1 /* Copyright (C) 2008 The goocanvasmm Development Team 2 * 3 * This library is free software; you can redistribute it and/or 4 * modify it under the terms of the GNU Lesser General Public 5 * License as published by the Free Software Foundation; either 6 * version 2.1 of the License, or (at your option) any later version. 7 * 8 * This library is distributed in the hope that it will be useful, 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * Lesser General Public License for more details. 12 * 13 * You should have received a copy of the GNU Lesser General Public 14 * License along with this library; if not, write to the Free 15 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 16 */ 17 18 #ifndef _GOOCANVASMM_EXAMPLEWINDOW_H 19 #define _GOOCANVASMM_EXAMPLEWINDOW_H 20 21 #include <gtkmm.h> 22 #include <goocanvasmm.h> 23 24 class ExampleWindow : public Gtk::Window 25 { 26 public: 27 ExampleWindow(); 28 29 protected: 30 31 enum DragItem 32 { 33 DRAG_ITEM_NONE, 34 DRAG_ITEM_RECTANGLE, 35 DRAG_ITEM_ELLIPSE 36 }; 37 38 void make_widget_draggable(Gtk::Widget& widget, DragItem drag_item); 39 40 void on_button_drag_data_get(const Glib::RefPtr<Gdk::DragContext>& drag_context, Gtk::SelectionData& selection_data, guint info, guint time, DragItem drag_item); 41 bool on_canvas_drag_drop(const Glib::RefPtr<Gdk::DragContext>& drag_context, int x, int y, guint timestamp); 42 bool on_canvas_drag_motion(const Glib::RefPtr<Gdk::DragContext>& drag_context, int x, int y, guint timestamp); 43 void on_canvas_drag_data_received(const Glib::RefPtr<Gdk::DragContext>& drag_context, int x, int y, const Gtk::SelectionData& selection_data, guint info, guint timestamp); 44 45 Glib::RefPtr<Goocanvas::Item> create_canvas_item(DragItem drag_item, int x, int y); 46 47 static DragItem get_drag_item_from_selection_data(const Gtk::SelectionData& selection_data); 48 49 Goocanvas::Canvas m_canvas; 50 51 Gtk::VBox m_vbox; 52 Gtk::HBox m_hbox; 53 Gtk::Button m_button_rect, m_button_ellipse; 54 55 std::vector<Gtk::TargetEntry> m_drag_targets; 56 Glib::RefPtr<Goocanvas::Item> m_layout_item_dropping; 57 bool m_drag_preview_requested; 58 }; 59 60 #endif //_GOOCANVASMM_EXAMPLEWINDOW_H 61 62