1 2 /* 3 ******************************************************************************* 4 * 5 * 2016 and later: Unicode, Inc. and others. 6 * License & terms of use: http://www.unicode.org/copyright.html#License 7 * 8 ******************************************************************************* 9 ******************************************************************************* 10 * 11 * Copyright (C) 1999-2006, International Business Machines 12 * Corporation and others. All Rights Reserved. 13 * 14 ******************************************************************************* 15 * file name: GnomeFontInstance.h 16 * 17 * created on: 08/30/2001 18 * created by: Eric R. Mader 19 */ 20 21 #ifndef __GNOMEFONTINSTANCE_H 22 #define __GNOMEFONTINSTANCE_H 23 24 #include <gnome.h> 25 #include <ft2build.h> 26 #include FT_FREETYPE_H 27 #include FT_GLYPH_H 28 #include <cairo.h> 29 30 #include "layout/LETypes.h" 31 #include "layout/LEFontInstance.h" 32 33 #include "RenderingSurface.h" 34 #include "FontTableCache.h" 35 #include "cmaps.h" 36 37 class GnomeSurface : public RenderingSurface 38 { 39 public: 40 GnomeSurface(GtkWidget *theWidget); 41 virtual ~GnomeSurface(); 42 43 virtual void drawGlyphs(const LEFontInstance *font, const LEGlyphID *glyphs, le_int32 count, 44 const float *positions, le_int32 x, le_int32 y, le_int32 width, le_int32 height); 45 46 GtkWidget *getWidget() const; 47 void setWidget(GtkWidget *theWidget); 48 49 private: 50 GtkWidget *fWidget; 51 cairo_t *fCairo; 52 }; 53 54 class GnomeFontInstance : public LEFontInstance, protected FontTableCache 55 { 56 protected: 57 FT_Face fFace; 58 // FT_Glyph fGlyph; 59 60 cairo_font_face_t *fCairoFace; 61 62 le_int32 fPointSize; 63 le_int32 fUnitsPerEM; 64 le_int32 fAscent; 65 le_int32 fDescent; 66 le_int32 fLeading; 67 68 float fDeviceScaleX; 69 float fDeviceScaleY; 70 71 CMAPMapper *fMapper; 72 73 virtual const void *readFontTable(LETag tableTag) const; 74 75 virtual LEErrorCode initMapper(); 76 77 public: 78 GnomeFontInstance(FT_Library engine, const char *fontPathName, le_int16 pointSize, LEErrorCode &status); 79 80 virtual ~GnomeFontInstance(); 81 82 virtual const void *getFontTable(LETag tableTag) const; 83 84 virtual le_int32 getUnitsPerEM() const; 85 86 virtual le_int32 getAscent() const; 87 88 virtual le_int32 getDescent() const; 89 90 virtual le_int32 getLeading() const; 91 92 virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const; 93 94 virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const; 95 96 virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const; 97 98 float getXPixelsPerEm() const; 99 100 float getYPixelsPerEm() const; 101 102 float getScaleFactorX() const; 103 104 float getScaleFactorY() const; 105 106 void rasterizeGlyphs(cairo_t *cairo, const LEGlyphID *glyphs, le_int32 glyphCount, const float *positions, 107 le_int32 x, le_int32 y) const; 108 }; 109 110 inline GtkWidget *GnomeSurface::getWidget() const 111 { 112 return fWidget; 113 } 114 115 inline void GnomeSurface::setWidget(GtkWidget *theWidget) 116 { 117 fWidget = theWidget; 118 } 119 120 /* 121 inline FT_Instance GnomeFontInstance::getFont() const 122 { 123 return fInstance; 124 } 125 */ 126 127 inline le_int32 GnomeFontInstance::getUnitsPerEM() const 128 { 129 return fUnitsPerEM; 130 } 131 132 inline le_int32 GnomeFontInstance::getAscent() const 133 { 134 return fAscent; 135 } 136 137 inline le_int32 GnomeFontInstance::getDescent() const 138 { 139 return fDescent; 140 } 141 142 inline le_int32 GnomeFontInstance::getLeading() const 143 { 144 return fLeading; 145 } 146 147 inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const 148 { 149 return fMapper->unicodeToGlyph(ch); 150 } 151 152 inline float GnomeFontInstance::getXPixelsPerEm() const 153 { 154 return (float) fPointSize; 155 } 156 157 inline float GnomeFontInstance::getYPixelsPerEm() const 158 { 159 return (float) fPointSize; 160 } 161 162 inline float GnomeFontInstance::getScaleFactorX() const 163 { 164 return fDeviceScaleX; 165 } 166 167 inline float GnomeFontInstance::getScaleFactorY() const 168 { 169 return fDeviceScaleY; 170 } 171 172 #endif 173
