_shape_pathv, dc, item);
+
+                            shape = CLIPBOARD;
+                            shape_applied = true;
+                            pasted_clipboard->deleteObject();
+                        } else {
+                            shape = NONE;
+                        }
+                    } else {
+                        shape = NONE;
+                    }
+                } else {
+                    shape = NONE;
+                }
+                break;
+            }
+            case BEND_CLIPBOARD:
+            {
+                gchar const *svgd = item->getRepr()->attribute("d");
+                if(bend_item && (SP_IS_SHAPE(bend_item) || SP_IS_GROUP(bend_item))){
+                    // If item is a SPRect, convert it to path first:
+                    if ( dynamic_cast<SPRect *>(bend_item) ) {
+                        if (desktop) {
+                            Inkscape::Selection *sel = desktop->getSelection();
+                            if ( sel && !sel->isEmpty() ) {
+                                sel->clear();
+                                sel->add(bend_item);
+                                sel->toCurves();
+                                bend_item = sel->singleItem();
+                            }
+                        }
+                    }
+                    bend_item->moveTo(item,false);
+                    bend_item->transform.setTranslation(Geom::Point());
+                    spdc_apply_bend_shape(svgd, dc, bend_item);
+                    dc->selection->add(bend_item);
+
+                    shape = BEND_CLIPBOARD;
+                } else {
+                    bend_item = nullptr;
+                    shape = NONE;
+                }
+                break;
+            }
+            case LAST_APPLIED:
+            {
+                if(previous_shape_type == CLIPBOARD){
+                    if(previous_shape_pathv.size() != 0){
+                        spdc_paste_curve_as_freehand_shape(previous_shape_pathv, dc, item);
+                        shape_applied = true;
+                        shape = CLIPBOARD;
+                    } else{
+                        shape = NONE;
+                    }
+                } else {
+                    if(bend_item != nullptr && bend_item->getRepr() != nullptr){
+                        gchar const *svgd = item->getRepr()->attribute("d");
+                        dc->selection->add(bend_item);
+                        dc->selection->duplicate();
+                        dc->selection->remove(bend_item);
+                        bend_item = dc->selection->singleItem();
+                        if(bend_item){
+                            bend_item->moveTo(item,false);
+                            Geom::Coord expansion_X = bend_item->transform.expansionX();
+                            Geom::Coord expansion_Y = bend_item->transform.expansionY();
+                            bend_item->transform = Geom::Affine(1,0,0,1,0,0);
+                            bend_item->transform.setExpansionX(expansion_X);
+                            bend_item->transform.setExpansionY(expansion_Y);
+                            spdc_apply_bend_shape(svgd, dc, bend_item);
+                            dc->selection->add(bend_item);
+
+                            shape = BEND_CLIPBOARD;
+                        } else {
+                            shape = NONE;
+                        }
+                    } else {
+                        shape = NONE;
+                    }
+                }
+                break;
+            }
+            default:
+                break;
+        }
+        previous_shape_type = shape;
+
+        if (shape_applied) {
+            // apply original stroke color as fill and unset stroke; then return
+            SPCSSAttr *css = sp_repr_css_attr_new();
+            if (!strcmp(cfill, "none")) {
+                sp_repr_css_set_property (css, "fill", cstroke);
+            } else {
+                sp_repr_css_set_property (css, "fill", cfill);
+            }
+            sp_repr_css_set_property (css, "stroke", "none");
+            sp_desktop_apply_css_recursive(dc->white_item, css, true);
+            sp_repr_css_attr_unref(css);
+            return;
+        }
+        if (dc->waiting_LPE_type != INVALID_LPE) {
+            Effect::createAndApply(dc->waiting_LPE_type, dc->getDesktop()->getDocument(), item);
+            dc->waiting_LPE_type = INVALID_LPE;
+
+            if (SP_IS_LPETOOL_CONTEXT(dc)) {
+                // since a geometric LPE was applied, we switch back to "inactive" mode
+                lpetool_context_switch_mode(SP_LPETOOL_CONTEXT(dc), INVALID_LPE);
+            }
+        }
+        if (SP_IS_PEN_CONTEXT(dc)) {
+            SP_PEN_CONTEXT(dc)->setPolylineMode();
+        }
+    }
+}
+
+/*
+ * Selection handlers
+ */
+
+static void spdc_selection_changed(Inkscape::Selection *sel, FreehandBase *dc)
+{
+    if (dc->attach) {
+        spdc_attach_selection(dc, sel);
+    }
+}
+
+/* fixme: We have to ensure this is not delayed (Lauris) */
+
+static void spdc_selection_modified(Inkscape::Selection *sel, guint /*flags*/, FreehandBase *dc)
+{
+    if (dc->attach) {
+        spdc_attach_selection(dc, sel);
+    }
+}
+
+static void spdc_attach_selection(FreehandBase *dc, Inkscape::Selection */*sel*/)
+{
+    // We reset white and forget white/start/end anchors
+    spdc_reset_white(dc);
+    dc->sa = nullptr;
+    dc->ea = nullptr;
+
+    SPItem *item = dc->selection ? dc->selection->singleItem() : nullptr;
+
+    if ( item && SP_IS_PATH(item) ) {
+        // Create new white data
+        // Item
+        dc->white_item = item;
+
+        // Curve list
+        // We keep it in desktop coordinates to eliminate calculation errors
+        auto path = static_cast<SPPath *>(item);
+        auto norm = SPCurve::copy(path->curveForEdit());
+        g_return_if_fail( norm != nullptr );
+        norm->transform((dc->white_item)->i2dt_affine());
+        dc->white_curves = norm->split();
+
+        // Anchor list
+        for (auto const &c_smart_ptr : dc->white_curves) {
+            auto *c = c_smart_ptr.get();
+            g_return_if_fail( c->get_segment_count() > 0 );
+            if ( !c->is_closed() ) {
+                std::unique_ptr<SPDrawAnchor> a =
+                    std::make_unique<SPDrawAnchor>(dc, c, TRUE, *(c->first_point()));
+                if (a)
+                    dc->white_anchors.push_back(std::move(a));
+                a = std::make_unique<SPDrawAnchor>(dc, c, FALSE, *(c->last_point()));
+                if (a)
+                    dc->white_anchors.push_back(std::move(a));
+            }
+        }
+        // fixme: recalculate active anchor?
+    }
+}
+
+
+void spdc_endpoint_snap_rotation(ToolBase* const ec, Geom::Point &p, Geom::Point const &o,
+                                 guint state)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    unsigned const snaps = abs(prefs->getInt("/options/rotationsnapsperpi/value", 12));
+
+    SnapManager &m = ec->getDesktop()->namedview->snap_manager;
+    m.setup(ec->getDesktop());
+
+    bool snap_enabled = m.snapprefs.getSnapEnabledGlobally();
+    if (state & GDK_SHIFT_MASK) {
+        // SHIFT disables all snapping, except the angular snapping. After all, the user explicitly asked for angular
+        // snapping by pressing CTRL, otherwise we wouldn't have arrived here. But although we temporarily disable
+        // the snapping here, we must still call for a constrained snap in order to apply the constraints (i.e. round
+        // to the nearest angle increment)
+        m.snapprefs.setSnapEnabledGlobally(false);
+    }
+
+    Inkscape::SnappedPoint dummy = m.constrainedAngularSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_NODE_HANDLE), std::optional<Geom::Point>(), o, snaps);
+    p = dummy.getPoint();
+
+    if (state & GDK_SHIFT_MASK) {
+        m.snapprefs.setSnapEnabledGlobally(snap_enabled); // restore the original setting
+    }
+
+    m.unSetup();
+}
+
+
+void spdc_endpoint_snap_free(ToolBase* const ec, Geom::Point& p, std::optional<Geom::Point> &start_of_line, guint const /*state*/)
+{
+    const SPDesktop *dt = ec->getDesktop();
+    SnapManager &m = dt->namedview->snap_manager;
+    Inkscape::Selection *selection = dt->getSelection();
+
+    // selection->singleItem() is the item that is currently being drawn. This item will not be snapped to (to avoid self-snapping)
+    // TODO: Allow snapping to the stationary parts of the item, and only ignore the last segment
+
+    m.setup(dt, true, selection->singleItem());
+    Inkscape::SnapCandidatePoint scp(p, Inkscape::SNAPSOURCE_NODE_HANDLE);
+    if (start_of_line) {
+        scp.addOrigin(*start_of_line);
+    }
+
+    Inkscape::SnappedPoint sp = m.freeSnap(scp);
+    p = sp.getPoint();
+
+    m.unSetup();
+}
+
+void spdc_concat_colors_and_flush(FreehandBase *dc, gboolean forceclosed)
+{
+    // Concat RBG
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    // Green
+    auto c = std::make_unique<SPCurve>();
+    std::swap(c, dc->green_curve);
+    for (auto path : dc->green_bpaths) {
+        delete path;
+    }
+    dc->green_bpaths.clear();
+
+    // Blue
+    c->append_continuous(*dc->blue_curve);
+    dc->blue_curve->reset();
+    dc->blue_bpath->set_bpath(nullptr);
+
+    // Red
+    if (dc->red_curve_is_valid) {
+        c->append_continuous(*(dc->red_curve));
+    }
+    dc->red_curve->reset();
+    dc->red_bpath->set_bpath(nullptr);
+
+    if (c->is_empty()) {
+        return;
+    }
+
+    // Step A - test, whether we ended on green anchor
+    if ( (forceclosed && 
+         (!dc->sa || (dc->sa && dc->sa->curve->is_empty()))) || 
+         ( dc->green_anchor && dc->green_anchor->active)) 
+    {
+        // We hit green anchor, closing Green-Blue-Red
+        dc->getDesktop()->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Path is closed."));
+        c->closepath_current();
+        // Closed path, just flush
+        spdc_flush_white(dc, c.get());
+        return;
+    }
+
+    // Step B - both start and end anchored to same curve
+    if ( dc->sa && dc->ea
+         && ( dc->sa->curve == dc->ea->curve )
+         && ( ( dc->sa != dc->ea )
+              || dc->sa->curve->is_closed() ) )
+    {
+        // We hit bot start and end of single curve, closing paths
+        dc->getDesktop()->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Closing path."));
+        dc->sa_overwrited->append_continuous(*c);
+        dc->sa_overwrited->closepath_current();
+        if (!dc->white_curves.empty()) {
+            dc->white_curves.erase(std::find(dc->white_curves.begin(),dc->white_curves.end(), dc->sa->curve));
+        }
+        dc->white_curves.push_back(std::move(dc->sa_overwrited));
+        spdc_flush_white(dc, nullptr);
+        return;
+    }
+    // Step C - test start
+    if (dc->sa) {
+        if (!dc->white_curves.empty()) {
+            dc->white_curves.erase(std::find(dc->white_curves.begin(),dc->white_curves.end(), dc->sa->curve));
+        }
+        dc->sa_overwrited->append_continuous(*c);
+        c = std::move(dc->sa_overwrited);
+    } else /* Step D - test end */ if (dc->ea) {
+        auto e = std::move(dc->ea->curve);
+        if (!dc->white_curves.empty()) {
+            dc->white_curves.erase(std::find(dc->white_curves.begin(),dc->white_curves.end(), e));
+        }
+        if (!dc->ea->start) {
+            e = e->create_reverse();
+        }
+        if(prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 1 || 
+            prefs->getInt(tool_name(dc) + "/freehand-mode", 0) == 2){
+                e = e->create_reverse();
+                Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*e->last_segment());
+                if(cubic){
+                    auto lastSeg = std::make_unique<SPCurve>();
+                    lastSeg->moveto((*cubic)[0]);
+                    lastSeg->curveto((*cubic)[1],(*cubic)[3],(*cubic)[3]);
+                    if( e->get_segment_count() == 1){
+                        e = std::move(lastSeg);
+                    }else{
+                        //we eliminate the last segment
+                        e->backspace();
+                        //and we add it again with the recreation
+                        e->append_continuous(*lastSeg);
+                    }
+                }
+                e = e->create_reverse();
+        }
+        c->append_continuous(*e);
+    }
+    if (forceclosed) 
+    {
+        dc->getDesktop()->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Path is closed."));
+        c->closepath_current();
+    }
+    spdc_flush_white(dc, c.get());
+}
+
+static void spdc_flush_white(FreehandBase *dc, SPCurve *gc)
+{
+    std::unique_ptr<SPCurve> c;
+
+    if (! dc->white_curves.empty()) {
+        g_assert(dc->white_item);
+
+        // c = concat(white_curves)
+        c = std::make_unique<SPCurve>();
+        for (auto const &wc : dc->white_curves) {
+            c->append(*wc);
+        }
+
+        dc->white_curves.clear();
+        if (gc) {
+            c->append(*gc);
+        }
+    } else if (gc) {
+        c = gc->ref();
+    } else {
+        return;
+    }
+
+    SPDesktop *desktop = dc->getDesktop();
+    SPDocument *doc = desktop->getDocument();
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+
+    // Now we have to go back to item coordinates at last
+    c->transform( dc->white_item
+                ? (dc->white_item)->dt2i_affine()
+                :  desktop->dt2doc() );
+
+    if ( c && !c->is_empty() ) {
+        // We actually have something to write
+
+        bool has_lpe = false;
+        Inkscape::XML::Node *repr;
+
+        if (dc->white_item) {
+            repr = dc->white_item->getRepr();
+            has_lpe = SP_LPE_ITEM(dc->white_item)->hasPathEffectRecursive();
+        } else {
+            repr = xml_doc->createElement("svg:path");
+            // Set style
+            sp_desktop_apply_style_tool(desktop, repr, tool_name(dc).data(), false);
+        }
+
+        auto str = sp_svg_write_path(c->get_pathvector());
+        if (has_lpe)
+            repr->setAttribute("inkscape:original-d", str);
+        else
+            repr->setAttribute("d", str);
+
+        auto layer = dc->currentLayer();
+        if (SP_IS_PENCIL_CONTEXT(dc) && dc->tablet_enabled) {
+            if (!dc->white_item) {
+                dc->white_item = SP_ITEM(layer->appendChildRepr(repr));
+            }
+            spdc_check_for_and_apply_waiting_LPE(dc, dc->white_item, c.get(), false);
+        }
+        if (!dc->white_item) {
+            // Attach repr
+            SPItem *item = dynamic_cast<SPItem *>(layer->appendChildRepr(repr));
+            dc->white_item = item;
+            //Bend needs the transforms applied after, Other effects best before
+            spdc_check_for_and_apply_waiting_LPE(dc, item, c.get(), true);
+            Inkscape::GC::release(repr);
+            item->transform = layer->i2doc_affine().inverse();
+            item->updateRepr();
+            item->doWriteTransform(item->transform, nullptr, true);
+            spdc_check_for_and_apply_waiting_LPE(dc, item, c.get(), false);
+            if(previous_shape_type == BEND_CLIPBOARD){
+                repr->parent()->removeChild(repr);
+                dc->white_item = nullptr;
+            } else {
+                dc->selection->set(repr);
+            }
+        }
+        SPLPEItem *lpeitem = dynamic_cast<SPLPEItem *>(dc->white_item);
+        if (lpeitem && lpeitem->hasPathEffectRecursive()) {
+            sp_lpe_item_update_patheffect(lpeitem, true, false);
+        }
+        DocumentUndo::done(doc, _("Draw path"), SP_IS_PEN_CONTEXT(dc)? INKSCAPE_ICON("draw-path") : INKSCAPE_ICON("draw-freehand"));
+
+        // When quickly drawing several subpaths with Shift, the next subpath may be finished and
+        // flushed before the selection_modified signal is fired by the previous change, which
+        // results in the tool losing all of the selected path's curve except that last subpath. To
+        // fix this, we force the selection_modified callback now, to make sure the tool's curve is
+        // in sync immediately.
+        spdc_selection_modified(desktop->getSelection(), 0, dc);
+    }
+
+    // Flush pending updates
+    doc->ensureUpToDate();
+}
+
+SPDrawAnchor *spdc_test_inside(FreehandBase *dc, Geom::Point p)
+{
+    SPDrawAnchor *active = nullptr;
+
+    // Test green anchor
+    if (dc->green_anchor) {
+        active = dc->green_anchor->anchorTest(p, TRUE);
+    }
+
+    for (auto& i:dc->white_anchors) {
+        SPDrawAnchor *na = i->anchorTest(p, !active);
+        if ( !active && na ) {
+            active = na;
+        }
+    }
+    return active;
+}
+
+static void spdc_reset_white(FreehandBase *dc)
+{
+    if (dc->white_item) {
+        // We do not hold refcount
+        dc->white_item = nullptr;
+    }
+    dc->white_curves.clear();
+    dc->white_anchors.clear();
+}
+
+static void spdc_free_colors(FreehandBase *dc)
+{
+    // Red
+    if (dc->red_bpath) {
+        delete dc->red_bpath;
+        dc->red_bpath = nullptr;
+    }
+    dc->red_curve.reset();
+
+    // Blue
+    if (dc->blue_bpath) {
+        delete dc->blue_bpath;
+        dc->blue_bpath = nullptr;
+    }
+    dc->blue_curve.reset();
+    
+    // Overwrite start anchor curve
+    dc->sa_overwrited.reset();
+    // Green
+    for (auto path : dc->green_bpaths) {
+        delete path;
+    }
+    dc->green_bpaths.clear();
+    dc->green_curve.reset();
+    dc->green_anchor.reset();
+
+    // White
+    if (dc->white_item) {
+        // We do not hold refcount
+        dc->white_item = nullptr;
+    }
+    dc->white_curves.clear();
+    dc->white_anchors.clear();
+}
+
+void spdc_create_single_dot(ToolBase *ec, Geom::Point const &pt, char const *tool, guint event_state) {
+    g_return_if_fail(!strcmp(tool, "/tools/freehand/pen") || !strcmp(tool, "/tools/freehand/pencil") 
+            || !strcmp(tool, "/tools/calligraphic") );
+    Glib::ustring tool_path = tool;
+
+    SPDesktop *desktop = ec->getDesktop();
+    Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
+    Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+    repr->setAttribute("sodipodi:type", "arc");
+    auto layer = ec->currentLayer();
+    SPItem *item = SP_ITEM(layer->appendChildRepr(repr));
+    item->transform = layer->i2doc_affine().inverse();
+    Inkscape::GC::release(repr);
+
+    // apply the tool's current style
+    sp_desktop_apply_style_tool(desktop, repr, tool, false);
+
+    // find out stroke width (TODO: is there an easier way??)
+    double stroke_width = 3.0;
+    gchar const *style_str = repr->attribute("style");
+    if (style_str) {
+        SPStyle style(desktop->doc());
+        style.mergeString(style_str);
+        stroke_width = style.stroke_width.computed;
+    }
+
+    // unset stroke and set fill color to former stroke color
+    gchar * str;
+    str = strcmp(tool, "/tools/calligraphic") ? g_strdup_printf("fill:#%06x;stroke:none;", sp_desktop_get_color_tool(desktop, tool, false) >> 8)
+        : g_strdup_printf("fill:#%06x;stroke:#%06x;", sp_desktop_get_color_tool(desktop, tool, true) >> 8, sp_desktop_get_color_tool(desktop, tool, false) >> 8);
+    repr->setAttribute("style", str);
+    g_free(str);
+
+    // put the circle where the mouse click occurred and set the diameter to the
+    // current stroke width, multiplied by the amount specified in the preferences
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    Geom::Affine const i2d (item->i2dt_affine ());
+    Geom::Point pp = pt * i2d.inverse();
+
+    double rad = 0.5 * prefs->getDouble(tool_path + "/dot-size", 3.0);
+    if (!strcmp(tool, "/tools/calligraphic"))
+        rad = 0.0333 * prefs->getDouble(tool_path + "/width", 3.0) / desktop->current_zoom() / desktop->getDocument()->getDocumentScale()[Geom::X];
+    if (event_state & GDK_MOD1_MASK) {
+        // TODO: We vary the dot size between 0.5*rad and 1.5*rad, where rad is the dot size
+        // as specified in prefs. Very simple, but it might be sufficient in practice. If not,
+        // we need to devise something more sophisticated.
+        double s = g_random_double_range(-0.5, 0.5);
+        rad *= (1 + s);
+    }
+    if (event_state & GDK_SHIFT_MASK) {
+        // double the point size
+        rad *= 2;
+    }
+
+    repr->setAttributeSvgDouble("sodipodi:cx", pp[Geom::X]);
+    repr->setAttributeSvgDouble("sodipodi:cy", pp[Geom::Y]);
+    repr->setAttributeSvgDouble("sodipodi:rx", rad * stroke_width);
+    repr->setAttributeSvgDouble("sodipodi:ry", rad * stroke_width);
+    item->updateRepr();
+    item->doWriteTransform(item->transform, nullptr, true);
+
+    desktop->getSelection()->set(item);
+
+    desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating single dot"));
+    DocumentUndo::done(desktop->getDocument(), _("Create single dot"), "");
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/freehand-base.h b/src/ui/tools/freehand-base.h
new file mode 100644
index 0000000..e01af7a
--- /dev/null
+++ b/src/ui/tools/freehand-base.h
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_DRAW_CONTEXT_H
+#define SEEN_SP_DRAW_CONTEXT_H
+
+/*
+ * Generic drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <memory>
+#include <optional>
+
+#include <sigc++/connection.h>
+
+#include "ui/tools/tool-base.h"
+#include "live_effects/effect-enum.h"
+
+class SPCurve;
+class SPCanvasItem;
+
+struct SPDrawAnchor;
+
+namespace Inkscape {
+    class CanvasItemBpath;
+    class Selection;
+}
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum shapeType { NONE, TRIANGLE_IN, TRIANGLE_OUT, ELLIPSE, CLIPBOARD, BEND_CLIPBOARD, LAST_APPLIED };
+
+class FreehandBase : public ToolBase {
+public:
+    FreehandBase(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename);
+    ~FreehandBase() override;
+
+    Inkscape::Selection *selection;
+
+    bool attach;
+
+    guint32 red_color;
+    guint32 blue_color;
+    guint32 green_color;
+    guint32 highlight_color;
+
+    // Red - Last segment as it's drawn.
+    Inkscape::CanvasItemBpath *red_bpath;
+    std::unique_ptr<SPCurve> red_curve;
+    std::optional<Geom::Point> red_curve_get_last_point();
+
+    // Blue - New path after LPE as it's drawn.
+    Inkscape::CanvasItemBpath *blue_bpath;
+    std::unique_ptr<SPCurve> blue_curve;
+
+    // Green - New path as it's drawn.
+    std::vector<Inkscape::CanvasItemBpath *> green_bpaths;
+    std::unique_ptr<SPCurve> green_curve;
+    std::unique_ptr<SPDrawAnchor> green_anchor;
+    gboolean green_closed; // a flag meaning we hit the green anchor, so close the path on itself
+
+    // White
+    SPItem *white_item;
+    std::list<std::unique_ptr<SPCurve>> white_curves;
+    std::vector<std::unique_ptr<SPDrawAnchor>> white_anchors;
+
+    // Temporary modified curve when start anchor
+    std::unique_ptr<SPCurve> sa_overwrited;
+
+    // Start anchor
+    SPDrawAnchor *sa;
+
+    // End anchor
+    SPDrawAnchor *ea;
+
+
+    /* Type of the LPE that is to be applied automatically to a finished path (if any) */
+    Inkscape::LivePathEffect::EffectType waiting_LPE_type;
+
+    sigc::connection sel_changed_connection;
+    sigc::connection sel_modified_connection;
+
+    bool red_curve_is_valid;
+
+    bool anchor_statusbar;
+    
+    bool tablet_enabled;
+
+    bool is_tablet;
+
+    gdouble pressure;
+    void set(const Inkscape::Preferences::Entry& val) override;
+
+protected:
+    bool root_handler(GdkEvent* event) override;
+};
+
+/**
+ * Returns FIRST active anchor (the activated one).
+ */
+SPDrawAnchor *spdc_test_inside(FreehandBase *dc, Geom::Point p);
+
+/**
+ * Concats red, blue and green.
+ * If any anchors are defined, process these, optionally removing curves from white list
+ * Invoke _flush_white to write result back to object.
+ */
+void spdc_concat_colors_and_flush(FreehandBase *dc, gboolean forceclosed);
+
+/**
+ *  Snaps node or handle to PI/rotationsnapsperpi degree increments.
+ *
+ *  @param dc draw context.
+ *  @param p cursor point (to be changed by snapping).
+ *  @param o origin point.
+ *  @param state  keyboard state to check if ctrl or shift was pressed.
+ */
+void spdc_endpoint_snap_rotation(ToolBase* const ec, Geom::Point &p, Geom::Point const &o, guint state);
+
+void spdc_endpoint_snap_free(ToolBase* const ec, Geom::Point &p, std::optional<Geom::Point> &start_of_line, guint state);
+
+/**
+ * If we have an item and a waiting LPE, apply the effect to the item
+ * (spiro spline mode is treated separately).
+ */
+void spdc_check_for_and_apply_waiting_LPE(FreehandBase *dc, SPItem *item);
+
+/**
+ * Create a single dot represented by a circle.
+ */
+void spdc_create_single_dot(ToolBase *ec, Geom::Point const &pt, char const *tool, guint event_state);
+
+}
+}
+}
+
+#endif // SEEN_SP_DRAW_CONTEXT_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/gradient-tool.cpp b/src/ui/tools/gradient-tool.cpp
new file mode 100644
index 0000000..fff39e8
--- /dev/null
+++ b/src/ui/tools/gradient-tool.cpp
@@ -0,0 +1,822 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Gradient drawing and editing tool
+ *
+ * Authors:
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2007 Johan Engelen
+ * Copyright (C) 2005 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <glibmm/i18n.h>
+#include <gdk/gdkkeysyms.h>
+
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "gradient-chemistry.h"
+#include "gradient-drag.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "rubberband.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "include/macros.h"
+
+#include "object/sp-namedview.h"
+#include "object/sp-stop.h"
+
+#include "display/control/canvas-item-curve.h"
+
+#include "svg/css-ostringstream.h"
+
+#include "ui/icon-names.h"
+#include "ui/tools/gradient-tool.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+
+GradientTool::GradientTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/gradient", "gradient.svg")
+    , cursor_addnode(false)
+    , node_added(false)
+// TODO: Why are these connections stored as pointers?
+    , selcon(nullptr)
+    , subselcon(nullptr)
+{
+    // TODO: This value is overwritten in the root handler
+    this->tolerance = 6;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/gradient/selcue", true)) {
+        this->enableSelectionCue();
+    }
+
+    this->enableGrDrag();
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    this->selcon = new sigc::connection(selection->connectChanged(
+       sigc::mem_fun(this, &GradientTool::selection_changed)
+    ));
+
+    subselcon = new sigc::connection(desktop->connect_gradient_stop_selected(
+        [=](void* sender, SPStop* stop) {
+          selection_changed(nullptr);
+          if (stop) {
+             // sync stop selection:
+            _grdrag->selectByStop(stop, false, true);
+          }
+        }
+    ));
+
+    this->selection_changed(selection);
+}
+
+GradientTool::~GradientTool() {
+    this->enableGrDrag(false);
+
+    this->selcon->disconnect();
+    delete this->selcon;
+
+    this->subselcon->disconnect();
+    delete this->subselcon;
+}
+
+// This must match GrPointType enum sp-gradient.h
+// We should move this to a shared header (can't simply move to gradient.h since that would require
+// including <glibmm/i18n.h> which messes up "N_" in extensions... argh!).
+const gchar *gr_handle_descr [] = {
+    N_("Linear gradient <b>start</b>"), //POINT_LG_BEGIN
+    N_("Linear gradient <b>end</b>"),
+    N_("Linear gradient <b>mid stop</b>"),
+    N_("Radial gradient <b>center</b>"),
+    N_("Radial gradient <b>radius</b>"),
+    N_("Radial gradient <b>radius</b>"),
+    N_("Radial gradient <b>focus</b>"), // POINT_RG_FOCUS
+    N_("Radial gradient <b>mid stop</b>"),
+    N_("Radial gradient <b>mid stop</b>"),
+    N_("Mesh gradient <b>corner</b>"),
+    N_("Mesh gradient <b>handle</b>"),
+    N_("Mesh gradient <b>tensor</b>")
+};
+
+void GradientTool::selection_changed(Inkscape::Selection*) {
+
+    GrDrag *drag = _grdrag;
+    Inkscape::Selection *selection = _desktop->getSelection();
+    if (selection == nullptr) {
+        return;
+    }
+    guint n_obj = (guint) boost::distance(selection->items());
+
+    if (!drag->isNonEmpty() || selection->isEmpty())
+        return;
+    guint n_tot = drag->numDraggers();
+    guint n_sel = drag->numSelected();
+
+    //The use of ngettext in the following code is intentional even if the English singular form would never be used
+    if (n_sel == 1) {
+        if (drag->singleSelectedDraggerNumDraggables() == 1) {
+            gchar * message = g_strconcat(
+                //TRANSLATORS: %s will be substituted with the point name (see previous messages); This is part of a compound message
+                _("%s selected"),
+                //TRANSLATORS: Mind the space in front. This is part of a compound message
+                ngettext(" out of %d gradient handle"," out of %d gradient handles",n_tot),
+                ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+            message_context->setF(Inkscape::NORMAL_MESSAGE,
+                                  message,_(gr_handle_descr[drag->singleSelectedDraggerSingleDraggableType()]), n_tot, n_obj);
+        } else {
+            gchar * message = g_strconcat(
+                //TRANSLATORS: This is a part of a compound message (out of two more indicating: grandint handle count & object count)
+                ngettext("One handle merging %d stop (drag with <b>Shift</b> to separate) selected",
+                         "One handle merging %d stops (drag with <b>Shift</b> to separate) selected",drag->singleSelectedDraggerNumDraggables()),
+                ngettext(" out of %d gradient handle"," out of %d gradient handles",n_tot),
+                ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+            message_context->setF(Inkscape::NORMAL_MESSAGE,message,drag->singleSelectedDraggerNumDraggables(), n_tot, n_obj);
+        }
+    } else if (n_sel > 1) {
+        //TRANSLATORS: The plural refers to number of selected gradient handles. This is part of a compound message (part two indicates selected object count)
+        gchar * message = g_strconcat(ngettext("<b>%d</b> gradient handle selected out of %d","<b>%d</b> gradient handles selected out of %d",n_sel),
+                                      //TRANSLATORS: Mind the space in front. (Refers to gradient handles selected). This is part of a compound message
+                                      ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+        message_context->setF(Inkscape::NORMAL_MESSAGE,message, n_sel, n_tot, n_obj);
+    } else if (n_sel == 0) {
+        message_context->setF(Inkscape::NORMAL_MESSAGE,
+                              //TRANSLATORS: The plural refers to number of selected objects
+                              ngettext("<b>No</b> gradient handles selected out of %d on %d selected object",
+                                       "<b>No</b> gradient handles selected out of %d on %d selected objects",n_obj), n_tot, n_obj);
+    }
+}
+
+void GradientTool::select_next()
+{
+    g_assert(_grdrag);
+    GrDragger *d = _grdrag->select_next();
+    _desktop->scroll_to_point(d->point, 1.0);
+}
+
+void GradientTool::select_prev()
+{
+    g_assert(_grdrag);
+    GrDragger *d = _grdrag->select_prev();
+    _desktop->scroll_to_point(d->point, 1.0);
+}
+
+SPItem *GradientTool::is_over_curve(Geom::Point event_p)
+{
+    //Translate mouse point into proper coord system: needed later.
+    mousepoint_doc = _desktop->w2d(event_p);
+
+    for (auto curve : _grdrag->item_curves) {
+        if (curve->contains(event_p, tolerance)) {
+            return curve->get_item();
+        }
+    }
+    return nullptr;
+}
+
+static std::vector<Geom::Point>
+sp_gradient_context_get_stop_intervals (GrDrag *drag, std::vector<SPStop *> &these_stops, std::vector<SPStop *> &next_stops)
+{
+    std::vector<Geom::Point> coords;
+
+    // for all selected draggers
+    for (std::set<GrDragger *>::const_iterator i = drag->selected.begin(); i != drag->selected.end() ; ++i ) {
+        GrDragger *dragger = *i;
+        // remember the coord of the dragger to reselect it later
+        coords.push_back(dragger->point);
+        // for all draggables of dragger
+        for (std::vector<GrDraggable *>::const_iterator j = dragger->draggables.begin(); j != dragger->draggables.end(); ++j) {
+            GrDraggable *d = *j;
+
+            // find the gradient
+            SPGradient *gradient = getGradient(d->item, d->fill_or_stroke);
+            SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false);
+
+            // these draggable types cannot have a next draggabe to insert a stop between them
+            if (d->point_type == POINT_LG_END ||
+                d->point_type == POINT_RG_FOCUS ||
+                d->point_type == POINT_RG_R1 ||
+                d->point_type == POINT_RG_R2) {
+                continue;
+            }
+
+            // from draggables to stops
+            SPStop *this_stop = sp_get_stop_i (vector, d->point_i);
+            SPStop *next_stop = this_stop->getNextStop();
+            SPStop *last_stop = sp_last_stop (vector);
+
+            Inkscape::PaintTarget fs = d->fill_or_stroke;
+            SPItem *item = d->item;
+            gint type = d->point_type;
+            gint p_i = d->point_i;
+
+            // if there's a next stop,
+            if (next_stop) {
+                GrDragger *dnext = nullptr;
+                // find its dragger
+                // (complex because it may have different types, and because in radial,
+                // more than one dragger may correspond to a stop, so we must distinguish)
+                if (type == POINT_LG_BEGIN || type == POINT_LG_MID) {
+                    if (next_stop == last_stop) {
+                        dnext = drag->getDraggerFor(item, POINT_LG_END, p_i+1, fs);
+                    } else {
+                        dnext = drag->getDraggerFor(item, POINT_LG_MID, p_i+1, fs);
+                    }
+                } else { // radial
+                    if (type == POINT_RG_CENTER || type == POINT_RG_MID1) {
+                        if (next_stop == last_stop) {
+                            dnext = drag->getDraggerFor(item, POINT_RG_R1, p_i+1, fs);
+                        } else {
+                            dnext = drag->getDraggerFor(item, POINT_RG_MID1, p_i+1, fs);
+                        }
+                    }
+                    if ((type == POINT_RG_MID2) ||
+                        (type == POINT_RG_CENTER && dnext && !dnext->isSelected())) {
+                        if (next_stop == last_stop) {
+                            dnext = drag->getDraggerFor(item, POINT_RG_R2, p_i+1, fs);
+                        } else {
+                            dnext = drag->getDraggerFor(item, POINT_RG_MID2, p_i+1, fs);
+                        }
+                    }
+                }
+
+                // if both adjacent draggers selected,
+                if ((std::find(these_stops.begin(),these_stops.end(),this_stop)==these_stops.end()) && dnext && dnext->isSelected()) {
+
+                    // remember the coords of the future dragger to select it
+                    coords.push_back(0.5*(dragger->point + dnext->point));
+
+                    // do not insert a stop now, it will confuse the loop;
+                    // just remember the stops
+                    these_stops.push_back(this_stop);
+                    next_stops.push_back(next_stop);
+                }
+            }
+        }
+    }
+    return coords;
+}
+
+void GradientTool::add_stops_between_selected_stops()
+{
+    SPDocument *doc = nullptr;
+    GrDrag *drag = _grdrag;
+
+    std::vector<SPStop *> these_stops;
+    std::vector<SPStop *> next_stops;
+
+    std::vector<Geom::Point> coords = sp_gradient_context_get_stop_intervals (drag, these_stops, next_stops);
+
+    if (these_stops.empty() && drag->numSelected() == 1) {
+        // if a single stop is selected, add between that stop and the next one
+        GrDragger *dragger = *(drag->selected.begin());
+        for (auto d : dragger->draggables) {
+            if (d->point_type == POINT_RG_FOCUS) {
+                /*
+                 *  There are 2 draggables at the center (start) of a radial gradient
+                 *  To avoid creating 2 separate stops, ignore this draggable point type
+                 */
+                continue;
+            }
+            SPGradient *gradient = getGradient(d->item, d->fill_or_stroke);
+            SPGradient *vector = sp_gradient_get_forked_vector_if_necessary (gradient, false);
+            SPStop *this_stop = sp_get_stop_i (vector, d->point_i);
+            if (this_stop) {
+                SPStop *next_stop = this_stop->getNextStop();
+                if (next_stop) {
+                    these_stops.push_back(this_stop);
+                    next_stops.push_back(next_stop);
+                }
+            }
+        }
+    }
+
+    // now actually create the new stops
+    auto i = these_stops.rbegin();
+    auto j = next_stops.rbegin();
+    std::vector<SPStop *> new_stops;
+
+    for (;i != these_stops.rend() && j != next_stops.rend(); ++i, ++j ) {
+        SPStop *this_stop = *i;
+        SPStop *next_stop = *j;
+        gfloat offset = 0.5*(this_stop->offset + next_stop->offset);
+        SPObject *parent = this_stop->parent;
+        if (SP_IS_GRADIENT (parent)) {
+            doc = parent->document;
+            SPStop *new_stop = sp_vector_add_stop (SP_GRADIENT (parent), this_stop, next_stop, offset);
+            new_stops.push_back(new_stop);
+            SP_GRADIENT(parent)->ensureVector();
+        }
+    }
+
+    if (!these_stops.empty() && doc) {
+        DocumentUndo::done(doc, _("Add gradient stop"), INKSCAPE_ICON("color-gradient"));
+        drag->updateDraggers();
+        // so that it does not automatically update draggers in idle loop, as this would deselect
+        drag->local_change = true;
+
+        // select the newly created stops
+        for (auto i:new_stops) {
+            drag->selectByStop(i);
+        }
+    }
+}
+
+static double sqr(double x) {return x*x;}
+
+/**
+ * Remove unnecessary stops in the adjacent currently selected stops
+ *
+ * For selected stops that are adjacent to each other, remove
+ * stops that don't change the gradient visually, within a range of tolerance.
+ *
+ * @param tolerance maximum difference between stop and expected color at that position
+ */
+void GradientTool::simplify(double tolerance)
+{
+    SPDocument *doc = nullptr;
+    GrDrag *drag = _grdrag;
+
+    std::vector<SPStop *> these_stops;
+    std::vector<SPStop *> next_stops;
+
+    std::vector<Geom::Point> coords = sp_gradient_context_get_stop_intervals (drag, these_stops, next_stops);
+
+    std::set<SPStop *> todel;
+
+    auto i = these_stops.begin();
+    auto j = next_stops.begin();
+    for (; i != these_stops.end() && j != next_stops.end(); ++i, ++j) {
+        SPStop *stop0 = *i;
+        SPStop *stop1 = *j;
+
+        // find the next adjacent stop if it exists and is in selection
+        auto i1 = std::find(these_stops.begin(), these_stops.end(), stop1);
+        if (i1 != these_stops.end()) {
+            if (next_stops.size()>(i1-these_stops.begin())) {
+                SPStop *stop2 = *(next_stops.begin() + (i1-these_stops.begin()));
+
+                if (todel.find(stop0)!=todel.end() || todel.find(stop2) != todel.end())
+                    continue;
+
+                // compare color of stop1 to the average color of stop0 and stop2
+                guint32 const c0 = stop0->get_rgba32();
+                guint32 const c2 = stop2->get_rgba32();
+                guint32 const c1r = stop1->get_rgba32();
+                guint32 c1 = average_color (c0, c2,
+                       (stop1->offset - stop0->offset) / (stop2->offset - stop0->offset));
+
+                double diff =
+                    sqr(SP_RGBA32_R_F(c1) - SP_RGBA32_R_F(c1r)) +
+                    sqr(SP_RGBA32_G_F(c1) - SP_RGBA32_G_F(c1r)) +
+                    sqr(SP_RGBA32_B_F(c1) - SP_RGBA32_B_F(c1r)) +
+                    sqr(SP_RGBA32_A_F(c1) - SP_RGBA32_A_F(c1r));
+
+                if (diff < tolerance)
+                    todel.insert(stop1);
+            }
+        }
+    }
+
+    for (auto stop : todel) {
+        doc = stop->document;
+        Inkscape::XML::Node * parent = stop->getRepr()->parent();
+        parent->removeChild( stop->getRepr() );
+    }
+
+    if (!todel.empty()) {
+        DocumentUndo::done(doc, _("Simplify gradient"), INKSCAPE_ICON("color-gradient"));
+        drag->local_change = true;
+        drag->updateDraggers();
+        drag->selectByCoords(coords);
+    }
+}
+
+void GradientTool::add_stop_near_point(SPItem *item, Geom::Point mouse_p, guint32 /*etime*/)
+{
+    // item is the selected item. mouse_p the location in doc coordinates of where to add the stop
+    SPStop *newstop = get_drag()->addStopNearPoint(item, mouse_p, tolerance / _desktop->current_zoom());
+
+    DocumentUndo::done(_desktop->getDocument(), _("Add gradient stop"), INKSCAPE_ICON("color-gradient"));
+
+    get_drag()->updateDraggers();
+    get_drag()->local_change = true;
+    get_drag()->selectByStop(newstop);
+}
+
+bool GradientTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    GrDrag *drag = this->_grdrag;
+    g_assert (drag);
+
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_2BUTTON_PRESS:
+        if ( event->button.button == 1 ) {
+            SPItem *item = is_over_curve(Geom::Point(event->motion.x, event->motion.y));
+            if (item) {
+                // we take the first item in selection, because with doubleclick, the first click
+                // always resets selection to the single object under cursor
+                add_stop_near_point(selection->items().front(), mousepoint_doc, event->button.time);
+            } else {
+               auto items= selection->items();
+                for (auto i = items.begin();i!=items.end();++i) {
+                    SPItem *item = *i;
+                    SPGradientType new_type = (SPGradientType) prefs->getInt("/tools/gradient/newgradient", SP_GRADIENT_TYPE_LINEAR);
+                    Inkscape::PaintTarget fsmode = (prefs->getInt("/tools/gradient/newfillorstroke", 1) != 0) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;
+
+                    SPGradient *vector = sp_gradient_vector_for_object(_desktop->getDocument(), _desktop, item, fsmode);
+
+                    SPGradient *priv = sp_item_set_gradient(item, vector, new_type, fsmode);
+                    sp_gradient_reset_to_userspace(priv, item);
+                }
+                _desktop->redrawDesktop();;
+                DocumentUndo::done(_desktop->getDocument(), _("Create default gradient"), INKSCAPE_ICON("color-gradient"));
+            }
+            ret = TRUE;
+        }
+        break;
+
+    case GDK_BUTTON_PRESS:
+        if ( event->button.button == 1 ) {
+            Geom::Point button_w(event->button.x, event->button.y);
+
+            // save drag origin
+            this->xp = (gint) button_w[Geom::X];
+            this->yp = (gint) button_w[Geom::Y];
+            this->within_tolerance = true;
+
+            dragging = true;
+
+            Geom::Point button_dt = _desktop->w2d(button_w);
+            if (event->button.state & GDK_SHIFT_MASK) {
+                Inkscape::Rubberband::get(_desktop)->start(_desktop, button_dt);
+            } else {
+                // remember clicked item, disregarding groups, honoring Alt; do nothing with Crtl to
+                // enable Ctrl+doubleclick of exactly the selected item(s)
+                if (!(event->button.state & GDK_CONTROL_MASK)) {
+                    this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
+                }
+
+                if (!selection->isEmpty()) {
+                    SnapManager &m = _desktop->namedview->snap_manager;
+                    m.setup(_desktop);
+                    m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                    m.unSetup();
+                }
+
+                this->origin = button_dt;
+            }
+
+            ret = TRUE;
+        }
+        break;
+
+    case GDK_MOTION_NOTIFY:
+        if (dragging && ( event->motion.state & GDK_BUTTON1_MASK )) {
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to draw, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            this->within_tolerance = false;
+
+            Geom::Point const motion_w(event->motion.x,
+                                     event->motion.y);
+            Geom::Point const motion_dt = _desktop->w2d(motion_w);
+
+            if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                Inkscape::Rubberband::get(_desktop)->move(motion_dt);
+                this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them"));
+            } else {
+                this->drag(motion_dt, event->motion.state, event->motion.time);
+            }
+
+            gobble_motion_events(GDK_BUTTON1_MASK);
+
+            ret = TRUE;
+        } else {
+            if (!drag->mouseOver() && !selection->isEmpty()) {
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const motion_dt = _desktop->w2d(motion_w);
+
+                m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE));
+                m.unSetup();
+            }
+
+            SPItem *item = is_over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+            if (this->cursor_addnode && !item) {
+                this->set_cursor("gradient.svg");
+                this->cursor_addnode = false;
+            } else if (!this->cursor_addnode && item) {
+                this->set_cursor("gradient-add.svg");
+                this->cursor_addnode = true;
+            }
+        }
+        break;
+
+    case GDK_BUTTON_RELEASE:
+        this->xp = this->yp = 0;
+
+        if ( event->button.button == 1 ) {
+            SPItem *item = is_over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+            if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) {
+                if (item) {
+                    this->add_stop_near_point(item, this->mousepoint_doc, 0);
+                    ret = TRUE;
+                }
+            } else {
+                dragging = false;
+
+                // unless clicked with Ctrl (to enable Ctrl+doubleclick).
+                if (event->button.state & GDK_CONTROL_MASK) {
+                    ret = TRUE;
+                    break;
+                }
+
+                if (!this->within_tolerance) {
+                    // we've been dragging, either do nothing (grdrag handles that),
+                    // or rubberband-select if we have rubberband
+                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+
+                    if (r->is_started() && !this->within_tolerance) {
+                        // this was a rubberband drag
+                        if (r->getMode() == RUBBERBAND_MODE_RECT) {
+                            Geom::OptRect const b = r->getRectangle();
+                            drag->selectRect(*b);
+                        }
+                    }
+                } else if (this->item_to_select) {
+                    if (item) {
+                        // Clicked on an existing gradient line, don't change selection. This stops
+                        // possible change in selection during a double click with overlapping objects
+                    } else {
+                        // no dragging, select clicked item if any
+                        if (event->button.state & GDK_SHIFT_MASK) {
+                            selection->toggle(this->item_to_select);
+                        } else {
+                            drag->deselectAll();
+                            selection->set(this->item_to_select);
+                        }
+                    }
+                } else {
+                    // click in an empty space; do the same as Esc
+                    if (!drag->selected.empty()) {
+                        drag->deselectAll();
+                    } else {
+                        selection->clear();
+                    }
+                }
+
+                this->item_to_select = nullptr;
+                ret = TRUE;
+            }
+
+            Inkscape::Rubberband::get(_desktop)->stop();
+        }
+        break;
+
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+        case GDK_KEY_Meta_R:
+            sp_event_show_modifier_tip (this->defaultMessageContext(), event,
+                                        _("<b>Ctrl</b>: snap gradient angle"),
+                                        _("<b>Shift</b>: draw gradient around the starting point"),
+                                        nullptr);
+            break;
+
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (MOD__ALT_ONLY(event)) {
+                _desktop->setToolboxFocusTo("altx-grad");
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_A:
+        case GDK_KEY_a:
+            if (MOD__CTRL_ONLY(event) && drag->isNonEmpty()) {
+                drag->selectAll();
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_L:
+        case GDK_KEY_l:
+            if (MOD__CTRL_ONLY(event) && drag->isNonEmpty() && drag->hasSelection()) {
+                this->simplify(1e-4);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+            if (!drag->selected.empty()) {
+                drag->deselectAll();
+            } else {
+                Inkscape::SelectionHelper::selectNone(_desktop);
+            }
+            ret = TRUE;
+            //TODO: make dragging escapable by Esc
+            break;
+
+        case GDK_KEY_r:
+        case GDK_KEY_R:
+            if (MOD__SHIFT_ONLY(event)) {
+                sp_gradient_reverse_selected_gradients(_desktop);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Insert:
+        case GDK_KEY_KP_Insert:
+            // with any modifiers:
+            this->add_stops_between_selected_stops();
+            ret = TRUE;
+            break;
+
+        case GDK_KEY_i:
+        case GDK_KEY_I:
+            if (MOD__SHIFT_ONLY(event)) {
+                // Shift+I - insert stops (alternate keybinding for keyboards
+                //           that don't have the Insert key)
+                this->add_stops_between_selected_stops();
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+        case GDK_KEY_BackSpace:
+            ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+            break;
+
+        case GDK_KEY_Tab:
+            if (hasGradientDrag()) {
+                select_next();
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_ISO_Left_Tab:
+            if (hasGradientDrag()) {
+                select_prev();
+                ret = TRUE;
+            }
+            break;
+
+        default:
+            ret = drag->key_press_handler(event);
+            break;
+        }
+        break;
+
+    case GDK_KEY_RELEASE:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+        case GDK_KEY_Meta_R:
+            this->defaultMessageContext()->clear();
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+       ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+// Creates a new linear or radial gradient.
+void GradientTool::drag(Geom::Point const pt, guint /*state*/, guint32 etime)
+{
+    Inkscape::Selection *selection = _desktop->getSelection();
+    SPDocument *document = _desktop->getDocument();
+
+    if (!selection->isEmpty()) {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        int type = prefs->getInt("/tools/gradient/newgradient", 1);
+        Inkscape::PaintTarget fill_or_stroke = (prefs->getInt("/tools/gradient/newfillorstroke", 1) != 0) ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;
+
+        SPGradient *vector;
+        if (item_to_select) {
+            // pick color from the object where drag started
+            vector = sp_gradient_vector_for_object(document, _desktop, item_to_select, fill_or_stroke);
+        } else {
+            // Starting from empty space:
+            // Sort items so that the topmost comes last
+           std::vector<SPItem*> items(selection->items().begin(), selection->items().end());
+            sort(items.begin(),items.end(),sp_item_repr_compare_position_bool);
+            // take topmost
+            vector = sp_gradient_vector_for_object(document, _desktop, items.back(), fill_or_stroke);
+        }
+
+        // HACK: reset fill-opacity - that 0.75 is annoying; BUT remove this when we have an opacity slider for all tabs
+        SPCSSAttr *css = sp_repr_css_attr_new();
+        sp_repr_css_set_property(css, "fill-opacity", "1.0");
+
+        auto itemlist = selection->items();
+        for (auto i = itemlist.begin();i!=itemlist.end();++i) {
+
+            //FIXME: see above
+            sp_repr_css_change_recursive((*i)->getRepr(), css, "style");
+
+            sp_item_set_gradient(*i, vector, (SPGradientType) type, fill_or_stroke);
+
+            if (type == SP_GRADIENT_TYPE_LINEAR) {
+                sp_item_gradient_set_coords(*i, POINT_LG_BEGIN, 0, origin, fill_or_stroke, true, false);
+                sp_item_gradient_set_coords (*i, POINT_LG_END, 0, pt, fill_or_stroke, true, false);
+            } else if (type == SP_GRADIENT_TYPE_RADIAL) {
+                sp_item_gradient_set_coords(*i, POINT_RG_CENTER, 0, origin, fill_or_stroke, true, false);
+                sp_item_gradient_set_coords (*i, POINT_RG_R1, 0, pt, fill_or_stroke, true, false);
+            }
+            (*i)->requestModified(SP_OBJECT_MODIFIED_FLAG);
+        }
+        if (_grdrag) {
+            _grdrag->updateDraggers();
+            // prevent regenerating draggers by selection modified signal, which sometimes
+            // comes too late and thus destroys the knot which we will now grab:
+            _grdrag->local_change = true;
+            // give the grab out-of-bounds values of xp/yp because we're already dragging
+            // and therefore are already out of tolerance
+            _grdrag->grabKnot (selection->items().front(),
+                                   type == SP_GRADIENT_TYPE_LINEAR? POINT_LG_END : POINT_RG_R1,
+                                   -1, // ignore number (though it is always 1)
+                                   fill_or_stroke, 99999, 99999, etime);
+        }
+        // We did an undoable action, but SPDocumentUndo::done will be called by the knot when released
+
+        // status text; we do not track coords because this branch is run once, not all the time
+        // during drag
+        int n_objects = (int) boost::distance(selection->items());
+        message_context->setF(Inkscape::NORMAL_MESSAGE,
+                                  ngettext("<b>Gradient</b> for %d object; with <b>Ctrl</b> to snap angle",
+                                           "<b>Gradient</b> for %d objects; with <b>Ctrl</b> to snap angle", n_objects),
+                                  n_objects);
+    } else {
+        _desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>objects</b> on which to create gradient."));
+    }
+}
+
+}
+}
+}
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/gradient-tool.h b/src/ui/tools/gradient-tool.h
new file mode 100644
index 0000000..6bd2972
--- /dev/null
+++ b/src/ui/tools/gradient-tool.h
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_GRADIENT_CONTEXT_H__
+#define __SP_GRADIENT_CONTEXT_H__
+
+/*
+ * Gradient drawing and editing tool
+ *
+ * Authors:
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
+ *   Jon A. Cruz <jon@joncruz.org.
+ *
+ * Copyright (C) 2007 Johan Engelen
+ * Copyright (C) 2005,2010 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+#include "ui/tools/tool-base.h"
+
+#define SP_GRADIENT_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::GradientTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_GRADIENT_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::GradientTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+class GrDrag;
+
+namespace Inkscape {
+
+class Selection;
+
+namespace UI {
+namespace Tools {
+
+class GradientTool : public ToolBase {
+public:
+    GradientTool(SPDesktop *desktop);
+    ~GradientTool() override;
+
+    bool root_handler(GdkEvent *event) override;
+    void add_stops_between_selected_stops();
+
+    void select_next();
+    void select_prev();
+
+private:
+    Geom::Point mousepoint_doc; // stores mousepoint when over_line in doc coords
+    Geom::Point origin;
+    bool cursor_addnode;
+    bool node_added;
+
+    sigc::connection *selcon;
+    sigc::connection *subselcon;
+
+    void selection_changed(Inkscape::Selection *);
+    void simplify(double tolerance);
+    void add_stop_near_point(SPItem *item, Geom::Point mouse_p, guint32 etime);
+    void drag(Geom::Point const pt, guint state, guint32 etime);
+    SPItem *is_over_curve(Geom::Point event_p);
+};
+
+}
+}
+}
+
+#endif
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/lpe-tool.cpp b/src/ui/tools/lpe-tool.cpp
new file mode 100644
index 0000000..efb7d35
--- /dev/null
+++ b/src/ui/tools/lpe-tool.cpp
@@ -0,0 +1,473 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * LPEToolContext: a context for a generic tool composed of subtools that are given by LPEs
+ *
+ * Authors:
+ *   Maximilian Albert <maximilian.albert@gmail.com>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2005 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2008 Maximilian Albert
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <iomanip>
+
+#include <glibmm/i18n.h>
+#include <gtk/gtk.h>
+
+#include <2geom/sbasis-geometric.h>
+
+#include "desktop.h"
+#include "document.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "selection.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-rect.h"
+#include "display/control/canvas-item-text.h"
+
+#include "object/sp-path.h"
+
+#include "util/units.h"
+
+#include "ui/toolbar/lpe-toolbar.h"
+#include "ui/tools/lpe-tool.h"
+#include "ui/shape-editor.h"
+
+using Inkscape::Util::unit_table;
+using Inkscape::UI::Tools::PenTool;
+
+const int num_subtools = 8;
+
+SubtoolEntry lpesubtools[] = {
+    // this must be here to account for the "all inactive" action
+    {Inkscape::LivePathEffect::INVALID_LPE, "draw-geometry-inactive"},
+    {Inkscape::LivePathEffect::LINE_SEGMENT, "draw-geometry-line-segment"},
+    {Inkscape::LivePathEffect::CIRCLE_3PTS, "draw-geometry-circle-from-three-points"},
+    {Inkscape::LivePathEffect::CIRCLE_WITH_RADIUS, "draw-geometry-circle-from-radius"},
+    {Inkscape::LivePathEffect::PARALLEL, "draw-geometry-line-parallel"},
+    {Inkscape::LivePathEffect::PERP_BISECTOR, "draw-geometry-line-perpendicular"},
+    {Inkscape::LivePathEffect::ANGLE_BISECTOR, "draw-geometry-angle-bisector"},
+    {Inkscape::LivePathEffect::MIRROR_SYMMETRY, "draw-geometry-mirror"}
+};
+
+namespace Inkscape::UI::Tools {
+
+void sp_lpetool_context_selection_changed(Inkscape::Selection *selection, gpointer data);
+
+LpeTool::LpeTool(SPDesktop *desktop)
+    : PenTool(desktop, "/tools/lpetool", "geometric.svg")
+    , mode(Inkscape::LivePathEffect::BEND_PATH)
+{
+    Inkscape::Selection *selection = desktop->getSelection();
+    SPItem *item = selection->singleItem();
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection =
+        selection->connectChanged(sigc::bind(sigc::ptr_fun(&sp_lpetool_context_selection_changed), (gpointer)this));
+
+    this->shape_editor = new ShapeEditor(desktop);
+
+    lpetool_context_switch_mode(this, Inkscape::LivePathEffect::INVALID_LPE);
+    lpetool_context_reset_limiting_bbox(this);
+    lpetool_create_measuring_items(this);
+
+// TODO temp force:
+    this->enableSelectionCue();
+    
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    if (prefs->getBool("/tools/lpetool/selcue")) {
+        this->enableSelectionCue();
+    }
+}
+
+LpeTool::~LpeTool()
+{
+    delete this->shape_editor;
+
+    if (canvas_bbox) {
+        delete canvas_bbox;
+    }
+
+    lpetool_delete_measuring_items(this);
+    measuring_items.clear();
+
+    this->sel_changed_connection.disconnect();
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new nodepath and reassigns listeners to the new selected item's repr.
+ */
+void sp_lpetool_context_selection_changed(Inkscape::Selection *selection, gpointer data)
+{
+    LpeTool *lc = SP_LPETOOL_CONTEXT(data);
+
+    lc->shape_editor->unset_item();
+    SPItem *item = selection->singleItem();
+    lc->shape_editor->set_item(item);
+}
+
+void LpeTool::set(const Inkscape::Preferences::Entry& val) {
+    if (val.getEntryName() == "mode") {
+        Inkscape::Preferences::get()->setString("/tools/geometric/mode", "drag");
+        SP_PEN_CONTEXT(this)->mode = PenTool::MODE_DRAG;
+    }
+}
+
+bool LpeTool::item_handler(SPItem* item, GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+        {
+            // select the clicked item but do nothing else
+            Inkscape::Selection *const selection = _desktop->getSelection();
+            selection->clear();
+            selection->add(item);
+            ret = TRUE;
+            break;
+        }
+        case GDK_BUTTON_RELEASE:
+            // TODO: do we need to catch this or can we pass it on to the parent handler?
+            ret = TRUE;
+            break;
+        default:
+            break;
+    }
+
+    if (!ret) {
+    	ret = PenTool::item_handler(item, event);
+    }
+
+    return ret;
+}
+
+bool LpeTool::root_handler(GdkEvent* event) {
+    Inkscape::Selection *selection = _desktop->getSelection();
+
+    bool ret = false;
+
+    if (this->hasWaitingLPE()) {
+        // quit when we are waiting for a LPE to be applied
+        //ret = ((ToolBaseClass *) sp_lpetool_context_parent_class)->root_handler(event_context, event);
+	return PenTool::root_handler(event);
+    }
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (this->mode == Inkscape::LivePathEffect::INVALID_LPE) {
+                    // don't do anything for now if we are inactive (except clearing the selection
+                    // since this was a click into empty space)
+                    selection->clear();
+                    _desktop->messageStack()->flash(Inkscape::WARNING_MESSAGE, _("Choose a construction tool from the toolbar."));
+                    ret = true;
+                    break;
+                }
+
+                // save drag origin
+                this->xp = (gint) event->button.x;
+                this->yp = (gint) event->button.y;
+                this->within_tolerance = true;
+
+                using namespace Inkscape::LivePathEffect;
+
+                Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+                int mode = prefs->getInt("/tools/lpetool/mode");
+                EffectType type = lpesubtools[mode].type;
+
+                //bool over_stroke = lc->shape_editor->is_over_stroke(Geom::Point(event->button.x, event->button.y), true);
+
+                this->waitForLPEMouseClicks(type, Inkscape::LivePathEffect::Effect::acceptsNumClicks(type));
+
+                // we pass the mouse click on to pen tool as the first click which it should collect
+                //ret = ((ToolBaseClass *) sp_lpetool_context_parent_class)->root_handler(event_context, event);
+		ret = PenTool::root_handler(event);
+            }
+            break;
+
+
+    case GDK_BUTTON_RELEASE:
+    {
+        /**
+        break;
+        **/
+    }
+
+    case GDK_KEY_PRESS:
+        /**
+        switch (get_latin_keyval (&event->key)) {
+        }
+        break;
+        **/
+
+    case GDK_KEY_RELEASE:
+        /**
+        switch (get_latin_keyval(&event->key)) {
+            case GDK_Control_L:
+            case GDK_Control_R:
+                dc->_message_context->clear();
+                break;
+            default:
+                break;
+        }
+        **/
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = PenTool::root_handler(event);
+    }
+
+    return ret;
+}
+
+/*
+ * Finds the index in the list of geometric subtools corresponding to the given LPE type.
+ * Returns -1 if no subtool is found.
+ */
+int
+lpetool_mode_to_index(Inkscape::LivePathEffect::EffectType const type) {
+    for (int i = 0; i < num_subtools; ++i) {
+        if (lpesubtools[i].type == type) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+/*
+ * Checks whether an item has a construction applied as LPE and if so returns the index in
+ * lpesubtools of this construction
+ */
+int lpetool_item_has_construction(LpeTool */*lc*/, SPItem *item)
+{
+    if (!SP_IS_LPE_ITEM(item)) {
+        return -1;
+    }
+
+    Inkscape::LivePathEffect::Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
+    if (!lpe) {
+        return -1;
+    }
+    return lpetool_mode_to_index(lpe->effectType());
+}
+
+/*
+ * Attempts to perform the construction of the given type (i.e., to apply the corresponding LPE) to
+ * a single selected item. Returns whether we succeeded.
+ */
+bool
+lpetool_try_construction(LpeTool *lc, Inkscape::LivePathEffect::EffectType const type)
+{
+    Inkscape::Selection *selection = lc->getDesktop()->getSelection();
+    SPItem *item = selection->singleItem();
+
+    // TODO: should we check whether type represents a valid geometric construction?
+    if (item && SP_IS_LPE_ITEM(item) && Inkscape::LivePathEffect::Effect::acceptsNumClicks(type) == 0) {
+        Inkscape::LivePathEffect::Effect::createAndApply(type, lc->getDesktop()->getDocument(), item);
+        return true;
+    }
+    return false;
+}
+
+void
+lpetool_context_switch_mode(LpeTool *lc, Inkscape::LivePathEffect::EffectType const type)
+{
+    int index = lpetool_mode_to_index(type);
+    if (index != -1) {
+        lc->mode = type;
+        auto tb = dynamic_cast<UI::Toolbar::LPEToolbar*>(lc->getDesktop()->get_toolbar_by_name("LPEToolToolbar"));
+
+        if(tb) {
+            tb->set_mode(index);
+        } else {
+            std::cerr << "Could not access LPE toolbar" << std::endl;
+        }
+    } else {
+        g_warning ("Invalid mode selected: %d", type);
+        return;
+    }
+}
+
+void
+lpetool_get_limiting_bbox_corners(SPDocument *document, Geom::Point &A, Geom::Point &B) {
+    Geom::Coord w = document->getWidth().value("px");
+    Geom::Coord h = document->getHeight().value("px");
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    double ulx = prefs->getDouble("/tools/lpetool/bbox_upperleftx", 0);
+    double uly = prefs->getDouble("/tools/lpetool/bbox_upperlefty", 0);
+    double lrx = prefs->getDouble("/tools/lpetool/bbox_lowerrightx", w);
+    double lry = prefs->getDouble("/tools/lpetool/bbox_lowerrighty", h);
+
+    A = Geom::Point(ulx, uly);
+    B = Geom::Point(lrx, lry);
+}
+
+/*
+ * Reads the limiting bounding box from preferences and draws it on the screen
+ */
+// TODO: Note that currently the bbox is not user-settable; we simply use the page borders
+void
+lpetool_context_reset_limiting_bbox(LpeTool *lc)
+{
+    if (lc->canvas_bbox) {
+        delete lc->canvas_bbox;
+        lc->canvas_bbox = nullptr;
+    }
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (!prefs->getBool("/tools/lpetool/show_bbox", true))
+        return;
+
+    SPDocument *document = lc->getDesktop()->getDocument();
+
+    Geom::Point A, B;
+    lpetool_get_limiting_bbox_corners(document, A, B);
+    Geom::Affine doc2dt(lc->getDesktop()->doc2dt());
+    A *= doc2dt;
+    B *= doc2dt;
+
+    Geom::Rect rect(A, B);
+    lc->canvas_bbox = new Inkscape::CanvasItemRect(lc->getDesktop()->getCanvasControls(), rect);
+    lc->canvas_bbox->set_stroke(0x0000ffff);
+    lc->canvas_bbox->set_dashed(true);
+}
+
+static void
+set_pos_and_anchor(Inkscape::CanvasItemText *canvas_text, const Geom::Piecewise<Geom::D2<Geom::SBasis> > &pwd2,
+                   const double t, const double length, bool /*use_curvature*/ = false)
+{
+    using namespace Geom;
+
+    Piecewise<D2<SBasis> > pwd2_reparam = arc_length_parametrization(pwd2, 2 , 0.1);
+    double t_reparam = pwd2_reparam.cuts.back() * t;
+    Point pos = pwd2_reparam.valueAt(t_reparam);
+    Point dir = unit_vector(derivative(pwd2_reparam).valueAt(t_reparam));
+    Point n = -rot90(dir);
+    double angle = Geom::angle_between(dir, Point(1,0));
+
+    canvas_text->set_coord(pos + n * length);
+    canvas_text->set_anchor(Geom::Point(std::sin(angle), -std::cos(angle)));
+}
+
+void
+lpetool_create_measuring_items(LpeTool *lc, Inkscape::Selection *selection)
+{
+    if (!selection) {
+        selection = lc->getDesktop()->getSelection();
+    }
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool show = prefs->getBool("/tools/lpetool/show_measuring_info",  true);
+
+    Inkscape::CanvasItemText *canvas_text;
+    Inkscape::CanvasItemGroup *tmpgrp = lc->getDesktop()->getCanvasTemp();
+
+    Inkscape::Util::Unit const * unit = nullptr;
+    if (prefs->getString("/tools/lpetool/unit").compare("")) {
+        unit = unit_table.getUnit(prefs->getString("/tools/lpetool/unit"));
+    } else {
+        unit = unit_table.getUnit("px");
+    }
+
+    auto items= selection->items();
+    for (auto i : items) {
+        SPPath *path = dynamic_cast<SPPath *>(i);
+        if (path) {
+            SPCurve const *curve = path->curve();
+            Geom::Piecewise<Geom::D2<Geom::SBasis> > pwd2 = paths_to_pw(curve->get_pathvector());
+
+            double lengthval = Geom::length(pwd2);
+            lengthval = Inkscape::Util::Quantity::convert(lengthval, "px", unit);
+
+            Glib::ustring arc_length = Glib::ustring::format(std::setprecision(2), std::fixed, lengthval);
+            arc_length += " ";
+            arc_length += unit->abbr;
+
+            canvas_text = new Inkscape::CanvasItemText(tmpgrp, Geom::Point(0,0), arc_length);
+            set_pos_and_anchor(canvas_text, pwd2, 0.5, 10);
+            if (!show) {
+                canvas_text->hide();
+            }
+
+            (lc->measuring_items)[path] = canvas_text;
+        }
+    }
+}
+
+void
+lpetool_delete_measuring_items(LpeTool *lc)
+{
+    for (auto& i : lc->measuring_items) {
+        delete i.second;
+    }
+    lc->measuring_items.clear();
+}
+
+void
+lpetool_update_measuring_items(LpeTool *lc)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Inkscape::Util::Unit const * unit = nullptr;
+    if (prefs->getString("/tools/lpetool/unit").compare("")) {
+        unit = unit_table.getUnit(prefs->getString("/tools/lpetool/unit"));
+    } else {
+        unit = unit_table.getUnit("px");
+    }
+
+    for (auto& i : lc->measuring_items) {
+
+        SPPath *path = i.first;
+        SPCurve const *curve = path->curve();
+        Geom::Piecewise<Geom::D2<Geom::SBasis> > pwd2 = Geom::paths_to_pw(curve->get_pathvector());
+        double lengthval = Geom::length(pwd2);
+        lengthval = Inkscape::Util::Quantity::convert(lengthval, "px", unit);
+
+        Glib::ustring arc_length = Glib::ustring::format(std::setprecision(2), std::fixed, lengthval);
+        arc_length += " ";
+        arc_length += unit->abbr;
+
+        i.second->set_text(arc_length);
+        set_pos_and_anchor(i.second, pwd2, 0.5, 10);
+    }
+}
+
+void
+lpetool_show_measuring_info(LpeTool *lc, bool show)
+{
+    for (auto& i : lc->measuring_items) {
+        if (show) {
+            i.second->show();
+        } else {
+            i.second->hide();
+        }
+    }
+}
+
+} // namespace Inkscape::UI::Tools
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/lpe-tool.h b/src/ui/tools/lpe-tool.h
new file mode 100644
index 0000000..fd77a13
--- /dev/null
+++ b/src/ui/tools/lpe-tool.h
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SP_LPETOOL_CONTEXT_H_SEEN
+#define SP_LPETOOL_CONTEXT_H_SEEN
+
+/*
+ * LPEToolContext: a context for a generic tool composed of subtools that are given by LPEs
+ *
+ * Authors:
+ *   Maximilian Albert <maximilian.albert@gmail.com>
+ *
+ * Copyright (C) 1998 The Free Software Foundation
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ * Copyright (C) 2008 Maximilian Albert
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/pen-tool.h"
+
+#define SP_LPETOOL_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::LpeTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_LPETOOL_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::LpeTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+/* This is the list of subtools from which the toolbar of the LPETool is built automatically */
+extern const int num_subtools;
+
+struct SubtoolEntry {
+    Inkscape::LivePathEffect::EffectType type;
+    gchar const *icon_name;
+};
+
+extern SubtoolEntry lpesubtools[];
+
+enum LPEToolState {
+    LPETOOL_STATE_PEN,
+    LPETOOL_STATE_NODE
+};
+
+namespace Inkscape {
+class Selection;
+}
+
+class ShapeEditor;
+
+namespace Inkscape {
+
+class CanvasItemText;
+class CanvasItemRect;
+
+namespace UI {
+namespace Tools {
+
+class LpeTool : public PenTool {
+public:
+    LpeTool(SPDesktop *desktop);
+    ~LpeTool() override;
+
+    ShapeEditor* shape_editor = nullptr;
+    Inkscape::CanvasItemRect *canvas_bbox = nullptr;
+    Inkscape::LivePathEffect::EffectType mode;
+
+    std::map<SPPath *, Inkscape::CanvasItemText*> measuring_items;
+
+    sigc::connection sel_changed_connection;
+    sigc::connection sel_modified_connection;
+protected:
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    bool item_handler(SPItem* item, GdkEvent* event) override;
+};
+
+int lpetool_mode_to_index(Inkscape::LivePathEffect::EffectType const type);
+int lpetool_item_has_construction(LpeTool *lc, SPItem *item);
+bool lpetool_try_construction(LpeTool *lc, Inkscape::LivePathEffect::EffectType const type);
+void lpetool_context_switch_mode(LpeTool *lc, Inkscape::LivePathEffect::EffectType const type);
+void lpetool_get_limiting_bbox_corners(SPDocument *document, Geom::Point &A, Geom::Point &B);
+void lpetool_context_reset_limiting_bbox(LpeTool *lc);
+void lpetool_create_measuring_items(LpeTool *lc, Inkscape::Selection *selection = nullptr);
+void lpetool_delete_measuring_items(LpeTool *lc);
+void lpetool_update_measuring_items(LpeTool *lc);
+void lpetool_show_measuring_info(LpeTool *lc, bool show = true);
+
+}
+}
+}
+
+#endif // SP_LPETOOL_CONTEXT_H_SEEN
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/marker-tool.cpp b/src/ui/tools/marker-tool.cpp
new file mode 100644
index 0000000..e2e2631
--- /dev/null
+++ b/src/ui/tools/marker-tool.cpp
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Marker edit mode - onCanvas marker editing of marker orientation, position, scale
+ *//*
+ * Authors:
+ * see git history
+ * Rachana Podaralla <rpodaralla3@gatech.edu>
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "display/curve.h"
+
+#include "desktop.h"
+#include "document.h"
+#include "style.h"
+#include "message-context.h"
+#include "selection.h"
+
+#include "object/sp-path.h"
+#include "object/sp-shape.h"
+#include "object/sp-marker.h"
+
+#include "ui/shape-editor.h"
+#include "ui/tool/event-utils.h"
+#include "ui/tool/multi-path-manipulator.h"
+#include "ui/tool/path-manipulator.h"
+#include "ui/tools/marker-tool.h"
+
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+MarkerTool::MarkerTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/marker", "select.svg")
+{
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection = selection->connectChanged(
+    	sigc::mem_fun(this, &MarkerTool::selection_changed)
+    );
+    this->selection_changed(selection);
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/marker/selcue")) this->enableSelectionCue();
+    if (prefs->getBool("/tools/marker/gradientdrag")) this->enableGrDrag();
+}
+
+MarkerTool::~MarkerTool()
+{
+    ungrabCanvasEvents();
+
+    this->message_context->clear();
+    this->_shape_editors.clear();
+
+    this->enableGrDrag(false);
+    this->sel_changed_connection.disconnect();
+}
+
+/*
+- cycles through all the selected items to see if any have a marker in the right location (based on enterMarkerMode)
+- if a matching item is found, loads the corresponding marker on the shape into the shape-editor and exits the loop
+- forces user to only edit one marker at a time
+*/
+void MarkerTool::selection_changed(Inkscape::Selection *selection) {
+    using namespace Inkscape::UI;
+
+    g_assert(_desktop != nullptr);
+
+    SPDocument *doc = _desktop->getDocument();
+    g_assert(doc != nullptr);
+
+    auto selected_items = selection->items();
+    this->_shape_editors.clear();
+
+    for(auto i = selected_items.begin(); i != selected_items.end(); ++i){
+        SPItem *item = *i;
+
+        if(item) {
+            SPShape* shape = dynamic_cast<SPShape*>(item);
+
+            if(shape && shape->hasMarkers() && (editMarkerMode != -1)) {
+                SPObject *obj = shape->_marker[editMarkerMode];
+
+                if(obj) {
+
+                    SPMarker *sp_marker = dynamic_cast<SPMarker *>(obj);
+                    g_assert(sp_marker != nullptr);
+
+                    sp_validate_marker(sp_marker, doc);
+
+                    ShapeRecord sr;
+                    switch(editMarkerMode) {
+                        case SP_MARKER_LOC_START:
+                            sr  = get_marker_transform(shape, item, sp_marker, SP_MARKER_LOC_START);
+                            break;
+
+                        case SP_MARKER_LOC_MID:
+                            sr  = get_marker_transform(shape, item, sp_marker, SP_MARKER_LOC_MID);
+                            break;
+
+                        case SP_MARKER_LOC_END:
+                            sr  = get_marker_transform(shape, item, sp_marker, SP_MARKER_LOC_END);
+                            break;
+
+                        default:
+                            break;
+                    }
+
+                    auto si = std::make_unique<ShapeEditor>(_desktop, sr.edit_transform, sr.edit_rotation, editMarkerMode);
+                    si->set_item(dynamic_cast<SPItem *>(sr.object));
+
+                    this->_shape_editors.insert({item, std::move(si)});
+                    break;                     
+                }
+            }
+        }
+    }
+}
+
+// handles selection of new items
+bool MarkerTool::root_handler(GdkEvent* event) {
+    g_assert(_desktop != nullptr);
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    gint ret = false;
+    
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+
+                Geom::Point const button_w(event->button.x, event->button.y);  
+                this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
+
+                grabCanvasEvents();
+                ret = true;
+            }
+            break;
+        case GDK_BUTTON_RELEASE:
+            if (event->button.button == 1) {
+
+                if (this->item_to_select) {
+                    // unselect all items, except for newly selected item
+                    selection->set(this->item_to_select);
+                } else {
+                    // clicked into empty space, deselect any selected items
+                    selection->clear();
+                }
+
+                this->item_to_select = nullptr;
+                ungrabCanvasEvents();
+                ret = true;
+            }
+            break;
+        default:
+            break;
+    }
+
+    return (!ret? ToolBase::root_handler(event): ret);
+}
+
+/* 
+- this function uses similar logic that exists in sp_shape_update_marker_view
+- however, the tangent angle needs to be saved here and parent_item->i2dt_affine() needs to also be accounted for in the right places
+- calculate where the shape-editor knotholders need to go based on the reference shape
+*/
+ShapeRecord MarkerTool::get_marker_transform(SPShape* shape, SPItem *parent_item, SPMarker *sp_marker, SPMarkerLoc marker_type)
+{
+
+    // scale marker transform with parent stroke width
+    SPStyle *style = shape->style;
+    SPDocument *doc = _desktop->getDocument();
+    Geom::Scale scale = doc->getDocumentScale();
+
+    if(sp_marker->markerUnits == SP_MARKER_UNITS_STROKEWIDTH) {
+        scale *= Geom::Scale(style->stroke_width.computed);
+    }
+
+    Geom::PathVector const &pathv = shape->curve()->get_pathvector();
+    Geom::Affine ret = Geom::identity(); //edit_transform
+    double angle = 0.0; // edit_rotation - tangent angle used for auto orientation
+    Geom::Point p;
+    
+    if(marker_type == SP_MARKER_LOC_START) {
+
+        Geom::Curve const &c = pathv.begin()->front();
+        p = c.pointAt(0);
+        ret = Geom::Translate(p * parent_item->i2doc_affine());
+
+        if (!c.isDegenerate()) {
+            Geom::Point tang = c.unitTangentAt(0);
+            angle = Geom::atan2(tang);
+            ret = Geom::Rotate(angle) * ret;
+        }
+
+    } else if(marker_type == SP_MARKER_LOC_MID) {
+        /* 
+        - a shape can have multiple mid markers - only one is needed
+        - once a valid mid marker is found, save edit_transfom and edit_rotation and break out of loop
+        */
+        for(Geom::PathVector::const_iterator path_it = pathv.begin(); path_it != pathv.end(); ++path_it) {
+
+            // mid marker start position
+            if (path_it != pathv.begin() && ! ((path_it == (pathv.end()-1)) && (path_it->size_default() == 0)))
+            {
+                Geom::Curve const &c = path_it->front();
+                p = c.pointAt(0);
+                ret = Geom::Translate(p * parent_item->i2doc_affine());
+
+                if (!c.isDegenerate()) {
+                    Geom::Point tang = c.unitTangentAt(0);
+                    angle = Geom::atan2(tang);
+                    ret = Geom::Rotate(angle) * ret;
+                    break;
+                }
+            }
+
+            // mid marker mid positions
+            if ( path_it->size_default() > 1) {
+                Geom::Path::const_iterator curve_it1 = path_it->begin();
+                Geom::Path::const_iterator curve_it2 = ++(path_it->begin());
+                while (curve_it2 != path_it->end_default())
+                {
+                    Geom::Curve const & c1 = *curve_it1;
+                    Geom::Curve const & c2 = *curve_it2;
+
+                    p = c1.pointAt(1);
+                    Geom::Curve * c1_reverse = c1.reverse();
+                    Geom::Point tang1 = - c1_reverse->unitTangentAt(0);
+                    delete c1_reverse;
+                    Geom::Point tang2 = c2.unitTangentAt(0);
+
+                    double const angle1 = Geom::atan2(tang1);
+                    double const angle2 = Geom::atan2(tang2);
+
+                    angle = .5 * (angle1 + angle2);
+
+                    if ( fabs( angle2 - angle1 ) > M_PI ) {
+                        angle += M_PI;
+                    }
+
+                    ret = Geom::Rotate(angle) * Geom::Translate(p * parent_item->i2doc_affine());
+
+                    ++curve_it1;
+                    ++curve_it2;
+                    break;
+                }
+            }
+
+            // mid marker end position
+            if ( path_it != (pathv.end()-1) && !path_it->empty()) {
+                Geom::Curve const &c = path_it->back_default();
+                p = c.pointAt(1);
+                ret = Geom::Translate(p * parent_item->i2doc_affine());
+
+                if ( !c.isDegenerate() ) {
+                    Geom::Curve * c_reverse = c.reverse();
+                    Geom::Point tang = - c_reverse->unitTangentAt(0);
+                    delete c_reverse;
+                    angle = Geom::atan2(tang);
+                    ret = Geom::Rotate(angle) * ret;
+                    break;
+                } 
+            }
+        }
+
+    } else if (marker_type == SP_MARKER_LOC_END) {
+
+        Geom::Path const &path_last = pathv.back();
+        unsigned int index = path_last.size_default();
+        if (index > 0) index--;
+
+        Geom::Curve const &c = path_last[index];
+        p = c.pointAt(1);
+        ret = Geom::Translate(p * parent_item->i2doc_affine());
+
+        if ( !c.isDegenerate() ) {
+            Geom::Curve * c_reverse = c.reverse();
+            Geom::Point tang = - c_reverse->unitTangentAt(0);
+            delete c_reverse;
+            angle = Geom::atan2(tang);
+            ret = Geom::Rotate(angle) * ret;
+        } 
+    }
+
+    /* scale by stroke width */
+    ret = scale * ret;
+    /* account for parent transform */
+    ret = parent_item->transform.withoutTranslation() * ret;
+
+    ShapeRecord sr;
+    sr.object = sp_marker;
+    sr.edit_transform = ret;
+    sr.edit_rotation = angle * 180.0/M_PI;
+    sr.role = SHAPE_ROLE_NORMAL;
+    return sr;
+}
+
+}}}
diff --git a/src/ui/tools/marker-tool.h b/src/ui/tools/marker-tool.h
new file mode 100644
index 0000000..92d77a2
--- /dev/null
+++ b/src/ui/tools/marker-tool.h
@@ -0,0 +1,50 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * Marker edit mode - onCanvas marker editing of marker orientation, position, scale
+ *//*
+ * Authors:
+ * see git history
+ * Rachana Podaralla <rpodaralla3@gatech.edu>
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef __SP_MARKER_CONTEXT_H__
+#define __SP_MARKER_CONTEXT_H__
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+#include <2geom/point.h>
+
+#include "object/sp-marker.h"
+#include "object/sp-marker-loc.h"
+
+#include "ui/tools/tool-base.h"
+#include "ui/tool/shape-record.h"
+
+namespace Inkscape {
+class Selection;
+namespace UI {
+namespace Tools {
+
+class MarkerTool : public ToolBase {
+public:
+    MarkerTool(SPDesktop *desktop);
+    ~MarkerTool() override;
+
+    void selection_changed(Inkscape::Selection *selection);
+
+    bool root_handler(GdkEvent *event) override;
+    std::map<SPItem *, std::unique_ptr<ShapeEditor>> _shape_editors;
+
+    int editMarkerMode = -1;
+
+private:
+    sigc::connection sel_changed_connection;
+    ShapeRecord get_marker_transform(SPShape *shape, SPItem *parent_item, SPMarker *sp_marker, SPMarkerLoc marker_type);
+};
+
+}}}
+
+#endif
diff --git a/src/ui/tools/measure-tool.cpp b/src/ui/tools/measure-tool.cpp
new file mode 100644
index 0000000..d9ba7b1
--- /dev/null
+++ b/src/ui/tools/measure-tool.cpp
@@ -0,0 +1,1470 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Our nice measuring tool
+ *
+ * Authors:
+ *   Felipe Correa da Silva Sanches <juca@members.fsf.org>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Jabiertxo Arraiza <jabier.arraiza@marker.es>
+ *
+ * Copyright (C) 2011 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "measure-tool.h"
+
+#include <iomanip>
+
+#include <gtkmm.h>
+#include <glibmm/i18n.h>
+
+#include <boost/none_t.hpp>
+
+#include <2geom/line.h>
+#include <2geom/path-intersection.h>
+
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "inkscape.h"
+#include "layer-manager.h"
+#include "path-chemistry.h"
+#include "rubberband.h"
+#include "text-editing.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-curve.h"
+#include "display/control/canvas-item-ctrl.h"
+#include "display/control/canvas-item-group.h"
+#include "display/control/canvas-item-text.h"
+
+#include "object/sp-defs.h"
+#include "object/sp-flowtext.h"
+#include "object/sp-namedview.h"
+#include "object/sp-root.h"
+#include "object/sp-shape.h"
+#include "object/sp-text.h"
+
+#include "svg/stringstream.h"
+#include "svg/svg-color.h"
+#include "svg/svg.h"
+
+#include "ui/dialog/knot-properties.h"
+#include "ui/icon-names.h"
+#include "ui/knot/knot.h"
+#include "ui/tools/freehand-base.h"
+#include "ui/widget/canvas.h" // Canvas area
+
+#include "util/units.h"
+
+using Inkscape::Util::unit_table;
+using Inkscape::DocumentUndo;
+
+const guint32 MT_KNOT_COLOR_NORMAL = 0xffffff00;
+const guint32 MT_KNOT_COLOR_MOUSEOVER = 0xff000000;
+
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+namespace {
+
+/**
+ * Simple class to use for removing label overlap.
+ */
+class LabelPlacement {
+public:
+
+    double lengthVal;
+    double offset;
+    Geom::Point start;
+    Geom::Point end;
+};
+
+bool SortLabelPlacement(LabelPlacement const &first, LabelPlacement const &second)
+{
+    if (first.end[Geom::Y] == second.end[Geom::Y]) {
+        return first.end[Geom::X] < second.end[Geom::X];
+    } else {
+        return first.end[Geom::Y] < second.end[Geom::Y];
+    }
+}
+
+//precision is for give the number of decimal positions
+//of the label to calculate label width
+void repositionOverlappingLabels(std::vector<LabelPlacement> &placements, SPDesktop *desktop, Geom::Point const &normal, double fontsize, int precision)
+{
+    std::sort(placements.begin(), placements.end(), SortLabelPlacement);
+
+    double border = 3;
+    Geom::Rect box;
+    {
+        Geom::Point tmp(fontsize * (6 + precision) + (border * 2), fontsize + (border * 2));
+        tmp = desktop->w2d(tmp);
+        box = Geom::Rect(-tmp[Geom::X] / 2, -tmp[Geom::Y] / 2, tmp[Geom::X] / 2, tmp[Geom::Y] / 2);
+    }
+
+    // Using index since vector may be re-ordered as we go.
+    // Starting at one, since the first item can't overlap itself
+    for (size_t i = 1; i < placements.size(); i++) {
+        LabelPlacement &place = placements[i];
+
+        bool changed = false;
+        do {
+            Geom::Rect current(box + place.end);
+
+            changed = false;
+            bool overlaps = false;
+            for (size_t j = i; (j > 0) && !overlaps; --j) {
+                LabelPlacement &otherPlace = placements[j - 1];
+                Geom::Rect target(box + otherPlace.end);
+                if (current.intersects(target)) {
+                    overlaps = true;
+                }
+            }
+            if (overlaps) {
+                place.offset += (fontsize + border);
+                place.end = place.start - desktop->w2d(normal * place.offset);
+                changed = true;
+            }
+        } while (changed);
+
+        std::sort(placements.begin(), placements.begin() + i + 1, SortLabelPlacement);
+    }
+}
+
+/**
+ * Calculates where to place the anchor for the display text and arc.
+ *
+ * @param desktop the desktop that is being used.
+ * @param angle the angle to be displaying.
+ * @param baseAngle the angle of the initial baseline.
+ * @param startPoint the point that is the vertex of the selected angle.
