Adding upstream version 1.3+ds.upstream/1.3+dsupstream

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

1 files changed, 654 insertions, 0 deletions

diff --git a/src/ui/toolbar/select-toolbar.cpp b/src/ui/toolbar/select-toolbar.cpp
new file mode 100644
index 0000000..82a421c
--- /dev/null
+++ b/src/ui/toolbar/select-toolbar.cpp
@@ -0,0 +1,654 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Selector aux toolbar
+ *
+ * Authors:
+ *   Lauris Kaplinski <lauris@kaplinski.com>
+ *   bulia byak <buliabyak@users.sf.net>
+ *   Jon A. Cruz <jon@joncruz.org>
+ *   Abhishek Sharma
+ *
+ * Copyright (C) 2003-2005 authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#include "select-toolbar.h"
+
+#include <glibmm/i18n.h>
+
+#include <gtkmm/adjustment.h>
+#include <gtkmm/separatortoolitem.h>
+
+#include <2geom/rect.h>
+
+#include "desktop.h"
+#include "document-undo.h"
+#include "document.h"
+#include "selection.h"
+#include "message-stack.h"
+#include "selection-chemistry.h"
+
+#include "object/sp-item-transform.h"
+#include "object/sp-namedview.h"
+
+#include "page-manager.h"
+
+#include "ui/icon-names.h"
+#include "ui/widget/canvas.h" // Focus widget
+#include "ui/widget/combo-tool-item.h"
+#include "ui/widget/spin-button-tool-item.h"
+#include "ui/widget/spinbutton.h"
+#include "ui/widget/unit-tracker.h"
+
+#include "widgets/widget-sizes.h"
+
+using Inkscape::UI::Widget::UnitTracker;
+using Inkscape::Util::Unit;
+using Inkscape::Util::Quantity;
+using Inkscape::DocumentUndo;
+using Inkscape::Util::unit_table;
+
+namespace Inkscape {
+namespace UI {
+namespace Toolbar {
+
+SelectToolbar::SelectToolbar(SPDesktop *desktop) :
+    Toolbar(desktop),
+    _tracker(new UnitTracker(Inkscape::Util::UNIT_TYPE_LINEAR)),
+    _lock_btn(Gtk::manage(new Gtk::ToggleToolButton())),
+    _select_touch_btn(Gtk::manage(new Gtk::ToggleToolButton())),
+    _transform_stroke_btn(Gtk::manage(new Gtk::ToggleToolButton())),
+    _transform_corners_btn(Gtk::manage(new Gtk::ToggleToolButton())),
+    _transform_gradient_btn(Gtk::manage(new Gtk::ToggleToolButton())),
+    _transform_pattern_btn(Gtk::manage(new Gtk::ToggleToolButton())),
+    _update(false),
+    _action_prefix("selector:toolbar:")
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Select Al_l")));
+        button->set_tooltip_text(N_("Select all objects"));
+        button->set_icon_name(INKSCAPE_ICON("edit-select-all"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "win.select-all");
+        add(*button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Select All in All La_yers")));
+        button->set_tooltip_text(N_("Select all objects in all visible and unlocked layers"));
+        button->set_icon_name(INKSCAPE_ICON("edit-select-all-layers"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "win.select-all-layers");
+        add(*button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("D_eselect")));
+        button->set_tooltip_text(N_("Deselect any selected objects"));
+        button->set_icon_name(INKSCAPE_ICON("edit-select-none"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "win.select-none");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    _select_touch_btn->set_label(_("Select by touch"));
+    _select_touch_btn->set_tooltip_text(_("Toggle selection box to select all touched objects."));
+    _select_touch_btn->set_icon_name(INKSCAPE_ICON("selection-touch"));
+    _select_touch_btn->set_active(prefs->getBool("/tools/select/touch_box", false));
+    _select_touch_btn->signal_toggled().connect(sigc::mem_fun(*this, &SelectToolbar::toggle_touch));
+
+    add(*_select_touch_btn);
+
+    add(* Gtk::manage(new Gtk::SeparatorToolItem()));
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Rotate _90\xc2\xb0 CCW")));
+        button->set_tooltip_text(N_("Rotate selection 90\xc2\xb0 counter-clockwise"));
+        button->set_icon_name(INKSCAPE_ICON("object-rotate-left"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.object-rotate-90-ccw");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Rotate _90\xc2\xb0 CW")));
+        button->set_tooltip_text(N_("Rotate selection 90\xc2\xb0 clockwise"));
+        button->set_icon_name(INKSCAPE_ICON("object-rotate-right"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.object-rotate-90-cw");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Flip _Horizontal")));
