gr_CairoNullGraphics.h

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/* AbiSource Application Framework
 * Copyright (C) 1998 AbiSource, Inc.
 *
 * 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 XAP_CAIRONULLGRAPHICS_H
#define XAP_CAIRONULLGRAPHICS_H

#include "ut_vector.h"
#include "gr_CairoGraphics.h"
#include "gr_Image.h"
#include "ut_misc.h"

class UT_ByteBuf;

/*****************************************************************/
/*****************************************************************/
class ABI_EXPORT GR_CairoNullGraphicsAllocInfo : public GR_AllocInfo
{
public:
    GR_CairoNullGraphicsAllocInfo()
      {}

    virtual GR_GraphicsId getType() const {return GRID_CAIRO_NULL;}
    virtual bool isPrinterGraphics() const {return false;}
};



class ABI_EXPORT CairoNull_Graphics : public GR_CairoGraphics
{
    // all constructors are protected; instances must be created via
    // GR_GraphicsFactory
public:
    virtual ~CairoNull_Graphics();

    static UT_uint32 s_getClassId() {return GRID_CAIRO_NULL;}
    virtual UT_uint32 getClassId() {return s_getClassId();}

    virtual GR_Capability getCapability(){UT_ASSERT(UT_NOT_IMPLEMENTED); return GRCAP_UNKNOWN;}
    static const char *    graphicsDescriptor(void) { return "Cairo Null Graphics";}
    static GR_Graphics *   graphicsAllocator(GR_AllocInfo&);

    virtual void drawChars(const UT_UCSChar* pChars,
                   int iCharOffset, int iLength,
                   UT_sint32 xoff, UT_sint32 yoff,
                   int * pCharWidths = NULL);

    virtual void setColor(const UT_RGBColor& clr);
    virtual void getColor(UT_RGBColor& clr);
    virtual GR_Font* getGUIFont();

    virtual void drawLine(UT_sint32 x1, UT_sint32 y1, UT_sint32 x2, UT_sint32 y2);
    virtual void setLineWidth(UT_sint32);
    virtual void xorLine(UT_sint32, UT_sint32, UT_sint32, UT_sint32);
    virtual void polyLine(const UT_Point * pts, UT_uint32 nPoints);
    virtual void fillRect(const UT_RGBColor& c, UT_sint32 x, UT_sint32 y, UT_sint32 w, UT_sint32 h);
    virtual void invertRect(const UT_Rect*);
    virtual void setClipRect(const UT_Rect*);
    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 clearArea(UT_sint32, UT_sint32, UT_sint32, UT_sint32);

    virtual void drawImage(GR_Image* pImg, UT_sint32 xDest, UT_sint32 yDest);
    virtual void drawRGBImage(GR_Image* pImg, UT_sint32 xDest, UT_sint32 yDest);
    virtual void drawGrayImage(GR_Image* pImg, UT_sint32 xDest, UT_sint32 yDest);
    virtual void drawBWImage(GR_Image* pImg, UT_sint32 xDest, UT_sint32 yDest);
    virtual GR_Image* createNewImage(const char* pszName, const UT_ConstByteBufPtr & pBBPNG, const std::string& mimetype, UT_sint32 iDisplayWidth, UT_sint32 iDisplayHeight, GR_Image::GRType iType = GR_Image::GRT_Raster);

    virtual bool queryProperties(GR_Graphics::Properties gp) const;

    virtual bool startPrint(void);
    virtual bool startPage(const char * szPagelabel, UT_uint32 pageNumber,
                              bool bPortrait, UT_uint32 iWidth, UT_uint32 iHeight);
    virtual bool endPrint(void);

    virtual void setColorSpace(GR_Graphics::ColorSpace c);
    virtual GR_Graphics::ColorSpace getColorSpace(void) const;

    virtual void setCursor(GR_Graphics::Cursor c);
    virtual GR_Graphics::Cursor getCursor(void) const;

    virtual void                    setColor3D(GR_Color3D c);
    virtual bool getColor3D(GR_Color3D c, UT_RGBColor &color);
    virtual void fillRect(GR_Color3D c, UT_sint32 x, UT_sint32 y, UT_sint32 w, UT_sint32 h);
    virtual void fillRect(GR_Color3D c, UT_Rect &r);
    virtual void setPageSize(char* pageSizeName, UT_uint32 iwidth = 0, UT_uint32 iheight=0);
    virtual void setPageCount(UT_uint32 /*iCount*/) {}

    virtual GR_Image * genImageFromRectangle(const UT_Rect & /*r*/) { return NULL;}
    virtual void      saveRectangle(UT_Rect & /*r*/, UT_uint32 /*iIndx*/) {}
    virtual void      restoreRectangle(UT_uint32 /*iIndx*/) {}

    virtual void setLineProperties(double inWidth,
                     GR_Graphics::JoinStyle inJoinStyle = JOIN_MITER,
                     GR_Graphics::CapStyle inCapStyle   = CAP_BUTT,
                     GR_Graphics::LineStyle inLineStyle = LINE_SOLID);

protected:
    // all instances have to be created via GR_GraphicsFactory; see gr_Graphics.h
    CairoNull_Graphics();
};

#endif /* GR_CAIROPSGRAPHICS_H */