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/*
*******************************************************************************
*
* Copyright (C) 1999-2003, International Business Machines
* Corporation and others. All Rights Reserved.
*
*******************************************************************************
* file name: GnomeFontInstance.h
*
* created on: 08/30/2001
* created by: Eric R. Mader
*/
#ifndef __GNOMEFONTINSTANCE_H
#define __GNOMEFONTINSTANCE_H
#include <gnome.h>
#include "freetype/freetype.h"
#include "layout/LETypes.h"
#include "layout/LEFontInstance.h"
#include "RenderingSurface.h"
#include "FontTableCache.h"
#include "cmaps.h"
class GnomeSurface : public RenderingSurface
{
public:
GnomeSurface(GtkWidget *theWidget);
virtual ~GnomeSurface();
virtual void drawGlyphs(const LEFontInstance *font, const LEGlyphID *glyphs, le_int32 count,
const float *positions, le_int32 x, le_int32 y, le_int32 width, le_int32 height);
GtkWidget *getWidget() const;
void setWidget(GtkWidget *theWidget);
private:
GtkWidget *fWidget;
};
class GnomeFontInstance : public LEFontInstance, protected FontTableCache
{
protected:
TT_Face fFace;
TT_Instance fInstance;
TT_Glyph fGlyph;
le_int32 fPointSize;
le_int32 fUnitsPerEM;
le_int32 fAscent;
le_int32 fDescent;
le_int32 fLeading;
float fDeviceScaleX;
float fDeviceScaleY;
CMAPMapper *fMapper;
virtual const void *readFontTable(LETag tableTag) const;
virtual LEErrorCode initMapper();
public:
GnomeFontInstance(TT_Engine engine, const TT_Text *fontPathName, le_int16 pointSize, LEErrorCode &status);
virtual ~GnomeFontInstance();
TT_Instance getFont() const;
virtual const void *getFontTable(LETag tableTag) const;
virtual le_int32 getUnitsPerEM() const;
virtual le_int32 getAscent() const;
virtual le_int32 getDescent() const;
virtual le_int32 getLeading() const;
virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;
virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
float getXPixelsPerEm() const;
float getYPixelsPerEm() const;
float getScaleFactorX() const;
float getScaleFactorY() const;
TT_Raster_Map *rasterizeGlyphs(const LEGlyphID *glyphs, le_int32 glyphCount, const le_int32 *dx, const le_int32 *dy,
le_int32 &xOffset, le_int32 &yOffset) const;
void freeRaster(TT_Raster_Map *raster);
};
inline GtkWidget *GnomeSurface::getWidget() const
{
return fWidget;
}
inline void GnomeSurface::setWidget(GtkWidget *theWidget)
{
fWidget = theWidget;
}
inline TT_Instance GnomeFontInstance::getFont() const
{
return fInstance;
}
inline le_int32 GnomeFontInstance::getUnitsPerEM() const
{
return fUnitsPerEM;
}
inline le_int32 GnomeFontInstance::getAscent() const
{
return fAscent;
}
inline le_int32 GnomeFontInstance::getDescent() const
{
return fDescent;
}
inline le_int32 GnomeFontInstance::getLeading() const
{
return fLeading;
}
inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const
{
return fMapper->unicodeToGlyph(ch);
}
inline float GnomeFontInstance::getXPixelsPerEm() const
{
return (float) fPointSize;
}
inline float GnomeFontInstance::getYPixelsPerEm() const
{
return (float) fPointSize;
}
inline float GnomeFontInstance::getScaleFactorX() const
{
return fDeviceScaleX;
}
inline float GnomeFontInstance::getScaleFactorY() const
{
return fDeviceScaleY;
}
#endif
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