+        button->set_tooltip_text(N_("Flip selected objects horizontally"));
+        button->set_icon_name(INKSCAPE_ICON("object-flip-horizontal"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.object-flip-horizontal");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Flip _Vertical")));
+        button->set_tooltip_text(N_("Flip selected objects vertically"));
+        button->set_icon_name(INKSCAPE_ICON("object-flip-vertical"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.object-flip-vertical");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    add(* Gtk::manage(new Gtk::SeparatorToolItem()));
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Raise to _Top")));
+        button->set_tooltip_text(N_("Raise selection to top"));
+        button->set_icon_name(INKSCAPE_ICON("selection-top"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.selection-top");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("_Raise")));
+        button->set_tooltip_text(N_("Raise selection one step"));
+        button->set_icon_name(INKSCAPE_ICON("selection-raise"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.selection-raise");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("_Lower")));
+        button->set_tooltip_text(N_("Lower selection one step"));
+        button->set_icon_name(INKSCAPE_ICON("selection-lower"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.selection-lower");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    {
+        auto button = Gtk::manage(new Gtk::ToolButton(N_("Lower to _Bottom")));
+        button->set_tooltip_text(N_("Lower selection to bottom"));
+        button->set_icon_name(INKSCAPE_ICON("selection-bottom"));
+        // Must use C API until GTK4
+        gtk_actionable_set_action_name(GTK_ACTIONABLE(button->gobj()), "app.selection-bottom");
+        add(*button);
+        _context_items.push_back(button);
+    }
+
+    add(* Gtk::manage(new Gtk::SeparatorToolItem()));
+
+    _tracker->addUnit(unit_table.getUnit("%"));
+    _tracker->setActiveUnit( desktop->getNamedView()->display_units );
+
+    // x-value control
+    auto x_val = prefs->getDouble("/tools/select/X", 0.0);
+    _adj_x = Gtk::Adjustment::create(x_val, -1e6, 1e6, SPIN_STEP, SPIN_PAGE_STEP);
+    _adj_x->signal_value_changed().connect(sigc::bind(sigc::mem_fun(*this, &SelectToolbar::any_value_changed), _adj_x));
+    _tracker->addAdjustment(_adj_x->gobj());
+
+    auto x_btn = Gtk::manage(new UI::Widget::SpinButtonToolItem("select-x",
+                                                                C_("Select toolbar", "X:"),
+                                                                _adj_x,
+                                                                SPIN_STEP, 3));
+    x_btn->get_spin_button()->addUnitTracker(_tracker.get());
+    x_btn->set_focus_widget(_desktop->getCanvas());
+    x_btn->set_all_tooltip_text(C_("Select toolbar", "Horizontal coordinate of selection"));
+    _context_items.push_back(x_btn);
+    add(*x_btn);
+
+    // y-value control
+    auto y_val = prefs->getDouble("/tools/select/Y", 0.0);
+    _adj_y = Gtk::Adjustment::create(y_val, -1e6, 1e6, SPIN_STEP, SPIN_PAGE_STEP);
+    _adj_y->signal_value_changed().connect(sigc::bind(sigc::mem_fun(*this, &SelectToolbar::any_value_changed), _adj_y));
+    _tracker->addAdjustment(_adj_y->gobj());
+
+    auto y_btn = Gtk::manage(new UI::Widget::SpinButtonToolItem("select-y",
+                                                                C_("Select toolbar", "Y:"),
+                                                                _adj_y,
+                                                                SPIN_STEP, 3));
+    y_btn->get_spin_button()->addUnitTracker(_tracker.get());
+    y_btn->set_focus_widget(_desktop->getCanvas());
+    y_btn->set_all_tooltip_text(C_("Select toolbar", "Vertical coordinate of selection"));
+    _context_items.push_back(y_btn);
+    add(*y_btn);
+
+    // width-value control
+    auto w_val = prefs->getDouble("/tools/select/width", 0.0);
+    _adj_w = Gtk::Adjustment::create(w_val, 0.0, 1e6, SPIN_STEP, SPIN_PAGE_STEP);
+    _adj_w->signal_value_changed().connect(sigc::bind(sigc::mem_fun(*this, &SelectToolbar::any_value_changed), _adj_w));
