widgetdata.h

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00001 // -*- C++ -*-
00002 
00003 /* 
00004  * GChemPaint library
00005  * widgetdata.h
00006  *
00007  * Copyright (C) 2002-2008 Jean Bréfort <jean.brefort@normalesup.org>
00008  *
00009  * This program is free software; you can redistribute it and/or 
00010  * modify it under the terms of the GNU General Public License as 
00011  * published by the Free Software Foundation; either version 2 of the
00012  * License, or (at your option) any later version.
00013  *
00014  * This program is distributed in the hope that it will be useful,
00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00017  * GNU General Public License for more details.
00018  *
00019  * You should have received a copy of the GNU General Public License
00020  * along with this program; if not, write to the Free Software
00021  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
00022  * USA
00023  */
00024 
00025 #ifndef GCHEMPAINT_WIDGET_DATA_H
00026 #define GCHEMPAINT_WIDGET_DATA_H
00027 
00028 #include <gcu/object.h>
00029 #include <gccv/structs.h>
00030 #include <list>
00031 #include <map>
00032 
00034 namespace gcp {
00035 
00036 class Application;
00037 class View;
00038 
00039 extern guint ClipboardDataType, ClipboardDataType1;
00040 extern xmlChar* ClipboardData;
00041 extern bool cleared;
00042 void on_receive_targets (GtkClipboard *clipboard, GtkSelectionData *selection_data, Application *App);
00043 void on_clear_data (GtkClipboard *clipboard, Application *App);
00044 
00048 enum SelectionState
00049 {
00053         SelStateUnselected = 0,
00057         SelStateSelected,
00061         SelStateUpdating,
00065         SelStateErasing
00066 };
00067 
00073 class WidgetData
00074 {
00075 public:
00079         View* m_View;
00083         GtkWidget *Canvas;
00087         double Zoom;
00091 //      std::map<gcu::Object const*, GnomeCanvasGroup*>Items;
00095         std::list<gcu::Object*>SelectedObjects;
00096         
00101         bool IsSelected (gcu::Object const *obj) const;
00107         void SetSelected (gcu::Object *obj);
00113         void Unselect (gcu::Object *obj);
00117         void UnselectAll ();
00126         void MoveSelectedItems (double dx, double dy);
00134         void MoveSelection (double dx, double dy);
00142         void RotateSelection (double x, double y, double angle);
00146         void ClearSelection () {SelectedObjects.clear();}
00152         void Copy (GtkClipboard* clipboard);
00158         void GetSelectionBounds (gccv::Rect &rect) const;
00162         bool HasSelection () {return !(SelectedObjects.empty());}
00166         void SelectAll ();
00171         static xmlDocPtr GetXmlDoc (GtkClipboard* clipboard);
00178         void ShowSelection (bool state);
00185         void GetObjectBounds (gcu::Object const *obj, gccv::Rect *rect) const;
00186 
00187 private:
00188         void MoveItems (gcu::Object *obj, double dx, double dy);
00189         void GetObjectBounds (gcu::Object const* obj, gccv::Rect &rect) const;
00190 };
00191 
00192 }       // namespace gcp
00193 
00194 #endif //GCHEMPAINT_WIDGET_DATA_H

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