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// Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H
#define QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtCore/QRectF>
#include <Qt3DCore/qnode.h>
#include <Qt3DExtras/qt3dextras_global.h>
#include <private/qglobal_p.h>
QT_BEGIN_NAMESPACE
class QRawFont;
class QGlyphRun;
namespace Qt3DCore {
class QNode;
}
namespace Qt3DRender {
class QAbstractTexture;
}
namespace Qt3DExtras {
class DistanceFieldFont;
class QDistanceFieldGlyphCachePrivate;
class QDistanceFieldGlyphCache
{
public:
QDistanceFieldGlyphCache();
~QDistanceFieldGlyphCache();
void setRootNode(Qt3DCore::QNode *rootNode);
Qt3DCore::QNode *rootNode() const;
struct Glyph {
Qt3DRender::QAbstractTexture *texture = nullptr;
QRectF glyphPathBoundingRect; // bounding rect of the QPainterPath used to draw the glyph
QRectF texCoords; // texture coordinates within texture
};
bool doubleGlyphResolution(const QRawFont &font);
QList<Glyph> refGlyphs(const QGlyphRun &run);
Glyph refGlyph(const QRawFont &font, quint32 glyph);
void derefGlyphs(const QGlyphRun &run);
void derefGlyph(const QRawFont &font, quint32 glyph);
private:
DistanceFieldFont* getOrCreateDistanceFieldFont(const QRawFont &font);
static QString fontKey(const QRawFont &font);
QHash<QString, DistanceFieldFont*> m_fonts;
Qt3DCore::QNode *m_rootNode;
};
} // namespace Qt3DExtras
QT_END_NAMESPACE
#endif // QT3DEXTRAS_QDISTANCEFIELDGLYPHCACHE_P_H
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