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39
40#ifndef QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H
41#define QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists for the convenience
48// of other Qt classes. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <QtCore/QRectF>
55#include <Qt3DCore/qnode.h>
56#include <Qt3DExtras/qt3dextras_global.h>
57
58QT_BEGIN_NAMESPACE
59
60class QRawFont;
61class QGlyphRun;
62
63namespace Qt3DCore {
64class QNode;
65}
66
67namespace Qt3DRender {
68class QAbstractTexture;
69}
70
71namespace Qt3DExtras {
72
73class DistanceFieldFont;
74class QDistanceFieldGlyphCachePrivate;
75
76class QDistanceFieldGlyphCache
77{
78public:
79 QDistanceFieldGlyphCache();
80 ~QDistanceFieldGlyphCache();
81
82 void setRootNode(Qt3DCore::QNode *rootNode);
83 Qt3DCore::QNode *rootNode() const;
84
85 struct Glyph {
86 Qt3DRender::QAbstractTexture *texture = nullptr;
87 QRectF glyphPathBoundingRect; // bounding rect of the QPainterPath used to draw the glyph
88 QRectF texCoords; // texture coordinates within texture
89 };
90
91 bool doubleGlyphResolution(const QRawFont &font);
92
93 QVector<Glyph> refGlyphs(const QGlyphRun &run);
94 Glyph refGlyph(const QRawFont &font, quint32 glyph);
95
96 void derefGlyphs(const QGlyphRun &run);
97 void derefGlyph(const QRawFont &font, quint32 glyph);
98
99private:
100 DistanceFieldFont* getOrCreateDistanceFieldFont(const QRawFont &font);
101 static QString fontKey(const QRawFont &font);
102
103 QHash<QString, DistanceFieldFont*> m_fonts;
104 Qt3DCore::QNode *m_rootNode;
105};
106
107} // namespace Qt3DExtras
108
109QT_END_NAMESPACE
110
111#endif // QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H
112

source code of qt3d/src/extras/text/qdistancefieldglyphcache_p.h