+    _tracker->addAdjustment(_adj_w->gobj());
+
+    auto w_btn = Gtk::manage(new UI::Widget::SpinButtonToolItem("select-width",
+                                                                C_("Select toolbar", "W:"),
+                                                                _adj_w,
+                                                                SPIN_STEP, 3));
+    w_btn->get_spin_button()->addUnitTracker(_tracker.get());
+    w_btn->set_focus_widget(_desktop->getCanvas());
+    w_btn->set_all_tooltip_text(C_("Select toolbar", "Width of selection"));
+    _context_items.push_back(w_btn);
+    add(*w_btn);
+
+    // lock toggle
+    _lock_btn->set_label(_("Lock width and height"));
+    _lock_btn->set_tooltip_text(_("When locked, change both width and height by the same proportion"));
+    _lock_btn->set_icon_name(INKSCAPE_ICON("object-unlocked"));
+    _lock_btn->signal_toggled().connect(sigc::mem_fun(*this, &SelectToolbar::toggle_lock));
+    _lock_btn->set_name("lock");
+    add(*_lock_btn);
+
+    // height-value control
+    auto h_val = prefs->getDouble("/tools/select/height", 0.0);
+    _adj_h = Gtk::Adjustment::create(h_val, 0.0, 1e6, SPIN_STEP, SPIN_PAGE_STEP);
+    _adj_h->signal_value_changed().connect(sigc::bind(sigc::mem_fun(*this, &SelectToolbar::any_value_changed), _adj_h));
+    _tracker->addAdjustment(_adj_h->gobj());
+
+    auto h_btn = Gtk::manage(new UI::Widget::SpinButtonToolItem("select-height",
+                                                                C_("Select toolbar", "H:"),
+                                                                _adj_h,
+                                                                SPIN_STEP, 3));
+    h_btn->get_spin_button()->addUnitTracker(_tracker.get());
+    h_btn->set_focus_widget(_desktop->getCanvas());
+    h_btn->set_all_tooltip_text(C_("Select toolbar", "Height of selection"));
+    _context_items.push_back(h_btn);
+    add(*h_btn);
+
+    // units menu
+    auto unit_menu = _tracker->create_tool_item(_("Units"), ("") );
+    add(*unit_menu);
+
+    add(* Gtk::manage(new Gtk::SeparatorToolItem()));
+
+    _transform_stroke_btn->set_label(_("Scale stroke width"));
+    _transform_stroke_btn->set_tooltip_text(_("When scaling objects, scale the stroke width by the same proportion"));
+    _transform_stroke_btn->set_icon_name(INKSCAPE_ICON("transform-affect-stroke"));
+    _transform_stroke_btn->set_active(prefs->getBool("/options/transform/stroke", true));
+    _transform_stroke_btn->signal_toggled().connect(sigc::mem_fun(*this, &SelectToolbar::toggle_stroke));
+    add(*_transform_stroke_btn);
+
+    _transform_corners_btn->set_label(_("Scale rounded corners"));
+    _transform_corners_btn->set_tooltip_text(_("When scaling rectangles, scale the radii of rounded corners"));
+    _transform_corners_btn->set_icon_name(INKSCAPE_ICON("transform-affect-rounded-corners"));
+    _transform_corners_btn->set_active(prefs->getBool("/options/transform/rectcorners", true));
+    _transform_corners_btn->signal_toggled().connect(sigc::mem_fun(*this, &SelectToolbar::toggle_corners));
+    add(*_transform_corners_btn);
+
+    _transform_gradient_btn->set_label(_("Move gradients"));
+    _transform_gradient_btn->set_tooltip_text(_("Move gradients (in fill or stroke) along with the objects"));
+    _transform_gradient_btn->set_icon_name(INKSCAPE_ICON("transform-affect-gradient"));
+    _transform_gradient_btn->set_active(prefs->getBool("/options/transform/gradient", true));
+    _transform_gradient_btn->signal_toggled().connect(sigc::mem_fun(*this, &SelectToolbar::toggle_gradient));
+    add(*_transform_gradient_btn);
+
+    _transform_pattern_btn->set_label(_("Move patterns"));
+    _transform_pattern_btn->set_tooltip_text(_("Move patterns (in fill or stroke) along with the objects"));
+    _transform_pattern_btn->set_icon_name(INKSCAPE_ICON("transform-affect-pattern"));
+    _transform_pattern_btn->set_active(prefs->getBool("/options/transform/pattern", true));
+    _transform_pattern_btn->signal_toggled().connect(sigc::mem_fun(*this, &SelectToolbar::toggle_pattern));
+    add(*_transform_pattern_btn);
+
+    assert(desktop);
+    auto *selection = desktop->getSelection();
+
+    // Force update when selection changes.
