widgetdata.h

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00001 // -*- C++ -*-
00002 
00003 /* 
00004  * GChemPaint library
00005  * widgetdata.h
00006  *
00007  * Copyright (C) 2002-2011 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 #include <set>
00033 
00035 namespace gcp {
00036 
00037 class Application;
00038 class View;
00039 
00046 extern guint ClipboardDataType, ClipboardDataType1;
00051         extern xmlChar* ClipboardData;
00055 extern char* ClipboardTextData;
00063 void on_receive_targets (GtkClipboard *clipboard, GtkSelectionData *selection_data, Application *App);
00070 void on_clear_data (GtkClipboard *clipboard, gcu::Object *obj);
00071 
00075 enum SelectionState
00076 {
00080         SelStateUnselected = 0,
00084         SelStateSelected,
00088         SelStateUpdating,
00092         SelStateErasing
00093 };
00094 
00100 class WidgetData
00101 {
00102 public:
00106         View* m_View;
00110         GtkWidget *Canvas;
00114         double Zoom;
00118 //      std::map<gcu::Object const*, GnomeCanvasGroup*>Items;
00122         std::list<gcu::Object*>SelectedObjects;
00123         
00128         bool IsSelected (gcu::Object const *obj) const;
00129         
00135         bool ChildrenSelected (gcu::Object const *obj) const;
00136 
00137         
00143         gcu::Object *GetSelectedAncestor (gcu::Object *obj);
00144 
00151         void SetSelected (gcu::Object *obj, int state = gcp::SelStateSelected);
00157         void Unselect (gcu::Object *obj);
00161         void UnselectAll ();
00170         void MoveSelectedItems (double dx, double dy);
00178         void MoveSelection (double dx, double dy);
00186         void RotateSelection (double x, double y, double angle);
00190         void ClearSelection () {SelectedObjects.clear();}
00196         void Copy (GtkClipboard* clipboard);
00202         void GetSelectionBounds (gccv::Rect &rect) const;
00206         bool HasSelection () {return !(SelectedObjects.empty());}
00210         void SelectAll ();
00215         static xmlDocPtr GetXmlDoc (GtkClipboard* clipboard);
00222         void ShowSelection (bool state);
00229         void GetObjectBounds (gcu::Object const *obj, gccv::Rect *rect) const;
00236         void GetObjectsBounds (std::set <gcu::Object const *> const &objects, gccv::Rect *rect) const;
00237          
00242         void SimplifySelection ();
00243 
00244 private:
00245         void MoveItems (gcu::Object *obj, double dx, double dy);
00246         void GetObjectBounds (gcu::Object const* obj, gccv::Rect &rect) const;
00247 };
00248 
00249 }       // namespace gcp
00250 
00251 #endif //GCHEMPAINT_WIDGET_DATA_H