3 *******************************************************************************
5 * Copyright (C) 2016 and later: Unicode, Inc. and others.
6 * License & terms of use: http://www.unicode.org/copyright.html#License
8 *******************************************************************************
9 *******************************************************************************
11 * Copyright (C) 1999-2006, International Business Machines
12 * Corporation and others. All Rights Reserved.
14 *******************************************************************************
15 * file name: GnomeFontInstance.h
17 * created on: 08/30/2001
18 * created by: Eric R. Mader
21 #ifndef __GNOMEFONTINSTANCE_H
22 #define __GNOMEFONTINSTANCE_H
26 #include FT_FREETYPE_H
30 #include "layout/LETypes.h"
31 #include "layout/LEFontInstance.h"
33 #include "RenderingSurface.h"
34 #include "FontTableCache.h"
37 class GnomeSurface : public RenderingSurface
40 GnomeSurface(GtkWidget *theWidget);
41 virtual ~GnomeSurface();
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);
46 GtkWidget *getWidget() const;
47 void setWidget(GtkWidget *theWidget);
54 class GnomeFontInstance : public LEFontInstance, protected FontTableCache
60 cairo_font_face_t *fCairoFace;
73 virtual const void *readFontTable(LETag tableTag) const;
75 virtual LEErrorCode initMapper();
78 GnomeFontInstance(FT_Library engine, const char *fontPathName, le_int16 pointSize, LEErrorCode &status);
80 virtual ~GnomeFontInstance();
82 virtual const void *getFontTable(LETag tableTag) const;
84 virtual le_int32 getUnitsPerEM() const;
86 virtual le_int32 getAscent() const;
88 virtual le_int32 getDescent() const;
90 virtual le_int32 getLeading() const;
92 virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;
94 virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;
96 virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;
98 float getXPixelsPerEm() const;
100 float getYPixelsPerEm() const;
102 float getScaleFactorX() const;
104 float getScaleFactorY() const;
106 void rasterizeGlyphs(cairo_t *cairo, const LEGlyphID *glyphs, le_int32 glyphCount, const float *positions,
107 le_int32 x, le_int32 y) const;
110 inline GtkWidget *GnomeSurface::getWidget() const
115 inline void GnomeSurface::setWidget(GtkWidget *theWidget)
121 inline FT_Instance GnomeFontInstance::getFont() const
127 inline le_int32 GnomeFontInstance::getUnitsPerEM() const
132 inline le_int32 GnomeFontInstance::getAscent() const
137 inline le_int32 GnomeFontInstance::getDescent() const
142 inline le_int32 GnomeFontInstance::getLeading() const
147 inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const
149 return fMapper->unicodeToGlyph(ch);
152 inline float GnomeFontInstance::getXPixelsPerEm() const
154 return (float) fPointSize;
157 inline float GnomeFontInstance::getYPixelsPerEm() const
159 return (float) fPointSize;
162 inline float GnomeFontInstance::getScaleFactorX() const
164 return fDeviceScaleX;
167 inline float GnomeFontInstance::getScaleFactorY() const
169 return fDeviceScaleY;