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/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#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>
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);
QVector<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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