Remove "All rights reserved" line from license headers.
[profile/ivi/qtdeclarative.git] / src / quick / scenegraph / util / qsgdistancefieldutil_p.h
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41
42 #ifndef QSGDISTANCEFIELDUTIL_H
43 #define QSGDISTANCEFIELDUTIL_H
44
45 #include <qrawfont.h>
46 #include <private/qfontengine_p.h>
47 #include <private/qsgadaptationlayer_p.h>
48
49 QT_BEGIN_NAMESPACE
50
51 #define QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE 54
52 #define QT_DISTANCEFIELD_DEFAULT_TILESIZE 64
53 #define QT_DISTANCEFIELD_DEFAULT_SCALE 16
54 #define QT_DISTANCEFIELD_DEFAULT_RADIUS 80
55 #define QT_DISTANCEFIELD_HIGHGLYPHCOUNT 2000
56
57 #define QT_DISTANCEFIELD_BASEFONTSIZE(NarrowOutlineFont) \
58     (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE * 2 : \
59                          QT_DISTANCEFIELD_DEFAULT_BASEFONTSIZE)
60 #define QT_DISTANCEFIELD_TILESIZE(NarrowOutlineFont) \
61     (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_TILESIZE * 2 : \
62                          QT_DISTANCEFIELD_DEFAULT_TILESIZE)
63 #define QT_DISTANCEFIELD_SCALE(NarrowOutlineFont) \
64     (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_SCALE / 2 : \
65                          QT_DISTANCEFIELD_DEFAULT_SCALE)
66 #define QT_DISTANCEFIELD_RADIUS(NarrowOutlineFont) \
67     (NarrowOutlineFont ? QT_DISTANCEFIELD_DEFAULT_RADIUS / 2 : \
68                          QT_DISTANCEFIELD_DEFAULT_RADIUS)
69
70
71 typedef float (*ThresholdFunc)(float glyphScale);
72 typedef float (*AntialiasingSpreadFunc)(float glyphScale);
73
74 bool qt_fontHasNarrowOutlines(const QRawFont &f);
75 QImage qt_renderDistanceFieldGlyph(const QRawFont &font, glyph_t glyph, bool doubleResolution);
76
77
78 class QOpenGLShaderProgram;
79 class QSGDistanceFieldGlyphCache;
80 class QSGContext;
81
82 class Q_QUICK_EXPORT QSGDistanceFieldGlyphCacheManager
83 {
84 public:
85     QSGDistanceFieldGlyphCacheManager(QSGContext *c);
86     ~QSGDistanceFieldGlyphCacheManager();
87
88     QSGDistanceFieldGlyphCache *cache(const QRawFont &font);
89
90     QSGGlyphNode::AntialiasingMode defaultAntialiasingMode() const { return m_defaultAntialiasingMode; }
91     void setDefaultAntialiasingMode(QSGGlyphNode::AntialiasingMode mode) { m_defaultAntialiasingMode = mode; }
92
93     ThresholdFunc thresholdFunc() const { return m_threshold_func; }
94     void setThresholdFunc(ThresholdFunc func) { m_threshold_func = func; }
95
96     AntialiasingSpreadFunc antialiasingSpreadFunc() const { return m_antialiasingSpread_func; }
97     void setAntialiasingSpreadFunc(AntialiasingSpreadFunc func) { m_antialiasingSpread_func = func; }
98
99 private:
100     QHash<QFontEngine *, QSGDistanceFieldGlyphCache *> m_caches;
101
102     QSGContext *sgCtx;
103
104     QSGGlyphNode::AntialiasingMode m_defaultAntialiasingMode;
105     ThresholdFunc m_threshold_func;
106     AntialiasingSpreadFunc m_antialiasingSpread_func;
107 };
108
109 QT_END_NAMESPACE
110
111 #endif // QSGDISTANCEFIELDUTIL_H