+ * @param endPoint the point that is the end the user is manipulating for measurement.
+ * @param fontsize the size to display the text label at.
+ */
+Geom::Point calcAngleDisplayAnchor(SPDesktop *desktop, double angle, double baseAngle,
+                                   Geom::Point const &startPoint, Geom::Point const &endPoint,
+                                   double fontsize)
+{
+    // Time for the trick work of figuring out where things should go, and how.
+    double lengthVal = (endPoint - startPoint).length();
+    double effective = baseAngle + (angle / 2);
+    Geom::Point where(lengthVal, 0);
+    where *= Geom::Affine(Geom::Rotate(effective)) * Geom::Affine(Geom::Translate(startPoint));
+
+    // When the angle is tight, the label would end up under the cursor and/or lines. Bump it
+    double scaledFontsize = std::abs(fontsize * desktop->w2d(Geom::Point(0, 1.0))[Geom::Y]);
+    if (std::abs((where - endPoint).length()) < scaledFontsize) {
+        where[Geom::Y] += scaledFontsize * 2;
+    }
+
+    // We now have the ideal position, but need to see if it will fit/work.
+
+    Geom::Rect screen_world = desktop->getCanvas()->get_area_world();
+    if (screen_world.interiorContains(desktop->d2w(startPoint)) ||
+        screen_world.interiorContains(desktop->d2w(endPoint))) {
+        screen_world.expandBy(fontsize * -3, fontsize / -2);
+        where = desktop->w2d(screen_world.clamp(desktop->d2w(where)));
+    } // else likely initialized the measurement tool, keep display near the measurement.
+
+    return where;
+}
+
+} // namespace
+
+/**
+ * Given an angle, the arc center and edge point, draw an arc segment centered around that edge point.
+ *
+ * @param desktop the desktop that is being used.
+ * @param center the center point for the arc.
+ * @param end the point that ends at the edge of the arc segment.
+ * @param anchor the anchor point for displaying the text label.
+ * @param angle the angle of the arc segment to draw.
+ * @param measure_rpr the container of the curve if converted to items.
+ *
+ */
+void MeasureTool::createAngleDisplayCurve(Geom::Point const &center, Geom::Point const &end, Geom::Point const &anchor,
+                                          double angle, bool to_phantom,
+                                          std::vector<Inkscape::CanvasItem *> &measure_phantom_items,
+                                          std::vector<Inkscape::CanvasItem *> &measure_tmp_items,
+                                          Inkscape::XML::Node *measure_repr)
+{
+    // Given that we have a point on the arc's edge and the angle of the arc, we need to get the two endpoints.
+
+    double textLen = std::abs((anchor - center).length());
+    double sideLen = std::abs((end - center).length());
+    if (sideLen > 0.0) {
+        double factor = std::min(1.0, textLen / sideLen);
+
+        // arc start
+        Geom::Point p1 = end * (Geom::Affine(Geom::Translate(-center))
+                                * Geom::Affine(Geom::Scale(factor))
+                                * Geom::Affine(Geom::Translate(center)));
+
+        // arc end
+        Geom::Point p4 = p1 * (Geom::Affine(Geom::Translate(-center))
+                               * Geom::Affine(Geom::Rotate(-angle))
+                               * Geom::Affine(Geom::Translate(center)));
+
+        // from Riskus
+        double xc = center[Geom::X];
+        double yc = center[Geom::Y];
+        double ax = p1[Geom::X] - xc;
+        double ay = p1[Geom::Y] - yc;
+        double bx = p4[Geom::X] - xc;
+        double by = p4[Geom::Y] - yc;
+        double q1 = (ax * ax) + (ay * ay);
+        double q2 = q1 + (ax * bx) + (ay * by);
+
+        double k2;
+
+        /*
+         * The denominator of the expression for k2 can become 0, so this should be handled.
+         * The function for k2 tends to a limit for very small values of (ax * by) - (ay * bx), so theoretically
+         * it should be correct for values close to 0, however due to floating point inaccuracies this
+         * is not the case, and instabilities still exist. Therefore do a range check on the denominator.
+         * (This also solves some instances where again due to floating point inaccuracies, the square root term
+         * becomes slightly negative in case of very small values for ax * by - ay * bx).
+         * The values of this range have been generated by trying to make this term as small as possible,
+         * by zooming in as much as possible in the GUI, using the measurement tool and
+         * trying to get as close to 180 or 0 degrees as possible.
+         * Smallest value I was able to get was around 1e-5, and then I added some zeroes for good measure.
+         */
+        if (!((ax * by - ay * bx < 0.00000000001) && (ax * by - ay * bx > -0.00000000001))) {
+            k2 = (4.0 / 3.0) * (std::sqrt(2 * q1 * q2) - q2) / ((ax * by) - (ay * bx));
+        } else {
+            // If the denominator is 0, there are 2 cases:
+            // Either the angle is (almost) +-180 degrees, in which case the limit of k2 tends to -+4.0/3.0.
+            if (angle > 3.14 || angle < -3.14) { // The angle is in radians
+                // Now there are also 2 cases, where inkscape thinks it is 180 degrees, or -180 degrees.
+                // Adjust the value of k2 accordingly
+                if (angle > 0) {
+                    k2 = -4.0 / 3.0;
+                } else {
+                    k2 = 4.0 / 3.0;
+                }
+            } else {
+                // if the angle is (almost) 0, k2 is equal to 0
+                k2 = 0.0;
+            }
+        }
+
+        Geom::Point p2(xc + ax - (k2 * ay),
+                       yc + ay  + (k2 * ax));
+        Geom::Point p3(xc + bx + (k2 * by),
+                       yc + by - (k2 * bx));
+
+        auto *curve = new Inkscape::CanvasItemCurve(_desktop->getCanvasTemp(), p1, p2, p3, p4);
+        curve->set_name("CanvasItemCurve:MeasureToolCurve");
+        curve->set_stroke(Inkscape::CANVAS_ITEM_SECONDARY);
+        curve->set_z_position(0);
+        curve->show();
+        if(to_phantom){
+            curve->set_stroke(0x8888887f);
+            measure_phantom_items.emplace_back(curve);
+        } else {
+            measure_tmp_items.emplace_back(curve);
+        }
+
+        if(measure_repr) {
+            Geom::PathVector pathv;
+            Geom::Path path;
+            path.start(_desktop->doc2dt(p1));
+            path.appendNew<Geom::CubicBezier>(_desktop->doc2dt(p2), _desktop->doc2dt(p3), _desktop->doc2dt(p4));
+            pathv.push_back(path);
+            auto layer = _desktop->layerManager().currentLayer();
+            pathv *= layer->i2doc_affine().inverse();
+            if(!pathv.empty()) {
+                setMeasureItem(pathv, true, false, 0xff00007f, measure_repr);
+            }
+        }
+    }
+}
+
+std::optional<Geom::Point> explicit_base_tmp = std::nullopt;
+
+MeasureTool::MeasureTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/measure", "measure.svg")
+{
+    start_p = readMeasurePoint(true);
+    end_p = readMeasurePoint(false);
+
+    // create the knots
+    this->knot_start = new SPKnot(desktop, _("Measure start, <b>Shift+Click</b> for position dialog"),
+                                  Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "CanvasItemCtrl:MeasureTool");
+    this->knot_start->setMode(Inkscape::CANVAS_ITEM_CTRL_MODE_XOR);
+    this->knot_start->setFill(MT_KNOT_COLOR_NORMAL, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER);
+    this->knot_start->setStroke(0x0000007f, 0x0000007f, 0x0000007f, 0x0000007f);
+    this->knot_start->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_CIRCLE);
+    this->knot_start->updateCtrl();
+    this->knot_start->moveto(start_p);
+    this->knot_start->show();
+
+    this->knot_end = new SPKnot(desktop, _("Measure end, <b>Shift+Click</b> for position dialog"),
+                                Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "CanvasItemCtrl:MeasureTool");
+    this->knot_end->setMode(Inkscape::CANVAS_ITEM_CTRL_MODE_XOR);
+    this->knot_end->setFill(MT_KNOT_COLOR_NORMAL, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER, MT_KNOT_COLOR_MOUSEOVER);
+    this->knot_end->setStroke(0x0000007f, 0x0000007f, 0x0000007f, 0x0000007f);
+    this->knot_end->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_CIRCLE);
+    this->knot_end->updateCtrl();
+    this->knot_end->moveto(end_p);
+    this->knot_end->show();
+
+    showCanvasItems();
+
+    this->_knot_start_moved_connection = this->knot_start->moved_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotStartMovedHandler));
+    this->_knot_start_click_connection = this->knot_start->click_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotClickHandler));
+    this->_knot_start_ungrabbed_connection = this->knot_start->ungrabbed_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotUngrabbedHandler));
+    this->_knot_end_moved_connection = this->knot_end->moved_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotEndMovedHandler));
+    this->_knot_end_click_connection = this->knot_end->click_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotClickHandler));
+    this->_knot_end_ungrabbed_connection = this->knot_end->ungrabbed_signal.connect(sigc::mem_fun(*this, &MeasureTool::knotUngrabbedHandler));
+
+}
+
+MeasureTool::~MeasureTool()
+{
+    this->enableGrDrag(false);
+    ungrabCanvasEvents();
+
+    this->_knot_start_moved_connection.disconnect();
+    this->_knot_start_ungrabbed_connection.disconnect();
+    this->_knot_end_moved_connection.disconnect();
+    this->_knot_end_ungrabbed_connection.disconnect();
+
+    /* unref should call destroy */
+    knot_unref(this->knot_start);
+    knot_unref(this->knot_end);
+
+    for (auto & measure_tmp_item : measure_tmp_items) {
+        delete measure_tmp_item;
+    }
+    measure_tmp_items.clear();
+
+    for (auto & idx : measure_item) {
+        delete idx;
+    }
+    measure_item.clear();
+
+    for (auto & measure_phantom_item : measure_phantom_items) {
+        delete measure_phantom_item;
+    }
+    measure_phantom_items.clear();
+}
+
+Geom::Point MeasureTool::readMeasurePoint(bool is_start) {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Glib::ustring measure_point = is_start ? "/tools/measure/measure-start" : "/tools/measure/measure-end";
+    return prefs->getPoint(measure_point, Geom::Point(Geom::infinity(),Geom::infinity()));
+}
+
+void MeasureTool::writeMeasurePoint(Geom::Point point, bool is_start) {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Glib::ustring measure_point = is_start ? "/tools/measure/measure-start" : "/tools/measure/measure-end";
+    prefs->setPoint(measure_point, point);
+}
+
+//This function is used to reverse the Measure, I do it in two steps because when
+//we move the knot the start_ or the end_p are overwritten so I need the original values.
+void MeasureTool::reverseKnots()
+{
+    Geom::Point start = start_p;
+    Geom::Point end = end_p;
+    this->knot_start->moveto(end);
+    this->knot_start->show();
+    this->knot_end->moveto(start);
+    this->knot_end->show();
+    start_p = end;
+    end_p = start;
+    this->showCanvasItems();
+}
+
+void MeasureTool::knotClickHandler(SPKnot *knot, guint state)
+{
+    if (state & GDK_SHIFT_MASK) {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        Glib::ustring const unit_name =  prefs->getString("/tools/measure/unit", "px");
+        explicit_base = explicit_base_tmp;
+        Inkscape::UI::Dialogs::KnotPropertiesDialog::showDialog(_desktop, knot, unit_name);
+    }
+}
+
+void MeasureTool::knotStartMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state)
+{
+    Geom::Point point = this->knot_start->position();
+    if (state & GDK_CONTROL_MASK) {
+        spdc_endpoint_snap_rotation(this, point, end_p, state);
+    } else if (!(state & GDK_SHIFT_MASK)) {
+        SnapManager &snap_manager = _desktop->namedview->snap_manager;
+        snap_manager.setup(_desktop);
+        Inkscape::SnapCandidatePoint scp(point, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+        scp.addOrigin(this->knot_end->position());
+        Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+        point = sp.getPoint();
+        snap_manager.unSetup();
+    }
+    if(start_p != point) {
+        start_p = point;
+        this->knot_start->moveto(start_p);
+    }
+    showCanvasItems();
+}
+
+void MeasureTool::knotEndMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state)
+{
+    Geom::Point point = this->knot_end->position();
+    if (state & GDK_CONTROL_MASK) {
+        spdc_endpoint_snap_rotation(this, point, start_p, state);
+    } else if (!(state & GDK_SHIFT_MASK)) {
+        SnapManager &snap_manager = _desktop->namedview->snap_manager;
+        snap_manager.setup(_desktop);
+        Inkscape::SnapCandidatePoint scp(point, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+        scp.addOrigin(this->knot_start->position());
+        Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+        point = sp.getPoint();
+        snap_manager.unSetup();
+    }
+    if(end_p != point) {
+        end_p = point;
+        this->knot_end->moveto(end_p);
+    }
+    showCanvasItems();
+}
+
+void MeasureTool::knotUngrabbedHandler(SPKnot */*knot*/,  unsigned int state)
+{
+    this->knot_start->moveto(start_p);
+    this->knot_end->moveto(end_p);
+    showCanvasItems();
+}
+
+static void calculate_intersections(SPDesktop *desktop, SPItem *item, Geom::PathVector const &lineseg,
+                                    std::unique_ptr<SPCurve> &&curve, std::vector<double> &intersections)
+{
+    curve->transform(item->i2doc_affine());
+    // Find all intersections of the control-line with this shape
+    Geom::CrossingSet cs = Geom::crossings(lineseg, curve->get_pathvector());
+    Geom::delete_duplicates(cs[0]);
+
+    // Reconstruct and store the points of intersection
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool show_hidden = prefs->getBool("/tools/measure/show_hidden", true);
+    for (const auto & m : cs[0]) {
+        if (!show_hidden) {
+            double eps = 0.0001;
+            if ((m.ta > eps &&
+             item == desktop->getItemAtPoint(desktop->d2w(desktop->dt2doc(lineseg[0].pointAt(m.ta - eps))), true, nullptr)) ||
+            (m.ta + eps < 1 &&
+             item == desktop->getItemAtPoint(desktop->d2w(desktop->dt2doc(lineseg[0].pointAt(m.ta + eps))), true, nullptr))) {
+                intersections.push_back(m.ta);
+            }
+        } else {
+            intersections.push_back(m.ta);
+        }
+    }
+}
+
+bool MeasureTool::root_handler(GdkEvent* event)
+{
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS: {
+        if (event->button.button != 1) {
+            break;
+        }
+        this->knot_start->hide();
+        this->knot_end->hide();
+        Geom::Point const button_w(event->button.x, event->button.y);
+        explicit_base = std::nullopt;
+        explicit_base_tmp = std::nullopt;
+        last_end = std::nullopt;
+
+        // save drag origin
+        start_p = _desktop->w2d(Geom::Point(event->button.x, event->button.y));
+        within_tolerance = true;
+
+        SnapManager &snap_manager = _desktop->namedview->snap_manager;
+        snap_manager.setup(_desktop);
+        snap_manager.freeSnapReturnByRef(start_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+        snap_manager.unSetup();
+
+        grabCanvasEvents(Gdk::KEY_PRESS_MASK      |
+                         Gdk::KEY_RELEASE_MASK    |
+                         Gdk::BUTTON_PRESS_MASK   |
+                         Gdk::BUTTON_RELEASE_MASK |
+                         Gdk::POINTER_MOTION_MASK );
+        ret = TRUE;
+        break;
+    }
+    case GDK_KEY_PRESS: {
+        if ((event->key.keyval == GDK_KEY_Control_L) || (event->key.keyval == GDK_KEY_Control_R)) {
+            explicit_base_tmp = explicit_base;
+            explicit_base = end_p;
+            showInfoBox(last_pos, true);
+        }
+        break;
+    }
+    case GDK_KEY_RELEASE: {
+        if ((event->key.keyval == GDK_KEY_Control_L) || (event->key.keyval == GDK_KEY_Control_R)) {
+            showInfoBox(last_pos, false);
+        }
+        break;
+    }
+    case GDK_MOTION_NOTIFY: {
+        if (!(event->motion.state & GDK_BUTTON1_MASK)) {
+            if(!(event->motion.state & GDK_SHIFT_MASK)) {
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+                SnapManager &snap_manager = _desktop->namedview->snap_manager;
+                snap_manager.setup(_desktop);
+
+                Inkscape::SnapCandidatePoint scp(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                scp.addOrigin(start_p);
+
+                snap_manager.preSnap(scp);
+                snap_manager.unSetup();
+            }
+            last_pos = Geom::Point(event->motion.x, event->motion.y);
+            if (event->motion.state & GDK_CONTROL_MASK) {
+                showInfoBox(last_pos, true);
+            } else {
+                showInfoBox(last_pos, false);
+            }
+        } else {
+            // Inkscape::Util::Unit const * unit = _desktop->getNamedView()->getDisplayUnit();
+            for (auto & idx : measure_item) {
+                delete idx;
+            }
+            measure_item.clear();
+
+            ret = TRUE;
+            Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+            tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            if ( within_tolerance) {
+                if ( Geom::LInfty( motion_w - start_p ) < tolerance) {
+                    return FALSE;   // Do not drag if we're within tolerance from origin.
+                }
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to move the object, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            within_tolerance = false;
+            if(event->motion.time == 0 || !last_end  || Geom::LInfty( motion_w - *last_end ) > (tolerance/4.0)) {
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+                end_p = motion_dt;
+
+                if (event->motion.state & GDK_CONTROL_MASK) {
+                    spdc_endpoint_snap_rotation(this, end_p, start_p, event->motion.state);
+                } else if (!(event->motion.state & GDK_SHIFT_MASK)) {
+                    SnapManager &snap_manager = _desktop->namedview->snap_manager;
+                    snap_manager.setup(_desktop);
+                    Inkscape::SnapCandidatePoint scp(end_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                    scp.addOrigin(start_p);
+                    Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+                    end_p = sp.getPoint();
+                    snap_manager.unSetup();
+                }
+                showCanvasItems();
+                last_end = motion_w ;
+            }
+            gobble_motion_events(GDK_BUTTON1_MASK);
+        }
+        break;
+    }
+    case GDK_BUTTON_RELEASE: {
+        if (event->button.button != 1) {
+            break;
+        }
+        this->knot_start->moveto(start_p);
+        this->knot_start->show();
+        if(last_end) {
+            end_p = _desktop->w2d(*last_end);
+            if (event->button.state & GDK_CONTROL_MASK) {
+                spdc_endpoint_snap_rotation(this, end_p, start_p, event->motion.state);
+            } else if (!(event->button.state & GDK_SHIFT_MASK)) {
+                SnapManager &snap_manager = _desktop->namedview->snap_manager;
+                snap_manager.setup(_desktop);
+                Inkscape::SnapCandidatePoint scp(end_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                scp.addOrigin(start_p);
+                Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+                end_p = sp.getPoint();
+                snap_manager.unSetup();
+            }
+        }
+        this->knot_end->moveto(end_p);
+        this->knot_end->show();
+        showCanvasItems();
+
+        ungrabCanvasEvents();
+        break;
+    }
+    default:
+        break;
+    }
+    if (!ret) {
+        ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void MeasureTool::setMarkers()
+{
+    SPDocument *doc = _desktop->getDocument();
+    SPObject *arrowStart = doc->getObjectById("Arrow2Sstart");
+    SPObject *arrowEnd = doc->getObjectById("Arrow2Send");
+    if (!arrowStart) {
+        setMarker(true);
+    }
+    if(!arrowEnd) {
+        setMarker(false);
+    }
+}
+void MeasureTool::setMarker(bool isStart)
+{
+    SPDocument *doc = _desktop->getDocument();
+    SPDefs *defs = doc->getDefs();
+    Inkscape::XML::Node *rmarker;
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+    rmarker = xml_doc->createElement("svg:marker");
+    rmarker->setAttribute("id", isStart ? "Arrow2Sstart" : "Arrow2Send");
+    rmarker->setAttribute("inkscape:isstock", "true");
+    rmarker->setAttribute("inkscape:stockid", isStart ? "Arrow2Sstart" : "Arrow2Send");
+    rmarker->setAttribute("orient", "auto");
+    rmarker->setAttribute("refX", "0.0");
+    rmarker->setAttribute("refY", "0.0");
+    rmarker->setAttribute("style", "overflow:visible;");
+    SPItem *marker = SP_ITEM(defs->appendChildRepr(rmarker));
+    Inkscape::GC::release(rmarker);
+    marker->updateRepr();
+    Inkscape::XML::Node *rpath;
+    rpath = xml_doc->createElement("svg:path");
+    rpath->setAttribute("d", "M 8.72,4.03 L -2.21,0.02 L 8.72,-4.00 C 6.97,-1.63 6.98,1.62 8.72,4.03 z");
+    rpath->setAttribute("id", isStart ? "Arrow2SstartPath" : "Arrow2SendPath");
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    sp_repr_css_set_property (css, "stroke", "none");
+    sp_repr_css_set_property (css, "fill", "#000000");
+    sp_repr_css_set_property (css, "fill-opacity", "1");
+    Glib::ustring css_str;
+    sp_repr_css_write_string(css,css_str);
+    rpath->setAttribute("style", css_str);
+    sp_repr_css_attr_unref (css);
+    rpath->setAttribute("transform", isStart ? "scale(0.3) translate(-2.3,0)" : "scale(0.3) rotate(180) translate(-2.3,0)");
+    SPItem *path = SP_ITEM(marker->appendChildRepr(rpath));
+    Inkscape::GC::release(rpath);
+    path->updateRepr();
+}
+
+void MeasureTool::toGuides()
+{
+    if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+        return;
+    }
+    SPDocument *doc = _desktop->getDocument();
+    Geom::Point start = _desktop->doc2dt(start_p) * _desktop->doc2dt();
+    Geom::Point end = _desktop->doc2dt(end_p) * _desktop->doc2dt();
+    Geom::Ray ray(start,end);
+    SPNamedView *namedview = _desktop->namedview;
+    if(!namedview) {
+        return;
+    }
+    setGuide(start,ray.angle(), _("Measure"));
+    if(explicit_base) {
+        auto layer = _desktop->layerManager().currentLayer();
+        explicit_base = *explicit_base * layer->i2doc_affine().inverse();
+        ray.setPoints(start, *explicit_base);
+        if(ray.angle() != 0) {
+            setGuide(start,ray.angle(), _("Base"));
+        }
+    }
+    setGuide(start,0,"");
+    setGuide(start,Geom::rad_from_deg(90),_("Start"));
+    setGuide(end,0,_("End"));
+    setGuide(end,Geom::rad_from_deg(90),"");
+    showCanvasItems(true);
+    doc->ensureUpToDate();
+    DocumentUndo::done(_desktop->getDocument(), _("Add guides from measure tool"), INKSCAPE_ICON("tool-measure"));
+}
+
+void MeasureTool::toPhantom()
+{
+    if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+        return;
+    }
+    SPDocument *doc = _desktop->getDocument();
+
+    for (auto & measure_phantom_item : measure_phantom_items) {
+        delete measure_phantom_item;
+    }
+    measure_phantom_items.clear();
+
+    for (auto & measure_tmp_item : measure_tmp_items) {
+        delete measure_tmp_item;
+    }
+    measure_tmp_items.clear();
+
+    showCanvasItems(false, false, true);
+    doc->ensureUpToDate();
+    DocumentUndo::done(_desktop->getDocument(), _("Keep last measure on the canvas, for reference"), INKSCAPE_ICON("tool-measure"));
+}
+
+void MeasureTool::toItem()
+{
+    if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+        return;
+    }
+    SPDocument *doc = _desktop->getDocument();
+    Geom::Ray ray(start_p,end_p);
+    guint32 line_color_primary = 0x0000ff7f;
+    Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+    Inkscape::XML::Node *rgroup = xml_doc->createElement("svg:g");
+    showCanvasItems(false, true, false, rgroup);
+    setLine(start_p,end_p, false, line_color_primary, rgroup);
+    SPItem *measure_item = SP_ITEM(_desktop->layerManager().currentLayer()->appendChildRepr(rgroup));
+    Inkscape::GC::release(rgroup);
+    measure_item->updateRepr();
+    doc->ensureUpToDate();
+    DocumentUndo::done(_desktop->getDocument(), _("Convert measure to items"), INKSCAPE_ICON("tool-measure"));
+    reset();
+}
+
+void MeasureTool::toMarkDimension()
+{
+    if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+        return;
+    }
+    SPDocument *doc = _desktop->getDocument();
+    setMarkers();
+    Geom::Ray ray(start_p,end_p);
+    Geom::Point start = start_p + Geom::Point::polar(ray.angle(), 5);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    dimension_offset = prefs->getDouble("/tools/measure/offset", 5.0);
+    start = start + Geom::Point::polar(ray.angle() + Geom::rad_from_deg(90), -dimension_offset);
+    Geom::Point end = end_p + Geom::Point::polar(ray.angle(), -5);
+    end = end+ Geom::Point::polar(ray.angle() + Geom::rad_from_deg(90), -dimension_offset);
+    guint32 color = 0x000000ff;
+    setLine(start, end, true, color);
+    Glib::ustring unit_name = prefs->getString("/tools/measure/unit");
+    if (!unit_name.compare("")) {
+        unit_name = DEFAULT_UNIT_NAME;
+    }
+    double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+
+    Geom::Point middle = Geom::middle_point(start, end);
+    double totallengthval = (end_p - start_p).length();
+    totallengthval = Inkscape::Util::Quantity::convert(totallengthval, "px", unit_name);
+    double scale = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+
+
+    int precision = prefs->getInt("/tools/measure/precision", 2);
+    Glib::ustring total = Glib::ustring::format(std::fixed, std::setprecision(precision), totallengthval * scale);
+    total += unit_name;
+
+    double textangle = Geom::rad_from_deg(180) - ray.angle();
+    if (_desktop->is_yaxisdown()) {
+        textangle = ray.angle() - Geom::rad_from_deg(180);
+    }
+
+    setLabelText(total, middle, fontsize, textangle, color);
+
+    doc->ensureUpToDate();
+    DocumentUndo::done(_desktop->getDocument(), _("Add global measure line"), INKSCAPE_ICON("tool-measure"));
+}
+
+void MeasureTool::setGuide(Geom::Point origin, double angle, const char *label)
+{
+    SPDocument *doc = _desktop->getDocument();
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+    SPRoot const *root = doc->getRoot();
+    Geom::Affine affine(Geom::identity());
+    if(root) {
+        affine *= root->c2p.inverse();
+    }
+    SPNamedView *namedview = _desktop->namedview;
+    if(!namedview) {
+        return;
+    }
+
+    // <sodipodi:guide> stores inverted y-axis coordinates
+    if (_desktop->is_yaxisdown()) {
+        origin[Geom::Y] = doc->getHeight().value("px") - origin[Geom::Y];
+        angle *= -1.0;
+    }
+
+    origin *= affine;
+    //measure angle
+    Inkscape::XML::Node *guide;
+    guide = xml_doc->createElement("sodipodi:guide");
+    std::stringstream position;
+    position.imbue(std::locale::classic());
+    position <<  origin[Geom::X] << "," << origin[Geom::Y];
+    guide->setAttribute("position", position.str() );
+    guide->setAttribute("inkscape:color", "rgb(167,0,255)");
+    guide->setAttribute("inkscape:label", label);
+    Geom::Point unit_vector = Geom::rot90(origin.polar(angle));
+    std::stringstream angle_str;
+    angle_str.imbue(std::locale::classic());
+    angle_str << unit_vector[Geom::X] << "," << unit_vector[Geom::Y];
+    guide->setAttribute("orientation", angle_str.str());
+    namedview->appendChild(guide);
+    Inkscape::GC::release(guide);
+}
+
+void MeasureTool::setLine(Geom::Point start_point,Geom::Point end_point, bool markers, guint32 color, Inkscape::XML::Node *measure_repr)
+{
+    if (!_desktop || !start_p.isFinite() || !end_p.isFinite()) {
+        return;
+    }
+    Geom::PathVector pathv;
+    Geom::Path path;
+    path.start(_desktop->doc2dt(start_point));
+    path.appendNew<Geom::LineSegment>(_desktop->doc2dt(end_point));
+    pathv.push_back(path);
+    pathv *= _desktop->layerManager().currentLayer()->i2doc_affine().inverse();
+    if(!pathv.empty()) {
+        setMeasureItem(pathv, false, markers, color, measure_repr);
+    }
+}
+
+void MeasureTool::setPoint(Geom::Point origin, Inkscape::XML::Node *measure_repr)
+{
+    if (!_desktop || !origin.isFinite()) {
+        return;
+    }
+    char const * svgd;
+    svgd = "m 0.707,0.707 6.586,6.586 m 0,-6.586 -6.586,6.586";
+    Geom::PathVector pathv = sp_svg_read_pathv(svgd);
+    Geom::Scale scale = Geom::Scale(_desktop->current_zoom()).inverse();
+    pathv *= Geom::Translate(Geom::Point(-3.5,-3.5));
+    pathv *= scale;
+    pathv *= Geom::Translate(Geom::Point() - (scale.vector() * 0.5));
+    pathv *= Geom::Translate(_desktop->doc2dt(origin));
+    pathv *= _desktop->layerManager().currentLayer()->i2doc_affine().inverse();
+    if (!pathv.empty()) {
+        guint32 line_color_secondary = 0xff0000ff;
+        setMeasureItem(pathv, false, false, line_color_secondary, measure_repr);
+    }
+}
+
+void MeasureTool::setLabelText(Glib::ustring const &value, Geom::Point pos, double fontsize, Geom::Coord angle,
+                               guint32 background, Inkscape::XML::Node *measure_repr)
+{
+    Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+    /* Create <text> */
+    pos = _desktop->doc2dt(pos);
+    Inkscape::XML::Node *rtext = xml_doc->createElement("svg:text");
+    rtext->setAttribute("xml:space", "preserve");
+
+
+    /* Set style */
+    sp_desktop_apply_style_tool(_desktop, rtext, "/tools/text", true);
+    if(measure_repr) {
+        rtext->setAttributeSvgDouble("x", 2);
+        rtext->setAttributeSvgDouble("y", 2);
+    } else {
+        rtext->setAttributeSvgDouble("x", 0);
+        rtext->setAttributeSvgDouble("y", 0);
+    }
+
+    /* Create <tspan> */
+    Inkscape::XML::Node *rtspan = xml_doc->createElement("svg:tspan");
+    rtspan->setAttribute("sodipodi:role", "line");
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    std::stringstream font_size;
+    font_size.imbue(std::locale::classic());
+    if(measure_repr) {
+        font_size <<  fontsize;
+    } else {
+        font_size <<  fontsize << "pt";
+    }
+    sp_repr_css_set_property (css, "font-size", font_size.str().c_str());
+    sp_repr_css_set_property (css, "font-style", "normal");
+    sp_repr_css_set_property (css, "font-weight", "normal");
+    sp_repr_css_set_property (css, "line-height", "125%");
+    sp_repr_css_set_property (css, "letter-spacing", "0");
+    sp_repr_css_set_property (css, "word-spacing", "0");
+    sp_repr_css_set_property (css, "text-align", "center");
+    sp_repr_css_set_property (css, "text-anchor", "middle");
+    if(measure_repr) {
+        sp_repr_css_set_property (css, "fill", "#FFFFFF");
+    } else {
+        sp_repr_css_set_property (css, "fill", "#000000");
+    }
+    sp_repr_css_set_property (css, "fill-opacity", "1");
+    sp_repr_css_set_property (css, "stroke", "none");
+    Glib::ustring css_str;
+    sp_repr_css_write_string(css,css_str);
+    rtspan->setAttribute("style", css_str);
+    sp_repr_css_attr_unref (css);
+    rtext->addChild(rtspan, nullptr);
+    Inkscape::GC::release(rtspan);
+    /* Create TEXT */
+    Inkscape::XML::Node *rstring = xml_doc->createTextNode(value.c_str());
+    rtspan->addChild(rstring, nullptr);
+    Inkscape::GC::release(rstring);
+    auto layer = _desktop->layerManager().currentLayer();
+    auto text_item = dynamic_cast<SPText*>(layer->appendChildRepr(rtext));
+    Inkscape::GC::release(rtext);
+    text_item->rebuildLayout();
+    text_item->updateRepr();
+    Geom::OptRect bbox = text_item->geometricBounds();
+    if (!measure_repr && bbox) {
+        Geom::Point center = bbox->midpoint();
+        text_item->transform *= Geom::Translate(center).inverse();
+        pos += Geom::Point::polar(angle+ Geom::rad_from_deg(90), -bbox->height());
+    }
+    if(measure_repr) {
+        /* Create <group> */
+        Inkscape::XML::Node *rgroup = xml_doc->createElement("svg:g");
+        /* Create <rect> */
+        Inkscape::XML::Node *rrect = xml_doc->createElement("svg:rect");
+        SPCSSAttr *css = sp_repr_css_attr_new ();
+        gchar color_line[64];
+        sp_svg_write_color (color_line, sizeof(color_line), background);
+        sp_repr_css_set_property (css, "fill", color_line);
+        sp_repr_css_set_property (css, "fill-opacity", "0.5");
+        sp_repr_css_set_property (css, "stroke-width", "0");
+        Glib::ustring css_str;
+        sp_repr_css_write_string(css,css_str);
+        rrect->setAttribute("style", css_str);
+        sp_repr_css_attr_unref (css);
+        rgroup->setAttributeSvgDouble("x", 0);
+        rgroup->setAttributeSvgDouble("y", 0);
+        rrect->setAttributeSvgDouble("x", -bbox->width()/2.0);
+        rrect->setAttributeSvgDouble("y", -bbox->height());
+        rrect->setAttributeSvgDouble("width", bbox->width() + 6);
+        rrect->setAttributeSvgDouble("height", bbox->height() + 6);
+        Inkscape::XML::Node *rtextitem = text_item->getRepr();
+        text_item->deleteObject();
+        rgroup->addChild(rtextitem, nullptr);
+        Inkscape::GC::release(rtextitem);
+        rgroup->addChild(rrect, nullptr);
+        Inkscape::GC::release(rrect);
+        SPItem *text_item_box = SP_ITEM(layer->appendChildRepr(rgroup));
+        Geom::Scale scale = Geom::Scale(_desktop->current_zoom()).inverse();
+        if(bbox) {
+            text_item_box->transform *= Geom::Translate(bbox->midpoint() - Geom::Point(1.0,1.0)).inverse();
+        }
+        text_item_box->transform *= scale;
+        text_item_box->transform *= Geom::Translate(Geom::Point() - (scale.vector() * 0.5));
+        text_item_box->transform *= Geom::Translate(pos);
+        text_item_box->transform *= layer->i2doc_affine().inverse();
+        text_item_box->updateRepr();
+        text_item_box->doWriteTransform(text_item_box->transform, nullptr, true);
+        Inkscape::XML::Node *rlabel = text_item_box->getRepr();
+        text_item_box->deleteObject();
+        measure_repr->addChild(rlabel, nullptr);
+        Inkscape::GC::release(rlabel);
+    } else {
+        text_item->transform *= Geom::Rotate(angle);
+        text_item->transform *= Geom::Translate(pos);
+        text_item->transform *= layer->i2doc_affine().inverse();
+        text_item->doWriteTransform(text_item->transform, nullptr, true);
+    }
+}
+
+void MeasureTool::reset()
+{
+    this->knot_start->hide();
+    this->knot_end->hide();
+
+    for (auto & measure_tmp_item : measure_tmp_items) {
+        delete measure_tmp_item;
+    }
+    measure_tmp_items.clear();
+}
+
+void MeasureTool::setMeasureCanvasText(bool is_angle, double precision, double amount, double fontsize,
+                                       Glib::ustring unit_name, Geom::Point position, guint32 background,
+                                       bool to_left, bool to_item,
+                                       bool to_phantom, Inkscape::XML::Node *measure_repr)
+{
+    Glib::ustring measure = Glib::ustring::format(std::setprecision(precision), std::fixed, amount);
+    measure += " ";
+    measure += (is_angle ? "°" : unit_name);
+    auto canvas_tooltip = new Inkscape::CanvasItemText(_desktop->getCanvasTemp(), position, measure);
+    canvas_tooltip->set_fontsize(fontsize);
+    canvas_tooltip->set_fill(0xffffffff);
+    canvas_tooltip->set_background(background);
+    if (to_left) {
+        canvas_tooltip->set_anchor(Geom::Point(0, 0.5));
+    } else {
+        canvas_tooltip->set_anchor(Geom::Point(0.5, 0.5));
+    }
+
+    if (to_phantom){
+        canvas_tooltip->set_background(0x4444447f);
+        measure_phantom_items.push_back(canvas_tooltip);
+    } else {
+        measure_tmp_items.push_back(canvas_tooltip);
+    }
+
+    if (to_item) {
+        setLabelText(measure, position, fontsize, 0, background, measure_repr);
+    }
+
+    canvas_tooltip->show();
+
+}
+
+void MeasureTool::setMeasureCanvasItem(Geom::Point position, bool to_item, bool to_phantom, Inkscape::XML::Node *measure_repr){
+    guint32 color = 0xff0000ff;
+    if (to_phantom){
+        color = 0x888888ff;
+    }
+
+    auto canvas_item = new Inkscape::CanvasItemCtrl(_desktop->getCanvasTemp(), Inkscape::CANVAS_ITEM_CTRL_TYPE_POINT, position);
+    canvas_item->set_stroke(color);
+    canvas_item->set_z_position(0);
+    canvas_item->set_pickable(false);
+    canvas_item->show();
+
+    if (to_phantom){
+        measure_phantom_items.emplace_back(canvas_item);
+    } else {
+        measure_tmp_items.emplace_back(canvas_item);
+    }
+
+    if(to_item) {
+        setPoint(position, measure_repr);
+    }
+}
+
+void MeasureTool::setMeasureCanvasControlLine(Geom::Point start, Geom::Point end, bool to_item, bool to_phantom,
+                                              Inkscape::CanvasItemColor ctrl_line_type,
+                                              Inkscape::XML::Node *measure_repr){
+    gint32 color = (ctrl_line_type == Inkscape::CANVAS_ITEM_PRIMARY) ? 0x0000ff7f : 0xff00007f;
+    if (to_phantom) {
+        color = (ctrl_line_type == Inkscape::CANVAS_ITEM_PRIMARY) ? 0x4444447f : 0x8888887f;
+    }
+
+    auto control_line = new Inkscape::CanvasItemCurve(_desktop->getCanvasTemp(), start, end);
+    control_line->set_stroke(color);
+    control_line->set_z_position(0);
+    control_line->show();
+
+    if (to_phantom) {
+        measure_phantom_items.emplace_back(control_line);
+    } else {
+        measure_tmp_items.emplace_back(control_line);
+    }
+
+    if (to_item) {
+        setLine(start, end, false, color, measure_repr);
+    }
+}
+
+// This is the text that follows the cursor around.
+void MeasureTool::showItemInfoText(Geom::Point pos, Glib::ustring const &measure_str, double fontsize)
+{
+    auto canvas_tooltip = new CanvasItemText(_desktop->getCanvasTemp(), pos, measure_str);
+    canvas_tooltip->set_fontsize(fontsize);
+    canvas_tooltip->set_fill(0xffffffff);
+    canvas_tooltip->set_background(0x00000099);
+    canvas_tooltip->set_anchor(Geom::Point(0, 0));
+    canvas_tooltip->set_fixed_line(true);
+    canvas_tooltip->show();
+    measure_item.push_back(canvas_tooltip);
+}
+
+void MeasureTool::showInfoBox(Geom::Point cursor, bool into_groups)
+{
+    using Inkscape::Util::Quantity;
+
+    for (auto & idx : measure_item) {
+        delete(idx);
+    }
+    measure_item.clear();
+
+    SPItem *newover = _desktop->getItemAtPoint(cursor, into_groups);
+    if (!newover) {
+        // Clear over when the cursor isn't over anything.
+        over = nullptr;
+        return;
+    }
+    Inkscape::Util::Unit const *unit = _desktop->getNamedView()->getDisplayUnit();
+
+    // Load preferences for measuring the new object.
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    int precision = prefs->getInt("/tools/measure/precision", 2);
+    bool selected = prefs->getBool("/tools/measure/only_selected", false);
+    auto box_type = prefs->getBool("/tools/bounding_box", false) ? SPItem::GEOMETRIC_BBOX : SPItem::VISUAL_BBOX;
+    double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+    double scale    = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+    Glib::ustring unit_name = prefs->getString("/tools/measure/unit", unit->abbr);
+
+    Geom::Scale zoom = Geom::Scale(Quantity::convert(_desktop->current_zoom(), "px", unit->abbr)).inverse();
+
+    if(newover != over) {
+        // Get information for the item, and cache it to save time.
+        over = newover;
+        auto affine = over->i2dt_affine() * Geom::Scale(scale);
+        if (auto bbox = over->bounds(box_type, affine)) {
+            item_width  = Quantity::convert(bbox->width(), "px", unit_name);
+            item_height = Quantity::convert(bbox->height(), "px", unit_name);
+            item_x      = Quantity::convert(bbox->left(), "px", unit_name);
+            item_y      = Quantity::convert(bbox->top(), "px", unit_name);
+
+            if (auto shape = dynamic_cast<SPShape *>(over)) {
+                auto pw = paths_to_pw(shape->curve()->get_pathvector());
+                item_length = Quantity::convert(Geom::length(pw * affine), "px", unit_name);
+            }
+        }
+    }
+
+    gchar *measure_str = nullptr;
+    std::stringstream precision_str;
+    precision_str.imbue(std::locale::classic());
+    double origin = Quantity::convert(14, "px", unit->abbr);
+    Geom::Point rel_position = Geom::Point(origin, origin);
+    Geom::Point pos = _desktop->w2d(cursor);
+    double gap = Quantity::convert(7 + fontsize, "px", unit->abbr);
+    double yaxisdir = _desktop->yaxisdir();
+
+    if (selected) {
+        showItemInfoText(pos - (yaxisdir * rel_position * zoom), _desktop->getSelection()->includes(over) ? _("Selected") : _("Not selected"), fontsize);
+        rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+    }
+
+    if (SP_IS_SHAPE(over)) {
+
+        precision_str << _("Length") <<  ": %." << precision << "f %s";
+        measure_str = g_strdup_printf(precision_str.str().c_str(), item_length, unit_name.c_str());
+        precision_str.str("");
+        showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+        rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+    } else if (SP_IS_GROUP(over)) {
+
+        measure_str = _("Press 'CTRL' to measure into group");
+        showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+        rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+    }
+
+    precision_str <<  "Y: %." << precision << "f %s";
+    measure_str = g_strdup_printf(precision_str.str().c_str(), item_y, unit_name.c_str());
+    precision_str.str("");
+    showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+    rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+    precision_str <<  "X: %." << precision << "f %s";
+    measure_str = g_strdup_printf(precision_str.str().c_str(), item_x, unit_name.c_str());
+    precision_str.str("");
+    showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+    rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+    precision_str << _("Height") << ": %." << precision << "f %s";
+    measure_str = g_strdup_printf(precision_str.str().c_str(), item_height, unit_name.c_str());
+    precision_str.str("");
+    showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+    rel_position = Geom::Point(rel_position[Geom::X], rel_position[Geom::Y] + gap);
+
+    precision_str << _("Width") << ": %." << precision << "f %s";
+    measure_str = g_strdup_printf(precision_str.str().c_str(), item_width, unit_name.c_str());
+    precision_str.str("");
+    showItemInfoText(pos - (yaxisdir * rel_position * zoom), measure_str, fontsize);
+    g_free(measure_str);
+}
+
+void MeasureTool::showCanvasItems(bool to_guides, bool to_item, bool to_phantom, Inkscape::XML::Node *measure_repr)
+{
+    if (!_desktop || !start_p.isFinite() || !end_p.isFinite() || start_p == end_p) {
+        return;
+    }
+    writeMeasurePoint(start_p, true);
+    writeMeasurePoint(end_p, false);
+
+    //clear previous canvas items, we'll draw new ones
+    for (auto & measure_tmp_item : measure_tmp_items) {
+        delete measure_tmp_item;
+    }
+    measure_tmp_items.clear();
+
+    //TODO:Calculate the measure area for current length and origin
+    // and use canvas->requestRedraw. In the calculation need a gap for outside text
+    // maybe this remove the trash lines on measure use
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool show_in_between = prefs->getBool("/tools/measure/show_in_between", true);
+    bool all_layers = prefs->getBool("/tools/measure/all_layers", true);
+    dimension_offset = 70;
+    Geom::PathVector lineseg;
+    Geom::Path p;
+    Geom::Point start_p_doc = start_p * _desktop->dt2doc();
+    Geom::Point end_p_doc = end_p * _desktop->dt2doc();
+    p.start(start_p_doc);
+    p.appendNew<Geom::LineSegment>(end_p_doc);
+    lineseg.push_back(p);
+
+    double angle = atan2(end_p - start_p);
+    double baseAngle = 0;
+
+    if (explicit_base) {
+        baseAngle = atan2(*explicit_base - start_p);
+        angle -= baseAngle;
+
+        // make sure that the angle is between -pi and pi.
+        if (angle > M_PI) {
+            angle -= 2 * M_PI;
+        }
+        if (angle < -M_PI) {
+            angle += 2 * M_PI;
+        }
+    }
+
+    std::vector<SPItem*> items;
+    SPDocument *doc = _desktop->getDocument();
+    Geom::Rect rect(start_p_doc, end_p_doc);
+    items = doc->getItemsPartiallyInBox(_desktop->dkey, rect, false, true, false, true);
+    SPGroup *current_layer = _desktop->layerManager().currentLayer();
+
+    std::vector<double> intersection_times;
+    bool only_selected = prefs->getBool("/tools/measure/only_selected", false);
+    for (auto i : items) {
+        SPItem *item = i;
+        if (!_desktop->getSelection()->includes(i) && only_selected) {
+            continue;
+        }
+        if (all_layers || _desktop->layerManager().layerForObject(item) == current_layer) {
+            if (auto shape = dynamic_cast<SPShape const *>(item)) {
+                calculate_intersections(_desktop, item, lineseg, SPCurve::copy(shape->curve()), intersection_times);
+            } else {
+                if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
+                    Inkscape::Text::Layout::iterator iter = te_get_layout(item)->begin();
+                    do {
+                        Inkscape::Text::Layout::iterator iter_next = iter;
+                        iter_next.nextGlyph(); // iter_next is one glyph ahead from iter
+                        if (iter == iter_next) {
+                            break;
+                        }
+
+                        // get path from iter to iter_next:
+                        auto curve = te_get_layout(item)->convertToCurves(iter, iter_next);
+                        iter = iter_next; // shift to next glyph
+                        if (!curve) {
+                            continue; // error converting this glyph
+                        }
+                        if (curve->is_empty()) { // whitespace glyph?
+                            continue;
+                        }
+
+                        calculate_intersections(_desktop, item, lineseg, std::move(curve), intersection_times);
+                        if (iter == te_get_layout(item)->end()) {
+                            break;
+                        }
+                    } while (true);
+                }
+            }
+        }
+    }
+    Glib::ustring unit_name = prefs->getString("/tools/measure/unit");
+    if (!unit_name.compare("")) {
+        unit_name = DEFAULT_UNIT_NAME;
+    }
+    double scale = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+    double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+    // Normal will be used for lines and text
+    Geom::Point windowNormal = Geom::unit_vector(Geom::rot90(_desktop->d2w(end_p - start_p)));
+    Geom::Point normal = _desktop->w2d(windowNormal);
+
+    std::vector<Geom::Point> intersections;
+    std::sort(intersection_times.begin(), intersection_times.end());
+    for (double & intersection_time : intersection_times) {
+        intersections.push_back(lineseg[0].pointAt(intersection_time));
+    }
+
+    if(!show_in_between && intersection_times.size() > 1) {
+        Geom::Point start = lineseg[0].pointAt(intersection_times[0]);
+        Geom::Point end = lineseg[0].pointAt(intersection_times[intersection_times.size()-1]);
+        intersections.clear();
+        intersections.push_back(start);
+        intersections.push_back(end);
+    }
+    if (!prefs->getBool("/tools/measure/ignore_1st_and_last", true)) {
+        intersections.insert(intersections.begin(),lineseg[0].pointAt(0));
+        intersections.push_back(lineseg[0].pointAt(1));
+    }
+    std::vector<LabelPlacement> placements;
+    for (size_t idx = 1; idx < intersections.size(); ++idx) {
+        LabelPlacement placement;
+        placement.lengthVal = (intersections[idx] - intersections[idx - 1]).length();
+        placement.lengthVal = Inkscape::Util::Quantity::convert(placement.lengthVal, "px", unit_name);
+        placement.offset = dimension_offset / 2;
+        placement.start = _desktop->doc2dt((intersections[idx - 1] + intersections[idx]) / 2);
+        placement.end = placement.start - (normal * placement.offset);
+
+        placements.push_back(placement);
+    }
+    int precision = prefs->getInt("/tools/measure/precision", 2);
+    // Adjust positions
+    repositionOverlappingLabels(placements, _desktop, windowNormal, fontsize, precision);
+    for (auto & place : placements) {
+        setMeasureCanvasText(false, precision, place.lengthVal * scale, fontsize, unit_name, place.end, 0x0000007f,
+                             false, to_item, to_phantom, measure_repr);
+    }
+    Geom::Point angleDisplayPt = calcAngleDisplayAnchor(_desktop, angle, baseAngle, start_p, end_p, fontsize);
+
+    setMeasureCanvasText(true, precision, Geom::deg_from_rad(angle), fontsize, unit_name, angleDisplayPt, 0x337f337f,
+                         false, to_item, to_phantom, measure_repr);
+
+    {
+        double totallengthval = (end_p - start_p).length();
+        totallengthval = Inkscape::Util::Quantity::convert(totallengthval, "px", unit_name);
+        Geom::Point origin = end_p + _desktop->w2d(Geom::Point(3 * fontsize, -fontsize));
+        setMeasureCanvasText(false, precision, totallengthval * scale, fontsize, unit_name, origin, 0x3333337f,
+                             true, to_item, to_phantom, measure_repr);
+    }
+
+    if (intersections.size() > 2) {
+        double totallengthval = (intersections[intersections.size()-1] - intersections[0]).length();
+        totallengthval = Inkscape::Util::Quantity::convert(totallengthval, "px", unit_name);
+        Geom::Point origin = _desktop->doc2dt((intersections[0] + intersections[intersections.size()-1])/2) + normal * dimension_offset;
+        setMeasureCanvasText(false, precision, totallengthval * scale, fontsize, unit_name, origin, 0x33337f7f,
+                             false, to_item, to_phantom, measure_repr);
+    }
+
+    // Initial point
+    setMeasureCanvasItem(start_p, false, to_phantom, measure_repr);
+
+    // Now that text has been added, we can add lines and controls so that they go underneath
+    for (size_t idx = 0; idx < intersections.size(); ++idx) {
+        setMeasureCanvasItem(_desktop->doc2dt(intersections[idx]), to_item, to_phantom, measure_repr);
+        if(to_guides) {
+            gchar *cross_number;
+            if (!prefs->getBool("/tools/measure/ignore_1st_and_last", true)) {
+                cross_number= g_strdup_printf(_("Crossing %lu"), static_cast<unsigned long>(idx));
+            } else {
+                cross_number= g_strdup_printf(_("Crossing %lu"), static_cast<unsigned long>(idx + 1));
+            }
+            if (!prefs->getBool("/tools/measure/ignore_1st_and_last", true) && idx == 0) {
+                setGuide(_desktop->doc2dt(intersections[idx]), angle + Geom::rad_from_deg(90), "");
+            } else {
+                setGuide(_desktop->doc2dt(intersections[idx]), angle + Geom::rad_from_deg(90), cross_number);
+            }
+            g_free(cross_number);
+        }
+    }
+    // Since adding goes to the bottom, do all lines last.
+
+    // draw main control line
+    {
+        setMeasureCanvasControlLine(start_p, end_p, false, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY, measure_repr);
+        double length = std::abs((end_p - start_p).length());
+        Geom::Point anchorEnd = start_p;
+        anchorEnd[Geom::X] += length;
+        if (explicit_base) {
+            anchorEnd *= (Geom::Affine(Geom::Translate(-start_p))
+                          * Geom::Affine(Geom::Rotate(baseAngle))
+                          * Geom::Affine(Geom::Translate(start_p)));
+        }
+        setMeasureCanvasControlLine(start_p, anchorEnd, to_item, to_phantom, Inkscape::CANVAS_ITEM_SECONDARY, measure_repr);
+        createAngleDisplayCurve(start_p, end_p, angleDisplayPt, angle, to_phantom, measure_phantom_items, measure_tmp_items, measure_repr);
+    }
+
+    if (intersections.size() > 2) {
+        setMeasureCanvasControlLine(_desktop->doc2dt(intersections[0]) + normal * dimension_offset, _desktop->doc2dt(intersections[intersections.size() - 1]) + normal * dimension_offset, to_item, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY , measure_repr);
+
+        setMeasureCanvasControlLine(_desktop->doc2dt(intersections[0]), _desktop->doc2dt(intersections[0]) + normal * dimension_offset, to_item, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY , measure_repr);
+
+        setMeasureCanvasControlLine(_desktop->doc2dt(intersections[intersections.size() - 1]), _desktop->doc2dt(intersections[intersections.size() - 1]) + normal * dimension_offset, to_item, to_phantom, Inkscape::CANVAS_ITEM_PRIMARY , measure_repr);
+    }
+
+    // call-out lines
+    for (auto & place : placements) {
+        setMeasureCanvasControlLine(place.start, place.end, to_item, to_phantom, Inkscape::CANVAS_ITEM_SECONDARY, measure_repr);
+    }
+
+    {
+        for (size_t idx = 1; idx < intersections.size(); ++idx) {
+            Geom::Point measure_text_pos = (intersections[idx - 1] + intersections[idx]) / 2;
+            setMeasureCanvasControlLine(_desktop->doc2dt(measure_text_pos), _desktop->doc2dt(measure_text_pos) - (normal * dimension_offset / 2), to_item, to_phantom, Inkscape::CANVAS_ITEM_SECONDARY, measure_repr);
+        }
+    }
+}
+
+/**
+ * Create a measure item in current document.
+ *
+ * @param pathv the path to create.
+ * @param markers if the path results get markers.
+ * @param color of the stroke.
+ * @param measure_repr container element.
+ */
+void MeasureTool::setMeasureItem(Geom::PathVector pathv, bool is_curve, bool markers, guint32 color, Inkscape::XML::Node *measure_repr)
+{
+    if(!_desktop) {
+        return;
+    }
+    SPDocument *doc = _desktop->getDocument();
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+    Inkscape::XML::Node *repr;
+    repr = xml_doc->createElement("svg:path");
+    auto str = sp_svg_write_path(pathv);
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    auto layer = _desktop->layerManager().currentLayer();
+    Geom::Coord strokewidth = layer->i2doc_affine().inverse().expansionX();
+    std::stringstream stroke_width;
+    stroke_width.imbue(std::locale::classic());
+    if(measure_repr) {
+        stroke_width <<  strokewidth / _desktop->current_zoom();
+    } else {
+        stroke_width <<  strokewidth;
+    }
+    sp_repr_css_set_property (css, "stroke-width", stroke_width.str().c_str());
+    sp_repr_css_set_property (css, "fill", "none");
+    if(color) {
+        gchar color_line[64];
+        sp_svg_write_color (color_line, sizeof(color_line), color);
+        sp_repr_css_set_property (css, "stroke", color_line);
+    } else {
+        sp_repr_css_set_property (css, "stroke", "#ff0000");
+    }
+    char const * stroke_linecap = is_curve ? "butt" : "square";
+    sp_repr_css_set_property (css, "stroke-linecap", stroke_linecap);
+    sp_repr_css_set_property (css, "stroke-linejoin", "miter");
+    sp_repr_css_set_property (css, "stroke-miterlimit", "4");
+    sp_repr_css_set_property (css, "stroke-dasharray", "none");
+    if(measure_repr) {
+        sp_repr_css_set_property (css, "stroke-opacity", "0.5");
+    } else {
+        sp_repr_css_set_property (css, "stroke-opacity", "1");
+    }
+    if(markers) {
+        sp_repr_css_set_property (css, "marker-start", "url(#Arrow2Sstart)");
+        sp_repr_css_set_property (css, "marker-end", "url(#Arrow2Send)");
+    }
+    Glib::ustring css_str;
+    sp_repr_css_write_string(css,css_str);
+    repr->setAttribute("style", css_str);
+    sp_repr_css_attr_unref (css);
+    repr->setAttribute("d", str);
+    if(measure_repr) {
+        measure_repr->addChild(repr, nullptr);
+        Inkscape::GC::release(repr);
+    } else {
+        SPItem *item = SP_ITEM(layer->appendChildRepr(repr));
+        Inkscape::GC::release(repr);
+        item->updateRepr();
+        _desktop->getSelection()->clear();
+        _desktop->getSelection()->add(item);
+    }
+}
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/measure-tool.h b/src/ui/tools/measure-tool.h
new file mode 100644
index 0000000..bdaf53a
--- /dev/null
+++ b/src/ui/tools/measure-tool.h
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_MEASURING_CONTEXT_H
+#define SEEN_SP_MEASURING_CONTEXT_H
+
+/*
+ * Our fine measuring tool
+ *
+ * Authors:
+ *   Felipe Correa da Silva Sanches <juca@members.fsf.org>
+ *   Jabiertxo Arraiza <jabier.arraiza@marker.es>
+ * Copyright (C) 2011 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <boost/optional.hpp>
+#include <optional>
+
+#include <sigc++/sigc++.h>
+
+#include <2geom/point.h>
+
+#include "ui/tools/tool-base.h"
+
+#include "display/control/canvas-temporary-item.h"
+#include "display/control/canvas-item-enums.h"
+
+class SPKnot;
+
+namespace Inkscape {
+
+class CanvasItemCurve;
+
+namespace UI {
+namespace Tools {
+
+class MeasureTool : public ToolBase {
+public:
+    MeasureTool(SPDesktop *desktop);
+    ~MeasureTool() override;
+
+    bool root_handler(GdkEvent* event) override;
+    virtual void showCanvasItems(bool to_guides = false, bool to_item = false, bool to_phantom = false, Inkscape::XML::Node *measure_repr = nullptr);
+    virtual void reverseKnots();
+    virtual void toGuides();
+    virtual void toPhantom();
+    virtual void toMarkDimension();
+    virtual void toItem();
+    virtual void reset();
+    virtual void setMarkers();
+    virtual void setMarker(bool isStart);
+    Geom::Point readMeasurePoint(bool is_start);
+
+    void showInfoBox(Geom::Point cursor, bool into_groups);
+    void showItemInfoText(Geom::Point pos, Glib::ustring const &measure_str, double fontsize);
+    void writeMeasurePoint(Geom::Point point, bool is_start);
+    void setGuide(Geom::Point origin, double angle, const char *label);
+    void setPoint(Geom::Point origin, Inkscape::XML::Node *measure_repr);
+    void setLine(Geom::Point start_point,Geom::Point end_point, bool markers, guint32 color,
+                 Inkscape::XML::Node *measure_repr = nullptr);
+    void setMeasureCanvasText(bool is_angle, double precision, double amount, double fontsize,
+                              Glib::ustring unit_name, Geom::Point position, guint32 background,
+                              bool to_left, bool to_item, bool to_phantom,
+                              Inkscape::XML::Node *measure_repr);
+    void setMeasureCanvasItem(Geom::Point position, bool to_item, bool to_phantom,
+                              Inkscape::XML::Node *measure_repr);
+    void setMeasureCanvasControlLine(Geom::Point start, Geom::Point end, bool to_item, bool to_phantom,
+                                     Inkscape::CanvasItemColor color, Inkscape::XML::Node *measure_repr);
+    void setLabelText(Glib::ustring const &value, Geom::Point pos, double fontsize, Geom::Coord angle,
+                      guint32 background,
+                      Inkscape::XML::Node *measure_repr = nullptr);
+
+    void knotStartMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state);
+    void knotEndMovedHandler(SPKnot */*knot*/, Geom::Point const &ppointer, guint state);
+    void knotClickHandler(SPKnot *knot, guint state);
+    void knotUngrabbedHandler(SPKnot */*knot*/,  unsigned int /*state*/);
+    void setMeasureItem(Geom::PathVector pathv, bool is_curve, bool markers, guint32 color, Inkscape::XML::Node *measure_repr);
+    void createAngleDisplayCurve(Geom::Point const &center, Geom::Point const &end, Geom::Point const &anchor,
+                                 double angle, bool to_phantom,
+                                 std::vector<Inkscape::CanvasItem *> &measure_phantom_items,
+                                 std::vector<Inkscape::CanvasItem *> &measure_tmp_items,
+                                 Inkscape::XML::Node *measure_repr = nullptr);
+
+private:
+    std::optional<Geom::Point> explicit_base;
+    std::optional<Geom::Point> last_end;
+    SPKnot *knot_start = nullptr;
+    SPKnot *knot_end   = nullptr;
+    gint dimension_offset = 20;
+    Geom::Point start_p;
+    Geom::Point end_p;
+    Geom::Point last_pos;
+
+    std::vector<Inkscape::CanvasItem *> measure_tmp_items;
+    std::vector<Inkscape::CanvasItem *> measure_phantom_items;
+    std::vector<Inkscape::CanvasItem *> measure_item;
+
+    double item_width;
+    double item_height;
+    double item_x;
+    double item_y;
+    double item_length;
+    SPItem *over;
+    sigc::connection _knot_start_moved_connection;
+    sigc::connection _knot_start_ungrabbed_connection;
+    sigc::connection _knot_start_click_connection;
+    sigc::connection _knot_end_moved_connection;
+    sigc::connection _knot_end_click_connection;
+    sigc::connection _knot_end_ungrabbed_connection;
+};
+
+}
+}
+}
+
+#endif // SEEN_SP_MEASURING_CONTEXT_H
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/mesh-tool.cpp b/src/ui/tools/mesh-tool.cpp
new file mode 100644
index 0000000..deff50c
--- /dev/null
+++ b/src/ui/tools/mesh-tool.cpp
@@ -0,0 +1,973 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Mesh drawing and editing tool
+ *
+ * Authors:
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
+ *   Abhishek Sharma
+ *   Tavmjong Bah <tavmjong@free.fr>
+ *
+ * Copyright (C) 2012 Tavmjong Bah
+ * Copyright (C) 2007 Johan Engelen
+ * Copyright (C) 2005 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+//#define DEBUG_MESH
+
+#include "mesh-tool.h"
+
+// Libraries
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+// General
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "gradient-drag.h"
+#include "gradient-chemistry.h"
+#include "include/macros.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "rubberband.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "display/control/canvas-item-curve.h"
+#include "display/curve.h"
+
+#include "object/sp-defs.h"
+#include "object/sp-mesh-gradient.h"
+#include "object/sp-namedview.h"
+#include "object/sp-text.h"
+#include "style.h"
+
+#include "ui/icon-names.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+// TODO: The gradient tool class looks like a 1:1 copy.
+
+MeshTool::MeshTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/mesh", "mesh.svg")
+// TODO: Why are these connections stored as pointers?
+    , selcon(nullptr)
+    , subselcon(nullptr)
+    , cursor_addnode(false)
+    , show_handles(true)
+    , edit_fill(true)
+    , edit_stroke(true)
+{
+    // TODO: This value is overwritten in the root handler
+    this->tolerance = 6;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/mesh/selcue", true)) {
+        this->enableSelectionCue();
+    }
+
+    this->enableGrDrag();
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    this->selcon = new sigc::connection(selection->connectChanged(
+    	sigc::mem_fun(this, &MeshTool::selection_changed)
+    ));
+
+    this->subselcon = new sigc::connection(desktop->connectToolSubselectionChanged(
+    	sigc::hide(sigc::bind(
+    		sigc::mem_fun(*this, &MeshTool::selection_changed),
+    		(Inkscape::Selection*)nullptr)
+    	)
+    ));
+
+    sp_event_context_read(this, "show_handles");
+    sp_event_context_read(this, "edit_fill");
+    sp_event_context_read(this, "edit_stroke");
+
+    this->selection_changed(selection);
+}
+
+MeshTool::~MeshTool() {
+    this->enableGrDrag(false);
+
+    this->selcon->disconnect();
+    delete this->selcon;
+    
+    this->subselcon->disconnect();
+    delete this->subselcon;
+}
+
+// This must match GrPointType enum sp-gradient.h
+// We should move this to a shared header (can't simply move to gradient.h since that would require
+// including <glibmm/i18n.h> which messes up "N_" in extensions... argh!).
+const gchar *ms_handle_descr [] = {
+    N_("Linear gradient <b>start</b>"), //POINT_LG_BEGIN
+    N_("Linear gradient <b>end</b>"),
+    N_("Linear gradient <b>mid stop</b>"),
+    N_("Radial gradient <b>center</b>"),
+    N_("Radial gradient <b>radius</b>"),
+    N_("Radial gradient <b>radius</b>"),
+    N_("Radial gradient <b>focus</b>"), // POINT_RG_FOCUS
+    N_("Radial gradient <b>mid stop</b>"),
+    N_("Radial gradient <b>mid stop</b>"),
+    N_("Mesh gradient <b>corner</b>"),
+    N_("Mesh gradient <b>handle</b>"),
+    N_("Mesh gradient <b>tensor</b>")
+};
+
+void MeshTool::selection_changed(Inkscape::Selection* /*sel*/) {
+    Inkscape::Selection *selection = _desktop->getSelection();
+
+    if (selection == nullptr) {
+        return;
+    }
+
+    guint n_obj = (guint) boost::distance(selection->items());
+
+    if (!_grdrag->isNonEmpty() || selection->isEmpty()) {
+        return;
+    }
+
+    guint n_tot = _grdrag->numDraggers();
+    guint n_sel = _grdrag->numSelected();
+
+    //The use of ngettext in the following code is intentional even if the English singular form would never be used
+    if (n_sel == 1) {
+        if (_grdrag->singleSelectedDraggerNumDraggables() == 1) {
+            gchar * message = g_strconcat(
+                //TRANSLATORS: %s will be substituted with the point name (see previous messages); This is part of a compound message
+                _("%s selected"),
+                //TRANSLATORS: Mind the space in front. This is part of a compound message
+                ngettext(" out of %d mesh handle"," out of %d mesh handles",n_tot),
+                ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+            this->message_context->setF(Inkscape::NORMAL_MESSAGE, message,
+                                       _(ms_handle_descr[_grdrag->singleSelectedDraggerSingleDraggableType()]), n_tot, n_obj);
+        } else {
+            gchar * message =
+                g_strconcat(
+                    //TRANSLATORS: This is a part of a compound message (out of two more indicating: grandint handle count & object count)
+                    ngettext("One handle merging %d stop (drag with <b>Shift</b> to separate) selected",
+                             "One handle merging %d stops (drag with <b>Shift</b> to separate) selected",
+                             _grdrag->singleSelectedDraggerNumDraggables()),
+                    ngettext(" out of %d mesh handle"," out of %d mesh handles",n_tot),
+                    ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+            this->message_context->setF(Inkscape::NORMAL_MESSAGE, message, _grdrag->singleSelectedDraggerNumDraggables(), n_tot, n_obj);
+        }
+    } else if (n_sel > 1) {
+        //TRANSLATORS: The plural refers to number of selected mesh handles. This is part of a compound message (part two indicates selected object count)
+        gchar * message =
+            g_strconcat(ngettext("<b>%d</b> mesh handle selected out of %d","<b>%d</b> mesh handles selected out of %d",n_sel),
+                        //TRANSLATORS: Mind the space in front. (Refers to gradient handles selected). This is part of a compound message
+                        ngettext(" on %d selected object"," on %d selected objects",n_obj),nullptr);
+        this->message_context->setF(Inkscape::NORMAL_MESSAGE, message, n_sel, n_tot, n_obj);
+    } else if (n_sel == 0) {
+        this->message_context->setF(Inkscape::NORMAL_MESSAGE,
+                                   //TRANSLATORS: The plural refers to number of selected objects
+                                   ngettext("<b>No</b> mesh handles selected out of %d on %d selected object",
+                                            "<b>No</b> mesh handles selected out of %d on %d selected objects",n_obj), n_tot, n_obj);
+    }
+
+    // FIXME
+    // We need to update mesh gradient handles.
+    // Get gradient this drag belongs too..
+}
+
+void MeshTool::set(const Inkscape::Preferences::Entry& value) {
+    Glib::ustring entry_name = value.getEntryName();
+    if (entry_name == "show_handles") {
+        this->show_handles = value.getBool(true);
+    } else if (entry_name == "edit_fill") {
+        this->edit_fill = value.getBool(true);
+    } else if (entry_name == "edit_stroke") {
+        this->edit_stroke = value.getBool(true);
+    } else {
+        ToolBase::set(value);
+    }
+}
+
+void MeshTool::select_next()
+{
+    g_assert(_grdrag);
+    GrDragger *d = _grdrag->select_next();
+    _desktop->scroll_to_point(d->point, 1.0);
+}
+
+void MeshTool::select_prev()
+{
+    g_assert(_grdrag);
+    GrDragger *d = _grdrag->select_prev();
+    _desktop->scroll_to_point(d->point, 1.0);
+}
+
+/**
+ * Returns vector of control curves mouse is over. Returns only first if 'first' is true.
+ * event_p is in canvas (world) units.
+ */
+std::vector<CanvasItemCurve *> MeshTool::over_curve(Geom::Point event_p, bool first)
+{
+    //Translate mouse point into proper coord system: needed later.
+    mousepoint_doc = _desktop->w2d(event_p);
+    std::vector<CanvasItemCurve *> selected;
+
+    for (auto curve : _grdrag->item_curves) {
+        if (curve->contains(event_p, tolerance)) {
+            selected.push_back(&*curve);
+            if (first) {
+                break;
+            }
+        }
+    }
+    return selected;
+}
+
+
+/**
+Split row/column near the mouse point.
+*/
+void MeshTool::split_near_point(SPItem *item, Geom::Point mouse_p, guint32 /*etime*/)
+{
+#ifdef DEBUG_MESH
+    std::cout << "split_near_point: entrance: " << mouse_p << std::endl;
+#endif
+
+    // item is the selected item. mouse_p the location in doc coordinates of where to add the stop
+    get_drag()->addStopNearPoint(item, mouse_p, tolerance / _desktop->current_zoom());
+    DocumentUndo::done(_desktop->getDocument(), _("Split mesh row/column"), INKSCAPE_ICON("mesh-gradient"));
+    get_drag()->updateDraggers();
+}
+
+/**
+Wrapper for various mesh operations that require a list of selected corner nodes.
+ */
+void MeshTool::corner_operation(MeshCornerOperation operation)
+{
+
+#ifdef DEBUG_MESH
+    std::cout << "sp_mesh_corner_operation: entrance: " << operation << std::endl;
+#endif
+
+    SPDocument *doc = nullptr;
+
+    std::map<SPMeshGradient*, std::vector<guint> > points;
+    std::map<SPMeshGradient*, SPItem*> items;
+    std::map<SPMeshGradient*, Inkscape::PaintTarget> fill_or_stroke;
+
+    // Get list of selected draggers for each mesh.
+    // For all selected draggers (a dragger may include draggerables from different meshes).
+    for (auto dragger : _grdrag->selected) {
+        // For all draggables of dragger (a draggable corresponds to a unique mesh).
+        for (auto d : dragger->draggables) { 
+            // Only mesh corners
+            if( d->point_type != POINT_MG_CORNER ) continue;
+
+            // Find the gradient
+            SPMeshGradient *gradient = SP_MESHGRADIENT( getGradient (d->item, d->fill_or_stroke) );
+
+            // Collect points together for same gradient
+            points[gradient].push_back( d->point_i );
+            items[gradient] = d->item;
+            fill_or_stroke[gradient] = d->fill_or_stroke ? Inkscape::FOR_FILL: Inkscape::FOR_STROKE;
+        }
+    }
+
+    // Loop over meshes.
+    for( std::map<SPMeshGradient*, std::vector<guint> >::const_iterator iter = points.begin(); iter != points.end(); ++iter) {
+        SPMeshGradient *mg = iter->first;
+        if( iter->second.size() > 0 ) {
+            guint noperation = 0;
+            switch (operation) {
+
+                case MG_CORNER_SIDE_TOGGLE:
+                    // std::cout << "SIDE_TOGGLE" << std::endl;
+                    noperation += mg->array.side_toggle( iter->second );
+                    break;
+
+                case MG_CORNER_SIDE_ARC:
+                    // std::cout << "SIDE_ARC" << std::endl;
+                    noperation += mg->array.side_arc( iter->second );
+                    break;
+
+                case MG_CORNER_TENSOR_TOGGLE:
+                    // std::cout << "TENSOR_TOGGLE" << std::endl;
+                    noperation += mg->array.tensor_toggle( iter->second );
+                    break;
+
+                case MG_CORNER_COLOR_SMOOTH:
+                    // std::cout << "COLOR_SMOOTH" << std::endl;
+                    noperation += mg->array.color_smooth( iter->second );
+                    break;
+
+                case MG_CORNER_COLOR_PICK:
+                    // std::cout << "COLOR_PICK" << std::endl;
+                    noperation += mg->array.color_pick( iter->second, items[iter->first] );
+                    break;
+
+                case MG_CORNER_INSERT:
+                    // std::cout << "INSERT" << std::endl;
+                    noperation += mg->array.insert( iter->second );
+                    break;
+
+                default:
+                    std::cout << "sp_mesh_corner_operation: unknown operation" << std::endl;
+            }                    
+
+            if( noperation > 0 ) {
+                mg->array.write( mg );
+                mg->requestModified(SP_OBJECT_MODIFIED_FLAG);
+                doc = mg->document;
+
+                switch (operation) {
+
+                    case MG_CORNER_SIDE_TOGGLE:
+                        DocumentUndo::done(doc, _("Toggled mesh path type."), INKSCAPE_ICON("mesh-gradient"));
+                        _grdrag->local_change = true; // Don't create new draggers.
+                        break;
+
+                    case MG_CORNER_SIDE_ARC:
+                        DocumentUndo::done(doc, _("Approximated arc for mesh side."), INKSCAPE_ICON("mesh-gradient"));
+                        _grdrag->local_change = true; // Don't create new draggers.
+                        break;
+
+                    case MG_CORNER_TENSOR_TOGGLE:
+                        DocumentUndo::done(doc, _("Toggled mesh tensors."), INKSCAPE_ICON("mesh-gradient"));
+                        _grdrag->local_change = true; // Don't create new draggers.
+                        break;
+
+                    case MG_CORNER_COLOR_SMOOTH:
+                        DocumentUndo::done(doc, _("Smoothed mesh corner color."), INKSCAPE_ICON("mesh-gradient"));
+                        _grdrag->local_change = true; // Don't create new draggers.
+                        break;
+
+                    case MG_CORNER_COLOR_PICK:
+                        DocumentUndo::done(doc, _("Picked mesh corner color."), INKSCAPE_ICON("mesh-gradient"));
+                        _grdrag->local_change = true; // Don't create new draggers.
+                        break;
+
+                    case MG_CORNER_INSERT:
+                        DocumentUndo::done(doc, _("Inserted new row or column."), INKSCAPE_ICON("mesh-gradient"));
+                        break;
+
+                    default:
+                        std::cout << "sp_mesh_corner_operation: unknown operation" << std::endl;
+                }
+            }
+        }
+    }
+}
+
+
+/**
+ * Scale mesh to just fit into bbox of selected items.
+ */
+void MeshTool::fit_mesh_in_bbox()
+{
+
+#ifdef DEBUG_MESH
+    std::cout << "fit_mesh_in_bbox: entrance: Entrance" << std::endl;
+#endif
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    if (selection == nullptr) {
+        return;
+    }
+
+    bool changed = false;
+    auto itemlist = selection->items();
+    for (auto i=itemlist.begin(); i!=itemlist.end(); ++i) {
+
+        SPItem *item = *i;
+        SPStyle *style = item->style;
+
+        if (style) {
+
+            if (style->fill.isPaintserver()) {
+                SPPaintServer *server = item->style->getFillPaintServer();
+                if ( SP_IS_MESHGRADIENT(server) ) {
+
+                    Geom::OptRect item_bbox = item->geometricBounds();
+                    SPMeshGradient *gradient = SP_MESHGRADIENT(server);
+                    if (gradient->array.fill_box( item_bbox )) {
+                        changed = true;
+                    }
+                }
+            }
+
+            if (style->stroke.isPaintserver()) {
+                SPPaintServer *server = item->style->getStrokePaintServer();
+                if ( SP_IS_MESHGRADIENT(server) ) {
+
+                    Geom::OptRect item_bbox = item->visualBounds();
+                    SPMeshGradient *gradient = SP_MESHGRADIENT(server);
+                    if (gradient->array.fill_box( item_bbox )) {
+                        changed = true;
+                    }
+                }
+            }
+
+        }
+    }
+    if (changed) {
+        DocumentUndo::done(_desktop->getDocument(), _("Fit mesh inside bounding box"), INKSCAPE_ICON("mesh-gradient"));
+    }
+}
+
+
+/**
+Handles all keyboard and mouse input for meshs.
+Note: node/handle events are take care of elsewhere.
+*/
+bool MeshTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    // Get value of fill or stroke preference
+    Inkscape::PaintTarget fill_or_stroke_pref =
+        static_cast<Inkscape::PaintTarget>(prefs->getInt("/tools/mesh/newfillorstroke"));
+
+    g_assert(_grdrag);
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_2BUTTON_PRESS:
+
+#ifdef DEBUG_MESH
+        std::cout << "root_handler: GDK_2BUTTON_PRESS" << std::endl;
+#endif
+
+        // Double click:
+        //  If over a mesh line, divide mesh row/column
+        //  If not over a line and no mesh, create new mesh for top selected object.
+
+        if ( event->button.button == 1 ) {
+
+            // Are we over a mesh line? (Should replace by CanvasItem event.)
+            auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+            if (!over_curve.empty()) {
+                // We take the first item in selection, because with doubleclick, the first click
+                // always resets selection to the single object under cursor
+                split_near_point(selection->items().front(), this->mousepoint_doc, event->button.time);
+            } else {
+                // Create a new gradient with default coordinates.
+
+                // Check if object already has mesh... if it does,
+                // don't create new mesh with click-drag.
+                bool has_mesh = false;
+                if (!selection->isEmpty()) {
+                    SPStyle *style = selection->items().front()->style;
+                    if (style) {
+                        SPPaintServer *server =
+                            (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+                            style->getFillPaintServer():
+                            style->getStrokePaintServer();
+                        if (server && SP_IS_MESHGRADIENT(server)) 
+                            has_mesh = true;
+                    }
+                }
+
+                if (!has_mesh) {
+                    new_default();
+                }
+            }
+
+            ret = TRUE;
+        }
+        break;
+
+    case GDK_BUTTON_PRESS:
+
+#ifdef DEBUG_MESH
+        std::cout << "root_handler: GDK_BUTTON_PRESS" << std::endl;
+#endif
+
+        // Button down
+        //  If mesh already exists, do rubber band selection.
+        //  Else set origin for drag which will create a new gradient.
+         if ( event->button.button == 1 ) {
+
+            // Are we over a mesh curve?
+            auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y), false);
+
+            if (!over_curve.empty()) {
+                for (auto it : over_curve) {
+                    SPItem *item = it->get_item();
+                    Inkscape::PaintTarget fill_or_stroke =
+                        it->get_is_fill() ? Inkscape::FOR_FILL : Inkscape::FOR_STROKE;
+                    GrDragger* dragger0 = _grdrag->getDraggerFor(item, POINT_MG_CORNER, it->get_corner0(), fill_or_stroke);
+                    GrDragger* dragger1 = _grdrag->getDraggerFor(item, POINT_MG_CORNER, it->get_corner1(), fill_or_stroke);
+                    bool add    = (event->button.state & GDK_SHIFT_MASK);
+                    bool toggle = (event->button.state & GDK_CONTROL_MASK);
+                    if ( !add && !toggle ) {
+                        _grdrag->deselectAll();
+                    }
+                    _grdrag->setSelected( dragger0, true, !toggle );
+                    _grdrag->setSelected( dragger1, true, !toggle );
+                }
+                ret = true;
+                break; // To avoid putting the following code in an else block.
+            }
+
+            Geom::Point button_w(event->button.x, event->button.y);
+
+            // save drag origin
+            this->xp = (gint) button_w[Geom::X];
+            this->yp = (gint) button_w[Geom::Y];
+            this->within_tolerance = true;
+
+            dragging = true;
+
+            Geom::Point button_dt = _desktop->w2d(button_w);
+            // Check if object already has mesh... if it does,
+            // don't create new mesh with click-drag.
+            bool has_mesh = false;
+            if (!selection->isEmpty()) {
+                SPStyle *style = selection->items().front()->style;
+                if (style) {
+                    SPPaintServer *server =
+                        (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+                        style->getFillPaintServer():
+                        style->getStrokePaintServer();
+                    if (server && SP_IS_MESHGRADIENT(server)) 
+                        has_mesh = true;
+                }
+            }
+
+            if (has_mesh) {
+                Inkscape::Rubberband::get(_desktop)->start(_desktop, button_dt);
+            }
+
+            // remember clicked item, disregarding groups, honoring Alt; do nothing with Crtl to
+            // enable Ctrl+doubleclick of exactly the selected item(s)
+            if (!(event->button.state & GDK_CONTROL_MASK)) {
+                this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
+            }
+
+            if (!selection->isEmpty()) {
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                m.unSetup();
+            }
+
+            this->origin = button_dt;
+
+            ret = TRUE;
+        }
+        break;
+
+    case GDK_MOTION_NOTIFY:
+        // Mouse move
+        if ( dragging && ( event->motion.state & GDK_BUTTON1_MASK ) ) {
+ 
+#ifdef DEBUG_MESH
+            std::cout << "root_handler: GDK_MOTION_NOTIFY: Dragging" << std::endl;
+#endif
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to draw, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            this->within_tolerance = false;
+
+            Geom::Point const motion_w(event->motion.x,
+                                     event->motion.y);
+            Geom::Point const motion_dt = _desktop->w2d(motion_w);
+
+            if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                Inkscape::Rubberband::get(_desktop)->move(motion_dt);
+                this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("<b>Draw around</b> handles to select them"));
+            } else {
+                // Do nothing. For a linear/radial gradient we follow the drag, updating the
+                // gradient as the end node is dragged. For a mesh gradient, the gradient is always
+                // created to fill the object when the drag ends.
+            }
+
+            gobble_motion_events(GDK_BUTTON1_MASK);
+
+            ret = TRUE;
+        } else {
+            // Not dragging
+
+            // Do snapping
+            if (!_grdrag->mouseOver() && !selection->isEmpty()) {
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const motion_dt = _desktop->w2d(motion_w);
+
+                m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE));
+                m.unSetup();
+            }
+
+            // Highlight corner node corresponding to side or tensor node
+            if (_grdrag->mouseOver()) {
+                // MESH FIXME: Light up corresponding corner node corresponding to node we are over.
+                // See "pathflash" in ui/tools/node-tool.cpp for ideas.
+                // Use _desktop->add_temporary_canvasitem( SPCanvasItem, milliseconds );
+            }
+
+            // Change cursor shape if over line
+            auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+            if (this->cursor_addnode && over_curve.empty()) {
+                this->set_cursor("mesh.svg");
+                this->cursor_addnode = false;
+            } else if (!this->cursor_addnode && !over_curve.empty()) {
+                this->set_cursor("mesh-add.svg");
+                this->cursor_addnode = true;
+            }
+        }
+        break;
+
+    case GDK_BUTTON_RELEASE:
+
+#ifdef DEBUG_MESH
+        std::cout << "root_handler: GDK_BUTTON_RELEASE" << std::endl;
+#endif
+
+        this->xp = this->yp = 0;
+
+        if ( event->button.button == 1 ) {
+
+            // Check if over line
+            auto over_curve = this->over_curve(Geom::Point(event->motion.x, event->motion.y));
+
+            if ( (event->button.state & GDK_CONTROL_MASK) && (event->button.state & GDK_MOD1_MASK ) ) {
+                if (!over_curve.empty()) {
+                    split_near_point(over_curve[0]->get_item(), this->mousepoint_doc, 0);
+                    ret = TRUE;
+                }
+            } else {
+                dragging = false;
+
+                // unless clicked with Ctrl (to enable Ctrl+doubleclick).
+                if (event->button.state & GDK_CONTROL_MASK) {
+                    ret = TRUE;
+                    break;
+                }
+
+                if (!this->within_tolerance) {
+
+                    // Check if object already has mesh... if it does,
+                    // don't create new mesh with click-drag.
+                    bool has_mesh = false;
+                    if (!selection->isEmpty()) {
+                        SPStyle *style = selection->items().front()->style;
+                        if (style) {
+                            SPPaintServer *server =
+                                (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+                                style->getFillPaintServer():
+                                style->getStrokePaintServer();
+                            if (server && SP_IS_MESHGRADIENT(server)) 
+                                has_mesh = true;
+                        }
+                    }
+
+                    if (!has_mesh) {
+                        new_default();
+                    } else {
+
+                        // we've been dragging, either create a new gradient
+                        // or rubberband-select if we have rubberband
+                        Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+
+                        if (r->is_started() && !this->within_tolerance) {
+                            // this was a rubberband drag
+                            if (r->getMode() == RUBBERBAND_MODE_RECT) {
+                                Geom::OptRect const b = r->getRectangle();
+                                if (!(event->button.state & GDK_SHIFT_MASK)) {
+                                    _grdrag->deselectAll();
+                                }
+                                _grdrag->selectRect(*b);
+                            }
+                        }
+                    }
+
+                } else if (this->item_to_select) {
+                    if (!over_curve.empty()) {
+                        // Clicked on an existing mesh line, don't change selection. This stops
+                        // possible change in selection during a double click with overlapping objects
+                    } else {
+                        // no dragging, select clicked item if any
+                        if (event->button.state & GDK_SHIFT_MASK) {
+                            selection->toggle(this->item_to_select);
+                        } else {
+                            _grdrag->deselectAll();
+                            selection->set(this->item_to_select);
+                        }
+                    }
+                } else {
+                    if (!over_curve.empty()) {
+                        // Clicked on an existing mesh line, don't change selection. This stops
+                        // possible change in selection during a double click with overlapping objects
+                    } else {
+                        // click in an empty space; do the same as Esc
+                        if (!_grdrag->selected.empty()) {
+                            _grdrag->deselectAll();
+                        } else {
+                            selection->clear();
+                        }
+                    }
+                }
+
+                this->item_to_select = nullptr;
+                ret = TRUE;
+            }
+
+            Inkscape::Rubberband::get(_desktop)->stop();
+        }
+        break;
+
+    case GDK_KEY_PRESS:
+
+#ifdef DEBUG_MESH
+        std::cout << "root_handler: GDK_KEY_PRESS" << std::endl;
+#endif
+
+        // FIXME: tip
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+        case GDK_KEY_Meta_R:
+
+            // sp_event_show_modifier_tip (this->defaultMessageContext(), event,
+            //                             _("FIXME<b>Ctrl</b>: snap mesh angle"),
+            //                             _("FIXME<b>Shift</b>: draw mesh around the starting point"),
+            //                             NULL);
+            break;
+
+        case GDK_KEY_A:
+        case GDK_KEY_a:
+            if (MOD__CTRL_ONLY(event) && _grdrag->isNonEmpty()) {
+                _grdrag->selectAll();
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+            if (!_grdrag->selected.empty()) {
+                _grdrag->deselectAll();
+            } else {
+                selection->clear();
+            }
+
+            ret = TRUE;
+            //TODO: make dragging escapable by Esc
+            break;
+
+        // Mesh Operations --------------------------------------------
+
+        case GDK_KEY_Insert:
+        case GDK_KEY_KP_Insert:
+            // with any modifiers:
+            this->corner_operation(MG_CORNER_INSERT);
+            ret = TRUE;
+            break;
+
+        case GDK_KEY_i:
+        case GDK_KEY_I:
+            if (MOD__SHIFT_ONLY(event)) {
+                // Shift+I - insert corners (alternate keybinding for keyboards
+                //           that don't have the Insert key)
+                this->corner_operation(MG_CORNER_INSERT);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+        case GDK_KEY_BackSpace:
+            if (!_grdrag->selected.empty()) {
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_b:  // Toggle mesh side between lineto and curveto.
