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39
40#ifndef QOPENGLWIDGET_H
41#define QOPENGLWIDGET_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44
45#ifndef QT_NO_OPENGL
46
47#include <QtWidgets/QWidget>
48#include <QtGui/QSurfaceFormat>
49#include <QtGui/qopengl.h>
50
51QT_BEGIN_NAMESPACE
52
53class QOpenGLWidgetPrivate;
54
55class Q_WIDGETS_EXPORT QOpenGLWidget : public QWidget
56{
57 Q_OBJECT
58 Q_DECLARE_PRIVATE(QOpenGLWidget)
59
60public:
61 enum UpdateBehavior {
62 NoPartialUpdate,
63 PartialUpdate
64 };
65
66 explicit QOpenGLWidget(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
67 ~QOpenGLWidget();
68
69 void setUpdateBehavior(UpdateBehavior updateBehavior);
70 UpdateBehavior updateBehavior() const;
71
72 void setFormat(const QSurfaceFormat &format);
73 QSurfaceFormat format() const;
74
75 GLenum textureFormat() const;
76 void setTextureFormat(GLenum texFormat);
77
78 bool isValid() const;
79
80 void makeCurrent();
81 void doneCurrent();
82
83 QOpenGLContext *context() const;
84 GLuint defaultFramebufferObject() const;
85
86 QImage grabFramebuffer();
87
88Q_SIGNALS:
89 void aboutToCompose();
90 void frameSwapped();
91 void aboutToResize();
92 void resized();
93
94protected:
95 virtual void initializeGL();
96 virtual void resizeGL(int w, int h);
97 virtual void paintGL();
98
99 void paintEvent(QPaintEvent *e) override;
100 void resizeEvent(QResizeEvent *e) override;
101 bool event(QEvent *e) override;
102
103 int metric(QPaintDevice::PaintDeviceMetric metric) const override;
104 QPaintDevice *redirected(QPoint *p) const override;
105 QPaintEngine *paintEngine() const override;
106
107private:
108 Q_DISABLE_COPY(QOpenGLWidget)
109};
110
111QT_END_NAMESPACE
112
113#endif // QT_NO_OPENGL
114
115#endif // QOPENGLWIDGET_H
116

source code of qtbase/src/widgets/kernel/qopenglwidget.h