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diff --git a/src/ui/widget/dock.h b/src/ui/widget/dock.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/** @file
+ * @brief A desktop dock pane to dock dialogs, a custom wrapper around gdl-dock.
+ */
+/* Author:
+ * Gustav Broberg <broberg@kth.se>
+ *
+ * Copyright (C) 2007 Authors
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef INKSCAPE_UI_WIDGET_DOCK_H
+#define INKSCAPE_UI_WIDGET_DOCK_H
+
+#include <gtkmm/box.h>
+#include <list>
+#include "ui/widget/dock-item.h"
+
+struct _GdlDock;
+typedef _GdlDock GdlDock;
+struct _GdlDockBar;
+typedef _GdlDockBar GdlDockBar;
+
+namespace Gtk {
+class Paned;
+class ScrolledWindow;
+}
+
+namespace Inkscape {
+namespace UI {
+namespace Widget {
+
+class Dock {
+
+public:
+
+ Dock(Gtk::Orientation orientation=Gtk::ORIENTATION_VERTICAL);
+ ~Dock();
+
+ void addItem(DockItem& item, GdlDockPlacement placement);
+
+ Gtk::Widget& getWidget(); //< return the top widget
+ Gtk::Paned *getParentPaned();
+ Gtk::Paned *getPaned();
+
+ GtkWidget* getGdlWidget(); //< return the top gdl widget
+
+ bool isEmpty() const; //< true iff none of the dock's items are in a docked state
+ bool hasIconifiedItems() const;
+
+ Glib::SignalProxy0<void> signal_layout_changed();
+
+ void hide();
+ void show();
+
+ /** Toggle size of dock between the previous dimensions and the ones sent as parameters */
+ void toggleDockable(int width=0, int height=0);
+
+ /** Scrolls the scrolled window container to make the provided dock item visible, if needed */
+ void scrollToItem(DockItem& item);
+
+protected:
+
+ std::list<const DockItem *> _dock_items; //< added dock items
+
+ /** Interface widgets, will be packed like
+ * _scrolled_window -> (_dock_box -> (_paned -> (_dock -> _filler) | _dock_bar))
+ */
+ Gtk::Box *_dock_box;
+ Gtk::Paned *_paned;
+ GtkWidget *_gdl_dock;
+ GdlDockBar *_gdl_dock_bar;
+ Gtk::Box _filler;
+ Gtk::ScrolledWindow *_scrolled_window;
+
+ /** Internal signal handlers */
+ void _onLayoutChanged();
+ void _onPanedButtonEvent(GdkEventButton *event);
+
+ static gboolean _on_paned_button_event(GtkWidget *widget, GdkEventButton *event,
+ gpointer user_data);
+
+ /** GdlDock signal proxy structures */
+ static const Glib::SignalProxyInfo _signal_layout_changed_proxy;
+
+ /** Standard widths */
+ static const int _default_empty_width;
+ static const int _default_dock_bar_width;
+};
+
+} // namespace Widget
+} // namespace UI
+} // namespace Inkscape
+
+#endif //INKSCAPE_UI_DIALOG_BEHAVIOUR_H
+
+/*
+ Local Variables:
+ mode:c++
+ c-file-style:"stroustrup"
+ c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+ indent-tabs-mode:nil
+ fill-column:99
+ End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
+