# gcp/view.h

    00001 // -*- C++ -*-
    00002
    00003 /*
    00004  * GChemPaint library
    00005  * view.h
    00006  *
    00007  * Copyright (C) 2001-2008 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_VIEW_H
    00026 #define GCHEMPAINT_VIEW_H
    00027
    00028 #include <map>
    00029 #include <list>
    00030 #include <libgnomecanvas/libgnomecanvas.h>
    00031 #include <canvas/gcp-canvas-pango.h>
    00032 #include <gcu/macros.h>
    00033 #include "atom.h"
    00034 #include "bond.h"
    00035
    00036 namespace gcp {
    00037
    00038 class Document;
    00039 class WidgetData;
    00040
    00041 #define GCHEMPAINT_ATOM_NAME "application/x-gchempaint"
    00042 extern GtkTargetEntry const targets[];
    00043
    00047 class View
    00048 {
    00049 public:
    00050         //Constructor and destructor
    00058         View (Document *pDoc, bool Embedded);
    00062         virtual ~View ();
    00063
    00064         //Interface
    00065 public:
    00069         GtkWidget* GetWidget () {return m_pWidget;}
    00073         Document* GetDoc () {return m_pDoc;}
    00082         bool OnEvent (GnomeCanvasItem *item, GdkEvent *event, GtkWidget* widget);
    00088         void AddObject (gcu::Object const *pObject);
    00094         void Update (gcu::Object const *pObject);
    00100         GtkWidget* CreateNewWidget ();
    00106         void OnDestroy (GtkWidget* widget);
    00114         GnomeCanvasItem* GetCanvasItem (GtkWidget* widget, gcu::Object* object);
    00118         GnomeCanvasItem* GetBackground ();
    00122         double GetZoomFactor ();
    00126         void UpdateFont ();
    00132         void Remove (gcu::Object* pObject);
    00136         PangoContext* GetPangoContext () {return m_PangoContext;}
    00140         double GetFontHeight () {return m_dFontHeight;}
    00144         gchar* GetFontName () {return m_sFontName;}
    00148         gchar* GetSmallFontName () {return m_sSmallFontName;}
    00152         PangoFontDescription* GetPangoFontDesc () {return m_PangoFontDesc;}
    00156         PangoFontDescription* GetPangoSmallFontDesc () {return m_PangoSmallFontDesc;}
    00162         void OnDeleteSelection (GtkWidget* w);
    00169         void OnCopySelection (GtkWidget* w, GtkClipboard* clipboard);
    00176         void OnPasteSelection (GtkWidget* w, GtkClipboard* clipboard);
    00183         void OnCutSelection (GtkWidget* w, GtkClipboard* clipboard);
    00191         bool OnKeyPress (GtkWidget* w, GdkEventKey* event);
    00199         bool OnKeyRelease (GtkWidget* w, GdkEventKey* event);
    00208         bool OnSize (GtkWidget *w, int width, int height);
    00218         void UpdateSize (double x1, double y1, double x2, double y2);
    00225         void SetGnomeCanvasPangoActive (GnomeCanvasPango* item);
    00232         bool PrepareUnselect ();
    00239         void OnReceive (GtkClipboard* clipboard, GtkSelectionData* selection_data);
    00243         void OnSelectAll ();
    00247         bool IsEmbedded () {return m_bEmbedded;}
    00251         int GetNbWidgets () {return m_Widgets.size ();}
    00262         void ExportImage (std::string const &filename, const char* type, int resolution = -1);
    00266         xmlDocPtr BuildSVG ();
    00274         GdkPixbuf *BuildPixbuf (int resolution);
    00279         void EnsureSize ();
    00285         void Zoom (double zoom);
    00291         void ShowCursor (bool show);
    00295         void UpdateTheme ();
    00301         void Render (cairo_t *cr);
    00302
    00303         //Implementation
    00304 private:
    00305         WidgetData* m_pData;
    00306         Document* m_pDoc;
    00307         GtkWidget* m_pWidget;
    00308         std::list<GtkWidget*> m_Widgets;
    00309         PangoContext* m_PangoContext;
    00310         PangoFontDescription* m_PangoFontDesc, *m_PangoSmallFontDesc;
    00311         double m_dFontHeight;
    00312         gchar* m_sFontName, *m_sSmallFontName;
    00313         int m_width, m_height;
    00314         double m_lastx, m_lasty;
    00315         bool m_bEmbedded;
    00316         GtkUIManager *m_UIManager;
    00317         bool m_Dragging;
    00318         gcu::Object *m_CurObject;
    00319
    00323 GCU_RO_PROP (double, BaseLineOffset)
    00327 GCU_RO_PROP (GnomeCanvasPango*, ActiveRichText)
    00328 };
    00329
    00338 bool on_event (GnomeCanvasItem *item, GdkEvent *event, GtkWidget* widget);
    00346 void on_receive (GtkClipboard *clipboard, GtkSelectionData *selection_data, View * pView);
    00347
    00348 }       //      namespace gcp
    00349
    00350 #endif // GCHEMPAINT_VIEW_H