+    _connections.emplace_back( //
+        selection->connectModified(sigc::mem_fun(*this, &SelectToolbar::on_inkscape_selection_modified)));
+    _connections.emplace_back(
+        selection->connectChanged(sigc::mem_fun(*this, &SelectToolbar::on_inkscape_selection_changed)));
+
+    // Update now.
+    layout_widget_update(selection);
+
+    for (auto item : _context_items) {
+        if ( item->is_sensitive() ) {
+            item->set_sensitive(false);
+        }
+    }
+
+    show_all();
+}
+
+void SelectToolbar::on_unrealize()
+{
+    for (auto &conn : _connections) {
+        conn.disconnect();
+    }
+
+    parent_type::on_unrealize();
+}
+
+GtkWidget *
+SelectToolbar::create(SPDesktop *desktop)
+{
+    auto toolbar = new SelectToolbar(desktop);
+    return GTK_WIDGET(toolbar->gobj());
+}
+
+void
+SelectToolbar::any_value_changed(Glib::RefPtr<Gtk::Adjustment>& adj)
+{
+    if (_update) {
+        return;
+    }
+
+    if ( !_tracker || _tracker->isUpdating() ) {
+        /*
+         * When only units are being changed, don't treat changes
+         * to adjuster values as object changes.
+         */
+        return;
+    }
+    _update = true;
+
+    auto prefs = Inkscape::Preferences::get();
+    auto selection = _desktop->getSelection();
+    auto document = _desktop->getDocument();
+    auto &pm = document->getPageManager();
+    auto page = pm.getSelectedPageRect();
+    auto page_correction = prefs->getBool("/options/origincorrection/page", true);
+
+    document->ensureUpToDate();
+
+    Geom::OptRect bbox_vis = selection->visualBounds();
+    Geom::OptRect bbox_geom = selection->geometricBounds();
+    Geom::OptRect bbox_user = selection->preferredBounds();
+
+    if ( !bbox_user ) {
+        _update = false;
+        return;
+    }
+
+    Unit const *unit = _tracker->getActiveUnit();
+    g_return_if_fail(unit != nullptr);
+
+    gdouble old_w = bbox_user->dimensions()[Geom::X];
+    gdouble old_h = bbox_user->dimensions()[Geom::Y];
+    gdouble new_w, new_h, new_x, new_y = 0;
+
+    if (unit->type == Inkscape::Util::UNIT_TYPE_LINEAR) {
+        new_w = Quantity::convert(_adj_w->get_value(), unit, "px");
+        new_h = Quantity::convert(_adj_h->get_value(), unit, "px");
+        new_x = Quantity::convert(_adj_x->get_value(), unit, "px");
+        new_y = Quantity::convert(_adj_y->get_value(), unit, "px");
+
+    } else {
+        gdouble old_x = bbox_user->min()[Geom::X] + (old_w * selection->anchor_x);
+        gdouble old_y = bbox_user->min()[Geom::Y] + (old_h * selection->anchor_y);
+
+        // Adjust against selected page, so later correction isn't broken.
+        if (page_correction) {
+            old_x -= page.left();
+            old_y -= page.top();
+        }
+
+        new_x = old_x * (_adj_x->get_value() / 100 / unit->factor);
+        new_y = old_y * (_adj_y->get_value() / 100 / unit->factor);
+        new_w = old_w * (_adj_w->get_value() / 100 / unit->factor);
+        new_h = old_h * (_adj_h->get_value() / 100 / unit->factor);
+    }
+
+    // Adjust depending on the selected anchor.
