gr_UnixCairoGraphics.h

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/* -*- mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: t -*- */
/* AbiWord
 * Copyright (C) 2004-2006 Tomas Frydrych <dr.tomas@yahoo.co.uk>
 * Copyright (C) 2009-2016 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., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301 USA.
 */


#ifndef __GR_UNIXCAIROGRAPHICS_H__
#define __GR_UNIXCAIROGRAPHICS_H__

#include "ut_compiler.h"

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

class ABI_EXPORT GR_UnixCairoAllocInfo : public GR_CairoAllocInfo
{
public:
    GR_UnixCairoAllocInfo(GdkWindow * win, bool double_buffered=true)
        : GR_CairoAllocInfo(false, false, double_buffered),
        m_win(win)
        {}
    GR_UnixCairoAllocInfo(GtkWidget *widget)
        : GR_CairoAllocInfo(false, false, true),
          m_win(gtk_widget_get_window(GTK_WIDGET(widget)))
    {}

    GR_UnixCairoAllocInfo(bool bPreview)
        : GR_CairoAllocInfo(bPreview, true, false),
          m_win(NULL){}

    cairo_t *createCairo() {return NULL;} // we need this since otherwise the class would be abstract
    GdkWindow     * m_win;
};

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

    virtual GR_Image*   createNewImage(const char* pszName,
                                       const UT_ConstByteBufPtr& 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);
    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 GR_Image *  genImageFromRectangle(const UT_Rect & r);

    void                init3dColors(GtkWidget* w);
    void                initWidget(GtkWidget *widget);
    virtual bool        queryProperties(GR_Graphics::Properties gp) const;

    virtual bool        getColor3D(GR_Color3D name, UT_RGBColor &color);

    virtual void        fillRect(GR_Color3D c,
                                 UT_sint32 x, UT_sint32 y,
                                 UT_sint32 w, UT_sint32 h);
    virtual void      flush(void);

protected:
    virtual void        _resetClip(void);
    static void     widget_size_allocate (GtkWidget        *widget,
                                      GtkAllocation    *allocation,
                                      GR_UnixCairoGraphics *me);
    static void     widget_destroy (GtkWidget        *widget,
                                      GR_UnixCairoGraphics *me);
    GR_UnixCairoGraphics(GdkWindow * win = NULL, bool double_buffered=true);
    virtual GdkWindow * _getWindow(void)
    {  return m_pWin;}

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

private:
    GdkWindow *m_pWin;
    bool m_CairoCreated;
    bool m_Painting;
    gulong m_Signal, m_DestroySignal;
    GtkWidget *m_Widget;
    GtkStyleContext* m_styleBg;
    GtkStyleContext* m_styleHighlight;
};


#endif