/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtOpenGL module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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#ifndef QPIXMAPDATA_GL_P_H+
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#define QPIXMAPDATA_GL_P_H+
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+
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//+
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//  W A R N I N G+
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//  -------------+
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//+
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// This file is not part of the Qt API.  It exists purely as an+
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// implementation detail.  This header file may change from version to+
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// version without notice, or even be removed.+
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//+
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// We mean it.+
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//+
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+
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#include "qgl_p.h"+
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#include "qgl.h"+
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+
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#include "private/qpixmapdata_p.h"+
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#include "private/qglpaintdevice_p.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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class QPaintEngine;+
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class QGLFramebufferObject;+
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class QGLFramebufferObjectFormat;+
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class QGLPixmapData;+
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+
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class QGLFramebufferObjectPool+
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{+
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public:+
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    QGLFramebufferObject *acquire(const QSize &size, const QGLFramebufferObjectFormat &format, bool strictSize = false);+
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    void release(QGLFramebufferObject *fbo);+
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+
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private:+
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    QList<QGLFramebufferObject *> m_fbos;+
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};+
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+
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QGLFramebufferObjectPool* qgl_fbo_pool();+
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+
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+
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class QGLPixmapGLPaintDevice : public QGLPaintDevice+
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{+
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public:+
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    QPaintEngine* paintEngine() const;+
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+
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    void beginPaint();+
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    void endPaint();+
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    QGLContext* context() const;+
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    QSize size() const;+
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    bool alphaRequested() const;+
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+
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    void setPixmapData(QGLPixmapData*);+
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private:+
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    QGLPixmapData *data;+
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};+
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+
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+
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class QGLPixmapData : public QPixmapData+
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{+
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public:+
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    QGLPixmapData(PixelType type);+
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    ~QGLPixmapData();+
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+
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    QPixmapData *createCompatiblePixmapData() const;+
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+
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    // Re-implemented from QPixmapData:+
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    void resize(int width, int height);+
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    void fromImage(const QImage &image, Qt::ImageConversionFlags flags);+
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    bool fromFile(const QString &filename, const char *format,+
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                  Qt::ImageConversionFlags flags);+
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    bool fromData(const uchar *buffer, uint len, const char *format,+
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                  Qt::ImageConversionFlags flags);+
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    void copy(const QPixmapData *data, const QRect &rect);+
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    bool scroll(int dx, int dy, const QRect &rect);+
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    void fill(const QColor &color);+
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    bool hasAlphaChannel() const;+
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    QImage toImage() const;+
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    QPaintEngine *paintEngine() const;+
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    int metric(QPaintDevice::PaintDeviceMetric metric) const;+
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+
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    // For accessing as a target:+
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    QGLPaintDevice *glDevice() const;+
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+
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    // For accessing as a source:+
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    bool isValidContext(const QGLContext *ctx) const;+
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    GLuint bind(bool copyBack = true) const;+
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    QGLTexture *texture() const;+
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+
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private:+
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    bool isValid() const;+
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+
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    void ensureCreated() const;+
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+
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    bool isUninitialized() const { return m_dirty && m_source.isNull(); }+
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+
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    bool needsFill() const { return m_hasFillColor; }+
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    QColor fillColor() const { return m_fillColor; }+
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+
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+
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+
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    QGLPixmapData(const QGLPixmapData &other);+
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    QGLPixmapData &operator=(const QGLPixmapData &other);+
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+
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    void copyBackFromRenderFbo(bool keepCurrentFboBound) const;+
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    QSize size() const { return QSize(w, h); }+
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+
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    static bool useFramebufferObjects();+
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+
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    QImage fillImage(const QColor &color) const;+
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+
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    mutable QGLFramebufferObject *m_renderFbo;+
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    mutable QPaintEngine *m_engine;+
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    mutable QGLContext *m_ctx;+
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    mutable QImage m_source;+
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    mutable QGLTexture m_texture;+
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+
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    // the texture is not in sync with the source image+
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    mutable bool m_dirty;+
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+
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    // fill has been called and no painting has been done, so the pixmap is+
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    // represented by a single fill color+
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    mutable QColor m_fillColor;+
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    mutable bool m_hasFillColor;+
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+
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    mutable bool m_hasAlpha;+
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+
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    mutable QGLPixmapGLPaintDevice m_glDevice;+
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+
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    friend class QGLPixmapGLPaintDevice;+
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};+
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+
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QT_END_NAMESPACE+
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+
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#endif // QPIXMAPDATA_GL_P_H+
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+
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+
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