+        case GDK_KEY_B:
+            if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+                this->corner_operation(MG_CORNER_SIDE_TOGGLE);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_c:  // Convert mesh side from generic Bezier to Bezier approximating arc,
+        case GDK_KEY_C:  // preserving handle direction.
+            if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+                this->corner_operation(MG_CORNER_SIDE_ARC);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_g:  // Toggle mesh tensor points on/off
+        case GDK_KEY_G:
+            if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+                this->corner_operation(MG_CORNER_TENSOR_TOGGLE);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_j:  // Smooth corner color
+        case GDK_KEY_J:
+            if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+                this->corner_operation(MG_CORNER_COLOR_SMOOTH);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_k:  // Pick corner color
+        case GDK_KEY_K:
+            if (MOD__ALT(event) && _grdrag->isNonEmpty() && _grdrag->hasSelection()) {
+                this->corner_operation(MG_CORNER_COLOR_PICK);
+                ret = TRUE;
+            }
+            break;
+
+        default:
+            ret = _grdrag->key_press_handler(event);
+            break;
+        }
+
+        break;
+
+    case GDK_KEY_RELEASE:
+
+#ifdef DEBUG_MESH
+        std::cout << "root_handler: GDK_KEY_RELEASE" << std::endl;
+#endif
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+        case GDK_KEY_Meta_R:
+            this->defaultMessageContext()->clear();
+            break;
+        default:
+            break;
+        }
+        break;
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+// Creates a new mesh gradient.
+void MeshTool::new_default()
+{
+    Inkscape::Selection *selection = _desktop->getSelection();
+    SPDocument *document = _desktop->getDocument();
+
+    if (!selection->isEmpty()) {
+
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        Inkscape::PaintTarget fill_or_stroke_pref =
+            static_cast<Inkscape::PaintTarget>(prefs->getInt("/tools/mesh/newfillorstroke"));
+
+        // Ensure mesh is immediately editable.
+        // Editing both fill and stroke at same time doesn't work well so avoid.
+        if (fill_or_stroke_pref == Inkscape::FOR_FILL) {
+            prefs->setBool("/tools/mesh/edit_fill",   true );
+            prefs->setBool("/tools/mesh/edit_stroke", false);
+        } else {
+            prefs->setBool("/tools/mesh/edit_fill",   false);
+            prefs->setBool("/tools/mesh/edit_stroke", true );
+        }
+
+// HACK: reset fill-opacity - that 0.75 is annoying; BUT remove this when we have an opacity slider for all tabs
+        SPCSSAttr *css = sp_repr_css_attr_new();
+        sp_repr_css_set_property(css, "fill-opacity", "1.0");
+
+        Inkscape::XML::Document *xml_doc = document->getReprDoc();
+        SPDefs *defs = document->getDefs();
+
+        auto items= selection->items();
+        for(auto i=items.begin();i!=items.end();++i){
+
+            //FIXME: see above
+            sp_repr_css_change_recursive((*i)->getRepr(), css, "style");
+
+            // Create mesh element
+            Inkscape::XML::Node *repr = xml_doc->createElement("svg:meshgradient");
+
+            // privates are garbage-collectable
+            repr->setAttribute("inkscape:collect", "always");
+
+            // Attach to document
+            defs->getRepr()->appendChild(repr);
+            Inkscape::GC::release(repr);
+
+            // Get corresponding object
+            SPMeshGradient *mg = static_cast<SPMeshGradient *>(document->getObjectByRepr(repr));
+            mg->array.create(mg, *i, (fill_or_stroke_pref == Inkscape::FOR_FILL) ?
+                             (*i)->geometricBounds() : (*i)->visualBounds());
+
+            bool isText = SP_IS_TEXT(*i);
+            sp_style_set_property_url(*i,
+                                      ((fill_or_stroke_pref == Inkscape::FOR_FILL) ? "fill":"stroke"),
+                                      mg, isText);
+
+            (*i)->requestModified(SP_OBJECT_MODIFIED_FLAG|SP_OBJECT_STYLE_MODIFIED_FLAG);
+        }
+
+        if (css) {
+            sp_repr_css_attr_unref(css);
+            css = nullptr;
+        }
+
+        DocumentUndo::done(_desktop->getDocument(), _("Create mesh"), INKSCAPE_ICON("mesh-gradient"));
+
+        // status text; we do not track coords because this branch is run once, not all the time
+        // during drag
+        int n_objects = (int) boost::distance(selection->items());
+        message_context->setF(Inkscape::NORMAL_MESSAGE,
+                                  ngettext("<b>Gradient</b> for %d object; with <b>Ctrl</b> to snap angle",
+                                           "<b>Gradient</b> for %d objects; with <b>Ctrl</b> to snap angle", n_objects),
+                                  n_objects);
+    } else {
+        _desktop->getMessageStack()->flash(Inkscape::WARNING_MESSAGE, _("Select <b>objects</b> on which to create gradient."));
+    }
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/mesh-tool.h b/src/ui/tools/mesh-tool.h
new file mode 100644
index 0000000..de13eb1
--- /dev/null
+++ b/src/ui/tools/mesh-tool.h
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_MESH_CONTEXT_H
+#define SEEN_SP_MESH_CONTEXT_H
+
+/*
+ * Mesh drawing and editing tool
+ *
+ * Authors:
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Johan Engelen <j.b.c.engelen@ewi.utwente.nl>
+ *   Jon A. Cruz <jon@joncruz.org.
+ *   Tavmjong Bah <tavmjong@free.fr>
+ *
+ * Copyright (C) 2012 Tavmjong Bah
+ * Copyright (C) 2007 Johan Engelen
+ * Copyright (C) 2005,2010 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+#include "ui/tools/tool-base.h"
+
+#include "object/sp-mesh-array.h"
+
+#define SP_MESH_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::MeshTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_MESH_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::MeshTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+class GrDrag;
+
+namespace Inkscape {
+
+class Selection;
+class CanvasItemCurve;
+
+namespace UI {
+namespace Tools {
+
+class MeshTool : public ToolBase {
+public:
+    MeshTool(SPDesktop *desktop);
+    ~MeshTool() override;
+
+    Geom::Point origin;
+
+    Geom::Point mousepoint_doc; // stores mousepoint when over_line in doc coords
+
+    sigc::connection *selcon;
+    sigc::connection *subselcon;
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    void fit_mesh_in_bbox();
+    void corner_operation(MeshCornerOperation operation);
+
+private:
+    bool cursor_addnode;
+    bool show_handles;
+    bool edit_fill;
+    bool edit_stroke;
+
+    void selection_changed(Inkscape::Selection *sel);
+    void select_next();
+    void select_prev();
+    void new_default();
+    void split_near_point(SPItem *item, Geom::Point mouse_p, guint32 /*etime*/);
+    std::vector<CanvasItemCurve *> over_curve(Geom::Point event_p, bool first = true);
+};
+
+}
+}
+}
+
+#endif // SEEN_SP_MESH_CONTEXT_H
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/node-tool.cpp b/src/ui/tools/node-tool.cpp
new file mode 100644
index 0000000..92b6e27
--- /dev/null
+++ b/src/ui/tools/node-tool.cpp
@@ -0,0 +1,808 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * New node tool - implementation.
+ */
+/* Authors:
+ *   Krzysztof Kosiński <tweenk@gmail.com>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2009 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <iomanip>
+
+#include <glibmm/ustring.h>
+#include <glib/gi18n.h>
+#include <gdk/gdkkeysyms.h>
+
+
+
+#include "desktop.h"
+#include "document.h"
+#include "message-context.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-group.h"
+
+#include "live_effects/effect.h"
+#include "live_effects/lpeobject.h"
+
+#include "include/macros.h"
+
+#include "object/sp-clippath.h"
+#include "object/sp-item-group.h"
+#include "object/sp-mask.h"
+#include "object/sp-namedview.h"
+#include "object/sp-path.h"
+#include "object/sp-shape.h"
+#include "object/sp-text.h"
+
+#include "ui/shape-editor.h" // temporary!
+#include "ui/tool/control-point-selection.h"
+#include "ui/tool/curve-drag-point.h"
+#include "ui/tool/event-utils.h"
+#include "ui/tool/multi-path-manipulator.h"
+#include "ui/tool/path-manipulator.h"
+#include "ui/tool/selector.h"
+#include "ui/tools/node-tool.h"
+
+/** @struct NodeTool
+ *
+ * Node tool event context.
+ *
+ * @par Architectural overview of the tool
+ * @par
+ * Here's a breakdown of what each object does.
+ * - Handle: shows a handle and keeps the node type constraint (smooth / symmetric) by updating
+ *   the other handle's position when dragged. Its move() method cannot violate the constraints.
+ * - Node: keeps node type constraints for auto nodes and smooth nodes at ends of linear segments.
+ *   Its move() method cannot violate constraints. Handles linear grow and dispatches spatial grow
+ *   to MultiPathManipulator. Keeps a reference to its NodeList.
+ * - NodeList: exposes an iterator-based interface to nodes. It is possible to obtain an iterator
+ *   to a node from the node. Keeps a reference to its SubpathList.
+ * - SubpathList: list of NodeLists that represents an editable pathvector. Keeps a reference
+ *   to its PathManipulator.
+ * - PathManipulator: performs most of the single-path actions like reverse subpaths,
+ *   delete segment, shift selection, etc. Keeps a reference to MultiPathManipulator.
+ * - MultiPathManipulator: performs additional operations for actions that are not per-path,
+ *   for example node joins and segment joins. Tracks the control transforms for PMs that edit
+ *   clipping paths and masks. It is more or less equivalent to ShapeEditor and in the future
+ *   it might handle all shapes. Handles XML commit of actions that affect all paths or
+ *   the node selection and removes PathManipulators that have no nodes left after e.g. node
+ *   deletes.
+ * - ControlPointSelection: keeps track of node selection and a set of nodes that can potentially
+ *   be selected. There can be more than one selection. Performs actions that require no
+ *   knowledge about the path, only about the nodes, like dragging and transforms. It is not
+ *   specific to nodes and can accommodate any control point derived from SelectableControlPoint.
+ *   Transforms nodes in response to transform handle events.
+ * - TransformHandleSet: displays nodeset transform handles and emits transform events. The aim
+ *   is to eventually use a common class for object and control point transforms.
+ * - SelectableControlPoint: base for any type of selectable point. It can belong to only one
+ *   selection.
+ *
+ * @par Functionality that resides in weird places
+ * @par
+ *
+ * This list is probably incomplete.
+ * - Curve dragging: CurveDragPoint, controlled by PathManipulator
+ * - Single handle shortcuts: MultiPathManipulator::event(), ModifierTracker
+ * - Linear and spatial grow: Node, spatial grow routed to ControlPointSelection
+ * - Committing handle actions performed with the mouse: PathManipulator
+ * - Sculpting: ControlPointSelection
+ *
+ * @par Plans for the future
+ * @par
+ * - MultiPathManipulator should become a generic shape editor that manages all active manipulator,
+ *   more or less like the old ShapeEditor.
+ * - Knotholder should be rewritten into one manipulator class per shape, using the control point
+ *   classes. Interesting features like dragging rectangle sides could be added along the way.
+ * - Better handling of clip and mask editing, particularly in response to undo.
+ * - High level refactoring of the event context hierarchy. All aspects of tools, like toolbox
+ *   controls, icons, event handling should be collected in one class, though each aspect
+ *   of a tool might be in an separate class for better modularity. The long term goal is to allow
+ *   tools to be defined in extensions or shared library plugins.
+ */
+
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+Inkscape::CanvasItemGroup *create_control_group(SPDesktop *desktop)
+{
+    auto group = new Inkscape::CanvasItemGroup(desktop->getCanvasControls());
+    group->set_name("CanvasItemGroup:NodeTool");
+    return group;
+}
+
+NodeTool::NodeTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/nodes", "node.svg")
+{
+    this->_path_data = new Inkscape::UI::PathSharedData();
+
+    Inkscape::UI::PathSharedData &data = *this->_path_data;
+    data.node_data.desktop = desktop;
+
+    // selector has to be created here, so that its hidden control point is on the bottom
+    this->_selector = new Inkscape::UI::Selector(desktop);
+
+    // Prepare canvas groups for controls. This guarantees correct z-order, so that
+    // for example a dragpoint won't obscure a node
+    data.outline_group          = create_control_group(desktop);
+    data.node_data.handle_line_group = new Inkscape::CanvasItemGroup(desktop->getCanvasControls());
+    data.dragpoint_group        = create_control_group(desktop);
+    _transform_handle_group     = create_control_group(desktop);
+    data.node_data.node_group   = create_control_group(desktop);
+    data.node_data.handle_group = create_control_group(desktop);
+
+    data.node_data.handle_line_group->set_name("CanvasItemGroup:NodeTool:handle_line_group");
+
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    this->_selection_changed_connection.disconnect();
+    this->_selection_changed_connection =
+        selection->connectChanged(sigc::mem_fun(this, &NodeTool::selection_changed));
+
+    this->_mouseover_changed_connection.disconnect();
+    this->_mouseover_changed_connection = 
+        Inkscape::UI::ControlPoint::signal_mouseover_change.connect(sigc::mem_fun(this, &NodeTool::mouseover_changed));
+
+    if (this->_transform_handle_group) {
+        this->_selected_nodes = new Inkscape::UI::ControlPointSelection(desktop, this->_transform_handle_group);
+    }
+    data.node_data.selection = this->_selected_nodes;
+
+    this->_multipath = new Inkscape::UI::MultiPathManipulator(data, this->_selection_changed_connection);
+
+    this->_selector->signal_point.connect(sigc::mem_fun(this, &NodeTool::select_point));
+    this->_selector->signal_area.connect(sigc::mem_fun(this, &NodeTool::select_area));
+
+    this->_multipath->signal_coords_changed.connect([=](){
+        desktop->emit_control_point_selected(this, _selected_nodes);
+    });
+
+    this->_selected_nodes->signal_selection_changed.connect(
+        // Hide both signal parameters and bind the function parameter to 0
+        // sigc::signal<void, SelectableControlPoint *, bool>
+        // <=>
+        // void update_tip(GdkEvent *event)
+        sigc::hide(sigc::hide(sigc::bind(
+                sigc::mem_fun(this, &NodeTool::update_tip),
+                (GdkEvent*)nullptr
+        )))
+    );
+
+    this->cursor_drag = false;
+    this->show_transform_handles = true;
+    this->single_node_transform_handles = false;
+    this->flash_tempitem = nullptr;
+    this->flashed_item = nullptr;
+    this->_last_over = nullptr;
+
+    // read prefs before adding items to selection to prevent momentarily showing the outline
+    sp_event_context_read(this, "show_handles");
+    sp_event_context_read(this, "show_outline");
+    sp_event_context_read(this, "live_outline");
+    sp_event_context_read(this, "live_objects");
+    sp_event_context_read(this, "show_path_direction");
+    sp_event_context_read(this, "show_transform_handles");
+    sp_event_context_read(this, "single_node_transform_handles");
+    sp_event_context_read(this, "edit_clipping_paths");
+    sp_event_context_read(this, "edit_masks");
+
+    this->selection_changed(selection);
+    this->update_tip(nullptr);
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/nodes/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/nodes/gradientdrag")) {
+        this->enableGrDrag();
+    }
+
+    desktop->emit_control_point_selected(this, _selected_nodes); // sets the coord entry fields to inactive
+    sp_update_helperpath(desktop);
+}
+
+NodeTool::~NodeTool()
+{
+    this->_selected_nodes->clear();
+
+    this->enableGrDrag(false);
+
+    if (this->flash_tempitem) {
+        _desktop->remove_temporary_canvasitem(this->flash_tempitem);
+    }
+    for (auto hp : this->_helperpath_tmpitem) {
+        _desktop->remove_temporary_canvasitem(hp);
+    }
+    this->_selection_changed_connection.disconnect();
+    // this->_selection_modified_connection.disconnect();
+    this->_mouseover_changed_connection.disconnect();
+
+    delete this->_multipath;
+    delete this->_selected_nodes;
+    delete this->_selector;
+
+    Inkscape::UI::PathSharedData &data = *this->_path_data;
+    delete data.node_data.node_group;
+    delete data.node_data.handle_group;
+    delete data.node_data.handle_line_group;
+    delete data.outline_group;
+    delete data.dragpoint_group;
+    delete _transform_handle_group;
+}
+
+void NodeTool::deleteSelected()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    // This takes care of undo internally
+    _multipath->deleteNodes(prefs->getBool("/tools/nodes/delete_preserves_shape", true));
+}
+
+// show helper paths of the applied LPE, if any
+void sp_update_helperpath(SPDesktop *desktop)
+{
+    if (!desktop) {
+        return;
+    }
+
+    Inkscape::UI::Tools::NodeTool *nt = dynamic_cast<Inkscape::UI::Tools::NodeTool*>(desktop->event_context);
+    if (!nt) {
+        // We remove this warning and just stop execution
+        // because we are updating helper paths also from LPE dialog so we not unsure the tool used
+        // std::cerr << "sp_update_helperpath called when Node Tool not active!" << std::endl;
+        return;
+    }
+
+    Inkscape::Selection *selection = desktop->getSelection();
+    for (auto hp : nt->_helperpath_tmpitem) {
+        desktop->remove_temporary_canvasitem(hp);
+    }
+    nt->_helperpath_tmpitem.clear();
+    std::vector<SPItem *> vec(selection->items().begin(), selection->items().end());
+    std::vector<std::pair<Geom::PathVector, Geom::Affine>> cs;
+    for (auto item : vec) {
+        SPLPEItem *lpeitem = dynamic_cast<SPLPEItem *>(item);
+        if (lpeitem && lpeitem->hasPathEffectRecursive()) {
+            Inkscape::LivePathEffect::Effect *lpe = lpeitem->getCurrentLPE();
+            if (lpe && lpe->isVisible()/* && lpe->showOrigPath()*/) {
+                std::vector<Geom::Point> selectedNodesPositions;
+                if (nt->_selected_nodes) {
+                    Inkscape::UI::ControlPointSelection *selectionNodes = nt->_selected_nodes;
+                    for (auto selectionNode : *selectionNodes) {
+                        Inkscape::UI::Node *n = dynamic_cast<Inkscape::UI::Node *>(selectionNode);
+                        selectedNodesPositions.push_back(n->position());
+                    }
+                }
+                lpe->setSelectedNodePoints(selectedNodesPositions);
+                lpe->setCurrentZoom(desktop->current_zoom());
+                auto c = std::make_unique<SPCurve>();
+                std::vector<Geom::PathVector> cs = lpe->getCanvasIndicators(lpeitem);
+                for (auto &p : cs) {
+                    p *= desktop->dt2doc();
+                    c->append(p);
+                }
+                if (!c->is_empty()) {
+                    auto helperpath = new Inkscape::CanvasItemBpath(desktop->getCanvasTemp(), c.get(), true);
+                    helperpath->set_stroke(0x0000ff9a);
+                    helperpath->set_fill(0x0, SP_WIND_RULE_NONZERO); // No fill
+
+                    nt->_helperpath_tmpitem.emplace_back(desktop->add_temporary_canvasitem(helperpath, 0));
+                }
+            }
+        }
+    }
+}
+
+void NodeTool::set(const Inkscape::Preferences::Entry& value) {
+    Glib::ustring entry_name = value.getEntryName();
+
+    if (entry_name == "show_handles") {
+        this->show_handles = value.getBool(true);
+        this->_multipath->showHandles(this->show_handles);
+    } else if (entry_name == "show_outline") {
+        this->show_outline = value.getBool();
+        this->_multipath->showOutline(this->show_outline);
+    } else if (entry_name == "live_outline") {
+        this->live_outline = value.getBool();
+        this->_multipath->setLiveOutline(this->live_outline);
+    } else if (entry_name == "live_objects") {
+        this->live_objects = value.getBool();
+        this->_multipath->setLiveObjects(this->live_objects);
+    } else if (entry_name == "show_path_direction") {
+        this->show_path_direction = value.getBool();
+        this->_multipath->showPathDirection(this->show_path_direction);
+    } else if (entry_name == "show_transform_handles") {
+        this->show_transform_handles = value.getBool(true);
+        this->_selected_nodes->showTransformHandles(
+            this->show_transform_handles, this->single_node_transform_handles);
+    } else if (entry_name == "single_node_transform_handles") {
+        this->single_node_transform_handles = value.getBool();
+        this->_selected_nodes->showTransformHandles(
+            this->show_transform_handles, this->single_node_transform_handles);
+    } else if (entry_name == "edit_clipping_paths") {
+        this->edit_clipping_paths = value.getBool();
+        this->selection_changed(_desktop->selection);
+    } else if (entry_name == "edit_masks") {
+        this->edit_masks = value.getBool();
+        this->selection_changed(_desktop->selection);
+    } else {
+        ToolBase::set(value);
+    }
+}
+
+/** Recursively collect ShapeRecords */
+static
+void gather_items(NodeTool *nt, SPItem *base, SPObject *obj, Inkscape::UI::ShapeRole role,
+    std::set<Inkscape::UI::ShapeRecord> &s)
+{
+    using namespace Inkscape::UI;
+
+    if (!obj) {
+        return;
+    }
+
+    //XML Tree being used directly here while it shouldn't be.
+    if (role != SHAPE_ROLE_NORMAL && (SP_IS_GROUP(obj) || SP_IS_OBJECTGROUP(obj))) {
+        for (auto& c: obj->children) {
+            gather_items(nt, base, &c, role, s);
+        }
+    } else if (SP_IS_ITEM(obj)) {
+        SPObject *object = obj;
+        SPItem *item = dynamic_cast<SPItem *>(obj);
+        ShapeRecord r;
+        r.object = object;
+        // TODO add support for objectBoundingBox
+        r.edit_transform = base ? base->i2doc_affine() : Geom::identity();
+        r.role = role;
+
+        if (s.insert(r).second) {
+            // this item was encountered the first time
+            if (nt->edit_clipping_paths) {
+                gather_items(nt, item, item->getClipObject(), SHAPE_ROLE_CLIPPING_PATH, s);
+            }
+
+            if (nt->edit_masks) {
+                gather_items(nt, item, item->getMaskObject(), SHAPE_ROLE_MASK, s);
+            }
+        }
+    }
+}
+
+void NodeTool::selection_changed(Inkscape::Selection *sel) {
+    using namespace Inkscape::UI;
+
+    std::set<ShapeRecord> shapes;
+
+    auto items= sel->items();
+    for(auto i=items.begin();i!=items.end();++i){
+        SPItem *item = *i;
+        if (item) {
+            gather_items(this, nullptr, item, SHAPE_ROLE_NORMAL, shapes);
+        }
+    }
+
+    // use multiple ShapeEditors for now, to allow editing many shapes at once
+    // needs to be rethought
+    for (auto i = this->_shape_editors.begin(); i != this->_shape_editors.end();) {
+        ShapeRecord s;
+        s.object = dynamic_cast<SPObject *>(i->first);
+
+        if (shapes.find(s) == shapes.end()) {
+            this->_shape_editors.erase(i++);
+        } else {
+            ++i;
+        }
+    }
+
+    for (const auto & r : shapes) {
+        if (this->_shape_editors.find(SP_ITEM(r.object)) == this->_shape_editors.end()) {
+            auto si = std::make_unique<ShapeEditor>(_desktop, r.edit_transform);
+            SPItem *item = SP_ITEM(r.object);
+            si->set_item(item);
+            this->_shape_editors.insert({item, std::move(si)});
+        }
+    }
+
+    std::vector<SPItem *> vec(sel->items().begin(), sel->items().end());
+    _previous_selection = _current_selection;
+    _current_selection = vec;
+    this->_multipath->setItems(shapes);
+    this->update_tip(nullptr);
+    sp_update_helperpath(_desktop);
+    // This not need to be called canvas is updated on selection change on setItems
+    // _desktop->updateNow();
+}
+
+bool NodeTool::root_handler(GdkEvent* event) {
+    /* things to handle here:
+     * 1. selection of items
+     * 2. passing events to manipulators
+     * 3. some keybindings
+     */
+    using namespace Inkscape::UI; // pull in event helpers
+
+    Inkscape::Selection *selection = _desktop->selection;
+    static Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (this->_multipath->event(this, event)) {
+        return true;
+    }
+
+    if (this->_selector->event(this, event)) {
+        return true;
+    }
+
+    if (this->_selected_nodes->event(this, event)) {
+        return true;
+    }
+
+    switch (event->type)
+    {
+
+    case GDK_MOTION_NOTIFY: {
+        sp_update_helperpath(_desktop);
+        SPItem *over_item = nullptr;
+        over_item = sp_event_context_find_item(_desktop, event_point(event->button), FALSE, TRUE);
+
+        Geom::Point const motion_w(event->motion.x, event->motion.y);
+        Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+        SnapManager &m = _desktop->namedview->snap_manager;
+
+        // We will show a pre-snap indication for when the user adds a node through double-clicking
+        // Adding a node will only work when a path has been selected; if that's not the case then snapping is useless
+        if (!_desktop->selection->isEmpty()) {
+            if (!(event->motion.state & GDK_SHIFT_MASK)) {
+                m.setup(_desktop);
+                Inkscape::SnapCandidatePoint scp(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                m.preSnap(scp, true);
+                m.unSetup();
+            }
+        }
+
+        if (over_item && over_item != this->_last_over) {
+            this->_last_over = over_item;
+            //ink_node_tool_update_tip(nt, event);
+            this->update_tip(event);
+        }
+        // create pathflash outline
+
+        if (prefs->getBool("/tools/nodes/pathflash_enabled")) {
+            // We want to reset flashed item to can highligh again previous one
+            if (!over_item && this->flashed_item) {
+                this->flashed_item = nullptr;
+                break;
+            }
+            if (!over_item || over_item == this->flashed_item) {
+                break;
+            }
+
+            if (!prefs->getBool("/tools/nodes/pathflash_selected") && over_item && selection->includes(over_item)) {
+                break;
+            }
+
+            if (this->flash_tempitem) {
+                _desktop->remove_temporary_canvasitem(this->flash_tempitem);
+                this->flash_tempitem = nullptr;
+                this->flashed_item = nullptr;
+            }
+
+            auto shape = dynamic_cast<SPShape const *>(over_item);
+            if (!shape) {
+                break; // for now, handle only shapes
+            }
+
+            this->flashed_item = over_item;
+            auto c = SPCurve::copy(shape->curveForEdit());
+
+            if (!c) {
+                break; // break out when curve doesn't exist
+            }
+
+            c->transform(over_item->i2dt_affine());
+
+            auto flash = new Inkscape::CanvasItemBpath(_desktop->getCanvasTemp(), c.get(), true);
+            flash->set_stroke(over_item->highlight_color());
+            flash->set_fill(0x0, SP_WIND_RULE_NONZERO); // No fill.
+            flash_tempitem =
+                _desktop->add_temporary_canvasitem(flash, prefs->getInt("/tools/nodes/pathflash_timeout", 500));
+        }
+        break; // do not return true, because we need to pass this event to the parent context
+               // otherwise some features cease to work
+    }
+
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval(&event->key))
+        {
+        case GDK_KEY_Escape: // deselect everything
+            if (this->_selected_nodes->empty()) {
+                Inkscape::SelectionHelper::selectNone(_desktop);
+            } else {
+                this->_selected_nodes->clear();
+            }
+            //ink_node_tool_update_tip(nt, event);
+            this->update_tip(event);
+            return TRUE;
+
+        case GDK_KEY_a:
+        case GDK_KEY_A:
+            if (held_control(event->key) && held_alt(event->key)) {
+                this->_selected_nodes->selectAll();
+                // Ctrl+A is handled in selection-chemistry.cpp via verb
+                //ink_node_tool_update_tip(nt, event);
+                this->update_tip(event);
+                return TRUE;
+            }
+            break;
+
+        case GDK_KEY_h:
+        case GDK_KEY_H:
+            if (held_only_control(event->key)) {
+                Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+                prefs->setBool("/tools/nodes/show_handles", !this->show_handles);
+                return TRUE;
+            }
+            break;
+
+        case GDK_KEY_Tab:
+            _multipath->shiftSelection(1);
+            return TRUE;
+            break;
+        case GDK_KEY_ISO_Left_Tab:
+            _multipath->shiftSelection(-1);
+            return TRUE;
+            break;
+
+        default:
+            break;
+        }
+        //ink_node_tool_update_tip(nt, event);
+        this->update_tip(event);
+        break;
+
+    case GDK_KEY_RELEASE:
+        //ink_node_tool_update_tip(nt, event);
+        this->update_tip(event);
+        break;
+
+    case GDK_BUTTON_RELEASE:
+        if (this->_selector->doubleClicked()) {
+            // If the selector received the doubleclick event, then we're at some distance from
+            // the path; otherwise, the doubleclick event would have been received by
+            // CurveDragPoint; we will insert nodes into the path anyway but only if we can snap
+            // to the path. Otherwise the position would not be very well defined.
+            if (!(event->motion.state & GDK_SHIFT_MASK)) {
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                Inkscape::SnapCandidatePoint scp(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+                Inkscape::SnappedPoint sp = m.freeSnap(scp, Geom::OptRect(), true);
+                m.unSetup();
+
+                if (sp.getSnapped()) {
+                    // The first click of the double click will have cleared the path selection, because
+                    // we clicked aside of the path. We need to undo this on double click
+                    Inkscape::Selection *selection = _desktop->getSelection();
+                    selection->addList(_previous_selection);
+
+                    // The selection has been restored, and the signal selection_changed has been emitted,
+                    // which has again forced a restore of the _mmap variable of the MultiPathManipulator (this->_multipath)
+                    // Now we can insert the new nodes as if nothing has happened!
+                    this->_multipath->insertNode(_desktop->d2w(sp.getPoint()));
+                }
+            }
+        }
+        break;
+
+    default:
+        break;
+    }
+    // we really dont want to stop any node operation we want to success all even the time consume it
+
+    return ToolBase::root_handler(event);
+}
+
+void NodeTool::update_tip(GdkEvent *event) {
+    using namespace Inkscape::UI;
+    if (event && (event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE)) {
+        unsigned new_state = state_after_event(event);
+
+        if (new_state == event->key.state) {
+            return;
+        }
+
+        if (state_held_shift(new_state)) {
+            if (this->_last_over) {
+                this->message_context->set(Inkscape::NORMAL_MESSAGE,
+                    C_("Node tool tip", "<b>Shift</b>: drag to add nodes to the selection, "
+                    "click to toggle object selection"));
+            } else {
+                this->message_context->set(Inkscape::NORMAL_MESSAGE,
+                    C_("Node tool tip", "<b>Shift</b>: drag to add nodes to the selection"));
+            }
+
+            return;
+        }
+    }
+
+    unsigned sz = this->_selected_nodes->size();
+    unsigned total = this->_selected_nodes->allPoints().size();
+
+    if (sz != 0) {
+        // TODO: Use Glib::ustring::compose and remove the useless copy after string freeze
+        char *nodestring_temp = g_strdup_printf(
+                ngettext("<b>%u of %u</b> node selected.", "<b>%u of %u</b> nodes selected.", total),
+                sz, total);
+        Glib::ustring nodestring(nodestring_temp);
+        g_free(nodestring_temp);
+
+        if (sz == 2) {
+            // if there are only two nodes selected, display the angle
+            // of a line going through them relative to the X axis.
+            Inkscape::UI::ControlPointSelection::Set &selection_nodes = this->_selected_nodes->allPoints();
+            std::vector<Geom::Point> positions;
+            for (auto selection_node : selection_nodes) {
+                if (selection_node->selected()) {
+                    Inkscape::UI::Node *n = dynamic_cast<Inkscape::UI::Node *>(selection_node);
+                    positions.push_back(n->position());
+                }
+            }
+            g_assert(positions.size() == 2);
+            const double angle = Geom::deg_from_rad(Geom::Line(positions[0], positions[1]).angle());
+            nodestring += " ";
+            nodestring += Glib::ustring::compose(_("Angle: %1°."),
+                                                 Glib::ustring::format(std::fixed, std::setprecision(2), angle));
+        }
+
+        if (this->_last_over) {
+            // TRANSLATORS: The %s below is where the "%u of %u nodes selected" sentence gets put
+            char *dyntip = g_strdup_printf(C_("Node tool tip",
+                "%s Drag to select nodes, click to edit only this object (more: Shift)"),
+                nodestring.c_str());
+            this->message_context->set(Inkscape::NORMAL_MESSAGE, dyntip);
+            g_free(dyntip);
+        } else {
+            char *dyntip = g_strdup_printf(C_("Node tool tip",
+                "%s Drag to select nodes, click clear the selection"),
+                nodestring.c_str());
+            this->message_context->set(Inkscape::NORMAL_MESSAGE, dyntip);
+            g_free(dyntip);
+        }
+    } else if (!this->_multipath->empty()) {
+        if (this->_last_over) {
+            this->message_context->set(Inkscape::NORMAL_MESSAGE, C_("Node tool tip",
+                "Drag to select nodes, click to edit only this object"));
+        } else {
+            this->message_context->set(Inkscape::NORMAL_MESSAGE, C_("Node tool tip",
+                "Drag to select nodes, click to clear the selection"));
+        }
+    } else {
+        if (this->_last_over) {
+            this->message_context->set(Inkscape::NORMAL_MESSAGE, C_("Node tool tip",
+                "Drag to select objects to edit, click to edit this object (more: Shift)"));
+        } else {
+            this->message_context->set(Inkscape::NORMAL_MESSAGE, C_("Node tool tip",
+                "Drag to select objects to edit"));
+        }
+    }
+}
+
+/**
+ * @param sel Area in desktop coordinates
+ */
+void NodeTool::select_area(Geom::Rect const &sel, GdkEventButton *event) {
+    using namespace Inkscape::UI;
+    
+    if (this->_multipath->empty()) {
+        // if multipath is empty, select rubberbanded items rather than nodes
+        Inkscape::Selection *selection = _desktop->selection;
+        auto sel_doc = _desktop->dt2doc() * sel;
+        std::vector<SPItem *> items = _desktop->getDocument()->getItemsInBox(_desktop->dkey, sel_doc);
+        selection->setList(items);
+    } else {
+        bool shift = held_shift(*event);
+        bool ctrl = held_control(*event);
+
+        if (!shift) {
+            // A/C. No modifier, selects all nodes, or selects all other nodes.
+            this->_selected_nodes->clear();
+        }
+        if (shift && ctrl) {
+            // D. Shift+Ctrl pressed, removes nodes under box from existing selection.
+            this->_selected_nodes->selectArea(sel, true);
+        } else {
+            // A/B/C. Adds nodes under box to existing selection.
+            this->_selected_nodes->selectArea(sel);
+            if (ctrl) {
+                // C. Selects the inverse of all nodes under the box.
+                this->_selected_nodes->invertSelection();
+            }
+        }
+    }
+}
+
+void NodeTool::select_point(Geom::Point const &/*sel*/, GdkEventButton *event) {
+    using namespace Inkscape::UI; // pull in event helpers
+    
+    if (!event) {
+        return;
+    }
+
+    if (event->button != 1) {
+        return;
+    }
+
+    Inkscape::Selection *selection = _desktop->selection;
+
+    SPItem *item_clicked = sp_event_context_find_item (_desktop, event_point(*event),
+                    (event->state & GDK_MOD1_MASK) && !(event->state & GDK_CONTROL_MASK), TRUE);
+
+    if (item_clicked == nullptr) { // nothing under cursor
+        // if no Shift, deselect
+        // if there are nodes selected, the first click should deselect the nodes
+        // and the second should deselect the items
+        if (!state_held_shift(event->state)) {
+            if (this->_selected_nodes->empty()) {
+                selection->clear();
+            } else {
+                this->_selected_nodes->clear();
+            }
+        }
+    } else {
+        if (held_shift(*event)) {
+            selection->toggle(item_clicked);
+        } else {
+            selection->set(item_clicked);
+        }
+        // This not need to be called canvas is updated on selection change
+        // _desktop->updateNow();
+    }
+}
+
+void NodeTool::mouseover_changed(Inkscape::UI::ControlPoint *p) {
+    using Inkscape::UI::CurveDragPoint;
+
+    CurveDragPoint *cdp = dynamic_cast<CurveDragPoint*>(p);
+
+    if (cdp && !this->cursor_drag) {
+        this->set_cursor("node-mouseover.svg");
+        this->cursor_drag = true;
+    } else if (!cdp && this->cursor_drag) {
+        this->set_cursor("node.svg");
+        this->cursor_drag = false;
+    }
+}
+
+void NodeTool::handleControlUiStyleChange() {
+    this->_multipath->updateHandles();
+}
+
+}
+}
+}
+
+//} // anonymous namespace
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/node-tool.h b/src/ui/tools/node-tool.h
new file mode 100644
index 0000000..8a4fbcc
--- /dev/null
+++ b/src/ui/tools/node-tool.h
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief New node tool with support for multiple path editing
+ */
+/* Authors:
+ *   Krzysztof Kosiński <tweenk@gmail.com>
+ *
+ * Copyright (C) 2009 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SEEN_UI_TOOL_NODE_TOOL_H
+#define SEEN_UI_TOOL_NODE_TOOL_H
+
+#include <glib.h>
+#include "ui/tools/tool-base.h"
+
+// we need it to call it from Live Effect
+#include "selection.h"
+
+namespace Inkscape {
+    namespace Display {
+        class TemporaryItem;
+    }
+
+    namespace UI {
+        class MultiPathManipulator;
+        class ControlPointSelection;
+        class Selector;
+        class ControlPoint;
+
+        struct PathSharedData;
+    }
+}
+
+struct SPCanvasGroup;
+
+#define INK_NODE_TOOL(obj) (dynamic_cast<Inkscape::UI::Tools::NodeTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define INK_IS_NODE_TOOL(obj) (dynamic_cast<const Inkscape::UI::Tools::NodeTool*>((const Inkscape::UI::Tools::ToolBase*)obj))
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class NodeTool : public ToolBase {
+public:
+    NodeTool(SPDesktop *desktop);
+    ~NodeTool() override;
+
+    Inkscape::UI::ControlPointSelection* _selected_nodes = nullptr;
+    Inkscape::UI::MultiPathManipulator* _multipath = nullptr;
+    std::vector<Inkscape::Display::TemporaryItem *> _helperpath_tmpitem;
+    std::map<SPItem *, std::unique_ptr<ShapeEditor>> _shape_editors;
+
+    bool edit_clipping_paths = false;
+    bool edit_masks = false;
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    void deleteSelected();
+private:
+    sigc::connection _selection_changed_connection;
+    sigc::connection _mouseover_changed_connection;
+
+    SPItem *flashed_item = nullptr;
+
+    Inkscape::Display::TemporaryItem *flash_tempitem = nullptr;
+    Inkscape::UI::Selector* _selector = nullptr;
+    Inkscape::UI::PathSharedData* _path_data = nullptr;
+    Inkscape::CanvasItemGroup *_transform_handle_group = nullptr;
+    SPItem *_last_over = nullptr;
+
+    bool cursor_drag = false;
+    bool show_handles = false;
+    bool show_outline =false;
+    bool live_outline = false;
+    bool live_objects = false;
+    bool show_path_direction = false;
+    bool show_transform_handles = false;
+    bool single_node_transform_handles = false;
+
+    std::vector<SPItem*> _current_selection;
+    std::vector<SPItem*> _previous_selection;
+
+    void selection_changed(Inkscape::Selection *sel);
+
+    void select_area(Geom::Rect const &sel, GdkEventButton *event);
+    void select_point(Geom::Point const &sel, GdkEventButton *event);
+    void mouseover_changed(Inkscape::UI::ControlPoint *p);
+    void update_tip(GdkEvent *event);
+    void handleControlUiStyleChange();
+};
+void sp_update_helperpath(SPDesktop *desktop);
+}
+
+}
+}
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/pages-tool.cpp b/src/ui/tools/pages-tool.cpp
new file mode 100644
index 0000000..095ca96
--- /dev/null
+++ b/src/ui/tools/pages-tool.cpp
@@ -0,0 +1,593 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Page editing tool
+ *
+ * Authors:
+ *   Martin Owens <doctormo@geek-2.com>
+ *
+ * Copyright (C) 2021 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "pages-tool.h"
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include "desktop.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-curve.h"
+#include "display/control/canvas-item-group.h"
+#include "display/control/canvas-item-rect.h"
+#include "display/control/snap-indicator.h"
+#include "document-undo.h"
+#include "include/macros.h"
+#include "object/sp-page.h"
+#include "path/path-outline.h"
+#include "pure-transform.h"
+#include "rubberband.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+#include "snap-preferences.h"
+#include "snap.h"
+#include "ui/icon-names.h"
+#include "ui/knot/knot.h"
+#include "ui/widget/canvas.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+PagesTool::PagesTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/pages", "select.svg")
+{
+    // Stash the regular object selection so we don't modify them in base-tools root handler.
+    desktop->selection->setBackup();
+    desktop->selection->clear();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    drag_tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    if (resize_knots.empty()) {
+        for (int i = 0; i < 4; i++) {
+            auto knot = new SPKnot(desktop, _("Resize page"), Inkscape::CANVAS_ITEM_CTRL_TYPE_SHAPER, "PageTool:Resize");
+            knot->setShape(Inkscape::CANVAS_ITEM_CTRL_SHAPE_SQUARE);
+            knot->setFill(0xffffff00, 0x0000ff00, 0x000000ff, 0x000000ff);
+            knot->setSize(9);
+            knot->setAnchor(SP_ANCHOR_CENTER);
+            knot->updateCtrl();
+            knot->hide();
+            knot->moved_signal.connect(sigc::mem_fun(*this, &PagesTool::resizeKnotMoved));
+            knot->ungrabbed_signal.connect(sigc::mem_fun(*this, &PagesTool::resizeKnotFinished));
+            if (auto window = desktop->getCanvas()->get_window()) {
+                knot->setCursor(SP_KNOT_STATE_DRAGGING, this->get_cursor(window, "page-resizing.svg"));
+                knot->setCursor(SP_KNOT_STATE_MOUSEOVER, this->get_cursor(window, "page-resize.svg"));
+            }
+            resize_knots.push_back(knot);
+        }
+    }
+
+    if (!visual_box) {
+        visual_box = new Inkscape::CanvasItemRect(desktop->getCanvasControls());
+        visual_box->set_stroke(0x0000ff7f);
+        visual_box->hide();
+    }
+    if (!drag_group) {
+        drag_group = new Inkscape::CanvasItemGroup(desktop->getCanvasTemp());
+        drag_group->set_name("CanvasItemGroup:PagesDragShapes");
+    }
+
+    _doc_replaced_connection = desktop->connectDocumentReplaced([=](SPDesktop *desktop, SPDocument *doc) {
+        connectDocument(desktop->getDocument());
+    });
+    connectDocument(desktop->getDocument());
+
+    _zoom_connection = desktop->signal_zoom_changed.connect([=](double) {
+        // This readjusts the knot on zoom because the viewbox position
+        // becomes detached on zoom, likely a precision problem.
+        if (!desktop->getDocument()->getPageManager().hasPages()) {
+            selectionChanged(desktop->getDocument(), nullptr);
+        }
+    });
+}
+
+
+PagesTool::~PagesTool()
+{
+    connectDocument(nullptr);
+
+    ungrabCanvasEvents();
+
+    _desktop->selection->restoreBackup();
+
+    if (visual_box) {
+        delete visual_box;
+        visual_box = nullptr;
+    }
+
+    for (auto knot : resize_knots) {
+        delete knot;
+    }
+    resize_knots.clear();
+
+    if (drag_group) {
+        delete drag_group;
+        drag_group = nullptr;
+        drag_shapes.clear(); // Already deleted by group
+    }
+
+    _doc_replaced_connection.disconnect();
+    _zoom_connection.disconnect();
+}
+
+void PagesTool::resizeKnotSet(Geom::Rect rect)
+{
+    for (int i = 0; i < resize_knots.size(); i++) {
+        resize_knots[i]->moveto(rect.corner(i));
+        resize_knots[i]->show();
+    }
+}
+
+void PagesTool::resizeKnotMoved(SPKnot *knot, Geom::Point const &ppointer, guint state)
+{
+    Geom::Rect rect;
+
+    auto page = _desktop->getDocument()->getPageManager().getSelected();
+    if (page) {
+        // Resizing a specific selected page
+        rect = page->getDesktopRect();
+    } else if (auto document = _desktop->getDocument()) {
+        // Resizing the naked viewBox
+        rect = *(document->preferredBounds());
+    }
+
+    int index;
+    for (index = 0; index < 4; index++) {
+        if (knot == resize_knots[index]) {
+            break;
+        }
+    }
+    Geom::Point start = rect.corner(index);
+    Geom::Point point = getSnappedResizePoint(knot->position(), state, start, page);
+
+    if (point != start) {
+        if (index % 3 == 0)
+            rect[Geom::X].setMin(point[Geom::X]);
+        else
+            rect[Geom::X].setMax(point[Geom::X]);
+
+        if (index < 2)
+            rect[Geom::Y].setMin(point[Geom::Y]);
+        else
+            rect[Geom::Y].setMax(point[Geom::Y]);
+
+        visual_box->show();
+        visual_box->set_rect(rect);
+        on_screen_rect = Geom::Rect(rect);
+        mouse_is_pressed = true;
+    }
+}
+
+/**
+ * Resize snapping allows knot and tool point snapping consistency.
+ */
+Geom::Point PagesTool::getSnappedResizePoint(Geom::Point point, guint state, Geom::Point origin, SPObject *target)
+{
+    if (!(state & GDK_SHIFT_MASK)) {
+        SnapManager &snap_manager = _desktop->namedview->snap_manager;
+        snap_manager.setup(_desktop, true, target);
+        Inkscape::SnapCandidatePoint scp(point, Inkscape::SNAPSOURCE_PAGE_CORNER);
+        scp.addOrigin(origin);
+        Inkscape::SnappedPoint sp = snap_manager.freeSnap(scp);
+        point = sp.getPoint();
+        snap_manager.unSetup();
+    }
+    return point;
+}
+
+void PagesTool::resizeKnotFinished(SPKnot *knot, guint state)
+{
+    auto document = _desktop->getDocument();
+    auto page = document->getPageManager().getSelected();
+    if (on_screen_rect) {
+        if (!page || page->isViewportPage()) {
+            // Adjust viewport so it's scroll adjustment is correct
+            *on_screen_rect *= document->dt2doc();
+        }
+        document->getPageManager().fitToRect(*on_screen_rect, page);
+        Inkscape::DocumentUndo::done(document, "Resize page", INKSCAPE_ICON("tool-pages"));
+        on_screen_rect = {};
+    }
+    visual_box->hide();
+    mouse_is_pressed = false;
+}
+
+bool PagesTool::root_handler(GdkEvent *event)
+{
+    bool ret = false;
+    auto &page_manager = _desktop->getDocument()->getPageManager();
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS: {
+            if (event->button.button == 1) {
+                mouse_is_pressed = true;
+                drag_origin_w = Geom::Point(event->button.x, event->button.y);
+                drag_origin_dt = _desktop->w2d(drag_origin_w);
+                ret = true;
+                if (auto page = pageUnder(drag_origin_dt, false)) {
+                    // Select the clicked on page. Manager ignores the same-page.
+                    _desktop->getDocument()->getPageManager().selectPage(page);
+                    this->set_cursor("page-dragging.svg");
+                } else if (viewboxUnder(drag_origin_dt)) {
+                    dragging_viewbox = true;
+                    this->set_cursor("page-dragging.svg");
+                } else {
+                    drag_origin_dt = getSnappedResizePoint(drag_origin_dt, event->button.state, Geom::Point(0, 0));
+                }
+            }
+            break;
+        }
+        case GDK_MOTION_NOTIFY: {
+
+            auto point_w = Geom::Point(event->motion.x, event->motion.y);
+            auto point_dt = _desktop->w2d(point_w);
+            bool snap = !(event->motion.state & GDK_SHIFT_MASK);
+
+            if (event->motion.state & GDK_BUTTON1_MASK) {
+                if (!mouse_is_pressed) {
+                    // this sometimes happens if the mouse was off the edge when the event started
+                    drag_origin_w = point_w;
+                    drag_origin_dt = point_dt;
+                    mouse_is_pressed = true;
+                }
+
+                if (dragging_item || dragging_viewbox) {
+                    // Continue to drag item.
+                    Geom::Affine tr = moveTo(point_dt, snap);
+                    // XXX Moving the existing shapes would be much better, but it has
+                    // a weird bug which stops it from working well.
+                    // drag_group->update(tr * drag_group->get_parent()->get_affine());
+                    addDragShapes(dragging_item, tr);
+                } else if (on_screen_rect) {
+                    // Continue to drag new box
+                    point_dt = getSnappedResizePoint(point_dt, event->motion.state, drag_origin_dt);
+                    on_screen_rect = Geom::Rect(drag_origin_dt, point_dt);
+                } else if (Geom::distance(drag_origin_w, point_w) < drag_tolerance) {
+                    // do not start dragging anything new if we're within tolerance from origin.
+                    // pass
+                } else if (auto page = pageUnder(drag_origin_dt)) {
+                    // Starting to drag page around the screen, the pageUnder must
+                    // be the drag_origin as small movements can kill the UX feel.
+                    dragging_item = page;
+                    page_manager.selectPage(page);
+                    addDragShapes(page, Geom::Affine());
+                    grabPage(page);
+                } else if (viewboxUnder(drag_origin_dt)) {
+                    // Special handling of viewbox dragging
+                    dragging_viewbox = true;
+                } else {
+                    // Start making a new page.
+                    dragging_item = nullptr;
+                    on_screen_rect = Geom::Rect(drag_origin_dt, drag_origin_dt);
+                    this->set_cursor("page-draw.svg");
+                }
+            } else {
+                mouse_is_pressed = false;
+                drag_origin_dt = point_dt;
+            }
+            break;
+        }
+        case GDK_BUTTON_RELEASE: {
+            if (event->button.button != 1) {
+                break;
+            }
+            auto point_w = Geom::Point(event->button.x, event->button.y);
+            auto point_dt = _desktop->w2d(point_w);
+            bool snap = !(event->button.state & GDK_SHIFT_MASK);
+            auto document = _desktop->getDocument();
+
+            if (dragging_viewbox || dragging_item) {
+                if (dragging_viewbox || dragging_item->isViewportPage()) {
+                    // Move the document's viewport first
+                    auto page_items = page_manager.getOverlappingItems(_desktop, dragging_item);
+                    auto rect = document->preferredBounds();
+                    auto affine = moveTo(point_dt, snap) * document->dt2doc();
+                    document->fitToRect(*rect * affine, false);
+                    // Now move the page back to where we expect it.
+                    if (dragging_item) {
+                        dragging_item->movePage(affine, false);
+                        dragging_item->setDesktopRect(*rect);
+                    }
+                    // We have a custom move object because item detection is fubar after fitToRect
+                    if (page_manager.move_objects()) {
+                        SPPage::moveItems(affine, page_items);
+                    }
+                } else {
+                    // Move the page object on the canvas.
+                    dragging_item->movePage(moveTo(point_dt, snap), page_manager.move_objects());
+                }
+                Inkscape::DocumentUndo::done(_desktop->getDocument(), "Move page position", INKSCAPE_ICON("tool-pages"));
+            } else if (on_screen_rect) {
+                // conclude box here (make new page)
+                page_manager.selectPage(page_manager.newDesktopPage(*on_screen_rect));
+                Inkscape::DocumentUndo::done(_desktop->getDocument(), "Create new drawn page", INKSCAPE_ICON("tool-pages"));
+            }
+            mouse_is_pressed = false;
+            drag_origin_dt = point_dt;
+            ret = true;
+
+            // Clear snap indication on mouse up.
+            _desktop->snapindicator->remove_snaptarget();
+            break;
+        }
+        case GDK_KEY_PRESS: {
+            if (event->key.keyval == GDK_KEY_Escape) {
+                mouse_is_pressed = false;
+                ret = true;
+            }
+            if (event->key.keyval == GDK_KEY_Delete) {
+                page_manager.deletePage(page_manager.move_objects());
+
+                Inkscape::DocumentUndo::done(_desktop->getDocument(), "Delete Page", INKSCAPE_ICON("tool-pages"));
+                ret = true;
+            }
+        }
+        default:
+            break;
+    }
+
+    // Clean up any finished dragging, doesn't matter how it ends
+    if (!mouse_is_pressed && (dragging_item || on_screen_rect || dragging_viewbox)) {
+        dragging_viewbox = false;
+        dragging_item = nullptr;
+        on_screen_rect = {};
+        clearDragShapes();
+        visual_box->hide();
+        ret = true;
+    } else if (on_screen_rect) {
+        visual_box->show();
+        visual_box->set_rect(*on_screen_rect);
+        ret = true;
+    }
+    if (!mouse_is_pressed) {
+        if (pageUnder(drag_origin_dt) || viewboxUnder(drag_origin_dt)) {
+            // This page under uses the current mouse position (unlike the above)
+            this->set_cursor("page-mouseover.svg");
+        } else {
+            this->set_cursor("page-draw.svg");
+        }
+    }
+
+
+    return ret ? true : ToolBase::root_handler(event);
+}
+
+void PagesTool::menu_popup(GdkEvent *event, SPObject *obj)
+{
+    auto &page_manager = _desktop->getDocument()->getPageManager();
+    SPPage *page = page_manager.getSelected();
+    if (event->type != GDK_KEY_PRESS) {
+        drag_origin_w = Geom::Point(event->button.x, event->button.y);
+        drag_origin_dt = _desktop->w2d(drag_origin_w);
+        page = pageUnder(drag_origin_dt);
+    }
+    if (page) {
+        ToolBase::menu_popup(event, page);
+    }
+}
+
+/**
+ * Creates the right snapping setup for dragging items around.
+ */
+void PagesTool::grabPage(SPPage *target)
+{
+    _bbox_points.clear();
+    getBBoxPoints(target->getDesktopRect(), &_bbox_points, false, SNAPSOURCE_PAGE_CORNER, SNAPTARGET_UNDEFINED,
+                  SNAPSOURCE_UNDEFINED, SNAPTARGET_UNDEFINED, SNAPSOURCE_PAGE_CENTER, SNAPTARGET_UNDEFINED);
+}
+
+/*
+ * Generate the movement affine as the page is dragged around (including snapping)
+ */
+Geom::Affine PagesTool::moveTo(Geom::Point xy, bool snap)
+{
+    Geom::Point dxy = xy - drag_origin_dt;
+
+    if (snap) {
+        SnapManager &snap_manager = _desktop->namedview->snap_manager;
+        snap_manager.setup(_desktop, true, dragging_item);
+        snap_manager.snapprefs.clearTargetMask(0); // Disable all snapping targets
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_ALIGNMENT_CATEGORY, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_ALIGNMENT_PAGE_CORNER, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_ALIGNMENT_PAGE_CENTER, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_PAGE_CORNER, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_PAGE_CENTER, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_GRID_INTERSECTION, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_GUIDE, -1);
+        snap_manager.snapprefs.setTargetMask(SNAPTARGET_GUIDE_INTERSECTION, -1);
+
+        Inkscape::PureTranslate *bb = new Inkscape::PureTranslate(dxy);
+        snap_manager.snapTransformed(_bbox_points, drag_origin_dt, (*bb));
+
+        if (bb->best_snapped_point.getSnapped()) {
+            dxy = bb->getTranslationSnapped();
+            _desktop->snapindicator->set_new_snaptarget(bb->best_snapped_point);
+        }
+
+        snap_manager.snapprefs.clearTargetMask(-1); // Reset preferences
+        snap_manager.unSetup();
+    }
+
+    return Geom::Translate(dxy);
+}
+
+/**
+ * Add all the shapes needed to see it being dragged.
+ */
+void PagesTool::addDragShapes(SPPage *page, Geom::Affine tr)
+{
+    clearDragShapes();
+    auto doc = _desktop->getDocument();
+
+    if (page) {
+        addDragShape(Geom::PathVector(Geom::Path(page->getDesktopRect())), tr);
+    } else {
+        auto doc_rect = doc->preferredBounds();
+        addDragShape(Geom::PathVector(Geom::Path(*doc_rect)), tr);
+    }
+    if (Inkscape::Preferences::get()->getBool("/tools/pages/move_objects", true)) {
+        for (auto &item : doc->getPageManager().getOverlappingItems(_desktop, page)) {
+            if (item && !item->isLocked()) {
+                addDragShape(item, tr);
+            }
+        }
+    }
+}
+
+/**
+ * Add an SPItem to the things being dragged.
+ */
+void PagesTool::addDragShape(SPItem *item, Geom::Affine tr)
+{
+    if (auto shape = item_to_outline(item)) {
+        addDragShape(*shape * item->i2dt_affine(), tr);
+    }
+}
+
+/**
+ * Add a shape to the set of dragging shapes, these are deleted when dragging stops.
+ */
+void PagesTool::addDragShape(Geom::PathVector &&pth, Geom::Affine tr)
+{
+    auto shape = new CanvasItemBpath(drag_group, pth * tr, false);
+    shape->set_stroke(0x00ff007f);
+    shape->set_fill(0x00000000, SP_WIND_RULE_EVENODD);
+    drag_shapes.push_back(shape);
+}
+
+/**
+ * Remove all drag shapes from the canvas.
+ */
+void PagesTool::clearDragShapes()
+{
+    for (auto &shape : drag_shapes) {
+        delete shape;
+    }
+    drag_shapes.clear();
+}
+
+/**
+ * Find a page under the cursor point.
+ */
+SPPage *PagesTool::pageUnder(Geom::Point pt, bool retain_selected)
+{
+    auto &pm = _desktop->getDocument()->getPageManager();
+
+    // If the point is still on the selected, favour that one.
+    if (auto selected = pm.getSelected()) {
+        if (retain_selected && selected->getSensitiveRect().contains(pt)) {
+            return selected;
+        }
+    }
+    // This provides a simple way of selecting a page based on their layering
+    // Pages which are entirely contained within another are selected before
+    // their larger parents.
+    SPPage* ret = nullptr;
+    for (auto &page : pm.getPages()) {
+        auto rect = page->getSensitiveRect();
+        // If the point is inside the page boundry
+        if (rect.contains(pt)) {
+            // If we don't have a page yet, or the new page is inside the old one.
+            if (!ret || ret->getSensitiveRect().contains(rect)) {
+                ret = page;
+            }
+        }
+    }
+    return ret;
+}
+
+/**
+ * Returns true if the document contains no pages AND the point
+ * is within the document viewbox.
+ */
+bool PagesTool::viewboxUnder(Geom::Point pt)
+{
+    if (auto document = _desktop->getDocument()) {
+        auto rect = document->preferredBounds();
+        rect->expandBy(-0.1); // see sp-page getSensitiveRect
+        return !document->getPageManager().hasPages() && rect.contains(pt);
+    }
+    return true;
+}
+
+void PagesTool::connectDocument(SPDocument *doc)
+{
+    _selector_changed_connection.disconnect();
+    if (doc) {
+        auto &page_manager = doc->getPageManager();
+        _selector_changed_connection =
+            page_manager.connectPageSelected([=](SPPage *page) {
+                selectionChanged(doc, page);
+            });
+        selectionChanged(doc, page_manager.getSelected());
+    } else {
+        selectionChanged(doc, nullptr);
+    }
+}
+
+
+
+void PagesTool::selectionChanged(SPDocument *doc, SPPage *page)
+{
+    if (_page_modified_connection) {
+        _page_modified_connection.disconnect();
+        for (auto knot : resize_knots) {
+            knot->hide();
+        }
+    }
+
+    // Loop existing pages because highlight_item is unsafe.
+    // Use desktop's document instead of doc, which may be nullptr.
+    for (auto &possible : _desktop->getDocument()->getPageManager().getPages()) {
+        if (highlight_item == possible) {
+            highlight_item->setSelected(false);
+        }
+    }
+    highlight_item = page;
+    if (doc) {
+        if (page) {
+            _page_modified_connection = page->connectModified(sigc::mem_fun(*this, &PagesTool::pageModified));
+            page->setSelected(true);
+            pageModified(page, 0);
+        } else {
+            // This is for viewBox editng directly. A special extra feature
+            _page_modified_connection = doc->connectModified([=](guint){
+            resizeKnotSet(*(doc->preferredBounds()));
+            });
+            resizeKnotSet(*(doc->preferredBounds()));
+        }
+    }
+}
+
+void PagesTool::pageModified(SPObject *object, guint /*flags*/)
+{
+    if (auto page = dynamic_cast<SPPage *>(object)) {
+        resizeKnotSet(page->getDesktopRect());
+    }
+}
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/pages-tool.h b/src/ui/tools/pages-tool.h
new file mode 100644
index 0000000..29c44d9
--- /dev/null
+++ b/src/ui/tools/pages-tool.h
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __UI_TOOLS_PAGES_CONTEXT_H__
+#define __UI_TOOLS_PAGES_CONTEXT_H__
+
+/*
+ * Page editing tool
+ *
+ * Authors:
+ *   Martin Owens <doctormo@geek-2.com>
+ *
+ * Copyright (C) 2021 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/tool-base.h"
+#include "2geom/rect.h"
+
+#define SP_PAGES_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::PagesTool *>((Inkscape::UI::Tools::ToolBase *)obj))
+#define SP_IS_PAGES_CONTEXT(obj) \
+    (dynamic_cast<const Inkscape::UI::Tools::PagesTool *>((const Inkscape::UI::Tools::ToolBase *)obj) != NULL)
+
+class SPDocument;
+class SPObject;
+class SPPage;
+class SPKnot;
+class SnapManager;
+
+namespace Inkscape {
+class SnapCandidatePoint;
+class CanvasItemGroup;
+class CanvasItemRect;
+class CanvasItemBpath;
+
+namespace UI {
+namespace Tools {
+
+class PagesTool : public ToolBase
+{
+public:
+    PagesTool(SPDesktop *desktop);
+    ~PagesTool() override;
+
+    bool root_handler(GdkEvent *event) override;
+    void menu_popup(GdkEvent *event, SPObject *obj = nullptr) override;
+private:
+    void selectionChanged(SPDocument *doc, SPPage *page);
+    void connectDocument(SPDocument *doc);
+    SPPage *pageUnder(Geom::Point pt, bool retain_selected = true);
+    bool viewboxUnder(Geom::Point pt);
+    void addDragShapes(SPPage *page, Geom::Affine tr);
+    void addDragShape(SPItem *item, Geom::Affine tr);
+    void addDragShape(Geom::PathVector &&pth, Geom::Affine tr);
+    void clearDragShapes();
+
+    Geom::Point getSnappedResizePoint(Geom::Point point, guint state, Geom::Point origin, SPObject *target = nullptr);
+    void resizeKnotSet(Geom::Rect rect);
+    void resizeKnotMoved(SPKnot *knot, Geom::Point const &ppointer, guint state);
+    void resizeKnotFinished(SPKnot *knot, guint state);
+    void pageModified(SPObject *object, guint flags);
+
+    void grabPage(SPPage *target);
+    Geom::Affine moveTo(Geom::Point xy, bool snap);
+
+    sigc::connection _selector_changed_connection;
+    sigc::connection _page_modified_connection;
+    sigc::connection _doc_replaced_connection;
+    sigc::connection _zoom_connection;
+
+    bool dragging_viewbox = false;
+    bool mouse_is_pressed = false;
+    Geom::Point drag_origin_w;
+    Geom::Point drag_origin_dt;
+    int drag_tolerance = 5;
+
+    std::vector<SPKnot *> resize_knots;
+    SPPage *highlight_item = nullptr;
+    SPPage *dragging_item = nullptr;
+    std::optional<Geom::Rect> on_screen_rect;
+    Inkscape::CanvasItemRect *visual_box = nullptr;
+    Inkscape::CanvasItemGroup *drag_group = nullptr;
+    std::vector<Inkscape::CanvasItemBpath *> drag_shapes;
+
+    std::vector<Inkscape::SnapCandidatePoint> _bbox_points;
+};
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+#endif
diff --git a/src/ui/tools/pen-tool.cpp b/src/ui/tools/pen-tool.cpp
new file mode 100644
index 0000000..d85a3b7
--- /dev/null
+++ b/src/ui/tools/pen-tool.cpp
@@ -0,0 +1,2027 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * Pen event context implementation.
+ */
+
+/*
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ * Copyright (C) 2004 Monash University
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include <2geom/curves.h>
+
+#include "context-fns.h"
+#include "desktop.h"
+#include "include/macros.h"
+#include "inkscape-application.h" // Undo check
+#include "message-context.h"
+#include "message-stack.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-ctrl.h"
+#include "display/control/canvas-item-curve.h"
+
+#include "object/sp-path.h"
+
+#include "ui/draw-anchor.h"
+#include "ui/shortcuts.h"
+#include "ui/tools/pen-tool.h"
+
+// we include the necessary files for BSpline & Spiro
+#include "live_effects/lpeobject.h"
+#include "live_effects/lpeobject-reference.h"
+#include "live_effects/parameter/path.h"
+
+#define INKSCAPE_LPE_SPIRO_C
+#include "live_effects/lpe-spiro.h"
+
+#include "helper/geom-nodetype.h"
+
+// For handling un-continuous paths:
+#include "inkscape.h"
+
+#include "live_effects/spiro.h"
+
+#define INKSCAPE_LPE_BSPLINE_C
+#include "live_effects/lpe-bspline.h"
+
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static Geom::Point pen_drag_origin_w(0, 0);
+static bool pen_within_tolerance = false;
+const double HANDLE_CUBIC_GAP = 0.001;
+
+PenTool::PenTool(SPDesktop *desktop, std::string prefs_path, const std::string &cursor_filename)
+    : FreehandBase(desktop, prefs_path, cursor_filename)
+{
+    tablet_enabled = false;
+
+    // Pen indicators (temporary handles shown when adding a new node).
+    c0 = new Inkscape::CanvasItemCtrl(desktop->getCanvasControls(), Inkscape::CANVAS_ITEM_CTRL_TYPE_ROTATE);
+    c1 = new Inkscape::CanvasItemCtrl(desktop->getCanvasControls(), Inkscape::CANVAS_ITEM_CTRL_TYPE_ROTATE);
+    c0->set_fill(0x0);
+    c1->set_fill(0x0);
+    c0->hide();
+    c1->hide();
+
+    cl0 = new Inkscape::CanvasItemCurve(desktop->getCanvasControls());
+    cl1 = new Inkscape::CanvasItemCurve(desktop->getCanvasControls());
+    cl0->hide();
+    cl1->hide();
+
+    sp_event_context_read(this, "mode");
+
+    this->anchor_statusbar = false;
+
+    this->setPolylineMode();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/freehand/pen/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    _desktop_destroy = _desktop->connectDestroy([=](SPDesktop *) { state = State::DEAD; });
+}
+
+PenTool::~PenTool() {
+    _desktop_destroy.disconnect();
+    this->discard_delayed_snap_event();
+
+    if (this->npoints != 0) {
+        // switching context - finish path
+        this->ea = nullptr; // unset end anchor if set (otherwise crashes)
+        if (state != State::DEAD) {
+            _finish(false);
+        }
+    }
+
+    if (this->c0) {
+        delete c0;
+    }
+    if (this->c1) {
+        delete c1;
+    }
+
+    if (this->cl0) {
+        delete cl0;
+    }
+    if (this->cl1) {
+        delete cl1;
+    }
+
+    if (this->waiting_item && this->expecting_clicks_for_LPE > 0) {
+        // we received too few clicks to sanely set the parameter path so we remove the LPE from the item
+        this->waiting_item->removeCurrentPathEffect(false);
+    }
+}
+
+void PenTool::setPolylineMode() {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    guint mode = prefs->getInt("/tools/freehand/pen/freehand-mode", 0);
+    // change the nodes to make space for bspline mode
+    this->polylines_only = (mode == 3 || mode == 4);
+    this->polylines_paraxial = (mode == 4);
+    this->spiro = (mode == 1);
+    this->bspline = (mode == 2);
+    this->_bsplineSpiroColor();
+    if (!this->green_bpaths.empty()) {
+        this->_redrawAll();
+    }
+}
+
+
+void PenTool::_cancel() {
+    this->num_clicks = 0;
+    this->state = PenTool::STOP;
+    this->_resetColors();
+    c0->hide();
+    c1->hide();
+    cl0->hide();
+    cl1->hide();
+    this->message_context->clear();
+    this->message_context->flash(Inkscape::NORMAL_MESSAGE, _("Drawing cancelled"));
+}
+
+/**
+ * Callback that sets key to value in pen context.
+ */
+void PenTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring name = val.getEntryName();
+
+    if (name == "mode") {
+        if ( val.getString() == "drag" ) {
+            this->mode = MODE_DRAG;
+        } else {
+            this->mode = MODE_CLICK;
+        }
+    }
+}
+
+bool PenTool::hasWaitingLPE() {
+    // note: waiting_LPE_type is defined in SPDrawContext
+    return (this->waiting_LPE != nullptr ||
+            this->waiting_LPE_type != Inkscape::LivePathEffect::INVALID_LPE);
+}
+
+/**
+ * Snaps new node relative to the previous node.
+ */
+void PenTool::_endpointSnap(Geom::Point &p, guint const state) {
+    // Paraxial kicks in after first line has set the angle (before then it's a free line)
+    bool poly = this->polylines_paraxial && !this->green_curve->is_unset();
+
+    if ((state & GDK_CONTROL_MASK) && !poly) { //CTRL enables angular snapping
+        if (this->npoints > 0) {
+            spdc_endpoint_snap_rotation(this, p, this->p[0], state);
+        } else {
+            std::optional<Geom::Point> origin = std::optional<Geom::Point>();
+            spdc_endpoint_snap_free(this, p, origin, state);
+        }
+    } else {
+        // We cannot use shift here to disable snapping because the shift-key is already used
+        // to toggle the paraxial direction; if the user wants to disable snapping (s)he will
+        // have to use the %-key, the menu, or the snap toolbar
+        if ((this->npoints > 0) && poly) {
+            // snap constrained
+            this->_setToNearestHorizVert(p, state);
+        } else {
+            // snap freely
+            std::optional<Geom::Point> origin = this->npoints > 0 ? this->p[0] : std::optional<Geom::Point>();
+            spdc_endpoint_snap_free(this, p, origin, state); // pass the origin, to allow for perpendicular / tangential snapping
+        }
+    }
+}
+
+/**
+ * Snaps new node's handle relative to the new node.
+ */
+void PenTool::_endpointSnapHandle(Geom::Point &p, guint const state) {
+    g_return_if_fail(( this->npoints == 2 ||
+            this->npoints == 5   ));
+
+    if ((state & GDK_CONTROL_MASK)) { //CTRL enables angular snapping
+        spdc_endpoint_snap_rotation(this, p, this->p[this->npoints - 2], state);
+    } else {
+        if (!(state & GDK_SHIFT_MASK)) { //SHIFT disables all snapping, except the angular snapping above
+            std::optional<Geom::Point> origin = this->p[this->npoints - 2];
+            spdc_endpoint_snap_free(this, p, origin, state);
+        }
+    }
+}
+
+bool PenTool::item_handler(SPItem* item, GdkEvent* event) {
+    bool ret = false;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            ret = this->_handleButtonPress(event->button);
+            break;
+        case GDK_BUTTON_RELEASE:
+            ret = this->_handleButtonRelease(event->button);
+            break;
+        default:
+            break;
+    }
+
+    if (!ret) {
+        ret = FreehandBase::item_handler(item, event);
+    }
+
+    return ret;
+}
+
+/**
+ * Callback to handle all pen events.
+ */
+bool PenTool::root_handler(GdkEvent* event) {
+    bool ret = false;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            ret = this->_handleButtonPress(event->button);
+            break;
+
+        case GDK_MOTION_NOTIFY:
+            ret = this->_handleMotionNotify(event->motion);
+            break;
+
+        case GDK_BUTTON_RELEASE:
+            ret = this->_handleButtonRelease(event->button);
+            break;
+
+        case GDK_2BUTTON_PRESS:
+            ret = this->_handle2ButtonPress(event->button);
+            break;
+
+        case GDK_KEY_PRESS:
+            ret = this->_handleKeyPress(event);
+            break;
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+        ret = FreehandBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+/**
+ * Handle mouse button press event.
+ */
+bool PenTool::_handleButtonPress(GdkEventButton const &bevent) {
+    if (this->events_disabled) {
+        // skip event processing if events are disabled
+        return false;
+    }
+
+    Geom::Point const event_w(bevent.x, bevent.y);
+    Geom::Point event_dt(_desktop->w2d(event_w));
+    //Test whether we hit any anchor.
+    SPDrawAnchor * const anchor = spdc_test_inside(this, event_w);
+
+    //with this we avoid creating a new point over the existing one
+    if(bevent.button != 3 && (this->spiro || this->bspline) && this->npoints > 0 && this->p[0] == this->p[3]){
+        if( anchor && anchor == this->sa && this->green_curve->is_unset()){
+            //remove the following line to avoid having one node on top of another
+            _finishSegment(event_dt, bevent.state);
+            _finish(true);
+            return true;
+        }
+        return false;
+    }
+
+    bool ret = false;
+    if (bevent.button == 1
+        // make sure this is not the last click for a waiting LPE (otherwise we want to finish the path)
+        && this->expecting_clicks_for_LPE != 1) {
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return true;
+        }
+
+        grabCanvasEvents();
+
+        pen_drag_origin_w = event_w;
+        pen_within_tolerance = true;
+
+        switch (this->mode) {
+
+            case PenTool::MODE_CLICK:
+                // In click mode we add point on release
+                switch (this->state) {
+                    case PenTool::POINT:
+                    case PenTool::CONTROL:
+                    case PenTool::CLOSE:
+                        break;
+                    case PenTool::STOP:
+                        // This is allowed, if we just canceled curve
+                        this->state = PenTool::POINT;
+                        break;
+                    default:
+                        break;
+                }
+                break;
+            case PenTool::MODE_DRAG:
+                switch (this->state) {
+                    case PenTool::STOP:
+                        // This is allowed, if we just canceled curve
+                    case PenTool::POINT:
+                        if (this->npoints == 0) {
+                            this->_bsplineSpiroColor();
+                            Geom::Point p;
+                            if ((bevent.state & GDK_CONTROL_MASK) && (this->polylines_only || this->polylines_paraxial)) {
+                                p = event_dt;
+                                if (!(bevent.state & GDK_SHIFT_MASK)) {
+                                    SnapManager &m = _desktop->namedview->snap_manager;
+                                    m.setup(_desktop);
+                                    m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                                    m.unSetup();
+                                }
+                              spdc_create_single_dot(this, p, "/tools/freehand/pen", bevent.state);
+                              ret = true;
+                              break;
+                            }
+
+                            // TODO: Perhaps it would be nicer to rearrange the following case
+                            // distinction so that the case of a waiting LPE is treated separately
+
+                            // Set start anchor
+
+                            this->sa = anchor;
+                            if (anchor) {
+                                //Put the start overwrite curve always on the same direction
+                                if (anchor->start) {
+                                    this->sa_overwrited = this->sa->curve->create_reverse();
+                                } else {
+                                    this->sa_overwrited = this->sa->curve->copy();
+                                }
+                                this->_bsplineSpiroStartAnchor(bevent.state & GDK_SHIFT_MASK);
+                            }
+                            if (anchor && (!this->hasWaitingLPE()|| this->bspline || this->spiro)) {
+                                // Adjust point to anchor if needed; if we have a waiting LPE, we need
+                                // a fresh path to be created so don't continue an existing one
+                                p = anchor->dp;
+                                _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Continuing selected path"));
+                            } else {
+                                // This is the first click of a new curve; deselect item so that
+                                // this curve is not combined with it (unless it is drawn from its
+                                // anchor, which is handled by the sibling branch above)
+                                Inkscape::Selection * const selection = _desktop->getSelection();
+                                if (!(bevent.state & GDK_SHIFT_MASK) || this->hasWaitingLPE()) {
+                                    // if we have a waiting LPE, we need a fresh path to be created
+                                    // so don't append to an existing one
+                                    selection->clear();
+                                    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
+                                } else if (selection->singleItem() && SP_IS_PATH(selection->singleItem())) {
+                                    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Appending to selected path"));
+                                }
+
+                                // Create green anchor
+                                p = event_dt;
+                                this->_endpointSnap(p, bevent.state);
+                                this->green_anchor.reset(new SPDrawAnchor(this, this->green_curve.get(), true, p));
+                            }
+                            this->_setInitialPoint(p);
+                        } else {
+                            // Set end anchor
+                            this->ea = anchor;
+                            Geom::Point p;
+                            if (anchor) {
+                                p = anchor->dp;
+                                // we hit an anchor, will finish the curve (either with or without closing)
+                                // in release handler
+                                this->state = PenTool::CLOSE;
+
+                                if (this->green_anchor && this->green_anchor->active) {
+                                    // we clicked on the current curve start, so close it even if
+                                    // we drag a handle away from it
+                                    this->green_closed = true;
+                                }
+                                ret = true;
+                                break;
+
+                            } else {
+                                p = event_dt;
+                                this->_endpointSnap(p, bevent.state); // Snap node only if not hitting anchor.
+                                this->_setSubsequentPoint(p, true);
+                            }
+                        }
+                        // avoid the creation of a control point so a node is created in the release event
+                        this->state = (this->spiro || this->bspline || this->polylines_only) ? PenTool::POINT : PenTool::CONTROL;
+                        ret = true;
+                        break;
+                    case PenTool::CONTROL:
+                        g_warning("Button down in CONTROL state");
+                        break;
+                    case PenTool::CLOSE:
+                        g_warning("Button down in CLOSE state");
+                        break;
+                    default:
+                        break;
+                }
+                break;
+            default:
+                break;
+        }
+    } else if (this->expecting_clicks_for_LPE == 1 && this->npoints != 0) {
+        // when the last click for a waiting LPE occurs we want to finish the path
+        this->_finishSegment(event_dt, bevent.state);
+        if (this->green_closed) {
+            // finishing at the start anchor, close curve
+            this->_finish(true);
+        } else {
+            // finishing at some other anchor, finish curve but not close
+            this->_finish(false);
+        }
+
+        ret = true;
+    } else if (bevent.button == 3 && this->npoints != 0 && !_button1on) {
+        // right click - finish path, but only if the left click isn't pressed.
+        this->ea = nullptr; // unset end anchor if set (otherwise crashes)
+        this->_finish(false);
+        ret = true;
+    }
+
+    if (this->expecting_clicks_for_LPE > 0) {
+        --this->expecting_clicks_for_LPE;
+    }
+
+    return ret;
+}
+
+/**
+ * Handle motion_notify event.
+ */
+bool PenTool::_handleMotionNotify(GdkEventMotion const &mevent) {
+    bool ret = false;
+
+    if (mevent.state & GDK_BUTTON2_MASK) {
+        // allow scrolling
+        return false;
+    }
+
+    if (this->events_disabled) {
+        // skip motion events if pen events are disabled
+        return false;
+    }
+
+    Geom::Point const event_w(mevent.x, mevent.y);
+
+    //we take out the function the const "tolerance" because we need it later
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    gint const tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    if (pen_within_tolerance) {
+        if ( Geom::LInfty( event_w - pen_drag_origin_w ) < tolerance ) {
+            return false;   // Do not drag if we're within tolerance from origin.
+        }
+    }
+    // Once the user has moved farther than tolerance from the original location
+    // (indicating they intend to move the object, not click), then always process the
+    // motion notify coordinates as given (no snapping back to origin)
+    pen_within_tolerance = false;
+
+    // Find desktop coordinates
+    Geom::Point p = _desktop->w2d(event_w);
+
+    // Test, whether we hit any anchor
+    SPDrawAnchor *anchor = spdc_test_inside(this, event_w);
+
+    switch (this->mode) {
+        case PenTool::MODE_CLICK:
+            switch (this->state) {
+                case PenTool::POINT:
+                    if ( this->npoints != 0 ) {
+                        // Only set point, if we are already appending
+                        this->_endpointSnap(p, mevent.state);
+                        this->_setSubsequentPoint(p, true);
+                        ret = true;
+                    } else if (!this->sp_event_context_knot_mouseover()) {
+                        SnapManager &m = _desktop->namedview->snap_manager;
+                        m.setup(_desktop);
+                        m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                        m.unSetup();
+                    }
+                    break;
+                case PenTool::CONTROL:
+                case PenTool::CLOSE:
+                    // Placing controls is last operation in CLOSE state
+                    this->_endpointSnap(p, mevent.state);
+                    this->_setCtrl(p, mevent.state);
+                    ret = true;
+                    break;
+                case PenTool::STOP:
+                    if (!this->sp_event_context_knot_mouseover()) {
+                        SnapManager &m = _desktop->namedview->snap_manager;
+                        m.setup(_desktop);
+                        m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                        m.unSetup();
+                    }
+                    break;
+                default:
+                    break;
+            }
+            break;
+        case PenTool::MODE_DRAG:
+            switch (this->state) {
+                case PenTool::POINT:
+                    if ( this->npoints > 0 ) {
+                        // Only set point, if we are already appending
+
+                        if (!anchor) {   // Snap node only if not hitting anchor
+                            this->_endpointSnap(p, mevent.state);
+                            this->_setSubsequentPoint(p, true, mevent.state);
+                        } else {
+                            this->_setSubsequentPoint(anchor->dp, false, mevent.state);
+                        }
+
+                        if (anchor && !this->anchor_statusbar) {
+                            if(!this->spiro && !this->bspline){
+                                this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> or <b>click and drag</b> to close and finish the path."));
+                            }else{
+                                this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> or <b>click and drag</b> to close and finish the path. Shift+Click make a cusp node"));
+                            }
+                            this->anchor_statusbar = true;
+                        } else if (!anchor && this->anchor_statusbar) {
+                            this->message_context->clear();
+                            this->anchor_statusbar = false;
+                        }
+
+                        ret = true;
+                    } else {
+                        if (anchor && !this->anchor_statusbar) {
+                            if(!this->spiro && !this->bspline){
+                                this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> or <b>click and drag</b> to continue the path from this point."));
+                            }else{
+                                this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> or <b>click and drag</b> to continue the path from this point. Shift+Click make a cusp node"));
+                            }
+                            this->anchor_statusbar = true;
+                        } else if (!anchor && this->anchor_statusbar) {
+                            this->message_context->clear();
+                            this->anchor_statusbar = false;
+
+                        }
+                        if (!this->sp_event_context_knot_mouseover()) {
+                            SnapManager &m = _desktop->namedview->snap_manager;
+                            m.setup(_desktop);
+                            m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                            m.unSetup();
+                        }
+                    }
+                    break;
+                case PenTool::CONTROL:
+                case PenTool::CLOSE:
+                    // Placing controls is last operation in CLOSE state
+
+                    // snap the handle
+
+                    this->_endpointSnapHandle(p, mevent.state);
+
+                    if (!this->polylines_only) {
+                        this->_setCtrl(p, mevent.state);
+                    } else {
+                        this->_setCtrl(this->p[1], mevent.state);
+                    }
+
+                    gobble_motion_events(GDK_BUTTON1_MASK);
+                    ret = true;
+                    break;
+                case PenTool::STOP:
+                    // Don't break; fall through to default to do preSnapping
+                default:
+                    if (!this->sp_event_context_knot_mouseover()) {
+                        SnapManager &m = _desktop->namedview->snap_manager;
+                        m.setup(_desktop);
+                        m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                        m.unSetup();
+                    }
+                    break;
+            }
+            break;
+        default:
+            break;
+    }
+    // calls the function "bspline_spiro_motion" when the mouse starts or stops moving
+    if(this->bspline){
+        this->_bsplineSpiroMotion(mevent.state);
+    }else{
+        if ( Geom::LInfty( event_w - pen_drag_origin_w ) > (tolerance/2) || mevent.time == 0) {
+            this->_bsplineSpiroMotion(mevent.state);
+            pen_drag_origin_w = event_w;
+        }
+    }
+
+    return ret;
+}
+
+/**
+ * Handle mouse button release event.
+ */
+bool PenTool::_handleButtonRelease(GdkEventButton const &revent) {
+    if (this->events_disabled) {
+        // skip event processing if events are disabled
+        return false;
+    }
+
+    bool ret = false;
+
+    if (revent.button == 1) {
+        Geom::Point const event_w(revent.x, revent.y);
+
+        // Find desktop coordinates
+        Geom::Point p = _desktop->w2d(event_w);
+
+        // Test whether we hit any anchor.
+
+        SPDrawAnchor *anchor = spdc_test_inside(this, event_w);
+        // if we try to create a node in the same place as another node, we skip
+        if((!anchor || anchor == this->sa) && (this->spiro || this->bspline) && this->npoints > 0 && this->p[0] == this->p[3]){
+            return true;
+        }
+
+        switch (this->mode) {
+            case PenTool::MODE_CLICK:
+                switch (this->state) {
+                    case PenTool::POINT:
+                        this->ea = anchor;
+                        if (anchor) {
+                            p = anchor->dp;
+                        }
+                        this->state = PenTool::CONTROL;
+                        break;
+                    case PenTool::CONTROL:
+                        // End current segment
+                        this->_endpointSnap(p, revent.state);
+                        this->_finishSegment(p, revent.state);
+                        this->state = PenTool::POINT;
+                        break;
+                    case PenTool::CLOSE:
+                        // End current segment
+                        if (!anchor) {   // Snap node only if not hitting anchor
+                            this->_endpointSnap(p, revent.state);
+                        }
+                        this->_finishSegment(p, revent.state);
+                        // hude the guide of the penultimate node when closing the curve
+                        if(this->spiro){
+                            c1->hide();
+                        }
+                        this->_finish(true);
+                        this->state = PenTool::POINT;
+                        break;
+                    case PenTool::STOP:
+                        // This is allowed, if we just canceled curve
+                        this->state = PenTool::POINT;
+                        break;
+                    default:
+                        break;
+                }
+                break;
+            case PenTool::MODE_DRAG:
+                switch (this->state) {
+                    case PenTool::POINT:
+                    case PenTool::CONTROL:
+                        this->_endpointSnap(p, revent.state);
+                        this->_finishSegment(p, revent.state);
+                        break;
+                    case PenTool::CLOSE:
+                        this->_endpointSnap(p, revent.state);
+                        this->_finishSegment(p, revent.state);
+                        // hide the penultimate node guide when closing the curve
+                        if(this->spiro){
+                            c1->hide();
+                        }
+                        if (this->green_closed) {
+                            // finishing at the start anchor, close curve
+                            this->_finish(true);
+                        } else {
+                            // finishing at some other anchor, finish curve but not close
+                            this->_finish(false);
+                        }
+                        break;
+                    case PenTool::STOP:
+                        // This is allowed, if we just cancelled curve
+                        break;
+                    default:
+                        break;
+                }
+                this->state = PenTool::POINT;
+                break;
+            default:
+                break;
+        }
+
+        ungrabCanvasEvents();
+
+        ret = true;
+
+        this->green_closed = false;
+    }
+
+    // TODO: can we be sure that the path was created correctly?
+    // TODO: should we offer an option to collect the clicks in a list?
