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