| 1 | // Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB). |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
| 3 | |
| 4 | #ifndef QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H |
| 5 | #define QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H |
| 6 | |
| 7 | // |
| 8 | // W A R N I N G |
| 9 | // ------------- |
| 10 | // |
| 11 | // This file is not part of the Qt API. It exists for the convenience |
| 12 | // of other Qt classes. This header file may change from version to |
| 13 | // version without notice, or even be removed. |
| 14 | // |
| 15 | // We mean it. |
| 16 | // |
| 17 | |
| 18 | #include <QtCore/QRectF> |
| 19 | #include <Qt3DCore/qnode.h> |
| 20 | #include <Qt3DExtras/qt3dextras_global.h> |
| 21 | #include <private/qglobal_p.h> |
| 22 | |
| 23 | QT_BEGIN_NAMESPACE |
| 24 | |
| 25 | class QRawFont; |
| 26 | class QGlyphRun; |
| 27 | |
| 28 | namespace Qt3DCore { |
| 29 | class QNode; |
| 30 | } |
| 31 | |
| 32 | namespace Qt3DRender { |
| 33 | class QAbstractTexture; |
| 34 | } |
| 35 | |
| 36 | namespace Qt3DExtras { |
| 37 | |
| 38 | class DistanceFieldFont; |
| 39 | class QDistanceFieldGlyphCachePrivate; |
| 40 | |
| 41 | class QDistanceFieldGlyphCache |
| 42 | { |
| 43 | public: |
| 44 | QDistanceFieldGlyphCache(); |
| 45 | ~QDistanceFieldGlyphCache(); |
| 46 | |
| 47 | void setRootNode(Qt3DCore::QNode *rootNode); |
| 48 | Qt3DCore::QNode *rootNode() const; |
| 49 | |
| 50 | struct Glyph { |
| 51 | Qt3DRender::QAbstractTexture *texture = nullptr; |
| 52 | QRectF glyphPathBoundingRect; // bounding rect of the QPainterPath used to draw the glyph |
| 53 | QRectF texCoords; // texture coordinates within texture |
| 54 | }; |
| 55 | |
| 56 | bool doubleGlyphResolution(const QRawFont &font); |
| 57 | |
| 58 | QList<Glyph> refGlyphs(const QGlyphRun &run); |
| 59 | Glyph refGlyph(const QRawFont &font, quint32 glyph); |
| 60 | |
| 61 | void derefGlyphs(const QGlyphRun &run); |
| 62 | void derefGlyph(const QRawFont &font, quint32 glyph); |
| 63 | |
| 64 | private: |
| 65 | DistanceFieldFont* getOrCreateDistanceFieldFont(const QRawFont &font); |
| 66 | static QString fontKey(const QRawFont &font); |
| 67 | |
| 68 | QHash<QString, DistanceFieldFont*> m_fonts; |
| 69 | Qt3DCore::QNode *m_rootNode; |
| 70 | }; |
| 71 | |
| 72 | } // namespace Qt3DExtras |
| 73 | |
| 74 | QT_END_NAMESPACE |
| 75 | |
| 76 | #endif // QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H |
| 77 |