+    if (this->expecting_clicks_for_LPE == 0 && this->hasWaitingLPE()) {
+        this->setPolylineMode();
+
+        Inkscape::Selection *selection = _desktop->getSelection();
+
+        if (this->waiting_LPE) {
+            // we have an already created LPE waiting for a path
+            this->waiting_LPE->acceptParamPath(SP_PATH(selection->singleItem()));
+            selection->add(this->waiting_item);
+            this->waiting_LPE = nullptr;
+        } else {
+            // the case that we need to create a new LPE and apply it to the just-drawn path is
+            // handled in spdc_check_for_and_apply_waiting_LPE() in draw-context.cpp
+        }
+    }
+
+    return ret;
+}
+
+bool PenTool::_handle2ButtonPress(GdkEventButton const &bevent) {
+    bool ret = false;
+    // only end on LMB double click. Otherwise horizontal scrolling causes ending of the path
+    if (this->npoints != 0 && bevent.button == 1 && this->state != PenTool::CLOSE) {
+        this->_finish(false);
+        ret = true;
+    }
+    return ret;
+}
+
+void PenTool::_redrawAll() {
+    // green
+    if (! this->green_bpaths.empty()) {
+        // remove old piecewise green canvasitems
+        for (auto path : this->green_bpaths) {
+            delete path;
+        }
+        this->green_bpaths.clear();
+
+        // one canvas bpath for all of green_curve
+        auto canvas_shape = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), green_curve.get(), true);
+        canvas_shape->set_stroke(green_color);
+        canvas_shape->set_fill(0x0, SP_WIND_RULE_NONZERO);
+        this->green_bpaths.push_back(canvas_shape);
+    }
+    if (this->green_anchor) {
+        this->green_anchor->ctrl->set_position(this->green_anchor->dp);
+    }
+
+    this->red_curve->reset();
+    this->red_curve->moveto(this->p[0]);
+    this->red_curve->curveto(this->p[1], this->p[2], this->p[3]);
+    red_bpath->set_bpath(red_curve.get(), true);
+
+    // handles
+    // hide the handlers in bspline and spiro modes
+    if (this->p[0] != this->p[1] && !this->spiro && !this->bspline) {
+        c1->set_position(p[1]);
+        c1->show();
+        cl1->set_coords(p[0], p[1]);
+        cl1->show();
+    } else {
+        c1->hide();
+        cl1->hide();
+    }
+
+    Geom::Curve const * last_seg = this->green_curve->last_segment();
+    if (last_seg) {
+        Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const *>( last_seg );
+        // hide the handlers in bspline and spiro modes
+        if ( cubic &&
+             (*cubic)[2] != this->p[0] && !this->spiro && !this->bspline )
+        {
+            Geom::Point p2 = (*cubic)[2];
+            c0->set_position(p2);
+            c0->show();
+            cl0->set_coords(p2, p[0]);
+            cl0->show();
+        } else {
+            c0->hide();
+            cl0->hide();
+        }
+    }
+
+    // simply redraw the spiro. because its a redrawing, we don't call the global function,
+    // but we call the redrawing at the ending.
+     this->_bsplineSpiroBuild();
+}
+
+void PenTool::_lastpointMove(gdouble x, gdouble y) {
+    if (this->npoints != 5)
+        return;
+
+    y *= -_desktop->yaxisdir();
+
+    // green
+    if (!this->green_curve->is_unset()) {
+        this->green_curve->last_point_additive_move( Geom::Point(x,y) );
+    } else {
+        // start anchor too
+        if (this->green_anchor) {
+            this->green_anchor->dp += Geom::Point(x, y);
+        }
+    }
+
+    // red
+
+    this->p[0] += Geom::Point(x, y);
+    this->p[1] += Geom::Point(x, y);
+    this->_redrawAll();
+}
+
+void PenTool::_lastpointMoveScreen(gdouble x, gdouble y) {
+    this->_lastpointMove(x / _desktop->current_zoom(), y / _desktop->current_zoom());
+}
+
+void PenTool::_lastpointToCurve() {
+    // avoid that if the "red_curve" contains only two points ( rect ), it doesn't stop here.
+    if (this->npoints != 5 && !this->spiro && !this->bspline)
+        return;
+
+    this->p[1] = this->red_curve->last_segment()->initialPoint() + (1./3.)*(*this->red_curve->last_point() - this->red_curve->last_segment()->initialPoint());
+    //modificate the last segment of the green curve so it creates the type of node we need
+    if (this->spiro||this->bspline) {
+        if (!this->green_curve->is_unset()) {
+            Geom::Point A(0,0);
+            Geom::Point B(0,0);
+            Geom::Point C(0,0);
+            Geom::Point D(0,0);
+            Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const *>( this->green_curve->last_segment() );
+            //We obtain the last segment 4 points in the previous curve
+            if ( cubic ){
+                A = (*cubic)[0];
+                B = (*cubic)[1];
+                if (this->spiro) {
+                    C = this->p[0] + (this->p[0] - this->p[1]);
+                } else {
+                    C = *this->green_curve->last_point() + (1./3.)*(this->green_curve->last_segment()->initialPoint() - *this->green_curve->last_point());
+                }
+                D = (*cubic)[3];
+            } else {
+                A = this->green_curve->last_segment()->initialPoint();
+                B = this->green_curve->last_segment()->initialPoint();
+                if (this->spiro) {
+                    C = this->p[0] + (this->p[0] - this->p[1]);
+                } else {
+                    C = *this->green_curve->last_point() + (1./3.)*(this->green_curve->last_segment()->initialPoint() - *this->green_curve->last_point());
+                }
+                D = *this->green_curve->last_point();
+            }
+            auto previous = std::make_unique<SPCurve>();
+            previous->moveto(A);
+            previous->curveto(B, C, D);
+            if ( this->green_curve->get_segment_count() == 1) {
+                this->green_curve = std::move(previous);
+            } else {
+                //we eliminate the last segment
+                this->green_curve->backspace();
+                //and we add it again with the recreation
+                green_curve->append_continuous(*previous);
+            }
+        }
+        //if the last node is an union with another curve
+        if (this->green_curve->is_unset() && this->sa && !this->sa->curve->is_unset()) {
+            this->_bsplineSpiroStartAnchor(false);
+        }
+    }
+
+    this->_redrawAll();
+}
+
+
+void PenTool::_lastpointToLine() {
+    // avoid that if the "red_curve" contains only two points ( rect) it doesn't stop here.
+    if (this->npoints != 5 && !this->bspline)
+        return;
+
+    // modify the last segment of the green curve so the type of node we want is created.
+    if(this->spiro || this->bspline){
+        if(!this->green_curve->is_unset()){
+            Geom::Point A(0,0);
+            Geom::Point B(0,0);
+            Geom::Point C(0,0);
+            Geom::Point D(0,0);
+            auto previous = std::make_unique<SPCurve>();
+            Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const *>( this->green_curve->last_segment() );
+            if ( cubic ) {
+                A = this->green_curve->last_segment()->initialPoint();
+                B = (*cubic)[1];
+                C = *this->green_curve->last_point();
+                D = C;
+            } else {
+                //We obtain the last segment 4 points in the previous curve
+                A = this->green_curve->last_segment()->initialPoint();
+                B = A;
+                C = *this->green_curve->last_point();
+                D = C;
+            }
+            previous->moveto(A);
+            previous->curveto(B, C, D);
+            if( this->green_curve->get_segment_count() == 1){
+                this->green_curve = std::move(previous);
+            }else{
+                //we eliminate the last segment
+                this->green_curve->backspace();
+                //and we add it again with the recreation
+                green_curve->append_continuous(*previous);
+            }
+        }
+        // if the last node is an union with another curve
+        if(this->green_curve->is_unset() && this->sa && !this->sa->curve->is_unset()){
+            this->_bsplineSpiroStartAnchor(true);
+        }
+    }
+
+    this->p[1] = this->p[0];
+    this->_redrawAll();
+}
+
+
+bool PenTool::_handleKeyPress(GdkEvent *event) {
+    bool ret = false;
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px"); // in px
+
+    // Check for undo if we have started drawing a path. User might have change shortcut.
+    if (this->npoints > 0) {
+        Gtk::AccelKey shortcut = Inkscape::Shortcuts::get_from_event((GdkEventKey*)event);
+        auto app = InkscapeApplication::instance();
+        auto gapp = app->gtk_app();
+        auto actions = gapp->get_actions_for_accel(shortcut.get_abbrev());
+        if (std::find(actions.begin(), actions.end(), "win.undo") != actions.end()) {
+            return _undoLastPoint();
+        }
+    }
+
+    switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Left: // move last point left
+        case GDK_KEY_KP_Left:
+            if (!MOD__CTRL(event)) { // not ctrl
+                if (MOD__ALT(event)) { // alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMoveScreen(-10, 0); // shift
+                    }
+                    else {
+                        this->_lastpointMoveScreen(-1, 0); // no shift
+                    }
+                }
+                else { // no alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMove(-10*nudge, 0); // shift
+                    }
+                    else {
+                        this->_lastpointMove(-nudge, 0); // no shift
+                    }
+                }
+                ret = true;
+            }
+            break;
+        case GDK_KEY_Up: // move last point up
+        case GDK_KEY_KP_Up:
+            if (!MOD__CTRL(event)) { // not ctrl
+                if (MOD__ALT(event)) { // alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMoveScreen(0, 10); // shift
+                    }
+                    else {
+                        this->_lastpointMoveScreen(0, 1); // no shift
+                    }
+                }
+                else { // no alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMove(0, 10*nudge); // shift
+                    }
+                    else {
+                        this->_lastpointMove(0, nudge); // no shift
+                    }
+                }
+                ret = true;
+            }
+            break;
+        case GDK_KEY_Right: // move last point right
+        case GDK_KEY_KP_Right:
+            if (!MOD__CTRL(event)) { // not ctrl
+                if (MOD__ALT(event)) { // alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMoveScreen(10, 0); // shift
+                    }
+                    else {
+                        this->_lastpointMoveScreen(1, 0); // no shift
+                    }
+                }
+                else { // no alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMove(10*nudge, 0); // shift
+                    }
+                    else {
+                        this->_lastpointMove(nudge, 0); // no shift
+                    }
+                }
+                ret = true;
+            }
+            break;
+        case GDK_KEY_Down: // move last point down
+        case GDK_KEY_KP_Down:
+            if (!MOD__CTRL(event)) { // not ctrl
+                if (MOD__ALT(event)) { // alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMoveScreen(0, -10); // shift
+                    }
+                    else {
+                        this->_lastpointMoveScreen(0, -1); // no shift
+                    }
+                }
+                else { // no alt
+                    if (MOD__SHIFT(event)) {
+                        this->_lastpointMove(0, -10*nudge); // shift
+                    }
+                    else {
+                        this->_lastpointMove(0, -nudge); // no shift
+                    }
+                }
+                ret = true;
+            }
+            break;
+
+/*TODO: this is not yet enabled?? looks like some traces of the Geometry tool
+        case GDK_KEY_P:
+        case GDK_KEY_p:
+            if (MOD__SHIFT_ONLY(event)) {
+                sp_pen_context_wait_for_LPE_mouse_clicks(pc, Inkscape::LivePathEffect::PARALLEL, 2);
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_C:
+        case GDK_KEY_c:
+            if (MOD__SHIFT_ONLY(event)) {
+                sp_pen_context_wait_for_LPE_mouse_clicks(pc, Inkscape::LivePathEffect::CIRCLE_3PTS, 3);
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_B:
+        case GDK_KEY_b:
+            if (MOD__SHIFT_ONLY(event)) {
+                sp_pen_context_wait_for_LPE_mouse_clicks(pc, Inkscape::LivePathEffect::PERP_BISECTOR, 2);
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_A:
+        case GDK_KEY_a:
+            if (MOD__SHIFT_ONLY(event)) {
+                sp_pen_context_wait_for_LPE_mouse_clicks(pc, Inkscape::LivePathEffect::ANGLE_BISECTOR, 3);
+                ret = true;
+            }
+            break;
+*/
+
+        case GDK_KEY_U:
+        case GDK_KEY_u:
+            if (MOD__SHIFT_ONLY(event)) {
+                this->_lastpointToCurve();
+                ret = true;
+            }
+            break;
+        case GDK_KEY_L:
+        case GDK_KEY_l:
+            if (MOD__SHIFT_ONLY(event)) {
+                this->_lastpointToLine();
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_Return:
+        case GDK_KEY_KP_Enter:
+            if (this->npoints != 0) {
+                this->ea = nullptr; // unset end anchor if set (otherwise crashes)
+                if(MOD__SHIFT_ONLY(event)) {
+                    // All this is needed to stop the last control
+                    // point dispeating and stop making an n-1 shape.
+                    Geom::Point const p(0, 0);
+                    if(this->red_curve->is_unset()) {
+                        this->red_curve->moveto(p);
+                    }
+                    this->_finishSegment(p, 0);
+                    this->_finish(true);
+                } else {
+                  this->_finish(false);
+                }
+                ret = true;
+            }
+            break;
+        case GDK_KEY_Escape:
+            if (this->npoints != 0) {
+                // if drawing, cancel, otherwise pass it up for deselecting
+                this->_cancel ();
+                ret = true;
+            }
+            break;
+        case GDK_KEY_g:
+        case GDK_KEY_G:
+            if (MOD__SHIFT_ONLY(event)) {
+                _desktop->selection->toGuides();
+                ret = true;
+            }
+            break;
+        case GDK_KEY_BackSpace:
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+            ret = _undoLastPoint();
+            break;
+        case GDK_KEY_Z:
+        case GDK_KEY_z:
+            if (event->key.state & INK_GDK_PRIMARY_MASK) {
+                ret = _undoLastPoint();
+            }
+            break;
+        default:
+            break;
+    }
+    return ret;
+}
+
+void PenTool::_resetColors() {
+    // Red
+    this->red_curve->reset();
+    this->red_bpath->set_bpath(nullptr);
+
+    // Blue
+    this->blue_curve->reset();
+    this->blue_bpath->set_bpath(nullptr);
+
+    // Green
+    for (auto path : this->green_bpaths) {
+        delete path;
+    }
+    this->green_bpaths.clear();
+    this->green_curve->reset();
+    this->green_anchor.reset();
+
+    this->sa = nullptr;
+    this->ea = nullptr;
+
+    if (this->sa_overwrited) {
+        this->sa_overwrited->reset();
+    }
+
+    this->npoints = 0;
+    this->red_curve_is_valid = false;
+}
+
+
+void PenTool::_setInitialPoint(Geom::Point const p) {
+    g_assert( this->npoints == 0 );
+
+    this->p[0] = p;
+    this->p[1] = p;
+    this->npoints = 2;
+    this->red_bpath->set_bpath(nullptr);
+}
+
+/**
+ * Show the status message for the current line/curve segment.
+ * This type of message always shows angle/distance as the last
+ * two parameters ("angle %3.2f&#176;, distance %s").
+ */
+void PenTool::_setAngleDistanceStatusMessage(Geom::Point const p, int pc_point_to_compare, gchar const *message) {
+    g_assert((pc_point_to_compare == 0) || (pc_point_to_compare == 3)); // exclude control handles
+    g_assert(message != nullptr);
+
+    Geom::Point rel = p - this->p[pc_point_to_compare];
+    Inkscape::Util::Quantity q = Inkscape::Util::Quantity(Geom::L2(rel), "px");
+    Glib::ustring dist = q.string(_desktop->namedview->display_units);
+    double angle = atan2(rel[Geom::Y], rel[Geom::X]) * 180 / M_PI;
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/options/compassangledisplay/value", false) != 0) {
+        angle = 90 - angle;
+
+        if (_desktop->is_yaxisdown()) {
+            angle = 180 - angle;
+        }
+
+        if (angle < 0) {
+            angle += 360;
+        }
+    }
+
+    this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE, message, angle, dist.c_str());
+}
+
+// this function changes the colors red, green and blue making them transparent or not, depending on if spiro is being used.
+void PenTool::_bsplineSpiroColor()
+{
+    static Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (this->spiro){
+        this->red_color = 0xff000000;
+        this->green_color = 0x00ff0000;
+    } else if(this->bspline) {
+        this->highlight_color = currentLayer()->highlight_color();
+        if((unsigned int)prefs->getInt("/tools/nodes/highlight_color", 0xff0000ff) == this->highlight_color){
+            this->green_color = 0xff00007f;
+            this->red_color = 0xff00007f;
+        } else {
+            this->green_color = this->highlight_color;
+            this->red_color = this->highlight_color;
+        }
+    } else {
+        this->highlight_color = currentLayer()->highlight_color();
+        this->red_color = 0xff00007f;
+        if((unsigned int)prefs->getInt("/tools/nodes/highlight_color", 0xff0000ff) == this->highlight_color){
+            this->green_color = 0x00ff007f;
+        } else {
+            this->green_color = this->highlight_color;
+        }
+        blue_bpath->hide();
+    }
+
+    //We erase all the "green_bpaths" to recreate them after with the colour
+    //transparency recently modified
+    if (!this->green_bpaths.empty()) {
+        // remove old piecewise green canvasitems
+        for (auto path : this->green_bpaths) {
+            delete path;
+        }
+        this->green_bpaths.clear();
+
+        // one canvas bpath for all of green_curve
+        auto canvas_shape = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), green_curve.get(), true);
+        canvas_shape->set_stroke(green_color);
+        canvas_shape->set_fill(0x0, SP_WIND_RULE_NONZERO);
+        this->green_bpaths.push_back(canvas_shape);
+    }
+
+    this->red_bpath->set_stroke(red_color);
+}
+
+
+void PenTool::_bsplineSpiro(bool shift)
+{
+    if(!this->spiro && !this->bspline){
+        return;
+    }
+
+    shift?this->_bsplineSpiroOff():this->_bsplineSpiroOn();
+    this->_bsplineSpiroBuild();
+}
+
+void PenTool::_bsplineSpiroOn()
+{
+    if(!this->red_curve->is_unset()){
+        using Geom::X;
+        using Geom::Y;
+        this->npoints = 5;
+        this->p[0] = *this->red_curve->first_point();
+        this->p[3] = this->red_curve->first_segment()->finalPoint();
+        this->p[2] = this->p[3] + (1./3)*(this->p[0] - this->p[3]);
+        this->p[2] = Geom::Point(this->p[2][X] + HANDLE_CUBIC_GAP,this->p[2][Y] + HANDLE_CUBIC_GAP);
+    }
+}
+
+void PenTool::_bsplineSpiroOff()
+{
+    if(!this->red_curve->is_unset()){
+        this->npoints = 5;
+        this->p[0] = *this->red_curve->first_point();
+        this->p[3] = this->red_curve->first_segment()->finalPoint();
+        this->p[2] = this->p[3];
+    }
+}
+
+void PenTool::_bsplineSpiroStartAnchor(bool shift)
+{
+    if(this->sa->curve->is_unset()){
+        return;
+    }
+
+    LivePathEffect::LPEBSpline *lpe_bsp = nullptr;
+
+    if (SP_IS_LPE_ITEM(this->white_item) && SP_LPE_ITEM(this->white_item)->hasPathEffect()){
+        Inkscape::LivePathEffect::Effect *thisEffect =
+            SP_LPE_ITEM(this->white_item)->getFirstPathEffectOfType(Inkscape::LivePathEffect::BSPLINE);
+        if(thisEffect){
+            lpe_bsp = dynamic_cast<LivePathEffect::LPEBSpline*>(thisEffect->getLPEObj()->get_lpe());
+        }
+    }
+    if(lpe_bsp){
+        this->bspline = true;
+    }else{
+        this->bspline = false;
+    }
+    LivePathEffect::LPESpiro *lpe_spi = nullptr;
+
+    if (SP_IS_LPE_ITEM(this->white_item) && SP_LPE_ITEM(this->white_item)->hasPathEffect()){
+        Inkscape::LivePathEffect::Effect *thisEffect =
+            SP_LPE_ITEM(this->white_item)->getFirstPathEffectOfType(Inkscape::LivePathEffect::SPIRO);
+        if(thisEffect){
+            lpe_spi = dynamic_cast<LivePathEffect::LPESpiro*>(thisEffect->getLPEObj()->get_lpe());
+        }
+    }
+    if(lpe_spi){
+        this->spiro = true;
+    }else{
+        this->spiro = false;
+    }
+    if(!this->spiro && !this->bspline){
+        _bsplineSpiroColor();
+        return;
+    }
+    if(shift){
+        this->_bsplineSpiroStartAnchorOff();
+    } else {
+        this->_bsplineSpiroStartAnchorOn();
+    }
+}
+
+void PenTool::_bsplineSpiroStartAnchorOn()
+{
+    using Geom::X;
+    using Geom::Y;
+    Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*this->sa_overwrited ->last_segment());
+    auto last_segment = std::make_unique<SPCurve>();
+    Geom::Point point_a = this->sa_overwrited->last_segment()->initialPoint();
+    Geom::Point point_d = *this->sa_overwrited->last_point();
+    Geom::Point point_c = point_d + (1./3)*(point_a - point_d);
+    point_c = Geom::Point(point_c[X] + HANDLE_CUBIC_GAP, point_c[Y] + HANDLE_CUBIC_GAP);
+    if(cubic){
+        last_segment->moveto(point_a);
+        last_segment->curveto((*cubic)[1],point_c,point_d);
+    }else{
+        last_segment->moveto(point_a);
+        last_segment->curveto(point_a,point_c,point_d);
+    }
+    if( this->sa_overwrited->get_segment_count() == 1){
+        this->sa_overwrited = std::move(last_segment);
+    }else{
+        //we eliminate the last segment
+        this->sa_overwrited->backspace();
+        //and we add it again with the recreation
+        sa_overwrited->append_continuous(*last_segment);
+    }
+}
+
+void PenTool::_bsplineSpiroStartAnchorOff()
+{
+    Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*this->sa_overwrited->last_segment());
+    if(cubic){
+        auto last_segment = std::make_unique<SPCurve>();
+        last_segment->moveto((*cubic)[0]);
+        last_segment->curveto((*cubic)[1],(*cubic)[3],(*cubic)[3]);
+        if( this->sa_overwrited->get_segment_count() == 1){
+            this->sa_overwrited = std::move(last_segment);
+        }else{
+            //we eliminate the last segment
+            this->sa_overwrited->backspace();
+            //and we add it again with the recreation
+            sa_overwrited->append_continuous(*last_segment);
+        }
+    }
+}
+
+void PenTool::_bsplineSpiroMotion(guint const state){
+    bool shift = state & GDK_SHIFT_MASK;
+    if(!this->spiro && !this->bspline){
+        return;
+    }
+    using Geom::X;
+    using Geom::Y;
+    if(this->red_curve->is_unset()) return;
+    this->npoints = 5;
+    std::unique_ptr<SPCurve> tmp_curve(new SPCurve());
+    this->p[2] = this->p[3] + (1./3)*(this->p[0] - this->p[3]);
+    this->p[2] = Geom::Point(this->p[2][X] + HANDLE_CUBIC_GAP,this->p[2][Y] + HANDLE_CUBIC_GAP);
+    if (this->green_curve->is_unset() && !this->sa) {
+        this->p[1] = this->p[0] + (1./3)*(this->p[3] - this->p[0]);
+        this->p[1] = Geom::Point(this->p[1][X] + HANDLE_CUBIC_GAP, this->p[1][Y] + HANDLE_CUBIC_GAP);
+        if(shift){
+            this->p[2] = this->p[3];
+        }
+    } else if (!this->green_curve->is_unset()){
+        tmp_curve = this->green_curve->copy();
+    } else {
+        tmp_curve = this->sa_overwrited->copy();
+    }
+    if ((state & GDK_MOD1_MASK ) && previous != Geom::Point(0,0)) { //ALT drag
+        this->p[0] = this->p[0] + (this->p[3] - previous);
+    }
+    if(!tmp_curve ->is_unset()){
+        Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*tmp_curve ->last_segment());
+        if ((state & GDK_MOD1_MASK ) &&
+            !Geom::are_near(*tmp_curve ->last_point(), this->p[0], 0.1))
+        {
+            auto previous_weight_power = std::make_unique<SPCurve>();
+            Geom::D2< Geom::SBasis > SBasisweight_power;
+            previous_weight_power->moveto(tmp_curve ->last_segment()->initialPoint());
+            previous_weight_power->lineto(this->p[0]);
+            SBasisweight_power = previous_weight_power->first_segment()->toSBasis();
+            if( tmp_curve ->get_segment_count() == 1){
+                Geom::Point initial = tmp_curve ->last_segment()->initialPoint();
+                tmp_curve->reset();
+                tmp_curve->moveto(initial);
+            }else{
+                tmp_curve->backspace();
+            }
+            if(this->bspline && cubic && !Geom::are_near((*cubic)[2],(*cubic)[3])){
+                tmp_curve->curveto(SBasisweight_power.valueAt(0.33334), SBasisweight_power.valueAt(0.66667), this->p[0]);
+            } else if(this->bspline && cubic) {
+                tmp_curve->curveto(SBasisweight_power.valueAt(0.33334), this->p[0], this->p[0]);
+            } else if (cubic && !Geom::are_near((*cubic)[2],(*cubic)[3])) {
+                tmp_curve->curveto((*cubic)[1], (*cubic)[2] + (this->p[3] - previous), this->p[0]);
+            } else if (cubic){
+                tmp_curve->curveto((*cubic)[1], this->p[0], this->p[0]);
+            } else {
+                tmp_curve->lineto(this->p[0]);
+            }
+            cubic = dynamic_cast<Geom::CubicBezier const*>(&*tmp_curve ->last_segment());
+            if (this->sa && this->green_curve->is_unset()) {
+                this->sa_overwrited = tmp_curve->copy();
+            }
+            this->green_curve = tmp_curve->copy();
+        }
+        if (cubic) {
+            if (this->bspline) {
+                auto weight_power = std::make_unique<SPCurve>();
+                Geom::D2< Geom::SBasis > SBasisweight_power;
+                weight_power->moveto(this->red_curve->last_segment()->initialPoint());
+                weight_power->lineto(*this->red_curve->last_point());
+                SBasisweight_power = weight_power->first_segment()->toSBasis();
+                this->p[1] = SBasisweight_power.valueAt(0.33334);
+                if(!Geom::are_near(this->p[1],this->p[0])){
+                    this->p[1] = Geom::Point(this->p[1][X] + HANDLE_CUBIC_GAP,this->p[1][Y] + HANDLE_CUBIC_GAP);
+                } else {
+                    this->p[1] = this->p[0];
+                }
+                if (shift) {
+                    this->p[2] = this->p[3];
+                }
+                if(Geom::are_near((*cubic)[3], (*cubic)[2])) {
+                    this->p[1] = this->p[0];
+                }
+            } else {
+                this->p[1] =  (*cubic)[3] + ((*cubic)[3] - (*cubic)[2] );
+            }
+        } else {
+            this->p[1] = this->p[0];
+            if (shift) {
+                this->p[2] = this->p[3];
+            }
+        }
+        previous = *this->red_curve->last_point();
+        auto red = std::make_unique<SPCurve>();
+        red->moveto(this->p[0]);
+        red->curveto(this->p[1],this->p[2],this->p[3]);
+        this->red_bpath->set_bpath(red.get(), true);
+    }
+
+    if(this->anchor_statusbar && !this->red_curve->is_unset()){
+        if(shift){
+            this->_bsplineSpiroEndAnchorOff();
+        }else{
+            this->_bsplineSpiroEndAnchorOn();
+        }
+    }
+
+    // remove old piecewise green canvasitems
+    for (auto path: this->green_bpaths) {
+        delete path;
+    }
+    this->green_bpaths.clear();
+
+    // one canvas bpath for all of green_curve
+    auto canvas_shape = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), green_curve.get(), true);
+    canvas_shape->set_stroke(green_color);
+    canvas_shape->set_fill(0x0, SP_WIND_RULE_NONZERO);
+    this->green_bpaths.push_back(canvas_shape);
+
+    this->_bsplineSpiroBuild();
+}
+
+void PenTool::_bsplineSpiroEndAnchorOn()
+{
+
+    using Geom::X;
+    using Geom::Y;
+    this->p[2] = this->p[3] + (1./3)*(this->p[0] - this->p[3]);
+    this->p[2] = Geom::Point(this->p[2][X] + HANDLE_CUBIC_GAP,this->p[2][Y] + HANDLE_CUBIC_GAP);
+    std::unique_ptr<SPCurve> tmp_curve(new SPCurve());
+    std::unique_ptr<SPCurve> last_segment(new SPCurve());
+    Geom::Point point_c(0,0);
+    if( this->green_anchor && this->green_anchor->active ){
+        tmp_curve = this->green_curve->create_reverse();
+        if(this->green_curve->get_segment_count()==0){
+            return;
+        }
+    } else if(this->sa){
+        tmp_curve = this->sa_overwrited->create_reverse();
+    }else{
+        return;
+    }
+    Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*tmp_curve ->last_segment());
+    if(this->bspline){
+        point_c = *tmp_curve ->last_point() + (1./3)*(tmp_curve ->last_segment()->initialPoint() - *tmp_curve ->last_point());
+        point_c = Geom::Point(point_c[X] + HANDLE_CUBIC_GAP, point_c[Y] + HANDLE_CUBIC_GAP);
+    }else{
+        point_c = this->p[3] + this->p[3] - this->p[2];
+    }
+    if(cubic){
+        last_segment->moveto((*cubic)[0]);
+        last_segment->curveto((*cubic)[1],point_c,(*cubic)[3]);
+    }else{
+        last_segment->moveto(tmp_curve ->last_segment()->initialPoint());
+        last_segment->lineto(*tmp_curve ->last_point());
+    }
+    if( tmp_curve ->get_segment_count() == 1){
+        tmp_curve  = std::move(last_segment);
+    }else{
+        //we eliminate the last segment
+        tmp_curve ->backspace();
+        //and we add it again with the recreation
+        tmp_curve ->append_continuous(*last_segment);
+    }
+    tmp_curve = tmp_curve->create_reverse();
+    if( this->green_anchor && this->green_anchor->active )
+    {
+        this->green_curve->reset();
+        this->green_curve = std::move(tmp_curve);
+    }else{
+        this->sa_overwrited->reset();
+        this->sa_overwrited = std::move(tmp_curve);
+    }
+}
+
+void PenTool::_bsplineSpiroEndAnchorOff()
+{
+
+    std::unique_ptr<SPCurve> tmp_curve(new SPCurve());
+    std::unique_ptr<SPCurve> last_segment(new SPCurve());
+    this->p[2] = this->p[3];
+    if( this->green_anchor && this->green_anchor->active ){
+        tmp_curve = this->green_curve->create_reverse();
+        if(this->green_curve->get_segment_count()==0){
+            return;
+        }
+    } else if(this->sa){
+        tmp_curve = this->sa_overwrited->create_reverse();
+    }else{
+        return;
+    }
+    Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*tmp_curve ->last_segment());
+    if(cubic){
+        last_segment->moveto((*cubic)[0]);
+        last_segment->curveto((*cubic)[1],(*cubic)[3],(*cubic)[3]);
+    }else{
+        last_segment->moveto(tmp_curve ->last_segment()->initialPoint());
+        last_segment->lineto(*tmp_curve ->last_point());
+    }
+    if( tmp_curve ->get_segment_count() == 1){
+        tmp_curve  = std::move(last_segment);
+    }else{
+        //we eliminate the last segment
+        tmp_curve ->backspace();
+        //and we add it again with the recreation
+        tmp_curve ->append_continuous(*last_segment);
+    }
+    tmp_curve = tmp_curve->create_reverse();
+
+    if( this->green_anchor && this->green_anchor->active )
+    {
+        this->green_curve->reset();
+        this->green_curve = std::move(tmp_curve);
+    }else{
+        this->sa_overwrited->reset();
+        this->sa_overwrited = std::move(tmp_curve);
+    }
+}
+
+//prepares the curves for its transformation into BSpline curve.
+void PenTool::_bsplineSpiroBuild()
+{
+    if(!this->spiro && !this->bspline){
+        return;
+    }
+
+    //We create the base curve
+    auto curve = std::make_unique<SPCurve>();
+    //If we continuate the existing curve we add it at the start
+    if(this->sa && !this->sa->curve->is_unset()){
+        curve = this->sa_overwrited->copy();
+    }
+
+    if (!this->green_curve->is_unset()){
+        curve->append_continuous(*green_curve);
+    }
+
+    //and the red one
+    if (!this->red_curve->is_unset()){
+        this->red_curve->reset();
+        this->red_curve->moveto(this->p[0]);
+        if(this->anchor_statusbar && !this->sa && !(this->green_anchor && this->green_anchor->active)){
+            this->red_curve->curveto(this->p[1],this->p[3],this->p[3]);
+        }else{
+            this->red_curve->curveto(this->p[1],this->p[2],this->p[3]);
+        }
+        red_bpath->set_bpath(red_curve.get(), true);
+        curve->append_continuous(*red_curve);
+    }
+    previous = *this->red_curve->last_point();
+    if(!curve->is_unset()){
+        // close the curve if the final points of the curve are close enough
+        if(Geom::are_near(curve->first_path()->initialPoint(), curve->last_path()->finalPoint())){
+            curve->closepath_current();
+        }
+        //TODO: CALL TO CLONED FUNCTION SPIRO::doEffect IN lpe-spiro.cpp
+        //For example
+        //using namespace Inkscape::LivePathEffect;
+        //LivePathEffectObject *lpeobj = static_cast<LivePathEffectObject*> (curve);
+        //Effect *spr = static_cast<Effect*> ( new LPEbspline(lpeobj) );
+        //spr->doEffect(curve);
+        if (this->bspline) {
+            Geom::PathVector hp;
+            LivePathEffect::sp_bspline_do_effect(curve.get(), 0, hp);
+        } else {
+            LivePathEffect::sp_spiro_do_effect(curve.get());
+        }
+
+        blue_bpath->set_bpath(curve.get(), true);
+        blue_bpath->set_stroke(blue_color);
+        blue_bpath->show();
+
+        this->blue_curve->reset();
+        //We hide the holders that doesn't contribute anything
+        if (this->spiro){
+            c1->set_position(p[0]);
+            c1->show();
+        } else {
+            c1->hide();
+        }
+        c0->hide();
+        cl0->hide();
+        cl1->hide();
+    } else {
+        //if the curve is empty
+        blue_bpath->hide();
+    }
+}
+
+void PenTool::_setSubsequentPoint(Geom::Point const p, bool statusbar, guint status) {
+    g_assert( this->npoints != 0 );
+
+    // todo: Check callers to see whether 2 <= npoints is guaranteed.
+
+    this->p[2] = p;
+    this->p[3] = p;
+    this->p[4] = p;
+    this->npoints = 5;
+    this->red_curve->reset();
+    bool is_curve;
+    this->red_curve->moveto(this->p[0]);
+    if (this->polylines_paraxial && !statusbar) {
+        // we are drawing horizontal/vertical lines and hit an anchor;
+        Geom::Point const origin = this->p[0];
+        // if the previous point and the anchor are not aligned either horizontally or vertically...
+        if ((std::abs(p[Geom::X] - origin[Geom::X]) > 1e-9) && (std::abs(p[Geom::Y] - origin[Geom::Y]) > 1e-9)) {
+            // ...then we should draw an L-shaped path, consisting of two paraxial segments
+            Geom::Point intermed = p;
+            this->_setToNearestHorizVert(intermed, status);
+            this->red_curve->lineto(intermed);
+        }
+        this->red_curve->lineto(p);
+        is_curve = false;
+    } else {
+        // one of the 'regular' modes
+        if (this->p[1] != this->p[0] || this->spiro) {
+            this->red_curve->curveto(this->p[1], p, p);
+            is_curve = true;
+        } else {
+            this->red_curve->lineto(p);
+            is_curve = false;
+        }
+    }
+
+    red_bpath->set_bpath(red_curve.get(), true);
+
+    if (statusbar) {
+        gchar *message;
+        if(this->spiro || this->bspline){
+            message = is_curve ?
+            _("<b>Curve segment</b>: angle %3.2f&#176;; <b>Shift+Click</b> creates cusp node, <b>ALT</b> moves previous, <b>Enter</b> or <b>Shift+Enter</b> to finish" ):
+            _("<b>Line segment</b>: angle %3.2f&#176;; <b>Shift+Click</b> creates cusp node, <b>ALT</b> moves previous, <b>Enter</b> or <b>Shift+Enter</b> to finish");
+            this->_setAngleDistanceStatusMessage(p, 0, message);
+        } else {
+            message = is_curve ?
+            _("<b>Curve segment</b>: angle %3.2f&#176;, distance %s; with <b>Ctrl</b> to snap angle, <b>Enter</b> or <b>Shift+Enter</b> to finish the path" ):
+            _("<b>Line segment</b>: angle %3.2f&#176;, distance %s; with <b>Ctrl</b> to snap angle, <b>Enter</b> or <b>Shift+Enter</b> to finish the path");
+            this->_setAngleDistanceStatusMessage(p, 0, message);
+        }
+
+    }
+}
+
+
+void PenTool::_setCtrl(Geom::Point const q, guint const state) { // use 'q' as 'p' shadows member variable.
+    c1->show();
+    cl1->show();
+
+    if ( this->npoints == 2 ) {
+        this->p[1] = q;
+        c0->hide();
+        cl0->hide();
+        c1->set_position(p[1]);
+        cl1->set_coords(p[0], p[1]);
+        this->_setAngleDistanceStatusMessage(q, 0, _("<b>Curve handle</b>: angle %3.2f&#176;, length %s; with <b>Ctrl</b> to snap angle"));
+    } else if ( this->npoints == 5 ) {
+        this->p[4] = q;
+        c0->show();
+        cl0->show();
+        bool is_symm = false;
+        if ( ( ( this->mode == PenTool::MODE_CLICK ) && ( state & GDK_CONTROL_MASK ) ) ||
+             ( ( this->mode == PenTool::MODE_DRAG ) &&  !( state & GDK_SHIFT_MASK  ) ) ) {
+            Geom::Point delta = q - this->p[3];
+            this->p[2] = this->p[3] - delta;
+            is_symm = true;
+            this->red_curve->reset();
+            this->red_curve->moveto(this->p[0]);
+            this->red_curve->curveto(this->p[1], this->p[2], this->p[3]);
+            red_bpath->set_bpath(red_curve.get(), true);
+        }
+        c0->set_position(this->p[2]);
+        cl0->set_coords(this->p[3], this->p[2]);
+        c1->set_position(this->p[4]);
+        cl1->set_coords(this->p[3], this->p[4]);
+
+
+
+        gchar *message = is_symm ?
+            _("<b>Curve handle, symmetric</b>: angle %3.2f&#176;, length %s; with <b>Ctrl</b> to snap angle, with <b>Shift</b> to move this handle only") :
+            _("<b>Curve handle</b>: angle %3.2f&#176;, length %s; with <b>Ctrl</b> to snap angle, with <b>Shift</b> to move this handle only");
+        this->_setAngleDistanceStatusMessage(q, 3, message);
+    } else {
+        g_warning("Something bad happened - npoints is %d", this->npoints);
+    }
+}
+
+void PenTool::_finishSegment(Geom::Point const q, guint const state) { // use 'q' as 'p' shadows member variable.
+    if (this->polylines_paraxial) {
+        this->nextParaxialDirection(q, this->p[0], state);
+    }
+
+    ++num_clicks;
+
+
+    if (!this->red_curve->is_unset()) {
+        this->_bsplineSpiro(state & GDK_SHIFT_MASK);
+        if(!this->green_curve->is_unset() &&
+           !Geom::are_near(*this->green_curve->last_point(),this->p[0]))
+        {
+          std::unique_ptr<SPCurve> lsegment(new SPCurve());
+            Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const*>(&*this->green_curve->last_segment());
+            if (cubic) {
+                lsegment->moveto((*cubic)[0]);
+                lsegment->curveto((*cubic)[1], this->p[0] - ((*cubic)[2] - (*cubic)[3]), *this->red_curve->first_point());
+                this->green_curve->backspace();
+                green_curve->append_continuous(*lsegment);
+            }
+        }
+        this->green_curve->append_continuous(*red_curve);
+        auto curve = this->red_curve->copy();
+
+        /// \todo fixme:
+        auto canvas_shape = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), curve.get(), true);
+        canvas_shape->set_stroke(green_color);
+        canvas_shape->set_fill(0x0, SP_WIND_RULE_NONZERO);
+        this->green_bpaths.push_back(canvas_shape);
+
+        this->p[0] = this->p[3];
+        this->p[1] = this->p[4];
+        this->npoints = 2;
+
+        this->red_curve->reset();
+    }
+}
+
+// Partial fix for https://bugs.launchpad.net/inkscape/+bug/171990
+// TODO: implement the redo feature
+bool PenTool::_undoLastPoint() {
+    bool ret = false;
+
+    if ( this->green_curve->is_unset() || (this->green_curve->last_segment() == nullptr) ) {
+        if (!this->red_curve->is_unset()) {
+            this->_cancel ();
+            ret = true;
+        } else {
+            // do nothing; this event should be handled upstream
+        }
+    } else {
+        // Reset red curve
+        this->red_curve->reset();
+        // Get last segment
+        if ( this->green_curve->is_unset() ) {
+            g_warning("pen_handle_key_press, case GDK_KP_Delete: Green curve is empty");
+            return false;
+        }
+        // The code below assumes that this->green_curve has only ONE path !
+        Geom::Curve const * crv = this->green_curve->last_segment();
+        this->p[0] = crv->initialPoint();
+        if ( Geom::CubicBezier const * cubic = dynamic_cast<Geom::CubicBezier const *>(crv)) {
+            this->p[1] = (*cubic)[1];
+
+        } else {
+            this->p[1] = this->p[0];
+        }
+
+        // assign the value in a third of the distance of the last segment.
+        if (this->bspline){
+            this->p[1] = this->p[0] + (1./3)*(this->p[3] - this->p[0]);
+        }
+
+        Geom::Point const pt( (this->npoints < 4) ? crv->finalPoint() : this->p[3] );
+
+        this->npoints = 2;
+        // delete the last segment of the green curve and green bpath
+        if (this->green_curve->get_segment_count() == 1) {
+            this->npoints = 5;
+            if (!this->green_bpaths.empty()) {
+                delete this->green_bpaths.back();
+                this->green_bpaths.pop_back();
+            }
+            this->green_curve->reset();
+        } else {
+            this->green_curve->backspace();
+            if (this->green_bpaths.size() > 1) {
+                delete this->green_bpaths.back();
+                this->green_bpaths.pop_back();
+            } else if (this->green_bpaths.size() == 1) {
+                green_bpaths.back()->set_bpath(green_curve.get(), true);
+            }
+        }
+
+        // assign the value of this->p[1] to the opposite of the green line last segment
+        if (this->spiro){
+            Geom::CubicBezier const *cubic = dynamic_cast<Geom::CubicBezier const *>(this->green_curve->last_segment());
+            if ( cubic ) {
+                this->p[1] = (*cubic)[3] + (*cubic)[3] - (*cubic)[2];
+                c1->set_position(this->p[0]);
+            } else {
+                this->p[1] = this->p[0];
+            }
+        }
+
+        c0->hide();
+        c1->hide();
+        cl0->hide();
+        cl1->hide();
+        this->state = PenTool::POINT;
+
+        if(this->polylines_paraxial) {
+            // We compare the point we're removing with the nearest horiz/vert to
+            // see if the line was added with SHIFT or not.
+            Geom::Point compare(pt);
+            this->_setToNearestHorizVert(compare, 0);
+            if ((std::abs(compare[Geom::X] - pt[Geom::X]) > 1e-9)
+                || (std::abs(compare[Geom::Y] - pt[Geom::Y]) > 1e-9)) {
+                this->paraxial_angle = this->paraxial_angle.cw();
+            }
+        }
+        this->_setSubsequentPoint(pt, true);
+
+        //redraw
+        this->_bsplineSpiroBuild();
+        ret = true;
+    }
+
+    return ret;
+}
+
+void PenTool::_finish(gboolean const closed) {
+    if (this->expecting_clicks_for_LPE > 1) {
+        // don't let the path be finished before we have collected the required number of mouse clicks
+        return;
+    }
+
+
+    this->num_clicks = 0;
+
+    this->_disableEvents();
+
+    this->message_context->clear();
+
+    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Drawing finished"));
+
+    // cancelate line without a created segment
+    this->red_curve->reset();
+    spdc_concat_colors_and_flush(this, closed);
+    this->sa = nullptr;
+    this->ea = nullptr;
+
+    this->npoints = 0;
+    this->state = PenTool::POINT;
+
+    c0->hide();
+    c1->hide();
+    cl0->hide();
+    cl1->hide();
+
+    this->green_anchor.reset();
+
+    this->_enableEvents();
+}
+
+void PenTool::_disableEvents() {
+    this->events_disabled = true;
+}
+
+void PenTool::_enableEvents() {
+    g_return_if_fail(this->events_disabled != 0);
+
+    this->events_disabled = false;
+}
+
+void PenTool::waitForLPEMouseClicks(Inkscape::LivePathEffect::EffectType effect_type, unsigned int num_clicks, bool use_polylines) {
+    if (effect_type == Inkscape::LivePathEffect::INVALID_LPE)
+        return;
+
+    this->waiting_LPE_type = effect_type;
+    this->expecting_clicks_for_LPE = num_clicks;
+    this->polylines_only = use_polylines;
+    this->polylines_paraxial = false; // TODO: think if this is correct for all cases
+}
+
+void PenTool::nextParaxialDirection(Geom::Point const &pt, Geom::Point const &origin, guint state) {
+    //
+    // after the first mouse click we determine whether the mouse pointer is closest to a
+    // horizontal or vertical segment; for all subsequent mouse clicks, we use the direction
+    // orthogonal to the last one; pressing Shift toggles the direction
+    //
+    // num_clicks is not reliable because spdc_pen_finish_segment is sometimes called too early
+    // (on first mouse release), in which case num_clicks immediately becomes 1.
+    // if (this->num_clicks == 0) {
+
+    if (this->green_curve->is_unset()) {
+        // first mouse click
+        double h = pt[Geom::X] - origin[Geom::X];
+        double v = pt[Geom::Y] - origin[Geom::Y];
+        this->paraxial_angle = Geom::Point(h, v).ccw();
+    }
+    if(!(state & GDK_SHIFT_MASK)) {
+        this->paraxial_angle = this->paraxial_angle.ccw();
+    }
+}
+
+void PenTool::_setToNearestHorizVert(Geom::Point &pt, guint const state) const {
+    Geom::Point const origin = this->p[0];
+    Geom::Point const target = (state & GDK_SHIFT_MASK) ? this->paraxial_angle : this->paraxial_angle.ccw();
+
+    // Create a horizontal or vertical constraint line
+    Inkscape::Snapper::SnapConstraint cl(origin, target);
+
+    // Snap along the constraint line; if we didn't snap then still the constraint will be applied
+    SnapManager &m = _desktop->namedview->snap_manager;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    // selection->singleItem() is the item that is currently being drawn. This item will not be snapped to (to avoid self-snapping)
+    // TODO: Allow snapping to the stationary parts of the item, and only ignore the last segment
+
+    m.setup(_desktop, true, selection->singleItem());
+    m.constrainedSnapReturnByRef(pt, Inkscape::SNAPSOURCE_NODE_HANDLE, cl);
+    m.unSetup();
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/pen-tool.h b/src/ui/tools/pen-tool.h
new file mode 100644
index 0000000..bd48ce7
--- /dev/null
+++ b/src/ui/tools/pen-tool.h
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * PenTool: a context for pen tool events.
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef SEEN_PEN_CONTEXT_H
+#define SEEN_PEN_CONTEXT_H
+
+#include <sigc++/sigc++.h>
+
+#include "ui/tools/freehand-base.h"
+#include "live_effects/effect.h"
+
+#define SP_PEN_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::PenTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_PEN_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::PenTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+
+class CanvasItemCtrl;
+class CanvasItemCurve;
+
+namespace UI {
+namespace Tools {
+
+/**
+ * PenTool: a context for pen tool events.
+ */
+class PenTool : public FreehandBase {
+public:
+    PenTool(SPDesktop *desktop,
+        std::string prefs_path = "/tools/freehand/pen",
+        const std::string& cursor_filename = "pen.svg");
+    ~PenTool() override;
+
+    enum Mode {
+        MODE_CLICK,
+        MODE_DRAG
+    };
+
+    enum State {
+        POINT,
+        CONTROL,
+        CLOSE,
+        STOP,
+        DEAD
+    };
+
+    Geom::Point p[5];
+    Geom::Point previous;
+    /** \invar npoints in {0, 2, 5}. */
+    // npoints somehow determines the type of the node (what does it mean, exactly? the number of Bezier handles?)
+    gint npoints = 0;
+
+    Mode mode = MODE_CLICK;
+    State state = POINT;
+    bool polylines_only = false;
+    bool polylines_paraxial = false;
+    Geom::Point paraxial_angle;
+
+    bool spiro = false;  // Spiro mode active?
+    bool bspline = false; // BSpline mode active?
+    int num_clicks = 0;;
+
+    unsigned int expecting_clicks_for_LPE = 0; // if positive, finish the path after this many clicks
+    Inkscape::LivePathEffect::Effect *waiting_LPE = nullptr; // if NULL, waiting_LPE_type in SPDrawContext is taken into account
+    SPLPEItem *waiting_item = nullptr;
+
+    Inkscape::CanvasItemCtrl *c0 = nullptr; // Start point of path.
+    Inkscape::CanvasItemCtrl *c1 = nullptr; // End point of path.
+    
+    Inkscape::CanvasItemCurve *cl0 = nullptr;
+    Inkscape::CanvasItemCurve *cl1 = nullptr;
+    
+    bool events_disabled = false;
+
+    void nextParaxialDirection(Geom::Point const &pt, Geom::Point const &origin, guint state);
+    void setPolylineMode();
+    bool hasWaitingLPE();
+    void waitForLPEMouseClicks(Inkscape::LivePathEffect::EffectType effect_type, unsigned int num_clicks, bool use_polylines = true);
+
+protected:
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    bool item_handler(SPItem* item, GdkEvent* event) override;
+
+private:
+    bool _handleButtonPress(GdkEventButton const &bevent);
+    bool _handleMotionNotify(GdkEventMotion const &mevent);
+    bool _handleButtonRelease(GdkEventButton const &revent);
+    bool _handle2ButtonPress(GdkEventButton const &bevent);
+    bool _handleKeyPress(GdkEvent *event);
+    //this function changes the colors red, green and blue making them transparent or not depending on if the function uses spiro
+    void _bsplineSpiroColor();
+    //creates a node in bspline or spiro modes
+    void _bsplineSpiro(bool shift);
+    //creates a node in bspline or spiro modes
+    void _bsplineSpiroOn();
+    //creates a CUSP node
+    void _bsplineSpiroOff();
+    //continues the existing curve in bspline or spiro mode
+    void _bsplineSpiroStartAnchor(bool shift);
+    //continues the existing curve with the union node in bspline or spiro modes
+    void _bsplineSpiroStartAnchorOn();
+    //continues an existing curve with the union node in CUSP mode
+    void _bsplineSpiroStartAnchorOff();
+    //modifies the "red_curve" when it detects movement
+    void _bsplineSpiroMotion(guint const state);
+    //closes the curve with the last node in bspline or spiro mode
+    void _bsplineSpiroEndAnchorOn();
+    //closes the curve with the last node in CUSP mode
+    void _bsplineSpiroEndAnchorOff();
+    //apply the effect
+    void _bsplineSpiroBuild();
+
+    void _setInitialPoint(Geom::Point const p);
+    void _setSubsequentPoint(Geom::Point const p, bool statusbar, guint status = 0);
+    void _setCtrl(Geom::Point const p, guint state);
+    void _finishSegment(Geom::Point p, guint state);
+    bool _undoLastPoint();
+
+    void _finish(gboolean closed);
+
+    void _resetColors();
+
+    void _disableEvents();
+    void _enableEvents();
+
+    void _setToNearestHorizVert(Geom::Point &pt, guint const state) const;
+
+    void _setAngleDistanceStatusMessage(Geom::Point const p, int pc_point_to_compare, gchar const *message);
+
+    void _lastpointToLine();
+    void _lastpointToCurve();
+    void _lastpointMoveScreen(gdouble x, gdouble y);
+    void _lastpointMove(gdouble x, gdouble y);
+    void _redrawAll();
+
+    void _endpointSnapHandle(Geom::Point &p, guint const state);
+    void _endpointSnap(Geom::Point &p, guint const state);
+
+    void _cancel();
+
+    sigc::connection _desktop_destroy;
+};
+
+}
+}
+}
+
+#endif /* !SEEN_PEN_CONTEXT_H */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/pencil-tool.cpp b/src/ui/tools/pencil-tool.cpp
new file mode 100644
index 0000000..055f581
--- /dev/null
+++ b/src/ui/tools/pencil-tool.cpp
@@ -0,0 +1,1189 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * Pencil event context implementation.
+ */
+
+/*
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ * Copyright (C) 2004 Monash University
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <numeric> // For std::accumulate
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include <2geom/bezier-utils.h>
+#include <2geom/circle.h>
+#include <2geom/sbasis-to-bezier.h>
+#include <2geom/svg-path-parser.h>
+
+#include "pencil-tool.h"
+
+#include "context-fns.h"
+#include "desktop.h"
+#include "desktop-style.h"
+#include "layer-manager.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+#include "snap.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/snap-indicator.h"
+
+#include "livarot/Path.h"  // Simplify paths
+
+#include "live_effects/lpe-powerstroke-interpolators.h"
+#include "live_effects/lpe-powerstroke.h"
+#include "live_effects/lpe-simplify.h"
+#include "live_effects/lpeobject.h"
+
+#include "object/sp-lpe-item.h"
+#include "object/sp-path.h"
+#include "path/path-boolop.h"
+#include "style.h"
+
+#include "svg/svg.h"
+
+#include "ui/draw-anchor.h"
+#include "ui/tool/event-utils.h"
+
+#include "xml/node.h"
+#include "xml/sp-css-attr.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static Geom::Point pencil_drag_origin_w(0, 0);
+static bool pencil_within_tolerance = false;
+
+static bool in_svg_plane(Geom::Point const &p) { return Geom::LInfty(p) < 1e18; }
+const double HANDLE_CUBIC_GAP = 0.01;
+
+PencilTool::PencilTool(SPDesktop *desktop)
+    : FreehandBase(desktop, "/tools/freehand/pencil", "pencil.svg")
+    , p()
+    , _npoints(0)
+    , _state(SP_PENCIL_CONTEXT_IDLE)
+    , _req_tangent(0, 0)
+    , _is_drawing(false)
+    , sketch_n(0)
+    , _pressure_curve(nullptr)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/freehand/pencil/selcue")) {
+        this->enableSelectionCue();
+    }
+    this->_pressure_curve = std::make_unique<SPCurve>();
+    this->_is_drawing = false;
+    this->anchor_statusbar = false;
+}
+
+PencilTool::~PencilTool() {
+}
+
+void PencilTool::_extinput(GdkEvent *event) {
+    if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &this->pressure)) {
+        this->pressure = CLAMP (this->pressure, DDC_MIN_PRESSURE, DDC_MAX_PRESSURE);
+        is_tablet = true;
+    } else {
+        this->pressure = DDC_DEFAULT_PRESSURE;
+        is_tablet = false;
+    }
+}
+
+/** Snaps new node relative to the previous node. */
+void PencilTool::_endpointSnap(Geom::Point &p, guint const state) {
+    if ((state & GDK_CONTROL_MASK)) { //CTRL enables constrained snapping
+        if (this->_npoints > 0) {
+            spdc_endpoint_snap_rotation(this, p, this->p[0], state);
+        }
+    } else {
+        if (!(state & GDK_SHIFT_MASK)) { //SHIFT disables all snapping, except the angular snapping above
+                                         //After all, the user explicitly asked for angular snapping by
+                                         //pressing CTRL
+            std::optional<Geom::Point> origin = this->_npoints > 0 ? this->p[0] : std::optional<Geom::Point>();
+            spdc_endpoint_snap_free(this, p, origin, state);
+        } else {
+            _desktop->snapindicator->remove_snaptarget();
+        }
+    }
+}
+
+/**
+ * Callback for handling all pencil context events.
+ */
+bool PencilTool::root_handler(GdkEvent* event) {
+    bool ret = false;
+    this->_extinput(event);
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            ret = this->_handleButtonPress(event->button);
+            break;
+
+        case GDK_MOTION_NOTIFY:
+            ret = this->_handleMotionNotify(event->motion);
+            break;
+
+        case GDK_BUTTON_RELEASE:
+            ret = this->_handleButtonRelease(event->button);
+            break;
+
+        case GDK_KEY_PRESS:
+            ret = this->_handleKeyPress(event->key);
+            break;
+
+        case GDK_KEY_RELEASE:
+            ret = this->_handleKeyRelease(event->key);
+            break;
+
+        default:
+            break;
+    }
+    if (!ret) {
+        ret = FreehandBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+bool PencilTool::_handleButtonPress(GdkEventButton const &bevent) {
+    bool ret = false;
+    if ( bevent.button == 1) {
+        Inkscape::Selection *selection = _desktop->getSelection();
+
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return true;
+        }
+
+        /* Grab mouse, so release will not pass unnoticed */
+        grabCanvasEvents();
+
+        Geom::Point const button_w(bevent.x, bevent.y);
+
+        /* Find desktop coordinates */
+        Geom::Point p = _desktop->w2d(button_w);
+
+        /* Test whether we hit any anchor. */
+        SPDrawAnchor *anchor = spdc_test_inside(this, button_w);
+        if (tablet_enabled) {
+            anchor = nullptr;
+        }
+        pencil_drag_origin_w = Geom::Point(bevent.x,bevent.y);
+        pencil_within_tolerance = true;
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        tablet_enabled = prefs->getBool("/tools/freehand/pencil/pressure", false);
+        switch (this->_state) {
+            case SP_PENCIL_CONTEXT_ADDLINE:
+                /* Current segment will be finished with release */
+                ret = true;
+                break;
+            default:
+                /* Set first point of sequence */
+                SnapManager &m = _desktop->namedview->snap_manager;
+                if (bevent.state & GDK_CONTROL_MASK) {
+                    m.setup(_desktop, true);
+                    if (!(bevent.state & GDK_SHIFT_MASK)) {
+                        m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                      }
+                    spdc_create_single_dot(this, p, "/tools/freehand/pencil", bevent.state);
+                    m.unSetup();
+                    ret = true;
+                    break;
+                }
+                if (anchor) {
+                    p = anchor->dp;
+                    //Put the start overwrite curve always on the same direction
+                    if (anchor->start) {
+                        this->sa_overwrited = anchor->curve->create_reverse();
+                    } else {
+                        this->sa_overwrited = anchor->curve->copy();
+                    }
+                    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Continuing selected path"));
+                } else {
+                    m.setup(_desktop, true);
+                    if (tablet_enabled) {
+                        // This is the first click of a new curve; deselect item so that
+                        // this curve is not combined with it (unless it is drawn from its
+                        // anchor, which is handled by the sibling branch above)
+                        selection->clear();
+                        _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
+                    } else if (!(bevent.state & GDK_SHIFT_MASK)) {
+                        // This is the first click of a new curve; deselect item so that
+                        // this curve is not combined with it (unless it is drawn from its
+                        // anchor, which is handled by the sibling branch above)
+                        selection->clear();
+                        _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Creating new path"));
+                        m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                    } else if (selection->singleItem() && SP_IS_PATH(selection->singleItem())) {
+                        _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Appending to selected path"));
+                        m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                    }
+                    m.unSetup();
+                }
+                if (!tablet_enabled) {
+                    this->sa = anchor;
+                }
+                this->_setStartpoint(p);
+                ret = true;
+                break;
+        }
+
+        set_high_motion_precision();
+        this->_is_drawing = true;
+    }
+    return ret;
+}
+
+bool PencilTool::_handleMotionNotify(GdkEventMotion const &mevent) {
+    if ((mevent.state & GDK_CONTROL_MASK) && (mevent.state & GDK_BUTTON1_MASK)) {
+        // mouse was accidentally moved during Ctrl+click;
+        // ignore the motion and create a single point
+        this->_is_drawing = false;
+        return true;
+    }
+    bool ret = false;
+
+    if ((mevent.state & GDK_BUTTON2_MASK)) {
+        // allow scrolling
+        return ret;
+    }
+
+    /* Test whether we hit any anchor. */
+    SPDrawAnchor *anchor = spdc_test_inside(this, pencil_drag_origin_w);
+    if (this->pressure == 0.0 && tablet_enabled && !anchor) {
+        // tablet event was accidentally fired without press;
+        return ret;
+    }
+    
+    if ( ( mevent.state & GDK_BUTTON1_MASK ) && this->_is_drawing) {
+        /* Grab mouse, so release will not pass unnoticed */
+        grabCanvasEvents();
+    }
+
+    /* Find desktop coordinates */
+    Geom::Point p = _desktop->w2d(Geom::Point(mevent.x, mevent.y));
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (pencil_within_tolerance) {
+        gint const tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+        if ( Geom::LInfty( Geom::Point(mevent.x,mevent.y) - pencil_drag_origin_w ) < tolerance ) {
+            return false;   // Do not drag if we're within tolerance from origin.
+        }
+    }
+
+    // Once the user has moved farther than tolerance from the original location
+    // (indicating they intend to move the object, not click), then always process the
+    // motion notify coordinates as given (no snapping back to origin)
+    pencil_within_tolerance = false;
+    
+    anchor = spdc_test_inside(this, Geom::Point(mevent.x,mevent.y));
+
+    switch (this->_state) {
+        case SP_PENCIL_CONTEXT_ADDLINE:
+            if (is_tablet) {
+                this->_state = SP_PENCIL_CONTEXT_FREEHAND;
+                return false;
+            }
+            /* Set red endpoint */
+            if (anchor) {
+                p = anchor->dp;
+            } else {
+                Geom::Point ptnr(p);
+                this->_endpointSnap(ptnr, mevent.state);
+                p = ptnr;
+            }
+            this->_setEndpoint(p);
+            ret = true;
+            break;
+        default:
+            /* We may be idle or already freehand */
+            if ( (mevent.state & GDK_BUTTON1_MASK) && this->_is_drawing ) {
+                if (this->_state == SP_PENCIL_CONTEXT_IDLE) {
+                    this->discard_delayed_snap_event();
+                }
+                this->_state = SP_PENCIL_CONTEXT_FREEHAND;
+
+                if ( !this->sa && !this->green_anchor ) {
+                    /* Create green anchor */
+                    this->green_anchor.reset(new SPDrawAnchor(this, this->green_curve.get(), TRUE, this->p[0]));
+                }
+                if (anchor) {
+                    p = anchor->dp;
+                }
+                if ( this->_npoints != 0) { // buttonpress may have happened before we entered draw context!
+                    if (this->ps.empty()) {
+                        // Only in freehand mode we have to add the first point also to this->ps (apparently)
+                        // - We cannot add this point in spdc_set_startpoint, because we only need it for freehand
+                        // - We cannot do this in the button press handler because at that point we don't know yet
+                        //   whether we're going into freehand mode or not
+                        this->ps.push_back(this->p[0]);
+                        if (tablet_enabled) {
+                            this->_wps.emplace_back(0, 0);
+                        }
+                    }
+                    this->_addFreehandPoint(p, mevent.state, false);
+                    ret = true;
+                }
+                if (anchor && !this->anchor_statusbar) {
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Release</b> here to close and finish the path."));
+                    this->anchor_statusbar = true;
+                    this->ea = anchor;
+                } else if (!anchor && this->anchor_statusbar) {
+                    this->message_context->clear();
+                    this->anchor_statusbar = false;
+                    this->ea = nullptr;
+                } else if (!anchor) {
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, _("Drawing a freehand path"));
+                    this->ea = nullptr;
+                }
+
+            } else {
+                if (anchor && !this->anchor_statusbar) {
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Drag</b> to continue the path from this point."));
+                    this->anchor_statusbar = true;
+                } else if (!anchor && this->anchor_statusbar) {
+                    this->message_context->clear();
+                    this->anchor_statusbar = false;
+                }
+            }
+
+            // Show the pre-snap indicator to communicate to the user where we would snap to if he/she were to
+            // a) press the mousebutton to start a freehand drawing, or
+            // b) release the mousebutton to finish a freehand drawing
+            if (!tablet_enabled && !this->sp_event_context_knot_mouseover()) {
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop, true);
+                m.preSnap(Inkscape::SnapCandidatePoint(p, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                m.unSetup();
+            }
+            break;
+    }
+    return ret;
+}
+
+bool PencilTool::_handleButtonRelease(GdkEventButton const &revent) {
+    bool ret = false;
+
+    set_high_motion_precision(false);
+
+    if ( revent.button == 1 && this->_is_drawing) {
+        this->_is_drawing = false;
+
+        /* Find desktop coordinates */
+        Geom::Point p = _desktop->w2d(Geom::Point(revent.x, revent.y));
+
+        /* Test whether we hit any anchor. */
+        SPDrawAnchor *anchor = spdc_test_inside(this, Geom::Point(revent.x, revent.y));
+
+        switch (this->_state) {
+            case SP_PENCIL_CONTEXT_IDLE:
+                /* Releasing button in idle mode means single click */
+                /* We have already set up start point/anchor in button_press */
+                if (!(revent.state & GDK_CONTROL_MASK) && !is_tablet) {
+                    // Ctrl+click creates a single point so only set context in ADDLINE mode when Ctrl isn't pressed
+                    this->_state = SP_PENCIL_CONTEXT_ADDLINE;
+                }
+                /*Or select the down item if we are in tablet mode*/
+                if (is_tablet) {
+                    using namespace Inkscape::LivePathEffect;
+                    SPItem *item = sp_event_context_find_item(_desktop, Geom::Point(revent.x, revent.y), FALSE, FALSE);
+                    if (item && (!this->white_item || item != white_item)) {
+                        if (SP_IS_LPE_ITEM(item)) {
+                            Effect* lpe = SP_LPE_ITEM(item)->getCurrentLPE();
+                            if (lpe) {
+                                LPEPowerStroke* ps = static_cast<LPEPowerStroke*>(lpe);
+                                if (ps) {
+                                    _desktop->selection->clear();
+                                    _desktop->selection->add(item);
+                                }
+                            }
+                        }
+                    }
+                }
+                break;
+            case SP_PENCIL_CONTEXT_ADDLINE:
+                /* Finish segment now */
+                if (anchor) {
+                    p = anchor->dp;
+                } else {
+                    this->_endpointSnap(p, revent.state);
+                }
+                this->ea = anchor;
+                this->_setEndpoint(p);
+                this->_finishEndpoint();
+                this->_state = SP_PENCIL_CONTEXT_IDLE;
+                this->discard_delayed_snap_event();
+                break;
+            case SP_PENCIL_CONTEXT_FREEHAND:
+                if (revent.state & GDK_MOD1_MASK && !tablet_enabled) {
+                    /* sketch mode: interpolate the sketched path and improve the current output path with the new interpolation. don't finish sketch */
+                    this->_sketchInterpolate();
+
+                    this->green_anchor.reset();
+
+                    this->_state = SP_PENCIL_CONTEXT_SKETCH;
+                } else {
+                    /* Finish segment now */
+                    /// \todo fixme: Clean up what follows (Lauris)
+                    if (anchor) {
+                        p = anchor->dp;
+                    } else {
+                        Geom::Point p_end = p;
+                        if (tablet_enabled) {
+                            this->_addFreehandPoint(p_end, revent.state, true);
+                            this->_pressure_curve->reset();
+                        } else {
+                            this->_endpointSnap(p_end, revent.state);
+                            if (p_end != p) {
+                                // then we must have snapped!
+                                this->_addFreehandPoint(p_end, revent.state, true);
+                            }
+                        }
+                    }
+
+                    this->ea = anchor;
+                    /* Write curves to object */
+                    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing freehand"));
+                    this->_interpolate();
+                    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+                    if (tablet_enabled) {
+                        gint shapetype = prefs->getInt("/tools/freehand/pencil/shape", 0);
+                        gint simplify = prefs->getInt("/tools/freehand/pencil/simplify", 0);
+                        gint mode = prefs->getInt("/tools/freehand/pencil/freehand-mode", 0);
+                        prefs->setInt("/tools/freehand/pencil/shape", 0);
+                        prefs->setInt("/tools/freehand/pencil/simplify", 0);
+                        prefs->setInt("/tools/freehand/pencil/freehand-mode", 0);
+                        spdc_concat_colors_and_flush(this, FALSE);
+                        prefs->setInt("/tools/freehand/pencil/freehand-mode", mode);
+                        prefs->setInt("/tools/freehand/pencil/simplify", simplify);
+                        prefs->setInt("/tools/freehand/pencil/shape", shapetype);
+                    } else {
+                        spdc_concat_colors_and_flush(this, FALSE);
+                    }
+                    this->points.clear();
+                    this->sa = nullptr;
+                    this->ea = nullptr;
+                    this->ps.clear();
+                    this->_wps.clear();
+                    this->green_anchor.reset();
+                    this->_state = SP_PENCIL_CONTEXT_IDLE;
+                    // reset sketch mode too
+                    this->sketch_n = 0;
+                }
+                break;
+            case SP_PENCIL_CONTEXT_SKETCH:
+            default:
+                break;
+        }
+
+        ungrabCanvasEvents();
+
+        ret = true;
+    }
+    return ret;
+}
+
+void PencilTool::_cancel() {
+    ungrabCanvasEvents();
+
+    this->_is_drawing = false;
+    this->_state = SP_PENCIL_CONTEXT_IDLE;
+    this->discard_delayed_snap_event();
+
+    this->red_curve->reset();
+    this->red_bpath->set_bpath(red_curve.get());
+
+    for (auto path : this->green_bpaths) {
+        delete path;
+    }
+    this->green_bpaths.clear();
+    this->green_curve->reset();
+    this->green_anchor.reset();
+
+    this->message_context->clear();
+    this->message_context->flash(Inkscape::NORMAL_MESSAGE, _("Drawing cancelled"));
+}
+
+bool PencilTool::_handleKeyPress(GdkEventKey const &event) {
+    bool ret = false;
+
+    switch (get_latin_keyval(&event)) {
+        case GDK_KEY_Up:
+        case GDK_KEY_Down:
+        case GDK_KEY_KP_Up:
+        case GDK_KEY_KP_Down:
+            // Prevent the zoom field from activation.
+            if (!Inkscape::UI::held_only_control(event)) {
+                ret = true;
+            }
+            break;
+        case GDK_KEY_Escape:
+            if (this->_npoints != 0) {
+                // if drawing, cancel, otherwise pass it up for deselecting
+                if (this->_state != SP_PENCIL_CONTEXT_IDLE) {
+                    this->_cancel();
+                    ret = true;
+                }
+            }
+            break;
+        case GDK_KEY_z:
+        case GDK_KEY_Z:
+            if (Inkscape::UI::held_only_control(event) && this->_npoints != 0) {
+                // if drawing, cancel, otherwise pass it up for undo
+                if (this->_state != SP_PENCIL_CONTEXT_IDLE) {
+                    this->_cancel();
+                    ret = true;
+                }
+            }
+            break;
+        case GDK_KEY_g:
+        case GDK_KEY_G:
+            if (Inkscape::UI::held_only_shift(event)) {
+                _desktop->selection->toGuides();
+                ret = true;
+            }
+            break;
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Meta_L:
+        case GDK_KEY_Meta_R:
+            if (this->_state == SP_PENCIL_CONTEXT_IDLE) {
+                _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("<b>Sketch mode</b>: holding <b>Alt</b> interpolates between sketched paths. Release <b>Alt</b> to finalize."));
+            }
+            break;
+        default:
+            break;
+    }
+    return ret;
+}
+
+bool PencilTool::_handleKeyRelease(GdkEventKey const &event) {
+    bool ret = false;
+
+    switch (get_latin_keyval(&event)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Meta_L:
+        case GDK_KEY_Meta_R:
+            if (this->_state == SP_PENCIL_CONTEXT_SKETCH) {
+                spdc_concat_colors_and_flush(this, FALSE);
+                this->sketch_n = 0;
+                this->sa = nullptr;
+                this->ea = nullptr;
+                this->green_anchor.reset();
+                this->_state = SP_PENCIL_CONTEXT_IDLE;
+                this->discard_delayed_snap_event();
+                _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Finishing freehand sketch"));
+                ret = true;
+            }
+            break;
+        default:
+            break;
+    }
+    return ret;
+}
+
+/**
+ * Reset points and set new starting point.
+ */
+void PencilTool::_setStartpoint(Geom::Point const &p) {
+    this->_npoints = 0;
+    this->red_curve_is_valid = false;
+    if (in_svg_plane(p)) {
+        this->p[this->_npoints++] = p;
+    }
+}
+
+/**
+ * Change moving endpoint position.
+ * <ul>
+ * <li>Ctrl constrains to moving to H/V direction, snapping in given direction.
+ * <li>Otherwise we snap freely to whatever attractors are available.
+ * </ul>
+ *
+ * Number of points is (re)set to 2 always, 2nd point is modified.
+ * We change RED curve.
+ */
+void PencilTool::_setEndpoint(Geom::Point const &p) {
+    if (this->_npoints == 0) {
+        return;
+        /* May occur if first point wasn't in SVG plane (e.g. weird w2d transform, perhaps from bad
+         * zoom setting).
+         */
+    }
+    g_return_if_fail( this->_npoints > 0 );
+
+    this->red_curve->reset();
+    if ( ( p == this->p[0] )
+         || !in_svg_plane(p) )
+    {
+        this->_npoints = 1;
+    } else {
+        this->p[1] = p;
+        this->_npoints = 2;
+
+        this->red_curve->moveto(this->p[0]);
+        this->red_curve->lineto(this->p[1]);
+        this->red_curve_is_valid = true;
+        if (!tablet_enabled) {
+            red_bpath->set_bpath(red_curve.get());
+        }
+    }
+}
+
+/**
+ * Finalize addline.
+ *
+ * \todo
+ * fixme: I'd like remove red reset from concat colors (lauris).
+ * Still not sure, how it will make most sense.
+ */
+void PencilTool::_finishEndpoint() {
+    if (this->red_curve->is_unset() || 
+        this->red_curve->first_point() == this->red_curve->second_point())
+    {
+        this->red_curve->reset();
+        if (!tablet_enabled) {
+            red_bpath->set_bpath(nullptr);
+        }
+    } else {
+        /* Write curves to object. */
+        spdc_concat_colors_and_flush(this, FALSE);
+        this->sa = nullptr;
+        this->ea = nullptr;
+    }
+}
+
+static inline double square(double const x) { return x * x; }
+
+
+
+void PencilTool::addPowerStrokePencil()
+{
+    {
+        SPDocument *document = _desktop->doc();
+        if (!document) {
+            return;
+        }
+        using namespace Inkscape::LivePathEffect;
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        double tol = prefs->getDoubleLimited("/tools/freehand/pencil/base-simplify", 25.0, 0.0, 100.0) * 0.4;
+        double tolerance_sq = 0.02 * square(_desktop->w2d().descrim() * tol) * exp(0.2 * tol - 2);
+        int n_points = this->ps.size();
+        // worst case gives us a segment per point
+        int max_segs = 4 * n_points;
+        std::vector<Geom::Point> b(max_segs);
+        auto curvepressure = std::make_unique<SPCurve>();
+        int const n_segs = Geom::bezier_fit_cubic_r(b.data(), this->ps.data(), n_points, tolerance_sq, max_segs);
+        if (n_segs > 0) {
+            /* Fit and draw and reset state */
+            curvepressure->moveto(b[0]);
+            for (int c = 0; c < n_segs; c++) {
+                curvepressure->curveto(b[4 * c + 1], b[4 * c + 2], b[4 * c + 3]);
+            }
+        }
+        Geom::Affine transform_coordinate = currentLayer()->i2dt_affine().inverse();
+        curvepressure->transform(transform_coordinate);
+        Geom::Path path = curvepressure->get_pathvector()[0];
+
+        if (!path.empty()) {
+            Inkscape::XML::Document *xml_doc = document->getReprDoc();
+            Inkscape::XML::Node *pp = nullptr;
+            pp = xml_doc->createElement("svg:path");
+            pp->setAttribute("d", sp_svg_write_path(path));
+            pp->setAttribute("id", "power_stroke_preview");
+            Inkscape::GC::release(pp);
+
+            SPShape *powerpreview = SP_SHAPE(currentLayer()->appendChildRepr(pp));
+            SPLPEItem *lpeitem = dynamic_cast<SPLPEItem *>(powerpreview);
+            if (!lpeitem) {
+                return;
+            }
+            DocumentUndo::ScopedInsensitive tmp(document);
+            tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 0.0, 100.0) + 30;
+            if (tol > 30) {
+                tol = tol / (130.0 * (132.0 - tol));
+                Inkscape::SVGOStringStream threshold;
+                threshold << tol;
+                Effect::createAndApply(SIMPLIFY, document, lpeitem);
+                Effect *lpe = lpeitem->getCurrentLPE();
+                Inkscape::LivePathEffect::LPESimplify *simplify =
+                    static_cast<Inkscape::LivePathEffect::LPESimplify *>(lpe);
+                if (simplify) {
+                    sp_lpe_item_enable_path_effects(lpeitem, false);
+                    Glib::ustring pref_path = "/live_effects/simplify/smooth_angles";
+                    bool valid = prefs->getEntry(pref_path).isValid();
+                    if (!valid) {
+                        lpe->getRepr()->setAttribute("smooth_angles", "0");
+                    }
+                    pref_path = "/live_effects/simplify/helper_size";
+                    valid = prefs->getEntry(pref_path).isValid();
+                    if (!valid) {
+                        lpe->getRepr()->setAttribute("helper_size", "0");
+                    }
+                    pref_path = "/live_effects/simplify/step";
+                    valid = prefs->getEntry(pref_path).isValid();
+                    if (!valid) {
+                        lpe->getRepr()->setAttribute("step", "1");
+                    }
+                    lpe->getRepr()->setAttribute("threshold", threshold.str());
+                    lpe->getRepr()->setAttribute("simplify_individual_paths", "false");
+                    lpe->getRepr()->setAttribute("simplify_just_coalesce", "false");
+                    sp_lpe_item_enable_path_effects(lpeitem, true);
+                }
+                sp_lpe_item_update_patheffect(lpeitem, false, true);
+                SPCurve const *curvepressure = powerpreview->curve();
+                if (curvepressure->is_empty()) {
+                    return;
+                }
+                path = curvepressure->get_pathvector()[0];
+            }
+            powerStrokeInterpolate(path);
+            Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+            Glib::ustring pref_path_pp = "/live_effects/powerstroke/powerpencil";
+            prefs->setBool(pref_path_pp, true);
+            Effect::createAndApply(POWERSTROKE, document, lpeitem);
+            Effect *lpe = lpeitem->getCurrentLPE();
+            Inkscape::LivePathEffect::LPEPowerStroke *pspreview = static_cast<LPEPowerStroke *>(lpe);
+            if (pspreview) {
+                sp_lpe_item_enable_path_effects(lpeitem, false);
+                Glib::ustring pref_path = "/live_effects/powerstroke/interpolator_type";
+                bool valid = prefs->getEntry(pref_path).isValid();
+                if (!valid) {
+                    pspreview->getRepr()->setAttribute("interpolator_type", "CentripetalCatmullRom");
+                }
+                pref_path = "/live_effects/powerstroke/linejoin_type";
+                valid = prefs->getEntry(pref_path).isValid();
+                if (!valid) {
+                    pspreview->getRepr()->setAttribute("linejoin_type", "spiro");
+                }
+                pref_path = "/live_effects/powerstroke/interpolator_beta";
+                valid = prefs->getEntry(pref_path).isValid();
+                if (!valid) {
+                    pspreview->getRepr()->setAttribute("interpolator_beta", "0.75");
+                }
+                gint cap = prefs->getInt("/live_effects/powerstroke/powerpencilcap", 2);
+                pspreview->getRepr()->setAttribute("start_linecap_type", LineCapTypeConverter.get_key(cap));
+                pspreview->getRepr()->setAttribute("end_linecap_type", LineCapTypeConverter.get_key(cap));
+                pspreview->getRepr()->setAttribute("sort_points", "true");
+                pspreview->getRepr()->setAttribute("not_jump", "true");
+                pspreview->offset_points.param_set_and_write_new_value(this->points);
+                sp_lpe_item_enable_path_effects(lpeitem, true);
+                sp_lpe_item_update_patheffect(lpeitem, false, true);
+                pp->setAttribute("style", "fill:#888888;opacity:1;fill-rule:nonzero;stroke:none;");
+            }
+            prefs->setBool(pref_path_pp, false);
+        }
+    }
+}
+
+/**
+ * Add a virtual point to the future pencil path.
+ *
+ * @param p the point to add.
+ * @param state event state
+ * @param last the point is the last of the user stroke.
