Adding upstream version 1.0.2.upstream/1.0.2upstream

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

1 files changed, 1466 insertions, 0 deletions

diff --git a/src/ui/tools/measure-tool.cpp b/src/ui/tools/measure-tool.cpp
new file mode 100644
index 0000000..caf9e3c
--- /dev/null
+++ b/src/ui/tools/measure-tool.cpp
@@ -0,0 +1,1466 @@
+// 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 <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 "path-chemistry.h"
+#include "rubberband.h"
+#include "text-editing.h"
+#include "verbs.h"
+
+#include "display/curve.h"
+#include "display/sodipodi-ctrl.h"
+#include "display/sp-canvas-util.h"
+#include "display/sp-canvas.h"
+#include "display/sp-ctrlcurve.h"
+#include "display/sp-ctrlline.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 "ui/pixmaps/cursor-measure.xpm"
+
+#include "svg/stringstream.h"
+#include "svg/svg-color.h"
+#include "svg/svg.h"
+
+#include "ui/dialog/knot-properties.h"
+#include "ui/tools/freehand-base.h"
+#include "ui/tools/measure-tool.h"
+
+#include "util/units.h"
+
+using Inkscape::ControlManager;
+using Inkscape::CTLINE_SECONDARY;
+using Inkscape::Util::unit_table;
+using Inkscape::DocumentUndo;
+
+#define MT_KNOT_COLOR_NORMAL 0xffffff00
+#define MT_KNOT_COLOR_MOUSEOVER 0xff000000
+
+
+namespace Inkscape {
+namespace UI {
+namespace Tools {
+
+const std::string& MeasureTool::getPrefsPath()
+{
+    return MeasureTool::prefsPath;
+}
+
+const std::string MeasureTool::prefsPath = "/tools/measure";
+
+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 visibleArea = desktop->get_display_area();
+    // Bring it in to "title safe" for the anchor point
+    Geom::Point textBox = desktop->w2d(Geom::Point(fontsize * 3, fontsize / 2));
+    textBox[Geom::Y] = std::abs(textBox[Geom::Y]);
+
+    visibleArea = Geom::Rect(visibleArea.min()[Geom::X] + textBox[Geom::X],
+                             visibleArea.min()[Geom::Y] + textBox[Geom::Y],
+                             visibleArea.max()[Geom::X] - textBox[Geom::X],
+                             visibleArea.max()[Geom::Y] - textBox[Geom::Y]);
+
+    where[Geom::X] = std::min(where[Geom::X], visibleArea.max()[Geom::X]);
+    where[Geom::X] = std::max(where[Geom::X], visibleArea.min()[Geom::X]);
+    where[Geom::Y] = std::min(where[Geom::Y], visibleArea.max()[Geom::Y]);
+    where[Geom::Y] = std::max(where[Geom::Y], visibleArea.min()[Geom::Y]);
+
+    return where;
+}
+
+/**
+ * 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 setMeasureItem(Geom::PathVector pathv, bool is_curve, bool markers, guint32 color, Inkscape::XML::Node *measure_repr)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    if(!desktop) {
+        return;
+    }
+    SPDocument *doc = desktop->getDocument();
+    Inkscape::XML::Document *xml_doc = doc->getReprDoc();
+    Inkscape::XML::Node *repr;
+    repr = xml_doc->createElement("svg:path");
+    gchar *str = sp_svg_write_path(pathv);
+    SPCSSAttr *css = sp_repr_css_attr_new();
+    Geom::Coord strokewidth = SP_ITEM(desktop->currentLayer())->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);
+    g_assert( str != nullptr );
+    repr->setAttribute("d", str);
+    g_free(str);
+    if(measure_repr) {
+        measure_repr->addChild(repr, nullptr);
+        Inkscape::GC::release(repr);
+    } else {
+        SPItem *item = SP_ITEM(desktop->currentLayer()->appendChildRepr(repr));
+        Inkscape::GC::release(repr);
+        item->updateRepr();
+        desktop->getSelection()->clear();
+        desktop->getSelection()->add(item);
+    }
+}
+
+/**
