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39 
40 #ifndef QSGOPENVGFONTGLYPHCACHE_H
41 #define QSGOPENVGFONTGLYPHCACHE_H
42 
43 #include <QtGui/QGlyphRun>
44 #include <QtCore/QSet>
45 #include <VG/openvg.h>
46 
47 QT_BEGIN_NAMESPACE
48 
49 class QSGOpenVGFontGlyphCache;
50 
51 class QSGOpenVGFontGlyphCacheManager
52 {
53 public:
54     QSGOpenVGFontGlyphCacheManager();
55     ~QSGOpenVGFontGlyphCacheManager();
56 
57     QSGOpenVGFontGlyphCache *cache(const QRawFont &font);
58     void insertCache(const QRawFont &font, QSGOpenVGFontGlyphCache *cache);
59 
60 private:
61     QHash<QRawFont, QSGOpenVGFontGlyphCache *> m_caches;
62 };
63 
64 class QSGOpenVGFontGlyphCache
65 {
66 public:
67     QSGOpenVGFontGlyphCache(QSGOpenVGFontGlyphCacheManager *manager, const QRawFont &font);
68     ~QSGOpenVGFontGlyphCache();
69 
manager()70     const QSGOpenVGFontGlyphCacheManager *manager() const { return m_manager; }
referenceFont()71     const QRawFont &referenceFont() const { return m_referenceFont; }
glyphCount()72     int glyphCount() const { return m_glyphCount; }
73 
74     void populate(const QVector<quint32> &glyphs);
75     void release(const QVector<quint32> &glyphs);
76 
font()77     VGFont font() { return m_font; }
78 
79 private:
80     void requestGlyphs(const QSet<quint32> &glyphs);
81     void referenceGlyphs(const QSet<quint32> &glyphs);
82     void releaseGlyphs(const QSet<quint32> &glyphs);
83 
84     QSGOpenVGFontGlyphCacheManager *m_manager;
85     QRawFont m_referenceFont;
86     int m_glyphCount;
87 
88     VGFont m_font;
89     QHash<quint32, int> m_glyphReferences;
90 };
91 
92 
93 QT_END_NAMESPACE
94 
95 #endif // QSGOPENVGFONTGLYPHCACHE_H
96