+ */
+void PencilTool::_addFreehandPoint(Geom::Point const &p, guint /*state*/, bool last)
+{
+    g_assert( this->_npoints > 0 );
+    g_return_if_fail(unsigned(this->_npoints) < G_N_ELEMENTS(this->p));
+
+    double distance = 0;
+    if ( ( p != this->p[ this->_npoints - 1 ] )
+         && in_svg_plane(p) )
+    {
+        this->p[this->_npoints++] = p;
+        this->_fitAndSplit();
+        if (tablet_enabled) {
+            distance = Geom::distance(p, this->ps.back()) + this->_wps.back()[Geom::X];
+        }
+        this->ps.push_back(p);
+    }
+    if (tablet_enabled && in_svg_plane(p)) {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        double min = prefs->getIntLimited("/tools/freehand/pencil/minpressure",  0, 0, 100) / 100.0;
+        double max = prefs->getIntLimited("/tools/freehand/pencil/maxpressure", 30, 0, 100) / 100.0;
+        if (min > max) {
+            min = max;
+        }
+        double dezoomify_factor = 0.05 * 1000 / _desktop->current_zoom();
+        double const pressure_shrunk = pressure * (max - min) + min; // C++20 -> use std::lerp()
+        double pressure_computed = std::abs(pressure_shrunk * dezoomify_factor);
+        double pressure_computed_scaled = std::abs(pressure_computed * _desktop->getDocument()->getDocumentScale().inverse()[Geom::X]);
+        if (p != this->p[this->_npoints - 1]) {
+            this->_wps.emplace_back(distance, pressure_computed_scaled);
+        }
+        if (pressure_computed) {
+            Geom::Circle pressure_dot(p, pressure_computed);
+            Geom::Piecewise<Geom::D2<Geom::SBasis>> pressure_piecewise;
+            pressure_piecewise.push_cut(0);
+            pressure_piecewise.push(pressure_dot.toSBasis(), 1);
+            Geom::PathVector pressure_path = Geom::path_from_piecewise(pressure_piecewise, 0.1);
+            Geom::PathVector previous_presure = this->_pressure_curve->get_pathvector();
+            if (!pressure_path.empty() && !previous_presure.empty()) {
+                pressure_path = sp_pathvector_boolop(pressure_path, previous_presure, bool_op_union, fill_nonZero, fill_nonZero);
+            }
+            this->_pressure_curve->set_pathvector(pressure_path);
+            red_bpath->set_bpath(_pressure_curve.get());
+        }
+        if (last) {
+            this->addPowerStrokePencil();
+        }
+    }
+}
+
+void PencilTool::powerStrokeInterpolate(Geom::Path const path)
+{
+    size_t ps_size = this->ps.size();
+    if ( ps_size <= 1 ) {
+        return;
+    }
+
+    using Geom::X;
+    using Geom::Y;
+    gint path_size = path.size();
+    std::vector<Geom::Point> tmp_points;
+    Geom::Point previous = Geom::Point(Geom::infinity(), 0);
+    bool increase = false;
+    size_t i = 0;
+    double dezoomify_factor = 0.05 * 1000 / _desktop->current_zoom();
+    double limit = 6 * dezoomify_factor;
+    double max =
+        std::max(this->_wps.back()[Geom::X] - (this->_wps.back()[Geom::X] / 10), this->_wps.back()[Geom::X] - limit);
+    double min = std::min(this->_wps.back()[Geom::X] / 10, limit);
+    double original_lenght = this->_wps.back()[Geom::X];
+    double max10 = 0;
+    double min10 = 0;
+    for (auto wps : this->_wps) {
+        i++;
+        Geom::Coord pressure = wps[Geom::Y];
+        max10 = max10  > pressure ? max10 : pressure;
+        min10 = min10 <= pressure ? min10 : pressure;
+        if (!original_lenght || wps[Geom::X] > max) {
+            break;
+        }
+        if (wps[Geom::Y] == 0 || wps[Geom::X] < min) {
+            continue;
+        }
+        if (previous[Geom::Y] < (max10 + min10) / 2.0) {
+            if (increase && tmp_points.size() > 1) {
+                tmp_points.pop_back();
+            }
+            wps[Geom::Y] = max10;
+            tmp_points.push_back(wps);
+            increase = true;
+        } else {
+            if (!increase && tmp_points.size() > 1) {
+                tmp_points.pop_back();
+            }
+            wps[Geom::Y] = min10;
+            tmp_points.push_back(wps);
+            increase = false;
+        }
+        previous = wps;
+        max10 = 0;
+        min10 = 999999999;
+    }
+    this->points.clear();
+    double prev_pressure = 0;
+    for (auto point : tmp_points) {
+        point[Geom::X] /= (double)original_lenght;
+        point[Geom::X] *= path_size;
+        if (std::abs(point[Geom::Y] - prev_pressure) > point[Geom::Y] / 10.0) {
+            this->points.push_back(point);
+            prev_pressure = point[Geom::Y];
+        }
+    }
+    if (points.empty() && !_wps.empty()) {
+        // Synthesize a pressure data point based on the average pressure
+        double average_pressure = std::accumulate(_wps.begin(), _wps.end(), 0.0,
+            [](double const &sum_so_far, Geom::Point const &point) -> double {
+                return sum_so_far + point[Geom::Y];
+        }) / (double)_wps.size();
+        points.emplace_back(0.5 * path.size(), /* place halfway along the path */
+                            2.0 * average_pressure /* 2.0 - for correct average thickness of a kite */);
+    }
+}
+
+void PencilTool::_interpolate() {
+    size_t ps_size = this->ps.size();
+    if ( ps_size <= 1 ) {
+        return;
+    }
+    using Geom::X;
+    using Geom::Y;
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    double tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 0.0, 100.0) * 0.4;
+    bool simplify = prefs->getInt("/tools/freehand/pencil/simplify", 0);
+    if(simplify){
+        double tol2 = prefs->getDoubleLimited("/tools/freehand/pencil/base-simplify", 25.0, 0.0, 100.0) * 0.4;
+        tol = std::min(tol,tol2);
+    }
+    this->green_curve->reset();
+    this->red_curve->reset();
+    this->red_curve_is_valid = false;
+
+    double tolerance_sq = 0.02 * square(_desktop->w2d().descrim() * tol) * exp(0.2 * tol - 2);
+
+    g_assert(is_zero(this->_req_tangent) || is_unit_vector(this->_req_tangent));
+
+    int n_points = this->ps.size();
+
+    // worst case gives us a segment per point
+    int max_segs = 4 * n_points;
+
+    std::vector<Geom::Point> b(max_segs);
+    int const n_segs = Geom::bezier_fit_cubic_r(b.data(), this->ps.data(), n_points, tolerance_sq, max_segs);
+    if (n_segs > 0) {
+        /* Fit and draw and reset state */
+        this->green_curve->moveto(b[0]);
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        guint mode = prefs->getInt("/tools/freehand/pencil/freehand-mode", 0);
+        for (int c = 0; c < n_segs; c++) {
+            // if we are in BSpline we modify the trace to create adhoc nodes 
+            if (mode == 2) {
+                Geom::Point point_at1 = b[4 * c + 0] + (1./3) * (b[4 * c + 3] - b[4 * c + 0]);
+                point_at1 = Geom::Point(point_at1[X] + HANDLE_CUBIC_GAP, point_at1[Y] + HANDLE_CUBIC_GAP);
+                Geom::Point point_at2 = b[4 * c + 3] + (1./3) * (b[4 * c + 0] - b[4 * c + 3]);
+                point_at2 = Geom::Point(point_at2[X] + HANDLE_CUBIC_GAP, point_at2[Y] + HANDLE_CUBIC_GAP);
+                this->green_curve->curveto(point_at1,point_at2,b[4*c+3]);
+            } else {
+                if (!tablet_enabled || c != n_segs - 1) {
+                    this->green_curve->curveto(b[4 * c + 1], b[4 * c + 2], b[4 * c + 3]);
+                } else {
+                    std::optional<Geom::Point> finalp = this->green_curve->last_point();
+                    if (this->green_curve->nodes_in_path() > 4 && Geom::are_near(*finalp, b[4 * c + 3], 10.0)) {
+                        this->green_curve->backspace();
+                        this->green_curve->curveto(*finalp, b[4 * c + 3], b[4 * c + 3]);
+                    } else {
+                        this->green_curve->curveto(b[4 * c + 1], b[4 * c + 3], b[4 * c + 3]);
+                    }
+                }
+            }
+        }
+        if (!tablet_enabled) {
+            red_bpath->set_bpath(green_curve.get());
+        }
+
+        /* Fit and draw and copy last point */
+        g_assert(!this->green_curve->is_empty());
+
+        /* Set up direction of next curve. */
+        {
+            Geom::Curve const * last_seg = this->green_curve->last_segment();
+            g_assert( last_seg );      // Relevance: validity of (*last_seg)
+            this->p[0] = last_seg->finalPoint();
+            this->_npoints = 1;
+            Geom::Curve *last_seg_reverse = last_seg->reverse();
+            Geom::Point const req_vec( -last_seg_reverse->unitTangentAt(0) );
+            delete last_seg_reverse;
+            this->_req_tangent = ( ( Geom::is_zero(req_vec) || !in_svg_plane(req_vec) )
+                                ? Geom::Point(0, 0)
+                                : Geom::unit_vector(req_vec) );
+        }
+    }
+}
+
+
+/* interpolates the sketched curve and tweaks the current sketch interpolation*/
+void PencilTool::_sketchInterpolate() {
+    if ( this->ps.size() <= 1 ) {
+        return;
+    }
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    double tol = prefs->getDoubleLimited("/tools/freehand/pencil/tolerance", 10.0, 1.0, 100.0) * 0.4;
+    bool simplify = prefs->getInt("/tools/freehand/pencil/simplify", 0);
+    if(simplify){
+        double tol2 = prefs->getDoubleLimited("/tools/freehand/pencil/base-simplify", 25.0, 1.0, 100.0) * 0.4;
+        tol = std::min(tol,tol2);
+    }
+    double tolerance_sq = 0.02 * square(_desktop->w2d().descrim() * tol) * exp(0.2 * tol - 2);
+
+    bool average_all_sketches = prefs->getBool("/tools/freehand/pencil/average_all_sketches", true);
+
+    g_assert(is_zero(this->_req_tangent) || is_unit_vector(this->_req_tangent));
+
+    this->red_curve->reset();
+    this->red_curve_is_valid = false;
+
+    int n_points = this->ps.size();
+
+    // worst case gives us a segment per point
+    int max_segs = 4 * n_points;
+
+    std::vector<Geom::Point> b(max_segs);
+
+    int const n_segs = Geom::bezier_fit_cubic_r(b.data(), this->ps.data(), n_points, tolerance_sq, max_segs);
+
+    if (n_segs > 0) {
+        Geom::Path fit(b[0]);
+
+        for (int c = 0; c < n_segs; c++) {
+            fit.appendNew<Geom::CubicBezier>(b[4 * c + 1], b[4 * c + 2], b[4 * c + 3]);
+        }
+
+        Geom::Piecewise<Geom::D2<Geom::SBasis> > fit_pwd2 = fit.toPwSb();
+
+        if (this->sketch_n > 0) {
+            double t;
+
+            if (average_all_sketches) {
+                // Average = (sum of all) / n
+                //         = (sum of all + new one) / n+1
+                //         = ((old average)*n + new one) / n+1
+                t = this->sketch_n / (this->sketch_n + 1.);
+            } else {
+                t = 0.5;
+            }
+
+            this->sketch_interpolation = Geom::lerp(t, fit_pwd2, this->sketch_interpolation);
+
+            // simplify path, to eliminate small segments
+            Path path;
+            path.LoadPathVector(Geom::path_from_piecewise(this->sketch_interpolation, 0.01));
+            path.Simplify(0.5);
+
+            Geom::PathVector pathv = path.MakePathVector();
+            this->sketch_interpolation = pathv[0].toPwSb();
+        } else {
+            this->sketch_interpolation = fit_pwd2;
+        }
+
+        this->sketch_n++;
+
+        this->green_curve->reset();
+        this->green_curve->set_pathvector(Geom::path_from_piecewise(this->sketch_interpolation, 0.01));
+        if (!tablet_enabled) {
+            red_bpath->set_bpath(green_curve.get());
+        }
+        /* Fit and draw and copy last point */
+        g_assert(!this->green_curve->is_empty());
+
+        /* Set up direction of next curve. */
+        {
+            Geom::Curve const * last_seg = this->green_curve->last_segment();
+            g_assert( last_seg );      // Relevance: validity of (*last_seg)
+            this->p[0] = last_seg->finalPoint();
+            this->_npoints = 1;
+            Geom::Curve *last_seg_reverse = last_seg->reverse();
+            Geom::Point const req_vec( -last_seg_reverse->unitTangentAt(0) );
+            delete last_seg_reverse;
+            this->_req_tangent = ( ( Geom::is_zero(req_vec) || !in_svg_plane(req_vec) )
+                                ? Geom::Point(0, 0)
+                                : Geom::unit_vector(req_vec) );
+        }
+    }
+
+    this->ps.clear();
+    this->points.clear();
+    this->_wps.clear();
+}
+
+void PencilTool::_fitAndSplit() {
+    g_assert( this->_npoints > 1 );
+
+    double const tolerance_sq = 0;
+
+    Geom::Point b[4];
+    g_assert(is_zero(this->_req_tangent)
+             || is_unit_vector(this->_req_tangent));
+    Geom::Point const tHatEnd(0, 0);
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    int const n_segs = Geom::bezier_fit_cubic_full(b, nullptr, this->p, this->_npoints,
+                                                this->_req_tangent, tHatEnd,
+                                                tolerance_sq, 1);
+    if ( n_segs > 0
+         && unsigned(this->_npoints) < G_N_ELEMENTS(this->p) )
+    {
+        /* Fit and draw and reset state */
+
+        this->red_curve->reset();
+        this->red_curve->moveto(b[0]);
+        using Geom::X;
+        using Geom::Y;
+            // if we are in BSpline we modify the trace to create adhoc nodes
+        guint mode = prefs->getInt("/tools/freehand/pencil/freehand-mode", 0);
+        if(mode == 2){
+            Geom::Point point_at1 = b[0] + (1./3)*(b[3] - b[0]);
+            point_at1 = Geom::Point(point_at1[X] + HANDLE_CUBIC_GAP, point_at1[Y] + HANDLE_CUBIC_GAP);
+            Geom::Point point_at2 = b[3] + (1./3)*(b[0] - b[3]);
+            point_at2 = Geom::Point(point_at2[X] + HANDLE_CUBIC_GAP, point_at2[Y] + HANDLE_CUBIC_GAP);
+            this->red_curve->curveto(point_at1,point_at2,b[3]);
+        }else{
+            this->red_curve->curveto(b[1], b[2], b[3]);
+        }
+        if (!tablet_enabled) {
+            red_bpath->set_bpath(red_curve.get());
+        }
+        this->red_curve_is_valid = true;
+    } else {
+        /* Fit and draw and copy last point */
+
+        g_assert(!this->red_curve->is_empty());
+
+        /* Set up direction of next curve. */
+        {
+            Geom::Curve const * last_seg = this->red_curve->last_segment();
+            g_assert( last_seg );      // Relevance: validity of (*last_seg)
+            this->p[0] = last_seg->finalPoint();
+            this->_npoints = 1;
+            Geom::Curve *last_seg_reverse = last_seg->reverse();
+            Geom::Point const req_vec( -last_seg_reverse->unitTangentAt(0) );
+            delete last_seg_reverse;
+            this->_req_tangent = ( ( Geom::is_zero(req_vec) || !in_svg_plane(req_vec) )
+                                ? Geom::Point(0, 0)
+                                : Geom::unit_vector(req_vec) );
+        }
+
+        green_curve->append_continuous(*red_curve);
+        auto curve = this->red_curve->copy();
+
+        /// \todo fixme:
+
+        auto layer = _desktop->layerManager().currentLayer();
+        this->highlight_color = layer->highlight_color();
+        if((unsigned int)prefs->getInt("/tools/nodes/highlight_color", 0xff0000ff) == this->highlight_color){
+            this->green_color = 0x00ff007f;
+        } else {
+            this->green_color = this->highlight_color;
+        }
+
+        auto cshape = new Inkscape::CanvasItemBpath(_desktop->getCanvasSketch(), curve.get(), true);
+        cshape->set_stroke(green_color);
+        cshape->set_fill(0x0, SP_WIND_RULE_NONZERO);
+
+        this->green_bpaths.push_back(cshape);
+
+        this->red_curve_is_valid = false;
+    }
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/pencil-tool.h b/src/ui/tools/pencil-tool.h
new file mode 100644
index 0000000..e9443ea
--- /dev/null
+++ b/src/ui/tools/pencil-tool.h
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/** \file
+ * PencilTool: a context for pencil tool events
+ *//*
+ * Authors: see git history
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+#ifndef SEEN_PENCIL_CONTEXT_H
+#define SEEN_PENCIL_CONTEXT_H
+
+
+#include "ui/tools/freehand-base.h"
+
+#include <2geom/piecewise.h>
+#include <2geom/d2.h>
+#include <2geom/sbasis.h>
+#include <2geom/pathvector.h>
+// #include <future>
+
+#include <memory>
+
+class SPShape;
+
+#define DDC_MIN_PRESSURE      0.0
+#define DDC_MAX_PRESSURE      1.0
+#define DDC_DEFAULT_PRESSURE  1.0
+#define SP_PENCIL_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::PencilTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_PENCIL_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::PencilTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum PencilState {
+    SP_PENCIL_CONTEXT_IDLE,
+    SP_PENCIL_CONTEXT_ADDLINE,
+    SP_PENCIL_CONTEXT_FREEHAND,
+    SP_PENCIL_CONTEXT_SKETCH
+};
+
+/**
+ * PencilTool: a context for pencil tool events
+ */
+class PencilTool : public FreehandBase {
+public:
+    PencilTool(SPDesktop *desktop);
+    ~PencilTool() override;
+
+    Geom::Point p[16];
+    std::vector<Geom::Point> ps;
+    std::vector<Geom::Point> points;
+    void addPowerStrokePencil();
+    void powerStrokeInterpolate(Geom::Path const path);
+    Geom::Piecewise<Geom::D2<Geom::SBasis> > sketch_interpolation; // the current proposal from the sketched paths
+    unsigned sketch_n; // number of sketches done
+
+protected:
+    bool root_handler(GdkEvent* event) override;
+private:
+    bool _handleButtonPress(GdkEventButton const &bevent);
+    bool _handleMotionNotify(GdkEventMotion const &mevent);
+    bool _handleButtonRelease(GdkEventButton const &revent);
+    bool _handleKeyPress(GdkEventKey const &event);
+    bool _handleKeyRelease(GdkEventKey const &event);
+    void _setStartpoint(Geom::Point const &p);
+    void _setEndpoint(Geom::Point const &p);
+    void _finishEndpoint();
+    void _addFreehandPoint(Geom::Point const &p, guint state, bool last);
+    void _fitAndSplit();
+    void _interpolate();
+    void _sketchInterpolate();
+    void _extinput(GdkEvent *event);
+    void _cancel();
+    void _endpointSnap(Geom::Point &p, guint const state);
+    std::vector<Geom::Point> _wps;
+    std::unique_ptr<SPCurve> _pressure_curve;
+    Geom::Point _req_tangent;
+    bool _is_drawing;
+    PencilState _state;
+    gint _npoints;
+    // std::future<bool> future;
+};
+
+}
+}
+}
+
+#endif /* !SEEN_PENCIL_CONTEXT_H */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/rect-tool.cpp b/src/ui/tools/rect-tool.cpp
new file mode 100644
index 0000000..cbbbbab
--- /dev/null
+++ b/src/ui/tools/rect-tool.cpp
@@ -0,0 +1,465 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Rectangle drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
+ * Copyright (C) 2000-2005 authors
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "include/macros.h"
+#include "message-context.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+
+#include "object/sp-rect.h"
+#include "object/sp-namedview.h"
+
+#include "ui/icon-names.h"
+#include "ui/shape-editor.h"
+#include "ui/tools/rect-tool.h"
+
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+RectTool::RectTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/shapes/rect", "rect.svg")
+    , rect(nullptr)
+    , rx(0)
+    , ry(0)
+{
+    this->shape_editor = new ShapeEditor(desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    this->sel_changed_connection.disconnect();
+    this->sel_changed_connection = desktop->getSelection()->connectChanged(
+    	sigc::mem_fun(this, &RectTool::selection_changed)
+    );
+
+    sp_event_context_read(this, "rx");
+    sp_event_context_read(this, "ry");
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/shapes/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/shapes/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+RectTool::~RectTool() {
+    ungrabCanvasEvents();
+
+    this->finishItem();
+    this->enableGrDrag(false);
+
+    this->sel_changed_connection.disconnect();
+
+    delete this->shape_editor;
+    this->shape_editor = nullptr;
+
+    /* fixme: This is necessary because we do not grab */
+    if (this->rect) {
+        this->finishItem();
+    }
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ */
+void RectTool::selection_changed(Inkscape::Selection* selection) {
+    this->shape_editor->unset_item();
+    this->shape_editor->set_item(selection->singleItem());
+}
+
+void RectTool::set(const Inkscape::Preferences::Entry& val) {
+    /* fixme: Proper error handling for non-numeric data.  Use a locale-independent function like
+     * g_ascii_strtod (or a thin wrapper that does the right thing for invalid values inf/nan). */
+    Glib::ustring name = val.getEntryName();
+    
+    if ( name == "rx" ) {
+        this->rx = val.getDoubleLimited(); // prevents NaN and +/-Inf from messing up
+    } else if ( name == "ry" ) {
+        this->ry = val.getDoubleLimited();
+    }
+}
+
+bool RectTool::item_handler(SPItem* item, GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if ( event->button.button == 1) {
+            this->setup_for_drag_start(event);
+        }
+        break;
+        // motion and release are always on root (why?)
+    default:
+        break;
+    }
+
+   	ret = ToolBase::item_handler(item, event);
+
+    return ret;
+}
+
+bool RectTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    gint ret = FALSE;
+    
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if (event->button.button == 1) {
+            Geom::Point const button_w(event->button.x, event->button.y);
+
+            // save drag origin
+            this->xp = (gint) button_w[Geom::X];
+            this->yp = (gint) button_w[Geom::Y];
+            this->within_tolerance = true;
+
+            // remember clicked item, disregarding groups, honoring Alt
+            this->item_to_select = sp_event_context_find_item (_desktop, button_w, event->button.state & GDK_MOD1_MASK, TRUE);
+
+            dragging = true;
+
+            /* Position center */
+            Geom::Point button_dt(_desktop->w2d(button_w));
+            this->center = button_dt;
+
+            /* Snap center */
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop);
+            m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            m.unSetup();
+            this->center = button_dt;
+
+            grabCanvasEvents();
+            ret = TRUE;
+        }
+        break;
+    case GDK_MOTION_NOTIFY:
+        if ( dragging
+             && (event->motion.state & GDK_BUTTON1_MASK))
+        {
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to draw, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            this->within_tolerance = false;
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+            this->drag(motion_dt, event->motion.state); // this will also handle the snapping
+            gobble_motion_events(GDK_BUTTON1_MASK);
+            ret = TRUE;
+        } else if (!this->sp_event_context_knot_mouseover()) {
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop);
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+            m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
+            m.unSetup();
+        }
+        break;
+    case GDK_BUTTON_RELEASE:
+        this->xp = this->yp = 0;
+        if (event->button.button == 1) {
+            dragging = false;
+            this->discard_delayed_snap_event();
+
+            if (!this->within_tolerance) {
+                // we've been dragging, finish the rect
+                this->finishItem();
+            } else if (this->item_to_select) {
+                // no dragging, select clicked item if any
+                if (event->button.state & GDK_SHIFT_MASK) {
+                    selection->toggle(this->item_to_select);
+                } else {
+                    selection->set(this->item_to_select);
+                }
+            } else {
+                // click in an empty space
+                selection->clear();
+            }
+
+            this->item_to_select = nullptr;
+            ret = TRUE;
+            ungrabCanvasEvents();
+        }
+        break;
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+        case GDK_KEY_Meta_R:
+            if (!dragging){
+                sp_event_show_modifier_tip (this->defaultMessageContext(), event,
+                                            _("<b>Ctrl</b>: make square or integer-ratio rect, lock a rounded corner circular"),
+                                            _("<b>Shift</b>: draw around the starting point"),
+                                            nullptr);
+            }
+            break;
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (MOD__ALT_ONLY(event)) {
+                _desktop->setToolboxFocusTo("rect-width");
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_g:
+        case GDK_KEY_G:
+            if (MOD__SHIFT_ONLY(event)) {
+                _desktop->selection->toGuides();
+                ret = true;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+            if (dragging) {
+                dragging = false;
+                this->discard_delayed_snap_event();
+                // if drawing, cancel, otherwise pass it up for deselecting
+                this->cancel();
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_space:
+            if (dragging) {
+                ungrabCanvasEvents();
+                dragging = false;
+                this->discard_delayed_snap_event();
+
+                if (!this->within_tolerance) {
+                    // we've been dragging, finish the rect
+                    this->finishItem();
+                }
+                // do not return true, so that space would work switching to selector
+            }
+            break;
+
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+        case GDK_KEY_BackSpace:
+            ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+            break;
+
+        default:
+            break;
+        }
+        break;
+    case GDK_KEY_RELEASE:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+        case GDK_KEY_Meta_R:
+            this->defaultMessageContext()->clear();
+            break;
+        default:
+            break;
+        }
+        break;
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void RectTool::drag(Geom::Point const pt, guint state) {
+    if (!this->rect) {
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return;
+        }
+
+        // Create object
+        Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:rect");
+
+        // Set style
+        sp_desktop_apply_style_tool(_desktop, repr, "/tools/shapes/rect", false);
+
+        this->rect = SP_RECT(currentLayer()->appendChildRepr(repr));
+        Inkscape::GC::release(repr);
+
+        this->rect->transform = currentLayer()->i2doc_affine().inverse();
+        this->rect->updateRepr();
+    }
+
+    Geom::Rect const r = Inkscape::snap_rectangular_box(_desktop, this->rect, pt, this->center, state);
+
+    this->rect->setPosition(r.min()[Geom::X], r.min()[Geom::Y], r.dimensions()[Geom::X], r.dimensions()[Geom::Y]);
+
+    if (this->rx != 0.0) {
+    	this->rect->setRx(true, this->rx);
+    }
+
+    if (this->ry != 0.0) {
+        if (this->rx == 0.0)
+        	this->rect->setRy(true, CLAMP(this->ry, 0, MIN(r.dimensions()[Geom::X], r.dimensions()[Geom::Y])/2));
+        else
+        	this->rect->setRy(true, CLAMP(this->ry, 0, r.dimensions()[Geom::Y]));
+    }
+
+    // status text
+    double rdimx = r.dimensions()[Geom::X];
+    double rdimy = r.dimensions()[Geom::Y];
+
+    Inkscape::Util::Quantity rdimx_q = Inkscape::Util::Quantity(rdimx, "px");
+    Inkscape::Util::Quantity rdimy_q = Inkscape::Util::Quantity(rdimy, "px");
+    Glib::ustring xs = rdimx_q.string(_desktop->namedview->display_units);
+    Glib::ustring ys = rdimy_q.string(_desktop->namedview->display_units);
+
+    if (state & GDK_CONTROL_MASK) {
+        int ratio_x, ratio_y;
+        bool is_golden_ratio = false;
+
+        if (fabs (rdimx) > fabs (rdimy)) {
+            if (fabs(rdimx / rdimy - goldenratio) < 1e-6) {
+                is_golden_ratio = true;
+            }
+
+            ratio_x = (int) rint (rdimx / rdimy);
+            ratio_y = 1;
+        } else {
+            if (fabs(rdimy / rdimx - goldenratio) < 1e-6) {
+                is_golden_ratio = true;
+            }
+
+            ratio_x = 1;
+            ratio_y = (int) rint (rdimy / rdimx);
+        }
+
+        if (!is_golden_ratio) {
+            this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                    _("<b>Rectangle</b>: %s &#215; %s (constrained to ratio %d:%d); with <b>Shift</b> to draw around the starting point"),
+                    xs.c_str(), ys.c_str(), ratio_x, ratio_y);
+        } else {
+            if (ratio_y == 1) {
+                this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                        _("<b>Rectangle</b>: %s &#215; %s (constrained to golden ratio 1.618 : 1); with <b>Shift</b> to draw around the starting point"),
+                        xs.c_str(), ys.c_str());
+            } else {
+                this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                        _("<b>Rectangle</b>: %s &#215; %s (constrained to golden ratio 1 : 1.618); with <b>Shift</b> to draw around the starting point"),
+                        xs.c_str(), ys.c_str());
+            }
+        }
+    } else {
+        this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                _("<b>Rectangle</b>: %s &#215; %s; with <b>Ctrl</b> to make square, integer-ratio, or golden-ratio rectangle; with <b>Shift</b> to draw around the starting point"),
+                xs.c_str(), ys.c_str());
+    }
+}
+
+void RectTool::finishItem() {
+    this->message_context->clear();
+
+    if (this->rect != nullptr) {
+        if (this->rect->width.computed == 0 || this->rect->height.computed == 0) {
+            this->cancel(); // Don't allow the creating of zero sized rectangle, for example when the start and and point snap to the snap grid point
+            return;
+        }
+
+        this->rect->updateRepr();
+        this->rect->doWriteTransform(this->rect->transform, nullptr, true);
+
+        _desktop->getSelection()->set(this->rect);
+
+        DocumentUndo::done(_desktop->getDocument(), _("Create rectangle"), INKSCAPE_ICON("draw-rectangle"));
+
+        this->rect = nullptr;
+    }
+}
+
+void RectTool::cancel(){
+    _desktop->getSelection()->clear();
+    ungrabCanvasEvents();
+
+    if (this->rect != nullptr) {
+        this->rect->deleteObject();
+        this->rect = nullptr;
+    }
+
+    this->within_tolerance = false;
+    this->xp = 0;
+    this->yp = 0;
+    this->item_to_select = nullptr;
+
+    DocumentUndo::cancel(_desktop->getDocument());
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/rect-tool.h b/src/ui/tools/rect-tool.h
new file mode 100644
index 0000000..79d1a8a
--- /dev/null
+++ b/src/ui/tools/rect-tool.h
@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_RECT_CONTEXT_H__
+#define __SP_RECT_CONTEXT_H__
+
+/*
+ * Rectangle drawing context
+ *
+ * Author:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2000 Lauris Kaplinski
+ * Copyright (C) 2000-2001 Ximian, Inc.
+ * Copyright (C) 2002 Lauris Kaplinski
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+#include <2geom/point.h>
+#include "ui/tools/tool-base.h"
+
+class SPRect;
+
+namespace Inkscape {
+
+class Selection;
+
+namespace UI {
+namespace Tools {
+
+class RectTool : public ToolBase {
+public:
+    RectTool(SPDesktop *desktop);
+    ~RectTool() override;
+
+	void set(const Inkscape::Preferences::Entry& val) override;
+	bool root_handler(GdkEvent* event) override;
+	bool item_handler(SPItem* item, GdkEvent* event) override;
+private:
+	SPRect *rect;
+	Geom::Point center;
+
+  	gdouble rx;	/* roundness radius (x direction) */
+  	gdouble ry;	/* roundness radius (y direction) */
+
+	sigc::connection sel_changed_connection;
+
+	void drag(Geom::Point const pt, guint state);
+	void finishItem();
+	void cancel();
+	void selection_changed(Inkscape::Selection* selection);
+};
+
+}
+}
+}
+
+#endif
diff --git a/src/ui/tools/select-tool.cpp b/src/ui/tools/select-tool.cpp
new file mode 100644
index 0000000..0e80c3d
--- /dev/null
+++ b/src/ui/tools/select-tool.cpp
@@ -0,0 +1,1146 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Selection and transformation context
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Abhishek Sharma
+ *   Jon A. Cruz <jon@joncruz.org>
+ *
+ * Copyright (C) 2010      authors
+ * Copyright (C) 2006      Johan Engelen <johan@shouraizou.nl>
+ * Copyright (C) 1999-2005 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"  // only include where actually required!
+#endif
+
+#include <cstring>
+#include <string>
+
+#include <gtkmm/widget.h>
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "include/macros.h"
+#include "layer-manager.h"
+#include "message-stack.h"
+#include "rubberband.h"
+#include "selection-chemistry.h"
+#include "selection-describer.h"
+#include "selection.h"
+#include "seltrans.h"
+
+#include "actions/actions-tools.h" // set_active_tool()
+
+#include "display/drawing-item.h"
+#include "display/control/canvas-item-catchall.h"
+#include "display/control/canvas-item-drawing.h"
+#include "display/control/snap-indicator.h"
+
+#include "object/box3d.h"
+#include "style.h"
+
+#include "ui/cursor-utils.h"
+#include "ui/modifiers.h"
+
+#include "ui/tools/select-tool.h"
+
+#include "ui/widget/canvas.h"
+
+
+using Inkscape::DocumentUndo;
+using Inkscape::Modifiers::Modifier;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static gint rb_escaped = 0; // if non-zero, rubberband was canceled by esc, so the next button release should not deselect
+static gint drag_escaped = 0; // if non-zero, drag was canceled by esc
+static bool is_cycling = false;
+
+SelectTool::SelectTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/select", "select.svg")
+    , dragging(false)
+    , _force_dragging(false)
+    , _alt_on(false)
+    , moved(false)
+    , button_press_state(0)
+    , cycling_wrap(true)
+    , item(nullptr)
+    , _seltrans(nullptr)
+    , _describer(nullptr)
+{
+    auto select_click = Modifier::get(Modifiers::Type::SELECT_ADD_TO)->get_label();
+    auto select_scroll = Modifier::get(Modifiers::Type::SELECT_CYCLE)->get_label();
+
+    // cursors in select context
+    _default_cursor = "select.svg";
+
+    no_selection_msg = g_strdup_printf(
+        _("No objects selected. Click, %s+click, %s+scroll mouse on top of objects, or drag around objects to select."),
+        select_click.c_str(), select_scroll.c_str());
+
+    this->_describer = new Inkscape::SelectionDescriber(
+                desktop->selection, 
+                desktop->messageStack(),
+                _("Click selection again to toggle scale/rotation handles"),
+                no_selection_msg);
+
+    this->_seltrans = new Inkscape::SelTrans(desktop);
+
+    sp_event_context_read(this, "show");
+    sp_event_context_read(this, "transform");
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/select/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+SelectTool::~SelectTool()
+{
+    this->enableGrDrag(false);
+
+    if (grabbed) {
+        grabbed->ungrab();
+        grabbed = nullptr;
+    }
+
+    delete this->_seltrans;
+    this->_seltrans = nullptr;
+
+    delete this->_describer;
+    this->_describer = nullptr;
+    g_free(no_selection_msg);
+
+    if (item) {
+        sp_object_unref(item);
+        item = nullptr;
+    }
+}
+
+void SelectTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "show") {
+        if (val.getString() == "outline") {
+            this->_seltrans->setShow(Inkscape::SelTrans::SHOW_OUTLINE);
+        } else {
+            this->_seltrans->setShow(Inkscape::SelTrans::SHOW_CONTENT);
+        }
+    }
+}
+
+bool SelectTool::sp_select_context_abort() {
+    Inkscape::SelTrans *seltrans = this->_seltrans;
+
+    if (this->dragging) {
+        if (this->moved) { // cancel dragging an object
+            seltrans->ungrab();
+            this->moved = FALSE;
+            this->dragging = FALSE;
+            this->discard_delayed_snap_event();
+            drag_escaped = 1;
+
+            if (this->item) {
+                // only undo if the item is still valid
+                if (this->item->document) {
+                    DocumentUndo::undo(_desktop->getDocument());
+                }
+
+                sp_object_unref( this->item, nullptr);
+            }
+            this->item = nullptr;
+
+            _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Move canceled."));
+            return true;
+        }
+    } else {
+        if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+            Inkscape::Rubberband::get(_desktop)->stop();
+            rb_escaped = 1;
+            defaultMessageContext()->clear();
+            _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selection canceled."));
+            return true;
+        }
+    }
+    return false;
+}
+
+static bool
+key_is_a_modifier (guint key) {
+    return (key == GDK_KEY_Alt_L ||
+                key == GDK_KEY_Alt_R ||
+                key == GDK_KEY_Control_L ||
+                key == GDK_KEY_Control_R ||
+                key == GDK_KEY_Shift_L ||
+                key == GDK_KEY_Shift_R ||
+                key == GDK_KEY_Meta_L ||  // Meta is when you press Shift+Alt (at least on my machine)
+            key == GDK_KEY_Meta_R);
+}
+
+static void
+sp_select_context_up_one_layer(SPDesktop *desktop)
+{
+    /* Click in empty place, go up one level -- but don't leave a layer to root.
+     *
+     * (Rationale: we don't usually allow users to go to the root, since that
+     * detracts from the layer metaphor: objects at the root level can in front
+     * of or behind layers.  Whereas it's fine to go to the root if editing
+     * a document that has no layers (e.g. a non-Inkscape document).)
+     *
+     * Once we support editing SVG "islands" (e.g. <svg> embedded in an xhtml
+     * document), we might consider further restricting the below to disallow
+     * leaving a layer to go to a non-layer.
+     */
+    if (SPObject *const current_layer = desktop->layerManager().currentLayer()) {
+        SPObject *const parent = current_layer->parent;
+        SPGroup *current_group = dynamic_cast<SPGroup *>(current_layer);
+        if ( parent
+             && ( parent->parent
+                  || !( current_group
+                        && ( SPGroup::LAYER == current_group->layerMode() ) ) ) )
+        {
+            desktop->layerManager().setCurrentLayer(parent);
+            if (current_group && (SPGroup::LAYER != current_group->layerMode())) {
+                desktop->getSelection()->set(current_layer);
+            }
+        }
+    }
+}
+
+bool SelectTool::item_handler(SPItem* item, GdkEvent* event) {
+    gint ret = FALSE;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    // make sure we still have valid objects to move around
+    if (this->item && this->item->document == nullptr) {
+        this->sp_select_context_abort();
+    }
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                /* Left mousebutton */
+
+                // save drag origin
+                xp = (gint) event->button.x;
+                yp = (gint) event->button.y;
+                within_tolerance = true;
+
+                // remember what modifiers were on before button press
+                this->button_press_state = event->button.state;
+                bool first_hit = Modifier::get(Modifiers::Type::SELECT_FIRST_HIT)->active(this->button_press_state);
+                bool force_drag = Modifier::get(Modifiers::Type::SELECT_FORCE_DRAG)->active(this->button_press_state);
+                bool always_box = Modifier::get(Modifiers::Type::SELECT_ALWAYS_BOX)->active(this->button_press_state);
+                bool touch_path = Modifier::get(Modifiers::Type::SELECT_TOUCH_PATH)->active(this->button_press_state);
+
+                // if shift or ctrl was pressed, do not move objects;
+                // pass the event to root handler which will perform rubberband, shift-click, ctrl-click, ctrl-drag
+                if (!(always_box || first_hit || touch_path)) {
+
+                    this->dragging = TRUE;
+                    this->moved = FALSE;
+
+                    this->set_cursor("select-dragging.svg");
+
+                    // remember the clicked item in this->item:
+                    if (this->item) {
+                        sp_object_unref(this->item, nullptr);
+                        this->item = nullptr;
+                    }
+
+                    this->item = sp_event_context_find_item (_desktop, Geom::Point(event->button.x, event->button.y), force_drag, FALSE);
+                    sp_object_ref(this->item, nullptr);
+
+                    rb_escaped = drag_escaped = 0;
+
+                    if (grabbed) {
+                        grabbed->ungrab();
+                        grabbed = nullptr;
+                    }
+
+                    grabbed = _desktop->getCanvasDrawing();
+                    grabbed->grab(Gdk::KEY_PRESS_MASK      |
+                                  Gdk::KEY_RELEASE_MASK    |
+                                  Gdk::BUTTON_PRESS_MASK   |
+                                  Gdk::BUTTON_RELEASE_MASK |
+                                  Gdk::POINTER_MOTION_MASK );
+
+                    ret = TRUE;
+                }
+            } else if (event->button.button == 3 && !this->dragging) {
+                // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
+                this->sp_select_context_abort();
+            }
+            break;
+    
+
+        case GDK_ENTER_NOTIFY: {
+            if (!dragging && !_alt_on && !_desktop->isWaitingCursor()) {
+                this->set_cursor("select-mouseover.svg");
+            }
+            break;
+        }
+        case GDK_LEAVE_NOTIFY:
+            if (!dragging && !_force_dragging && !_desktop->isWaitingCursor()) {
+                this->set_cursor("select.svg");
+            }
+            break;
+
+        case GDK_KEY_PRESS:
+            if (get_latin_keyval (&event->key) == GDK_KEY_space) {
+                if (this->dragging && this->grabbed) {
+                    /* stamping mode: show content mode moving */
+                    _seltrans->stamp();
+                    ret = TRUE;
+                }
+            } else if (get_latin_keyval (&event->key) == GDK_KEY_Tab) {
+                if (this->dragging && this->grabbed) {
+                    _seltrans->getNextClosestPoint(false);
+                } else {
+                    sp_selection_item_next(_desktop);
+                }
+                ret = TRUE;
+            } else if (get_latin_keyval (&event->key) == GDK_KEY_ISO_Left_Tab) {
+                if (this->dragging && this->grabbed) {
+                    _seltrans->getNextClosestPoint(true);
+                } else {
+                    sp_selection_item_prev(_desktop);
+                }
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_BUTTON_RELEASE:
+        case GDK_KEY_RELEASE:
+            if (_alt_on) {
+                _default_cursor = "select-mouseover.svg";
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+        ret = ToolBase::item_handler(item, event);
+    }
+
+    return ret;
+}
+
+void SelectTool::sp_select_context_cycle_through_items(Inkscape::Selection *selection, GdkEventScroll *scroll_event) {
+    if ( this->cycling_items.empty() )
+        return;
+
+    Inkscape::DrawingItem *arenaitem;
+
+    if(cycling_cur_item) {
+        arenaitem = cycling_cur_item->get_arenaitem(_desktop->dkey);
+        arenaitem->setOpacity(0.3);
+    }
+
+    // Find next item and activate it
+
+
+    std::vector<SPItem *>::iterator next = cycling_items.end();
+
+    if ((scroll_event->direction == GDK_SCROLL_UP) ||
+        (scroll_event->direction == GDK_SCROLL_SMOOTH && scroll_event->delta_y < 0)) {
+        if (! cycling_cur_item) {
+            next = cycling_items.begin();
+        } else {
+            next = std::find( cycling_items.begin(), cycling_items.end(), cycling_cur_item );
+            g_assert (next != cycling_items.end());
+            ++next;
+            if (next == cycling_items.end()) {
+                if ( cycling_wrap ) {
+                    next = cycling_items.begin();
+                } else {
+                    --next;
+                }
+            }
+        }
+    } else { 
+        if (! cycling_cur_item) {
+            next = cycling_items.end();
+            --next;
+        } else {
+            next = std::find( cycling_items.begin(), cycling_items.end(), cycling_cur_item );
+            g_assert (next != cycling_items.end());
+            if (next == cycling_items.begin()){
+                if ( cycling_wrap ) { 
+                    next = cycling_items.end();
+                    --next;
+                }
+            } else {
+                --next;
+            }
+        }
+    }
+
+    this->cycling_cur_item = *next;
+    g_assert(next != cycling_items.end());
+    g_assert(cycling_cur_item != nullptr);
+
+    arenaitem = cycling_cur_item->get_arenaitem(_desktop->dkey);
+    arenaitem->setOpacity(1.0);
+
+    if (Modifier::get(Modifiers::Type::SELECT_ADD_TO)->active(scroll_event->state)) {
+        selection->add(cycling_cur_item);
+    } else {
+        selection->set(cycling_cur_item);
+    }
+}
+
+void SelectTool::sp_select_context_reset_opacities() {
+    for (auto item : this->cycling_items_cmp) {
+        if (item) {
+            Inkscape::DrawingItem *arenaitem = item->get_arenaitem(_desktop->dkey);
+            arenaitem->setOpacity(SP_SCALE24_TO_FLOAT(item->style->opacity.value));
+        } else {
+            g_assert_not_reached();
+        }
+    }
+
+    this->cycling_items_cmp.clear();
+    this->cycling_cur_item = nullptr;
+}
+
+bool SelectTool::root_handler(GdkEvent* event) {
+    SPItem *item = nullptr;
+    SPItem *item_at_point = nullptr, *group_at_point = nullptr, *item_in_group = nullptr;
+    gint ret = FALSE;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    // make sure we still have valid objects to move around
+    if (this->item && this->item->document == nullptr) {
+        this->sp_select_context_abort();
+    }
+
+    switch (event->type) {
+        case GDK_2BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (!selection->isEmpty()) {
+                    SPItem *clicked_item = selection->items().front();
+
+                    if (dynamic_cast<SPGroup *>(clicked_item) && !dynamic_cast<SPBox3D *>(clicked_item)) { // enter group if it's not a 3D box
+                        _desktop->layerManager().setCurrentLayer(clicked_item);
+                        _desktop->getSelection()->clear();
+                        this->dragging = false;
+                        this->discard_delayed_snap_event();
+
+                    } else { // switch tool
+                        Geom::Point const button_pt(event->button.x, event->button.y);
+                        Geom::Point const p(_desktop->w2d(button_pt));
+                        set_active_tool(_desktop, clicked_item, p);
+                    }
+                } else {
+                    sp_select_context_up_one_layer(_desktop);
+                }
+
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                // save drag origin
+                xp = (gint) event->button.x;
+                yp = (gint) event->button.y;
+                within_tolerance = true;
+
+                Geom::Point const button_pt(event->button.x, event->button.y);
+                Geom::Point const p(_desktop->w2d(button_pt));
+
+                if(Modifier::get(Modifiers::Type::SELECT_TOUCH_PATH)->active(event->button.state)) {
+                    Inkscape::Rubberband::get(_desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                } else {
+                    Inkscape::Rubberband::get(_desktop)->defaultMode();
+                }
+
+                Inkscape::Rubberband::get(_desktop)->start(_desktop, p);
+
+                if (this->grabbed) {
+                    grabbed->ungrab();
+                    this->grabbed = nullptr;
+                }
+
+                grabbed = _desktop->getCanvasCatchall();
+                grabbed->grab(Gdk::KEY_PRESS_MASK      |
+                              Gdk::KEY_RELEASE_MASK    |
+                              Gdk::BUTTON_PRESS_MASK   |
+                              Gdk::BUTTON_RELEASE_MASK |
+                              Gdk::POINTER_MOTION_MASK );
+
+                // remember what modifiers were on before button press
+                this->button_press_state = event->button.state;
+
+                this->moved = FALSE;
+
+                rb_escaped = drag_escaped = 0;
+
+                ret = TRUE;
+            } else if (event->button.button == 3) {
+                // right click; do not eat it so that right-click menu can appear, but cancel dragging & rubberband
+                this->sp_select_context_abort();
+            }
+            break;
+
+        case GDK_MOTION_NOTIFY:
+        {
+            if (this->grabbed && event->button.state & (GDK_SHIFT_MASK | GDK_MOD1_MASK)) {
+                _desktop->snapindicator->remove_snaptarget();
+            }
+
+            tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+            bool first_hit = Modifier::get(Modifiers::Type::SELECT_FIRST_HIT)->active(this->button_press_state);
+            bool force_drag = Modifier::get(Modifiers::Type::SELECT_FORCE_DRAG)->active(this->button_press_state);
+            bool always_box = Modifier::get(Modifiers::Type::SELECT_ALWAYS_BOX)->active(this->button_press_state);
+
+            if ((event->motion.state & GDK_BUTTON1_MASK)) {
+                Geom::Point const motion_pt(event->motion.x, event->motion.y);
+                Geom::Point const p(_desktop->w2d(motion_pt));
+                if ( within_tolerance
+                     && ( abs( (gint) event->motion.x - xp ) < tolerance )
+                     && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
+                    break; // do not drag if we're within tolerance from origin
+                }
+                // Once the user has moved farther than tolerance from the original location
+                // (indicating they intend to move the object, not click), then always process the
+                // motion notify coordinates as given (no snapping back to origin)
+                within_tolerance = false;
+
+                if (first_hit || (force_drag && !always_box && !selection->isEmpty())) {
+                    // if it's not click and ctrl or alt was pressed (the latter with some selection
+                    // but not with shift) we want to drag rather than rubberband
+                    this->dragging = TRUE;
+                    this->set_cursor("select-dragging.svg");
+                }
+
+                if (this->dragging) {
+                    /* User has dragged fast, so we get events on root (lauris)*/
+                    // not only that; we will end up here when ctrl-dragging as well
+                    // and also when we started within tolerance, but trespassed tolerance outside of item
+                    if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                        Inkscape::Rubberband::get(_desktop)->stop();
+                    }
+                    this->defaultMessageContext()->clear();
+
+                    // Look for an item where the mouse was reported to be by mouse press (not mouse move).
+                    item_at_point = _desktop->getItemAtPoint(Geom::Point(xp, yp), FALSE);
+
+                    if (item_at_point || this->moved || force_drag) {
+                        // drag only if starting from an item, or if something is already grabbed, or if alt-dragging
+                        if (!this->moved) {
+                            item_in_group = _desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE);
+                            group_at_point = _desktop->getGroupAtPoint(Geom::Point(event->button.x, event->button.y));
+
+                            {
+                                SPGroup *selGroup = dynamic_cast<SPGroup *>(selection->single());
+                                if (selGroup && (selGroup->layerMode() == SPGroup::LAYER)) {
+                                    group_at_point = selGroup;
+                                }
+                            }
+
+                            // group-at-point is meant to be topmost item if it's a group,
+                            // not topmost group of all items at point
+                            if (group_at_point != item_in_group &&
+                                !(group_at_point && item_at_point &&
+                                  group_at_point->isAncestorOf(item_at_point))) {
+                                group_at_point = nullptr;
+                            }
+
+                            // if neither a group nor an item (possibly in a group) at point are selected, set selection to the item at point
+                            if ((!item_in_group || !selection->includes(item_in_group)) &&
+                                (!group_at_point || !selection->includes(group_at_point)) && !force_drag) {
+                                // select what is under cursor
+                                if (!_seltrans->isEmpty()) {
+                                    _seltrans->resetState();
+                                }
+
+                                // when simply ctrl-dragging, we don't want to go into groups
+                                if (item_at_point && !selection->includes(item_at_point)) {
+                                    selection->set(item_at_point);
+                                }
+                            } // otherwise, do not change selection so that dragging selected-within-group items, as well as alt-dragging, is possible
+
+                            _seltrans->grab(p, -1, -1, FALSE, TRUE);
+                            this->moved = TRUE;
+                        }
+
+                        if (!_seltrans->isEmpty()) {
+                            // this->discard_delayed_snap_event();
+                            _seltrans->moveTo(p, event->button.state);
+                        }
+
+                        _desktop->scroll_to_point(p);
+                        gobble_motion_events(GDK_BUTTON1_MASK);
+                        ret = TRUE;
+                    } else {
+                        this->dragging = FALSE;
+                        this->discard_delayed_snap_event();
+                    }
+
+                } else {
+                    if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                        Inkscape::Rubberband::get(_desktop)->move(p);
+
+                        auto touch_path = Modifier::get(Modifiers::Type::SELECT_TOUCH_PATH)->get_label();
+                        auto mode = Inkscape::Rubberband::get(_desktop)->getMode();
+                        if (mode == RUBBERBAND_MODE_TOUCHPATH) {
+                            this->defaultMessageContext()->setF(Inkscape::NORMAL_MESSAGE,
+                                _("<b>Draw over</b> objects to select them; release <b>%s</b> to switch to rubberband selection"), touch_path.c_str());
+                        } else if (mode == RUBBERBAND_MODE_TOUCHRECT) {
+                            this->defaultMessageContext()->setF(Inkscape::NORMAL_MESSAGE,
+                                _("<b>Drag near</b> objects to select them; press <b>%s</b> to switch to touch selection"), touch_path.c_str());
+                        } else {
+                            this->defaultMessageContext()->setF(Inkscape::NORMAL_MESSAGE,
+                                _("<b>Drag around</b> objects to select them; press <b>%s</b> to switch to touch selection"), touch_path.c_str());
+                        }
+
+                        gobble_motion_events(GDK_BUTTON1_MASK);
+                    }
+                }
+            }
+            break;
+        }
+        case GDK_BUTTON_RELEASE:
+            xp = yp = 0;
+
+            if ((event->button.button == 1) && (this->grabbed)) {
+                if (this->dragging) {
+
+                    if (this->moved) {
+                        // item has been moved
+                        _seltrans->ungrab();
+                        this->moved = FALSE;
+                    } else if (this->item && !drag_escaped) {
+                        // item has not been moved -> simply a click, do selecting
+                        if (!selection->isEmpty()) {
+                            if(Modifier::get(Modifiers::Type::SELECT_ADD_TO)->active(event->button.state)) {
+                                // with shift, toggle selection
+                                _seltrans->resetState();
+                                selection->toggle(this->item);
+                            } else {
+                                SPObject* single = selection->single();
+                                SPGroup *singleGroup = dynamic_cast<SPGroup *>(single);
+                                // without shift, increase state (i.e. toggle scale/rotation handles)
+                                if (selection->includes(this->item)) {
+                                    _seltrans->increaseState();
+                                } else if (singleGroup && (singleGroup->layerMode() == SPGroup::LAYER) && single->isAncestorOf(this->item)) {
+                                    _seltrans->increaseState();
+                                } else {
+                                    _seltrans->resetState();
+                                    selection->set(this->item);
+                                }
+                            }
+                        } else { // simple or shift click, no previous selection
+                            _seltrans->resetState();
+                            selection->set(this->item);
+                        }
+                    }
+
+                    this->dragging = FALSE;
+
+                    auto window = _desktop->getCanvas()->get_window();
+
+                    if (!_alt_on) {
+                        if (_force_dragging) {
+                            this->set_cursor(_default_cursor);
+                            _force_dragging = false;
+                        } else {
+                            this->set_cursor("select-mouseover.svg");
+                        }
+                    }
+
+                    this->discard_delayed_snap_event();
+
+                    if (this->item) {
+                        sp_object_unref( this->item, nullptr);
+                    }
+
+                    this->item = nullptr;
+                } else {
+                    Inkscape::Rubberband *r = Inkscape::Rubberband::get(_desktop);
+
+                    if (r->is_started() && !within_tolerance) {
+                        // this was a rubberband drag
+                        std::vector<SPItem*> items;
+
+                        if (r->getMode() == RUBBERBAND_MODE_RECT) {
+                            Geom::OptRect const b = r->getRectangle();
+                            items = _desktop->getDocument()->getItemsInBox(_desktop->dkey, (*b) * _desktop->dt2doc());
+                        } else if (r->getMode() == RUBBERBAND_MODE_TOUCHRECT) {
+                            Geom::OptRect const b = r->getRectangle();
+                            items = _desktop->getDocument()->getItemsPartiallyInBox(_desktop->dkey, (*b) * _desktop->dt2doc());
+                        } else if (r->getMode() == RUBBERBAND_MODE_TOUCHPATH) {
+                            bool topmost_items_only = prefs->getBool("/options/selection/touchsel_topmost_only");
+                            items = _desktop->getDocument()->getItemsAtPoints(_desktop->dkey, r->getPoints(), true, topmost_items_only);
+                        }
+
+                        _seltrans->resetState();
+                        r->stop();
+                        this->defaultMessageContext()->clear();
+
+                        if(Modifier::get(Modifiers::Type::SELECT_ADD_TO)->active(event->button.state)) {
+                            // with shift, add to selection
+                            selection->addList (items);
+                        } else {
+                            // without shift, simply select anew
+                            selection->setList (items);
+                        }
+
+                    } else { // it was just a click, or a too small rubberband
+                        r->stop();
+
+                        bool add_to = Modifier::get(Modifiers::Type::SELECT_ADD_TO)->active(event->button.state);
+                        bool in_groups = Modifier::get(Modifiers::Type::SELECT_IN_GROUPS)->active(event->button.state);
+                        bool force_drag = Modifier::get(Modifiers::Type::SELECT_FORCE_DRAG)->active(event->button.state);
+
+                        if (add_to && !rb_escaped && !drag_escaped) {
+                            // this was a shift+click or alt+shift+click, select what was clicked upon
+
+                            if (in_groups) {
+                                // go into groups, honoring force_drag (Alt)
+                                item = sp_event_context_find_item (_desktop,
+                                                   Geom::Point(event->button.x, event->button.y), force_drag, TRUE);
+                            } else {
+                                // don't go into groups, honoring Alt
+                                item = sp_event_context_find_item (_desktop,
+                                                   Geom::Point(event->button.x, event->button.y), force_drag, FALSE);
+                            }
+
+                            if (item) {
+                                selection->toggle(item);
+                                item = nullptr;
+                            }
+
+                        } else if ((in_groups || force_drag) && !rb_escaped && !drag_escaped) { // ctrl+click, alt+click
+                            item = sp_event_context_find_item (_desktop,
+                                         Geom::Point(event->button.x, event->button.y), force_drag, in_groups);
+
+                            if (item) {
+                                if (selection->includes(item)) {
+                                    _seltrans->increaseState();
+                                } else {
+                                    _seltrans->resetState();
+                                    selection->set(item);
+                                }
+
+                                item = nullptr;
+                            }
+                        } else { // click without shift, simply deselect, unless with Alt or something was cancelled
+                            if (!selection->isEmpty()) {
+                                if (!(rb_escaped) && !(drag_escaped) && !force_drag) {
+                                    selection->clear();
+                                }
+
+                                rb_escaped = 0;
+                            }
+                        }
+                    }
+
+                    ret = TRUE;
+                }
+                if (grabbed) {
+                    grabbed->ungrab();
+                    grabbed = nullptr;
+                }
+                // Think is not necessary now
+                // _desktop->updateNow();
+            }
+
+            if (event->button.button == 1) {
+                Inkscape::Rubberband::get(_desktop)->stop(); // might have been started in another tool!
+            }
+
+            this->button_press_state = 0;
+            break;
+
+        case GDK_SCROLL: {
+
+            GdkEventScroll *scroll_event = (GdkEventScroll*) event;
+
+            // do nothing specific if alt was not pressed
+            if ( ! Modifier::get(Modifiers::Type::SELECT_CYCLE)->active(scroll_event->state))
+                break;
+
+            is_cycling = true;
+
+            /* Rebuild list of items underneath the mouse pointer */
+            Geom::Point p = _desktop->d2w(_desktop->point());
+            SPItem *item = _desktop->getItemAtPoint(p, true, nullptr);
+            this->cycling_items.clear();
+
+            SPItem *tmp = nullptr;
+            while(item != nullptr) {
+                this->cycling_items.push_back(item);
+                item = _desktop->getItemAtPoint(p, true, item);
+                if (selection->includes(item)) tmp = item;
+            }
+
+            /* Compare current item list with item list during previous scroll ... */
+            bool item_lists_differ = this->cycling_items != this->cycling_items_cmp;
+
+            if(item_lists_differ) {
+                this->sp_select_context_reset_opacities();
+                for (auto l : this->cycling_items_cmp) 
+                    selection->remove(l); // deselects the previous content of the cycling loop
+                this->cycling_items_cmp = (this->cycling_items);
+
+                // set opacities in new stack
+                for(auto item : this->cycling_items) {
+                    if (item) {
+                        Inkscape::DrawingItem *arenaitem = item->get_arenaitem(_desktop->dkey);
+                        arenaitem->setOpacity(0.3);
+                    }
+                }
+            }
+            if(!cycling_cur_item) cycling_cur_item = tmp;
+
+            this->cycling_wrap = prefs->getBool("/options/selection/cycleWrap", true);
+
+            // Cycle through the items underneath the mouse pointer, one-by-one
+            this->sp_select_context_cycle_through_items(selection, scroll_event);
+
+            ret = TRUE;
+
+            GtkWindow *w = GTK_WINDOW(gtk_widget_get_toplevel(GTK_WIDGET(_desktop->getCanvas()->gobj())));
+            if (w) {
+                gtk_window_present(w);
+                _desktop->getCanvas()->grab_focus();
+            }
+            break;
+        }
+
+        case GDK_KEY_PRESS: // keybindings for select context
+            {
+            {
+            guint keyval = get_latin_keyval(&event->key);
+            
+                bool alt = ( MOD__ALT(event)
+                                    || (keyval == GDK_KEY_Alt_L)
+                                    || (keyval == GDK_KEY_Alt_R)
+                                    || (keyval == GDK_KEY_Meta_L)
+                                    || (keyval == GDK_KEY_Meta_R));
+
+            if (alt) {
+                _alt_on = true;
+            }
+
+            if (!key_is_a_modifier (keyval)) {
+                this->defaultMessageContext()->clear();
+            } else if (this->grabbed || _seltrans->isGrabbed()) {
+                if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                    // if Alt then change cursor to moving cursor:
+                    if (Modifier::get(Modifiers::Type::SELECT_TOUCH_PATH)->active(event->key.state | keyval)) {
+                        Inkscape::Rubberband::get(_desktop)->setMode(RUBBERBAND_MODE_TOUCHPATH);
+                    }
+                } else {
+                    // do not change the statusbar text when mousekey is down to move or transform the object,
+                    // because the statusbar text is already updated somewhere else.
+                    break;
+                }
+            } else {
+                    Modifiers::responsive_tooltip(this->defaultMessageContext(), event, 6,
+                        Modifiers::Type::SELECT_IN_GROUPS, Modifiers::Type::MOVE_CONFINE,
+                        Modifiers::Type::SELECT_ADD_TO, Modifiers::Type::SELECT_TOUCH_PATH,
+                        Modifiers::Type::SELECT_CYCLE, Modifiers::Type::SELECT_FORCE_DRAG);
+
+                    // if Alt and nonempty selection, show moving cursor ("move selected"):
+                    if (alt && !selection->isEmpty() && !_desktop->isWaitingCursor()) {
+                        this->set_cursor("select-dragging.svg");
+                        _force_dragging = true;
+                        _default_cursor = "select.svg";
+                    }
+                    //*/
+                    break;
+            }
+            }
+
+            gdouble const nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px"); // in px
+            int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
+            auto const y_dir = _desktop->yaxisdir();
+
+            switch (get_latin_keyval (&event->key)) {
+                case GDK_KEY_Left: // move selection left
+                case GDK_KEY_KP_Left:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events( get_latin_keyval(&event->key), 0); // with any mask
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->moveScreen(mul*-10, 0); // shift
+                            } else {
+                                _desktop->getSelection()->moveScreen(mul*-1, 0); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->move(mul*-10*nudge, 0); // shift
+                            } else {
+                                _desktop->getSelection()->move(mul*-nudge, 0); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Up: // move selection up
+                case GDK_KEY_KP_Up:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events(get_latin_keyval(&event->key), 0); // with any mask
+                        mul *= -y_dir;
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->moveScreen(0, mul*10); // shift
+                            } else {
+                                _desktop->getSelection()->moveScreen(0, mul*1); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->move(0, mul*10*nudge); // shift
+                            } else {
+                                _desktop->getSelection()->move(0, mul*nudge); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Right: // move selection right
+                case GDK_KEY_KP_Right:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events(get_latin_keyval(&event->key), 0); // with any mask
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->moveScreen(mul*10, 0); // shift
+                            } else {
+                                _desktop->getSelection()->moveScreen(mul*1, 0); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->move(mul*10*nudge, 0); // shift
+                            } else {
+                                _desktop->getSelection()->move(mul*nudge, 0); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Down: // move selection down
+                case GDK_KEY_KP_Down:
+                    if (!MOD__CTRL(event)) { // not ctrl
+                        gint mul = 1 + gobble_key_events(get_latin_keyval(&event->key), 0); // with any mask
+                        mul *= -y_dir;
+                        
+                        if (MOD__ALT(event)) { // alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->moveScreen(0, mul*-10); // shift
+                            } else {
+                                _desktop->getSelection()->moveScreen(0, mul*-1); // no shift
+                            }
+                        } else { // no alt
+                            if (MOD__SHIFT(event)) {
+                                _desktop->getSelection()->move(0, mul*-10*nudge); // shift
+                            } else {
+                                _desktop->getSelection()->move(0, mul*-nudge); // no shift
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_Escape:
+                    if (!this->sp_select_context_abort()) {
+                        selection->clear();
+                    }
+                    
+                    ret = TRUE;
+                    break;
+
+                case GDK_KEY_a:
+                case GDK_KEY_A:
+                    if (MOD__CTRL_ONLY(event)) {
+                        sp_edit_select_all(_desktop);
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_space:
+                    /* stamping mode: show outline mode moving */
+                    /* FIXME: Is next condition ok? (lauris) */
+                    if (this->dragging && this->grabbed) {
+                        _seltrans->stamp();
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_x:
+                case GDK_KEY_X:
+                    if (MOD__ALT_ONLY(event)) {
+                        _desktop->setToolboxFocusTo("select-x");
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_bracketleft:
+                    if (MOD__ALT(event)) {
+                        gint mul = 1 + gobble_key_events(get_latin_keyval(&event->key), 0); // with any mask
+                        selection->rotateScreen(-mul * y_dir);
+                    } else if (MOD__CTRL(event)) {
+                        selection->rotate(-90 * y_dir);
+                    } else if (snaps) {
+                        selection->rotate(-180.0/snaps * y_dir);
+                    }
+                    
+                    ret = TRUE;
+                    break;
+                    
+                case GDK_KEY_bracketright:
+                    if (MOD__ALT(event)) {
+                        gint mul = 1 + gobble_key_events(get_latin_keyval(&event->key), 0); // with any mask
+                        selection->rotateScreen(mul * y_dir);
+                    } else if (MOD__CTRL(event)) {
+                        selection->rotate(90 * y_dir);
+                    } else if (snaps) {
+                        selection->rotate(180.0/snaps * y_dir);
+                    }
+                    
+                    ret = TRUE;
+                    break;
+
+                case GDK_KEY_Return:
+                    if (MOD__CTRL_ONLY(event)) {
+                        if (selection->singleItem()) {
+                            SPItem *clicked_item = selection->singleItem();
+                            SPGroup *clickedGroup = dynamic_cast<SPGroup *>(clicked_item);
+                            if ( (clickedGroup && (clickedGroup->layerMode() != SPGroup::LAYER)) || dynamic_cast<SPBox3D *>(clicked_item)) { // enter group or a 3D box
+                                _desktop->layerManager().setCurrentLayer(clicked_item);
+                                _desktop->getSelection()->clear();
+                            } else {
+                                _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Selected object is not a group. Cannot enter."));
+                            }
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_BackSpace:
+                    if (MOD__CTRL_ONLY(event)) {
+                        sp_select_context_up_one_layer(_desktop);
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_s:
+                case GDK_KEY_S:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        if (!selection->isEmpty()) {
+                            _seltrans->increaseState();
+                        }
+                        
+                        ret = TRUE;
+                    }
+                    break;
+                    
+                case GDK_KEY_g:
+                case GDK_KEY_G:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        _desktop->selection->toGuides();
+                        ret = true;
+                    }
+                    break;
+                    
+                default:
+                    break;
+            }
+            break;
+            }
+        case GDK_KEY_RELEASE: {
+            guint keyval = get_latin_keyval(&event->key);
+            if (key_is_a_modifier (keyval)) {
+                this->defaultMessageContext()->clear();
+            }
+            
+            bool alt = ( MOD__ALT(event)
+                         || (keyval == GDK_KEY_Alt_L)
+                         || (keyval == GDK_KEY_Alt_R)
+                         || (keyval == GDK_KEY_Meta_L)
+                         || (keyval == GDK_KEY_Meta_R));
+
+            if (alt) {
+                _alt_on = false;
+            }
+
+            if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                // if Alt then change cursor to moving cursor:
+                if (alt) {
+                    Inkscape::Rubberband::get(_desktop)->defaultMode();
+                }
+            } else {
+                if (alt) {
+                    // quit cycle-selection and reset opacities
+                    if (is_cycling) {
+                        this->sp_select_context_reset_opacities();
+                        is_cycling = false;
+                    }
+                }
+            }
+
+            // set cursor to default.
+            if (alt && !(this->grabbed || _seltrans->isGrabbed()) && !selection->isEmpty() && !_desktop->isWaitingCursor()) {
+                this->set_cursor(_default_cursor);
+                _force_dragging = false;
+            }
+            break;
+        }
+        default:
+            break;
+    }
+
+    if (!ret) {
+        ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/select-tool.h b/src/ui/tools/select-tool.h
new file mode 100644
index 0000000..51ed41a
--- /dev/null
+++ b/src/ui/tools/select-tool.h
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_SELECT_CONTEXT_H__
+#define __SP_SELECT_CONTEXT_H__
+
+/*
+ * Select tool
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2002 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/tool-base.h"
+
+#define SP_SELECT_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::SelectTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_SELECT_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::SelectTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+  class SelTrans;
+  class SelectionDescriber;
+}
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class SelectTool : public ToolBase {
+public:
+    SelectTool(SPDesktop *desktop);
+    ~SelectTool() override;
+
+    bool dragging;
+    bool moved;
+    guint button_press_state;
+
+        std::vector<SPItem *> cycling_items;
+        std::vector<SPItem *> cycling_items_cmp;
+        SPItem *cycling_cur_item;
+    bool cycling_wrap;
+
+    SPItem *item;
+        Inkscape::CanvasItem *grabbed = nullptr;
+    Inkscape::SelTrans *_seltrans;
+    Inkscape::SelectionDescriber *_describer;
+    gchar *no_selection_msg = nullptr;
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+    bool root_handler(GdkEvent* event) override;
+    bool item_handler(SPItem* item, GdkEvent* event) override;
+private:
+    bool sp_select_context_abort();
+    void sp_select_context_cycle_through_items(Inkscape::Selection *selection, GdkEventScroll *scroll_event);
+    void sp_select_context_reset_opacities();
+
+    bool _alt_on;
+    bool _force_dragging;
+
+    std::string _default_cursor;
+};
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/spiral-tool.cpp b/src/ui/tools/spiral-tool.cpp
new file mode 100644
index 0000000..f79eab7
--- /dev/null
+++ b/src/ui/tools/spiral-tool.cpp
@@ -0,0 +1,411 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Spiral drawing context
+ *
+ * Authors:
+ *   Mitsuru Oka
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2001 Lauris Kaplinski
+ * Copyright (C) 2001-2002 Mitsuru Oka
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include "spiral-tool.h"
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "message-context.h"
+#include "selection.h"
+
+#include "include/macros.h"
+
+#include "object/sp-namedview.h"
+#include "object/sp-spiral.h"
+
+#include "ui/icon-names.h"
+#include "ui/shape-editor.h"
+
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+SpiralTool::SpiralTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/shapes/spiral", "spiral.svg")
+    , spiral(nullptr)
+    , revo(3)
+    , exp(1)
+    , t0(0)
+{
+    sp_event_context_read(this, "expansion");
+    sp_event_context_read(this, "revolution");
+    sp_event_context_read(this, "t0");
+
+    this->shape_editor = new ShapeEditor(desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    Inkscape::Selection *selection = desktop->getSelection();
+    this->sel_changed_connection.disconnect();
+
+    this->sel_changed_connection = selection->connectChanged(sigc::mem_fun(this, &SpiralTool::selection_changed));
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/shapes/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/shapes/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+SpiralTool::~SpiralTool() {
+    ungrabCanvasEvents();
+
+    this->finishItem();
+    this->sel_changed_connection.disconnect();
+
+    this->enableGrDrag(false);
+
+    delete this->shape_editor;
+    this->shape_editor = nullptr;
+
+    /* fixme: This is necessary because we do not grab */
+    if (this->spiral) {
+    	this->finishItem();
+    }
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ */
+void SpiralTool::selection_changed(Inkscape::Selection *selection) {
+    this->shape_editor->unset_item();
+    this->shape_editor->set_item(selection->singleItem());
+}
+
+
+void SpiralTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring name = val.getEntryName();
+
+    if (name == "expansion") {
+        this->exp = CLAMP(val.getDouble(), 0.0, 1000.0);
+    } else if (name == "revolution") {
+        this->revo = CLAMP(val.getDouble(3.0), 0.05, 40.0);
+    } else if (name == "t0") {
+        this->t0 = CLAMP(val.getDouble(), 0.0, 0.999);
+    }
+}
+
+bool SpiralTool::root_handler(GdkEvent* event) {
+    static gboolean dragging;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    gint ret = FALSE;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                dragging = TRUE;
+
+                this->center = this->setup_for_drag_start(event);
+
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(this->center, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                m.unSetup();
+
+                grabCanvasEvents();
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_MOTION_NOTIFY:
+            if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
+                if ( this->within_tolerance
+                     && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                     && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                    break; // do not drag if we're within tolerance from origin
+                }
+                // Once the user has moved farther than tolerance from the original location
+                // (indicating they intend to draw, not click), then always process the
+                // motion notify coordinates as given (no snapping back to origin)
+                this->within_tolerance = false;
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop, true, this->spiral);
+                m.freeSnapReturnByRef(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                m.unSetup();
+
+                this->drag(motion_dt, event->motion.state);
+
+                gobble_motion_events(GDK_BUTTON1_MASK);
+
+                ret = TRUE;
+            } else if (!this->sp_event_context_knot_mouseover()) {
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point motion_dt(_desktop->w2d(motion_w));
+                m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
+                m.unSetup();
+            }
+            break;
+
+        case GDK_BUTTON_RELEASE:
+            this->xp = this->yp = 0;
+            if (event->button.button == 1) {
+                dragging = FALSE;
+                this->discard_delayed_snap_event();
+
+                if (!this->within_tolerance) {
+                    // we've been dragging, finish the spiral
+                    this->finishItem();
+                } else if (this->item_to_select) {
+                    // no dragging, select clicked item if any
+                    if (event->button.state & GDK_SHIFT_MASK) {
+                        selection->toggle(this->item_to_select);
+                    } else {
+                        selection->set(this->item_to_select);
+                    }
+                } else {
+                    // click in an empty space
+                    selection->clear();
+                }
+
+                this->item_to_select = nullptr;
+                ret = TRUE;
+                ungrabCanvasEvents();
+            }
+            break;
+
+        case GDK_KEY_PRESS:
+            switch (get_latin_keyval(&event->key)) {
+                case GDK_KEY_Alt_R:
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+                case GDK_KEY_Meta_R:
+                    sp_event_show_modifier_tip(this->defaultMessageContext(), event,
+                                               _("<b>Ctrl</b>: snap angle"),
+                                               nullptr,
+                                               _("<b>Alt</b>: lock spiral radius"));
+                    break;
+
+                case GDK_KEY_x:
+                case GDK_KEY_X:
+                    if (MOD__ALT_ONLY(event)) {
+                        _desktop->setToolboxFocusTo("spiral-revolutions");
+                        ret = TRUE;
+                    }
+                    break;
+
+                case GDK_KEY_Escape:
+                	if (dragging) {
+                		dragging = false;
+                		this->discard_delayed_snap_event();
+                		// if drawing, cancel, otherwise pass it up for deselecting
+                		this->cancel();
+                		ret = TRUE;
+                	}
+                	break;
+
+                case GDK_KEY_space:
+                    if (dragging) {
+                        ungrabCanvasEvents();
+                        dragging = false;
+                        this->discard_delayed_snap_event();
+
+                        if (!this->within_tolerance) {
+                            // we've been dragging, finish the spiral
+                            finishItem();
+                        }
+                        // do not return true, so that space would work switching to selector
+                    }
+                    break;
+
+                case GDK_KEY_Delete:
+                case GDK_KEY_KP_Delete:
+                case GDK_KEY_BackSpace:
+                    ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
+        case GDK_KEY_RELEASE:
+            switch (get_latin_keyval(&event->key)) {
+                case GDK_KEY_Alt_L:
+                case GDK_KEY_Alt_R:
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+                case GDK_KEY_Meta_R:
+                    this->defaultMessageContext()->clear();
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void SpiralTool::drag(Geom::Point const &p, guint state) {
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
+
+    if (!this->spiral) {
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return;
+        }
+
+        // Create object
+        Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+        repr->setAttribute("sodipodi:type", "spiral");
+
+        // Set style
+        sp_desktop_apply_style_tool(_desktop, repr, "/tools/shapes/spiral", false);
+
+        this->spiral = SP_SPIRAL(currentLayer()->appendChildRepr(repr));
+        Inkscape::GC::release(repr);
+        this->spiral->transform = currentLayer()->i2doc_affine().inverse();
+        this->spiral->updateRepr();
+    }
+
+    SnapManager &m = _desktop->namedview->snap_manager;
+    m.setup(_desktop, true, this->spiral);
+    Geom::Point pt2g = p;
+    m.freeSnapReturnByRef(pt2g, Inkscape::SNAPSOURCE_NODE_HANDLE);
+    m.unSetup();
+    Geom::Point const p0 = _desktop->dt2doc(this->center);
+    Geom::Point const p1 = _desktop->dt2doc(pt2g);
+
+    Geom::Point const delta = p1 - p0;
+    gdouble const rad = Geom::L2(delta);
+
+    // Start angle calculated from end angle and number of revolutions.
+    gdouble arg = Geom::atan2(delta) - 2.0*M_PI * spiral->revo;
+
+    if (state & GDK_CONTROL_MASK) {
+        /* Snap start angle */
+        double snaps_radian = M_PI/snaps;
+        arg = std::round(arg/snaps_radian) * snaps_radian;
+    }
+
+    /* Fixme: these parameters should be got from dialog box */
+    this->spiral->setPosition(p0[Geom::X], p0[Geom::Y],
+                           /*expansion*/ this->exp,
+                           /*revolution*/ this->revo,
+                           rad, arg,
+                           /*t0*/ this->t0);
+
+    /* status text */
+    Inkscape::Util::Quantity q = Inkscape::Util::Quantity(rad, "px");
+    Glib::ustring rads = q.string(_desktop->namedview->display_units);
+    this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                               _("<b>Spiral</b>: radius %s, angle %.2f&#176;; with <b>Ctrl</b> to snap angle"),
+                                rads.c_str(), arg * 180/M_PI + 360*spiral->revo);
+}
+
+void SpiralTool::finishItem() {
+    this->message_context->clear();
+
+    if (this->spiral != nullptr) {
+    	if (this->spiral->rad == 0) {
+    		this->cancel(); // Don't allow the creating of zero sized spiral, for example when the start and and point snap to the snap grid point
+    		return;
+    	}
+
+        spiral->set_shape();
+        spiral->updateRepr(SP_OBJECT_WRITE_EXT);
+        // compensate stroke scaling couldn't be done in doWriteTransform
+        double const expansion = spiral->transform.descrim();
+        spiral->doWriteTransform(spiral->transform, nullptr, true);
+        spiral->adjust_stroke_width_recursive(expansion);
+
+        _desktop->getSelection()->set(this->spiral);
+        DocumentUndo::done(_desktop->getDocument(), _("Create spiral"), INKSCAPE_ICON("draw-spiral"));
+
+        this->spiral = nullptr;
+    }
+}
+
+void SpiralTool::cancel() {
+    _desktop->getSelection()->clear();
+    ungrabCanvasEvents();
+
+    if (this->spiral != nullptr) {
+    	this->spiral->deleteObject();
+    	this->spiral = nullptr;
+    }
+
+    this->within_tolerance = false;
+    this->xp = 0;
+    this->yp = 0;
+    this->item_to_select = nullptr;
+
+    DocumentUndo::cancel(_desktop->getDocument());
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/spiral-tool.h b/src/ui/tools/spiral-tool.h
new file mode 100644
index 0000000..203617c
--- /dev/null
+++ b/src/ui/tools/spiral-tool.h
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_SPIRAL_CONTEXT_H__
+#define __SP_SPIRAL_CONTEXT_H__
+
+/** \file
+ * Spiral drawing context
+ */
+/*
+ * Authors:
+ *   Mitsuru Oka
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2001 Lauris Kaplinski
+ * Copyright (C) 2001-2002 Mitsuru Oka
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <sigc++/connection.h>
+#include <2geom/point.h>
+#include "ui/tools/tool-base.h"
+
+#define SP_SPIRAL_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::SpiralTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_SPIRAL_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::SpiralTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+class SPSpiral;
+
+namespace Inkscape {
+
+class Selection;
+
+namespace UI {
+namespace Tools {
+
+class SpiralTool : public ToolBase {
+public:
+    SpiralTool(SPDesktop *desktop);
+    ~SpiralTool() override;
+
+	void set(const Inkscape::Preferences::Entry& val) override;
+	bool root_handler(GdkEvent* event) override;
+private:
+	SPSpiral * spiral;
+	Geom::Point center;
+	gdouble revo;
+	gdouble exp;
+	gdouble t0;
+
+    sigc::connection sel_changed_connection;
+
+	void drag(Geom::Point const &p, guint state);
+	void finishItem();
+	void cancel();
+	void selection_changed(Inkscape::Selection *selection);
+};
+
+}
+}
+}
+
+#endif
diff --git a/src/ui/tools/spray-tool.cpp b/src/ui/tools/spray-tool.cpp
new file mode 100644
index 0000000..705b129
--- /dev/null
+++ b/src/ui/tools/spray-tool.cpp
@@ -0,0 +1,1538 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Spray Tool
+ *
+ * Authors:
+ *   Pierre-Antoine MARC
+ *   Pierre CACLIN
+ *   Aurel-Aimé MARMION
+ *   Julien LERAY
+ *   Benoît LAVORATA
+ *   Vincent MONTAGNE
+ *   Pierre BARBRY-BLOT
+ *   Steren GIANNINI (steren.giannini@gmail.com)
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *   Jabiertxo Arraiza <jabier.arraiza@marker.es>
+ *   Adrian Boguszewski
+ *
+ * Copyright (C) 2009 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <numeric>
+#include <vector>
+#include <tuple>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include <2geom/circle.h>
+
+
+#include "context-fns.h"
+#include "desktop-events.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "filter-chemistry.h"
+#include "inkscape.h"
+#include "include/macros.h"
+#include "message-context.h"
+#include "path-chemistry.h"
+#include "selection.h"
+
+#include "display/cairo-utils.h"
+#include "display/curve.h"
+#include "display/drawing-context.h"
+#include "display/drawing.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/control/canvas-item-drawing.h"
+
+#include "object/box3d.h"
+#include "object/sp-use.h"
+#include "object/sp-item-transform.h"
+
+#include "svg/svg.h"
+#include "svg/svg-color.h"
+
+#include "ui/icon-names.h"
+#include "ui/toolbar/spray-toolbar.h"
+#include "ui/tools/spray-tool.h"
+
+
+using Inkscape::DocumentUndo;
+
+#define DDC_RED_RGBA 0xff0000ff
+#define DYNA_MIN_WIDTH 1.0e-6
+
+// Disabled in 0.91 because of Bug #1274831 (crash, spraying an object
+// with the mode: spray object in single path)
+// Please enable again when working on 1.0
+#define ENABLE_SPRAY_MODE_SINGLE_PATH
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum {
+    PICK_COLOR,
+    PICK_OPACITY,
+    PICK_R,
+    PICK_G,
+    PICK_B,
+    PICK_H,
+    PICK_S,
+    PICK_L
+};
+
+/**
+ * This function returns pseudo-random numbers from a normal distribution
+ * @param mu : mean
+ * @param sigma : standard deviation ( > 0 )
+ */
+inline double NormalDistribution(double mu, double sigma)
+{
+  // use Box Muller's algorithm
+  return mu + sigma * sqrt( -2.0 * log(g_random_double_range(0, 1)) ) * cos( 2.0*M_PI*g_random_double_range(0, 1) );
+}
+
+/* Method to rotate items */
+static void sp_spray_rotate_rel(Geom::Point c, SPDesktop */*desktop*/, SPItem *item, Geom::Rotate const &rotation)
+{
+    Geom::Translate const s(c);
+    Geom::Affine affine = s.inverse() * rotation * s;
+    // Rotate item.
+    item->set_i2d_affine(item->i2dt_affine() * affine);
+    // Use each item's own transform writer, consistent with sp_selection_apply_affine()
+    item->doWriteTransform(item->transform);
+    // Restore the center position (it's changed because the bbox center changed)
+    if (item->isCenterSet()) {
+        item->setCenter(c);
+        item->updateRepr();
+    }
+}
+
+/* Method to scale items */
+static void sp_spray_scale_rel(Geom::Point c, SPDesktop */*desktop*/, SPItem *item, Geom::Scale const &scale)
+{
+    Geom::Translate const s(c);
+    item->set_i2d_affine(item->i2dt_affine() * s.inverse() * scale * s);
+    item->doWriteTransform(item->transform);
+}
+
+SprayTool::SprayTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/spray", "spray.svg", false)
+    , pressure(TC_DEFAULT_PRESSURE)
+    , dragging(false)
+    , usepressurewidth(false)
+    , usepressurepopulation(false)
+    , usepressurescale(false)
+    , usetilt(false)
+    , usetext(false)
+    , width(0.2)
+    , ratio(0)
+    , tilt(0)
+    , rotation_variation(0)
+    , population(0)
+    , scale_variation(1)
+    , scale(1)
+    , mean(0.2)
+    , standard_deviation(0.2)
+    , distrib(1)
+    , mode(0)
+    , is_drawing(false)
+    , is_dilating(false)
+    , has_dilated(false)
+    , dilate_area(nullptr)
+    , no_overlap(false)
+    , picker(false)
+    , pick_center(true)
+    , pick_inverse_value(false)
+    , pick_fill(false)
+    , pick_stroke(false)
+    , pick_no_overlap(false)
+    , over_transparent(true)
+    , over_no_transparent(true)
+    , offset(0)
+    , pick(0)
+    , do_trace(false)
+    , pick_to_size(false)
+    , pick_to_presence(false)
+    , pick_to_color(false)
+    , pick_to_opacity(false)
+    , invert_picked(false)
+    , gamma_picked(0)
+    , rand_picked(0)
+{
+    dilate_area = new Inkscape::CanvasItemBpath(desktop->getCanvasControls());
+    dilate_area->set_stroke(0xff9900ff);
+    dilate_area->set_fill(0x0, SP_WIND_RULE_EVENODD);
+    dilate_area->hide();
+
+    this->is_drawing = false;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    prefs->setBool("/dialogs/clonetiler/dotrace", false);
+    if (prefs->getBool("/tools/spray/selcue")) {
+        this->enableSelectionCue();
+    }
+    if (prefs->getBool("/tools/spray/gradientdrag")) {
+        this->enableGrDrag();
+    }
+    desktop->getSelection()->setBackup();
+    sp_event_context_read(this, "distrib");
+    sp_event_context_read(this, "width");
+    sp_event_context_read(this, "ratio");
+    sp_event_context_read(this, "tilt");
+    sp_event_context_read(this, "rotation_variation");
+    sp_event_context_read(this, "scale_variation");
+    sp_event_context_read(this, "mode");
+    sp_event_context_read(this, "population");
+    sp_event_context_read(this, "mean");
+    sp_event_context_read(this, "standard_deviation");
+    sp_event_context_read(this, "usepressurewidth");
+    sp_event_context_read(this, "usepressurepopulation");
+    sp_event_context_read(this, "usepressurescale");
+    sp_event_context_read(this, "Scale");
+    sp_event_context_read(this, "offset");
+    sp_event_context_read(this, "picker");
+    sp_event_context_read(this, "pick_center");
+    sp_event_context_read(this, "pick_inverse_value");
+    sp_event_context_read(this, "pick_fill");
+    sp_event_context_read(this, "pick_stroke");
+    sp_event_context_read(this, "pick_no_overlap");
+    sp_event_context_read(this, "over_no_transparent");
+    sp_event_context_read(this, "over_transparent");
+    sp_event_context_read(this, "no_overlap");
+}
+
+SprayTool::~SprayTool() {
+    if (!object_set.isEmpty()) {
+        object_set.clear();
+    }
+    _desktop->getSelection()->restoreBackup();
+    this->enableGrDrag(false);
+    this->style_set_connection.disconnect();
+
+    if (this->dilate_area) {
+        delete this->dilate_area;
+        this->dilate_area = nullptr;
+    }
+}
+
+void SprayTool::update_cursor(bool /*with_shift*/) {
+    guint num = 0;
+    gchar *sel_message = nullptr;
+
+    if (!_desktop->selection->isEmpty()) {
+        num = (guint)boost::distance(_desktop->selection->items());
+        sel_message = g_strdup_printf(ngettext("<b>%i</b> object selected","<b>%i</b> objects selected",num), num);
+    } else {
+        sel_message = g_strdup_printf("%s", _("<b>Nothing</b> selected"));
+    }
+
+    switch (this->mode) {
+        case SPRAY_MODE_COPY:
+            this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag, click or click and scroll to spray <b>copies</b> of the initial selection."), sel_message);
+            break;
+        case SPRAY_MODE_CLONE:
+            this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag, click or click and scroll to spray <b>clones</b> of the initial selection."), sel_message);
+            break;
+        case SPRAY_MODE_SINGLE_PATH:
+            this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag, click or click and scroll to spray in a <b>single path</b> of the initial selection."), sel_message);
+            break;
+        default:
+            break;
+    }
+    g_free(sel_message);
+}
+
+
+void SprayTool::setCloneTilerPrefs() {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    this->do_trace = prefs->getBool("/dialogs/clonetiler/dotrace", false);
+    this->pick = prefs->getInt("/dialogs/clonetiler/pick");
+    this->pick_to_size = prefs->getBool("/dialogs/clonetiler/pick_to_size", false);
+    this->pick_to_presence = prefs->getBool("/dialogs/clonetiler/pick_to_presence", false);
+    this->pick_to_color = prefs->getBool("/dialogs/clonetiler/pick_to_color", false);
+    this->pick_to_opacity = prefs->getBool("/dialogs/clonetiler/pick_to_opacity", false);
+    this->rand_picked = 0.01 * prefs->getDoubleLimited("/dialogs/clonetiler/rand_picked", 0, 0, 100);
+    this->invert_picked = prefs->getBool("/dialogs/clonetiler/invert_picked", false);
+    this->gamma_picked = prefs->getDoubleLimited("/dialogs/clonetiler/gamma_picked", 0, -10, 10);
+}
+
+void SprayTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "mode") {
+        this->mode = val.getInt();
+        this->update_cursor(false);
+    } else if (path == "width") {
+        this->width = 0.01 * CLAMP(val.getInt(10), 1, 100);
+    } else if (path == "usepressurewidth") {
+        this->usepressurewidth = val.getBool();
+    } else if (path == "usepressurepopulation") {
+        this->usepressurepopulation = val.getBool();
+    } else if (path == "usepressurescale") {
+        this->usepressurescale = val.getBool();
+    } else if (path == "population") {
+        this->population = 0.01 * CLAMP(val.getInt(10), 1, 100);
+    } else if (path == "rotation_variation") {
+        this->rotation_variation = CLAMP(val.getDouble(0.0), 0, 100.0);
+    } else if (path == "scale_variation") {
+        this->scale_variation = CLAMP(val.getDouble(1.0), 0, 100.0);
+    } else if (path == "standard_deviation") {
+        this->standard_deviation = 0.01 * CLAMP(val.getInt(10), 1, 100);
+    } else if (path == "mean") {
+        this->mean = 0.01 * CLAMP(val.getInt(10), 1, 100);
+// Not implemented in the toolbar and preferences yet
+    } else if (path == "distribution") {
+        this->distrib = val.getInt(1);
+    } else if (path == "tilt") {
+        this->tilt = CLAMP(val.getDouble(0.1), 0, 1000.0);
+    } else if (path == "ratio") {
+        this->ratio = CLAMP(val.getDouble(), 0.0, 0.9);
+    } else if (path == "offset") {
+        this->offset = val.getDoubleLimited(100.0, 0, 1000.0);
+    } else if (path == "pick_center") {
+        this->pick_center =  val.getBool(true);
+    } else if (path == "pick_inverse_value") {
+        this->pick_inverse_value =  val.getBool(false);
+    } else if (path == "pick_fill") {
+        this->pick_fill =  val.getBool(false);
+    } else if (path == "pick_stroke") {
+        this->pick_stroke =  val.getBool(false);
+    } else if (path == "pick_no_overlap") {
+        this->pick_no_overlap =  val.getBool(false);
+    } else if (path == "over_no_transparent") {
+        this->over_no_transparent =  val.getBool(true);
+    } else if (path == "over_transparent") {
+        this->over_transparent =  val.getBool(true);
+    } else if (path == "no_overlap") {
+        this->no_overlap = val.getBool(false);
+    } else if (path == "picker") {
+        this->picker =  val.getBool(false);
+    }
+}
+
+static void sp_spray_extinput(SprayTool *tc, GdkEvent *event)
+{
+    if (gdk_event_get_axis(event, GDK_AXIS_PRESSURE, &tc->pressure)) {
+        tc->pressure = CLAMP(tc->pressure, TC_MIN_PRESSURE, TC_MAX_PRESSURE);
+    } else {
+        tc->pressure = TC_DEFAULT_PRESSURE;
+    }
+}
+
+static double get_width(SprayTool *tc)
+{
+    double pressure = (tc->usepressurewidth? tc->pressure / TC_DEFAULT_PRESSURE : 1);
+    return pressure * tc->width;
+}
+
+static double get_dilate_radius(SprayTool *tc)
+{
+    return 250 * get_width(tc)/tc->getDesktop()->current_zoom();
+}
+
+static double get_path_mean(SprayTool *tc)
+{
+    return tc->mean;
+}
+
+static double get_path_standard_deviation(SprayTool *tc)
+{
+    return tc->standard_deviation;
+}
+
+static double get_population(SprayTool *tc)
+{
+    double pressure = (tc->usepressurepopulation? tc->pressure / TC_DEFAULT_PRESSURE : 1);
+    return pressure * tc->population;
+}
+
+static double get_pressure(SprayTool *tc)
+{
+    double pressure = tc->pressure / TC_DEFAULT_PRESSURE;
+    return pressure;
+}
+
+static double get_move_mean(SprayTool *tc)
+{
+    return tc->mean;
+}
+
+static double get_move_standard_deviation(SprayTool *tc)
+{
+    return tc->standard_deviation;
+}
+
+/**
+ * Method to handle the distribution of the items
+ * @param[out]  radius : radius of the position of the sprayed object
+ * @param[out]  angle : angle of the position of the sprayed object
+ * @param[in]   a : mean
+ * @param[in]   s : standard deviation
+ * @param[in]   choice :
+
+ */
+static void random_position(double &radius, double &angle, double &a, double &s, int /*choice*/)
+{
+    // angle is taken from an uniform distribution
+    angle = g_random_double_range(0, M_PI*2.0);
+
+    // radius is taken from a Normal Distribution
+    double radius_temp =-1;
+    while(!((radius_temp >= 0) && (radius_temp <=1 )))
+    {
+        radius_temp = NormalDistribution(a, s);
+    }
+    // Because we are in polar coordinates, a special treatment has to be done to the radius.
