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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtOpenGL module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QTEXTUREGLYPHCACHE_GL_P_H
+#define QTEXTUREGLYPHCACHE_GL_P_H
+
+//
+// W A R N I N G
+// -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of the QLibrary class. This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <private/qtextureglyphcache_p.h>
+#include <private/qgl_p.h>
+#include <qglshaderprogram.h>
+
+
+QT_BEGIN_NAMESPACE
+
+class QGL2PaintEngineExPrivate;
+
+class QGLTextureGlyphCache : public QObject, public QTextureGlyphCache
+{
+ Q_OBJECT
+public:
+ QGLTextureGlyphCache(QGLContext *context, QFontEngineGlyphCache::Type type, const QTransform &matrix);
+ ~QGLTextureGlyphCache();
+
+ virtual void createTextureData(int width, int height);
+ virtual void resizeTextureData(int width, int height);
+ virtual void fillTexture(const Coord &c, glyph_t glyph);
+ virtual int glyphMargin() const;
+
+ inline GLuint texture() const { return m_texture; }
+
+ inline int width() const { return m_width; }
+ inline int height() const { return m_height; }
+
+ inline void setPaintEnginePrivate(QGL2PaintEngineExPrivate *p) { pex = p; }
+
+
+public Q_SLOTS:
+ void contextDestroyed(const QGLContext *context) {
+ if (context == ctx) {
+ const QGLContext *nextCtx = qt_gl_transfer_context(ctx);
+ if (!nextCtx) {
+ // the context may not be current, so we cannot directly
+ // destroy the fbo and texture here, but since the context
+ // is about to be destroyed, the GL server will do the
+ // clean up for us anyway
+ m_fbo = 0;
+ m_texture = 0;
+ ctx = 0;
+ } else {
+ // since the context holding the texture is shared, and
+ // about to be destroyed, we have to transfer ownership
+ // of the texture to one of the share contexts
+ ctx = const_cast<QGLContext *>(nextCtx);
+ }
+ }
+ }
+
+private:
+ QGLContext *ctx;
+
+ QGL2PaintEngineExPrivate *pex;
+
+ GLuint m_texture;
+ GLuint m_fbo;
+
+ int m_width;
+ int m_height;
+
+ QGLShaderProgram *m_program;
+};
+
+QT_END_NAMESPACE
+
+#endif
+