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# glwidget.h Example File
opengl/framebufferobject/glwidget.h

     /****************************************************************************
     **
     ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the example classes of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
     ** License version 2.0 as published by the Free Software Foundation
     ** and appearing in the file LICENSE.GPL included in the packaging of
     ** this file.  Please review the following information to ensure GNU
     ** General Public Licensing requirements will be met:
     ** http://www.trolltech.com/products/qt/opensource.html
     **
     ** If you are unsure which license is appropriate for your use, please
     ** review the following information:
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     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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     ****************************************************************************/

     #include <QtOpenGL>
     #include <QImage>
     #include <QTimeLine>
     #include <QSvgRenderer>

     class GLWidget : public QGLWidget
     {
         Q_OBJECT

     public:
         GLWidget(QWidget *parent);
         ~GLWidget();

         void saveGLState();
         void restoreGLState();

         void paintEvent(QPaintEvent *);
         void mousePressEvent(QMouseEvent *);
         void mouseDoubleClickEvent(QMouseEvent *);
         void mouseMoveEvent(QMouseEvent *);
         void timerEvent(QTimerEvent *);
         void wheelEvent(QWheelEvent *);

     public slots:
         void animate(qreal);
         void animFinished();
         void draw();

     private:
         QPoint anchor;
         float scale;
         float rot_x, rot_y, rot_z;
         GLuint tile_list;
         GLfloat *wave;

         QImage logo;
         QTimeLine *anim;
         QSvgRenderer *svg_renderer;
         QGLFramebufferObject *fbo;
     };