+    // Otherwise, positions taken from an uniform repartition on radius and angle will not seam to
+    // be uniformily distributed on the disk (more at the center and less at the boundary).
+    // We counter this effect with a 0.5 exponent. This is empiric.
+    radius = pow(radius_temp, 0.5);
+
+}
+
+static void sp_spray_transform_path(SPItem * item, Geom::Path &path, Geom::Affine affine, Geom::Point center){
+    path *= i2anc_affine(static_cast<SPItem *>(item->parent), nullptr).inverse();
+    path *= item->transform.inverse();
+    Geom::Affine dt2p;
+    if (item->parent) {
+        dt2p = static_cast<SPItem *>(item->parent)->i2dt_affine().inverse();
+    } else {
+        dt2p = item->document->dt2doc();
+    }
+    Geom::Affine i2dt = item->i2dt_affine() * Geom::Translate(center).inverse() * affine * Geom::Translate(center);
+    path *= i2dt * dt2p;
+    path *= i2anc_affine(static_cast<SPItem *>(item->parent), nullptr);
+}
+
+/**
+Randomizes \a val by \a rand, with 0 < val < 1 and all values (including 0, 1) having the same
+probability of being displaced.
+ */
+double randomize01(double val, double rand)
+{
+    double base = MIN (val - rand, 1 - 2*rand);
+    if (base < 0) {
+        base = 0;
+    }
+    val = base + g_random_double_range (0, MIN (2 * rand, 1 - base));
+    return CLAMP(val, 0, 1); // this should be unnecessary with the above provisions, but just in case...
+}
+
+static guint32 getPickerData(Geom::IntRect area, SPDesktop *desktop)
+{
+    Inkscape::CanvasItemDrawing *canvas_item_drawing = desktop->getCanvasDrawing();
+    Inkscape::Drawing *drawing = canvas_item_drawing->get_drawing();
+
+    // Ensure drawing up-to-date. (Is this really necessary?)
+    drawing->update();
+
+    // Get average color.
+    double R, G, B, A;
+    drawing->average_color(area, R, G, B, A);
+
+    //this can fix the bug #1511998 if confirmed
+    if ( A < 1e-6) {
+        R = 1.0;
+        G = 1.0;
+        B = 1.0;
+    }
+
+    return SP_RGBA32_F_COMPOSE(R, G, B, A);
+}
+
+static void showHidden(std::vector<SPItem *> items_down){
+    for (auto item_hidden : items_down) {
+        item_hidden->setHidden(false);
+        item_hidden->updateRepr();
+    }
+}
+//todo: maybe move same parameter to preferences
+static bool fit_item(SPDesktop *desktop,
+                     SPItem *item,
+                     Geom::OptRect bbox,
+                     Geom::Point &move,
+                     Geom::Point center,
+                     gint mode,
+                     double angle,
+                     double &_scale,
+                     double scale,
+                     bool picker,
+                     bool pick_center,
+                     bool pick_inverse_value,
+                     bool pick_fill,
+                     bool pick_stroke,
+                     bool pick_no_overlap,
+                     bool over_no_transparent,
+                     bool over_transparent,
+                     bool no_overlap,
+                     double offset,
+                     SPCSSAttr *css,
+                     bool trace_scale,
+                     int pick,
+                     bool do_trace,
+                     bool pick_to_size,
+                     bool pick_to_presence,
+                     bool pick_to_color,
+                     bool pick_to_opacity,
+                     bool invert_picked,
+                     double gamma_picked ,
+                     double rand_picked)
+{
+    SPDocument *doc = item->document;
+    double width = bbox->width();
+    double height = bbox->height();
+    double offset_width = (offset * width)/100.0 - (width);
+    if(offset_width < 0 ){
+        offset_width = 0;
+    }
+    double offset_height = (offset * height)/100.0 - (height);
+    if(offset_height < 0 ){
+        offset_height = 0;
+    }
+    if(picker && pick_to_size && !trace_scale && do_trace){
+        _scale = 0.1;
+    }
+    Geom::OptRect bbox_procesed = Geom::Rect(Geom::Point(bbox->left() - offset_width, bbox->top() - offset_height),Geom::Point(bbox->right() + offset_width, bbox->bottom() + offset_height));
+    Geom::Path path;
+    path.start(Geom::Point(bbox_procesed->left(), bbox_procesed->top()));
+    path.appendNew<Geom::LineSegment>(Geom::Point(bbox_procesed->right(), bbox_procesed->top()));
+    path.appendNew<Geom::LineSegment>(Geom::Point(bbox_procesed->right(), bbox_procesed->bottom()));
+    path.appendNew<Geom::LineSegment>(Geom::Point(bbox_procesed->left(), bbox_procesed->bottom()));
+    path.close(true);
+    sp_spray_transform_path(item, path, Geom::Scale(_scale), center);
+    sp_spray_transform_path(item, path, Geom::Scale(scale), center);
+    sp_spray_transform_path(item, path, Geom::Rotate(angle), center);
+    path *= Geom::Translate(move);
+    path *= desktop->doc2dt();
+    bbox_procesed = path.boundsFast();
+    double bbox_left_main = bbox_procesed->left();
+    double bbox_right_main = bbox_procesed->right();
+    double bbox_top_main = bbox_procesed->top();
+    double bbox_bottom_main = bbox_procesed->bottom();
+    double width_transformed = bbox_procesed->width();
+    double height_transformed = bbox_procesed->height();
+    Geom::Point mid_point = desktop->d2w(bbox_procesed->midpoint());
+    Geom::IntRect area = Geom::IntRect::from_xywh(floor(mid_point[Geom::X]), floor(mid_point[Geom::Y]), 1, 1);
+    guint32 rgba = getPickerData(area, desktop);
+    guint32 rgba2 = 0xffffff00;
+    Geom::Rect rect_sprayed(desktop->d2w(Geom::Point(bbox_left_main,bbox_top_main)), desktop->d2w(Geom::Point(bbox_right_main,bbox_bottom_main)));
+    if (!rect_sprayed.hasZeroArea()) {
+        rgba2 = getPickerData(rect_sprayed.roundOutwards(), desktop);
+    }
+    if(pick_no_overlap) {
+        if(rgba != rgba2) {
+            if(mode != SPRAY_MODE_ERASER) {
+                return false;
+            }
+        }
+    }
+    if(!pick_center) {
+        rgba = rgba2;
+    }
+    if(!over_transparent && (SP_RGBA32_A_F(rgba) == 0 || SP_RGBA32_A_F(rgba) < 1e-6)) {
+        if(mode != SPRAY_MODE_ERASER) {
+            return false;
+        }
+    }
+    if(!over_no_transparent && SP_RGBA32_A_F(rgba) > 0) {
+        if(mode != SPRAY_MODE_ERASER) {
+            return false;
+        }
+    }
+    if(offset < 100 ) {
+        offset_width = ((99.0 - offset) * width_transformed)/100.0 - width_transformed;
+        offset_height = ((99.0 - offset) * height_transformed)/100.0 - height_transformed;
+    } else {
+        offset_width = 0;
+        offset_height = 0;
+    }
+    std::vector<SPItem*> items_down = desktop->getDocument()->getItemsPartiallyInBox(desktop->dkey, *bbox_procesed);
+    Inkscape::Selection *selection = desktop->getSelection();
+    if (selection->isEmpty()) {
+        return false;
+    }
+    std::vector<SPItem*> const items_selected(selection->items().begin(), selection->items().end());
+    std::vector<SPItem*> items_down_erased;
+    for (std::vector<SPItem*>::const_iterator i=items_down.begin(); i!=items_down.end(); ++i) {
+        SPItem *item_down = *i;
+        Geom::OptRect bbox_down = item_down->documentVisualBounds();
+        double bbox_left = bbox_down->left();
+        double bbox_top = bbox_down->top();
+        gchar const * item_down_sharp = g_strdup_printf("#%s", item_down->getId());
+        items_down_erased.push_back(item_down);
+        for (auto item_selected : items_selected) {
+            gchar const * spray_origin;
+            if(!item_selected->getAttribute("inkscape:spray-origin")){
+                spray_origin = g_strdup_printf("#%s", item_selected->getId());
+            } else {
+                spray_origin = item_selected->getAttribute("inkscape:spray-origin");
+            }
+            if(strcmp(item_down_sharp, spray_origin) == 0 ||
+                (item_down->getAttribute("inkscape:spray-origin") &&
+                strcmp(item_down->getAttribute("inkscape:spray-origin"),spray_origin) == 0 ))
+            {
+                if(mode == SPRAY_MODE_ERASER) {
+                    if(strcmp(item_down_sharp, spray_origin) != 0 && !selection->includes(item_down) ){
+                        item_down->deleteObject();
+                        items_down_erased.pop_back();
+                        break;
+                    }
+                } else if(no_overlap) {
+                    if(!(offset_width < 0 && offset_height < 0 && std::abs(bbox_left - bbox_left_main) > std::abs(offset_width) &&
+                std::abs(bbox_top - bbox_top_main) > std::abs(offset_height))){
+                        if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                            showHidden(items_down);
+                        }
+                        return false;
+                    }
+                } else if(picker || over_transparent || over_no_transparent) {
+                    item_down->setHidden(true);
+                    item_down->updateRepr();
+                }
+            }
+        }
+    }
+    if(mode == SPRAY_MODE_ERASER){
+        if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+            showHidden(items_down_erased);
+        }
+        return false;
+    }
+    if(picker || over_transparent || over_no_transparent){
+        if(!no_overlap){
+            doc->ensureUpToDate();
+            rgba = getPickerData(area, desktop);
+            if (!rect_sprayed.hasZeroArea()) {
+                rgba2 = getPickerData(rect_sprayed.roundOutwards(), desktop);
+            }
+        }
+        if(pick_no_overlap){
+            if(rgba != rgba2){
+                if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                    showHidden(items_down);
+                }
+                return false;
+            }
+        }
+        if(!pick_center){
+            rgba = rgba2;
+        }
+        double opacity = 1.0;
+        gchar color_string[32]; *color_string = 0;
+        float r = SP_RGBA32_R_F(rgba);
+        float g = SP_RGBA32_G_F(rgba);
+        float b = SP_RGBA32_B_F(rgba);
+        float a = SP_RGBA32_A_F(rgba);
+        if(!over_transparent && (a == 0 || a < 1e-6)){
+            if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                showHidden(items_down);
+            }
+            return false;
+        }
+        if(!over_no_transparent && a > 0){
+            if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                showHidden(items_down);
+            }
+            return false;
+        }
+
+        if(picker && do_trace){
+            float hsl[3];
+            SPColor::rgb_to_hsl_floatv (hsl, r, g, b);
+
+            gdouble val = 0;
+            switch (pick) {
+            case PICK_COLOR:
+                val = 1 - hsl[2]; // inverse lightness; to match other picks where black = max
+                break;
+            case PICK_OPACITY:
+                val = a;
+                break;
+            case PICK_R:
+                val = r;
+                break;
+            case PICK_G:
+                val = g;
+                break;
+            case PICK_B:
+                val = b;
+                break;
+            case PICK_H:
+                val = hsl[0];
+                break;
+            case PICK_S:
+                val = hsl[1];
+                break;
+            case PICK_L:
+                val = 1 - hsl[2];
+                break;
+            default:
+                break;
+            }
+
+            if (rand_picked > 0) {
+                val = randomize01 (val, rand_picked);
+                r = randomize01 (r, rand_picked);
+                g = randomize01 (g, rand_picked);
+                b = randomize01 (b, rand_picked);
+            }
+
+            if (gamma_picked != 0) {
+                double power;
+                if (gamma_picked > 0)
+                    power = 1/(1 + fabs(gamma_picked));
+                else
+                    power = 1 + fabs(gamma_picked);
+
+                val = pow (val, power);
+                r = pow ((double)r, (double)power);
+                g = pow ((double)g, (double)power);
+                b = pow ((double)b, (double)power);
+            }
+
+            if (invert_picked) {
+                val = 1 - val;
+                r = 1 - r;
+                g = 1 - g;
+                b = 1 - b;
+            }
+
+            val = CLAMP (val, 0, 1);
+            r = CLAMP (r, 0, 1);
+            g = CLAMP (g, 0, 1);
+            b = CLAMP (b, 0, 1);
+
+            // recompose tweaked color
+            rgba = SP_RGBA32_F_COMPOSE(r, g, b, a);
+            if (pick_to_size) {
+                if(!trace_scale){
+                    if(pick_inverse_value) {
+                        _scale = 1.0 - val;
+                    } else {
+                        _scale = val;
+                    }
+                    if(_scale == 0.0) {
+                        if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                            showHidden(items_down);
+                        }
+                        return false;
+                    }
+                    if(!fit_item(desktop
+                                 , item
+                                 , bbox
+                                 , move
+                                 , center
+                                 , mode
+                                 , angle
+                                 , _scale
+                                 , scale
+                                 , picker
+                                 , pick_center
+                                 , pick_inverse_value
+                                 , pick_fill
+                                 , pick_stroke
+                                 , pick_no_overlap
+                                 , over_no_transparent
+                                 , over_transparent
+                                 , no_overlap
+                                 , offset
+                                 , css
+                                 , true
+                                 , pick
+                                 , do_trace
+                                 , pick_to_size
+                                 , pick_to_presence
+                                 , pick_to_color
+                                 , pick_to_opacity
+                                 , invert_picked
+                                 , gamma_picked
+                                 , rand_picked)
+                        )
+                    {
+                        if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                            showHidden(items_down);
+                        }
+                        return false;
+                    }
+                }
+            }
+
+            if (pick_to_opacity) {
+                if(pick_inverse_value) {
+                    opacity *= 1.0 - val;
+                } else {
+                    opacity *= val;
+                }
+                std::stringstream opacity_str;
+                opacity_str.imbue(std::locale::classic());
+                opacity_str << opacity;
+                sp_repr_css_set_property(css, "opacity", opacity_str.str().c_str());
+            }
+            if (pick_to_presence) {
+                if (g_random_double_range (0, 1) > val) {
+                    //Hiding the element is a way to retain original
+                    //behaviour of tiled clones for presence option.
+                    sp_repr_css_set_property(css, "opacity", "0");
+                }
+            }
+            if (pick_to_color) {
+                sp_svg_write_color(color_string, sizeof(color_string), rgba);
+                if(pick_fill){
+                    sp_repr_css_set_property(css, "fill", color_string);
+                }
+                if(pick_stroke){
+                    sp_repr_css_set_property(css, "stroke", color_string);
+                }
+            }
+            if (opacity < 1e-6) { // invisibly transparent, skip
+                if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+                    showHidden(items_down);
+                }
+                return false;
+            }
+        }
+        if(!do_trace){
+            if(!pick_center){
+                rgba = rgba2;
+            }
+            if (pick_inverse_value) {
+                r = 1 - SP_RGBA32_R_F(rgba);
+                g = 1 - SP_RGBA32_G_F(rgba);
+                b = 1 - SP_RGBA32_B_F(rgba);
+            } else {
+                r = SP_RGBA32_R_F(rgba);
+                g = SP_RGBA32_G_F(rgba);
+                b = SP_RGBA32_B_F(rgba);
+            }
+            rgba = SP_RGBA32_F_COMPOSE(r, g, b, a);
+            sp_svg_write_color(color_string, sizeof(color_string), rgba);
+            if(pick_fill){
+                sp_repr_css_set_property(css, "fill", color_string);
+            }
+            if(pick_stroke){
+                sp_repr_css_set_property(css, "stroke", color_string);
+            }
+        }
+        if(!no_overlap && (picker || over_transparent || over_no_transparent)){
+            showHidden(items_down);
+        }
+    }
+    return true;
+}
+
+static bool sp_spray_recursive(SPDesktop *desktop,
+                               Inkscape::ObjectSet *set,
+                               SPItem *item,
+                               SPItem *&single_path_output,
+                               Geom::Point p,
+                               Geom::Point /*vector*/,
+                               gint mode,
+                               double radius,
+                               double population,
+                               double &scale,
+                               double scale_variation,
+                               bool /*reverse*/,
+                               double mean,
+                               double standard_deviation,
+                               double ratio,
+                               double tilt,
+                               double rotation_variation,
+                               gint _distrib,
+                               bool no_overlap,
+                               bool picker,
+                               bool pick_center,
+                               bool pick_inverse_value,
+                               bool pick_fill,
+                               bool pick_stroke,
+                               bool pick_no_overlap,
+                               bool over_no_transparent,
+                               bool over_transparent,
+                               double offset,
+                               bool usepressurescale,
+                               double pressure,
+                               int pick,
+                               bool do_trace,
+                               bool pick_to_size,
+                               bool pick_to_presence,
+                               bool pick_to_color,
+                               bool pick_to_opacity,
+                               bool invert_picked,
+                               double gamma_picked ,
+                               double rand_picked)
+{
+    bool did = false;
+
+    {
+        // convert 3D boxes to ordinary groups before spraying their shapes
+        // TODO: ideally the original object is preserved.
+        SPBox3D *box = dynamic_cast<SPBox3D *>(item);
+        if (box) {
+            desktop->getSelection()->remove(dynamic_cast<SPObject *>(item));
+            set->remove(item);
+            item = box->convert_to_group();
+            set->add(item);
+            desktop->getSelection()->add(dynamic_cast<SPObject *>(item));
+        }
+    }
+
+    double _fid = g_random_double_range(0, 1);
+    double angle = g_random_double_range( - rotation_variation / 100.0 * M_PI , rotation_variation / 100.0 * M_PI );
+    double _scale = g_random_double_range( 1.0 - scale_variation / 100.0, 1.0 + scale_variation / 100.0 );
+    if(usepressurescale){
+        _scale = pressure;
+    }
+    double dr; double dp;
+    random_position( dr, dp, mean, standard_deviation, _distrib );
+    dr=dr*radius;
+
+    if (mode == SPRAY_MODE_COPY || mode == SPRAY_MODE_ERASER) {
+        Geom::OptRect a = item->documentVisualBounds();
+        if (a) {
+            if(_fid <= population)
+            {
+                SPDocument *doc = item->document;
+                gchar const * spray_origin;
+                if(!item->getAttribute("inkscape:spray-origin")){
+                    spray_origin = g_strdup_printf("#%s", item->getId());
+                } else {
+                    spray_origin = item->getAttribute("inkscape:spray-origin");
+                }
+                Geom::Point center = item->getCenter();
+                Geom::Point move = (Geom::Point(cos(tilt)*cos(dp)*dr/(1-ratio)+sin(tilt)*sin(dp)*dr/(1+ratio), -sin(tilt)*cos(dp)*dr/(1-ratio)+cos(tilt)*sin(dp)*dr/(1+ratio)))+(p-a->midpoint());
+                SPCSSAttr *css = sp_repr_css_attr_new();
+                if (mode == SPRAY_MODE_ERASER ||
+                   pick_no_overlap || no_overlap || picker ||
+                   !over_transparent || !over_no_transparent) {
+                    if(!fit_item(desktop
+                                 , item
+                                 , a
+                                 , move
+                                 , center
+                                 , mode
+                                 , angle
+                                 , _scale
+                                 , scale
+                                 , picker
+                                 , pick_center
+                                 , pick_inverse_value
+                                 , pick_fill
+                                 , pick_stroke
+                                 , pick_no_overlap
+                                 , over_no_transparent
+                                 , over_transparent
+                                 , no_overlap
+                                 , offset
+                                 , css
+                                 , false
+                                 , pick
+                                 , do_trace
+                                 , pick_to_size
+                                 , pick_to_presence
+                                 , pick_to_color
+                                 , pick_to_opacity
+                                 , invert_picked
+                                 , gamma_picked
+                                 , rand_picked)){
+                        return false;
+                    }
+                }
+                SPItem *item_copied;
+                // Duplicate
+                Inkscape::XML::Document* xml_doc = doc->getReprDoc();
+                Inkscape::XML::Node *old_repr = item->getRepr();
+                Inkscape::XML::Node *parent = old_repr->parent();
+                Inkscape::XML::Node *copy = old_repr->duplicate(xml_doc);
+                if(!copy->attribute("inkscape:spray-origin")){
+                    copy->setAttribute("inkscape:spray-origin", spray_origin);
+                }
+                parent->appendChild(copy);
+                SPObject *new_obj = doc->getObjectByRepr(copy);
+                item_copied = dynamic_cast<SPItem *>(new_obj);   // Conversion object->item
+                sp_spray_scale_rel(center,desktop, item_copied, Geom::Scale(_scale));
+                sp_spray_scale_rel(center,desktop, item_copied, Geom::Scale(scale));
+                sp_spray_rotate_rel(center,desktop,item_copied, Geom::Rotate(angle));
+                // Move the cursor p
+                item_copied->move_rel(Geom::Translate(move * desktop->doc2dt().withoutTranslation()));
+                Inkscape::GC::release(copy);
+                if(picker){
+                    sp_desktop_apply_css_recursive(item_copied, css, true);
+                }
+                did = true;
+            }
+        }
+#ifdef ENABLE_SPRAY_MODE_SINGLE_PATH
+    } else if (mode == SPRAY_MODE_SINGLE_PATH) {
+        if (item) {
+            SPDocument *doc = item->document;
+            Inkscape::XML::Document* xml_doc = doc->getReprDoc();
+            Inkscape::XML::Node *old_repr = item->getRepr();
+            Inkscape::XML::Node *parent = old_repr->parent();
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                if (_fid <= population) { // Rules the population of objects sprayed
+                    // Duplicates the parent item
+                    Inkscape::XML::Node *copy = old_repr->duplicate(xml_doc);
+                    gchar const * spray_origin;
+                    if(!copy->attribute("inkscape:spray-origin")){
+                        spray_origin = g_strdup_printf("#%s", old_repr->attribute("id"));
+                    } else {
+                        spray_origin = copy->attribute("inkscape:spray-origin");
+                    }
+                    parent->appendChild(copy);
+                    SPObject *new_obj = doc->getObjectByRepr(copy);
+                    SPItem *item_copied = dynamic_cast<SPItem *>(new_obj);
+
+                    // Move around the cursor
+                    Geom::Point move = (Geom::Point(cos(tilt)*cos(dp)*dr/(1-ratio)+sin(tilt)*sin(dp)*dr/(1+ratio), -sin(tilt)*cos(dp)*dr/(1-ratio)+cos(tilt)*sin(dp)*dr/(1+ratio)))+(p-a->midpoint());
+
+                    Geom::Point center = item->getCenter();
+                    sp_spray_scale_rel(center, desktop, item_copied, Geom::Scale(_scale, _scale));
+                    sp_spray_scale_rel(center, desktop, item_copied, Geom::Scale(scale, scale));
+                    sp_spray_rotate_rel(center, desktop, item_copied, Geom::Rotate(angle));
+                    item_copied->move_rel(Geom::Translate(move * desktop->doc2dt().withoutTranslation()));
+
+                    // Union
+                    // only works if no groups in selection
+                    ObjectSet object_set_tmp = *desktop->getSelection();
+                    object_set_tmp.clear();
+                    object_set_tmp.add(item_copied);
+                    object_set_tmp.removeLPESRecursive(true);
+                    if (dynamic_cast<SPUse*>(object_set_tmp.objects().front())) {
+                        object_set_tmp.unlinkRecursive(true);
+                    }
+                    if (single_path_output) { // Previous result
+                        object_set_tmp.add(single_path_output);
+                    }
+                    object_set_tmp.pathUnion(true);
+                    single_path_output = object_set_tmp.items().front();
+                    for (auto item : object_set_tmp.items()) {
+                        auto repr = item->getRepr();
+                        repr->setAttribute("inkscape:spray-origin", spray_origin);
+                    }
+                    object_set_tmp.clear();
+                    Inkscape::GC::release(copy);
+                    did = true;
+                }
+            }
+        }
+#endif
+    } else if (mode == SPRAY_MODE_CLONE) {
+        Geom::OptRect a = item->documentVisualBounds();
+        if (a) {
+            if(_fid <= population) {
+                SPDocument *doc = item->document;
+                gchar const * spray_origin;
+                if(!item->getAttribute("inkscape:spray-origin")){
+                    spray_origin = g_strdup_printf("#%s", item->getId());
+                } else {
+                    spray_origin = item->getAttribute("inkscape:spray-origin");
+                }
+                Geom::Point center=item->getCenter();
+                Geom::Point move = (Geom::Point(cos(tilt)*cos(dp)*dr/(1-ratio)+sin(tilt)*sin(dp)*dr/(1+ratio), -sin(tilt)*cos(dp)*dr/(1-ratio)+cos(tilt)*sin(dp)*dr/(1+ratio)))+(p-a->midpoint());
+                SPCSSAttr *css = sp_repr_css_attr_new();
+                if (mode == SPRAY_MODE_ERASER ||
+                   pick_no_overlap || no_overlap || picker ||
+                   !over_transparent || !over_no_transparent) {
+                    if(!fit_item(desktop
+                                 , item
+                                 , a
+                                 , move
+                                 , center
+                                 , mode
+                                 , angle
+                                 , _scale
+                                 , scale
+                                 , picker
+                                 , pick_center
+                                 , pick_inverse_value
+                                 , pick_fill
+                                 , pick_stroke
+                                 , pick_no_overlap
+                                 , over_no_transparent
+                                 , over_transparent
+                                 , no_overlap
+                                 , offset
+                                 , css
+                                 , true
+                                 , pick
+                                 , do_trace
+                                 , pick_to_size
+                                 , pick_to_presence
+                                 , pick_to_color
+                                 , pick_to_opacity
+                                 , invert_picked
+                                 , gamma_picked
+                                 , rand_picked))
+                    {
+                        return false;
+                    }
+                }
+                SPItem *item_copied;
+                Inkscape::XML::Document* xml_doc = doc->getReprDoc();
+                Inkscape::XML::Node *old_repr = item->getRepr();
+                Inkscape::XML::Node *parent = old_repr->parent();
+
+                // Creation of the clone
+                Inkscape::XML::Node *clone = xml_doc->createElement("svg:use");
+                // Ad the clone to the list of the parent's children
+                parent->appendChild(clone);
+                // Generates the link between parent and child attributes
+                if(!clone->attribute("inkscape:spray-origin")){
+                    clone->setAttribute("inkscape:spray-origin", spray_origin);
+                }
+                gchar *href_str = g_strdup_printf("#%s", old_repr->attribute("id"));
+                clone->setAttribute("xlink:href", href_str);
+                g_free(href_str);
+
+                SPObject *clone_object = doc->getObjectByRepr(clone);
+                // Conversion object->item
+                item_copied = dynamic_cast<SPItem *>(clone_object);
+                sp_spray_scale_rel(center, desktop, item_copied, Geom::Scale(_scale, _scale));
+                sp_spray_scale_rel(center, desktop, item_copied, Geom::Scale(scale, scale));
+                sp_spray_rotate_rel(center, desktop, item_copied, Geom::Rotate(angle));
+                item_copied->move_rel(Geom::Translate(move * desktop->doc2dt().withoutTranslation()));
+                if(picker){
+                    sp_desktop_apply_css_recursive(item_copied, css, true);
+                }
+                Inkscape::GC::release(clone);
+                did = true;
+            }
+        }
+    }
+
+    return did;
+}
+
+static bool sp_spray_dilate(SprayTool *tc, Geom::Point /*event_p*/, Geom::Point p, Geom::Point vector, bool reverse)
+{
+    SPDesktop *desktop = tc->getDesktop();
+    Inkscape::ObjectSet *set = tc->objectSet();
+    if (set->isEmpty()) {
+        return false;
+    }
+
+    bool did = false;
+    double radius = get_dilate_radius(tc);
+    double population = get_population(tc);
+    if (radius == 0 || population == 0) {
+        return false;
+    }
+    double path_mean = get_path_mean(tc);
+    if (radius == 0 || path_mean == 0) {
+        return false;
+    }
+    double path_standard_deviation = get_path_standard_deviation(tc);
+    if (radius == 0 || path_standard_deviation == 0) {
+        return false;
+    }
+    double move_mean = get_move_mean(tc);
+    double move_standard_deviation = get_move_standard_deviation(tc);
+
+    {
+        std::vector<SPItem*> const items(set->items().begin(), set->items().end());
+
+        for(auto item : items){
+            g_assert(item != nullptr);
+            sp_object_ref(item);
+        }
+
+        for(auto item : items){
+            g_assert(item != nullptr);
+            if (sp_spray_recursive(desktop
+                                , set
+                                , item
+                                , tc->single_path_output
+                                , p, vector
+                                , tc->mode
+                                , radius
+                                , population
+                                , tc->scale
+                                , tc->scale_variation
+                                , reverse
+                                , move_mean
+                                , move_standard_deviation
+                                , tc->ratio
+                                , tc->tilt
+                                , tc->rotation_variation
+                                , tc->distrib
+                                , tc->no_overlap
+                                , tc->picker
+                                , tc->pick_center
+                                , tc->pick_inverse_value
+                                , tc->pick_fill
+                                , tc->pick_stroke
+                                , tc->pick_no_overlap
+                                , tc->over_no_transparent
+                                , tc->over_transparent
+                                , tc->offset
+                                , tc->usepressurescale
+                                , get_pressure(tc)
+                                , tc->pick
+                                , tc->do_trace
+                                , tc->pick_to_size
+                                , tc->pick_to_presence
+                                , tc->pick_to_color
+                                , tc->pick_to_opacity
+                                , tc->invert_picked
+                                , tc->gamma_picked
+                                , tc->rand_picked)) {
+                did = true;
+            }
+        }
+
+        for(auto item : items){
+            g_assert(item != nullptr);
+            sp_object_unref(item);
+        }
+    }
+
+    return did;
+}
+
+static void sp_spray_update_area(SprayTool *tc)
+{
+    double radius = get_dilate_radius(tc);
+    Geom::Affine const sm ( Geom::Scale(radius/(1-tc->ratio), radius/(1+tc->ratio)) *
+                            Geom::Rotate(tc->tilt) *
+                            Geom::Translate(tc->getDesktop()->point()));
+
+    Geom::PathVector path = Geom::Path(Geom::Circle(0,0,1)); // Unit circle centered at origin.
+    path *= sm;
+    tc->dilate_area->set_bpath(path);
+    tc->dilate_area->show();
+}
+
+static void sp_spray_switch_mode(SprayTool *tc, gint mode, bool with_shift)
+{
+    // Select the button mode
+    auto tb = dynamic_cast<UI::Toolbar::SprayToolbar*>(tc->getDesktop()->get_toolbar_by_name("SprayToolbar"));
+
+    if(tb) {
+        tb->set_mode(mode);
+    } else {
+        std::cerr << "Could not access Spray toolbar" << std::endl;
+    }
+
+    // Need to set explicitly, because the prefs may not have changed by the previous
+    tc->mode = mode;
+    tc->update_cursor(with_shift);
+}
+
+bool SprayTool::root_handler(GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+        case GDK_ENTER_NOTIFY:
+            dilate_area->show();
+            break;
+        case GDK_LEAVE_NOTIFY:
+            dilate_area->hide();
+            break;
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                _desktop->getSelection()->restoreBackup();
+                if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+                    return TRUE;
+                }
+                this->setCloneTilerPrefs();
+                Geom::Point const motion_w(event->button.x, event->button.y);
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+                this->last_push = _desktop->dt2doc(motion_dt);
+
+                sp_spray_extinput(this, event);
+
+                set_high_motion_precision();
+                this->is_drawing = true;
+                this->is_dilating = true;
+                this->has_dilated = false;
+
+                object_set = *_desktop->getSelection();
+                if (mode == SPRAY_MODE_SINGLE_PATH) {
+                    this->single_path_output = nullptr;
+                }
+
+                sp_spray_dilate(this, motion_w, this->last_push, Geom::Point(0,0), MOD__SHIFT(event));
+
+                this->has_dilated = true;
+                ret = TRUE;
+            }
+            break;
+        case GDK_MOTION_NOTIFY: {
+            Geom::Point const motion_w(event->motion.x,
+                                     event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+            Geom::Point motion_doc(_desktop->dt2doc(motion_dt));
+            sp_spray_extinput(this, event);
+
+            // Draw the dilating cursor
+            double radius = get_dilate_radius(this);
+            Geom::Affine const sm (Geom::Scale(radius/(1-this->ratio), radius/(1+this->ratio)) *
+                                   Geom::Rotate(this->tilt) *
+                                   Geom::Translate(_desktop->w2d(motion_w)));
+
+            Geom::PathVector path = Geom::Path(Geom::Circle(0, 0, 1)); // Unit circle centered at origin.
+            path *= sm;
+            this->dilate_area->set_bpath(path);
+            this->dilate_area->show();
+
+            guint num = 0;
+            if (!_desktop->selection->isEmpty()) {
+                num = (guint)boost::distance(_desktop->selection->items());
+            }
+            if (num == 0) {
+                this->message_context->flash(Inkscape::ERROR_MESSAGE, _("<b>Nothing selected!</b> Select objects to spray."));
+            }
+
+            // Dilating:
+            if (this->is_drawing && ( event->motion.state & GDK_BUTTON1_MASK )) {
+                sp_spray_dilate(this, motion_w, motion_doc, motion_doc - this->last_push, event->button.state & GDK_SHIFT_MASK? true : false);
+                //this->last_push = motion_doc;
+                this->has_dilated = true;
+
+                // It's slow, so prevent clogging up with events
+                gobble_motion_events(GDK_BUTTON1_MASK);
+                return TRUE;
+            }
+        }
+        break;
+        /* Spray with the scroll */
+        case GDK_SCROLL: {
+            if (event->scroll.state & GDK_BUTTON1_MASK) {
+                double temp ;
+                temp = this->population;
+                this->population = 1.0;
+                _desktop->setToolboxAdjustmentValue("population", this->population * 100);
+                Geom::Point const scroll_w(event->button.x, event->button.y);
+                Geom::Point const scroll_dt = _desktop->point();;
+
+                switch (event->scroll.direction) {
+                    case GDK_SCROLL_DOWN:
+                    case GDK_SCROLL_UP:
+                    case GDK_SCROLL_SMOOTH: {
+                        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+                            return TRUE;
+                        }
+                        this->last_push = _desktop->dt2doc(scroll_dt);
+                        sp_spray_extinput(this, event);
+                        this->is_drawing = true;
+                        this->is_dilating = true;
+                        this->has_dilated = false;
+                        if(this->is_dilating) {
+                            sp_spray_dilate(this, scroll_w, _desktop->dt2doc(scroll_dt), Geom::Point(0, 0), false);
+                        }
+                        this->has_dilated = true;
+
+                        this->population = temp;
+                        _desktop->setToolboxAdjustmentValue("population", this->population * 100);
+
+                        ret = TRUE;
+                    }
+                    break;
+                    case GDK_SCROLL_RIGHT:
+                       {} break;
+                    case GDK_SCROLL_LEFT:
+                       {} break;
+                }
+            }
+            break;
+        }
+
+        case GDK_BUTTON_RELEASE: {
+            Geom::Point const motion_w(event->button.x, event->button.y);
+            Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+            set_high_motion_precision(false);
+            this->is_drawing = false;
+
+            if (this->is_dilating && event->button.button == 1) {
+                if (!this->has_dilated) {
+                    // If we did not rub, do a light tap
+                    this->pressure = 0.03;
+                    sp_spray_dilate(this, motion_w, _desktop->dt2doc(motion_dt), Geom::Point(0,0), MOD__SHIFT(event));
+                }
+                this->is_dilating = false;
+                this->has_dilated = false;
+                switch (this->mode) {
+                    case SPRAY_MODE_COPY:
+                        DocumentUndo::done(_desktop->getDocument(), _("Spray with copies"), INKSCAPE_ICON("tool-spray"));
+                        break;
+                    case SPRAY_MODE_CLONE:
+                        DocumentUndo::done(_desktop->getDocument(), _("Spray with clones"), INKSCAPE_ICON("tool-spray"));
+                        break;
+                    case SPRAY_MODE_SINGLE_PATH:
+                        DocumentUndo::done(_desktop->getDocument(), _("Spray in single path"), INKSCAPE_ICON("tool-spray"));
+                        break;
+                }
+            }
+            _desktop->getSelection()->clear();
+            object_set.clear();
+            break;
+        }
+
+        case GDK_KEY_PRESS:
+            switch (get_latin_keyval (&event->key)) {
+                case GDK_KEY_j:
+                case GDK_KEY_J:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_spray_switch_mode(this, SPRAY_MODE_COPY, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_k:
+                case GDK_KEY_K:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_spray_switch_mode(this, SPRAY_MODE_CLONE, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+#ifdef ENABLE_SPRAY_MODE_SINGLE_PATH
+                case GDK_KEY_l:
+                case GDK_KEY_L:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_spray_switch_mode(this, SPRAY_MODE_SINGLE_PATH, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+#endif
+                case GDK_KEY_Up:
+                case GDK_KEY_KP_Up:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->population += 0.01;
+                        if (this->population > 1.0) {
+                            this->population = 1.0;
+                        }
+                        _desktop->setToolboxAdjustmentValue("spray-population", this->population * 100);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Down:
+                case GDK_KEY_KP_Down:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->population -= 0.01;
+                        if (this->population < 0.0) {
+                            this->population = 0.0;
+                        }
+                        _desktop->setToolboxAdjustmentValue("spray-population", this->population * 100);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Right:
+                case GDK_KEY_KP_Right:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->width += 0.01;
+                        if (this->width > 1.0) {
+                            this->width = 1.0;
+                        }
+                        // The same spinbutton is for alt+x
+                        _desktop->setToolboxAdjustmentValue("spray-width", this->width * 100);
+                        sp_spray_update_area(this);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Left:
+                case GDK_KEY_KP_Left:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->width -= 0.01;
+                        if (this->width < 0.01) {
+                            this->width = 0.01;
+                        }
+                        _desktop->setToolboxAdjustmentValue("spray-width", this->width * 100);
+                        sp_spray_update_area(this);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Home:
+                case GDK_KEY_KP_Home:
+                    this->width = 0.01;
+                    _desktop->setToolboxAdjustmentValue("spray-width", this->width * 100);
+                    sp_spray_update_area(this);
+                    ret = TRUE;
+                    break;
+                case GDK_KEY_End:
+                case GDK_KEY_KP_End:
+                    this->width = 1.0;
+                    _desktop->setToolboxAdjustmentValue("spray-width", this->width * 100);
+                    sp_spray_update_area(this);
+                    ret = TRUE;
+                    break;
+                case GDK_KEY_x:
+                case GDK_KEY_X:
+                    if (MOD__ALT_ONLY(event)) {
+                        _desktop->setToolboxFocusTo("spray-width");
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                    this->update_cursor(true);
+                    break;
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                    break;
+                case GDK_KEY_Delete:
+                case GDK_KEY_KP_Delete:
+                case GDK_KEY_BackSpace:
+                    ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+
+        case GDK_KEY_RELEASE: {
+            Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+            switch (get_latin_keyval(&event->key)) {
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                    this->update_cursor(false);
+                    break;
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                    sp_spray_switch_mode (this, prefs->getInt("/tools/spray/mode"), MOD__SHIFT(event));
+                    this->message_context->clear();
+                    break;
+                default:
+                    sp_spray_switch_mode (this, prefs->getInt("/tools/spray/mode"), MOD__SHIFT(event));
+                    break;
+            }
+        }
+
+        default:
+            break;
+    }
+
+    if (!ret) {
+//        if ((SP_EVENT_CONTEXT_CLASS(sp_spray_context_parent_class))->root_handler) {
+//            ret = (SP_EVENT_CONTEXT_CLASS(sp_spray_context_parent_class))->root_handler(event_context, event);
+//        }
+        ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
+
diff --git a/src/ui/tools/spray-tool.h b/src/ui/tools/spray-tool.h
new file mode 100644
index 0000000..8216e2d
--- /dev/null
+++ b/src/ui/tools/spray-tool.h
@@ -0,0 +1,147 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_SPRAY_CONTEXT_H__
+#define __SP_SPRAY_CONTEXT_H__
+
+/*
+ * Spray Tool
+ *
+ * Authors:
+ *   Pierre-Antoine MARC
+ *   Pierre CACLIN
+ *   Aurel-Aimé MARMION
+ *   Julien LERAY
+ *   Benoît LAVORATA
+ *   Vincent MONTAGNE
+ *   Pierre BARBRY-BLOT
+ *   Jabiertxo ARRAIZA
+ *   Adrian Boguszewski
+ *
+ * Copyright (C) 2009 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <2geom/point.h>
+#include "ui/tools/tool-base.h"
+#include "object/object-set.h"
+
+#define SP_SPRAY_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::SprayTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_SPRAY_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::SprayTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+  class CanvasItemBpath;
+  namespace UI {
+      namespace Dialog {
+          class Dialog;
+      }
+  }
+}
+
+
+#define SAMPLING_SIZE 8        /* fixme: ?? */
+
+#define TC_MIN_PRESSURE      0.0
+#define TC_MAX_PRESSURE      1.0
+#define TC_DEFAULT_PRESSURE  0.35
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+enum {
+    SPRAY_MODE_COPY,
+    SPRAY_MODE_CLONE,
+    SPRAY_MODE_SINGLE_PATH,
+    SPRAY_MODE_ERASER,
+    SPRAY_OPTION,
+};
+
+class SprayTool : public ToolBase {
+public:
+    SprayTool(SPDesktop *desktop);
+    ~SprayTool() override;
+
+    //ToolBase event_context;
+    /* extended input data */
+    gdouble pressure;
+
+    /* attributes */
+    bool dragging;           /* mouse state: mouse is dragging */
+    bool usepressurewidth;
+    bool usepressurepopulation;
+    bool usepressurescale;
+    bool usetilt;
+    bool usetext;
+
+    double width;
+    double ratio;
+    double tilt;
+    double rotation_variation;
+    double population;
+    double scale_variation;
+    double scale;
+    double mean;
+    double standard_deviation;
+
+    gint distrib;
+
+    gint mode;
+
+    bool is_drawing;
+
+    bool is_dilating;
+    bool has_dilated;
+    Geom::Point last_push;
+    Inkscape::CanvasItemBpath *dilate_area;
+    bool no_overlap;
+    bool picker;
+    bool pick_center;
+    bool pick_inverse_value;
+    bool pick_fill;
+    bool pick_stroke;
+    bool pick_no_overlap;
+    bool over_transparent;
+    bool over_no_transparent;
+    double offset;
+    int pick;
+    bool do_trace;
+    bool pick_to_size;
+    bool pick_to_presence;
+    bool pick_to_color;
+    bool pick_to_opacity;
+    bool invert_picked;
+    double gamma_picked;
+    double rand_picked;
+    sigc::connection style_set_connection;
+
+    void set(const Inkscape::Preferences::Entry& val) override;
+    virtual void setCloneTilerPrefs();
+    bool root_handler(GdkEvent* event) override;
+    void update_cursor(bool /*with_shift*/);
+
+    ObjectSet* objectSet() {
+        return &object_set;
+    }
+    SPItem* single_path_output = nullptr;
+
+private:
+    ObjectSet object_set;
+};
+
+}
+}
+}
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
+
diff --git a/src/ui/tools/star-tool.cpp b/src/ui/tools/star-tool.cpp
new file mode 100644
index 0000000..bbdd9cb
--- /dev/null
+++ b/src/ui/tools/star-tool.cpp
@@ -0,0 +1,430 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Star drawing context
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2001-2002 Mitsuru Oka
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstring>
+#include <string>
+
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include "star-tool.h"
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "message-context.h"
+#include "selection.h"
+
+#include "include/macros.h"
+
+#include "object/sp-namedview.h"
+#include "object/sp-star.h"
+
+#include "ui/icon-names.h"
+#include "ui/shape-editor.h"
+
+#include "xml/node-event-vector.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+StarTool::StarTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/shapes/star", "star.svg")
+    , star(nullptr)
+    , magnitude(5)
+    , proportion(0.5)
+    , isflatsided(false)
+    , rounded(0)
+    , randomized(0)
+{
+    sp_event_context_read(this, "isflatsided");
+    sp_event_context_read(this, "magnitude");
+    sp_event_context_read(this, "proportion");
+    sp_event_context_read(this, "rounded");
+    sp_event_context_read(this, "randomized");
+
+    this->shape_editor = new ShapeEditor(desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item) {
+        this->shape_editor->set_item(item);
+    }
+
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    this->sel_changed_connection.disconnect();
+
+    this->sel_changed_connection = selection->connectChanged(sigc::mem_fun(this, &StarTool::selection_changed));
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/shapes/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/shapes/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+StarTool::~StarTool() {
+    ungrabCanvasEvents();
+
+    this->finishItem();
+    this->sel_changed_connection.disconnect();
+
+    this->enableGrDrag(false);
+
+    delete this->shape_editor;
+    this->shape_editor = nullptr;
+
+    /* fixme: This is necessary because we do not grab */
+    if (this->star) {
+    	this->finishItem();
+    }
+}
+
+/**
+ * Callback that processes the "changed" signal on the selection;
+ * destroys old and creates new knotholder.
+ *
+ * @param  selection Should not be NULL.
+ */
+void StarTool::selection_changed(Inkscape::Selection* selection) {
+    g_assert (selection != nullptr);
+
+    this->shape_editor->unset_item();
+    this->shape_editor->set_item(selection->singleItem());
+}
+
+
+void StarTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "magnitude") {
+        this->magnitude = CLAMP(val.getInt(5), this->isflatsided ? 3 : 2, 1024);
+    } else if (path == "proportion") {
+        this->proportion = CLAMP(val.getDouble(0.5), 0.01, 2.0);
+    } else if (path == "isflatsided") {
+        this->isflatsided = val.getBool();
+    } else if (path == "rounded") {
+        this->rounded = val.getDouble();
+    } else if (path == "randomized") {
+        this->randomized = val.getDouble();
+    }
+}
+
+bool StarTool::root_handler(GdkEvent* event) {
+    static bool dragging;
+
+    Inkscape::Selection *selection = _desktop->getSelection();
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    this->tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if (event->button.button == 1) {
+            dragging = true;
+
+            this->center = this->setup_for_drag_start(event);
+
+            /* Snap center */
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop, true);
+            m.freeSnapReturnByRef(this->center, Inkscape::SNAPSOURCE_NODE_HANDLE);
+            m.unSetup();
+
+            grabCanvasEvents();
+            ret = TRUE;
+        }
+        break;
+
+    case GDK_MOTION_NOTIFY:
+        if (dragging && (event->motion.state & GDK_BUTTON1_MASK)) {
+            if ( this->within_tolerance
+                 && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                 && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                break; // do not drag if we're within tolerance from origin
+            }
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to draw, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            this->within_tolerance = false;
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+            this->drag(motion_dt, event->motion.state);
+
+            gobble_motion_events(GDK_BUTTON1_MASK);
+
+            ret = TRUE;
+        } else if (!this->sp_event_context_knot_mouseover()) {
+            SnapManager &m = _desktop->namedview->snap_manager;
+            m.setup(_desktop);
+
+            Geom::Point const motion_w(event->motion.x, event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+
+            m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_NODE_HANDLE));
+            m.unSetup();
+        }
+        break;
+    case GDK_BUTTON_RELEASE:
+        this->xp = this->yp = 0;
+
+        if (event->button.button == 1) {
+            dragging = false;
+
+            this->discard_delayed_snap_event();
+
+            if (!this->within_tolerance) {
+                // we've been dragging, finish the star
+                this->finishItem();
+            } else if (this->item_to_select) {
+                // no dragging, select clicked item if any
+                if (event->button.state & GDK_SHIFT_MASK) {
+                    selection->toggle(this->item_to_select);
+                } else {
+                    selection->set(this->item_to_select);
+                }
+            } else {
+                // click in an empty space
+                selection->clear();
+            }
+
+            this->item_to_select = nullptr;
+            ret = TRUE;
+            ungrabCanvasEvents();
+        }
+        break;
+
+    case GDK_KEY_PRESS:
+        switch (get_latin_keyval(&event->key)) {
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt (at least on my machine)
+        case GDK_KEY_Meta_R:
+            sp_event_show_modifier_tip(this->defaultMessageContext(), event,
+                                       _("<b>Ctrl</b>: snap angle; keep rays radial"),
+                                       nullptr,
+                                       nullptr);
+            break;
+
+        case GDK_KEY_x:
+        case GDK_KEY_X:
+            if (MOD__ALT_ONLY(event)) {
+                _desktop->setToolboxFocusTo("altx-star");
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Escape:
+        	if (dragging) {
+        		dragging = false;
+        		this->discard_delayed_snap_event();
+        		// if drawing, cancel, otherwise pass it up for deselecting
+        		this->cancel();
+        		ret = TRUE;
+        	}
+        	break;
+
+        case GDK_KEY_space:
+            if (dragging) {
+                ungrabCanvasEvents();
+
+                dragging = false;
+
+                this->discard_delayed_snap_event();
+
+                if (!this->within_tolerance) {
+                    // we've been dragging, finish the star
+                    this->finishItem();
+                }
+                // do not return true, so that space would work switching to selector
+            }
+            break;
+
+        case GDK_KEY_Delete:
+        case GDK_KEY_KP_Delete:
+        case GDK_KEY_BackSpace:
+            ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    case GDK_KEY_RELEASE:
+        switch (get_latin_keyval (&event->key)) {
+        case GDK_KEY_Alt_L:
+        case GDK_KEY_Alt_R:
+        case GDK_KEY_Control_L:
+        case GDK_KEY_Control_R:
+        case GDK_KEY_Shift_L:
+        case GDK_KEY_Shift_R:
+        case GDK_KEY_Meta_L:  // Meta is when you press Shift+Alt
+        case GDK_KEY_Meta_R:
+            this->defaultMessageContext()->clear();
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void StarTool::drag(Geom::Point p, guint state)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    int const snaps = prefs->getInt("/options/rotationsnapsperpi/value", 12);
+
+    if (!this->star) {
+        if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+            return;
+        }
+
+        // Create object
+        Inkscape::XML::Document *xml_doc = _desktop->doc()->getReprDoc();
+        Inkscape::XML::Node *repr = xml_doc->createElement("svg:path");
+        repr->setAttribute("sodipodi:type", "star");
+
+        // Set style
+        sp_desktop_apply_style_tool(_desktop, repr, "/tools/shapes/star", false);
+
+        this->star = SP_STAR(currentLayer()->appendChildRepr(repr));
+
+        Inkscape::GC::release(repr);
+        this->star->transform = currentLayer()->i2doc_affine().inverse();
+        this->star->updateRepr();
+    }
+
+    /* Snap corner point with no constraints */
+    SnapManager &m = _desktop->namedview->snap_manager;
+
+    m.setup(_desktop, true, this->star);
+    Geom::Point pt2g = p;
+    m.freeSnapReturnByRef(pt2g, Inkscape::SNAPSOURCE_NODE_HANDLE);
+    m.unSetup();
+
+    Geom::Point const p0 = _desktop->dt2doc(this->center);
+    Geom::Point const p1 = _desktop->dt2doc(pt2g);
+
+    double const sides = (gdouble) this->magnitude;
+    Geom::Point const d = p1 - p0;
+    Geom::Coord const r1 = Geom::L2(d);
+    double arg1 = atan2(d);
+
+    if (state & GDK_CONTROL_MASK) {
+        /* Snap angle */
+        double snaps_radian = M_PI/snaps;
+        arg1 = std::round(arg1/snaps_radian) * snaps_radian;
+    }
+
+    sp_star_position_set(this->star, this->magnitude, p0, r1, r1 * this->proportion,
+                         arg1, arg1 + M_PI / sides, this->isflatsided, this->rounded, this->randomized);
+
+    /* status text */
+    Inkscape::Util::Quantity q = Inkscape::Util::Quantity(r1, "px");
+    Glib::ustring rads = q.string(_desktop->namedview->display_units);
+    this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE,
+                               ( this->isflatsided?
+                                 _("<b>Polygon</b>: radius %s, angle %.2f&#176;; with <b>Ctrl</b> to snap angle") :
+                                 _("<b>Star</b>: radius %s, angle %.2f&#176;; with <b>Ctrl</b> to snap angle") ),
+                               rads.c_str(), arg1 * 180 / M_PI);
+}
+
+void StarTool::finishItem() {
+    this->message_context->clear();
+
+    if (this->star != nullptr) {
+        if (this->star->r[1] == 0) {
+        	// Don't allow the creating of zero sized arc, for example
+        	// when the start and and point snap to the snap grid point
+            this->cancel();
+            return;
+        }
+
+        // Set transform center, so that odd stars rotate correctly
+        // LP #462157
+        this->star->setCenter(this->center);
+        this->star->set_shape();
+        this->star->updateRepr(SP_OBJECT_WRITE_EXT);
+        // compensate stroke scaling couldn't be done in doWriteTransform
+        double const expansion = this->star->transform.descrim();
+        this->star->doWriteTransform(this->star->transform, nullptr, true);
+        this->star->adjust_stroke_width_recursive(expansion);
+
+        _desktop->getSelection()->set(this->star);
+        DocumentUndo::done(_desktop->getDocument(), _("Create star"), INKSCAPE_ICON("draw-polygon-star"));
+
+        this->star = nullptr;
+    }
+}
+
+void StarTool::cancel() {
+    _desktop->getSelection()->clear();
+    ungrabCanvasEvents();
+
+    if (this->star != nullptr) {
+        this->star->deleteObject();
+        this->star = nullptr;
+    }
+
+    this->within_tolerance = false;
+    this->xp = 0;
+    this->yp = 0;
+    this->item_to_select = nullptr;
+
+    DocumentUndo::cancel(_desktop->getDocument());
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/star-tool.h b/src/ui/tools/star-tool.h
new file mode 100644
index 0000000..4a06a42
--- /dev/null
+++ b/src/ui/tools/star-tool.h
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_STAR_CONTEXT_H__
+#define __SP_STAR_CONTEXT_H__
+
+/*
+ * Star drawing context
+ *
+ * Authors:
+ *   Mitsuru Oka <oka326@parkcity.ne.jp>
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *
+ * Copyright (C) 1999-2002 Lauris Kaplinski
+ * Copyright (C) 2001-2002 Mitsuru Oka
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <sigc++/sigc++.h>
+#include <2geom/point.h>
+#include "ui/tools/tool-base.h"
+
+class SPStar;
+
+namespace Inkscape {
+
+class Selection;
+
+namespace UI {
+namespace Tools {
+
+class StarTool : public ToolBase {
+public:
+    StarTool(SPDesktop *desktop);
+    ~StarTool() override;
+
+    void set(const Inkscape::Preferences::Entry &val) override;
+    bool root_handler(GdkEvent *event) override;
+
+private:
+    SPStar *star;
+
+    Geom::Point center;
+
+    /* Number of corners */
+    gint magnitude;
+
+    /* Outer/inner radius ratio */
+    gdouble proportion;
+
+    /* flat sides or not? */
+    bool isflatsided;
+
+    /* rounded corners ratio */
+    gdouble rounded;
+
+    // randomization
+    gdouble randomized;
+
+    sigc::connection sel_changed_connection;
+
+	void drag(Geom::Point p, guint state);
+	void finishItem();
+	void cancel();
+	void selection_changed(Inkscape::Selection* selection);
+};
+
+}
+}
+}
+
+#endif
diff --git a/src/ui/tools/text-tool.cpp b/src/ui/tools/text-tool.cpp
new file mode 100644
index 0000000..12f143e
--- /dev/null
+++ b/src/ui/tools/text-tool.cpp
@@ -0,0 +1,1933 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * TextTool
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 1999-2005 authors
+ * Copyright (C) 2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cmath>
+#include <gdk/gdkkeysyms.h>
+#include <gtkmm/clipboard.h>
+#include <glibmm/i18n.h>
+#include <glibmm/regex.h>
+
+#include "text-tool.h"
+
+#include "context-fns.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "include/macros.h"
+#include "inkscape.h"
+#include "message-context.h"
+#include "message-stack.h"
+#include "rubberband.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+#include "style.h"
+#include "text-editing.h"
+
+#include "display/control/canvas-item-curve.h"
+#include "display/control/canvas-item-quad.h"
+#include "display/control/canvas-item-rect.h"
+#include "display/control/canvas-item-bpath.h"
+#include "display/curve.h"
+
+#include "livarot/Path.h"
+#include "livarot/Shape.h"
+
+#include "object/sp-flowtext.h"
+#include "object/sp-namedview.h"
+#include "object/sp-text.h"
+#include "object/sp-textpath.h"
+#include "object/sp-rect.h"
+#include "object/sp-shape.h"
+#include "object/sp-ellipse.h"
+
+#include "ui/knot/knot-holder.h"
+#include "ui/icon-names.h"
+#include "ui/shape-editor.h"
+#include "ui/widget/canvas.h"
+#include "ui/event-debug.h"
+
+#include "xml/attribute-record.h"
+#include "xml/node-event-vector.h"
+#include "xml/sp-css-attr.h"
+
+using Inkscape::DocumentUndo;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static void sp_text_context_validate_cursor_iterators(TextTool *tc);
+static void sp_text_context_update_cursor(TextTool *tc, bool scroll_to_see = true);
+static void sp_text_context_update_text_selection(TextTool *tc);
+static gint sp_text_context_timeout(TextTool *tc);
+static void sp_text_context_forget_text(TextTool *tc);
+
+static gint sptc_focus_in(GtkWidget *widget, GdkEventFocus *event, TextTool *tc);
+static gint sptc_focus_out(GtkWidget *widget, GdkEventFocus *event, TextTool *tc);
+static void sptc_commit(GtkIMContext *imc, gchar *string, TextTool *tc);
+
+TextTool::TextTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/text", "text.svg")
+{
+    GtkSettings* settings = gtk_settings_get_default();
+    gint timeout = 0;
+    g_object_get( settings, "gtk-cursor-blink-time", &timeout, nullptr );
+
+    if (timeout < 0) {
+        timeout = 200;
+    } else {
+        timeout /= 2;
+    }
+
+    cursor = new Inkscape::CanvasItemCurve(desktop->getCanvasControls());
+    cursor->set_stroke(0x000000ff);
+    cursor->hide();
+
+    // The rectangle box tightly wrapping text object when selected or under cursor.
+    indicator = new Inkscape::CanvasItemRect(desktop->getCanvasControls());
+    indicator->set_stroke(0x0000ff7f);
+    indicator->set_shadow(0xffffff7f, 1);
+    indicator->hide();
+
+    // The shape that the text is flowing into
+    frame = new Inkscape::CanvasItemBpath(desktop->getCanvasControls());
+    frame->set_fill(0x00 /* zero alpha */, SP_WIND_RULE_NONZERO);
+    frame->set_stroke(0x0000ff7f);
+    frame->hide();
+
+    // A second frame for showing the padding of the above frame
+    padding_frame = new Inkscape::CanvasItemBpath(desktop->getCanvasControls());
+    padding_frame->set_fill(0x00 /* zero alpha */, SP_WIND_RULE_NONZERO);
+    padding_frame->set_stroke(0xccccccdf);
+    padding_frame->hide();
+
+    this->timeout = g_timeout_add(timeout, (GSourceFunc) sp_text_context_timeout, this);
+
+    this->imc = gtk_im_multicontext_new();
+    if (this->imc) {
+        GtkWidget *canvas = GTK_WIDGET(desktop->getCanvas()->gobj());
+
+        /* im preedit handling is very broken in inkscape for
+         * multi-byte characters.  See bug 1086769.
+         * We need to let the IM handle the preediting, and
+         * just take in the characters when they're finished being
+         * entered.
+         */
+        gtk_im_context_set_use_preedit(this->imc, FALSE);
+        gtk_im_context_set_client_window(this->imc, 
+            gtk_widget_get_window (canvas));
+
+        g_signal_connect(G_OBJECT(canvas), "focus_in_event", G_CALLBACK(sptc_focus_in), this);
+        g_signal_connect(G_OBJECT(canvas), "focus_out_event", G_CALLBACK(sptc_focus_out), this);
+        g_signal_connect(G_OBJECT(this->imc), "commit", G_CALLBACK(sptc_commit), this);
+
+        if (gtk_widget_has_focus(canvas)) {
+            sptc_focus_in(canvas, nullptr, this);
+        }
+    }
+
+    this->shape_editor = new ShapeEditor(desktop);
+
+    SPItem *item = desktop->getSelection()->singleItem();
+    if (item && (SP_IS_FLOWTEXT(item) || SP_IS_TEXT(item))) {
+        this->shape_editor->set_item(item);
+    }
+
+    this->sel_changed_connection = _desktop->getSelection()->connectChangedFirst(
+        sigc::mem_fun(*this, &TextTool::_selectionChanged)
+    );
+    this->sel_modified_connection = _desktop->getSelection()->connectModifiedFirst(
+        sigc::mem_fun(*this, &TextTool::_selectionModified)
+    );
+    this->style_set_connection = _desktop->connectSetStyle(
+        sigc::mem_fun(*this, &TextTool::_styleSet)
+    );
+    this->style_query_connection = _desktop->connectQueryStyle(
+        sigc::mem_fun(*this, &TextTool::_styleQueried)
+    );
+
+    _selectionChanged(desktop->getSelection());
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/text/selcue")) {
+        this->enableSelectionCue();
+    }
+    if (prefs->getBool("/tools/text/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+TextTool::~TextTool()
+{
+    if (_desktop) {
+        sp_signal_disconnect_by_data(_desktop->getCanvas()->gobj(), this);
+    }
+
+    this->enableGrDrag(false);
+
+    this->style_set_connection.disconnect();
+    this->style_query_connection.disconnect();
+    this->sel_changed_connection.disconnect();
+    this->sel_modified_connection.disconnect();
+
+    sp_text_context_forget_text(SP_TEXT_CONTEXT(this));
+
+    if (this->imc) {
+        g_object_unref(G_OBJECT(this->imc));
+        this->imc = nullptr;
+    }
+
+    if (this->timeout) {
+        g_source_remove(this->timeout);
+        this->timeout = 0;
+    }
+
+    if (cursor) {
+        delete cursor;
+        cursor = nullptr;
+    }
+
+    if (this->indicator) {
+        delete indicator;
+        this->indicator = nullptr;
+    }
+
+    if (this->frame) {
+        delete frame;
+        this->frame = nullptr;
+    }
+
+    if (this->padding_frame) {
+        delete padding_frame;
+        this->padding_frame = nullptr;
+    }
+
+    for (auto & text_selection_quad : text_selection_quads) {
+        text_selection_quad->hide();
+        delete text_selection_quad;
+    }
+    text_selection_quads.clear();
+
+    delete this->shape_editor;
+    this->shape_editor = nullptr;
+
+    ungrabCanvasEvents();
+
+    Inkscape::Rubberband::get(_desktop)->stop();
+}
+
+void TextTool::deleteSelected()
+{
+    Inkscape::UI::Tools::sp_text_delete_selection(_desktop->event_context);
+    DocumentUndo::done(_desktop->getDocument(), _("Delete text"), INKSCAPE_ICON("draw-text"));
+}
+
+bool TextTool::item_handler(SPItem* item, GdkEvent* event) {
+    SPItem *item_ungrouped;
+
+    gint ret = FALSE;
+    sp_text_context_validate_cursor_iterators(this);
+    Inkscape::Text::Layout::iterator old_start = this->text_sel_start;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                // this var allow too much lees subbselection queries
+                // reducing it to cursor iteracion, mouseup and down
+                // find out clicked item, disregarding groups
+                item_ungrouped = _desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE);
+                if (SP_IS_TEXT(item_ungrouped) || SP_IS_FLOWTEXT(item_ungrouped)) {
+                    _desktop->getSelection()->set(item_ungrouped);
+                    if (this->text) {
+                        // find out click point in document coordinates
+                        Geom::Point p = _desktop->w2d(Geom::Point(event->button.x, event->button.y));
+                        // set the cursor closest to that point
+                        if (event->button.state & GDK_SHIFT_MASK) {
+                            this->text_sel_start = old_start;
+                            this->text_sel_end = sp_te_get_position_by_coords(this->text, p);
+                        } else {
+                            this->text_sel_start = this->text_sel_end = sp_te_get_position_by_coords(this->text, p);
+                        }
+                        // update display
+                        sp_text_context_update_cursor(this);
+                        sp_text_context_update_text_selection(this);
+                        this->dragging = 1;
+                    }
+                    ret = TRUE;
+                }
+            }
+            break;
+        case GDK_2BUTTON_PRESS:
+            if (event->button.button == 1 && this->text && this->dragging) {
+                Inkscape::Text::Layout const *layout = te_get_layout(this->text);
+                if (layout) {
+                    if (!layout->isStartOfWord(this->text_sel_start))
+                        this->text_sel_start.prevStartOfWord();
+                    if (!layout->isEndOfWord(this->text_sel_end))
+                        this->text_sel_end.nextEndOfWord();
+                    sp_text_context_update_cursor(this);
+                    sp_text_context_update_text_selection(this);
+                    this->dragging = 2;
+                    ret = TRUE;
+                }
+            }
+            break;
+        case GDK_3BUTTON_PRESS:
+            if (event->button.button == 1 && this->text && this->dragging) {
+                this->text_sel_start.thisStartOfLine();
+                this->text_sel_end.thisEndOfLine();
+                sp_text_context_update_cursor(this);
+                sp_text_context_update_text_selection(this);
+                this->dragging = 3;
+                ret = TRUE;
+            }
+            break;
+        case GDK_BUTTON_RELEASE:
+            if (event->button.button == 1 && this->dragging) {
+                this->dragging = 0;
+                this->discard_delayed_snap_event();
+                ret = TRUE;
+                _desktop->emit_text_cursor_moved(this, this);
+            }
+            break;
+        case GDK_MOTION_NOTIFY:
+            break;
+        default:
+            break;
+    }
+
+    if (!ret) {
+        ret = ToolBase::item_handler(item, event);
+    }
+
+    return ret;
+}
+
+static void sp_text_context_setup_text(TextTool *tc)
+{
+    SPDesktop *desktop = tc->getDesktop();
+
+    /* Create <text> */
+    Inkscape::XML::Document *xml_doc = desktop->doc()->getReprDoc();
+    Inkscape::XML::Node *rtext = xml_doc->createElement("svg:text");
+    rtext->setAttribute("xml:space", "preserve"); // we preserve spaces in the text objects we create
+
+    /* Set style */
+    sp_desktop_apply_style_tool(desktop, rtext, "/tools/text", true);
+
+    rtext->setAttributeSvgDouble("x", tc->pdoc[Geom::X]);
+    rtext->setAttributeSvgDouble("y", tc->pdoc[Geom::Y]);
+
+    /* Create <tspan> */
+    Inkscape::XML::Node *rtspan = xml_doc->createElement("svg:tspan");
+    rtspan->setAttribute("sodipodi:role", "line"); // otherwise, why bother creating the tspan?
+    rtext->addChild(rtspan, nullptr);
+    Inkscape::GC::release(rtspan);
+
+    /* Create TEXT */
+    Inkscape::XML::Node *rstring = xml_doc->createTextNode("");
+    rtspan->addChild(rstring, nullptr);
+    Inkscape::GC::release(rstring);
+    SPItem *text_item = SP_ITEM(tc->currentLayer()->appendChildRepr(rtext));
+    /* fixme: Is selection::changed really immediate? */
+    /* yes, it's immediate .. why does it matter? */
+    desktop->getSelection()->set(text_item);
+    Inkscape::GC::release(rtext);
+    text_item->transform = tc->currentLayer()->i2doc_affine().inverse();
+
+    text_item->updateRepr();
+    text_item->doWriteTransform(text_item->transform, nullptr, true);
+    DocumentUndo::done(desktop->getDocument(), _("Create text"), INKSCAPE_ICON("draw-text"));
+}
+
+/**
+ * Insert the character indicated by tc.uni to replace the current selection,
+ * and reset tc.uni/tc.unipos to empty string.
+ *
+ * \pre tc.uni/tc.unipos non-empty.
+ */
+static void insert_uni_char(TextTool *const tc)
+{
+    g_return_if_fail(tc->unipos
+                     && tc->unipos < sizeof(tc->uni)
+                     && tc->uni[tc->unipos] == '\0');
+    unsigned int uv;
+    std::stringstream ss;
+    ss << std::hex << tc->uni;
+    ss >> uv;
+    tc->unipos = 0;
+    tc->uni[tc->unipos] = '\0';
+
+    if ( !g_unichar_isprint(static_cast<gunichar>(uv))
+         && !(g_unichar_validate(static_cast<gunichar>(uv)) && (g_unichar_type(static_cast<gunichar>(uv)) == G_UNICODE_PRIVATE_USE) ) ) {
+        // This may be due to bad input, so it goes to statusbar.
+        tc->getDesktop()->messageStack()->flash(Inkscape::ERROR_MESSAGE,
+                                                _("Non-printable character"));
+    } else {
+        if (!tc->text) { // printable key; create text if none (i.e. if nascent_object)
+            sp_text_context_setup_text(tc);
+            tc->nascent_object = false; // we don't need it anymore, having created a real <text>
+        }
+
+        gchar u[10];
+        guint const len = g_unichar_to_utf8(uv, u);
+        u[len] = '\0';
+
+        tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, u);
+        sp_text_context_update_cursor(tc);
+        sp_text_context_update_text_selection(tc);
+        DocumentUndo::done(tc->getDesktop()->getDocument(), _("Insert Unicode character"), INKSCAPE_ICON("draw-text"));
+    }
+}
+
+static void hex_to_printable_utf8_buf(char const *const ehex, char *utf8)
+{
+    unsigned int uv;
+    std::stringstream ss;
+    ss << std::hex << ehex;
+    ss >> uv;
+    if (!g_unichar_isprint((gunichar) uv)) {
+        uv = 0xfffd;
+    }
+    guint const len = g_unichar_to_utf8(uv, utf8);
+    utf8[len] = '\0';
+}
+
+static void show_curr_uni_char(TextTool *const tc)
+{
+    g_return_if_fail(tc->unipos < sizeof(tc->uni)
+                     && tc->uni[tc->unipos] == '\0');
+    if (tc->unipos) {
+        char utf8[10];
+        hex_to_printable_utf8_buf(tc->uni, utf8);
+
+        /* Status bar messages are in pango markup, so we need xml escaping. */
+        if (utf8[1] == '\0') {
+            switch(utf8[0]) {
+                case '<': strcpy(utf8, "&lt;"); break;
+                case '>': strcpy(utf8, "&gt;"); break;
+                case '&': strcpy(utf8, "&amp;"); break;
+                default: break;
+            }
+        }
+        tc->defaultMessageContext()->setF(Inkscape::NORMAL_MESSAGE,
+                                          _("Unicode (<b>Enter</b> to finish): %s: %s"), tc->uni, utf8);
+    } else {
+        tc->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("Unicode (<b>Enter</b> to finish): "));
+    }
+}
+
+bool TextTool::root_handler(GdkEvent* event) {
+
+#if EVENT_DEBUG
+    ui_dump_event(reinterpret_cast<GdkEvent *>(event), "TextTool::root_handler");
+#endif
+
+    indicator->hide();
+
+    sp_text_context_validate_cursor_iterators(this);
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (Inkscape::have_viable_layer(_desktop, _desktop->getMessageStack()) == false) {
+                    return TRUE;
+                }
+
+                // save drag origin
+                this->xp = (gint) event->button.x;
+                this->yp = (gint) event->button.y;
+                this->within_tolerance = true;
+
+                Geom::Point const button_pt(event->button.x, event->button.y);
+                Geom::Point button_dt(_desktop->w2d(button_pt));
+
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(button_dt, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                m.unSetup();
+
+                this->p0 = button_dt;
+                Inkscape::Rubberband::get(_desktop)->start(_desktop, this->p0);
+
+                grabCanvasEvents();
+
+                this->creating = true;
+
+                /* Processed */
+                return TRUE;
+            }
+            break;
+        case GDK_MOTION_NOTIFY: {
+            if (this->creating && (event->motion.state & GDK_BUTTON1_MASK)) {
+                if ( this->within_tolerance
+                     && ( abs( (gint) event->motion.x - this->xp ) < this->tolerance )
+                     && ( abs( (gint) event->motion.y - this->yp ) < this->tolerance ) ) {
+                    break; // do not drag if we're within tolerance from origin
+                }
+                // Once the user has moved farther than tolerance from the original location
+                // (indicating they intend to draw, not click), then always process the
+                // motion notify coordinates as given (no snapping back to origin)
+                this->within_tolerance = false;
+
+                Geom::Point const motion_pt(event->motion.x, event->motion.y);
+                Geom::Point p = _desktop->w2d(motion_pt);
+
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(p, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                m.unSetup();
+
+                Inkscape::Rubberband::get(_desktop)->move(p);
+                gobble_motion_events(GDK_BUTTON1_MASK);
+
+                // status text
+                Inkscape::Util::Quantity x_q = Inkscape::Util::Quantity(fabs((p - this->p0)[Geom::X]), "px");
+                Inkscape::Util::Quantity y_q = Inkscape::Util::Quantity(fabs((p - this->p0)[Geom::Y]), "px");
+                Glib::ustring xs = x_q.string(_desktop->namedview->display_units);
+                Glib::ustring ys = y_q.string(_desktop->namedview->display_units);
+                this->message_context->setF(Inkscape::IMMEDIATE_MESSAGE, _("<b>Flowed text frame</b>: %s &#215; %s"), xs.c_str(), ys.c_str());
+            } else if (!this->sp_event_context_knot_mouseover()) {
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point motion_dt(_desktop->w2d(motion_w));
+                m.preSnap(Inkscape::SnapCandidatePoint(motion_dt, Inkscape::SNAPSOURCE_OTHER_HANDLE));
+                m.unSetup();
+            }
+            if ((event->motion.state & GDK_BUTTON1_MASK) && this->dragging) {
+                Inkscape::Text::Layout const *layout = te_get_layout(this->text);
+                if (!layout)
+                    break;
+                // find out click point in document coordinates
+                Geom::Point p = _desktop->w2d(Geom::Point(event->button.x, event->button.y));
+                // set the cursor closest to that point
+                Inkscape::Text::Layout::iterator new_end = sp_te_get_position_by_coords(this->text, p);
+                if (this->dragging == 2) {
+                    // double-click dragging: go by word
+                    if (new_end < this->text_sel_start) {
+                        if (!layout->isStartOfWord(new_end))
+                            new_end.prevStartOfWord();
+                    } else if (!layout->isEndOfWord(new_end))
+                        new_end.nextEndOfWord();
+                } else if (this->dragging == 3) {
+                    // triple-click dragging: go by line
+                    if (new_end < this->text_sel_start)
+                        new_end.thisStartOfLine();
+                    else
+                        new_end.thisEndOfLine();
+                }
+                // update display
+                if (this->text_sel_end != new_end) {
+                    this->text_sel_end = new_end;
+                    sp_text_context_update_cursor(this);
+                    sp_text_context_update_text_selection(this);
+                }
+                gobble_motion_events(GDK_BUTTON1_MASK);
+                break;
+            }
+            // find out item under mouse, disregarding groups
+            SPItem *item_ungrouped =
+                _desktop->getItemAtPoint(Geom::Point(event->button.x, event->button.y), TRUE, nullptr);
+            if (SP_IS_TEXT(item_ungrouped) || SP_IS_FLOWTEXT(item_ungrouped)) {
+                Inkscape::Text::Layout const *layout = te_get_layout(item_ungrouped);
+                if (layout->inputTruncated()) {
+                    indicator->set_stroke(0xff0000ff);
+                } else {
+                    indicator->set_stroke(0x0000ff7f);
+                }
+                Geom::OptRect ibbox = item_ungrouped->desktopVisualBounds();
+                if (ibbox) {
+                    indicator->set_rect(*ibbox);
+                }
+                indicator->show();
+
+                this->set_cursor("text-insert.svg");
+                sp_text_context_update_text_selection(this);
+                if (SP_IS_TEXT(item_ungrouped)) {
+                    _desktop->event_context->defaultMessageContext()->set(
+                        Inkscape::NORMAL_MESSAGE,
+                        _("<b>Click</b> to edit the text, <b>drag</b> to select part of the text."));
+                } else {
+                    _desktop->event_context->defaultMessageContext()->set(
+                        Inkscape::NORMAL_MESSAGE,
+                        _("<b>Click</b> to edit the flowed text, <b>drag</b> to select part of the text."));
+                }
+                this->over_text = true;
+            } else {
+                // update cursor and statusbar: we are not over a text object now
+                this->set_cursor("text.svg");
+                _desktop->event_context->defaultMessageContext()->clear();
+                this->over_text = false;
+            }
+        } break;
+
+        case GDK_BUTTON_RELEASE:
+            if (event->button.button == 1) {
+                this->discard_delayed_snap_event();
+
+                Geom::Point p1 = _desktop->w2d(Geom::Point(event->button.x, event->button.y));
+
+                SnapManager &m = _desktop->namedview->snap_manager;
+                m.setup(_desktop);
+                m.freeSnapReturnByRef(p1, Inkscape::SNAPSOURCE_NODE_HANDLE);
+                m.unSetup();
+
+                ungrabCanvasEvents();
+
+                Inkscape::Rubberband::get(_desktop)->stop();
+
+                if (this->creating && this->within_tolerance) {
+                    /* Button 1, set X & Y & new item */
+                    _desktop->getSelection()->clear();
+                    this->pdoc = _desktop->dt2doc(p1);
+                    this->show = TRUE;
+                    this->phase = true;
+                    this->nascent_object = true; // new object was just created
+
+                    /* Cursor */
+                    cursor->show();
+                    // Cursor height is defined by the new text object's font size; it needs to be set
+                    // artificially here, for the text object does not exist yet:
+                    double cursor_height = sp_desktop_get_font_size_tool(_desktop);
+                    auto const y_dir = _desktop->yaxisdir();
+                    Geom::Point const cursor_size(0, y_dir * cursor_height);
+                    cursor->set_coords(p1, p1 - cursor_size);
+                    if (this->imc) {
+                        GdkRectangle im_cursor;
+                        Geom::Point const top_left = _desktop->get_display_area().corner(0);
+                        Geom::Point const im_d0 = _desktop->d2w(p1 - top_left);
+                        Geom::Point const im_d1 = _desktop->d2w(p1 - cursor_size - top_left);
+                        Geom::Rect const im_rect(im_d0, im_d1);
+                        im_cursor.x = (int) floor(im_rect.left());
+                        im_cursor.y = (int) floor(im_rect.top());
+                        im_cursor.width = (int) floor(im_rect.width());
+                        im_cursor.height = (int) floor(im_rect.height());
+                        gtk_im_context_set_cursor_location(this->imc, &im_cursor);
+                    }
+                    this->message_context->set(Inkscape::NORMAL_MESSAGE, _("Type text; <b>Enter</b> to start new line.")); // FIXME:: this is a copy of a string from _update_cursor below, do not desync
+
+                    this->within_tolerance = false;
+                } else if (this->creating) {
+                    double cursor_height = sp_desktop_get_font_size_tool(_desktop);
+                    if (fabs(p1[Geom::Y] - this->p0[Geom::Y]) > cursor_height) {
+                        // otherwise even one line won't fit; most probably a slip of hand (even if bigger than tolerance)
+
+                        if (prefs->getBool("/tools/text/use_svg2", true)) {
+                            // SVG 2 text
+
+                            SPItem *text = create_text_with_rectangle (_desktop, this->p0, p1);
+
+                            _desktop->getSelection()->set(text);
+
+                        } else {
+                            // SVG 1.2 text
+
+                            SPItem *ft = create_flowtext_with_internal_frame (_desktop, this->p0, p1);
+
+                            _desktop->getSelection()->set(ft);
+                        }
+
+                        _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("Flowed text is created."));
+                        DocumentUndo::done(_desktop->getDocument(),  _("Create flowed text"), INKSCAPE_ICON("draw-text"));
+
+                    } else {
+                        _desktop->messageStack()->flash(Inkscape::ERROR_MESSAGE, _("The frame is <b>too small</b> for the current font size. Flowed text not created."));
+                    }
+                }
+                this->creating = false;
+                _desktop->emit_text_cursor_moved(this, this);
+                return TRUE;
+            }
+            break;
+        case GDK_KEY_PRESS: {
+            guint const group0_keyval = get_latin_keyval(&event->key);
+
+            if (group0_keyval == GDK_KEY_KP_Add ||
+                group0_keyval == GDK_KEY_KP_Subtract) {
+                if (!(event->key.state & GDK_MOD2_MASK)) // mod2 is NumLock; if on, type +/- keys
+                    break; // otherwise pass on keypad +/- so they can zoom
+            }
+
+            if ((this->text) || (this->nascent_object)) {
+                // there is an active text object in this context, or a new object was just created
+
+                // Input methods often use Ctrl+Shift+U for preediting (unimode).
+                // Override it so we can use our unimode.
+                bool preedit_activation = (MOD__CTRL(event) && MOD__SHIFT(event) && !MOD__ALT(event))
+                                          && (group0_keyval == GDK_KEY_U || group0_keyval == GDK_KEY_u);
+
+                if (this->unimode || !this->imc || preedit_activation
+                    || !gtk_im_context_filter_keypress(this->imc, (GdkEventKey*) event)) {
+                    // IM did not consume the key, or we're in unimode
+
+                    if (!MOD__CTRL_ONLY(event) && this->unimode) {
+                            /* TODO: ISO 14755 (section 3 Definitions) says that we should also
+                               accept the first 6 characters of alphabets other than the latin
+                               alphabet "if the Latin alphabet is not used".  The below is also
+                               reasonable (viz. hope that the user's keyboard includes latin
+                               characters and force latin interpretation -- just as we do for our
+                               keyboard shortcuts), but differs from the ISO 14755
+                               recommendation. */
+                            switch (group0_keyval) {
+                                case GDK_KEY_space:
+                                case GDK_KEY_KP_Space: {
+                                    if (this->unipos) {
+                                        insert_uni_char(this);
+                                    }
+                                    /* Stay in unimode. */
+                                    show_curr_uni_char(this);
+                                    return TRUE;
+                                }
+
+                                case GDK_KEY_BackSpace: {
+                                    g_return_val_if_fail(this->unipos < sizeof(this->uni), TRUE);
+                                    if (this->unipos) {
+                                        this->uni[--this->unipos] = '\0';
+                                    }
+                                    show_curr_uni_char(this);
+                                    return TRUE;
+                                }
+
+                                case GDK_KEY_Return:
+                                case GDK_KEY_KP_Enter: {
+                                    if (this->unipos) {
+                                        insert_uni_char(this);
+                                    }
+                                    /* Exit unimode. */
+                                    this->unimode = false;
+                                    this->defaultMessageContext()->clear();
+                                    return TRUE;
+                                }
+
+                                case GDK_KEY_Escape: {
+                                    // Cancel unimode.
+                                    this->unimode = false;
+                                    gtk_im_context_reset(this->imc);
+                                    this->defaultMessageContext()->clear();
+                                    return TRUE;
+                                }
+
+                                case GDK_KEY_Shift_L:
+                                case GDK_KEY_Shift_R:
+                                    break;
+
+                                default: {
+                                    guint32 xdigit = gdk_keyval_to_unicode(group0_keyval);
+                                    if (xdigit <= 255 && g_ascii_isxdigit(xdigit)) {
+                                        g_return_val_if_fail(this->unipos < sizeof(this->uni) - 1, TRUE);
+                                        this->uni[this->unipos++] = xdigit;
+                                        this->uni[this->unipos] = '\0';
+                                        if (this->unipos == 8) {
+                                            /* This behaviour is partly to allow us to continue to
+                                               use a fixed-length buffer for tc->uni.  Reason for
+                                               choosing the number 8 is that it's the length of
+                                               ``canonical form'' mentioned in the ISO 14755 spec.
+                                               An advantage over choosing 6 is that it allows using
+                                               backspace for typos & misremembering when entering a
+                                               6-digit number. */
+                                            insert_uni_char(this);
+                                        }
+                                        show_curr_uni_char(this);
+                                        return TRUE;
+                                    } else {
+                                        /* The intent is to ignore but consume characters that could be
+                                           typos for hex digits.  Gtk seems to ignore & consume all
+                                           non-hex-digits, and we do similar here.  Though note that some
+                                           shortcuts (like keypad +/- for zoom) get processed before
+                                           reaching this code. */
+                                        return TRUE;
+                                    }
+                                }
+                            }
+                        }
+
+                        Inkscape::Text::Layout::iterator old_start = this->text_sel_start;
+                        Inkscape::Text::Layout::iterator old_end = this->text_sel_end;
+                        bool cursor_moved = false;
+                        int screenlines = 1;
+                        if (this->text) {
+                            double spacing = sp_te_get_average_linespacing(this->text);
+                            Geom::Rect const d = _desktop->get_display_area().bounds();
+                            screenlines = (int) floor(fabs(d.min()[Geom::Y] - d.max()[Geom::Y])/spacing) - 1;
+                            if (screenlines <= 0)
+                                screenlines = 1;
+                        }
+
+                        /* Neither unimode nor IM consumed key; process text tool shortcuts */
+                        switch (group0_keyval) {
+                            case GDK_KEY_x:
+                            case GDK_KEY_X:
+                                if (MOD__ALT_ONLY(event)) {
+                                    _desktop->setToolboxFocusTo("TextFontFamilyAction_entry");
+                                    return TRUE;
+                                }
+                                break;
+                            case GDK_KEY_space:
+                                if (MOD__CTRL_ONLY(event)) {
+                                    /* No-break space */
+                                    if (!this->text) { // printable key; create text if none (i.e. if nascent_object)
+                                        sp_text_context_setup_text(this);
+                                        this->nascent_object = false; // we don't need it anymore, having created a real <text>
+                                    }
+                                    this->text_sel_start = this->text_sel_end = sp_te_replace(this->text, this->text_sel_start, this->text_sel_end, "\302\240");
+                                    sp_text_context_update_cursor(this);
+                                    sp_text_context_update_text_selection(this);
+                                    _desktop->messageStack()->flash(Inkscape::NORMAL_MESSAGE, _("No-break space"));
+                                    DocumentUndo::done(_desktop->getDocument(),  _("Insert no-break space"), INKSCAPE_ICON("draw-text"));
+                                    return TRUE;
+                                }
+                                break;
+                            case GDK_KEY_U:
+                            case GDK_KEY_u:
+                                if (MOD__CTRL_ONLY(event) || (MOD__CTRL(event) && MOD__SHIFT(event))) {
+                                    if (this->unimode) {
+                                        this->unimode = false;
+                                        this->defaultMessageContext()->clear();
+                                    } else {
+                                        this->unimode = true;
+                                        this->unipos = 0;
+                                        this->defaultMessageContext()->set(Inkscape::NORMAL_MESSAGE, _("Unicode (<b>Enter</b> to finish): "));
+                                    }
+                                    if (this->imc) {
+                                        gtk_im_context_reset(this->imc);
+                                    }
+                                    return TRUE;
+                                }
+                                break;
+                            case GDK_KEY_B:
+                            case GDK_KEY_b:
+                                if (MOD__CTRL_ONLY(event) && this->text) {
+                                    SPStyle const *style = sp_te_style_at_position(this->text, std::min(this->text_sel_start, this->text_sel_end));
+                                    SPCSSAttr *css = sp_repr_css_attr_new();
+                                    if (style->font_weight.computed == SP_CSS_FONT_WEIGHT_NORMAL
+                                        || style->font_weight.computed == SP_CSS_FONT_WEIGHT_100
+                                        || style->font_weight.computed == SP_CSS_FONT_WEIGHT_200
+                                        || style->font_weight.computed == SP_CSS_FONT_WEIGHT_300
+                                        || style->font_weight.computed == SP_CSS_FONT_WEIGHT_400)
+                                        sp_repr_css_set_property(css, "font-weight", "bold");
+                                    else
+                                        sp_repr_css_set_property(css, "font-weight", "normal");
+                                    sp_te_apply_style(this->text, this->text_sel_start, this->text_sel_end, css);
+                                    sp_repr_css_attr_unref(css);
+                                    DocumentUndo::done(_desktop->getDocument(),  _("Make bold"), INKSCAPE_ICON("draw-text"));
+                                    sp_text_context_update_cursor(this);
+                                    sp_text_context_update_text_selection(this);
+                                    return TRUE;
+                                }
+                                break;
+                            case GDK_KEY_I:
+                            case GDK_KEY_i:
+                                if (MOD__CTRL_ONLY(event) && this->text) {
+                                    SPStyle const *style = sp_te_style_at_position(this->text, std::min(this->text_sel_start, this->text_sel_end));
+                                    SPCSSAttr *css = sp_repr_css_attr_new();
+                                    if (style->font_style.computed != SP_CSS_FONT_STYLE_NORMAL)
+                                        sp_repr_css_set_property(css, "font-style", "normal");
+                                    else
+                                        sp_repr_css_set_property(css, "font-style", "italic");
+                                    sp_te_apply_style(this->text, this->text_sel_start, this->text_sel_end, css);
+                                    sp_repr_css_attr_unref(css);
+                                    DocumentUndo::done(_desktop->getDocument(),  _("Make italic"), INKSCAPE_ICON("draw-text"));
+                                    sp_text_context_update_cursor(this);
+                                    sp_text_context_update_text_selection(this);
+                                    return TRUE;
+                                }
+                                break;
+
+                            case GDK_KEY_A:
+                            case GDK_KEY_a:
+                                if (MOD__CTRL_ONLY(event) && this->text) {
+                                    Inkscape::Text::Layout const *layout = te_get_layout(this->text);
+                                    if (layout) {
+                                        this->text_sel_start = layout->begin();
+                                        this->text_sel_end = layout->end();
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        return TRUE;
+                                    }
+                                }
+                                break;
+
+                            case GDK_KEY_Return:
+                            case GDK_KEY_KP_Enter:
+                            {
+                                if (!this->text) { // printable key; create text if none (i.e. if nascent_object)
+                                    sp_text_context_setup_text(this);
+                                    this->nascent_object = false; // we don't need it anymore, having created a real <text>
+                                }
+
+                                SPText* text_element = dynamic_cast<SPText*>(text);
+                                if (text_element && (text_element->has_shape_inside() || text_element->has_inline_size())) {
+                                    // Handle new line like any other character.
