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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui 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.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifndef QOPENGLTEXTURECACHE_P_H
+#define QOPENGLTEXTURECACHE_P_H
+
+#include <QHash>
+#include <QObject>
+#include <QtGui/QtGui>
+#include <private/qopenglcontext_p.h>
+#include <QtCore/qmutex.h>
+
+QT_BEGIN_NAMESPACE
+
+class QOpenGLCachedTexture
+{
+public:
+ QOpenGLCachedTexture(GLuint id, QOpenGLContext *context);
+ ~QOpenGLCachedTexture() { m_resource->free(); }
+
+ GLuint id() const { return m_resource->id(); }
+
+private:
+ QOpenGLSharedResourceGuard *m_resource;
+};
+
+class QOpenGLTextureCache : public QOpenGLSharedResource
+{
+public:
+ static QOpenGLTextureCache *cacheForContext(QOpenGLContext *context);
+
+ QOpenGLTextureCache(QOpenGLContext *);
+ ~QOpenGLTextureCache();
+
+ GLuint bindTexture(QOpenGLContext *context, const QPixmap &pixmap);
+ GLuint bindTexture(QOpenGLContext *context, const QImage &image);
+
+ void invalidate(qint64 key);
+
+ void invalidateResource();
+ void freeResource(QOpenGLContext *ctx);
+
+private:
+ GLuint bindTexture(QOpenGLContext *context, qint64 key, const QImage &image);
+
+ QMutex m_mutex;
+ QCache<quint64, QOpenGLCachedTexture> m_cache;
+};
+
+QT_END_NAMESPACE
+
+#endif
+