src/opengl/qglpaintdevice_p.h

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  41
  42 #ifndef QGLPAINTDEVICE_P_H
  43 #define QGLPAINTDEVICE_P_H
  44
  45 //
  46 //  W A R N I N G
  47 //  -------------
  48 //
  49 // This file is not part of the Qt API.  It exists for the convenience
  50 // of the QtOpenGL module.  This header file may change from
  51 // version to version without notice, or even be removed.
  52 //
  53 // We mean it.
  54 //
  55
  56
  57 #include <qpaintdevice.h>
  58 #include <qgl.h>
  59
  60
  61 QT_BEGIN_NAMESPACE
  62
  63 class Q_OPENGL_EXPORT QGLPaintDevice : public QPaintDevice
  64 {
  65 public:
  66     QGLPaintDevice();
  67     virtual ~QGLPaintDevice();
  68
  69     int devType() const {return QInternal::OpenGL;}
  70
  71     virtual void beginPaint();
  72     virtual void ensureActiveTarget();
  73     virtual void endPaint();
  74
  75     virtual QGLContext* context() const = 0;
  76     virtual QGLFormat format() const;
  77     virtual QSize size() const = 0;
  78
  79     // returns the QGLPaintDevice for the given QPaintDevice
  80     static QGLPaintDevice* getDevice(QPaintDevice*);
  81
  82 protected:
  83     GLuint m_previousFBO;
  84     GLuint m_thisFBO;
  85 };
  86
  87
  88 // Wraps a QGLWidget
  89 class QGLWidget;
  90 class QGLWidgetGLPaintDevice : public QGLPaintDevice
  91 {
  92 public:
  93     QGLWidgetGLPaintDevice();
  94
  95     virtual QPaintEngine* paintEngine() const;
  96
  97     // QGLWidgets need to do swapBufers in endPaint:
  98     virtual void beginPaint();
  99     virtual void endPaint();
 100     virtual QSize size() const;
 101     virtual QGLContext* context() const;
 102
 103     void setWidget(QGLWidget*);
 104
 105 private:
 106     friend class QGLWidget;
 107     QGLWidget *glWidget;
 108 };
 109
 110 QT_END_NAMESPACE
 111
 112 #endif // QGLPAINTDEVICE_P_H