+ * 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 createAngleDisplayCurve(SPDesktop *desktop, Geom::Point const &center, Geom::Point const &end, Geom::Point const &anchor, double angle, bool to_phantom, std::vector<SPCanvasItem *> &measure_phantom_items , std::vector<SPCanvasItem *> &measure_tmp_items , Inkscape::XML::Node *measure_repr = nullptr)
+{
+    // 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 = (4.0 / 3.0) * (std::sqrt(2 * q1 * q2) - q2) / ((ax * by) - (ay * bx));
+
+        Geom::Point p2(xc + ax - (k2 * ay),
+                       yc + ay  + (k2 * ax));
+        Geom::Point p3(xc + bx + (k2 * by),
+                       yc + by - (k2 * bx));
+        SPCtrlCurve *curve = ControlManager::getManager().createControlCurve(desktop->getTempGroup(), p1, p2, p3, p4, CTLINE_SECONDARY);
+        if(to_phantom){
+            curve->rgba = 0x8888887f;
+            measure_phantom_items.push_back(SP_CANVAS_ITEM(curve));
+        } else {
+            measure_tmp_items.push_back(SP_CANVAS_ITEM(curve));
+        }
+        sp_canvas_item_move_to_z(SP_CANVAS_ITEM(curve), 0);
+        sp_canvas_item_show(SP_CANVAS_ITEM(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);
+            pathv *= SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
+            if(!pathv.empty()) {
+                setMeasureItem(pathv, true, false, 0xff00007f, measure_repr);
+            }
+        }
+    }
+}
+
+}  // namespace
+
+boost::optional<Geom::Point> explicit_base_tmp = boost::none;
+
+MeasureTool::MeasureTool()
+    : ToolBase(cursor_measure_xpm)
+    , grabbed(nullptr)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    start_p = readMeasurePoint(true);
+    end_p = readMeasurePoint(false);
+    dimension_offset = 35;
+    last_pos = Geom::Point(0,0);
+    // create the knots
+    this->knot_start = new SPKnot(desktop, _("Measure start, <b>Shift+Click</b> for position dialog"));
+    this->knot_start->setMode(SP_KNOT_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(SP_KNOT_SHAPE_CIRCLE);
+    this->knot_start->updateCtrl();
+    this->knot_end = new SPKnot(desktop, _("Measure end, <b>Shift+Click</b> for position dialog"));
+    this->knot_end->setMode(SP_KNOT_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(SP_KNOT_SHAPE_CIRCLE);
+    this->knot_end->updateCtrl();
+    Geom::Rect display_area = desktop->get_display_area();
+    if(display_area.interiorContains(start_p) && display_area.interiorContains(end_p) && end_p != Geom::Point()) {
+        this->knot_start->moveto(start_p);
+        this->knot_start->show();
+        this->knot_end->moveto(end_p);
+        this->knot_end->show();
+        showCanvasItems();
+    } else {
+        start_p = Geom::Point(0,0);
+        end_p = Geom::Point(0,0);
+        writeMeasurePoint(start_p, true);
+        writeMeasurePoint(end_p, false);
+    }
+    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->_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) {
+        sp_canvas_item_destroy(measure_tmp_item);
+    }
+    measure_tmp_items.clear();
+    for (auto & idx : measure_item) {
+        sp_canvas_item_destroy(idx);
+    }
+    measure_item.clear();
+    for (auto & measure_phantom_item : measure_phantom_items) {
+        sp_canvas_item_destroy(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) {
+        SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        Glib::ustring const unit_name =  prefs->getString("/tools/measure/unit");
+        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();
+}
+
+
+//todo: we need this function?
