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Diffstat (limited to 'src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h')
| -rw-r--r-- | src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h new file mode 100644 index 0000000..2a8a782 --- /dev/null +++ b/src/opengl/gl2paintengineex/qtextureglyphcache_gl_p.h @@ -0,0 +1,123 @@ +/**************************************************************************** +** +** 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 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 + |