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-rw-r--r--src/ui/widget/canvas-grid.cpp318
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diff --git a/src/ui/widget/canvas-grid.cpp b/src/ui/widget/canvas-grid.cpp
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+// SPDX-License-Identifier: GPL-2.0-or-later
+
+/*
+ * Author:
+ * Tavmjong Bah
+ *
+ * Rewrite of code originally in desktop-widget.cpp.
+ *
+ * Copyright (C) 2020 Tavmjong Bah
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+
+// The scrollbars, and canvas are tightly coupled so it makes sense to have a dedicated
+// widget to handle their interactions. The buttons are along for the ride. I don't see
+// how to add the buttons easily via a .ui file (which would allow the user to put any
+// buttons they want in their place).
+
+#include <glibmm/i18n.h>
+#include <gtkmm/enums.h>
+#include <gtkmm/label.h>
+
+#include "canvas-grid.h"
+
+#include "desktop.h" // Hopefully temp.
+#include "desktop-events.h" // Hopefully temp.
+
+#include "display/control/canvas-item-drawing.h" // sticky
+
+#include "ui/icon-loader.h"
+#include "ui/widget/canvas.h"
+#include "ui/widget/ink-ruler.h"
+
+#include "widgets/desktop-widget.h" // Hopefully temp.
+
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+CanvasGrid::CanvasGrid(SPDesktopWidget *dtw)
+{
+ _dtw = dtw;
+ set_name("CanvasGrid");
+
+ // Canvas
+ _canvas = Gtk::manage(new Inkscape::UI::Widget::Canvas());
+ _canvas->set_hexpand(true);
+ _canvas->set_vexpand(true);
+ _canvas->set_can_focus(true);
+ _canvas->signal_event().connect(sigc::mem_fun(*this, &CanvasGrid::SignalEvent)); // TEMP
+
+ _canvas_overlay.add(*_canvas);
+ _canvas_overlay.add_overlay(*_command_palette.get_base_widget());
+
+ // Horizontal Scrollbar
+ _hadj = Gtk::Adjustment::create(0.0, -4000.0, 4000.0, 10.0, 100.0, 4.0);
+ _hadj->signal_value_changed().connect(sigc::mem_fun(_dtw, &SPDesktopWidget::on_adjustment_value_changed));
+ _hscrollbar = Gtk::manage(new Gtk::Scrollbar(_hadj, Gtk::ORIENTATION_HORIZONTAL));
+ _hscrollbar->set_name("CanvasScrollbar");
+ _hscrollbar->set_hexpand(true);
+ _hscrollbar->set_no_show_all();
+
+ // Vertical Scrollbar
+ _vadj = Gtk::Adjustment::create(0.0, -4000.0, 4000.0, 10.0, 100.0, 4.0);
+ _vadj->signal_value_changed().connect(sigc::mem_fun(_dtw, &SPDesktopWidget::on_adjustment_value_changed));
+ _vscrollbar = Gtk::manage(new Gtk::Scrollbar(_vadj, Gtk::ORIENTATION_VERTICAL));
+ _vscrollbar->set_name("CanvasScrollbar");
+ _vscrollbar->set_vexpand(true);
+ _vscrollbar->set_no_show_all();
+
+ // Horizontal Ruler
+ _hruler = Gtk::manage(new Inkscape::UI::Widget::Ruler(Gtk::ORIENTATION_HORIZONTAL));
+ _hruler->add_track_widget(*_canvas);
+ _hruler->set_hexpand(true);
+ // Tooltip/Unit set elsewhere.
+
+ // For creating guides, etc.
+ _hruler->signal_button_press_event().connect(
+ sigc::bind(sigc::mem_fun(*_dtw, &SPDesktopWidget::on_ruler_box_button_press_event), _hruler, true));
+ _hruler->signal_button_release_event().connect(
+ sigc::bind(sigc::mem_fun(*_dtw, &SPDesktopWidget::on_ruler_box_button_release_event), _hruler, true));
+ _hruler->signal_motion_notify_event().connect(
+ sigc::bind(sigc::mem_fun(*_dtw, &SPDesktopWidget::on_ruler_box_motion_notify_event), _hruler, true));
+
+ // Vertical Ruler
+ _vruler = Gtk::manage(new Inkscape::UI::Widget::Ruler(Gtk::ORIENTATION_VERTICAL));
+ _vruler->add_track_widget(*_canvas);
+ _vruler->set_vexpand(true);
+ // Tooltip/Unit set elsewhere.