+                                    this->text_sel_start = this->text_sel_end = sp_te_insert(this->text, this->text_sel_start, "\n");
+                                } else {
+                                    // Replace new line by either <tspan sodipodi:role="line" or <flowPara>.
+                                    iterator_pair enter_pair;
+                                    bool success = sp_te_delete(this->text, this->text_sel_start, this->text_sel_end, enter_pair);
+                                    (void)success; // TODO cleanup
+                                    this->text_sel_start = this->text_sel_end = enter_pair.first;
+                                    this->text_sel_start = this->text_sel_end = sp_te_insert_line(this->text, this->text_sel_start);
+                                }
+
+                                sp_text_context_update_cursor(this);
+                                sp_text_context_update_text_selection(this);
+                                DocumentUndo::done(_desktop->getDocument(),  _("New line"), INKSCAPE_ICON("draw-text"));
+                                return TRUE;
+                            }
+                            case GDK_KEY_BackSpace:
+                                if (this->text) { // if nascent_object, do nothing, but return TRUE; same for all other delete and move keys
+
+                                    bool noSelection = false;
+
+                                    if (MOD__CTRL(event)) {
+                                        this->text_sel_start = this->text_sel_end;
+                                    }
+
+                                    if (this->text_sel_start == this->text_sel_end) {
+                                        if (MOD__CTRL(event)) {
+                                            this->text_sel_start.prevStartOfWord();
+                                        } else {
+                                            this->text_sel_start.prevCursorPosition();
+                                        }
+                                        noSelection = true;
+                                    }
+
+                                    iterator_pair bspace_pair;
+                                    bool success = sp_te_delete(this->text, this->text_sel_start, this->text_sel_end, bspace_pair);
+
+                                    if (noSelection) {
+                                        if (success) {
+                                            this->text_sel_start = this->text_sel_end = bspace_pair.first;
+                                        } else { // nothing deleted
+                                            this->text_sel_start = this->text_sel_end = bspace_pair.second;
+                                        }
+                                    } else {
+                                        if (success) {
+                                            this->text_sel_start = this->text_sel_end = bspace_pair.first;
+                                        } else { // nothing deleted
+                                            this->text_sel_start = bspace_pair.first;
+                                            this->text_sel_end = bspace_pair.second;
+                                        }
+                                    }
+
+                                    sp_text_context_update_cursor(this);
+                                    sp_text_context_update_text_selection(this);
+                                    DocumentUndo::done(_desktop->getDocument(),  _("Backspace"), INKSCAPE_ICON("draw-text"));
+                                }
+                                return TRUE;
+                            case GDK_KEY_Delete:
+                            case GDK_KEY_KP_Delete:
+                                if (this->text) {
+                                    bool noSelection = false;
+
+                                    if (MOD__CTRL(event)) {
+                                        this->text_sel_start = this->text_sel_end;
+                                    }
+
+                                    if (this->text_sel_start == this->text_sel_end) {
+                                        if (MOD__CTRL(event)) {
+                                            this->text_sel_end.nextEndOfWord();
+                                        } else {
+                                            this->text_sel_end.nextCursorPosition();
+                                        }
+                                        noSelection = true;
+                                    }
+
+                                    iterator_pair del_pair;
+                                    bool success = sp_te_delete(this->text, this->text_sel_start, this->text_sel_end, del_pair);
+
+                                    if (noSelection) {
+                                        this->text_sel_start = this->text_sel_end = del_pair.first;
+                                    } else {
+                                        if (success) {
+                                            this->text_sel_start = this->text_sel_end = del_pair.first;
+                                        } else { // nothing deleted
+                                            this->text_sel_start = del_pair.first;
+                                            this->text_sel_end = del_pair.second;
+                                        }
+                                    }
+
+
+                                    sp_text_context_update_cursor(this);
+                                    sp_text_context_update_text_selection(this);
+                                    DocumentUndo::done(_desktop->getDocument(),  _("Delete"), INKSCAPE_ICON("draw-text"));
+                                }
+                                return TRUE;
+                            case GDK_KEY_Left:
+                            case GDK_KEY_KP_Left:
+                            case GDK_KEY_KP_4:
+                                if (this->text) {
+                                    if (MOD__ALT(event)) {
+                                        gint mul = 1 + gobble_key_events(
+                                            get_latin_keyval(&event->key), 0); // with any mask
+                                        if (MOD__SHIFT(event))
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(mul*-10, 0));
+                                        else
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(mul*-1, 0));
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        DocumentUndo::maybeDone(_desktop->getDocument(), "kern:left",  _("Kern to the left"), INKSCAPE_ICON("draw-text"));
+                                    } else {
+                                        if (MOD__CTRL(event))
+                                            this->text_sel_end.cursorLeftWithControl();
+                                        else
+                                            this->text_sel_end.cursorLeft();
+                                        cursor_moved = true;
+                                        break;
+                                    }
+                                }
+                                return TRUE;
+                            case GDK_KEY_Right:
+                            case GDK_KEY_KP_Right:
+                            case GDK_KEY_KP_6:
+                                if (this->text) {
+                                    if (MOD__ALT(event)) {
+                                        gint mul = 1 + gobble_key_events(
+                                            get_latin_keyval(&event->key), 0); // with any mask
+                                        if (MOD__SHIFT(event))
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(mul*10, 0));
+                                        else
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(mul*1, 0));
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        DocumentUndo::maybeDone(_desktop->getDocument(), "kern:right",  _("Kern to the right"), INKSCAPE_ICON("draw-text"));
+                                    } else {
+                                        if (MOD__CTRL(event))
+                                            this->text_sel_end.cursorRightWithControl();
+                                        else
+                                            this->text_sel_end.cursorRight();
+                                        cursor_moved = true;
+                                        break;
+                                    }
+                                }
+                                return TRUE;
+                            case GDK_KEY_Up:
+                            case GDK_KEY_KP_Up:
+                            case GDK_KEY_KP_8:
+                                if (this->text) {
+                                    if (MOD__ALT(event)) {
+                                        gint mul = 1 + gobble_key_events(
+                                            get_latin_keyval(&event->key), 0); // with any mask
+                                        if (MOD__SHIFT(event))
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(0, mul*-10));
+                                        else
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(0, mul*-1));
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        DocumentUndo::maybeDone(_desktop->getDocument(), "kern:up",  _("Kern up"), INKSCAPE_ICON("draw-text"));
+                                    } else {
+                                        if (MOD__CTRL(event))
+                                            this->text_sel_end.cursorUpWithControl();
+                                        else
+                                            this->text_sel_end.cursorUp();
+                                        cursor_moved = true;
+                                        break;
+                                    }
+                                }
+                                return TRUE;
+                            case GDK_KEY_Down:
+                            case GDK_KEY_KP_Down:
+                            case GDK_KEY_KP_2:
+                                if (this->text) {
+                                    if (MOD__ALT(event)) {
+                                        gint mul = 1 + gobble_key_events(
+                                            get_latin_keyval(&event->key), 0); // with any mask
+                                        if (MOD__SHIFT(event))
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(0, mul*10));
+                                        else
+                                            sp_te_adjust_kerning_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, Geom::Point(0, mul*1));
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        DocumentUndo::maybeDone(_desktop->getDocument(), "kern:down",  _("Kern down"), INKSCAPE_ICON("draw-text"));
+                                    } else {
+                                        if (MOD__CTRL(event))
+                                            this->text_sel_end.cursorDownWithControl();
+                                        else
+                                            this->text_sel_end.cursorDown();
+                                        cursor_moved = true;
+                                        break;
+                                    }
+                                }
+                                return TRUE;
+                            case GDK_KEY_Home:
+                            case GDK_KEY_KP_Home:
+                                if (this->text) {
+                                    if (MOD__CTRL(event))
+                                        this->text_sel_end.thisStartOfShape();
+                                    else
+                                        this->text_sel_end.thisStartOfLine();
+                                    cursor_moved = true;
+                                    break;
+                                }
+                                return TRUE;
+                            case GDK_KEY_End:
+                            case GDK_KEY_KP_End:
+                                if (this->text) {
+                                    if (MOD__CTRL(event))
+                                        this->text_sel_end.nextStartOfShape();
+                                    else
+                                        this->text_sel_end.thisEndOfLine();
+                                    cursor_moved = true;
+                                    break;
+                                }
+                                return TRUE;
+                            case GDK_KEY_Page_Down:
+                            case GDK_KEY_KP_Page_Down:
+                                if (this->text) {
+                                    this->text_sel_end.cursorDown(screenlines);
+                                    cursor_moved = true;
+                                    break;
+                                }
+                                return TRUE;
+                            case GDK_KEY_Page_Up:
+                            case GDK_KEY_KP_Page_Up:
+                                if (this->text) {
+                                    this->text_sel_end.cursorUp(screenlines);
+                                    cursor_moved = true;
+                                    break;
+                                }
+                                return TRUE;
+                            case GDK_KEY_Escape:
+                                if (this->creating) {
+                                    this->creating = false;
+                                    ungrabCanvasEvents();
+                                    Inkscape::Rubberband::get(_desktop)->stop();
+                                } else {
+                                    _desktop->getSelection()->clear();
+                                }
+                                this->nascent_object = FALSE;
+                                return TRUE;
+                            case GDK_KEY_bracketleft:
+                                if (this->text) {
+                                    if (MOD__ALT(event) || MOD__CTRL(event)) {
+                                        if (MOD__ALT(event)) {
+                                            if (MOD__SHIFT(event)) {
+                                                // FIXME: alt+shift+[] does not work, don't know why
+                                                sp_te_adjust_rotation_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, -10);
+                                            } else {
+                                                sp_te_adjust_rotation_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, -1);
+                                            }
+                                        } else {
+                                            sp_te_adjust_rotation(this->text, this->text_sel_start, this->text_sel_end, _desktop, -90);
+                                        }
+                                        DocumentUndo::maybeDone(_desktop->getDocument(), "textrot:ccw",  _("Rotate counterclockwise"), INKSCAPE_ICON("draw-text"));
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        return TRUE;
+                                    }
+                                }
+                                break;
+                            case GDK_KEY_bracketright:
+                                if (this->text) {
+                                    if (MOD__ALT(event) || MOD__CTRL(event)) {
+                                        if (MOD__ALT(event)) {
+                                            if (MOD__SHIFT(event)) {
+                                                // FIXME: alt+shift+[] does not work, don't know why
+                                                sp_te_adjust_rotation_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, 10);
+                                            } else {
+                                                sp_te_adjust_rotation_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, 1);
+                                            }
+                                        } else {
+                                            sp_te_adjust_rotation(this->text, this->text_sel_start, this->text_sel_end, _desktop, 90);
+                                        }
+                                        DocumentUndo::maybeDone(_desktop->getDocument(), "textrot:cw",  _("Rotate clockwise"), INKSCAPE_ICON("draw-text"));
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        return TRUE;
+                                    }
+                                }
+                                break;
+                            case GDK_KEY_less:
+                            case GDK_KEY_comma:
+                                if (this->text) {
+                                    if (MOD__ALT(event)) {
+                                        if (MOD__CTRL(event)) {
+                                            if (MOD__SHIFT(event))
+                                                sp_te_adjust_linespacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, -10);
+                                            else
+                                                sp_te_adjust_linespacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, -1);
+                                            DocumentUndo::maybeDone(_desktop->getDocument(), "linespacing:dec",  _("Contract line spacing"), INKSCAPE_ICON("draw-text"));
+                                        } else {
+                                            if (MOD__SHIFT(event))
+                                                sp_te_adjust_tspan_letterspacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, -10);
+                                            else
+                                                sp_te_adjust_tspan_letterspacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, -1);
+                                            DocumentUndo::maybeDone(_desktop->getDocument(), "letterspacing:dec",  _("Contract letter spacing"), INKSCAPE_ICON("draw-text"));
+                                        }
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        return TRUE;
+                                    }
+                                }
+                                break;
+                            case GDK_KEY_greater:
+                            case GDK_KEY_period:
+                                if (this->text) {
+                                    if (MOD__ALT(event)) {
+                                        if (MOD__CTRL(event)) {
+                                            if (MOD__SHIFT(event))
+                                                sp_te_adjust_linespacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, 10);
+                                            else
+                                                sp_te_adjust_linespacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, 1);
+                                            DocumentUndo::maybeDone(_desktop->getDocument(), "linespacing:inc",  _("Expand line spacing"), INKSCAPE_ICON("draw-text"));
+                                        } else {
+                                            if (MOD__SHIFT(event))
+                                                sp_te_adjust_tspan_letterspacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, 10);
+                                            else
+                                                sp_te_adjust_tspan_letterspacing_screen(this->text, this->text_sel_start, this->text_sel_end, _desktop, 1);
+                                            DocumentUndo::maybeDone(_desktop->getDocument(), "letterspacing:inc",  _("Expand letter spacing"), INKSCAPE_ICON("draw-text"));
+                                        }
+                                        sp_text_context_update_cursor(this);
+                                        sp_text_context_update_text_selection(this);
+                                        return TRUE;
+                                    }
+                                }
+                                break;
+                            default:
+                                break;
+                        }
+
+                        if (cursor_moved) {
+                            if (!MOD__SHIFT(event))
+                                this->text_sel_start = this->text_sel_end;
+                            if (old_start != this->text_sel_start || old_end != this->text_sel_end) {
+                                sp_text_context_update_cursor(this);
+                                sp_text_context_update_text_selection(this);
+                            }
+                            return TRUE;
+                        }
+
+                } else return TRUE; // return the "I took care of it" value if it was consumed by the IM
+            } else { // do nothing if there's no object to type in - the key will be sent to parent context,
+                // except up/down that are swallowed to prevent the zoom field from activation
+                if ((group0_keyval == GDK_KEY_Up    ||
+                     group0_keyval == GDK_KEY_Down  ||
+                     group0_keyval == GDK_KEY_KP_Up ||
+                     group0_keyval == GDK_KEY_KP_Down )
+                    && !MOD__CTRL_ONLY(event)) {
+                    return TRUE;
+                } else if (group0_keyval == GDK_KEY_Escape) { // cancel rubberband
+                    if (this->creating) {
+                        this->creating = false;
+                        ungrabCanvasEvents();
+                        Inkscape::Rubberband::get(_desktop)->stop();
+                    }
+                } else if ((group0_keyval == GDK_KEY_x || group0_keyval == GDK_KEY_X) && MOD__ALT_ONLY(event)) {
+                    _desktop->setToolboxFocusTo("TextFontFamilyAction_entry");
+                    return TRUE;
+                }
+            }
+            break;
+        }
+
+        case GDK_KEY_RELEASE:
+            if (!this->unimode && this->imc && gtk_im_context_filter_keypress(this->imc, (GdkEventKey*) event)) {
+                return TRUE;
+            }
+            break;
+        default:
+            break;
+    }
+
+    // if nobody consumed it so far
+//    if ((SP_EVENT_CONTEXT_CLASS(sp_text_context_parent_class))->root_handler) { // and there's a handler in parent context,
+//        return (SP_EVENT_CONTEXT_CLASS(sp_text_context_parent_class))->root_handler(event_context, event); // send event to parent
+//    } else {
+//        return FALSE; // return "I did nothing" value so that global shortcuts can be activated
+//    }
+    return ToolBase::root_handler(event);
+
+}
+
+/**
+ Attempts to paste system clipboard into the currently edited text, returns true on success
+ */
+bool sp_text_paste_inline(ToolBase *ec)
+{
+    if (!SP_IS_TEXT_CONTEXT(ec))
+        return false;
+    TextTool *tc = SP_TEXT_CONTEXT(ec);
+
+    if ((tc->text) || (tc->nascent_object)) {
+        // there is an active text object in this context, or a new object was just created
+
+        Glib::RefPtr<Gtk::Clipboard> refClipboard = Gtk::Clipboard::get();
+        Glib::ustring const clip_text = refClipboard->wait_for_text();
+
+        if (!clip_text.empty()) {
+
+            bool is_svg2 = false;
+            SPText *textitem = dynamic_cast<SPText *>(tc->text);
+            if (textitem) {
+                is_svg2 = textitem->has_shape_inside() /*|| textitem->has_inline_size()*/; // Do now since hiding messes this up.
+                textitem->hide_shape_inside();
+            }
+
+            SPFlowtext *flowtext = dynamic_cast<SPFlowtext *>(tc->text);
+            if (flowtext) {
+                flowtext->fix_overflow_flowregion(false);
+            }
+
+            // Fix for 244940
+            // The XML standard defines the following as valid characters
+            // (Extensible Markup Language (XML) 1.0 (Fourth Edition) paragraph 2.2)
+            // char ::=     #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
+            // Since what comes in off the paste buffer will go right into XML, clean
+            // the text here.
+            Glib::ustring text(clip_text);
+            Glib::ustring::iterator itr = text.begin();
+            gunichar paste_string_uchar;
+
+            while(itr != text.end())
+            {
+                paste_string_uchar = *itr;
+
+                // Make sure we don't have a control character. We should really check
+                // for the whole range above... Add the rest of the invalid cases from
+                // above if we find additional issues
+                if(paste_string_uchar >= 0x00000020 ||
+                   paste_string_uchar == 0x00000009 ||
+                   paste_string_uchar == 0x0000000A ||
+                   paste_string_uchar == 0x0000000D) {
+                    ++itr;
+                } else {
+                    itr = text.erase(itr);
+                }
+            }
+
+            if (!tc->text) { // create text if none (i.e. if nascent_object)
+                sp_text_context_setup_text(tc);
+                tc->nascent_object = false; // we don't need it anymore, having created a real <text>
+            }
+
+            // using indices is slow in ustrings. Whatever.
+            Glib::ustring::size_type begin = 0;
+            for ( ; ; ) {
+                Glib::ustring::size_type end = text.find('\n', begin);
+
+                if (end == Glib::ustring::npos || is_svg2) {
+                    // Paste everything
+                    if (begin != text.length())
+                        tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, text.substr(begin).c_str());
+                    break;
+                }
+
+                // Paste up to new line, add line, repeat.
+                tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, text.substr(begin, end - begin).c_str());
+                tc->text_sel_start = tc->text_sel_end = sp_te_insert_line(tc->text, tc->text_sel_start);
+                begin = end + 1;
+            }
+            if (textitem) {
+                textitem->show_shape_inside();
+            }
+            if (flowtext) {
+                flowtext->fix_overflow_flowregion(true);
+            }
+            DocumentUndo::done(ec->getDesktop()->getDocument(), _("Paste text"), INKSCAPE_ICON("draw-text"));
+
+            return true;
+        }
+        
+    } // FIXME: else create and select a new object under cursor!
+
+    return false;
+}
+
+/**
+ Gets the raw characters that comprise the currently selected text, converting line
+ breaks into lf characters.
+*/
+Glib::ustring sp_text_get_selected_text(ToolBase const *ec)
+{
+    if (!SP_IS_TEXT_CONTEXT(ec))
+        return "";
+    TextTool const *tc = SP_TEXT_CONTEXT(ec);
+    if (tc->text == nullptr)
+        return "";
+
+    return sp_te_get_string_multiline(tc->text, tc->text_sel_start, tc->text_sel_end);
+}
+
+SPCSSAttr *sp_text_get_style_at_cursor(ToolBase const *ec)
+{
+    if (!SP_IS_TEXT_CONTEXT(ec))
+        return nullptr;
+    TextTool const *tc = SP_TEXT_CONTEXT(ec);
+    if (tc->text == nullptr)
+        return nullptr;
+
+    SPObject const *obj = sp_te_object_at_position(tc->text, tc->text_sel_end);
+
+    if (obj) {
+        return take_style_from_item(const_cast<SPObject*>(obj));
+    }
+
+    return nullptr;
+}
+// this two functions are commented because are used on clipboard
+// and because slow the text pastinbg and usage a lot
+// and couldn't get it working properly we miss font size font style or never work
+// and user usually want paste as plain text and get the position context
+// style. Anyway I retain for further usage.
+
+/* static bool css_attrs_are_equal(SPCSSAttr const *first, SPCSSAttr const *second)
+{
+//    Inkscape::Util::List<Inkscape::XML::AttributeRecord const> attrs = first->attributeList();
+    for ( ; attrs ; attrs++) {
+        gchar const *other_attr = second->attribute(g_quark_to_string(attrs->key));
+        if (other_attr == nullptr || strcmp(attrs->value, other_attr))
+            return false;
+    }
+    attrs = second->attributeList();
+    for ( ; attrs ; attrs++) {
+        gchar const *other_attr = first->attribute(g_quark_to_string(attrs->key));
+        if (other_attr == nullptr || strcmp(attrs->value, other_attr))
+            return false;
+    }
+    return true;
+}
+
+std::vector<SPCSSAttr*> sp_text_get_selected_style(ToolBase const *ec, unsigned *k, int *b, std::vector<unsigned>
+*positions)
+{
+    std::vector<SPCSSAttr*> vec;
+    SPCSSAttr *css, *css_new;
+    TextTool *tc = SP_TEXT_CONTEXT(ec);
+    Inkscape::Text::Layout::iterator i = std::min(tc->text_sel_start, tc->text_sel_end);
+    SPObject const *obj = sp_te_object_at_position(tc->text, i);
+    if (obj) {
+        css = take_style_from_item(const_cast<SPObject*>(obj));
+    }
+    vec.push_back(css);
+    positions->push_back(0);
+    i.nextCharacter();
+    *k = 1;
+    *b = 1;
+    while (i != std::max(tc->text_sel_start, tc->text_sel_end))
+    {
+        obj = sp_te_object_at_position(tc->text, i);
+        if (obj) {
+            css_new = take_style_from_item(const_cast<SPObject*>(obj));
+        }
+        if(!css_attrs_are_equal(css, css_new))
+        {
+            vec.push_back(css_new);
+            css = sp_repr_css_attr_new();
+            sp_repr_css_merge(css, css_new);
+            positions->push_back(*k);
+            (*b)++;
+        }
+        i.nextCharacter();
+        (*k)++;
+    }
+    positions->push_back(*k);
+    return vec;
+}
+ */
+
+/**
+ Deletes the currently selected characters. Returns false if there is no
+ text selection currently.
+*/
+bool sp_text_delete_selection(ToolBase *ec)
+{
+    if (!SP_IS_TEXT_CONTEXT(ec))
+        return false;
+    TextTool *tc = SP_TEXT_CONTEXT(ec);
+    if (tc->text == nullptr)
+        return false;
+
+    if (tc->text_sel_start == tc->text_sel_end)
+        return false;
+
+    iterator_pair pair;
+    bool success = sp_te_delete(tc->text, tc->text_sel_start, tc->text_sel_end, pair);
+
+
+    if (success) {
+        tc->text_sel_start = tc->text_sel_end = pair.first;
+    } else { // nothing deleted
+        tc->text_sel_start = pair.first;
+        tc->text_sel_end = pair.second;
+    }
+
+    sp_text_context_update_cursor(tc);
+    sp_text_context_update_text_selection(tc);
+
+    return true;
+}
+
+/**
+ * \param selection Should not be NULL.
+ */
+void TextTool::_selectionChanged(Inkscape::Selection *selection)
+{
+    g_assert(selection != nullptr);
+    SPItem *item = selection->singleItem();
+
+    if (this->text && (item != this->text)) {
+        sp_text_context_forget_text(this);
+    }
+    this->text = nullptr;
+
+    shape_editor->unset_item();
+    if (SP_IS_TEXT(item) || SP_IS_FLOWTEXT(item)) {
+        shape_editor->set_item(item);
+
+        this->text = item;
+        Inkscape::Text::Layout const *layout = te_get_layout(this->text);
+        if (layout)
+            this->text_sel_start = this->text_sel_end = layout->end();
+    } else {
+        this->text = nullptr;
+    }
+
+    // we update cursor without scrolling, because this position may not be final;
+    // item_handler moves cusros to the point of click immediately
+    sp_text_context_update_cursor(this, false);
+    sp_text_context_update_text_selection(this);
+}
+
+void TextTool::_selectionModified(Inkscape::Selection */*selection*/, guint /*flags*/)
+{
+    bool scroll = !this->shape_editor->has_knotholder() ||
+                  !this->shape_editor->knotholder->is_dragging();
+    sp_text_context_update_cursor(this, scroll);
+    sp_text_context_update_text_selection(this);
+}
+
+bool TextTool::_styleSet(SPCSSAttr const *css)
+{
+    if (this->text == nullptr)
+        return false;
+    if (this->text_sel_start == this->text_sel_end)
+        return false;    // will get picked up by the parent and applied to the whole text object
+
+    sp_te_apply_style(this->text, this->text_sel_start, this->text_sel_end, css);
+
+    // This is a bandaid fix... whenever a style is changed it might cause the text layout to
+    // change which requires rewriting the 'x' and 'y' attributes of the tpsans for Inkscape
+    // multi-line text (with sodipodi:role="line"). We need to rewrite the repr after this is
+    // done. rebuldLayout() will be called a second time unnecessarily.
+    SPText* sptext = dynamic_cast<SPText*>(text);
+    if (sptext) {
+        sptext->rebuildLayout();
+        sptext->updateRepr();
+    }
+
+    DocumentUndo::done(_desktop->getDocument(), _("Set text style"), INKSCAPE_ICON("draw-text"));
+    sp_text_context_update_cursor(this);
+    sp_text_context_update_text_selection(this);
+    return true;
+}
+
+int TextTool::_styleQueried(SPStyle *style, int property)
+{
+    if (this->text == nullptr) {
+        return QUERY_STYLE_NOTHING;
+    }
+    const Inkscape::Text::Layout *layout = te_get_layout(this->text);
+    if (layout == nullptr) {
+        return QUERY_STYLE_NOTHING;
+    }
+    sp_text_context_validate_cursor_iterators(this);
+
+    std::vector<SPItem*> styles_list;
+
+    Inkscape::Text::Layout::iterator begin_it, end_it;
+    if (this->text_sel_start < this->text_sel_end) {
+        begin_it = this->text_sel_start;
+        end_it = this->text_sel_end;
+    } else {
+        begin_it = this->text_sel_end;
+        end_it = this->text_sel_start;
+    }
+    if (begin_it == end_it) {
+        if (!begin_it.prevCharacter()) {
+            end_it.nextCharacter();
+        }
+    }
+    for (Inkscape::Text::Layout::iterator it = begin_it ; it < end_it ; it.nextStartOfSpan()) {
+        SPObject *pos_obj = nullptr;
+        layout->getSourceOfCharacter(it, &pos_obj);
+        if (!pos_obj) {
+            continue;
+        }
+        if (! pos_obj->parent) // the string is not in the document anymore (deleted)
+            return 0;
+
+        if ( SP_IS_STRING(pos_obj) ) {
+           pos_obj = pos_obj->parent;   // SPStrings don't have style
+        }
+        styles_list.insert(styles_list.begin(),(SPItem*)pos_obj);
+    }
+
+    int result = sp_desktop_query_style_from_list (styles_list, style, property);
+
+    return result;
+}
+
+static void sp_text_context_validate_cursor_iterators(TextTool *tc)
+{
+    if (tc->text == nullptr)
+        return;
+    Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
+    if (layout) {     // undo can change the text length without us knowing it
+        layout->validateIterator(&tc->text_sel_start);
+        layout->validateIterator(&tc->text_sel_end);
+    }
+}
+
+static void sp_text_context_update_cursor(TextTool *tc,  bool scroll_to_see)
+{
+    // due to interruptible display, tc may already be destroyed during a display update before
+    // the cursor update (can't do both atomically, alas)
+    if (!tc->getDesktop()) return;
+    auto desktop = tc->getDesktop();
+
+    if (tc->text) {
+        Geom::Point p0, p1;
+        sp_te_get_cursor_coords(tc->text, tc->text_sel_end, p0, p1);
+        Geom::Point const d0 = p0 * tc->text->i2dt_affine();
+        Geom::Point const d1 = p1 * tc->text->i2dt_affine();
+
+        // scroll to show cursor
+        if (scroll_to_see) {
+
+            // We don't want to scroll outside the text box area (i.e. when there is hidden text)
+            // or we could end up in Timbuktu.
+            bool scroll = true;
+            if (SP_IS_TEXT(tc->text)) {
+                Geom::OptRect opt_frame = SP_TEXT(tc->text)->get_frame();
+                if (opt_frame && (!opt_frame->contains(p0))) {
+                    scroll = false;
+                }
+            } else if (SP_IS_FLOWTEXT(tc->text)) {
+                SPItem *frame = SP_FLOWTEXT(tc->text)->get_frame(nullptr); // first frame only
+                Geom::OptRect opt_frame = frame->geometricBounds();
+                if (opt_frame && (!opt_frame->contains(p0))) {
+                    scroll = false;
+                }
+            }
+
+            if (scroll) {
+                Geom::Point const center = desktop->current_center();
+                if (Geom::L2(d0 - center) > Geom::L2(d1 - center))
+                    // unlike mouse moves, here we must scroll all the way at first shot, so we override the autoscrollspeed
+                    desktop->scroll_to_point(d0, 1.0);
+                else
+                    desktop->scroll_to_point(d1, 1.0);
+            }
+        }
+
+        tc->cursor->set_coords(d0, d1);
+        tc->cursor->show();
+
+        /* fixme: ... need another transformation to get canvas widget coordinate space? */
+        if (tc->imc) {
+            GdkRectangle im_cursor = { 0, 0, 1, 1 };
+            Geom::Point const top_left = desktop->get_display_area().corner(0);
+            Geom::Point const im_d0 =    desktop->d2w(d0 - top_left);
+            Geom::Point const im_d1 =    desktop->d2w(d1 - top_left);
+            Geom::Rect const im_rect(im_d0, im_d1);
+            im_cursor.x = (int) floor(im_rect.left());
+            im_cursor.y = (int) floor(im_rect.top());
+            im_cursor.width = (int) floor(im_rect.width());
+            im_cursor.height = (int) floor(im_rect.height());
+            gtk_im_context_set_cursor_location(tc->imc, &im_cursor);
+        }
+
+        tc->show = TRUE;
+        tc->phase = true;
+
+        Inkscape::Text::Layout const *layout = te_get_layout(tc->text);
+        int const nChars = layout->iteratorToCharIndex(layout->end());
+        char const *edit_message = ngettext("Type or edit text (%d character%s); <b>Enter</b> to start new line.", "Type or edit text (%d characters%s); <b>Enter</b> to start new line.", nChars);
+        char const *edit_message_flowed = ngettext("Type or edit flowed text (%d character%s); <b>Enter</b> to start new paragraph.", "Type or edit flowed text (%d characters%s); <b>Enter</b> to start new paragraph.", nChars);
+        bool truncated = layout->inputTruncated();
+        char const *trunc = truncated ? _(" [truncated]") : "";
+
+        if (truncated) {
+            tc->frame->set_stroke(0xff0000ff);
+        } else {
+            tc->frame->set_stroke(0x0000ff7f);
+        }
+
+        std::vector<SPItem const *> shapes;
+        Shape *exclusion_shape = nullptr;
+        double padding = 0.0;
+
+        // Frame around text
+        if (SP_IS_FLOWTEXT(tc->text)) {
+            SPItem *frame = SP_FLOWTEXT(tc->text)->get_frame (nullptr); // first frame only
+            shapes.push_back(frame);
+
+            tc->message_context->setF(Inkscape::NORMAL_MESSAGE, edit_message_flowed, nChars, trunc);
+
+        } else if (auto text = dynamic_cast<SPText *>(tc->text)) {
+            if (text->style->shape_inside.set) {
+                for (auto const *href : text->style->shape_inside.hrefs) {
+                    shapes.push_back(href->getObject());
+                }
+                if (text->style->shape_padding.set) {
+                    // Calculate it here so we never show padding on FlowText or non-flowed Text (even if set)
+                    padding = text->style->shape_padding.computed;
+                }
+                if(text->style->shape_subtract.set) {
+                    // Find union of all exclusion shapes for later use
+                    exclusion_shape = text->getExclusionShape();
+                }
+                tc->message_context->setF(Inkscape::NORMAL_MESSAGE, edit_message_flowed, nChars, trunc);
+            } else {
+                for (SPObject &child : tc->text->children) {
+                    if (auto textpath = dynamic_cast<SPTextPath *>(&child)) {
+                        shapes.push_back(sp_textpath_get_path_item(textpath));
+                    }
+                }
+                tc->message_context->setF(Inkscape::NORMAL_MESSAGE, edit_message, nChars, trunc);
+            }
+        }
+
+        SPCurve curve;
+        for (auto const *shape_item : shapes) {
+            if (auto shape = dynamic_cast<SPShape const *>(shape_item)) {
+                auto c = SPCurve::copy(shape->curve());
+                if (c) {
+                    c->transform(shape->transform);
+                    curve.append(*c);
+                }
+            }
+        }
+
+        if (!curve.is_empty()) {
+            bool has_padding = std::fabs(padding) > 1e-12;
+            bool has_exlusions = exclusion_shape;
+
+            if (has_padding || has_exlusions) {
+                // Should only occur for SVG2 autoflowed text
+                // See sp-text.cpp function _buildLayoutInit()
+                Path *temp = new Path;
+                temp->LoadPathVector(curve.get_pathvector());
+
+                // Get initial shape-inside curve
+                Shape *uncross = new Shape;
+                {
+                    Shape *sh = new Shape;
+                    temp->ConvertWithBackData(0.25); // Convert to polyline
+                    temp->Fill(sh, 0);
+                    uncross->ConvertToShape(sh);
+                    delete sh;
+                }
+
+                // Get padded shape exclusion
+                if (has_padding) {
+                    Shape *pad_shape = new Shape;
+                    Path *padded = new Path;
+                    Path *padt = new Path;
+                    Shape *sh = new Shape;
+                    padt->LoadPathVector(curve.get_pathvector());
+                    padt->Outline(padded, padding, join_round, butt_straight, 20.0);
+                    padded->ConvertWithBackData(1.0); // Convert to polyline
+                    padded->Fill(sh, 0);
+                    pad_shape->ConvertToShape(sh);
+                    delete sh;
+                    delete padt;
+                    delete padded;
+
+                    Shape *copy = new Shape;
+                    copy->Booleen(uncross, pad_shape, (padding > 0.0) ? bool_op_diff : bool_op_union);
+                    delete uncross;
+                    delete pad_shape;
+                    uncross = copy;
+                }
+
+                // Remove exclusions plus margins from padding frame
+                if (exclusion_shape && exclusion_shape->hasEdges()) {
+                    Shape *copy = new Shape;
+                    copy->Booleen(uncross, const_cast<Shape*>(exclusion_shape), bool_op_diff);
+                    delete uncross;
+                    uncross = copy;
+                }
+
+                uncross->ConvertToForme(temp);
+                tc->padding_frame->set_bpath(temp->MakePathVector() * tc->text->i2dt_affine());
+                tc->padding_frame->show();
+
+                delete temp;
+                delete uncross;
+            } else {
+                tc->padding_frame->hide();
+            }
+
+            // Transform curve after doing padding.
+            curve.transform(tc->text->i2dt_affine());
+            tc->frame->set_bpath(&curve);
+            tc->frame->show();
+        } else {
+            tc->frame->hide();
+            tc->padding_frame->hide();
+        }
+
+    } else {
+        tc->cursor->hide();
+        tc->frame->hide();
+        tc->show = FALSE;
+        if (!tc->nascent_object) {
+            tc->message_context->set(Inkscape::NORMAL_MESSAGE, _("<b>Click</b> to select or create text, <b>drag</b> to create flowed text; then type.")); // FIXME: this is a copy of string from tools-switch, do not desync
+        }
+    }
+
+    desktop->emit_text_cursor_moved(tc, tc);
+}
+
+static void sp_text_context_update_text_selection(TextTool *tc)
+{
+    // due to interruptible display, tc may already be destroyed during a display update before
+    // the selection update (can't do both atomically, alas)
+    if (!tc->getDesktop()) return;
+
+    for (auto & text_selection_quad : tc->text_selection_quads) {
+        text_selection_quad->hide();
+        delete text_selection_quad;
+    }
+    tc->text_selection_quads.clear();
+
+    std::vector<Geom::Point> quads;
+    if (tc->text != nullptr)
+        quads = sp_te_create_selection_quads(tc->text, tc->text_sel_start, tc->text_sel_end, (tc->text)->i2dt_affine());
+    for (unsigned i = 0 ; i < quads.size() ; i += 4) {
+        auto quad = new CanvasItemQuad(tc->getDesktop()->getCanvasControls(), quads[i], quads[i+1], quads[i+2], quads[i+3]);
+        quad->set_fill(0x00777777); // Semi-transparent blue as Cairo cannot do inversion.
+        quad->show();
+        tc->text_selection_quads.push_back(quad);
+    }
+
+    if (tc->shape_editor != nullptr) {
+        if (tc->shape_editor->knotholder) {
+            tc->shape_editor->knotholder->update_knots();
+        }
+    }
+}
+
+static gint sp_text_context_timeout(TextTool *tc)
+{
+    if (tc->show) {
+        if (tc->phase) {
+            tc->phase = false;
+            tc->cursor->set_stroke(0x000000ff);
+        } else {
+            tc->phase = true;
+            tc->cursor->set_stroke(0xffffffff);
+        }
+        tc->cursor->show();
+    }
+
+    return TRUE;
+}
+
+static void sp_text_context_forget_text(TextTool *tc)
+{
+    if (! tc->text) return;
+    SPItem *ti = tc->text;
+    (void)ti;
+    /* We have to set it to zero,
+     * or selection changed signal messes everything up */
+    tc->text = nullptr;
+
+/* FIXME: this automatic deletion when nothing is inputted crashes the XML editor and also crashes when duplicating an empty flowtext.
+    So don't create an empty flowtext in the first place? Create it when first character is typed.
+    */
+/*
+    if ((SP_IS_TEXT(ti) || SP_IS_FLOWTEXT(ti)) && sp_te_input_is_empty(ti)) {
+        Inkscape::XML::Node *text_repr = ti->getRepr();
+        // the repr may already have been unparented
+        // if we were called e.g. as the result of
+        // an undo or the element being removed from
+        // the XML editor
+        if ( text_repr && text_repr->parent() ) {
+            sp_repr_unparent(text_repr);
+            SPDocumentUndo::done(tc->desktop->getDocument(), _("Remove empty text"), INKSCAPE_ICON("draw-text"));
+        }
+    }
+*/
+}
+
+gint sptc_focus_in(GtkWidget *widget, GdkEventFocus */*event*/, TextTool *tc)
+{
+    gtk_im_context_focus_in(tc->imc);
+    return FALSE;
+}
+
+gint sptc_focus_out(GtkWidget */*widget*/, GdkEventFocus */*event*/, TextTool *tc)
+{
+    gtk_im_context_focus_out(tc->imc);
+    return FALSE;
+}
+
+static void sptc_commit(GtkIMContext */*imc*/, gchar *string, TextTool *tc)
+{
+    if (!tc->text) {
+        sp_text_context_setup_text(tc);
+        tc->nascent_object = false; // we don't need it anymore, having created a real <text>
+    }
+
+    tc->text_sel_start = tc->text_sel_end = sp_te_replace(tc->text, tc->text_sel_start, tc->text_sel_end, string);
+    sp_text_context_update_cursor(tc);
+    sp_text_context_update_text_selection(tc);
+
+    DocumentUndo::done(tc->text->document, _("Type text"), INKSCAPE_ICON("draw-text"));
+}
+
+void sp_text_context_place_cursor (TextTool *tc, SPObject *text, Inkscape::Text::Layout::iterator where)
+{
+    tc->getDesktop()->selection->set (text);
+    tc->text_sel_start = tc->text_sel_end = where;
+    sp_text_context_update_cursor(tc);
+    sp_text_context_update_text_selection(tc);
+}
+
+void sp_text_context_place_cursor_at (TextTool *tc, SPObject *text, Geom::Point const p)
+{
+    tc->getDesktop()->selection->set (text);
+    sp_text_context_place_cursor (tc, text, sp_te_get_position_by_coords(tc->text, p));
+}
+
+Inkscape::Text::Layout::iterator *sp_text_context_get_cursor_position(TextTool *tc, SPObject *text)
+{
+    if (text != tc->text)
+        return nullptr;
+    return &(tc->text_sel_end);
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/text-tool.h b/src/ui/tools/text-tool.h
new file mode 100644
index 0000000..12a4cee
--- /dev/null
+++ b/src/ui/tools/text-tool.h
@@ -0,0 +1,121 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_TEXT_CONTEXT_H__
+#define __SP_TEXT_CONTEXT_H__
+
+/*
+ * TextTool
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *
+ * Copyright (C) 1999-2005 authors
+ * Copyright (C) 2001 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <sigc++/connection.h>
+
+#include "ui/tools/tool-base.h"
+#include <2geom/point.h>
+#include "libnrtype/Layout-TNG.h"
+
+#define SP_TEXT_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::TextTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_TEXT_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::TextTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+typedef struct _GtkIMContext GtkIMContext;
+
+namespace Inkscape {
+
+class CanvasItemCurve; // Cursor
+class CanvasItemQuad;  // Highlighted text
+class CanvasItemRect;  // Indicator, Frame
+class CanvasItemBpath;
+class Selection;
+
+namespace UI {
+namespace Tools {
+
+class TextTool : public ToolBase {
+public:
+    TextTool(SPDesktop *desktop);
+    ~TextTool() override;
+
+    sigc::connection sel_changed_connection;
+    sigc::connection sel_modified_connection;
+    sigc::connection style_set_connection;
+    sigc::connection style_query_connection;
+
+    GtkIMContext *imc = nullptr;
+
+    SPItem *text = nullptr; // the text we're editing, or NULL if none selected
+
+    /* Text item position in root coordinates */
+    Geom::Point pdoc;
+    /* Insertion point position */
+    Inkscape::Text::Layout::iterator text_sel_start;
+    Inkscape::Text::Layout::iterator text_sel_end;
+
+    gchar uni[9];
+    bool unimode = false;
+    guint unipos = 0;
+
+    // ---- On canvas editing ---
+    Inkscape::CanvasItemCurve *cursor = nullptr;
+    Inkscape::CanvasItemRect *indicator = nullptr;
+    Inkscape::CanvasItemBpath *frame = nullptr; // Highlighting flowtext shapes or textpath path
+    Inkscape::CanvasItemBpath *padding_frame = nullptr; // Highlighting flowtext padding
+    std::vector<CanvasItemQuad*> text_selection_quads;
+
+    gint timeout = 0;
+    bool show = false;
+    bool phase = false;
+    bool nascent_object = false; // true if we're clicked on canvas to put cursor,
+                                 // but no text typed yet so ->text is still NULL
+
+    bool over_text = false; // true if cursor is over a text object
+
+    guint dragging = 0;     // dragging selection over text
+    bool creating = false;  // dragging rubberband to create flowtext
+    Geom::Point p0;         // initial point if the flowtext rect
+
+    /* Preedit String */
+    gchar* preedit_string = nullptr;
+
+    bool root_handler(GdkEvent* event) override;
+    bool item_handler(SPItem* item, GdkEvent* event) override;
+    void deleteSelected();
+private:
+    void _selectionChanged(Inkscape::Selection *selection);
+    void _selectionModified(Inkscape::Selection *selection, guint flags);
+    bool _styleSet(SPCSSAttr const *css);
+    int _styleQueried(SPStyle *style, int property);
+};
+
+bool sp_text_paste_inline(ToolBase *ec);
+Glib::ustring sp_text_get_selected_text(ToolBase const *ec);
+SPCSSAttr *sp_text_get_style_at_cursor(ToolBase const *ec);
+// std::vector<SPCSSAttr*> sp_text_get_selected_style(ToolBase const *ec, unsigned *k, int *b, std::vector<unsigned>
+// *positions);
+bool sp_text_delete_selection(ToolBase *ec);
+void sp_text_context_place_cursor (TextTool *tc, SPObject *text, Inkscape::Text::Layout::iterator where);
+void sp_text_context_place_cursor_at (TextTool *tc, SPObject *text, Geom::Point const p);
+Inkscape::Text::Layout::iterator *sp_text_context_get_cursor_position(TextTool *tc, SPObject *text);
+
+}
+}
+}
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/tool-base.cpp b/src/ui/tools/tool-base.cpp
new file mode 100644
index 0000000..30e3651
--- /dev/null
+++ b/src/ui/tools/tool-base.cpp
@@ -0,0 +1,1649 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Main event handling, and related helper functions.
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Frank Felfe <innerspace@iname.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Kris De Gussem <Kris.DeGussem@gmail.com>
+ *
+ * Copyright (C) 1999-2012 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <gdk/gdkkeysyms.h>
+#include <gdkmm/display.h>
+#include <glibmm/i18n.h>
+
+#include <set>
+
+#include "desktop-events.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "file.h"
+#include "gradient-drag.h"
+#include "layer-manager.h"
+#include "message-context.h"
+#include "rubberband.h"
+#include "selcue.h"
+#include "selection-chemistry.h"
+#include "selection.h"
+
+#include "actions/actions-tools.h"
+
+#include "display/control/canvas-item-catchall.h" // Grab/Ungrab
+#include "display/control/canvas-item-rotate.h"
+#include "display/control/snap-indicator.h"
+
+#include "include/gtkmm_version.h"
+#include "include/macros.h"
+
+#include "object/sp-guide.h"
+
+#include "ui/contextmenu.h"
+#include "ui/cursor-utils.h"
+#include "ui/event-debug.h"
+#include "ui/interface.h"
+#include "ui/knot/knot.h"
+#include "ui/knot/knot-holder.h"
+#include "ui/knot/knot-ptr.h"
+#include "ui/modifiers.h"
+#include "ui/shape-editor.h"
+#include "ui/shortcuts.h"
+
+#include "ui/tool/commit-events.h"
+#include "ui/tool/control-point.h"
+#include "ui/tool/event-utils.h"
+#include "ui/tool/shape-record.h"
+#include "ui/tools/calligraphic-tool.h"
+#include "ui/tools/dropper-tool.h"
+#include "ui/tools/lpe-tool.h"
+#include "ui/tools/node-tool.h"
+#include "ui/tools/select-tool.h"
+#include "ui/tools/tool-base.h"
+#include "ui/widget/canvas.h"
+
+#include "widgets/desktop-widget.h"
+
+#include "xml/node-event-vector.h"
+
+// globals for temporary switching to selector by space
+static bool selector_toggled = FALSE;
+static Glib::ustring switch_selector_to;
+
+// globals for temporary switching to dropper by 'D'
+static bool dropper_toggled = FALSE;
+static Glib::ustring switch_dropper_to;
+
+// globals for keeping track of keyboard scroll events in order to accelerate
+static guint32 scroll_event_time = 0;
+static gdouble scroll_multiply = 1;
+static guint scroll_keyval = 0;
+
+// globals for key processing
+static bool latin_keys_group_valid = FALSE;
+static gint latin_keys_group;
+static std::set<int> latin_keys_groups;
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+static void set_event_location(SPDesktop * desktop, GdkEvent * event);
+
+ToolBase::ToolBase(SPDesktop *desktop, std::string prefs_path, std::string cursor_filename, bool uses_snap)
+    : _desktop(desktop)
+    , _prefs_path(std::move(prefs_path))
+    , _cursor_default(std::move(cursor_filename))
+    , _cursor_filename("none")
+    , _uses_snap(uses_snap)
+{
+    pref_observer = new ToolPrefObserver(_prefs_path, this);
+    Inkscape::Preferences::get()->addObserver(*(this->pref_observer));
+    this->set_cursor(_cursor_default);
+    _desktop->getCanvas()->grab_focus();
+
+    message_context = std::unique_ptr<Inkscape::MessageContext>(new Inkscape::MessageContext(desktop->messageStack()));
+
+    // Make sure no delayed snapping events are carried over after switching tools
+    // (this is only an additional safety measure against sloppy coding, because each
+    // tool should take care of this by itself)
+    discard_delayed_snap_event();
+}
+
+ToolBase::~ToolBase() {
+    this->enableSelectionCue(false);
+
+    if (this->pref_observer) {
+        delete this->pref_observer;
+    }
+
+    if (this->_delayed_snap_event) {
+        delete this->_delayed_snap_event;
+    }
+}
+
+/**
+ * Called by our pref_observer if a preference has been changed.
+ */
+void ToolBase::set(const Inkscape::Preferences::Entry& /*val*/) {
+}
+
+
+SPGroup *ToolBase::currentLayer() const
+{
+    return _desktop->layerManager().currentLayer();
+}
+
+/**
+ * Sets the current cursor to the given filename. Does not readload if not changed.
+ */
+void ToolBase::set_cursor(std::string filename)
+{
+    if (filename != _cursor_filename) {
+        _cursor_filename = filename;
+        use_tool_cursor();
+    }
+}
+
+/**
+ * Returns the Gdk Cursor for the given filename
+ *
+ * WARNING: currently this changes the window cursor, see load_svg_cursor
+ */
+Glib::RefPtr<Gdk::Cursor> ToolBase::get_cursor(Glib::RefPtr<Gdk::Window> window, std::string filename)
+{
+    bool fillHasColor   = false;
+    bool strokeHasColor = false;
+    guint32 fillColor = sp_desktop_get_color_tool(_desktop, getPrefsPath(), true, &fillHasColor);
+    guint32 strokeColor = sp_desktop_get_color_tool(_desktop, getPrefsPath(), false, &strokeHasColor);
+    double fillOpacity = fillHasColor ? sp_desktop_get_opacity_tool(_desktop, getPrefsPath(), true) : 1.0;
+    double strokeOpacity = strokeHasColor ? sp_desktop_get_opacity_tool(_desktop, getPrefsPath(), false) : 1.0;
+
+    return load_svg_cursor(window->get_display(), window, filename,
+                           fillColor, strokeColor, fillOpacity, strokeOpacity);
+}
+
+/**
+ * Uses the saved cursor, based on the saved filename.
+ */
+void ToolBase::use_tool_cursor() {
+    if (auto window = _desktop->getCanvas()->get_window()) {
+        _cursor = get_cursor(window, _cursor_filename);
+        window->set_cursor(_cursor);
+    }
+    _desktop->waiting_cursor = false;
+}
+
+/**
+ * Set the cursor to this specific one, don't remember it.
+ *
+ * If RefPtr is empty, sets the remembered cursor (reverting it)
+ */
+void ToolBase::use_cursor(Glib::RefPtr<Gdk::Cursor> cursor)
+{
+    if (auto window = _desktop->getCanvas()->get_window()) {
+        window->set_cursor(cursor ? cursor : _cursor);
+    }
+}
+
+/**
+ * Toggles current tool between active tool and selector tool.
+ * Subroutine of sp_event_context_private_root_handler().
+ */
+static void sp_toggle_selector(SPDesktop *dt) {
+
+    if (!dt->event_context) {
+        return;
+    }
+
+    if (dynamic_cast<Inkscape::UI::Tools::SelectTool *>(dt->event_context)) {
+        if (selector_toggled) {
+            set_active_tool(dt, switch_selector_to);
+            selector_toggled = false;
+        }
+    } else {
+        selector_toggled = TRUE;
+        switch_selector_to = get_active_tool(dt);
+        set_active_tool(dt, "Select");
+    }
+}
+
+/**
+ * Toggles current tool between active tool and dropper tool.
+ * Subroutine of sp_event_context_private_root_handler().
+ */
+void sp_toggle_dropper(SPDesktop *dt) {
+
+    if (!dt->event_context) {
+        return;
+    }
+
+    if (dynamic_cast<Inkscape::UI::Tools::DropperTool *>(dt->event_context)) {
+        if (dropper_toggled) {
+            set_active_tool(dt, switch_dropper_to);
+            dropper_toggled = FALSE;
+        }
+    } else {
+        dropper_toggled = TRUE;
+        switch_dropper_to = get_active_tool(dt);
+        set_active_tool(dt, "Dropper");
+    }
+}
+
+/**
+ * Calculates and keeps track of scroll acceleration.
+ * Subroutine of sp_event_context_private_root_handler().
+ */
+static gdouble accelerate_scroll(GdkEvent *event, gdouble acceleration)
+{
+    guint32 time_diff = ((GdkEventKey *) event)->time - scroll_event_time;
+
+    /* key pressed within 500ms ? (1/2 second) */
+    if (time_diff > 500 || event->key.keyval != scroll_keyval) {
+        scroll_multiply = 1; // abort acceleration
+    } else {
+        scroll_multiply += acceleration; // continue acceleration
+    }
+
+    scroll_event_time = ((GdkEventKey *) event)->time;
+    scroll_keyval = event->key.keyval;
+
+    return scroll_multiply;
+}
+
+/** Moves the selected points along the supplied unit vector according to
+ * the modifier state of the supplied event. */
+bool ToolBase::_keyboardMove(GdkEventKey const &event, Geom::Point const &dir)
+{
+    if (held_control(event)) return false;
+    unsigned num = 1 + gobble_key_events(shortcut_key(event), 0);
+    Geom::Point delta = dir * num;
+
+    if (held_shift(event)) {
+        delta *= 10;
+    }
+
+    if (held_alt(event)) {
+        delta /= _desktop->current_zoom();
+    } else {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        double nudge = prefs->getDoubleLimited("/options/nudgedistance/value", 2, 0, 1000, "px");
+        delta *= nudge;
+    }
+
+    bool moved = false;
+    if (shape_editor && shape_editor->has_knotholder()) {
+        KnotHolder * knotholder = shape_editor->knotholder;
+        if (knotholder && knotholder->knot_selected()) {
+            knotholder->transform_selected(Geom::Translate(delta));
+            moved = true;
+        }
+    } else {
+        auto nt = dynamic_cast<Inkscape::UI::Tools::NodeTool *>(_desktop->event_context);
+        if (nt) {
+            for (auto &_shape_editor : nt->_shape_editors) {
+                ShapeEditor *shape_editor = _shape_editor.second.get();
+                if (shape_editor && shape_editor->has_knotholder()) {
+                    KnotHolder * knotholder = shape_editor->knotholder;
+                    if (knotholder && knotholder->knot_selected()) {
+                        knotholder->transform_selected(Geom::Translate(delta));
+                        moved = true;
+                    }
+                }
+            }
+        }
+    }
+
+    return moved;
+}
+
+
+bool ToolBase::root_handler(GdkEvent* event) {
+
+#ifdef EVENT_DUMP
+    ui_dump_event (event, "ToolBase::root_handler");
+#endif
+
+    static Geom::Point button_w;
+    static unsigned int panning_cursor = 0;
+    static unsigned int zoom_rb = 0;
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    /// @todo REmove redundant /value in preference keys
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+    bool allow_panning = prefs->getBool("/options/spacebarpans/value");
+    gint ret = FALSE;
+
+    switch (event->type) {
+    case GDK_2BUTTON_PRESS:
+        if (panning) {
+            panning = PANNING_NONE;
+            ungrabCanvasEvents();
+            ret = TRUE;
+        } else {
+            /* sp_desktop_dialog(); */
+        }
+        break;
+
+    case GDK_BUTTON_PRESS:
+        // save drag origin
+        xp = (gint) event->button.x;
+        yp = (gint) event->button.y;
+        within_tolerance = true;
+
+        button_w = Geom::Point(event->button.x, event->button.y);
+
+        switch (event->button.button) {
+        case 1:
+            // TODO Does this make sense? Panning starts on passive mouse motion while space
+            // bar is pressed, it's not necessary to press the mouse button.
+            if (this->is_space_panning()) {
+                // When starting panning, make sure there are no snap events pending because these might disable the panning again
+                if (_uses_snap) {
+                    this->discard_delayed_snap_event();
+                }
+                panning = PANNING_SPACE_BUTTON1;
+
+                grabCanvasEvents(Gdk::KEY_RELEASE_MASK    |
+                                 Gdk::BUTTON_RELEASE_MASK |
+                                 Gdk::POINTER_MOTION_MASK );
+
+                ret = TRUE;
+            }
+            break;
+
+        case 2:
+            if ((event->button.state & GDK_CONTROL_MASK) && !_desktop->get_rotation_lock()) {
+                // On screen canvas rotation preview
+
+                // Grab background before doing anything else
+                _desktop->getCanvasRotate()->start(_desktop);
+                _desktop->getCanvasRotate()->show();
+
+                // CanvasItemRotate code takes over!
+                ungrabCanvasEvents();
+
+                _desktop->getCanvasRotate()->grab(Gdk::KEY_PRESS_MASK      |
+                                                 Gdk::KEY_RELEASE_MASK    |
+                                                 Gdk::BUTTON_RELEASE_MASK |
+                                                 Gdk::POINTER_MOTION_MASK,
+                                                 nullptr);  // Cursor is null.
+
+            } else if (event->button.state & GDK_SHIFT_MASK) {
+                zoom_rb = 2;
+            } else {
+                // When starting panning, make sure there are no snap events pending because these might disable the panning again
+                if (_uses_snap) {
+                    this->discard_delayed_snap_event();
+                }
+                panning = PANNING_BUTTON2;
+
+                grabCanvasEvents(Gdk::BUTTON_RELEASE_MASK |
+                                 Gdk::POINTER_MOTION_MASK );
+            }
+
+            ret = TRUE;
+            break;
+
+        case 3:
+            if (event->button.state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK)) {
+                // When starting panning, make sure there are no snap events pending because these might disable the panning again
+                if (_uses_snap) {
+                    this->discard_delayed_snap_event();
+                }
+                panning = PANNING_BUTTON3;
+
+                grabCanvasEvents(Gdk::BUTTON_RELEASE_MASK |
+                                 Gdk::POINTER_MOTION_MASK );
+                ret = TRUE;
+            } else if (!are_buttons_1_and_3_on(event)) {
+                this->menu_popup(event);
+                ret = TRUE;
+            }
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    case GDK_MOTION_NOTIFY:
+        if (panning) {
+            if (panning == 4 && !xp && !yp ) {
+                // <Space> + mouse panning started, save location and grab canvas
+                xp = event->motion.x;
+                yp = event->motion.y;
+                button_w = Geom::Point(event->motion.x, event->motion.y);
+
+                grabCanvasEvents(Gdk::KEY_RELEASE_MASK    |
+                                 Gdk::BUTTON_RELEASE_MASK |
+                                 Gdk::POINTER_MOTION_MASK );
+            }
+
+            if ((panning == 2 && !(event->motion.state & GDK_BUTTON2_MASK))
+                    || (panning == 1 && !(event->motion.state & GDK_BUTTON1_MASK))
+                    || (panning == 3 && !(event->motion.state & GDK_BUTTON3_MASK))) {
+                /* Gdk seems to lose button release for us sometimes :-( */
+                panning = PANNING_NONE;
+                ungrabCanvasEvents();
+                ret = TRUE;
+            } else {
+                // To fix https://bugs.launchpad.net/inkscape/+bug/1458200
+                // we increase the tolerance because no sensible data for panning
+                if (within_tolerance && (abs((gint) event->motion.x - xp)
+                        < tolerance * 3) && (abs((gint) event->motion.y - yp)
+                        < tolerance * 3)) {
+                    // do not drag if we're within tolerance from origin
+                    break;
+                }
+
+                // Once the user has moved farther than tolerance from
+                // the original location (indicating they intend to move
+                // the object, not click), then always process the motion
+                // notify coordinates as given (no snapping back to origin)
+                within_tolerance = false;
+
+                // gobble subsequent motion events to prevent "sticking"
+                // when scrolling is slow
+                gobble_motion_events(panning == 2 ? GDK_BUTTON2_MASK : (panning
+                        == 1 ? GDK_BUTTON1_MASK : GDK_BUTTON3_MASK));
+
+                if (panning_cursor == 0) {
+                    panning_cursor = 1;
+                    auto display = _desktop->getCanvas()->get_display();
+                    auto window = _desktop->getCanvas()->get_window();
+                    auto cursor = Gdk::Cursor::create(display, "move");
+                    window->set_cursor(cursor);
+                }
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const moved_w(motion_w - button_w);
+                _desktop->scroll_relative(moved_w, true); // we're still scrolling, do not redraw
+                ret = TRUE;
+            }
+        } else if (zoom_rb) {
+            if (within_tolerance && (abs((gint) event->motion.x - xp)
+                    < tolerance) && (abs((gint) event->motion.y - yp)
+                    < tolerance)) {
+                break; // do not drag if we're within tolerance from origin
+            }
+
+            // Once the user has moved farther than tolerance from the original location
+            // (indicating they intend to move the object, not click), then always process the
+            // motion notify coordinates as given (no snapping back to origin)
+            within_tolerance = false;
+
+            if (Inkscape::Rubberband::get(_desktop)->is_started()) {
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+                Inkscape::Rubberband::get(_desktop)->move(motion_dt);
+            } else {
+                // Start the box where the mouse was clicked, not where it is now
+                // because otherwise our box would be offset by the amount of tolerance.
+                Geom::Point const motion_w(xp, yp);
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+                Inkscape::Rubberband::get(_desktop)->start(_desktop, motion_dt);
+            }
+
+            if (zoom_rb == 2) {
+                gobble_motion_events(GDK_BUTTON2_MASK);
+            }
+        }
+        break;
+
+    case GDK_BUTTON_RELEASE: {
+        bool middle_mouse_zoom = prefs->getBool("/options/middlemousezoom/value");
+
+        xp = yp = 0;
+
+        if (panning_cursor == 1) {
+            panning_cursor = 0;
+            _desktop->getCanvas()->get_window()->set_cursor(_cursor);
+        }
+
+        if (middle_mouse_zoom && within_tolerance && (panning || zoom_rb)) {
+            zoom_rb = 0;
+
+            if (panning) {
+                panning = PANNING_NONE;
+                ungrabCanvasEvents();
+            }
+
+            Geom::Point const event_w(event->button.x, event->button.y);
+            Geom::Point const event_dt(_desktop->w2d(event_w));
+
+            double const zoom_inc = prefs->getDoubleLimited(
+                    "/options/zoomincrement/value", M_SQRT2, 1.01, 10);
+
+            _desktop->zoom_relative(event_dt, (event->button.state & GDK_SHIFT_MASK) ? 1 / zoom_inc : zoom_inc);
+            ret = TRUE;
+        } else if (panning == event->button.button) {
+            panning = PANNING_NONE;
+            ungrabCanvasEvents();
+
+            // in slow complex drawings, some of the motion events are lost;
+            // to make up for this, we scroll it once again to the button-up event coordinates
+            // (i.e. canvas will always get scrolled all the way to the mouse release point,
+            // even if few intermediate steps were visible)
+            Geom::Point const motion_w(event->button.x, event->button.y);
+            Geom::Point const moved_w(motion_w - button_w);
+
+            _desktop->scroll_relative(moved_w);
+            ret = TRUE;
+        } else if (zoom_rb == event->button.button) {
+            zoom_rb = 0;
+
+            Geom::OptRect const b = Inkscape::Rubberband::get(_desktop)->getRectangle();
+            Inkscape::Rubberband::get(_desktop)->stop();
+
+            if (b && !within_tolerance) {
+                _desktop->set_display_area(*b, 10);
+            }
+
+            ret = TRUE;
+        }
+        }
+        break;
+
+    case GDK_KEY_PRESS: {
+        double const acceleration = prefs->getDoubleLimited(
+                "/options/scrollingacceleration/value", 0, 0, 6);
+        int const key_scroll = prefs->getIntLimited("/options/keyscroll/value",
+                10, 0, 1000);
+
+        switch (get_latin_keyval(&event->key)) {
+        // GDK insists on stealing these keys (F1 for no idea what, tab for cycling widgets
+        // in the editing window). So we resteal them back and run our regular shortcut
+        // invoker on them. Tab is hardcoded. When actions are triggered by tab,
+        // we end up stealing events from GTK widgets.
+        case GDK_KEY_F1:
+            ret = Inkscape::Shortcuts::getInstance().invoke_action(&event->key);
+            break;
+        case GDK_KEY_Tab:
+            sp_selection_item_next(_desktop);
+            ret = true;
+            break;
+        case GDK_KEY_ISO_Left_Tab:
+            sp_selection_item_prev(_desktop);
+            ret = true;
+            break;
+
+        case GDK_KEY_Q:
+        case GDK_KEY_q:
+            if (_desktop->quick_zoomed()) {
+                ret = TRUE;
+            }
+            if (!MOD__SHIFT(event) && !MOD__CTRL(event) && !MOD__ALT(event)) {
+                _desktop->zoom_quick(true);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_W:
+        case GDK_KEY_w:
+        case GDK_KEY_F4:
+            /* Close view */
+            if (MOD__CTRL_ONLY(event)) {
+                sp_ui_close_view(nullptr);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_Left: // Ctrl Left
+        case GDK_KEY_KP_Left:
+        case GDK_KEY_KP_4:
+            if (MOD__CTRL_ONLY(event)) {
+                int i = (int) floor(key_scroll * accelerate_scroll(event, acceleration));
+
+                gobble_key_events(get_latin_keyval(&event->key), GDK_CONTROL_MASK);
+                _desktop->scroll_relative(Geom::Point(i, 0));
+            } else if (!_keyboardMove(event->key, Geom::Point(-1, 0))) {
+                Inkscape::Shortcuts::getInstance().invoke_action(&event->key);
+            }
+            ret = true;
+            break;
+
+        case GDK_KEY_Up: // Ctrl Up
+        case GDK_KEY_KP_Up:
+        case GDK_KEY_KP_8:
+            if (MOD__CTRL_ONLY(event)) {
+                int i = (int) floor(key_scroll * accelerate_scroll(event, acceleration));
+
+                gobble_key_events(get_latin_keyval(&event->key), GDK_CONTROL_MASK);
+                _desktop->scroll_relative(Geom::Point(0, i));
+            } else if (!_keyboardMove(event->key, Geom::Point(0, -_desktop->yaxisdir()))) {
+                Inkscape::Shortcuts::getInstance().invoke_action(&event->key);
+            }
+            ret = true;
+            break;
+
+        case GDK_KEY_Right: // Ctrl Right
+        case GDK_KEY_KP_Right:
+        case GDK_KEY_KP_6:
+            if (MOD__CTRL_ONLY(event)) {
+                int i = (int) floor(key_scroll * accelerate_scroll(event, acceleration));
+
+                gobble_key_events(get_latin_keyval(&event->key), GDK_CONTROL_MASK);
+                _desktop->scroll_relative(Geom::Point(-i, 0));
+            } else if (!_keyboardMove(event->key, Geom::Point(1, 0))) {
+                Inkscape::Shortcuts::getInstance().invoke_action(&event->key);
+            }
+            ret = true;
+            break;
+
+        case GDK_KEY_Down: // Ctrl Down
+        case GDK_KEY_KP_Down:
+        case GDK_KEY_KP_2:
+            if (MOD__CTRL_ONLY(event)) {
+                int i = (int) floor(key_scroll * accelerate_scroll(event, acceleration));
+
+                gobble_key_events(get_latin_keyval(&event->key), GDK_CONTROL_MASK);
+                _desktop->scroll_relative(Geom::Point(0, -i));
+            } else if (!_keyboardMove(event->key, Geom::Point(0, _desktop->yaxisdir()))) {
+                Inkscape::Shortcuts::getInstance().invoke_action(&event->key);
+            }
+            ret = true;
+            break;
+
+        case GDK_KEY_Menu:
+            this->menu_popup(event);
+            ret = TRUE;
+            break;
+
+        case GDK_KEY_F10:
+            if (MOD__SHIFT_ONLY(event)) {
+                this->menu_popup(event);
+                ret = TRUE;
+            }
+            break;
+
+        case GDK_KEY_space:
+            within_tolerance = true;
+            xp = yp = 0;
+            if (!allow_panning) break;
+            panning = PANNING_SPACE;
+            this->message_context->set(Inkscape::INFORMATION_MESSAGE,
+                    _("<b>Space+mouse move</b> to pan canvas"));
+
+            ret = TRUE;
+            break;
+
+        case GDK_KEY_z:
+        case GDK_KEY_Z:
+            if (MOD__ALT_ONLY(event)) {
+                _desktop->zoom_grab_focus();
+                ret = TRUE;
+            }
+            break;
+
+        default:
+            break;
+            }
+        }
+        break;
+
+    case GDK_KEY_RELEASE:
+        // Stop panning on any key release
+        if (this->is_space_panning()) {
+            this->message_context->clear();
+        }
+
+        if (panning) {
+            panning = PANNING_NONE;
+            xp = yp = 0;
+
+            ungrabCanvasEvents();
+        }
+
+        if (panning_cursor == 1) {
+            panning_cursor = 0;
+            _desktop->getCanvas()->get_window()->set_cursor(_cursor);
+        }
+
+        switch (get_latin_keyval(&event->key)) {
+        case GDK_KEY_space:
+            if (within_tolerance) {
+                // Space was pressed, but not panned
+                sp_toggle_selector(_desktop);
+
+                // Be careful, sp_toggle_selector will delete ourselves.
+                // Thus, make sure we return immediately.
+                return true;
+            }
+
+            break;
+
+        case GDK_KEY_Q:
+        case GDK_KEY_q:
+            if (_desktop->quick_zoomed()) {
+                _desktop->zoom_quick(false);
+                ret = TRUE;
+            }
+            break;
+
+        default:
+            break;
+        }
+        break;
+
+    case GDK_SCROLL: {
+        int constexpr WHEEL_SCROLL_DEFAULT = 40;
+        
+        // previously we did two wheel_scrolls for each mouse scroll
+        int const wheel_scroll = prefs->getIntLimited(
+                "/options/wheelscroll/value", WHEEL_SCROLL_DEFAULT, 0, 1000) * 2;
+
+        // Size of smooth-scrolls (only used in GTK+ 3)
+        gdouble delta_x = 0;
+        gdouble delta_y = 0;
+
+        using Modifiers::Type;
+        using Modifiers::Triggers;
+        Type action = Modifiers::Modifier::which(Triggers::CANVAS | Triggers::SCROLL, event->scroll.state);
+
+        if (action == Type::CANVAS_ROTATE && !_desktop->get_rotation_lock()) {
+            double rotate_inc = prefs->getDoubleLimited(
+                    "/options/rotateincrement/value", 15, 1, 90, "°" );
+            rotate_inc *= M_PI/180.0;
+
+            switch (event->scroll.direction) {
+            case GDK_SCROLL_UP:
+                // Do nothing
+                break;
+
+            case GDK_SCROLL_DOWN:
+                rotate_inc = -rotate_inc;
+                break;
+
+            case GDK_SCROLL_SMOOTH: {
+                gdk_event_get_scroll_deltas(event, &delta_x, &delta_y);
+#ifdef GDK_WINDOWING_QUARTZ
+                // MacBook trackpad scroll event gives pixel delta
+                delta_y /= WHEEL_SCROLL_DEFAULT;
+#endif
+                double delta_y_clamped = CLAMP(delta_y, -1.0, 1.0); // values > 1 result in excessive rotating
+                rotate_inc = rotate_inc * -delta_y_clamped;
+                break;
+            }
+
+            default:
+                rotate_inc = 0.0;
+                break;
+            }
+
+            if (rotate_inc != 0.0) {
+                Geom::Point const scroll_dt = _desktop->point();
+                _desktop->rotate_relative_keep_point(scroll_dt, rotate_inc);
+                ret = TRUE;
+            }
+
+        } else if (action == Type::CANVAS_PAN_X) {
+           /* shift + wheel, pan left--right */
+
+            switch (event->scroll.direction) {
+            case GDK_SCROLL_UP:
+            case GDK_SCROLL_LEFT:
+                _desktop->scroll_relative(Geom::Point(wheel_scroll, 0));
+                ret = TRUE;
+                break;
+
+            case GDK_SCROLL_DOWN:
+            case GDK_SCROLL_RIGHT:
+                _desktop->scroll_relative(Geom::Point(-wheel_scroll, 0));
+                ret = TRUE;
+                break;
+
+            case GDK_SCROLL_SMOOTH: {
+                gdk_event_get_scroll_deltas(event, &delta_x, &delta_y);
+#ifdef GDK_WINDOWING_QUARTZ
+                // MacBook trackpad scroll event gives pixel delta
+                delta_y /= WHEEL_SCROLL_DEFAULT;
+#endif
+                _desktop->scroll_relative(Geom::Point(wheel_scroll * -delta_y, 0));
+                ret = TRUE;
+                break;
+            }
+
+            default:
+                break;
+            }
+
+        } else if (action == Type::CANVAS_ZOOM) {
+            /* ctrl + wheel, zoom in--out */
+            double rel_zoom;
+            double const zoom_inc = prefs->getDoubleLimited(
+                    "/options/zoomincrement/value", M_SQRT2, 1.01, 10);
+
+            switch (event->scroll.direction) {
+            case GDK_SCROLL_UP:
+                rel_zoom = zoom_inc;
+                break;
+
+            case GDK_SCROLL_DOWN:
+                rel_zoom = 1 / zoom_inc;
+                break;
+
+            case GDK_SCROLL_SMOOTH: {
+                gdk_event_get_scroll_deltas(event, &delta_x, &delta_y);
+#ifdef GDK_WINDOWING_QUARTZ
+                // MacBook trackpad scroll event gives pixel delta
+                delta_y /= WHEEL_SCROLL_DEFAULT;
+#endif
+                double delta_y_clamped = CLAMP(std::abs(delta_y), 0.0, 1.0); // values > 1 result in excessive zooming
+                double zoom_inc_scaled = (zoom_inc-1) * delta_y_clamped + 1;
+                if (delta_y < 0) {
+                    rel_zoom = zoom_inc_scaled;
+                } else {
+                    rel_zoom = 1 / zoom_inc_scaled;
+                }
+                break;
+            }
+
+            default:
+                rel_zoom = 0.0;
+                break;
+            }
+
+            if (rel_zoom != 0.0) {
+                Geom::Point const scroll_dt = _desktop->point();
+                _desktop->zoom_relative(scroll_dt, rel_zoom);
+                ret = TRUE;
+            }
+
+            /* no modifier, pan up--down (left--right on multiwheel mice?) */
+        } else if (action == Type::CANVAS_PAN_Y) {
+            switch (event->scroll.direction) {
+            case GDK_SCROLL_UP:
+                _desktop->scroll_relative(Geom::Point(0, wheel_scroll));
+                break;
+
+            case GDK_SCROLL_DOWN:
+                _desktop->scroll_relative(Geom::Point(0, -wheel_scroll));
+                break;
+
+            case GDK_SCROLL_LEFT:
+                _desktop->scroll_relative(Geom::Point(wheel_scroll, 0));
+                break;
+
+            case GDK_SCROLL_RIGHT:
+                _desktop->scroll_relative(Geom::Point(-wheel_scroll, 0));
+                break;
+
+            case GDK_SCROLL_SMOOTH:
+                gdk_event_get_scroll_deltas(event, &delta_x, &delta_y);
+#ifdef GDK_WINDOWING_QUARTZ
+                // MacBook trackpad scroll event gives pixel delta
+                delta_x /= WHEEL_SCROLL_DEFAULT;
+                delta_y /= WHEEL_SCROLL_DEFAULT;
+#endif
+                _desktop->scroll_relative(Geom::Point(-wheel_scroll * delta_x, -wheel_scroll * delta_y));
+                break;
+            }
+            ret = TRUE;
+        } else {
+            g_warning("unhandled scroll event with scroll.state=0x%x", event->scroll.state);
+        }
+        break;
+    }
+
+    default:
+        break;
+    }
+
+    return ret;
+}
+
+/**
+ * This function allows to handle global tool events if _pre function is not fully overridden.
+ */
+
+void ToolBase::set_on_buttons(GdkEvent *event)
+{
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+            switch (event->button.button) {
+                case 1:
+                    this->_button1on = true;
+                    break;
+                case 2:
+                    this->_button2on = true;
+                    break;
+                case 3:
+                    this->_button3on = true;
+                    break;
+            }
+            break;
+        case GDK_BUTTON_RELEASE:
+            switch (event->button.button) {
+                case 1:
+                    this->_button1on = false;
+                    break;
+                case 2:
+                    this->_button2on = false;
+                    break;
+                case 3:
+                    this->_button3on = false;
+                    break;
+            }
+            break;
+        case GDK_MOTION_NOTIFY:
+            if (event->motion.state & Gdk::ModifierType::BUTTON1_MASK) {
+                this->_button1on = true;
+            } else {
+                this->_button1on = false;
+            }
+            if (event->motion.state & Gdk::ModifierType::BUTTON2_MASK) {
+                this->_button2on = true;
+            } else {
+                this->_button2on = false;
+            }
+            if (event->motion.state & Gdk::ModifierType::BUTTON3_MASK) {
+                this->_button3on = true;
+            } else {
+                this->_button3on = false;
+            }
+    }
+}
+
+bool ToolBase::are_buttons_1_and_3_on() const
+{
+    return this->_button1on && this->_button3on;
+}
+
+bool ToolBase::are_buttons_1_and_3_on(GdkEvent* event)
+{
+    set_on_buttons(event);
+    return are_buttons_1_and_3_on();
+}
+
+/**
+ * Handles item specific events. Gets called from Gdk.
+ *
+ * Only reacts to right mouse button at the moment.
+ * \todo Fixme: do context sensitive popup menu on items.
+ */
+bool ToolBase::item_handler(SPItem* item, GdkEvent* event) {
+    int ret = FALSE;
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+        if (!are_buttons_1_and_3_on(event) && event->button.button == 3 &&
+            !((event->button.state & GDK_SHIFT_MASK) || (event->button.state & GDK_CONTROL_MASK))) {
+            this->menu_popup(event);
+            ret = TRUE;
+        }
+        break;
+
+    default:
+        break;
+    }
+
+    return ret;
+}
+
+/**
+ * Returns true if we're hovering above a knot (needed because we don't want to pre-snap in that case).
+ */
+bool ToolBase::sp_event_context_knot_mouseover() const {
+    if (this->shape_editor) {
+        return this->shape_editor->knot_mouseover();
+    }
+
+    return false;
+}
+
+/**
+ * Enables/disables the ToolBase's SelCue.
+ */
+void ToolBase::enableSelectionCue(bool enable) {
+    if (enable) {
+        if (!_selcue) {
+            _selcue = new Inkscape::SelCue(_desktop);
+        }
+    } else {
+        delete _selcue;
+        _selcue = nullptr;
+    }
+}
+
+/*
+ * Enables/disables the ToolBase's GrDrag.
+ */
+void ToolBase::enableGrDrag(bool enable) {
+    if (enable) {
+        if (!_grdrag) {
+            _grdrag = new GrDrag(_desktop);
+        }
+    } else {
+        if (_grdrag) {
+            delete _grdrag;
+            _grdrag = nullptr;
+        }
+    }
+}
+
+/**
+ * Delete a selected GrDrag point
+ */
+bool ToolBase::deleteSelectedDrag(bool just_one)
+{
+    if (_grdrag && !_grdrag->selected.empty()) {
+        _grdrag->deleteSelected(just_one);
+        return true;
+    }
+    return false;
+}
+
+/**
+ * Return true if there is a gradient drag.
+ */
+bool ToolBase::hasGradientDrag() const
+{
+    return _grdrag && _grdrag->isNonEmpty();
+}
+
+/**
+ * Grab events from the Canvas Catchall. (Common configuration.)
+ */
+void ToolBase::grabCanvasEvents(Gdk::EventMask mask)
+{
+    _desktop->getCanvasCatchall()->grab(mask, nullptr); // Cursor is null.
+}
+
+/**
+ * Ungrab events from the Canvas Catchall. (Common configuration.)
+ */
+void ToolBase::ungrabCanvasEvents()
+{
+    _desktop->snapindicator->remove_snaptarget();
+    _desktop->getCanvasCatchall()->ungrab();
+}
+
+/** Enable (or disable) high precision for motion events
+  *
+  * This is intended to be used by drawing tools, that need to process motion events with high accuracy
+  * and high update rate (for example free hand tools)
+  *
+  * With standard accuracy some intermediate motion events might be discarded
+  *
+  * Call this function when an operation that requires high accuracy is started (e.g. mouse button is pressed
+  * to draw a line). Make sure to call it again and restore standard precision afterwards. **/
+void ToolBase::set_high_motion_precision(bool high_precision) {
+    Glib::RefPtr<Gdk::Window> window = _desktop->getToplevel()->get_window();
+
+    if (window) {
+        window->set_event_compression(!high_precision);
+    }
+}
+
+Geom::Point ToolBase::setup_for_drag_start(GdkEvent *ev)
+{
+    this->xp = static_cast<gint>(ev->button.x);
+    this->yp = static_cast<gint>(ev->button.y);
+    this->within_tolerance = true;
+
+    Geom::Point const p(ev->button.x, ev->button.y);
+    item_to_select = Inkscape::UI::Tools::sp_event_context_find_item(_desktop, p, ev->button.state & GDK_MOD1_MASK, TRUE);
+    return _desktop->w2d(p);
+}
+
+/**
+ * Discard and count matching key events from top of event bucket.
+ * Convenience function that just passes request to canvas.
+ */
+int ToolBase::gobble_key_events(guint keyval, guint mask) const
+{
+    return _desktop->canvas->gobble_key_events(keyval, mask);
+}
+
+/**
+ * Discard matching motion events from top of event bucket.
+ * Convenience function that just passes request to canvas.
+ */
+void ToolBase::gobble_motion_events(guint mask) const
+{
+    _desktop->canvas->gobble_motion_events(mask);
+}
+
+/**
+ * Calls virtual set() function of ToolBase.
+ */
+void sp_event_context_read(ToolBase *ec, gchar const *key) {
+    g_return_if_fail(ec != nullptr);
+    g_return_if_fail(key != nullptr);
+
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    Inkscape::Preferences::Entry val = prefs->getEntry(ec->getPrefsPath() + '/' + key);
+    ec->set(val);
+}
+
+/**
+ * Handles snapping events for all tools and then passes to tool_root_handler.
+ */
+gint ToolBase::start_root_handler(GdkEvent *event)
+{
+#ifdef EVENT_DEBUG
+    ui_dump_event(reinterpret_cast<GdkEvent *>(event), "ToolBase::start_root_handler");
+#endif
+
+    if (!_uses_snap) {
+        return this->tool_root_handler(event);
+    }
+
+    switch (event->type) {
+    case GDK_MOTION_NOTIFY:
+        sp_event_context_snap_delay_handler(this, nullptr, nullptr,
+                (GdkEventMotion *) event,
+                DelayedSnapEvent::EVENTCONTEXT_ROOT_HANDLER);
+        break;
+    case GDK_BUTTON_RELEASE:
+        if (_delayed_snap_event) {
+            // If we have any pending snapping action, then invoke it now
+            sp_event_context_snap_watchdog_callback(_delayed_snap_event);
+        }
+        break;
+    case GDK_BUTTON_PRESS:
+    case GDK_2BUTTON_PRESS:
+    case GDK_3BUTTON_PRESS:
+        // Snapping will be on hold if we're moving the mouse at high speeds. When starting
+        // drawing a new shape we really should snap though.
+        _desktop->namedview->snap_manager.snapprefs.setSnapPostponedGlobally(false);
+        break;
+    default:
+        break;
+    }
+
+    return this->tool_root_handler(event);
+}
+
+/**
+ * Calls the right tool's event handler, depending on the selected tool and state.
+ */
+gint ToolBase::tool_root_handler(GdkEvent *event)
+{
+#ifdef EVENT_DEBUG
+    ui_dump_event(reinterpret_cast<GdkEvent *>(event), "tool_root_handler");
+#endif
+    gint ret = false;
+
+    // Just set the on buttons for now. later, behave as intended.
+    this->set_on_buttons(event);
+
+    // refresh coordinates UI here while 'event' is still valid
+    set_event_location(_desktop, event);
+
+    // Panning has priority over tool-specific event handling
+    if (this->is_panning()) {
+        ret = ToolBase::root_handler(event);
+    } else {
+        ret = this->root_handler(event);
+    }
+
+    // at this point 'event' could be deleted already (after ctrl+w document close)
+
+    return ret;
+}
+
+/**
+ * Starts handling item snapping and pass to virtual_item_handler afterwards.
+ */
+gint ToolBase::start_item_handler(SPItem *item, GdkEvent *event)
+{
+    if (!_uses_snap) {
+        return this->virtual_item_handler(item, event);
+    }
+
+    switch (event->type) {
+    case GDK_MOTION_NOTIFY:
+        sp_event_context_snap_delay_handler(this, (gpointer) item, nullptr, (GdkEventMotion *) event, DelayedSnapEvent::EVENTCONTEXT_ITEM_HANDLER);
+        break;
+    case GDK_BUTTON_RELEASE:
+        if (_delayed_snap_event) {
+            // If we have any pending snapping action, then invoke it now
+            sp_event_context_snap_watchdog_callback(_delayed_snap_event);
+        }
+        break;
+    case GDK_BUTTON_PRESS:
+    case GDK_2BUTTON_PRESS:
+    case GDK_3BUTTON_PRESS:
+        // Snapping will be on hold if we're moving the mouse at high speeds. When starting
+        // drawing a new shape we really should snap though.
+        _desktop->namedview->snap_manager.snapprefs.setSnapPostponedGlobally(false);
+        break;
+    default:
+        break;
+    }
+
+    return this->virtual_item_handler(item, event);
+}
+
+gint ToolBase::virtual_item_handler(SPItem *item, GdkEvent *event)
+{
+    gint ret = false;
+
+    // Just set the on buttons for now. later, behave as intended.
+    this->set_on_buttons(event);
+
+    // Panning has priority over tool-specific event handling
+    if (is_panning()) {
+        ret = ToolBase::item_handler(item, event);
+    } else {
+        ret = item_handler(item, event);
+    }
+
+    if (!ret) {
+        ret = this->tool_root_handler(event);
+    } else {
+        set_event_location(_desktop, event);
+    }
+
+    return ret;
+}
+
+/**
+ * Shows coordinates on status bar.