+    gdouble x0 = (new_x - (old_w * selection->anchor_x)) - ((new_w - old_w) * selection->anchor_x);
+    gdouble y0 = (new_y - (old_h * selection->anchor_y)) - ((new_h - old_h) * selection->anchor_y);
+
+    // Adjust according to the selected page, if needed
+    if (page_correction) {
+        x0 += page.left();
+        y0 += page.top();
+    }
+
+    gdouble x1 = x0 + new_w;
+    gdouble xrel = new_w / old_w;
+    gdouble y1 = y0 + new_h;
+    gdouble yrel = new_h / old_h;
+
+    // Keep proportions if lock is on
+    if ( _lock_btn->get_active() ) {
+        if (adj == _adj_h) {
+            x1 = x0 + yrel * bbox_user->dimensions()[Geom::X];
+        } else if (adj == _adj_w) {
+            y1 = y0 + xrel * bbox_user->dimensions()[Geom::Y];
+        }
+    }
+
+    // scales and moves, in px
+    double mh = fabs(x0 - bbox_user->min()[Geom::X]);
+    double sh = fabs(x1 - bbox_user->max()[Geom::X]);
+    double mv = fabs(y0 - bbox_user->min()[Geom::Y]);
+    double sv = fabs(y1 - bbox_user->max()[Geom::Y]);
+
+    // unless the unit is %, convert the scales and moves to the unit
+    if (unit->type == Inkscape::Util::UNIT_TYPE_LINEAR) {
+        mh = Quantity::convert(mh, "px", unit);
+        sh = Quantity::convert(sh, "px", unit);
+        mv = Quantity::convert(mv, "px", unit);
+        sv = Quantity::convert(sv, "px", unit);
+    }
+
+    char const *const actionkey = get_action_key(mh, sh, mv, sv);
+
+    if (actionkey != nullptr) {
+
+        bool transform_stroke = prefs->getBool("/options/transform/stroke", true);
+        bool preserve = prefs->getBool("/options/preservetransform/value", false);
+
+        Geom::Affine scaler;
+        if (prefs->getInt("/tools/bounding_box") == 0) { // SPItem::VISUAL_BBOX
+            scaler = get_scale_transform_for_variable_stroke (*bbox_vis, *bbox_geom, transform_stroke, preserve, x0, y0, x1, y1);
+        } else {
+            // 1) We could have use the newer get_scale_transform_for_variable_stroke() here, but to avoid regressions
+            // we'll just use the old get_scale_transform_for_uniform_stroke() for now.
+            // 2) get_scale_transform_for_uniform_stroke() is intended for visual bounding boxes, not geometrical ones!
+            // we'll trick it into using a geometric bounding box though, by setting the stroke width to zero
+            scaler = get_scale_transform_for_uniform_stroke (*bbox_geom, 0, 0, false, false, x0, y0, x1, y1);
+        }
+
+        selection->applyAffine(scaler);
+        DocumentUndo::maybeDone(document, actionkey, _("Transform by toolbar"), INKSCAPE_ICON("tool-pointer"));
+    }
+
+    _update = false;
+}
+
+void
+SelectToolbar::layout_widget_update(Inkscape::Selection *sel)
+{
+    if (_update) {
+        return;
+    }
+
+    _update = true;
+    using Geom::X;
+    using Geom::Y;
+    if ( sel && !sel->isEmpty() ) {
+        Geom::OptRect const bbox(sel->preferredBounds());
+        if ( bbox ) {
+            Unit const *unit = _tracker->getActiveUnit();
+            g_return_if_fail(unit != nullptr);
+
+            auto width = bbox->dimensions()[X];
+            auto height = bbox->dimensions()[Y];
+            auto x = bbox->min()[X] + (width * sel->anchor_x);
+            auto y = bbox->min()[Y] + (height * sel->anchor_y);
+
+            auto prefs = Inkscape::Preferences::get();
+            if (prefs->getBool("/options/origincorrection/page", true)) {
+                auto &pm = _desktop->getDocument()->getPageManager();
+                auto page = pm.getSelectedPageRect();
+                x -= page.left();
+                y -= page.top();
+            }
+
+            if (unit->type == Inkscape::Util::UNIT_TYPE_DIMENSIONLESS) {
+                double const val = unit->factor * 100;
+                _adj_x->set_value(val);
+                _adj_y->set_value(val);
+                _adj_w->set_value(val);
+                _adj_h->set_value(val);
+                _tracker->setFullVal( _adj_x->gobj(), x );
+                _tracker->setFullVal( _adj_y->gobj(), y );
+                _tracker->setFullVal( _adj_w->gobj(), width );
+                _tracker->setFullVal( _adj_h->gobj(), height );
+            } else {
+                _adj_x->set_value(Quantity::convert(x, "px", unit));
+                _adj_y->set_value(Quantity::convert(y, "px", unit));
+                _adj_w->set_value(Quantity::convert(width, "px", unit));
+                _adj_h->set_value(Quantity::convert(height, "px", unit));
+            }
+        }
+    }
+
+    _update = false;
+}
+
+void
+SelectToolbar::on_inkscape_selection_modified(Inkscape::Selection *selection, guint flags)
+{
+    assert(_desktop->getSelection() == selection);
+    if ((flags & (SP_OBJECT_MODIFIED_FLAG        |
