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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
61QT_BEGIN_NAMESPACE
62
63class Q_OPENGL_EXPORT QGLPaintDevice : public QPaintDevice
64{
65public:
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 virtual bool alphaRequested() const;
79 virtual bool isFlipped() const;
80
81 // returns the QGLPaintDevice for the given QPaintDevice
82 static QGLPaintDevice* getDevice(QPaintDevice*);
83
84protected:
85 int metric(QPaintDevice::PaintDeviceMetric metric) const;
86 GLuint m_previousFBO;
87 GLuint m_thisFBO;
88};
89
90
91// Wraps a QGLWidget
92class QGLWidget;
93class QGLWidgetGLPaintDevice : public QGLPaintDevice
94{
95public:
96 QGLWidgetGLPaintDevice();
97
98 virtual QPaintEngine* paintEngine() const;
99
100 // QGLWidgets need to do swapBufers in endPaint:
101 virtual void beginPaint();
102 virtual void endPaint();
103 virtual QSize size() const;
104 virtual QGLContext* context() const;
105
106 void setWidget(QGLWidget*);
107
108private:
109 friend class QGLWidget;
110 QGLWidget *glWidget;
111};
112
113QT_END_NAMESPACE
114
115#endif // QGLPAINTDEVICE_P_H
116