+ */
+static void set_event_location(SPDesktop *desktop, GdkEvent *event) {
+    if (event->type != GDK_MOTION_NOTIFY) {
+        return;
+    }
+
+    Geom::Point const button_w(event->button.x, event->button.y);
+    Geom::Point const button_dt(desktop->w2d(button_w));
+    desktop->set_coordinate_status(button_dt);
+}
+
+//-------------------------------------------------------------------
+/**
+ * Create popup menu and tell Gtk to show it.
+ */
+void ToolBase::menu_popup(GdkEvent *event, SPObject *obj) {
+
+    if (!obj) {
+        if (event->type == GDK_KEY_PRESS && !_desktop->getSelection()->isEmpty()) {
+            obj = _desktop->getSelection()->items().front();
+        } else {
+            // Using the same function call used on left click in sp_select_context_item_handler() to get top of z-order
+            // fixme: sp_canvas_arena should set the top z-order object as arena->active
+            auto p = Geom::Point(event->button.x, event->button.y);
+            obj = sp_event_context_find_item (_desktop, p, false, false);
+        }
+    }
+
+    ContextMenu* menu = new ContextMenu(_desktop, obj);
+    menu->attach_to_widget(*(_desktop->getCanvas())); // So actions work!
+    menu->show();
+
+    switch (event->type) {
+    case GDK_BUTTON_PRESS:
+    case GDK_KEY_PRESS:
+        menu->popup_at_pointer(event);
+        break;
+    default:
+        break;
+    }
+}
+
+/**
+ * Show tool context specific modifier tip.
+ */
+void sp_event_show_modifier_tip(Inkscape::MessageContext *message_context,
+        GdkEvent *event, gchar const *ctrl_tip, gchar const *shift_tip,
+        gchar const *alt_tip) {
+    guint keyval = get_latin_keyval(&event->key);
+
+    bool ctrl = ctrl_tip && (MOD__CTRL(event) || (keyval == GDK_KEY_Control_L) || (keyval
+            == GDK_KEY_Control_R));
+    bool shift = shift_tip && (MOD__SHIFT(event) || (keyval == GDK_KEY_Shift_L) || (keyval
+            == GDK_KEY_Shift_R));
+    bool alt = alt_tip && (MOD__ALT(event) || (keyval == GDK_KEY_Alt_L) || (keyval
+            == GDK_KEY_Alt_R) || (keyval == GDK_KEY_Meta_L) || (keyval == GDK_KEY_Meta_R));
+
+    gchar *tip = g_strdup_printf("%s%s%s%s%s", (ctrl ? ctrl_tip : ""), (ctrl
+            && (shift || alt) ? "; " : ""), (shift ? shift_tip : ""), ((ctrl
+            || shift) && alt ? "; " : ""), (alt ? alt_tip : ""));
+
+    if (strlen(tip) > 0) {
+        message_context->flash(Inkscape::INFORMATION_MESSAGE, tip);
+    }
+
+    g_free(tip);
+}
+
+/**
+ * Try to determine the keys group of Latin layout.
+ * Check available keymap entries for Latin 'a' key and find the minimal integer value.
+ */
+static void update_latin_keys_group() {
+    GdkKeymapKey* keys;
+    gint n_keys;
+
+    latin_keys_group_valid = FALSE;
+    latin_keys_groups.clear();
+
+    if (gdk_keymap_get_entries_for_keyval(Gdk::Display::get_default()->get_keymap(), GDK_KEY_a, &keys, &n_keys)) {
+        for (gint i = 0; i < n_keys; i++) {
+            latin_keys_groups.insert(keys[i].group);
+
+            if (!latin_keys_group_valid || keys[i].group < latin_keys_group) {
+                latin_keys_group = keys[i].group;
+                latin_keys_group_valid = TRUE;
+            }
+        }
+        g_free(keys);
+    }
+}
+
+/**
+ * Initialize Latin keys group handling.
+ */
+void init_latin_keys_group() {
+    g_signal_connect(G_OBJECT(Gdk::Display::get_default()->get_keymap()),
+            "keys-changed", G_CALLBACK(update_latin_keys_group), NULL);
+    update_latin_keys_group();
+}
+
+/**
+ * Return the keyval corresponding to the key event in Latin group.
+ *
+ * Use this instead of simply event->keyval, so that your keyboard shortcuts
+ * work regardless of layouts (e.g., in Cyrillic).
+ */
+guint get_latin_keyval(GdkEventKey const *event, guint *consumed_modifiers /*= NULL*/) {
+    guint keyval = 0;
+    GdkModifierType modifiers;
+    gint group = latin_keys_group_valid ? latin_keys_group : event->group;
+
+    if (latin_keys_groups.count(event->group)) {
+        // Keyboard group is a latin layout, so just use it.
+        group = event->group;
+    }
+
+    gdk_keymap_translate_keyboard_state(
+            Gdk::Display::get_default()->get_keymap(),
+            event->hardware_keycode, (GdkModifierType) event->state, group,
+            &keyval, nullptr, nullptr, &modifiers);
+
+    if (consumed_modifiers) {
+        *consumed_modifiers = modifiers;
+    }
+    if (keyval != event->keyval) {
+        std::cerr << "get_latin_keyval: OH OH OH keyval did change! "
+                  << "  keyval: " << keyval << " (" << (char)keyval << ")"
+                  << "  event->keyval: " << event->keyval << "(" << (char)event->keyval << ")" << std::endl;
+    }
+    return keyval;
+}
+
+/**
+ * Returns item at point p in desktop.
+ *
+ * If state includes alt key mask, cyclically selects under; honors
+ * into_groups.
+ */
+SPItem *sp_event_context_find_item(SPDesktop *desktop, Geom::Point const &p,
+                                   bool select_under, bool into_groups)
+{
+    SPItem *item = nullptr;
+
+    if (select_under) {
+        auto tmp = desktop->selection->items();
+        std::vector<SPItem *> vec(tmp.begin(), tmp.end());
+        SPItem *selected_at_point = desktop->getItemFromListAtPointBottom(vec, p);
+        item = desktop->getItemAtPoint(p, into_groups, selected_at_point);
+        if (item == nullptr) { // we may have reached bottom, flip over to the top
+            item = desktop->getItemAtPoint(p, into_groups, nullptr);
+        }
+    } else {
+        item = desktop->getItemAtPoint(p, into_groups, nullptr);
+    }
+
+    return item;
+}
+
+/**
+ * Returns item if it is under point p in desktop, at any depth; otherwise returns NULL.
+ *
+ * Honors into_groups.
+ */
+SPItem *
+sp_event_context_over_item(SPDesktop *desktop, SPItem *item,
+        Geom::Point const &p) {
+	std::vector<SPItem*> temp;
+    temp.push_back(item);
+    SPItem *item_at_point = desktop->getItemFromListAtPointBottom(temp, p);
+    return item_at_point;
+}
+
+ShapeEditor *
+sp_event_context_get_shape_editor(ToolBase *ec) {
+    return ec->shape_editor;
+}
+
+
+/**
+ * Analyses the current event, calculates the mouse speed, turns snapping off (temporarily) if the
+ * mouse speed is above a threshold, and stores the current event such that it can be re-triggered when needed
+ * (re-triggering is controlled by a watchdog timer).
+ *
+ * @param ec Pointer to the event context.
+ * @param dse_item Pointer that store a reference to a canvas or to an item.
+ * @param dse_item2 Another pointer, storing a reference to a knot or controlpoint.
+ * @param event Pointer to the motion event.
+ * @param origin Identifier (enum) specifying where the delay (and the call to this method) were initiated.
+ */
+void sp_event_context_snap_delay_handler(ToolBase *ec,
+        gpointer const dse_item, gpointer const dse_item2, GdkEventMotion *event,
+        DelayedSnapEvent::DelayedSnapEventOrigin origin)
+{
+    static guint32 prev_time;
+    static std::optional<Geom::Point> prev_pos;
+
+    if (!ec->_uses_snap || ec->_dse_callback_in_process) {
+        return;
+    }
+
+    // Snapping occurs when dragging with the left mouse button down, or when hovering e.g. in the pen tool with left mouse button up
+    bool const c1 = event->state & GDK_BUTTON2_MASK; // We shouldn't hold back any events when other mouse buttons have been
+    bool const c2 = event->state & GDK_BUTTON3_MASK; // pressed, e.g. when scrolling with the middle mouse button; if we do then
+    // Inkscape will get stuck in an unresponsive state
+    bool const c3 = dynamic_cast<Inkscape::UI::Tools::CalligraphicTool *>(ec);
+    // The snap delay will repeat the last motion event, which will lead to
+    // erroneous points in the calligraphy context. And because we don't snap
+    // in this context, we might just as well disable the snap delay all together
+    bool const c4 = ec->is_panning(); // Don't snap while panning
+
+    if (c1 || c2 || c3 || c4) {
+        // Make sure that we don't send any pending snap events to a context if we know in advance
+        // that we're not going to snap any way (e.g. while scrolling with middle mouse button)
+        // Any motion event might affect the state of the context, leading to unexpected behavior
+        ec->discard_delayed_snap_event();
+    } else if (ec->getDesktop() &&
+               ec->getDesktop()->namedview->snap_manager.snapprefs.getSnapEnabledGlobally()) {
+        // Snap when speed drops below e.g. 0.02 px/msec, or when no motion events have occurred for some period.
+        // i.e. snap when we're at stand still. A speed threshold enforces snapping for tablets, which might never
+        // be fully at stand still and might keep spitting out motion events.
+        ec->getDesktop()->namedview->snap_manager.snapprefs.setSnapPostponedGlobally(true); // put snapping on hold
+
+        Geom::Point event_pos(event->x, event->y);
+        guint32 event_t = gdk_event_get_time((GdkEvent *) event);
+
+        if (prev_pos) {
+            Geom::Coord dist = Geom::L2(event_pos - *prev_pos);
+            guint32 delta_t = event_t - prev_time;
+            gdouble speed = delta_t > 0 ? dist / delta_t : 1000;
+            //std::cout << "Mouse speed = " << speed << " px/msec " << std::endl;
+            if (speed > 0.02) { // Jitter threshold, might be needed for tablets
+                // We're moving fast, so postpone any snapping until the next GDK_MOTION_NOTIFY event. We
+                // will keep on postponing the snapping as long as the speed is high.
+                // We must snap at some point in time though, so set a watchdog timer at some time from
+                // now, just in case there's no future motion event that drops under the speed limit (when
+                // stopping abruptly)
+                delete ec->_delayed_snap_event;
+                ec->_delayed_snap_event = new DelayedSnapEvent(ec, dse_item, dse_item2, event, origin); // watchdog is reset, i.e. pushed forward in time
+                // If the watchdog expires before a new motion event is received, we will snap (as explained
+                // above). This means however that when the timer is too short, we will always snap and that the
+                // speed threshold is ineffective. In the extreme case the delay is set to zero, and snapping will
+                // be immediate, as it used to be in the old days ;-).
+            } else { // Speed is very low, so we're virtually at stand still
+                // But if we're really standing still, then we should snap now. We could use some low-pass filtering,
+                // otherwise snapping occurs for each jitter movement. For this filtering we'll leave the watchdog to expire,
+                // snap, and set a new watchdog again.
+                if (ec->_delayed_snap_event == nullptr) { // no watchdog has been set
+                    // it might have already expired, so we'll set a new one; the snapping frequency will be limited this way
+                    ec->_delayed_snap_event = new DelayedSnapEvent(ec, dse_item, dse_item2, event, origin);
+                } // else: watchdog has been set before and we'll wait for it to expire
+            }
+        } else {
+            // This is the first GDK_MOTION_NOTIFY event, so postpone snapping and set the watchdog
+            g_assert(ec->_delayed_snap_event == nullptr);
+            ec->_delayed_snap_event = new DelayedSnapEvent(ec, dse_item, dse_item2, event, origin);
+        }
+
+        prev_pos = event_pos;
+        prev_time = event_t;
+    }
+}
+
+/**
+ * When the snap delay watchdog timer barks, this method will be called and will re-inject the last motion
+ * event in an appropriate place, with snapping being turned on again.
+ */
+gboolean sp_event_context_snap_watchdog_callback(gpointer data) {
+    // Snap NOW! For this the "postponed" flag will be reset and the last motion event will be repeated
+    DelayedSnapEvent *dse = reinterpret_cast<DelayedSnapEvent*> (data);
+
+    if (dse == nullptr) {
+        // This might occur when this method is called directly, i.e. not through the timer
+        // E.g. on GDK_BUTTON_RELEASE in start_root_handler()
+        return FALSE;
+    }
+
+    ToolBase *ec = dse->getEventContext();
+    if (ec == nullptr) {
+        delete dse;
+        return false;
+    }
+
+    const SPDesktop *dt = ec->getDesktop();
+    if (dt == nullptr) {
+        ec->_delayed_snap_event = nullptr;
+        delete dse;
+        return false;
+    }
+
+    ec->_dse_callback_in_process = true;
+
+    dt->namedview->snap_manager.snapprefs.setSnapPostponedGlobally(false);
+
+    // Depending on where the delayed snap event originated from, we will inject it back at it's origin
+    // The switch below takes care of that and prepares the relevant parameters
+    switch (dse->getOrigin()) {
+    case DelayedSnapEvent::EVENTCONTEXT_ROOT_HANDLER:
+        ec->tool_root_handler(dse->getEvent());
+        break;
+    case DelayedSnapEvent::EVENTCONTEXT_ITEM_HANDLER: {
+        auto item = static_cast<SPItem *>(dse->getItem());
+        if (item) {
+            ec->virtual_item_handler(item, dse->getEvent());
+        }
+    }
+        break;
+    case DelayedSnapEvent::KNOT_HANDLER: {
+        gpointer knot = dse->getItem2();
+        check_if_knot_deleted(knot);
+        if (knot && SP_IS_KNOT(knot)) {
+            bool was_grabbed = SP_KNOT(knot)->is_grabbed();
+            SP_KNOT(knot)->setFlag(SP_KNOT_GRABBED, true); // Must be grabbed for Inkscape::SelTrans::handleRequest() to pass
+            sp_knot_handler_request_position(dse->getEvent(), SP_KNOT(knot));
+            SP_KNOT(knot)->setFlag(SP_KNOT_GRABBED, was_grabbed);
+        }
+    }
+        break;
+    case DelayedSnapEvent::CONTROL_POINT_HANDLER: {
+        using Inkscape::UI::ControlPoint;
+        gpointer pitem2 = dse->getItem2();
+        if (!pitem2)
+        {
+            ec->_delayed_snap_event = nullptr;
+            delete dse;
+            return false;
+        }
+        ControlPoint *point = reinterpret_cast<ControlPoint*> (pitem2);
+        if (point) {
+            if (point->position().isFinite() && (dt == point->_desktop)) {
+                point->_eventHandler(ec, dse->getEvent());
+            }
+            else {
+                //workaround:
+                //[Bug 781893] Crash after moving a Bezier node after Knot path effect?
+                // --> at some time, some point with X = 0 and Y = nan (not a number) is created ...
+                //     even so, the desktop pointer is invalid and equal to 0xff
+                g_warning ("encountered non finite point when evaluating snapping callback");
+            }
+        }
+    }
+        break;
+    case DelayedSnapEvent::GUIDE_HANDLER: {
+        auto item  = static_cast<CanvasItemGuideLine *>(dse->getItem());
+        auto item2 = static_cast<SPGuide *>(dse->getItem2());
+        if (item && item2) {
+            sp_dt_guide_event(dse->getEvent(), item, item2);
+        }
+    }
+        break;
+    case DelayedSnapEvent::GUIDE_HRULER:
+    case DelayedSnapEvent::GUIDE_VRULER: {
+        gpointer item = dse->getItem();
+        auto item2 = static_cast<Gtk::Widget *>(dse->getItem2());
+        if (item && item2) {
+            g_assert(GTK_IS_WIDGET(item));
+            if (dse->getOrigin() == DelayedSnapEvent::GUIDE_HRULER) {
+                SPDesktopWidget::ruler_event(GTK_WIDGET(item), dse->getEvent(), SP_DESKTOP_WIDGET(item2), true);
+            } else {
+                SPDesktopWidget::ruler_event(GTK_WIDGET(item), dse->getEvent(), SP_DESKTOP_WIDGET(item2), false);
+            }
+        }
+    }
+        break;
+    default:
+        g_warning("Origin of snap-delay event has not been defined!;");
+        break;
+    }
+
+    ec->_delayed_snap_event = nullptr;
+    delete dse;
+
+    ec->_dse_callback_in_process = false;
+
+    return FALSE; //Kills the timer and stops it from executing this callback over and over again.
+}
+
+void ToolBase::discard_delayed_snap_event()
+{
+    delete _delayed_snap_event;
+    _delayed_snap_event = nullptr;
+    _desktop->namedview->snap_manager.snapprefs.setSnapPostponedGlobally(false);
+}
+}
+}
+}
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+ */
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/tool-base.h b/src/ui/tools/tool-base.h
new file mode 100644
index 0000000..c384d09
--- /dev/null
+++ b/src/ui/tools/tool-base.h
@@ -0,0 +1,309 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef SEEN_SP_EVENT_CONTEXT_H
+#define SEEN_SP_EVENT_CONTEXT_H
+
+/*
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Frank Felfe <innerspace@iname.com>
+ *
+ * Copyright (C) 1999-2002 authors
+ * Copyright (C) 2001-2002 Ximian, Inc.
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include <cstddef>
+#include <string>
+#include <memory>
+
+#include <gdkmm/device.h>  // EventMask
+#include <gdkmm/cursor.h>
+#include <glib-object.h>
+#include <sigc++/trackable.h>
+
+#include <2geom/point.h>
+
+#include "preferences.h"
+
+class GrDrag;
+class SPDesktop;
+class SPObject;
+class SPItem;
+class SPGroup;
+class KnotHolder;
+namespace Inkscape {
+    class MessageContext;
+    class SelCue;
+}
+
+namespace Inkscape {
+namespace UI {
+
+class ShapeEditor;
+
+namespace Tools {
+
+class ToolBase;
+
+gboolean sp_event_context_snap_watchdog_callback(gpointer data);
+
+class DelayedSnapEvent {
+public:
+    enum DelayedSnapEventOrigin {
+        UNDEFINED_HANDLER = 0,
+        EVENTCONTEXT_ROOT_HANDLER,
+        EVENTCONTEXT_ITEM_HANDLER,
+        KNOT_HANDLER,
+        CONTROL_POINT_HANDLER,
+        GUIDE_HANDLER,
+        GUIDE_HRULER,
+        GUIDE_VRULER
+    };
+
+    DelayedSnapEvent(ToolBase *event_context, gpointer const dse_item, gpointer dse_item2, GdkEventMotion const *event, DelayedSnapEvent::DelayedSnapEventOrigin const origin)
+        : _timer_id(0)
+        , _event(nullptr)
+        , _item(dse_item)
+        , _item2(dse_item2)
+        , _origin(origin)
+        , _event_context(event_context)
+    {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        double value = prefs->getDoubleLimited("/options/snapdelay/value", 0, 0, 1000);
+
+        // We used to have this specified in milliseconds; this has changed to seconds now for consistency's sake
+        if (value > 1) { // Apparently we have an old preference file, this value must have been in milliseconds;
+            value = value / 1000.0; // now convert this value to seconds
+        }
+
+        _timer_id = g_timeout_add(value*1000.0, &sp_event_context_snap_watchdog_callback, this);
+        _event = gdk_event_copy((GdkEvent*) event);
+
+        ((GdkEventMotion *)_event)->time = GDK_CURRENT_TIME;
+    }
+
+    ~DelayedSnapEvent()    {
+        if (_timer_id > 0) g_source_remove(_timer_id); // Kill the watchdog
+        if (_event != nullptr) gdk_event_free(_event); // Remove the copy of the original event
+    }
+
+    ToolBase* getEventContext() {
+        return _event_context;
+    }
+
+    DelayedSnapEventOrigin getOrigin() {
+        return _origin;
+    }
+
+    GdkEvent* getEvent() {
+        return _event;
+    }
+
+    gpointer getItem() {
+        return _item;
+    }
+
+    gpointer getItem2() {
+        return _item2;
+    }
+
+private:
+    guint _timer_id;
+    GdkEvent* _event;
+    gpointer _item;
+    gpointer _item2;
+    DelayedSnapEventOrigin _origin;
+    ToolBase* _event_context;
+};
+
+void sp_event_context_snap_delay_handler(ToolBase *ec, gpointer const dse_item, gpointer const dse_item2, GdkEventMotion *event, DelayedSnapEvent::DelayedSnapEventOrigin origin);
+
+
+/**
+ * Base class for Event processors.
+ *
+ * This is per desktop object, which (its derivatives) implements
+ * different actions bound to mouse events.
+ *
+ * ToolBase is an abstract base class of all tools. As the name
+ * indicates, event context implementations process UI events (mouse
+ * movements and keypresses) and take actions (like creating or modifying
+ * objects).  There is one event context implementation for each tool,
+ * plus few abstract base classes. Writing a new tool involves
+ * subclassing ToolBase.
+ */
+class ToolBase : public sigc::trackable
+{
+public:
+    ToolBase(SPDesktop *desktop, std::string prefs_path, std::string cursor_filename, bool uses_snap = true);
+
+    virtual ~ToolBase();
+
+    ToolBase(const ToolBase&) = delete;
+    ToolBase& operator=(const ToolBase&) = delete;
+
+    virtual void set(const Inkscape::Preferences::Entry& val);
+    virtual bool root_handler(GdkEvent *event);
+    virtual bool item_handler(SPItem *item, GdkEvent *event);
+    virtual void menu_popup(GdkEvent *event, SPObject *obj = nullptr);
+
+    void set_on_buttons(GdkEvent *event);
+    bool are_buttons_1_and_3_on() const;
+    bool are_buttons_1_and_3_on(GdkEvent *event);
+
+    std::string getPrefsPath() { return _prefs_path; };
+    void enableSelectionCue (bool enable=true);
+
+    Inkscape::MessageContext *defaultMessageContext() const {
+        return message_context.get();
+    }
+
+    SPDesktop *getDesktop() { return _desktop; }
+    SPGroup *currentLayer() const;
+
+    // Commonly used CanvasItemCatchall grab/ungrab.
+    void grabCanvasEvents(Gdk::EventMask mask =
+                          Gdk::KEY_PRESS_MASK      |
+                          Gdk::BUTTON_RELEASE_MASK |
+                          Gdk::POINTER_MOTION_MASK |
+                          Gdk::BUTTON_PRESS_MASK);
+    void ungrabCanvasEvents();
+
+    /**
+     * An observer that relays pref changes to the derived classes.
+     */
+    class ToolPrefObserver: public Inkscape::Preferences::Observer {
+    public:
+        ToolPrefObserver(Glib::ustring const &path, ToolBase *ec)
+            : Inkscape::Preferences::Observer(path)
+            , ec(ec)
+        {
+        }
+
+        void notify(Inkscape::Preferences::Entry const &val) override {
+            ec->set(val);
+        }
+
+    private:
+        ToolBase * const ec;
+    };
+
+private:
+    Inkscape::Preferences::Observer *pref_observer = nullptr;
+    std::string _prefs_path;
+
+protected:
+    Glib::RefPtr<Gdk::Cursor> _cursor;
+    std::string _cursor_filename = "select.svg";
+    std::string _cursor_default = "select.svg";
+
+    gint xp = 0;           ///< where drag started
+    gint yp = 0;           ///< where drag started
+    gint tolerance = 0;
+    bool within_tolerance = false;  ///< are we still within tolerance of origin
+    bool _button1on = false;
+    bool _button2on = false;
+    bool _button3on = false;
+    SPItem *item_to_select = nullptr; ///< the item where mouse_press occurred, to
+                                      ///< be selected if this is a click not drag
+
+    Geom::Point setup_for_drag_start(GdkEvent *ev);
+
+private:
+    enum
+    {
+        PANNING_NONE = 0,          //
+        PANNING_SPACE_BUTTON1 = 1, // TODO is this mode relevant?
+        PANNING_BUTTON2 = 2,       //
+        PANNING_BUTTON3 = 3,       //
+        PANNING_SPACE = 4,
+    } panning = PANNING_NONE;
+
+public:
+    gint start_root_handler(GdkEvent *event);
+    gint tool_root_handler(GdkEvent *event);
+    gint start_item_handler(SPItem *item, GdkEvent *event);
+    gint virtual_item_handler(SPItem *item, GdkEvent *event);
+
+    /// True if we're panning with any method (space bar, middle-mouse, right-mouse+Ctrl)
+    bool is_panning() const { return panning != 0; }
+
+    /// True if we're panning with the space bar
+    bool is_space_panning() const { return panning == PANNING_SPACE || panning == PANNING_SPACE_BUTTON1; }
+
+    bool rotating_mode = false;;
+
+    std::unique_ptr<Inkscape::MessageContext> message_context;
+    Inkscape::SelCue *_selcue = nullptr;
+
+    GrDrag *_grdrag = nullptr;
+
+    ShapeEditor* shape_editor = nullptr;
+
+    bool _dse_callback_in_process = false;
+
+    bool _uses_snap = false;
+    DelayedSnapEvent *_delayed_snap_event = nullptr;
+
+    void discard_delayed_snap_event();
+    void set_cursor(std::string filename);
+    void use_cursor(Glib::RefPtr<Gdk::Cursor> cursor);
+    Glib::RefPtr<Gdk::Cursor> get_cursor(Glib::RefPtr<Gdk::Window> window, std::string filename);
+    void use_tool_cursor();
+
+    void enableGrDrag(bool enable = true);
+    bool deleteSelectedDrag(bool just_one);
+    bool hasGradientDrag() const;
+    GrDrag *get_drag() { return _grdrag; }
+
+protected:
+    bool sp_event_context_knot_mouseover() const;
+
+    void set_high_motion_precision(bool high_precision = true);
+
+    int gobble_key_events(guint keyval, guint mask) const;
+    void gobble_motion_events(guint mask) const;
+
+    SPDesktop *_desktop = nullptr;
+
+private:
+
+    bool _keyboardMove(GdkEventKey const &event, Geom::Point const &dir);
+};
+
+void sp_event_context_read(ToolBase *ec, gchar const *key);
+
+
+void sp_event_root_menu_popup(SPDesktop *desktop, SPItem *item, GdkEvent *event);
+
+void sp_event_show_modifier_tip(Inkscape::MessageContext *message_context, GdkEvent *event,
+                                gchar const *ctrl_tip, gchar const *shift_tip, gchar const *alt_tip);
+
+void init_latin_keys_group();
+guint get_latin_keyval(GdkEventKey const *event, guint *consumed_modifiers = nullptr);
+
+SPItem *sp_event_context_find_item (SPDesktop *desktop, Geom::Point const &p, bool select_under, bool into_groups);
+SPItem *sp_event_context_over_item (SPDesktop *desktop, SPItem *item, Geom::Point const &p);
+
+void sp_toggle_dropper(SPDesktop *dt);
+
+bool sp_event_context_knot_mouseover(ToolBase *ec);
+
+} // namespace Tools
+} // namespace UI
+} // namespace Inkscape
+
+#endif // SEEN_SP_EVENT_CONTEXT_H
+
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/tweak-tool.cpp b/src/ui/tools/tweak-tool.cpp
new file mode 100644
index 0000000..d87d3f2
--- /dev/null
+++ b/src/ui/tools/tweak-tool.cpp
@@ -0,0 +1,1489 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * tweaking paths without node editing
+ *
+ * Authors:
+ *   bulia byak
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "tweak-tool.h"
+
+#include <numeric>
+
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <glibmm/i18n.h>
+
+#include <2geom/circle.h>
+
+#include "context-fns.h"
+#include "desktop-events.h"
+#include "desktop-style.h"
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "filter-chemistry.h"
+#include "gradient-chemistry.h"
+#include "inkscape.h"
+#include "include/macros.h"
+#include "message-context.h"
+#include "path-chemistry.h"
+#include "selection.h"
+#include "style.h"
+
+#include "display/curve.h"
+#include "display/control/canvas-item-bpath.h"
+
+#include "livarot/Path.h"
+#include "livarot/Shape.h"
+
+#include "object/box3d.h"
+#include "object/filters/gaussian-blur.h"
+#include "object/sp-flowtext.h"
+#include "object/sp-item-transform.h"
+#include "object/sp-linear-gradient.h"
+#include "object/sp-mesh-gradient.h"
+#include "object/sp-path.h"
+#include "object/sp-radial-gradient.h"
+#include "object/sp-stop.h"
+#include "object/sp-text.h"
+
+#include "path/path-util.h"
+
+#include "svg/svg.h"
+
+#include "ui/icon-names.h"
+#include "ui/toolbar/tweak-toolbar.h"
+
+
+using Inkscape::DocumentUndo;
+
+#define DDC_RED_RGBA 0xff0000ff
+
+#define DYNA_MIN_WIDTH 1.0e-6
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+TweakTool::TweakTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/tweak", "tweak-push.svg")
+    , pressure(TC_DEFAULT_PRESSURE)
+    , dragging(false)
+    , usepressure(false)
+    , usetilt(false)
+    , width(0.2)
+    , force(0.2)
+    , fidelity(0)
+    , mode(0)
+    , is_drawing(false)
+    , is_dilating(false)
+    , has_dilated(false)
+    , dilate_area(nullptr)
+    , do_h(true)
+    , do_s(true)
+    , do_l(true)
+    , do_o(false)
+{
+    dilate_area = new Inkscape::CanvasItemBpath(desktop->getCanvasSketch());
+    dilate_area->set_stroke(0xff9900ff);
+    dilate_area->set_fill(0x0, SP_WIND_RULE_EVENODD);
+    dilate_area->hide();
+
+    this->is_drawing = false;
+
+    sp_event_context_read(this, "width");
+    sp_event_context_read(this, "mode");
+    sp_event_context_read(this, "fidelity");
+    sp_event_context_read(this, "force");
+    sp_event_context_read(this, "usepressure");
+    sp_event_context_read(this, "doh");
+    sp_event_context_read(this, "dol");
+    sp_event_context_read(this, "dos");
+    sp_event_context_read(this, "doo");
+
+    this->style_set_connection = desktop->connectSetStyle( // catch style-setting signal in this tool
+        //sigc::bind(sigc::ptr_fun(&sp_tweak_context_style_set), this)
+   		sigc::mem_fun(this, &TweakTool::set_style)
+    );
+    
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    if (prefs->getBool("/tools/tweak/selcue")) {
+        this->enableSelectionCue();
+    }
+    if (prefs->getBool("/tools/tweak/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+TweakTool::~TweakTool() {
+    this->enableGrDrag(false);
+    
+    this->style_set_connection.disconnect();
+
+    if (this->dilate_area) {
+        delete this->dilate_area;
+        this->dilate_area = nullptr;
+    }
+}
+
+static bool is_transform_mode (gint mode)
+{
+    return (mode == TWEAK_MODE_MOVE || 
+            mode == TWEAK_MODE_MOVE_IN_OUT || 
+            mode == TWEAK_MODE_MOVE_JITTER || 
+            mode == TWEAK_MODE_SCALE || 
+            mode == TWEAK_MODE_ROTATE || 
+            mode == TWEAK_MODE_MORELESS);
+}
+
+static bool is_color_mode (gint mode)
+{
+    return (mode == TWEAK_MODE_COLORPAINT || mode == TWEAK_MODE_COLORJITTER || mode == TWEAK_MODE_BLUR);
+}
+
+void TweakTool::update_cursor (bool with_shift) {
+    guint num = 0;
+    gchar *sel_message = nullptr;
+
+    if (!_desktop->selection->isEmpty()) {
+        num = (guint)boost::distance(_desktop->selection->items());
+        sel_message = g_strdup_printf(ngettext("<b>%i</b> object selected","<b>%i</b> objects selected",num), num);
+    } else {
+        sel_message = g_strdup_printf("%s", _("<b>Nothing</b> selected"));
+    }
+
+   switch (this->mode) {
+       case TWEAK_MODE_MOVE:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag to <b>move</b>."), sel_message);
+           this->set_cursor("tweak-move.svg");
+           break;
+       case TWEAK_MODE_MOVE_IN_OUT:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>move in</b>; with Shift to <b>move out</b>."), sel_message);
+           if (with_shift) {
+               this->set_cursor("tweak-move-out.svg");
+           } else {
+               this->set_cursor("tweak-move-in.svg");
+           }
+           break;
+       case TWEAK_MODE_MOVE_JITTER:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>move randomly</b>."), sel_message);
+            this->set_cursor("tweak-move-jitter.svg");
+           break;
+       case TWEAK_MODE_SCALE:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>scale down</b>; with Shift to <b>scale up</b>."), sel_message);
+           if (with_shift) {
+               this->set_cursor("tweak-scale-up.svg");
+           } else {
+               this->set_cursor("tweak-scale-down.svg");
+           }
+           break;
+       case TWEAK_MODE_ROTATE:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>rotate clockwise</b>; with Shift, <b>counterclockwise</b>."), sel_message);
+           if (with_shift) {
+               this->set_cursor("tweak-rotate-counterclockwise.svg");
+           } else {
+               this->set_cursor("tweak-rotate-clockwise.svg");
+           }
+           break;
+       case TWEAK_MODE_MORELESS:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>duplicate</b>; with Shift, <b>delete</b>."), sel_message);
+           if (with_shift) {
+               this->set_cursor("tweak-less.svg");
+           } else {
+               this->set_cursor("tweak-more.svg");
+           }
+           break;
+       case TWEAK_MODE_PUSH:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag to <b>push paths</b>."), sel_message);
+           this->set_cursor("tweak-push.svg");
+           break;
+       case TWEAK_MODE_SHRINK_GROW:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>inset paths</b>; with Shift to <b>outset</b>."), sel_message);
+           if (with_shift) {
+               this->set_cursor("tweak-outset.svg");
+           } else {
+               this->set_cursor("tweak-inset.svg");
+           }
+           break;
+       case TWEAK_MODE_ATTRACT_REPEL:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>attract paths</b>; with Shift to <b>repel</b>."), sel_message);
+           if (with_shift) {
+               this->set_cursor("tweak-repel.svg");
+           } else {
+               this->set_cursor("tweak-attract.svg");
+           }
+           break;
+       case TWEAK_MODE_ROUGHEN:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>roughen paths</b>."), sel_message);
+           this->set_cursor("tweak-roughen.svg");
+           break;
+       case TWEAK_MODE_COLORPAINT:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>paint objects</b> with color."), sel_message);
+           this->set_cursor("tweak-color.svg");
+           break;
+       case TWEAK_MODE_COLORJITTER:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>randomize colors</b>."), sel_message);
+           this->set_cursor("tweak-color.svg");
+           break;
+       case TWEAK_MODE_BLUR:
+           this->message_context->setF(Inkscape::NORMAL_MESSAGE, _("%s. Drag or click to <b>increase blur</b>; with Shift to <b>decrease</b>."), sel_message);
+           this->set_cursor("tweak-color.svg");
+           break;
+   }
+   g_free(sel_message);
+}
+
+bool TweakTool::set_style(const SPCSSAttr* css) {
+    if (this->mode == TWEAK_MODE_COLORPAINT) { // intercept color setting only in this mode
+        // we cannot store properties with uris
+        css = sp_css_attr_unset_uris(const_cast<SPCSSAttr *>(css));
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        prefs->setStyle("/tools/tweak/style", const_cast<SPCSSAttr *>(css));
+        return true;
+    }
+
+    return false;
+}
+
+void TweakTool::set(const Inkscape::Preferences::Entry& val) {
+    Glib::ustring path = val.getEntryName();
+
+    if (path == "width") {
+        this->width = CLAMP(val.getDouble(0.1), -1000.0, 1000.0);
+    } else if (path == "mode") {
+        this->mode = val.getInt();
+        this->update_cursor(false);
+    } else if (path == "fidelity") {
+        this->fidelity = CLAMP(val.getDouble(), 0.0, 1.0);
+    } else if (path == "force") {
+        this->force = CLAMP(val.getDouble(1.0), 0, 1.0);
+    } else if (path == "usepressure") {
+        this->usepressure = val.getBool();
+    } else if (path == "doh") {
+        this->do_h = val.getBool();
+    } else if (path == "dos") {
+        this->do_s = val.getBool();
+    } else if (path == "dol") {
+        this->do_l = val.getBool();
+    } else if (path == "doo") {
+        this->do_o = val.getBool();
+    }
+}
+
+static void
+sp_tweak_extinput(TweakTool *tc, GdkEvent *event)
+{
+    if (gdk_event_get_axis (event, GDK_AXIS_PRESSURE, &tc->pressure)) {
+        tc->pressure = CLAMP (tc->pressure, TC_MIN_PRESSURE, TC_MAX_PRESSURE);
+    } else {
+        tc->pressure = TC_DEFAULT_PRESSURE;
+    }
+}
+
+static double
+get_dilate_radius (TweakTool *tc)
+{
+    // 10 times the pen width:
+    return 500 * tc->width/tc->getDesktop()->current_zoom();
+}
+
+static double
+get_path_force (TweakTool *tc)
+{
+    double force = 8 * (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE)
+        /sqrt(tc->getDesktop()->current_zoom());
+    if (force > 3) {
+        force += 4 * (force - 3);
+    }
+    return force * tc->force;
+}
+
+static double
+get_move_force (TweakTool *tc)
+{
+    double force = (tc->usepressure? tc->pressure : TC_DEFAULT_PRESSURE);
+    return force * tc->force;
+}
+
+static bool
+sp_tweak_dilate_recursive (Inkscape::Selection *selection, SPItem *item, Geom::Point p, Geom::Point vector, gint mode, double radius, double force, double fidelity, bool reverse)
+{
+    bool did = false;
+
+    {
+        SPBox3D *box = dynamic_cast<SPBox3D *>(item);
+        if (box && !is_transform_mode(mode) && !is_color_mode(mode)) {
+            // convert 3D boxes to ordinary groups before tweaking their shapes
+            item = box->convert_to_group();
+            selection->add(item);
+        }
+    }
+
+    if (dynamic_cast<SPText *>(item) || dynamic_cast<SPFlowtext *>(item)) {
+    	std::vector<SPItem*> items;
+        items.push_back(item);
+        std::vector<SPItem*> selected;
+        std::vector<Inkscape::XML::Node*> to_select;
+        SPDocument *doc = item->document;
+        sp_item_list_to_curves (items, selected, to_select);
+        SPObject* newObj = doc->getObjectByRepr(to_select[0]);
+        item = dynamic_cast<SPItem *>(newObj);
+        g_assert(item != nullptr);
+        selection->add(item);
+    }
+
+    if (dynamic_cast<SPGroup *>(item) && !dynamic_cast<SPBox3D *>(item)) {
+        std::vector<SPItem *> children;
+        for (auto& child: item->children) {
+            if (dynamic_cast<SPItem *>(&child)) {
+                children.push_back(dynamic_cast<SPItem *>(&child));
+            }
+        }
+
+        for (auto i = children.rbegin(); i!= children.rend(); ++i) {
+            SPItem *child = *i; 
+            g_assert(child != nullptr);
+            if (sp_tweak_dilate_recursive (selection, child, p, vector, mode, radius, force, fidelity, reverse)) {
+                did = true;
+            }
+        }
+    } else {
+        if (mode == TWEAK_MODE_MOVE) {
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                double x = Geom::L2(a->midpoint() - p)/radius;
+                if (a->contains(p)) x = 0;
+                if (x < 1) {
+                    Geom::Point move = force * 0.5 * (cos(M_PI * x) + 1) * vector;
+                    item->move_rel(Geom::Translate(move * selection->desktop()->doc2dt().withoutTranslation()));
+                    did = true;
+                }
+            }
+
+        } else if (mode == TWEAK_MODE_MOVE_IN_OUT) {
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                double x = Geom::L2(a->midpoint() - p)/radius;
+                if (a->contains(p)) x = 0;
+                if (x < 1) {
+                    Geom::Point move = force * 0.5 * (cos(M_PI * x) + 1) * 
+                        (reverse? (a->midpoint() - p) : (p - a->midpoint()));
+                    item->move_rel(Geom::Translate(move * selection->desktop()->doc2dt().withoutTranslation()));
+                    did = true;
+                }
+            }
+
+        } else if (mode == TWEAK_MODE_MOVE_JITTER) {
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                double dp = g_random_double_range(0, M_PI*2);
+                double dr = g_random_double_range(0, radius);
+                double x = Geom::L2(a->midpoint() - p)/radius;
+                if (a->contains(p)) x = 0;
+                if (x < 1) {
+                    Geom::Point move = force * 0.5 * (cos(M_PI * x) + 1) * Geom::Point(cos(dp)*dr, sin(dp)*dr);
+                    item->move_rel(Geom::Translate(move * selection->desktop()->doc2dt().withoutTranslation()));
+                    did = true;
+                }
+            }
+
+        } else if (mode == TWEAK_MODE_SCALE) {
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                double x = Geom::L2(a->midpoint() - p)/radius;
+                if (a->contains(p)) x = 0;
+                if (x < 1) {
+                    double scale = 1 + (reverse? force : -force) * 0.05 * (cos(M_PI * x) + 1);
+                    item->scale_rel(Geom::Scale(scale, scale));
+                    did = true;
+                }
+            }
+
+        } else if (mode == TWEAK_MODE_ROTATE) {
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                double x = Geom::L2(a->midpoint() - p)/radius;
+                if (a->contains(p)) x = 0;
+                if (x < 1) {
+                    double angle = (reverse? force : -force) * 0.05 * (cos(M_PI * x) + 1) * M_PI;
+                    angle *= -selection->desktop()->yaxisdir();
+                    item->rotate_rel(Geom::Rotate(angle));
+                    did = true;
+                }
+            }
+
+        } else if (mode == TWEAK_MODE_MORELESS) {
+
+            Geom::OptRect a = item->documentVisualBounds();
+            if (a) {
+                double x = Geom::L2(a->midpoint() - p)/radius;
+                if (a->contains(p)) x = 0;
+                if (x < 1) {
+                    double prob = force * 0.5 * (cos(M_PI * x) + 1);
+                    double chance = g_random_double_range(0, 1);
+                    if (chance <= prob) {
+                        if (reverse) { // delete
+                            item->deleteObject(true, true);
+                        } else { // duplicate
+                            SPDocument *doc = item->document;
+                            Inkscape::XML::Document* xml_doc = doc->getReprDoc();
+                            Inkscape::XML::Node *old_repr = item->getRepr();
+                            SPObject *old_obj = doc->getObjectByRepr(old_repr);
+                            Inkscape::XML::Node *parent = old_repr->parent();
+                            Inkscape::XML::Node *copy = old_repr->duplicate(xml_doc);
+                            parent->appendChild(copy);
+                            SPObject *new_obj = doc->getObjectByRepr(copy);
+                            if (selection->includes(old_obj)) {
+                                selection->add(new_obj);
+                            }
+                            Inkscape::GC::release(copy);
+                        }
+                        did = true;
+                    }
+                }
+            }
+
+        } else if (dynamic_cast<SPPath *>(item) || dynamic_cast<SPShape *>(item)) {
+
+            Inkscape::XML::Node *newrepr = nullptr;
+            gint pos = 0;
+            Inkscape::XML::Node *parent = nullptr;
+            char const *id = nullptr;
+            if (!dynamic_cast<SPPath *>(item)) {
+                newrepr = sp_selected_item_to_curved_repr(item, 0);
+                if (!newrepr) {
+                    return false;
+                }
+
+                // remember the position of the item
+                pos = item->getRepr()->position();
+                // remember parent
+                parent = item->getRepr()->parent();
+                // remember id
+                id = item->getRepr()->attribute("id");
+            }
+
+            // skip those paths whose bboxes are entirely out of reach with our radius
+            Geom::OptRect bbox = item->documentVisualBounds();
+            if (bbox) {
+                bbox->expandBy(radius);
+                if (!bbox->contains(p)) {
+                    return false;
+                }
+            }
+
+            Path *orig = Path_for_item(item, false);
+            if (orig == nullptr) {
+                return false;
+            }
+
+            Path *res = new Path;
+            res->SetBackData(false);
+
+            Shape *theShape = new Shape;
+            Shape *theRes = new Shape;
+            Geom::Affine i2doc(item->i2doc_affine());
+
+            orig->ConvertWithBackData((0.08 - (0.07 * fidelity)) / i2doc.descrim()); // default 0.059
+            orig->Fill(theShape, 0);
+
+            SPCSSAttr *css = sp_repr_css_attr(item->getRepr(), "style");
+            gchar const *val = sp_repr_css_property(css, "fill-rule", nullptr);
+            if (val && strcmp(val, "nonzero") == 0) {
+                theRes->ConvertToShape(theShape, fill_nonZero);
+            } else if (val && strcmp(val, "evenodd") == 0) {
+                theRes->ConvertToShape(theShape, fill_oddEven);
+            } else {
+                theRes->ConvertToShape(theShape, fill_nonZero);
+            }
+
+            if (Geom::L2(vector) != 0) {
+                vector = 1/Geom::L2(vector) * vector;
+            }
+
+            bool did_this = false;
+            if (mode == TWEAK_MODE_SHRINK_GROW) {
+                if (theShape->MakeTweak(tweak_mode_grow, theRes,
+                        reverse? force : -force,
+                        join_straight, 4.0,
+                        true, p, Geom::Point(0,0), radius, &i2doc) == 0) // 0 means the shape was actually changed
+                    did_this = true;
+            } else if (mode == TWEAK_MODE_ATTRACT_REPEL) {
+                if (theShape->MakeTweak(tweak_mode_repel, theRes,
+                        reverse? force : -force,
+                        join_straight, 4.0,
+                        true, p, Geom::Point(0,0), radius, &i2doc) == 0)
+                    did_this = true;
+            } else if (mode == TWEAK_MODE_PUSH) {
+                if (theShape->MakeTweak(tweak_mode_push, theRes,
+                        1.0,
+                        join_straight, 4.0,
+                        true, p, force*2*vector, radius, &i2doc) == 0)
+                    did_this = true;
+            } else if (mode == TWEAK_MODE_ROUGHEN) {
+                if (theShape->MakeTweak(tweak_mode_roughen, theRes,
+                        force,
+                        join_straight, 4.0,
+                        true, p, Geom::Point(0,0), radius, &i2doc) == 0)
+                    did_this = true;
+            }
+
+            // the rest only makes sense if we actually changed the path
+            if (did_this) {
+                theRes->ConvertToShape(theShape, fill_positive);
+
+                res->Reset();
+                theRes->ConvertToForme(res);
+
+                double th_max = (0.6 - 0.59*sqrt(fidelity)) / i2doc.descrim();
+                double threshold = MAX(th_max, th_max*force);
+                res->ConvertEvenLines(threshold);
+                res->Simplify(threshold / (selection->desktop()->current_zoom()));
+
+                if (newrepr) { // converting to path, need to replace the repr
+                    bool is_selected = selection->includes(item);
+                    if (is_selected) {
+                        selection->remove(item);
+                    }
+
+                    // It's going to resurrect, so we delete without notifying listeners.
+                    item->deleteObject(false);
+
+                    // restore id
+                    newrepr->setAttribute("id", id);
+                    // add the new repr to the parent
+                    // move to the saved position
+                    parent->addChildAtPos(newrepr, pos);
+
+                    if (is_selected)
+                        selection->add(newrepr);
+                }
+
+                if (res->descr_cmd.size() > 1) {
+                    gchar *str = res->svg_dump_path();
+                    if (newrepr) {
+                        newrepr->setAttribute("d", str);
+                    } else {
+                        SPLPEItem *lpeitem = dynamic_cast<SPLPEItem *>(item);
+                        if (lpeitem && lpeitem->hasPathEffectRecursive()) {
+                            item->setAttribute("inkscape:original-d", str);
+                        } else {
+                            item->setAttribute("d", str);
+                        }
+                    }
+                    g_free(str);
+                } else {
+                    // TODO: if there's 0 or 1 node left, delete this path altogether
+                }
+
+                if (newrepr) {
+                    Inkscape::GC::release(newrepr);
+                    newrepr = nullptr;
+                }
+            }
+
+            delete theShape;
+            delete theRes;
+            delete orig;
+            delete res;
+
+            if (did_this) {
+                did = true;
+            }
+        }
+
+    }
+
+    return did;
+}
+
+    static void
+tweak_colorpaint (float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
+{
+    float rgb_g[3];
+
+    if (!do_h || !do_s || !do_l) {
+        float hsl_g[3];
+        SPColor::rgb_to_hsl_floatv (hsl_g, SP_RGBA32_R_F(goal), SP_RGBA32_G_F(goal), SP_RGBA32_B_F(goal));
+        float hsl_c[3];
+        SPColor::rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
+        if (!do_h) {
+            hsl_g[0] = hsl_c[0];
+        }
+        if (!do_s) {
+            hsl_g[1] = hsl_c[1];
+        }
+        if (!do_l) {
+            hsl_g[2] = hsl_c[2];
+        }
+        SPColor::hsl_to_rgb_floatv (rgb_g, hsl_g[0], hsl_g[1], hsl_g[2]);
+    } else {
+        rgb_g[0] = SP_RGBA32_R_F(goal);
+        rgb_g[1] = SP_RGBA32_G_F(goal);
+        rgb_g[2] = SP_RGBA32_B_F(goal);
+    }
+
+    for (int i = 0; i < 3; i++) {
+        double d = rgb_g[i] - color[i];
+        color[i] += d * force;
+    }
+}
+
+    static void
+tweak_colorjitter (float *color, double force, bool do_h, bool do_s, bool do_l)
+{
+    float hsl_c[3];
+    SPColor::rgb_to_hsl_floatv (hsl_c, color[0], color[1], color[2]);
+
+    if (do_h) {
+        hsl_c[0] += g_random_double_range(-0.5, 0.5) * force;
+        if (hsl_c[0] > 1) {
+            hsl_c[0] -= 1;
+        }
+        if (hsl_c[0] < 0) {
+            hsl_c[0] += 1;
+        }
+    }
+    if (do_s) {
+        hsl_c[1] += g_random_double_range(-hsl_c[1], 1 - hsl_c[1]) * force;
+    }
+    if (do_l) {
+        hsl_c[2] += g_random_double_range(-hsl_c[2], 1 - hsl_c[2]) * force;
+    }
+
+    SPColor::hsl_to_rgb_floatv (color, hsl_c[0], hsl_c[1], hsl_c[2]);
+}
+
+    static void
+tweak_color (guint mode, float *color, guint32 goal, double force, bool do_h, bool do_s, bool do_l)
+{
+    if (mode == TWEAK_MODE_COLORPAINT) {
+        tweak_colorpaint (color, goal, force, do_h, do_s, do_l);
+    } else if (mode == TWEAK_MODE_COLORJITTER) {
+        tweak_colorjitter (color, force, do_h, do_s, do_l);
+    }
+}
+
+    static void
+tweak_opacity (guint mode, SPIScale24 *style_opacity, double opacity_goal, double force)
+{
+    double opacity = SP_SCALE24_TO_FLOAT (style_opacity->value);
+
+    if (mode == TWEAK_MODE_COLORPAINT) {
+        double d = opacity_goal - opacity;
+        opacity += d * force;
+    } else if (mode == TWEAK_MODE_COLORJITTER) {
+        opacity += g_random_double_range(-opacity, 1 - opacity) * force;
+    }
+
+    style_opacity->value = SP_SCALE24_FROM_FLOAT(opacity);
+}
+
+
+    static double
+tweak_profile (double dist, double radius)
+{
+    if (radius == 0) {
+        return 0;
+    }
+    double x = dist / radius;
+    double alpha = 1;
+    if (x >= 1) {
+        return 0;
+    } else if (x <= 0) {
+        return 1;
+    } else {
+        return (0.5 * cos (M_PI * (pow(x, alpha))) + 0.5);
+    }
+}
+
+static void tweak_colors_in_gradient(SPItem *item, Inkscape::PaintTarget fill_or_stroke,
+    guint32 const rgb_goal, Geom::Point p_w, double radius, double force, guint mode,
+    bool do_h, bool do_s, bool do_l, bool /*do_o*/)
+{
+    SPGradient *gradient = getGradient(item, fill_or_stroke);
+
+    if (!gradient || !dynamic_cast<SPGradient *>(gradient)) {
+        return;
+    }
+
+    Geom::Affine i2d (item->i2doc_affine ());
+    Geom::Point p = p_w * i2d.inverse();
+    p *= (gradient->gradientTransform).inverse();
+    // now p is in gradient's original coordinates
+
+    SPLinearGradient *lg = dynamic_cast<SPLinearGradient *>(gradient);
+    SPRadialGradient *rg = dynamic_cast<SPRadialGradient *>(gradient);
+    if (lg || rg) {
+
+        double pos = 0;
+        double r = 0;
+
+        if (lg) {
+            Geom::Point p1(lg->x1.computed, lg->y1.computed);
+            Geom::Point p2(lg->x2.computed, lg->y2.computed);
+            Geom::Point pdiff(p2 - p1);
+            double vl = Geom::L2(pdiff);
+
+            // This is the matrix which moves and rotates the gradient line
+            // so it's oriented along the X axis:
+            Geom::Affine norm = Geom::Affine(Geom::Translate(-p1)) *
+                Geom::Affine(Geom::Rotate(-atan2(pdiff[Geom::Y], pdiff[Geom::X])));
+
+            // Transform the mouse point by it to find out its projection onto the gradient line:
+            Geom::Point pnorm = p * norm;
+
+            // Scale its X coordinate to match the length of the gradient line:
+            pos = pnorm[Geom::X] / vl;
+            // Calculate radius in length-of-gradient-line units
+            r = radius / vl;
+
+        }
+        if (rg) {
+            Geom::Point c (rg->cx.computed, rg->cy.computed);
+            pos = Geom::L2(p - c) / rg->r.computed;
+            r = radius / rg->r.computed;
+        }
+
+        // Normalize pos to 0..1, taking into account gradient spread:
+        double pos_e = pos;
+        if (gradient->getSpread() == SP_GRADIENT_SPREAD_PAD) {
+            if (pos > 1) {
+                pos_e = 1;
+            }
+            if (pos < 0) {
+                pos_e = 0;
+            }
+        } else if (gradient->getSpread() == SP_GRADIENT_SPREAD_REPEAT) {
+            if (pos > 1 || pos < 0) {
+                pos_e = pos - floor(pos);
+            }
+        } else if (gradient->getSpread() == SP_GRADIENT_SPREAD_REFLECT) {
+            if (pos > 1 || pos < 0) {
+                bool odd = ((int)(floor(pos)) % 2 == 1);
+                pos_e = pos - floor(pos);
+                if (odd) {
+                    pos_e = 1 - pos_e;
+                }
+            }
+        }
+
+        SPGradient *vector = sp_gradient_get_forked_vector_if_necessary(gradient, false);
+
+        double offset_l = 0;
+        double offset_h = 0;
+        SPObject *child_prev = nullptr;
+        for (auto& child: vector->children) {
+            SPStop *stop = dynamic_cast<SPStop *>(&child);
+            if (!stop) {
+                continue;
+            }
+
+            offset_h = stop->offset;
+
+            if (child_prev) {
+                SPStop *prevStop = dynamic_cast<SPStop *>(child_prev);
+                g_assert(prevStop != nullptr);
+
+                if (offset_h - offset_l > r && pos_e >= offset_l && pos_e <= offset_h) {
+                    // the summit falls in this interstop, and the radius is small,
+                    // so it only affects the ends of this interstop;
+                    // distribute the force between the two endstops so that they
+                    // get all the painting even if they are not touched by the brush
+                    tweak_color (mode, stop->getColor().v.c, rgb_goal,
+                        force * (pos_e - offset_l) / (offset_h - offset_l),
+                        do_h, do_s, do_l);
+                    tweak_color(mode, prevStop->getColor().v.c, rgb_goal,
+                        force * (offset_h - pos_e) / (offset_h - offset_l),
+                        do_h, do_s, do_l);
+                    stop->updateRepr();
+                    child_prev->updateRepr();
+                    break;
+                } else {
+                    // wide brush, may affect more than 2 stops,
+                    // paint each stop by the force from the profile curve
+                    if (offset_l <= pos_e && offset_l > pos_e - r) {
+                        tweak_color(mode, prevStop->getColor().v.c, rgb_goal,
+                            force * tweak_profile (fabs (pos_e - offset_l), r),
+                            do_h, do_s, do_l);
+                        child_prev->updateRepr();
+                    }
+
+                    if (offset_h >= pos_e && offset_h < pos_e + r) {
+                        tweak_color (mode, stop->getColor().v.c, rgb_goal,
+                            force * tweak_profile (fabs (pos_e - offset_h), r),
+                            do_h, do_s, do_l);
+                        stop->updateRepr();
+                    }
+                }
+            }
+
+            offset_l = offset_h;
+            child_prev = &child;
+        }
+    } else {
+        // Mesh
+        SPMeshGradient *mg = dynamic_cast<SPMeshGradient *>(gradient);
+        if (mg) {
+            SPMeshGradient *mg_array = dynamic_cast<SPMeshGradient *>(mg->getArray());
+            SPMeshNodeArray *array = &(mg_array->array);
+            // Every third node is a corner node
+            for( unsigned i=0; i < array->nodes.size(); i+=3 ) {
+                for( unsigned j=0; j < array->nodes[i].size(); j+=3 ) {
+                    SPStop *stop = array->nodes[i][j]->stop;
+                    double distance = Geom::L2(Geom::Point(p - array->nodes[i][j]->p)); 
+                    tweak_color (mode, stop->getColor().v.c, rgb_goal,
+                        force * tweak_profile (distance, radius), do_h, do_s, do_l);
+                    stop->updateRepr();
+                }
+            }
+        }
+    }
+}
+
+    static bool
+sp_tweak_color_recursive (guint mode, SPItem *item, SPItem *item_at_point,
+    guint32 fill_goal, bool do_fill,
+    guint32 stroke_goal, bool do_stroke,
+    float opacity_goal, bool do_opacity,
+    bool do_blur, bool reverse,
+    Geom::Point p, double radius, double force,
+    bool do_h, bool do_s, bool do_l, bool do_o)
+{
+    bool did = false;
+
+    if (dynamic_cast<SPGroup *>(item)) {
+        for (auto& child: item->children) {
+            SPItem *childItem = dynamic_cast<SPItem *>(&child);
+            if (childItem) {
+                if (sp_tweak_color_recursive (mode, childItem, item_at_point,
+                        fill_goal, do_fill,
+                        stroke_goal, do_stroke,
+                        opacity_goal, do_opacity,
+                        do_blur, reverse,
+                        p, radius, force, do_h, do_s, do_l, do_o)) {
+                    did = true;
+                }
+            }
+        }
+
+    } else {
+        SPStyle *style = item->style;
+        if (!style) {
+            return false;
+        }
+        Geom::OptRect bbox = item->documentGeometricBounds();
+        if (!bbox) {
+            return false;
+        }
+
+        Geom::Rect brush(p - Geom::Point(radius, radius), p + Geom::Point(radius, radius));
+
+        Geom::Point center = bbox->midpoint();
+        double this_force;
+
+        // if item == item_at_point, use max force
+        if (item == item_at_point) {
+            this_force = force;
+            // else if no overlap of bbox and brush box, skip:
+        } else if (!bbox->intersects(brush)) {
+            return false;
+            //TODO:
+            // else if object > 1.5 brush: test 4/8/16 points in the brush on hitting the object, choose max
+            //} else if (bbox->maxExtent() > 3 * radius) {
+            //}
+            // else if object > 0.5 brush: test 4 corners of bbox and center on being in the brush, choose max
+            // else if still smaller, then check only the object center:
+    } else {
+        this_force = force * tweak_profile (Geom::L2 (p - center), radius);
+    }
+
+    if (this_force > 0.002) {
+
+        if (do_blur) {
+            Geom::OptRect bbox = item->documentGeometricBounds();
+            if (!bbox) {
+                return did;
+            }
+
+            double blur_now = 0;
+            Geom::Affine i2dt = item->i2dt_affine ();
+            if (style->filter.set && style->getFilter()) {
+                //cycle through filter primitives
+                for (auto& primitive_obj: style->getFilter()->children) {
+                    SPFilterPrimitive *primitive = dynamic_cast<SPFilterPrimitive *>(&primitive_obj);
+                    if (primitive) {
+                        //if primitive is gaussianblur
+                        SPGaussianBlur * spblur = dynamic_cast<SPGaussianBlur *>(primitive);
+                        if (spblur) {
+                            float num = spblur->stdDeviation.getNumber();
+                            blur_now += num * i2dt.descrim(); // sum all blurs in the filter
+                        }
+                    }
+                }
+            }
+            double perimeter = bbox->dimensions()[Geom::X] + bbox->dimensions()[Geom::Y];
+            blur_now = blur_now / perimeter;
+
+            double blur_new;
+            if (reverse) {
+                blur_new = blur_now - 0.06 * force;
+            } else {
+                blur_new = blur_now + 0.06 * force;
+            }
+            if (blur_new < 0.0005 && blur_new < blur_now) {
+                blur_new = 0;
+            }
+            if (blur_new == 0) {
+                remove_filter(item, false);
+            } else {
+                double radius = blur_new * perimeter;
+                SPFilter *filter = modify_filter_gaussian_blur_from_item(item->document, item, radius);
+                sp_style_set_property_url(item, "filter", filter, false);
+            }
+            return true; // do not do colors, blur is a separate mode
+        }
+
+        if (do_fill) {
+            if (style->fill.isPaintserver()) {
+                tweak_colors_in_gradient(item, Inkscape::FOR_FILL, fill_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
+                did = true;
+            } else if (style->fill.isColor()) {
+                tweak_color (mode, style->fill.value.color.v.c, fill_goal, this_force, do_h, do_s, do_l);
+                item->updateRepr();
+                did = true;
+            }
+        }
+        if (do_stroke) {
+            if (style->stroke.isPaintserver()) {
+                tweak_colors_in_gradient(item, Inkscape::FOR_STROKE, stroke_goal, p, radius, this_force, mode, do_h, do_s, do_l, do_o);
+                did = true;
+            } else if (style->stroke.isColor()) {
+                tweak_color (mode, style->stroke.value.color.v.c, stroke_goal, this_force, do_h, do_s, do_l);
+                item->updateRepr();
+                did = true;
+            }
+        }
+        if (do_opacity && do_o) {
+            tweak_opacity (mode, &style->opacity, opacity_goal, this_force);
+        }
+    }
+}
+
+return did;
+}
+
+
+    static bool
+sp_tweak_dilate (TweakTool *tc, Geom::Point event_p, Geom::Point p, Geom::Point vector, bool reverse)
+{
+    SPDesktop *desktop = tc->getDesktop();
+    Inkscape::Selection *selection = desktop->getSelection();
+
+    if (selection->isEmpty()) {
+        return false;
+    }
+
+    bool did = false;
+    double radius = get_dilate_radius(tc);
+
+    SPItem *item_at_point = tc->getDesktop()->getItemAtPoint(event_p, TRUE);
+
+    bool do_fill = false, do_stroke = false, do_opacity = false;
+    guint32 fill_goal = sp_desktop_get_color_tool(desktop, "/tools/tweak", true, &do_fill);
+    guint32 stroke_goal = sp_desktop_get_color_tool(desktop, "/tools/tweak", false, &do_stroke);
+    double opacity_goal = sp_desktop_get_master_opacity_tool(desktop, "/tools/tweak", &do_opacity);
+    if (reverse) {
+#if 0
+        // HSL inversion 
+        float hsv[3];
+        float rgb[3];
+        SPColor::rgb_to_hsv_floatv (hsv, 
+            SP_RGBA32_R_F(fill_goal),
+            SP_RGBA32_G_F(fill_goal),
+            SP_RGBA32_B_F(fill_goal));
+        SPColor::hsv_to_rgb_floatv (rgb, hsv[0]<.5? hsv[0]+.5 : hsv[0]-.5, 1 - hsv[1], 1 - hsv[2]);
+        fill_goal = SP_RGBA32_F_COMPOSE(rgb[0], rgb[1], rgb[2], 1);
+        SPColor::rgb_to_hsv_floatv (hsv, 
+            SP_RGBA32_R_F(stroke_goal),
+            SP_RGBA32_G_F(stroke_goal),
+            SP_RGBA32_B_F(stroke_goal));
+        SPColor::hsv_to_rgb_floatv (rgb, hsv[0]<.5? hsv[0]+.5 : hsv[0]-.5, 1 - hsv[1], 1 - hsv[2]);
+        stroke_goal = SP_RGBA32_F_COMPOSE(rgb[0], rgb[1], rgb[2], 1);
+#else
+        // RGB inversion 
+        fill_goal = SP_RGBA32_U_COMPOSE(
+            (255 - SP_RGBA32_R_U(fill_goal)),
+            (255 - SP_RGBA32_G_U(fill_goal)),
+            (255 - SP_RGBA32_B_U(fill_goal)),
+            (255 - SP_RGBA32_A_U(fill_goal)));
+        stroke_goal = SP_RGBA32_U_COMPOSE(
+            (255 - SP_RGBA32_R_U(stroke_goal)),
+            (255 - SP_RGBA32_G_U(stroke_goal)),
+            (255 - SP_RGBA32_B_U(stroke_goal)),
+            (255 - SP_RGBA32_A_U(stroke_goal)));
+#endif
+        opacity_goal = 1 - opacity_goal;
+    }
+
+    double path_force = get_path_force(tc);
+    if (radius == 0 || path_force == 0) {
+        return false;
+    }
+    double move_force = get_move_force(tc);
+    double color_force = MIN(sqrt(path_force)/20.0, 1);
+
+    //    auto items= selection->items();
+    std::vector<SPItem*> items(selection->items().begin(), selection->items().end());
+    for(auto item : items){
+        if (is_color_mode (tc->mode)) {
+            if (do_fill || do_stroke || do_opacity) {
+                if (sp_tweak_color_recursive (tc->mode, item, item_at_point,
+                        fill_goal, do_fill,
+                        stroke_goal, do_stroke,
+                        opacity_goal, do_opacity,
+                        tc->mode == TWEAK_MODE_BLUR, reverse,
+                        p, radius, color_force, tc->do_h, tc->do_s, tc->do_l, tc->do_o)) {
+                    did = true;
+                }
+            }
+        } else if (is_transform_mode(tc->mode)) {
+            if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, move_force, tc->fidelity, reverse)) {
+                did = true;
+            }
+        } else {
+            if (sp_tweak_dilate_recursive (selection, item, p, vector, tc->mode, radius, path_force, tc->fidelity, reverse)) {
+                did = true;
+            }
+        }
+    }
+
+    return did;
+}
+
+    static void
+sp_tweak_update_area (TweakTool *tc)
+{
+    double radius = get_dilate_radius(tc);
+    Geom::Affine const sm (Geom::Scale(radius, radius) * Geom::Translate(tc->getDesktop()->point()));
+    
+    Geom::PathVector path = Geom::Path(Geom::Circle(0,0,1)); // Unit circle centered at origin.
+    path *= sm;
+    tc->dilate_area->set_bpath(path);
+    tc->dilate_area->show();
+}
+
+    static void
+sp_tweak_switch_mode (TweakTool *tc, gint mode, bool with_shift)
+{
+    auto tb = dynamic_cast<UI::Toolbar::TweakToolbar*>(tc->getDesktop()->get_toolbar_by_name("TweakToolbar"));
+
+    if(tb) {
+        tb->set_mode(mode);
+    } else {
+        std::cerr << "Could not access Tweak toolbar" << std::endl;
+    }
+
+    // need to set explicitly, because the prefs may not have changed by the previous
+    tc->mode = mode;
+    tc->update_cursor(with_shift);
+}
+
+    static void
+sp_tweak_switch_mode_temporarily (TweakTool *tc, gint mode, bool with_shift)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    // Juggling about so that prefs have the old value but tc->mode and the button show new mode:
+    gint now_mode = prefs->getInt("/tools/tweak/mode", 0);
+
+    auto tb = dynamic_cast<UI::Toolbar::TweakToolbar*>(tc->getDesktop()->get_toolbar_by_name("TweakToolbar"));
+
+    if(tb) {
+        tb->set_mode(mode);
+    } else {
+        std::cerr << "Could not access Tweak toolbar" << std::endl;
+    }
+
+    // button has changed prefs, restore
+    prefs->setInt("/tools/tweak/mode", now_mode);
+    // changing prefs changed tc->mode, restore back :
+    tc->mode = mode;
+    tc->update_cursor(with_shift);
+}
+
+bool TweakTool::root_handler(GdkEvent* event) {
+    gint ret = FALSE;
+
+    switch (event->type) {
+        case GDK_ENTER_NOTIFY:
+            dilate_area->show();
+            break;
+        case GDK_LEAVE_NOTIFY:
+            dilate_area->hide();
+            break;
+        case GDK_BUTTON_PRESS:
+            if (event->button.button == 1) {
+                if (Inkscape::have_viable_layer(_desktop, defaultMessageContext()) == false) {
+                    return TRUE;
+                }
+
+                Geom::Point const button_w(event->button.x,
+                                         event->button.y);
+                Geom::Point const button_dt(_desktop->w2d(button_w));
+                this->last_push = _desktop->dt2doc(button_dt);
+
+                sp_tweak_extinput(this, event);
+
+                this->is_drawing = true;
+                this->is_dilating = true;
+                this->has_dilated = false;
+
+                ret = TRUE;
+            }
+            break;
+        case GDK_MOTION_NOTIFY:
+        {
+            Geom::Point const motion_w(event->motion.x,
+                                     event->motion.y);
+            Geom::Point motion_dt(_desktop->w2d(motion_w));
+            Geom::Point motion_doc(_desktop->dt2doc(motion_dt));
+            sp_tweak_extinput(this, event);
+
+            // draw the dilating cursor
+            double radius = get_dilate_radius(this);
+            Geom::Affine const sm(Geom::Scale(radius, radius) * Geom::Translate(_desktop->w2d(motion_w)));
+            Geom::PathVector path = Geom::Path(Geom::Circle(0,0,1)); // Unit circle centered at origin.
+            path *= sm;
+            dilate_area->set_bpath(path);
+            dilate_area->show();
+
+            guint num = 0;
+            if (!_desktop->selection->isEmpty()) {
+                num = (guint)boost::distance(_desktop->selection->items());
+            }
+            if (num == 0) {
+                this->message_context->flash(Inkscape::ERROR_MESSAGE, _("<b>Nothing selected!</b> Select objects to tweak."));
+            }
+
+            // dilating:
+            if (this->is_drawing && ( event->motion.state & GDK_BUTTON1_MASK )) {
+                sp_tweak_dilate (this, motion_w, motion_doc, motion_doc - this->last_push, event->button.state & GDK_SHIFT_MASK? true : false);
+                //this->last_push = motion_doc;
+                this->has_dilated = true;
+                // it's slow, so prevent clogging up with events
+                gobble_motion_events(GDK_BUTTON1_MASK);
+                return TRUE;
+            }
+
+        }
+        break;
+        case GDK_BUTTON_RELEASE:
+        {
+            Geom::Point const motion_w(event->button.x, event->button.y);
+            Geom::Point const motion_dt(_desktop->w2d(motion_w));
+
+            this->is_drawing = false;
+
+            if (this->is_dilating && event->button.button == 1) {
+                if (!this->has_dilated) {
+                    // if we did not rub, do a light tap
+                    this->pressure = 0.03;
+                    sp_tweak_dilate(this, motion_w, _desktop->dt2doc(motion_dt), Geom::Point(0, 0), MOD__SHIFT(event));
+                }
+                this->is_dilating = false;
+                this->has_dilated = false;
+                Glib::ustring text;
+                switch (this->mode) {
+                    case TWEAK_MODE_MOVE:
+                        text = _("Move tweak");
+                        break;
+                    case TWEAK_MODE_MOVE_IN_OUT:
+                        text = _("Move in/out tweak");
+                        break;
+                    case TWEAK_MODE_MOVE_JITTER:
+                        text = _("Move jitter tweak");
+                        break;
+                    case TWEAK_MODE_SCALE:
+                        text = _("Scale tweak");
+                        break;
+                    case TWEAK_MODE_ROTATE:
+                        text = _("Rotate tweak");
+                        break;
+                    case TWEAK_MODE_MORELESS:
+                        text = _("Duplicate/delete tweak");
+                        break;
+                    case TWEAK_MODE_PUSH:
+                        text = _("Push path tweak");
+                        break;
+                    case TWEAK_MODE_SHRINK_GROW:
+                        text = _("Shrink/grow path tweak");
+                        break;
+                    case TWEAK_MODE_ATTRACT_REPEL:
+                        text = _("Attract/repel path tweak");
+                        break;
+                    case TWEAK_MODE_ROUGHEN:
+                        text = _("Roughen path tweak");
+                        break;
+                    case TWEAK_MODE_COLORPAINT:
+                        text = _("Color paint tweak");
+                        break;
+                    case TWEAK_MODE_COLORJITTER:
+                        text = _("Color jitter tweak");
+                        break;
+                    case TWEAK_MODE_BLUR:
+                        text = _("Blur tweak");
+                        break;
+                }
+                DocumentUndo::done(_desktop->getDocument(), text.c_str(), INKSCAPE_ICON("tool-tweak"));
+            }
+            break;
+        }
+        case GDK_KEY_PRESS:
+        {
+            switch (get_latin_keyval (&event->key)) {
+                case GDK_KEY_m:
+                case GDK_KEY_M:
+                case GDK_KEY_0:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_MOVE, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_i:
+                case GDK_KEY_I:
+                case GDK_KEY_1:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_MOVE_IN_OUT, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_z:
+                case GDK_KEY_Z:
+                case GDK_KEY_2:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_MOVE_JITTER, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_less:
+                case GDK_KEY_comma:
+                case GDK_KEY_greater:
+                case GDK_KEY_period:
+                case GDK_KEY_3:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_SCALE, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_bracketright:
+                case GDK_KEY_bracketleft:
+                case GDK_KEY_4:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_ROTATE, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_d:
+                case GDK_KEY_D:
+                case GDK_KEY_5:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_MORELESS, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_p:
+                case GDK_KEY_P:
+                case GDK_KEY_6:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_PUSH, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_s:
+                case GDK_KEY_S:
+                case GDK_KEY_7:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_SHRINK_GROW, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_a:
+                case GDK_KEY_A:
+                case GDK_KEY_8:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_ATTRACT_REPEL, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_r:
+                case GDK_KEY_R:
+                case GDK_KEY_9:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_ROUGHEN, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_c:
+                case GDK_KEY_C:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_COLORPAINT, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_j:
+                case GDK_KEY_J:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_COLORJITTER, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_b:
+                case GDK_KEY_B:
+                    if (MOD__SHIFT_ONLY(event)) {
+                        sp_tweak_switch_mode(this, TWEAK_MODE_BLUR, MOD__SHIFT(event));
+                        ret = TRUE;
+                    }
+                    break;
+
+                case GDK_KEY_Up:
+                case GDK_KEY_KP_Up:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->force += 0.05;
+                        if (this->force > 1.0) {
+                            this->force = 1.0;
+                        }
+                        _desktop->setToolboxAdjustmentValue("tweak-force", this->force * 100);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Down:
+                case GDK_KEY_KP_Down:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->force -= 0.05;
+                        if (this->force < 0.0) {
+                            this->force = 0.0;
+                        }
+                        _desktop->setToolboxAdjustmentValue("tweak-force", this->force * 100);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Right:
+                case GDK_KEY_KP_Right:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->width += 0.01;
+                        if (this->width > 1.0) {
+                            this->width = 1.0;
+                        }
+                        _desktop->setToolboxAdjustmentValue ("tweak-width", this->width * 100); // the same spinbutton is for alt+x
+                        sp_tweak_update_area(this);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Left:
+                case GDK_KEY_KP_Left:
+                    if (!MOD__CTRL_ONLY(event)) {
+                        this->width -= 0.01;
+                        if (this->width < 0.01) {
+                            this->width = 0.01;
+                        }
+                        _desktop->setToolboxAdjustmentValue("tweak-width", this->width * 100);
+                        sp_tweak_update_area(this);
+                        ret = TRUE;
+                    }
+                    break;
+                case GDK_KEY_Home:
+                case GDK_KEY_KP_Home:
+                    this->width = 0.01;
+                    _desktop->setToolboxAdjustmentValue("tweak-width", this->width * 100);
+                    sp_tweak_update_area(this);
+                    ret = TRUE;
+                    break;
+                case GDK_KEY_End:
+                case GDK_KEY_KP_End:
+                    this->width = 1.0;
+                    _desktop->setToolboxAdjustmentValue("tweak-width", this->width * 100);
+                    sp_tweak_update_area(this);
+                    ret = TRUE;
+                    break;
+                case GDK_KEY_x:
+                case GDK_KEY_X:
+                    if (MOD__ALT_ONLY(event)) {
+                        _desktop->setToolboxFocusTo("tweak-width");
+                        ret = TRUE;
+                    }
+                    break;
+
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                    this->update_cursor(true);
+                    break;
+
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                    sp_tweak_switch_mode_temporarily(this, TWEAK_MODE_SHRINK_GROW, MOD__SHIFT(event));
+                    break;
+                case GDK_KEY_Delete:
+                case GDK_KEY_KP_Delete:
+                case GDK_KEY_BackSpace:
+                    ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+                    break;
+
+                default:
+                    break;
+            }
+            break;
+        }
+        case GDK_KEY_RELEASE: {
+            Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+            switch (get_latin_keyval(&event->key)) {
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                    this->update_cursor(false);
+                    break;
+                case GDK_KEY_Control_L:
+                case GDK_KEY_Control_R:
+                    sp_tweak_switch_mode (this, prefs->getInt("/tools/tweak/mode"), MOD__SHIFT(event));
+                    this->message_context->clear();
+                    break;
+                default:
+                    sp_tweak_switch_mode (this, prefs->getInt("/tools/tweak/mode"), MOD__SHIFT(event));
+                    break;
+            }
+        }
+        default:
+            break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/tweak-tool.h b/src/ui/tools/tweak-tool.h
new file mode 100644
index 0000000..d185666
--- /dev/null
+++ b/src/ui/tools/tweak-tool.h
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_TWEAK_CONTEXT_H__
+#define __SP_TWEAK_CONTEXT_H__
+
+/*
+ * tweaking paths without node editing
+ *
+ * Authors:
+ *   bulia byak
+ *
+ * Copyright (C) 2007 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/tool-base.h"
+#include <2geom/point.h>
+
+#define SAMPLING_SIZE 8        /* fixme: ?? */
+
+#define TC_MIN_PRESSURE      0.0
+#define TC_MAX_PRESSURE      1.0
+#define TC_DEFAULT_PRESSURE  0.35
+
+namespace Inkscape {
+
+class CanvasItemBpath;
+
+namespace UI {
+namespace Tools {
+
+enum {
+    TWEAK_MODE_MOVE,
+    TWEAK_MODE_MOVE_IN_OUT,
+    TWEAK_MODE_MOVE_JITTER,
+    TWEAK_MODE_SCALE,
+    TWEAK_MODE_ROTATE,
+    TWEAK_MODE_MORELESS,
+    TWEAK_MODE_PUSH,
+    TWEAK_MODE_SHRINK_GROW,
+    TWEAK_MODE_ATTRACT_REPEL,
+    TWEAK_MODE_ROUGHEN,
+    TWEAK_MODE_COLORPAINT,
+    TWEAK_MODE_COLORJITTER,
+    TWEAK_MODE_BLUR
+};
+
+class TweakTool : public ToolBase {
+public:
+    TweakTool(SPDesktop *desktop);
+    ~TweakTool() override;
+
+    /* extended input data */
+    gdouble pressure;
+
+    /* attributes */
+    bool dragging;           /* mouse state: mouse is dragging */
+    bool usepressure;
+    bool usetilt;
+
+    double width;
+    double force;
+    double fidelity;
+
+    gint mode;
+
+    bool is_drawing;
+
+    bool is_dilating;
+    bool has_dilated;
+    Geom::Point last_push;
+    Inkscape::CanvasItemBpath *dilate_area;
+
+    bool do_h;
+    bool do_s;
+    bool do_l;
+    bool do_o;
+
+    sigc::connection style_set_connection;
+
+    void set(const Inkscape::Preferences::Entry &val) override;
+    bool root_handler(GdkEvent *event) override;
+    void update_cursor(bool with_shift);
+
+private:
+    bool set_style(const SPCSSAttr *css);
+};
+
+}
+}
+}
+
+#endif
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
diff --git a/src/ui/tools/zoom-tool.cpp b/src/ui/tools/zoom-tool.cpp
new file mode 100644
index 0000000..dec3a52
--- /dev/null
+++ b/src/ui/tools/zoom-tool.cpp
@@ -0,0 +1,214 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Handy zooming tool
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Frank Felfe <innerspace@iname.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *
+ * Copyright (C) 1999-2002 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+
+#include <gdk/gdkkeysyms.h>
+
+#include "zoom-tool.h"
+
+#include "desktop.h"
+#include "rubberband.h"
+#include "selection-chemistry.h"
+
+#include "include/macros.h"
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+ZoomTool::ZoomTool(SPDesktop *desktop)
+    : ToolBase(desktop, "/tools/zoom", "zoom-in.svg")
+    , escaped(false)
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    if (prefs->getBool("/tools/zoom/selcue")) {
+        this->enableSelectionCue();
+    }
+
+    if (prefs->getBool("/tools/zoom/gradientdrag")) {
+        this->enableGrDrag();
+    }
+}
+
+ZoomTool::~ZoomTool()
+{
+    this->enableGrDrag(false);
+    ungrabCanvasEvents();
+}
+
+bool ZoomTool::root_handler(GdkEvent* event) {
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+	
+    tolerance = prefs->getIntLimited("/options/dragtolerance/value", 0, 0, 100);
+    double const zoom_inc = prefs->getDoubleLimited("/options/zoomincrement/value", M_SQRT2, 1.01, 10);
+
+    bool ret = false;
+
+    switch (event->type) {
+        case GDK_BUTTON_PRESS:
+        {
+            Geom::Point const button_w(event->button.x, event->button.y);
+            Geom::Point const button_dt(_desktop->w2d(button_w));
+
+            if (event->button.button == 1) {
+                // save drag origin
+                xp = (gint) event->button.x;
+                yp = (gint) event->button.y;
+                within_tolerance = true;
+
+                Inkscape::Rubberband::get(_desktop)->start(_desktop, button_dt);
+
+                escaped = false;
+
+                ret = true;
+            } else if (event->button.button == 3) {
+                double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)
+                                       ? zoom_inc
+                                       : 1 / zoom_inc );
+
+                _desktop->zoom_relative(button_dt, zoom_rel);
+                ret = true;
+            }
+
+            grabCanvasEvents(Gdk::KEY_PRESS_MASK      |
+                             Gdk::KEY_RELEASE_MASK    |
+                             Gdk::BUTTON_PRESS_MASK   |
+                             Gdk::BUTTON_RELEASE_MASK |
+                             Gdk::POINTER_MOTION_MASK );
+            break;
+        }
+
+	case GDK_MOTION_NOTIFY:
+            if ((event->motion.state & GDK_BUTTON1_MASK)) {
+                ret = true;
+
+                if ( within_tolerance
+                     && ( abs( (gint) event->motion.x - xp ) < tolerance )
+                     && ( abs( (gint) event->motion.y - yp ) < tolerance ) ) {
+                    break; // do not drag if we're within tolerance from origin
+                }
+                // Once the user has moved farther than tolerance from the original location
+                // (indicating they intend to move the object, not click), then always process the
+                // motion notify coordinates as given (no snapping back to origin)
+                within_tolerance = false;
+
+                Geom::Point const motion_w(event->motion.x, event->motion.y);
+                Geom::Point const motion_dt(_desktop->w2d(motion_w));
+                Inkscape::Rubberband::get(_desktop)->move(motion_dt);
+                gobble_motion_events(GDK_BUTTON1_MASK);
+            }
+            break;
+
+      	case GDK_BUTTON_RELEASE:
+        {
+            Geom::Point const button_w(event->button.x, event->button.y);
+            Geom::Point const button_dt(_desktop->w2d(button_w));
+
+            if ( event->button.button == 1) {
+                Geom::OptRect const b = Inkscape::Rubberband::get(_desktop)->getRectangle();
+
+                if (b && !within_tolerance && !(GDK_SHIFT_MASK & event->button.state) ) {
+                    _desktop->set_display_area(*b, 10);
+                } else if (!escaped) {
+                    double const zoom_rel( (event->button.state & GDK_SHIFT_MASK)
+                                           ? 1 / zoom_inc
+                                           : zoom_inc );
+
+                    _desktop->zoom_relative(button_dt, zoom_rel);
+                }
+
+                ret = true;
+            }
+
+            Inkscape::Rubberband::get(_desktop)->stop();
+
+            ungrabCanvasEvents();
+			
+            xp = yp = 0;
+            escaped = false;
+            break;
+        }
+        case GDK_KEY_PRESS:
+            switch (get_latin_keyval (&event->key)) {
+                case GDK_KEY_Escape:
+                    if (!Inkscape::Rubberband::get(_desktop)->is_started()) {
+                        Inkscape::SelectionHelper::selectNone(_desktop);
+                    }
+
+                    Inkscape::Rubberband::get(_desktop)->stop();
+                    xp = yp = 0;
+                    escaped = true;
+                    ret = true;
+                    break;
+
+                case GDK_KEY_Up:
+                case GDK_KEY_Down:
+                case GDK_KEY_KP_Up:
+                case GDK_KEY_KP_Down:
+                    // prevent the zoom field from activation
+                    if (!MOD__CTRL_ONLY(event))
+                        ret = true;
+                    break;
+
+                case GDK_KEY_Shift_L:
+                case GDK_KEY_Shift_R:
+                    this->set_cursor("zoom-out.svg");
+                    break;
+
+                case GDK_KEY_Delete:
+                case GDK_KEY_KP_Delete:
+                case GDK_KEY_BackSpace:
+                    ret = this->deleteSelectedDrag(MOD__CTRL_ONLY(event));
+                    break;
+
+                default:
+			break;
+		}
+		break;
+	case GDK_KEY_RELEASE:
+            switch (get_latin_keyval (&event->key)) {
+            	case GDK_KEY_Shift_L:
+            	case GDK_KEY_Shift_R:
+                    this->set_cursor("zoom-in.svg");
+                    break;
+            	default:
+                    break;
+            }
+            break;
+	default:
+            break;
+    }
+
+    if (!ret) {
+    	ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+}
+}
+}
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
diff --git a/src/ui/tools/zoom-tool.h b/src/ui/tools/zoom-tool.h
new file mode 100644
index 0000000..d7b97ad
--- /dev/null
+++ b/src/ui/tools/zoom-tool.h
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#ifndef __SP_ZOOM_CONTEXT_H__
+#define __SP_ZOOM_CONTEXT_H__
+
+/*
+ * Handy zooming tool
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   Frank Felfe <innerspace@iname.com>
+ *
+ * Copyright (C) 1999-2002 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "ui/tools/tool-base.h"
+
+#define SP_ZOOM_CONTEXT(obj) (dynamic_cast<Inkscape::UI::Tools::ZoomTool*>((Inkscape::UI::Tools::ToolBase*)obj))
+#define SP_IS_ZOOM_CONTEXT(obj) (dynamic_cast<const Inkscape::UI::Tools::ZoomTool*>((const Inkscape::UI::Tools::ToolBase*)obj) != NULL)
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+class ZoomTool : public ToolBase {
+public:
+    ZoomTool(SPDesktop *desktop);
+    ~ZoomTool() override;
+
+    bool root_handler(GdkEvent *event) override;
+
+private:
+    bool escaped;
+};
+
+}
+}
+}
+
+#endif