+
+ // For creating guides, etc.
+ _vruler->signal_button_press_event().connect(
+ sigc::bind(sigc::mem_fun(*_dtw, &SPDesktopWidget::on_ruler_box_button_press_event), _vruler, false));
+ _vruler->signal_button_release_event().connect(
+ sigc::bind(sigc::mem_fun(*_dtw, &SPDesktopWidget::on_ruler_box_button_release_event), _vruler, false));
+ _vruler->signal_motion_notify_event().connect(
+ sigc::bind(sigc::mem_fun(*_dtw, &SPDesktopWidget::on_ruler_box_motion_notify_event), _vruler, false));
+
+ // Guide Lock
+ auto image1 = Gtk::manage(new Gtk::Image("object-locked", Gtk::ICON_SIZE_MENU));
+ _guide_lock = Gtk::manage(new Gtk::ToggleButton());
+ _guide_lock->set_name("LockGuides");
+ _guide_lock->add(*image1);
+ _guide_lock->set_no_show_all();
+ // To be replaced by Gio::Action:
+ _guide_lock->signal_toggled().connect(sigc::mem_fun(_dtw, &SPDesktopWidget::update_guides_lock));
+ _guide_lock->set_tooltip_text(_("Toggle lock of all guides in the document"));
+
+ // CMS Adjust
+ auto image2 = Gtk::manage(new Gtk::Image("color-management", Gtk::ICON_SIZE_MENU));
+ _cms_adjust = Gtk::manage(new Gtk::ToggleButton());
+ _cms_adjust->set_name("CMS_Adjust");
+ _cms_adjust->add(*image2);
+ // Can't access via C++ API, fixed in Gtk4.
+ gtk_actionable_set_action_name( GTK_ACTIONABLE(_cms_adjust->gobj()), "win.canvas-color-manage");
+ _cms_adjust->set_tooltip_text(_("Toggle color-managed display for this document window"));
+ _cms_adjust->set_no_show_all();
+
+ // Sticky Zoom
+ auto image3 = Gtk::manage(sp_get_icon_image("zoom-original", Gtk::ICON_SIZE_MENU));
+ _sticky_zoom = Gtk::manage(new Gtk::ToggleButton());
+ _sticky_zoom->set_name("StickyZoom");
+ _sticky_zoom->add(*image3);
+ // To be replaced by Gio::Action:
+ _sticky_zoom->signal_toggled().connect(sigc::mem_fun(_dtw, &SPDesktopWidget::sticky_zoom_toggled));
+ _sticky_zoom->set_tooltip_text(_("Zoom drawing if window size changes"));
+ _sticky_zoom->set_no_show_all();
+
+ // Top row
+ attach(*_guide_lock, 0, 0, 1, 1);
+ attach(*_hruler, 1, 0, 1, 1);
+ attach(*_sticky_zoom, 2, 0, 1, 1);
+
+ // Middle row
+ attach(*_vruler, 0, 1, 1, 1);
+ attach(_canvas_overlay, 1, 1, 1, 1);
+ attach(*_vscrollbar, 2, 1, 1, 1);
+
+ // Bottom row
+ attach(*_hscrollbar, 1, 2, 1, 1);
+ attach(*_cms_adjust, 2, 2, 1, 1);
+
+ // Update rulers on size change.
+ signal_size_allocate().connect(sigc::mem_fun(*this, &CanvasGrid::OnSizeAllocate));
+
+ show_all();
+}
+
+CanvasGrid::~CanvasGrid() {
+}
+
+// _dt2r should be a member of _canvas.
+// get_display_area should be a member of _canvas.