+void MeasureTool::finish()
+{
+    this->enableGrDrag(false);
+
+    if (this->grabbed) {
+        sp_canvas_item_ungrab(this->grabbed);
+        this->grabbed = nullptr;
+    }
+
+    ToolBase::finish();
+}
+
+static void calculate_intersections(SPDesktop * /*desktop*/, SPItem* item, Geom::PathVector const &lineseg, 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);
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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: {
+        this->knot_start->hide();
+        this->knot_end->hide();
+        Geom::Point const button_w(event->button.x, event->button.y);
+        explicit_base = boost::none;
+        explicit_base_tmp = boost::none;
+        last_end = boost::none;
+
+        if (event->button.button == 1 && !this->space_panning) {
+            // save drag origin
+            start_p = desktop->w2d(Geom::Point(event->button.x, event->button.y));
+            within_tolerance = true;
+
+            ret = TRUE;
+        }
+
+        SnapManager &snap_manager = desktop->namedview->snap_manager;
+        snap_manager.setup(desktop);
+        snap_manager.freeSnapReturnByRef(start_p, Inkscape::SNAPSOURCE_OTHER_HANDLE);
+        snap_manager.unSetup();
+
+        sp_canvas_item_grab(SP_CANVAS_ITEM(desktop->acetate),
+                            GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK | GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK,
+                            nullptr, event->button.time);
+        this->grabbed = SP_CANVAS_ITEM(desktop->acetate);
+        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 {
+            SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+            //Inkscape::Util::Unit const * unit = desktop->getNamedView()->getDisplayUnit();
+            for (auto & idx : measure_item) {
+                sp_canvas_item_destroy(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: {
+        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();
+
+        if (this->grabbed) {
+            sp_canvas_item_ungrab(this->grabbed);
+            this->grabbed = nullptr;
+        }
+        break;
+    }
+    default:
+        break;
+    }
+    if (!ret) {
+        ret = ToolBase::root_handler(event);
+    }
+
+    return ret;
+}
+
+void MeasureTool::setMarkers()
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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()
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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) {
+        explicit_base = *explicit_base * SP_ITEM(desktop->currentLayer())->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(), SP_VERB_CONTEXT_MEASURE,_("Add guides from measure tool"));
+}
+
+void MeasureTool::toPhantom()
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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) {
+        sp_canvas_item_destroy(measure_phantom_item);
+    }
+    measure_phantom_items.clear();
+    for (auto & measure_tmp_item : measure_tmp_items) {
+        sp_canvas_item_destroy(measure_tmp_item);
+    }
+    measure_tmp_items.clear();
+    showCanvasItems(false, false, true);
+    doc->ensureUpToDate();
+    DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_MEASURE,_("Keep last measure on the canvas, for reference"));
+}
+
+void MeasureTool::toItem()
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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->currentLayer()->appendChildRepr(rgroup));
+    Inkscape::GC::release(rgroup);
+    measure_item->updateRepr();
+    doc->ensureUpToDate();
+    DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_MEASURE,_("Convert measure to items"));
+    reset();
+}
+
+void MeasureTool::toMarkDimension()
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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);
+    int precision = prefs->getInt("/tools/measure/precision", 2);
+    std::stringstream precision_str;
+    precision_str.imbue(std::locale::classic());
+    precision_str <<  "%." << precision << "f %s";
+    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;
+    gchar *totallength_str = g_strdup_printf(precision_str.str().c_str(), totallengthval * scale, unit_name.c_str());
+    double textangle = Geom::rad_from_deg(180) - ray.angle();
+    if (desktop->is_yaxisdown()) {
