summaryrefslogtreecommitdiff
path: root/Build/source/libs/icu/icu-src/source/samples/layout/GnomeFontInstance.h
blob: f088b6418ef9bf390e0a8d45610d3f3cb731be2e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172

/*
 *******************************************************************************
 *
 *   Copyright (C) 2016 and later: Unicode, Inc. and others.
 *   License & terms of use: http://www.unicode.org/copyright.html#License
 *
 *******************************************************************************
 *******************************************************************************
 *
 *   Copyright (C) 1999-2006, International Business Machines
 *   Corporation and others.  All Rights Reserved.
 *
 *******************************************************************************
 *   file name:  GnomeFontInstance.h
 *
 *   created on: 08/30/2001
 *   created by: Eric R. Mader
 */

#ifndef __GNOMEFONTINSTANCE_H
#define __GNOMEFONTINSTANCE_H

#include <gnome.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include FT_GLYPH_H
#include <cairo.h>

#include "layout/LETypes.h"
#include "layout/LEFontInstance.h"

#include "RenderingSurface.h"
#include "FontTableCache.h"
#include "cmaps.h"

class GnomeSurface : public RenderingSurface
{
public:
    GnomeSurface(GtkWidget *theWidget);
    virtual ~GnomeSurface();

    virtual void drawGlyphs(const LEFontInstance *font, const LEGlyphID *glyphs, le_int32 count,
        const float *positions, le_int32 x, le_int32 y, le_int32 width, le_int32 height);

    GtkWidget *getWidget() const;
    void setWidget(GtkWidget *theWidget);

private:
    GtkWidget *fWidget;
    cairo_t   *fCairo;
};

class GnomeFontInstance : public LEFontInstance, protected FontTableCache
{
 protected:
    FT_Face fFace;
//  FT_Glyph fGlyph;
    
    cairo_font_face_t *fCairoFace;

    le_int32 fPointSize;
    le_int32 fUnitsPerEM;
    le_int32 fAscent;
    le_int32 fDescent;
    le_int32 fLeading;

    float fDeviceScaleX;
    float fDeviceScaleY;

    CMAPMapper *fMapper;

    virtual const void *readFontTable(LETag tableTag) const;

    virtual LEErrorCode initMapper();

 public:
    GnomeFontInstance(FT_Library engine, const char *fontPathName, le_int16 pointSize, LEErrorCode &status);

    virtual ~GnomeFontInstance();

    virtual const void *getFontTable(LETag tableTag) const;

    virtual le_int32 getUnitsPerEM() const;

    virtual le_int32 getAscent() const;

    virtual le_int32 getDescent() const;

    virtual le_int32 getLeading() const;

    virtual LEGlyphID mapCharToGlyph(LEUnicode32 ch) const;

    virtual void getGlyphAdvance(LEGlyphID glyph, LEPoint &advance) const;

    virtual le_bool getGlyphPoint(LEGlyphID glyph, le_int32 pointNumber, LEPoint &point) const;

    float getXPixelsPerEm() const;

    float getYPixelsPerEm() const;

    float getScaleFactorX() const;

    float getScaleFactorY() const;

    void rasterizeGlyphs(cairo_t *cairo, const LEGlyphID *glyphs, le_int32 glyphCount, const float *positions,
				   le_int32 x, le_int32 y) const;
};

inline GtkWidget *GnomeSurface::getWidget() const
{
    return fWidget;
}

inline void GnomeSurface::setWidget(GtkWidget *theWidget)
{
    fWidget = theWidget;
}

/*
inline FT_Instance GnomeFontInstance::getFont() const
{
    return fInstance;
}
*/

inline le_int32 GnomeFontInstance::getUnitsPerEM() const
{
    return fUnitsPerEM;
}

inline le_int32 GnomeFontInstance::getAscent() const
{
    return fAscent;
}

inline le_int32 GnomeFontInstance::getDescent() const
{
    return fDescent;
}

inline le_int32 GnomeFontInstance::getLeading() const
{
    return fLeading;
}

inline LEGlyphID GnomeFontInstance::mapCharToGlyph(LEUnicode32 ch) const
{
    return fMapper->unicodeToGlyph(ch);
}

inline float GnomeFontInstance::getXPixelsPerEm() const
{
    return (float) fPointSize;
}

inline float GnomeFontInstance::getYPixelsPerEm() const
{
    return  (float) fPointSize;
}

inline float GnomeFontInstance::getScaleFactorX() const
{
    return fDeviceScaleX;
}

inline float GnomeFontInstance::getScaleFactorY() const
{
    return fDeviceScaleY;
}

#endif