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# qglpixelbuffer.h

Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtOpenGL module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QGLPIXELBUFFER_H
    00043 #define QGLPIXELBUFFER_H
    00044
    00045 #include <QtOpenGL/qgl.h>
    00046 #include <QtGui/qpaintdevice.h>
    00047
    00048 QT_BEGIN_HEADER
    00049
    00050 QT_BEGIN_NAMESPACE
    00051
    00052 QT_MODULE(OpenGL)
    00053
    00054 class QGLPixelBufferPrivate;
    00055
    00056 class Q_OPENGL_EXPORT QGLPixelBuffer : public QPaintDevice
    00057 {
    00058     Q_DECLARE_PRIVATE(QGLPixelBuffer)
    00059 public:
    00060     QGLPixelBuffer(const QSize &size, const QGLFormat &format = QGLFormat::defaultFormat(),
    00061                    QGLWidget *shareWidget = 0);
    00062     QGLPixelBuffer(int width, int height, const QGLFormat &format = QGLFormat::defaultFormat(),
    00063                    QGLWidget *shareWidget = 0);
    00064     virtual ~QGLPixelBuffer();
    00065
    00066     bool isValid() const;
    00067     bool makeCurrent();
    00068     bool doneCurrent();
    00069
    00070     GLuint generateDynamicTexture() const;
    00071     bool bindToDynamicTexture(GLuint texture);
    00072     void releaseFromDynamicTexture();
    00073     void updateDynamicTexture(GLuint texture_id) const;
    00074
    00075     GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D);
    00076     GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D);
    00077     GLuint bindTexture(const QString &fileName);
    00078     void deleteTexture(GLuint texture_id);
    00079
    00080     void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
    00081     void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);
    00082
    00083 #ifdef Q_MAC_COMPAT_GL_FUNCTIONS
    00084     bool bindToDynamicTexture(QMacCompatGLuint texture);
    00085     void updateDynamicTexture(QMacCompatGLuint texture_id) const;
    00086     GLuint bindTexture(const QImage &image, QMacCompatGLenum target = GL_TEXTURE_2D);
    00087     GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum target = GL_TEXTURE_2D);
    00088
    00089     void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
    00090     void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);
    00091
    00092     void deleteTexture(QMacCompatGLuint texture_id);
    00093 #endif
    00094
    00095     QSize size() const;
    00096     Qt::HANDLE handle() const;
    00097     QImage toImage() const;
    00098
    00099     QPaintEngine *paintEngine() const;
    00100     QGLFormat format() const;
    00101
    00102     static bool hasOpenGLPbuffers();
    00103
    00104 protected:
    00105     int metric(PaintDeviceMetric metric) const;
    00106     int devType() const { return QInternal::Pbuffer; }
    00107
    00108 private:
    00109     Q_DISABLE_COPY(QGLPixelBuffer)
    00110     QScopedPointer<QGLPixelBufferPrivate> d_ptr;
    00111     friend class QGLDrawable;
    00112     friend class QGLWindowSurface;
    00113     friend class QGLPaintDevice;
    00114     friend class QGLPBufferGLPaintDevice;
    00115     friend class QGLContextPrivate;
    00116 };
    00117
    00118 QT_END_NAMESPACE
    00119
    00120 QT_END_HEADER
    00121
    00122 #endif // QGLPIXELBUFFER_H