gcp/view.h

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// -*- C++ -*-

/*
 * GChemPaint library
 * view.h
 *
 * Copyright (C) 2001-2011 Jean Bréfort <jean.brefort@normalesup.org>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
 * USA
 */

#ifndef GCHEMPAINT_VIEW_H
#define GCHEMPAINT_VIEW_H

#include <gcu/macros.h>
#include <gccv/client.h>
#include <list>
#include <map>

namespace gccv {
        class Canvas;
        class Text;
}

namespace gcu {
        class Object;
};

namespace gcugtk {
        class UIManager;
}

namespace gcp {

class Atom;
class Bond;
class Document;
class WidgetData;

#define GCHEMPAINT_ATOM_NAME "application/x-gchempaint"
extern GtkTargetEntry const targets[];

class View: public gccv::Client
{
public:
        //Constructor and destructor
        View (Document *pDoc, bool Embedded);
        virtual ~View ();

        //Interface
public:
        GtkWidget* GetWidget () {return m_pWidget;}
        Document* GetDoc () {return m_pDoc;}
        void AddObject (gcu::Object *pObject);
        void Update (gcu::Object *pObject);
        GtkWidget* CreateNewWidget ();
        void OnDestroy (GtkWidget* widget);
        double GetZoomFactor ();
        void UpdateFont ();
        void Remove (gcu::Object* pObject);
        double GetFontHeight () {return m_dFontHeight;}
        gchar* GetFontName () {return m_sFontName;}
        gchar* GetSmallFontName () {return m_sSmallFontName;}
        PangoFontDescription* GetPangoFontDesc () {return m_PangoFontDesc;}
        PangoFontDescription* GetPangoSmallFontDesc () {return m_PangoSmallFontDesc;}
        void OnDeleteSelection (GtkWidget* w);
        void OnCopySelection (GtkWidget* w, GtkClipboard* clipboard);
        void OnPasteSelection (GtkWidget* w, GtkClipboard* clipboard);
        void OnCutSelection (GtkWidget* w, GtkClipboard* clipboard);
        bool OnKeyPress (GtkWidget* w, GdkEventKey* event);
        bool OnKeyRelease (GtkWidget* w, GdkEventKey* event);
        void SetTextActive (gccv::Text* item);
        bool PrepareUnselect ();
        void OnReceive (GtkClipboard* clipboard, GtkSelectionData* selection_data);
        void OnSelectAll ();
        bool IsEmbedded () {return m_bEmbedded;}
        int GetNbWidgets () {return m_Widgets.size ();}
        void ExportImage (std::string const &filename, const char* type, int resolution = -1);
        char *BuildSVG ();
        char *BuildEPS ();
        GdkPixbuf *BuildPixbuf (int resolution);
        void EnsureSize ();
        void Zoom (double zoom);
        void ShowCursor (bool show);
        void UpdateTheme ();
        void Render (cairo_t *cr);
        void SetSelectionState (gcu::Object *object, int state);
        // Signals
        // there is no needd to document these since the documentation in gccv/client.h is appropriate.
        bool OnButtonPressed (gccv::ItemClient *client, unsigned button, double x, double y, unsigned state);
        bool OnButtonReleased (gccv::ItemClient *client, unsigned button, double x, double y, unsigned state);
        bool OnDrag (gccv::ItemClient *client, double x, double y, unsigned state);
        bool OnMotion (gccv::ItemClient *client, double x, double y, unsigned state);
        bool OnLeaveNotify (unsigned state);

        WidgetData *GetData () {return m_pData;}

        void GetVisibleArea (double &x0, double &y0, double &x1, double &y1);

        //Implementation
private:
        WidgetData* m_pData;
        Document* m_pDoc;
        GtkWidget* m_pWidget;
        std::list<GtkWidget*> m_Widgets;
        PangoFontDescription* m_PangoFontDesc, *m_PangoSmallFontDesc;
        double m_dFontHeight;
        gchar* m_sFontName, *m_sSmallFontName;
        int m_width, m_height;
        double m_lastx, m_lasty;
        bool m_bEmbedded;
        gcugtk::UIManager *m_UIManager;
        bool m_Dragging;
        gcu::Object *m_CurObject;
        Atom *m_CurAtom;


GCU_RO_PROP (double, BaseLineOffset)
GCU_RO_PROP (gccv::Text *, ActiveRichText)
GCU_RO_PROP (double, CHeight)
GCU_RO_PROP (double, HWidth)
};

void on_receive (GtkClipboard *clipboard, GtkSelectionData *selection_data, View * pView);

}       //      namespace gcp

#endif // GCHEMPAINT_VIEW_H