3 *******************************************************************************
5 * Copyright (C) 1999-2006, International Business Machines
6 * Corporation and others. All Rights Reserved.
8 *******************************************************************************
9 * file name: GnomeFontInstance.h
11 * created on: 08/30/2001
12 * created by: Eric R. Mader
15 #ifndef __GNOMEFONTINSTANCE_H
16 #define __GNOMEFONTINSTANCE_H
20 #include FT_FREETYPE_H
24 #include "layout/LETypes.h"
25 #include "layout/LEFontInstance.h"
27 #include "RenderingSurface.h"
28 #include "FontTableCache.h"
31 class GnomeSurface : public RenderingSurface
34 GnomeSurface(GtkWidget *theWidget);
35 virtual ~GnomeSurface();
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);
40 GtkWidget *getWidget() const;
41 void setWidget(GtkWidget *theWidget);
48 class GnomeFontInstance : public LEFontInstance, protected FontTableCache
54 cairo_font_face_t *fCairoFace;
67 virtual const void *readFontTable(LETag tableTag) const;
69 virtual LEErrorCode initMapper();
72 GnomeFontInstance(FT_Library engine, const char *fontPathName, le_int16 pointSize, LEErrorCode &status);
74 virtual ~GnomeFontInstance();
76 virtual const void *getFontTable(LETag tableTag) const;
78 virtual le_int32 getUnitsPerEM() const;
80 virtual le_int32 getAscent() const;
82 virtual le_int32 getDescent() const;
84 virtual le_int32 getLeading() const;
86 virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;
88 virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
90 virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
92 float getXPixelsPerEm() const;
94 float getYPixelsPerEm() const;
96 float getScaleFactorX() const;
98 float getScaleFactorY() const;
100 void rasterizeGlyphs(cairo_t *cairo, const LEGlyphID *glyphs, le_int32 glyphCount, const float *positions,
101 le_int32 x, le_int32 y) const;
104 inline GtkWidget *GnomeSurface::getWidget() const
109 inline void GnomeSurface::setWidget(GtkWidget *theWidget)
115 inline FT_Instance GnomeFontInstance::getFont() const
121 inline le_int32 GnomeFontInstance::getUnitsPerEM() const
126 inline le_int32 GnomeFontInstance::getAscent() const
131 inline le_int32 GnomeFontInstance::getDescent() const
136 inline le_int32 GnomeFontInstance::getLeading() const
141 inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const
143 return fMapper->unicodeToGlyph(ch);
146 inline float GnomeFontInstance::getXPixelsPerEm() const
148 return (float) fPointSize;
151 inline float GnomeFontInstance::getYPixelsPerEm() const
153 return (float) fPointSize;
156 inline float GnomeFontInstance::getScaleFactorX() const
158 return fDeviceScaleX;
161 inline float GnomeFontInstance::getScaleFactorY() const
163 return fDeviceScaleY;