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39 | |
40 | #ifndef QGLPAINTDEVICE_P_H |
41 | #define QGLPAINTDEVICE_P_H |
42 | |
43 | // |
44 | // W A R N I N G |
45 | // ------------- |
46 | // |
47 | // This file is not part of the Qt API. It exists for the convenience |
48 | // of the Qt OpenGL module. This header file may change from |
49 | // version to version without notice, or even be removed. |
50 | // |
51 | // We mean it. |
52 | // |
53 | |
54 | |
55 | #include <qpaintdevice.h> |
56 | #include <QtOpenGL/qgl.h> |
57 | |
58 | |
59 | QT_BEGIN_NAMESPACE |
60 | |
61 | class Q_OPENGL_EXPORT QGLPaintDevice : public QPaintDevice |
62 | { |
63 | public: |
64 | QGLPaintDevice(); |
65 | virtual ~QGLPaintDevice(); |
66 | |
67 | int devType() const override {return QInternal::OpenGL;} |
68 | |
69 | virtual void beginPaint(); |
70 | virtual void ensureActiveTarget(); |
71 | virtual void endPaint(); |
72 | |
73 | virtual QGLContext* context() const = 0; |
74 | virtual QGLFormat format() const; |
75 | virtual QSize size() const = 0; |
76 | virtual bool alphaRequested() const; |
77 | virtual bool isFlipped() const; |
78 | |
79 | // returns the QGLPaintDevice for the given QPaintDevice |
80 | static QGLPaintDevice* getDevice(QPaintDevice*); |
81 | |
82 | protected: |
83 | int metric(QPaintDevice::PaintDeviceMetric metric) const override; |
84 | GLuint m_previousFBO; |
85 | GLuint m_thisFBO; |
86 | }; |
87 | |
88 | |
89 | // Wraps a QGLWidget |
90 | class QGLWidget; |
91 | class Q_OPENGL_EXPORT QGLWidgetGLPaintDevice : public QGLPaintDevice |
92 | { |
93 | public: |
94 | QGLWidgetGLPaintDevice(); |
95 | |
96 | virtual QPaintEngine* paintEngine() const override; |
97 | |
98 | // QGLWidgets need to do swapBufers in endPaint: |
99 | virtual void beginPaint() override; |
100 | virtual void endPaint() override; |
101 | virtual QSize size() const override; |
102 | virtual QGLContext* context() const override; |
103 | |
104 | void setWidget(QGLWidget*); |
105 | |
106 | private: |
107 | friend class QGLWidget; |
108 | QGLWidget *glWidget; |
109 | }; |
110 | |
111 | QT_END_NAMESPACE |
112 | |
113 | #endif // QGLPAINTDEVICE_P_H |
114 | |