gr_UnixCairoGraphics.h

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/* -*- mode: C++; tab-width: 4; c-basic-offset: 4; -*- */
/* AbiWord
 * Copyright (C) 2004-2006 Tomas Frydrych <dr.tomas@yahoo.co.uk>
 * Copyright (C) 2009 Hubert Figuiere
 * 
 * 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 2
 * 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., 59 Temple Place - Suite 330, Boston, MA  
 * 02111-1307, USA.
 */


#ifndef __GR_UNIXCAIROGRAPHICS_H__
#define __GR_UNIXCAIROGRAPHICS_H__

#include <gdk/gdk.h>
#include "gr_CairoGraphics.h"

class ABI_EXPORT GR_UnixCairoAllocInfo : public GR_CairoAllocInfo
{
public:
    GR_UnixCairoAllocInfo(GdkWindow * win, bool double_buffered=false)
        : GR_CairoAllocInfo(false, false, double_buffered),
        m_win(win)
        {}
    GR_UnixCairoAllocInfo(GtkWidget *widget)
        : GR_CairoAllocInfo(false, false, GTK_WIDGET_DOUBLE_BUFFERED(widget)),
          m_win(GTK_WIDGET(widget)->window)
    {}
    
    GR_UnixCairoAllocInfo(bool bPreview)
        : GR_CairoAllocInfo(bPreview, true, false),
          m_win(NULL){}
    virtual cairo_t *createCairo();

    GdkWindow     * m_win;
};

class ABI_EXPORT GR_UnixCairoGraphicsBase
    : public GR_CairoGraphics
{
 public:
    ~GR_UnixCairoGraphicsBase();

    virtual GR_Image*   createNewImage(const char* pszName,
                                       const UT_ByteBuf* pBB,
                                       const std::string& mimetype,
                                       UT_sint32 iDisplayWidth,
                                       UT_sint32 iDisplayHeight,
                                       GR_Image::GRType =GR_Image::GRT_Raster);
 protected:
    GR_UnixCairoGraphicsBase();
    GR_UnixCairoGraphicsBase(cairo_t *cr, UT_uint32 iDeviceResolution);

};


class ABI_EXPORT GR_UnixCairoGraphics
    : public GR_UnixCairoGraphicsBase
{
public:
    ~GR_UnixCairoGraphics();
    static UT_uint32       s_getClassId() {return GRID_UNIX_PANGO;}
    virtual UT_uint32      getClassId() {return s_getClassId();}

    static const char *    graphicsDescriptor(){return "Unix Cairo Pango";}
    static GR_Graphics *   graphicsAllocator(GR_AllocInfo&);
    GdkWindow *  getWindow () {return m_pWin;}

    virtual GR_Font * getGUIFont(void);
    
    virtual void        setCursor(GR_Graphics::Cursor c);
    void                createPixmapFromXPM(char ** pXPM,GdkPixmap *source,
                                            GdkBitmap * mask);
    virtual void        scroll(UT_sint32, UT_sint32);
    virtual void        scroll(UT_sint32 x_dest, UT_sint32 y_dest,
                           UT_sint32 x_src, UT_sint32 y_src,
                           UT_sint32 width, UT_sint32 height);
    virtual void        saveRectangle(UT_Rect & r, UT_uint32 iIndx);
    virtual void        restoreRectangle(UT_uint32 iIndx);
    virtual GR_Image *  genImageFromRectangle(const UT_Rect & r);

    void                init3dColors(GtkStyle * pStyle);
    void                initWidget(GtkWidget *widget);

protected:
    virtual void        _resetClip(void);
    static void     widget_size_allocate (GtkWidget        *widget,
                                      GtkAllocation    *allocation,
                                      GR_UnixCairoGraphics *me);
    GR_UnixCairoGraphics(GdkDrawable * win = NULL, bool double_buffered=false);
    virtual GdkDrawable * _getDrawable(void)
    {  return static_cast<GdkDrawable *>(m_pWin);}

    UT_GenericVector<UT_Rect*>     m_vSaveRect;
    UT_GenericVector<GdkPixbuf *>  m_vSaveRectBuf;

    virtual void _beginPaint();
    virtual void _endPaint();

private:
    GdkWindow *m_pWin;
    bool m_double_buffered;
};


#endif