+                     SP_OBJECT_PARENT_MODIFIED_FLAG |
+                     SP_OBJECT_CHILD_MODIFIED_FLAG   )))
+    {
+        layout_widget_update(selection);
+    }
+}
+
+void
+SelectToolbar::on_inkscape_selection_changed(Inkscape::Selection *selection)
+{
+    assert(_desktop->getSelection() == selection);
+    {
+        bool setActive = (selection && !selection->isEmpty());
+
+        for (auto item : _context_items) {
+            if ( setActive != item->get_sensitive() ) {
+                item->set_sensitive(setActive);
+            }
+        }
+
+        layout_widget_update(selection);
+    }
+}
+
+char const *SelectToolbar::get_action_key(double mh, double sh, double mv, double sv)
+{
+    // do the action only if one of the scales/moves is greater than half the last significant
+    // digit in the spinbox (currently spinboxes have 3 fractional digits, so that makes 0.0005). If
+    // the value was changed by the user, the difference will be at least that much; otherwise it's
+    // just rounding difference between the spinbox value and actual value, so no action is
+    // performed
+    double const threshold = 5e-4;
+    char const *const action = ( mh > threshold ? "move:horizontal:" :
+                                 sh > threshold ? "scale:horizontal:" :
+                                 mv > threshold ? "move:vertical:" :
+                                 sv > threshold ? "scale:vertical:" : nullptr );
+    if (!action) {
+        return nullptr;
+    }
+    _action_key = _action_prefix + action;
+    return _action_key.c_str();
+}
+
+void
+SelectToolbar::toggle_lock() {
+    // use this roundabout way of changing image to make sure its size is preserved
+    auto btn = static_cast<Gtk::ToggleButton*>(_lock_btn->get_child());
+    auto image = static_cast<Gtk::Image*>(btn->get_child());
+    if (!image) {
+        g_warning("No GTK image in toolbar button 'lock'");
+        return;
+    }
+    auto size = image->get_pixel_size();
+
+    if ( _lock_btn->get_active() ) {
+        image->set_from_icon_name("object-locked", Gtk::ICON_SIZE_BUTTON);
+    } else {
+        image->set_from_icon_name("object-unlocked", Gtk::ICON_SIZE_BUTTON);
+    }
+    image->set_pixel_size(size);
+}
+
+void
+SelectToolbar::toggle_touch()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    prefs->setBool("/tools/select/touch_box", _select_touch_btn->get_active());
+}
+
+void
+SelectToolbar::toggle_stroke()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool active = _transform_stroke_btn->get_active();
+    prefs->setBool("/options/transform/stroke", active);
+    if ( active ) {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>stroke width</b> is <b>scaled</b> when objects are scaled."));
+    } else {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>stroke width</b> is <b>not scaled</b> when objects are scaled."));
+    }
+}
+
+void
+SelectToolbar::toggle_corners()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool active = _transform_corners_btn->get_active();
+    prefs->setBool("/options/transform/rectcorners", active);
+    if ( active ) {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>rounded rectangle corners</b> are <b>scaled</b> when rectangles are scaled."));
+    } else {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>rounded rectangle corners</b> are <b>not scaled</b> when rectangles are scaled."));
+    }
+}
+
+void
+SelectToolbar::toggle_gradient()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool active = _transform_gradient_btn->get_active();
+    prefs->setBool("/options/transform/gradient", active);
+    if ( active ) {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>gradients</b> are <b>transformed</b> along with their objects when those are transformed (moved, scaled, rotated, or skewed)."));
+    } else {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>gradients</b> remain <b>fixed</b> when objects are transformed (moved, scaled, rotated, or skewed)."));
+    }
+}
+
+void
+SelectToolbar::toggle_pattern()
+{
+    Inkscape::Preferences *prefs = Inkscape::Preferences::get();
+    bool active = _transform_pattern_btn->get_active();
+    prefs->setInt("/options/transform/pattern", active);
+    if ( active ) {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>patterns</b> are <b>transformed</b> along with their objects when those are transformed (moved, scaled, rotated, or skewed)."));
+    } else {
+        _desktop->messageStack()->flash(Inkscape::INFORMATION_MESSAGE, _("Now <b>patterns</b> remain <b>fixed</b> when objects are transformed (moved, scaled, rotated, or skewed)."));
+    }
+}
+
+}
+}
+}
+
+/*
+  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 :