+void
+CanvasGrid::UpdateRulers()
+{
+ Geom::Rect viewbox = _dtw->desktop->get_display_area().bounds();
+ // Use integer values of the canvas for calculating the display area, similar
+ // to the integer values used for positioning the grid lines. (see Canvas::scrollTo(),
+ // where ix and iy are rounded integer values; these values are stored in CanvasItemBuffer->rect,
+ // and used for drawing the grid). By using the integer values here too, the ruler ticks
+ // will be perfectly aligned to the grid
+ double _dt2r = _dtw->_dt2r;
+ Geom::Point _ruler_origin = _dtw->_ruler_origin;
+
+ double lower_x = _dt2r * (viewbox.left() - _ruler_origin[Geom::X]);
+ double upper_x = _dt2r * (viewbox.right() - _ruler_origin[Geom::X]);
+ _hruler->set_range(lower_x, upper_x);
+
+ double lower_y = _dt2r * (viewbox.bottom() - _ruler_origin[Geom::Y]);
+ double upper_y = _dt2r * (viewbox.top() - _ruler_origin[Geom::Y]);
+ if (_dtw->desktop->is_yaxisdown()) {
+ std::swap(lower_y, upper_y);
+ }
+ _vruler->set_range(lower_y, upper_y);
+}
+
+void
+CanvasGrid::ShowScrollbars(bool state)
+{
+ _show_scrollbars = state;
+
+ if (_show_scrollbars) {
+ // Show scrollbars
+ _hscrollbar->show();
+ _vscrollbar->show();
+ _cms_adjust->show();
+ _cms_adjust->show_all_children();
+ _sticky_zoom->show();
+ _sticky_zoom->show_all_children();
+ } else {
+ // Hide scrollbars
+ _hscrollbar->hide();
+ _vscrollbar->hide();
+ _cms_adjust->hide();
+ _sticky_zoom->hide();
+ }
+}
+
+void
+CanvasGrid::ToggleScrollbars()
+{
+ _show_scrollbars = !_show_scrollbars;
+ ShowScrollbars(_show_scrollbars);
+
+ // Will be replaced by actions
+ auto prefs = Inkscape::Preferences::get();
+ prefs->setBool("/fullscreen/scrollbars/state", _show_scrollbars);
+ prefs->setBool("/window/scrollbars/state", _show_scrollbars);
+}
+
+void
+CanvasGrid::ShowRulers(bool state)
+{
+ // Sticky zoom button is always shown. We must adjust canvas when rulers are toggled or canvas
+ // won't expand fully.
+ _show_rulers = state;
+
+ if (_show_rulers) {
+ // Show rulers
+ _hruler->show();
+ _vruler->show();
+ _guide_lock->show();
+ _guide_lock->show_all_children();
+ remove(_canvas_overlay);
+ attach(_canvas_overlay, 1, 1, 1, 1);
+ } else {
+ // Hide rulers
+ _hruler->hide();
+ _vruler->hide();
+ _guide_lock->hide();
+ remove(_canvas_overlay);
+ attach(_canvas_overlay, 1, 0, 1, 2);
+ }
+}
+
+void
+CanvasGrid::ToggleRulers()
+{
+ _show_rulers = !_show_rulers;
+ ShowRulers(_show_rulers);
+
+ // Will be replaced by actions
+ auto prefs = Inkscape::Preferences::get();
+ prefs->setBool("/fullscreen/rulers/state", _show_rulers);
+ prefs->setBool("/window/rulers/state", _show_rulers);
+}
+
+void
+CanvasGrid::ToggleCommandPalette() {
+ _command_palette.toggle();
+}
+
+void
+CanvasGrid::ShowCommandPalette(bool state)
+{
+ if (state) {
+ _command_palette.open();
+ }
+ _command_palette.close();
+}
+
+// Update rulers on change of widget size, but only if allocation really changed.
+void
+CanvasGrid::OnSizeAllocate(Gtk::Allocation& allocation)
+{
+ if (!(_allocation == allocation)) { // No != function defined!
+ _allocation = allocation;
+ UpdateRulers();
+ }
+}
+
+// This belong in Canvas class
+bool
+CanvasGrid::SignalEvent(GdkEvent *event)
+{
+ if (event->type == GDK_BUTTON_PRESS) {
+ _canvas->grab_focus();
+ _command_palette.close();
+ }
+
+ if (event->type == GDK_BUTTON_PRESS && event->button.button == 3) {
+ if (event->button.state & GDK_SHIFT_MASK) {
+ _dtw->desktop->getCanvasDrawing()->set_sticky(true);
+ } else {
+ _dtw->desktop->getCanvasDrawing()->set_sticky(false);
+ }
+ }
+
+ // Pass keyboard events back to the desktop root handler so TextTool can work
+ if ((event->type == GDK_KEY_PRESS || event->type == GDK_KEY_RELEASE) && !_canvas->get_current_canvas_item()) {
+ return sp_desktop_root_handler(event, _dtw->desktop);
+ }
+ return false;
+}
+
+// TODO Add actions so we can set shortcuts.
+// * Sticky Zoom
+// * CMS Adjust
+// * Guide Lock
+
+
+} // namespace Widget
+} // 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 :