+        textangle = ray.angle() - Geom::rad_from_deg(180);
+    }
+    setLabelText(totallength_str, middle, fontsize, textangle, color);
+    g_free(totallength_str);
+    doc->ensureUpToDate();
+    DocumentUndo::done(desktop->getDocument(), SP_VERB_CONTEXT_MEASURE,_("Add global measure line"));
+}
+
+void MeasureTool::setGuide(Geom::Point origin, double angle, const char *label)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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 *= SP_ITEM(desktop->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)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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 *= SP_ITEM(desktop->currentLayer())->i2doc_affine().inverse();
+    if (!pathv.empty()) {
+        guint32 line_color_secondary = 0xff0000ff;
+        setMeasureItem(pathv, false, false, line_color_secondary, measure_repr);
+    }
+}
+
+void MeasureTool::setLabelText(const char *value, Geom::Point pos, double fontsize, Geom::Coord angle, guint32 background, Inkscape::XML::Node *measure_repr, CanvasTextAnchorPositionEnum text_anchor)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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) {
+        sp_repr_set_svg_double(rtext, "x", 2);
+        sp_repr_set_svg_double(rtext, "y", 2);
+    } else {
+        sp_repr_set_svg_double(rtext, "x", 0);
+        sp_repr_set_svg_double(rtext, "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);
+    rtspan->addChild(rstring, nullptr);
+    Inkscape::GC::release(rstring);
+    SPItem *text_item = SP_ITEM(desktop->currentLayer()->appendChildRepr(rtext));
+    Inkscape::GC::release(rtext);
+    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);
+        sp_repr_set_svg_double(rgroup, "x", 0);
+        sp_repr_set_svg_double(rgroup, "y", 0);
+        sp_repr_set_svg_double(rrect, "x", -bbox->width()/2.0);
+        sp_repr_set_svg_double(rrect, "y", -bbox->height());
+        sp_repr_set_svg_double(rrect, "width", bbox->width() + 6);
+        sp_repr_set_svg_double(rrect, "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(desktop->currentLayer()->appendChildRepr(rgroup));
+        Geom::Scale scale = Geom::Scale(desktop->current_zoom()).inverse();
+        if(bbox && text_anchor == TEXT_ANCHOR_CENTER) {
+            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 *= SP_ITEM(desktop->currentLayer())->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 *= SP_ITEM(desktop->currentLayer())->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) {
+        sp_canvas_item_destroy(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, CanvasTextAnchorPositionEnum text_anchor, bool to_item, bool to_phantom, Inkscape::XML::Node *measure_repr)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    std::stringstream precision_str;
+    precision_str.imbue(std::locale::classic());
+    if(is_angle){
+        precision_str << "%." << precision << "f °";
+    } else {
+        precision_str << "%." << precision << "f %s";
+    }
+    gchar *measure_str = g_strdup_printf(precision_str.str().c_str(), amount, unit_name.c_str());
+    SPCanvasText *canvas_tooltip = sp_canvastext_new(desktop->getTempGroup(),
+                                   desktop,
+                                   position,
+                                   measure_str);
+    sp_canvastext_set_fontsize(canvas_tooltip, fontsize);
+    canvas_tooltip->rgba = 0xffffffff;
+    canvas_tooltip->rgba_background = background;
+    canvas_tooltip->outline = false;
+    canvas_tooltip->background = true;
+    canvas_tooltip->anchor_position = text_anchor;
+    if(to_phantom){
+        canvas_tooltip->rgba_background = 0x4444447f;
+        measure_phantom_items.push_back(SP_CANVAS_ITEM(canvas_tooltip));
+        sp_canvas_item_show(SP_CANVAS_ITEM(canvas_tooltip));
+    } else {
+        measure_tmp_items.push_back(SP_CANVAS_ITEM(canvas_tooltip));
+        sp_canvas_item_show(SP_CANVAS_ITEM(canvas_tooltip));
+    }
+
+    if(to_item) {
+        setLabelText(measure_str, position, fontsize, 0, background, measure_repr);
+    }
+    g_free(measure_str);
+}
+
+void MeasureTool::setMeasureCanvasItem(Geom::Point position, bool to_item, bool to_phantom, Inkscape::XML::Node *measure_repr){
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    guint32 color = 0xff0000ff;
