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42 #ifndef QSGDISTANCEFIELDUTIL_H
43 #define QSGDISTANCEFIELDUTIL_H
46 #include <private/qfontengine_p.h>
47 #include <private/qsgadaptationlayer_p.h>
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
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)
71 typedef float (*ThresholdFunc)(float glyphScale);
72 typedef float (*AntialiasingSpreadFunc)(float glyphScale);
74 bool qt_fontHasNarrowOutlines(const QRawFont &f);
75 QImage qt_renderDistanceFieldGlyph(const QRawFont &font, glyph_t glyph, bool doubleResolution);
78 class QOpenGLShaderProgram;
79 class QSGDistanceFieldGlyphCache;
82 class Q_QUICK_EXPORT QSGDistanceFieldGlyphCacheManager
85 QSGDistanceFieldGlyphCacheManager(QSGContext *c);
86 ~QSGDistanceFieldGlyphCacheManager();
88 QSGDistanceFieldGlyphCache *cache(const QRawFont &font);
90 QSGGlyphNode::AntialiasingMode defaultAntialiasingMode() const { return m_defaultAntialiasingMode; }
91 void setDefaultAntialiasingMode(QSGGlyphNode::AntialiasingMode mode) { m_defaultAntialiasingMode = mode; }
93 ThresholdFunc thresholdFunc() const { return m_threshold_func; }
94 void setThresholdFunc(ThresholdFunc func) { m_threshold_func = func; }
96 AntialiasingSpreadFunc antialiasingSpreadFunc() const { return m_antialiasingSpread_func; }
97 void setAntialiasingSpreadFunc(AntialiasingSpreadFunc func) { m_antialiasingSpread_func = func; }
100 QHash<QFontEngine *, QSGDistanceFieldGlyphCache *> m_caches;
104 QSGGlyphNode::AntialiasingMode m_defaultAntialiasingMode;
105 ThresholdFunc m_threshold_func;
106 AntialiasingSpreadFunc m_antialiasingSpread_func;
111 #endif // QSGDISTANCEFIELDUTIL_H