1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtOpenGL module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef QGLPIXELBUFFER_H

    43 #define QGLPIXELBUFFER_H

    44 

    45 #include <QtOpenGL/qgl.h>

    46 #include <QtGui/qpaintdevice.h>

    47 

    48 QT_BEGIN_HEADER

    49 

    50 QT_BEGIN_NAMESPACE

    51 

    52 QT_MODULE(OpenGL)

    53 

    54 class QGLPixelBufferPrivate;

    55 

    56 class Q_OPENGL_EXPORT QGLPixelBuffer : public QPaintDevice

    57 {

    58     Q_DECLARE_PRIVATE(QGLPixelBuffer)

    59 public:

    60     QGLPixelBuffer(const QSize &size, const QGLFormat &format = QGLFormat::defaultFormat(),

    61                    QGLWidget *shareWidget = 0);

    62     QGLPixelBuffer(int width, int height, const QGLFormat &format = QGLFormat::defaultFormat(),

    63                    QGLWidget *shareWidget = 0);

    64     virtual ~QGLPixelBuffer();

    65 

    66     bool isValid() const;

    67     bool makeCurrent();

    68     bool doneCurrent();

    69 

    70     GLuint generateDynamicTexture() const;

    71     bool bindToDynamicTexture(GLuint texture);

    72     void releaseFromDynamicTexture();

    73     void updateDynamicTexture(GLuint texture_id) const;

    74 

    75     GLuint bindTexture(const QImage &image, GLenum target = GL_TEXTURE_2D);

    76     GLuint bindTexture(const QPixmap &pixmap, GLenum target = GL_TEXTURE_2D);

    77     GLuint bindTexture(const QString &fileName);

    78     void deleteTexture(GLuint texture_id);

    79 

    80     void drawTexture(const QRectF &target, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);

    81     void drawTexture(const QPointF &point, GLuint textureId, GLenum textureTarget = GL_TEXTURE_2D);

    82 

    83 #ifdef Q_MAC_COMPAT_GL_FUNCTIONS

    84     bool bindToDynamicTexture(QMacCompatGLuint texture);

    85     void updateDynamicTexture(QMacCompatGLuint texture_id) const;

    86     GLuint bindTexture(const QImage &image, QMacCompatGLenum target = GL_TEXTURE_2D);

    87     GLuint bindTexture(const QPixmap &pixmap, QMacCompatGLenum target = GL_TEXTURE_2D);

    88 

    89     void drawTexture(const QRectF &target, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);

    90     void drawTexture(const QPointF &point, QMacCompatGLuint textureId, QMacCompatGLenum textureTarget = GL_TEXTURE_2D);

    91 

    92     void deleteTexture(QMacCompatGLuint texture_id);

    93 #endif

    94 

    95     QSize size() const;

    96     Qt::HANDLE handle() const;

    97     QImage toImage() const;

    98 

    99     QPaintEngine *paintEngine() const;

   100     QGLFormat format() const;

   101 

   102     static bool hasOpenGLPbuffers();

   103 

   104 protected:

   105     int metric(PaintDeviceMetric metric) const;

   106     int devType() const { return QInternal::Pbuffer; }

   107 

   108 private:

   109     Q_DISABLE_COPY(QGLPixelBuffer)

   110     QScopedPointer<QGLPixelBufferPrivate> d_ptr;

   111     friend class QGLDrawable;

   112     friend class QGLWindowSurface;

   113     friend class QGLPaintDevice;

   114     friend class QGLPBufferGLPaintDevice;

   115 };

   116 

   117 QT_END_NAMESPACE

   118 

   119 QT_END_HEADER

   120 

   121 #endif // QGLPIXELBUFFER_H