+    if(to_phantom){
+        color = 0x888888ff;
+    }
+    SPCanvasItem * canvasitem = sp_canvas_item_new(desktop->getTempGroup(),
+        SP_TYPE_CTRL,
+        "anchor", SP_ANCHOR_CENTER,
+        "size", 9,
+        "stroked", TRUE,
+        "stroke_color", color,
+        "mode", SP_KNOT_MODE_XOR,
+        "shape", SP_KNOT_SHAPE_CROSS,
+        NULL );
+
+    SP_CTRL(canvasitem)->moveto(position);
+    if(to_phantom){
+        measure_phantom_items.push_back(canvasitem);
+    } else {
+        measure_tmp_items.push_back(canvasitem);
+    }
+    sp_canvas_item_show(canvasitem);
+    sp_canvas_item_move_to_z(canvasitem, 0);
+
+    if(to_item) {
+        setPoint(position, measure_repr);
+    }
+}
+
+void MeasureTool::setMeasureCanvasControlLine(Geom::Point start, Geom::Point end, bool to_item, bool to_phantom, Inkscape::CtrlLineType ctrl_line_type, Inkscape::XML::Node *measure_repr){
+        SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+        gint32 color = ctrl_line_type == CTLINE_PRIMARY ? 0x0000ff7f : 0xff00007f;
+        if(to_phantom){
+            color  = ctrl_line_type == CTLINE_PRIMARY ? 0x4444447f : 0x8888887f;
+        }
+        SPCtrlLine *control_line = ControlManager::getManager().createControlLine(desktop->getTempGroup(),
+                                   start,
+                                   end,
+                                   ctrl_line_type);
+        control_line->rgba = color;
+        if(to_phantom){
+            measure_phantom_items.push_back(SP_CANVAS_ITEM(control_line));
+        } else {
+            measure_tmp_items.push_back(SP_CANVAS_ITEM(control_line));
+        }
+        sp_canvas_item_move_to_z(SP_CANVAS_ITEM(control_line), 0);
+        sp_canvas_item_show(SP_CANVAS_ITEM(control_line));
+        if(to_item) {
+            setLine(start,
+                    end,
+                    false,
+                    color,
+                    measure_repr);
+        }
+}
+
+void MeasureTool::showItemInfoText(Geom::Point pos, gchar *measure_str, double fontsize)
+{
+    SPCanvasText *canvas_tooltip = sp_canvastext_new(desktop->getTempGroup(),
+                                                     desktop,
+                                                     pos,
+                                                     measure_str);
+    sp_canvastext_set_fontsize(canvas_tooltip, fontsize);
+    canvas_tooltip->rgba = 0xffffffff;
+    canvas_tooltip->outline = false;
+    canvas_tooltip->background = true;
+    canvas_tooltip->anchor_position = TEXT_ANCHOR_LEFT;
+    canvas_tooltip->rgba_background = 0x00000099;
+    measure_item.push_back(SP_CANVAS_ITEM(canvas_tooltip));
+    sp_canvas_item_show(SP_CANVAS_ITEM(canvas_tooltip));
+}
+
+void MeasureTool::showInfoBox(Geom::Point cursor, bool into_groups)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    Inkscape::Util::Unit const * unit = desktop->getNamedView()->getDisplayUnit();
+    for (auto & idx : measure_item) {
+        sp_canvas_item_destroy(idx);
+    }
+    measure_item.clear();
+
+    SPItem *newover = desktop->getItemAtPoint(cursor, into_groups);
+    if (newover) {
+        Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+        double fontsize = prefs->getDouble("/tools/measure/fontsize", 10.0);
+        double scale = prefs->getDouble("/tools/measure/scale", 100.0) / 100.0;
+        int precision = prefs->getInt("/tools/measure/precision", 2);
+        Glib::ustring unit_name = prefs->getString("/tools/measure/unit");
+        bool only_selected = prefs->getBool("/tools/measure/only_selected", false);
+        if (!unit_name.compare("")) {
+            unit_name = DEFAULT_UNIT_NAME;
+        }
+        Geom::Scale zoom = Geom::Scale(Inkscape::Util::Quantity::convert(desktop->current_zoom(), "px", unit->abbr)).inverse();
+        if(newover != over){
+            over = newover;
+            Preferences *prefs = Preferences::get();
+            int prefs_bbox = prefs->getBool("/tools/bounding_box", false);
+            SPItem::BBoxType bbox_type = !prefs_bbox ? SPItem::VISUAL_BBOX : SPItem::GEOMETRIC_BBOX;
+            Geom::OptRect bbox = over->bounds(bbox_type);
+            if (bbox) {
+
+                item_width = Inkscape::Util::Quantity::convert((*bbox).width() * scale, unit->abbr, unit_name);
