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
getWidget()104 inline GtkWidget *GnomeSurface::getWidget() const
105 {
106 return fWidget;
107 }
108
setWidget(GtkWidget * theWidget)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
getUnitsPerEM()121 inline le_int32 GnomeFontInstance::getUnitsPerEM() const
122 {
123 return fUnitsPerEM;
124 }
125
getAscent()126 inline le_int32 GnomeFontInstance::getAscent() const
127 {
128 return fAscent;
129 }
130
getDescent()131 inline le_int32 GnomeFontInstance::getDescent() const
132 {
133 return fDescent;
134 }
135
getLeading()136 inline le_int32 GnomeFontInstance::getLeading() const
137 {
138 return fLeading;
139 }
140
mapCharToGlyph(LEUnicode32 ch)141 inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const
142 {
143 return fMapper->unicodeToGlyph(ch);
144 }
145
getXPixelsPerEm()146 inline float GnomeFontInstance::getXPixelsPerEm() const
147 {
148 return (float) fPointSize;
149 }
150
getYPixelsPerEm()151 inline float GnomeFontInstance::getYPixelsPerEm() const
152 {
153 return (float) fPointSize;
154 }
155
getScaleFactorX()156 inline float GnomeFontInstance::getScaleFactorX() const
157 {
158 return fDeviceScaleX;
159 }
160
getScaleFactorY()161 inline float GnomeFontInstance::getScaleFactorY() const
162 {
163 return fDeviceScaleY;
164 }
165
166 #endif
167