1 2 /* 3 ******************************************************************************* 4 * 5 * Copyright (C) 1999-2006, International Business Machines 6 * Corporation and others. All Rights Reserved. 7 * 8 ******************************************************************************* 9 * file name: GnomeFontInstance.h 10 * 11 * created on: 08/30/2001 12 * created by: Eric R. Mader 13 */ 14 15 #ifndef __GNOMEFONTINSTANCE_H 16 #define __GNOMEFONTINSTANCE_H 17 18 #include <gnome.h> 19 #include <ft2build.h> 20 #include FT_FREETYPE_H 21 #include FT_GLYPH_H 22 #include <cairo.h> 23 24 #include "layout/LETypes.h" 25 #include "layout/LEFontInstance.h" 26 27 #include "RenderingSurface.h" 28 #include "FontTableCache.h" 29 #include "cmaps.h" 30 31 class GnomeSurface : public RenderingSurface 32 { 33 public: 34 GnomeSurface(GtkWidget *theWidget); 35 virtual ~GnomeSurface(); 36 37 virtual void drawGlyphs(const LEFontInstance *font, const LEGlyphID *glyphs, le_int32 count, 38 const float *positions, le_int32 x, le_int32 y, le_int32 width, le_int32 height); 39 40 GtkWidget *getWidget() const; 41 void setWidget(GtkWidget *theWidget); 42 43 private: 44 GtkWidget *fWidget; 45 cairo_t *fCairo; 46 }; 47 48 class GnomeFontInstance : public LEFontInstance, protected FontTableCache 49 { 50 protected: 51 FT_Face fFace; 52 // FT_Glyph fGlyph; 53 54 cairo_font_face_t *fCairoFace; 55 56 le_int32 fPointSize; 57 le_int32 fUnitsPerEM; 58 le_int32 fAscent; 59 le_int32 fDescent; 60 le_int32 fLeading; 61 62 float fDeviceScaleX; 63 float fDeviceScaleY; 64 65 CMAPMapper *fMapper; 66 67 virtual const void *readFontTable(LETag tableTag) const; 68 69 virtual LEErrorCode initMapper(); 70 71 public: 72 GnomeFontInstance(FT_Library engine, const char *fontPathName, le_int16 pointSize, LEErrorCode &status); 73 74 virtual ~GnomeFontInstance(); 75 76 virtual const void *getFontTable(LETag tableTag) const; 77 78 virtual le_int32 getUnitsPerEM() const; 79 80 virtual le_int32 getAscent() const; 81 82 virtual le_int32 getDescent() const; 83 84 virtual le_int32 getLeading() const; 85 86 virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const; 87 88 virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const; 89 90 virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const; 91 92 float getXPixelsPerEm() const; 93 94 float getYPixelsPerEm() const; 95 96 float getScaleFactorX() const; 97 98 float getScaleFactorY() const; 99 100 void rasterizeGlyphs(cairo_t *cairo, const LEGlyphID *glyphs, le_int32 glyphCount, const float *positions, 101 le_int32 x, le_int32 y) const; 102 }; 103 104 inline GtkWidget *GnomeSurface::getWidget() const 105 { 106 return fWidget; 107 } 108 109 inline void GnomeSurface::setWidget(GtkWidget *theWidget) 110 { 111 fWidget = theWidget; 112 } 113 114 /* 115 inline FT_Instance GnomeFontInstance::getFont() const 116 { 117 return fInstance; 118 } 119 */ 120 121 inline le_int32 GnomeFontInstance::getUnitsPerEM() const 122 { 123 return fUnitsPerEM; 124 } 125 126 inline le_int32 GnomeFontInstance::getAscent() const 127 { 128 return fAscent; 129 } 130 131 inline le_int32 GnomeFontInstance::getDescent() const 132 { 133 return fDescent; 134 } 135 136 inline le_int32 GnomeFontInstance::getLeading() const 137 { 138 return fLeading; 139 } 140 141 inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const 142 { 143 return fMapper->unicodeToGlyph(ch); 144 } 145 146 inline float GnomeFontInstance::getXPixelsPerEm() const 147 { 148 return (float) fPointSize; 149 } 150 151 inline float GnomeFontInstance::getYPixelsPerEm() const 152 { 153 return (float) fPointSize; 154 } 155 156 inline float GnomeFontInstance::getScaleFactorX() const 157 { 158 return fDeviceScaleX; 159 } 160 161 inline float GnomeFontInstance::getScaleFactorY() const 162 { 163 return fDeviceScaleY; 164 } 165 166 #endif 167