+                item_height = Inkscape::Util::Quantity::convert((*bbox).height() * scale, unit->abbr, unit_name);
+                item_x = Inkscape::Util::Quantity::convert((*bbox).left(), unit->abbr, unit_name);
+                Geom::Point y_point(0,Inkscape::Util::Quantity::convert((*bbox).bottom() * scale, unit->abbr, "px"));
+                y_point *= desktop->doc2dt();
+                item_y = Inkscape::Util::Quantity::convert(y_point[Geom::Y] * scale, "px", unit_name);
+                if (SP_IS_SHAPE(over)) {
+                    Geom::PathVector shape = SP_SHAPE(over)->getCurve(true)->get_pathvector();
+                    item_length = Geom::length(paths_to_pw(shape));
+                    item_length = Inkscape::Util::Quantity::convert(item_length * scale, unit->abbr, unit_name);
+                }
+            }
+        }
+        gchar *measure_str = nullptr;
+        std::stringstream precision_str;
+        precision_str.imbue(std::locale::classic());
+        double origin = Inkscape::Util::Quantity::convert(14, "px", unit->abbr);
+        Geom::Point rel_position = Geom::Point(origin, origin);
+        Geom::Point pos = desktop->w2d(cursor);
+        double gap = Inkscape::Util::Quantity::convert(7 + fontsize, "px", unit->abbr);
+        if (only_selected) {
+            if (desktop->getSelection()->includes(over)) {
+                showItemInfoText(pos + (rel_position * zoom),_("Selected"),fontsize);
+            } else {
+                showItemInfoText(pos + (rel_position * zoom),_("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 + (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 + (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 + (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 + (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 + (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 + (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)
+{
+    SPDesktop *desktop = SP_ACTIVE_DESKTOP;
+    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) {
+        sp_canvas_item_destroy(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.get() - start_p);
+        angle -= baseAngle;
+    }
+
+    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);
+    Inkscape::LayerModel *layer_model = nullptr;
+    SPObject *current_layer = nullptr;
+    if(desktop){
+        layer_model = desktop->layers;
+        current_layer = desktop->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 || (layer_model && layer_model->layerForObject(item) == current_layer)){
+            if (SP_IS_SHAPE(item)) {
+                calculate_intersections(desktop, item, lineseg, SP_SHAPE(item)->getCurve(), 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:
+                        SPCurve *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?
+                            curve->unref();
+                            continue;
+                        }
+
+                        calculate_intersections(desktop, item, lineseg, 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, TEXT_ANCHOR_CENTER, 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, TEXT_ANCHOR_CENTER, 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, TEXT_ANCHOR_LEFT, 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, TEXT_ANCHOR_CENTER, 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, CTLINE_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, CTLINE_SECONDARY, measure_repr);
+        createAngleDisplayCurve(desktop, 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, CTLINE_PRIMARY , measure_repr);
+
+        setMeasureCanvasControlLine(desktop->doc2dt(intersections[0]), desktop->doc2dt(intersections[0]) + normal * dimension_offset, to_item, to_phantom, CTLINE_PRIMARY , measure_repr);
+
+        setMeasureCanvasControlLine(desktop->doc2dt(intersections[intersections.size() - 1]), desktop->doc2dt(intersections[intersections.size() - 1]) + normal * dimension_offset, to_item, to_phantom, CTLINE_PRIMARY , measure_repr);
+    }
+
+    // call-out lines
+    for (auto & place : placements) {
+        setMeasureCanvasControlLine(place.start, place.end, to_item, to_phantom, CTLINE_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, CTLINE_SECONDARY, measure_repr);
+        }
+    }
+}
+
+}
+}
+}
+
+/*
+  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 :