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Diffstat (limited to 'src/quick/scenegraph/qsgshareddistancefieldglyphcache_p.h')
-rw-r--r-- | src/quick/scenegraph/qsgshareddistancefieldglyphcache_p.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/quick/scenegraph/qsgshareddistancefieldglyphcache_p.h b/src/quick/scenegraph/qsgshareddistancefieldglyphcache_p.h new file mode 100644 index 0000000000..6f5696eabb --- /dev/null +++ b/src/quick/scenegraph/qsgshareddistancefieldglyphcache_p.h @@ -0,0 +1,113 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSGSHAREDDISTANCEFIELDGLYPHCACHE_H +#define QSGSHAREDDISTANCEFIELDGLYPHCACHE_H + +#include <QtCore/qwaitcondition.h> +#include <private/qsgadaptationlayer_p.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QPlatformSharedGraphicsCache; +class QSGSharedDistanceFieldGlyphCache : public QObject, public QSGDistanceFieldGlyphCache +{ + Q_OBJECT +public: + explicit QSGSharedDistanceFieldGlyphCache(const QByteArray &cacheId, + QPlatformSharedGraphicsCache *sharedGraphicsCache, + QSGDistanceFieldGlyphCacheManager *man, + QOpenGLContext *c, + const QRawFont &font); + ~QSGSharedDistanceFieldGlyphCache(); + + void registerOwnerElement(QQuickItem *ownerElement); + void unregisterOwnerElement(QQuickItem *ownerElement); + void processPendingGlyphs(); + + void requestGlyphs(const QSet<glyph_t> &glyphs); + void referenceGlyphs(const QSet<glyph_t> &glyphs); + void storeGlyphs(const QHash<glyph_t, QImage> &glyphs); + void releaseGlyphs(const QSet<glyph_t> &glyphs); + +Q_SIGNALS: + void glyphsPending(); + +private Q_SLOTS: + void reportItemsMissing(const QByteArray &cacheId, const QVector<quint32> &itemIds); + void reportItemsAvailable(const QByteArray &cacheId, + void *bufferId, const QSize &bufferSize, + const QVector<quint32> &itemIds, const QVector<QPoint> &positions); + void reportItemsInvalidated(const QByteArray &cacheId, const QVector<quint32> &itemIds); + +private: + void waitForGlyphs(); + void saveTexture(GLuint textureId, int width, int height); + + QSet<quint32> m_requestedGlyphsThatHaveNotBeenReturned; + QWaitCondition m_pendingGlyphsCondition; + QByteArray m_cacheId; + QPlatformSharedGraphicsCache *m_sharedGraphicsCache; + QMutex m_pendingGlyphsMutex; + + QSet<glyph_t> m_pendingInvalidatedGlyphs; + QSet<glyph_t> m_pendingMissingGlyphs; + + struct PendingGlyph + { + PendingGlyph() : buffer(0) {} + + void *buffer; + QSize bufferSize; + QPoint position; + }; + + QHash<quint32, PendingGlyph> m_pendingReadyGlyphs; + QHash<glyph_t, void *> m_bufferForGlyph; +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QSGSHAREDDISTANCEFIELDGLYPHCACHE_H |