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50
51#ifndef QFBOPAINTDEVICE_H
52#define QFBOPAINTDEVICE_H
53
54#ifndef QT_NO_OPENGL
55
56#include <QImage>
57#include <QOpenGLFramebufferObject>
58#include <QOpenGLPaintDevice>
59#include <QSurface>
60
61class QFboPaintDevice : public QOpenGLPaintDevice {
62public:
63 QFboPaintDevice(const QSize &size, bool flipped = false, bool clearOnInit = true,
64 QOpenGLFramebufferObject::Attachment = QOpenGLFramebufferObject::CombinedDepthStencil);
65 ~QFboPaintDevice();
66
67 // QOpenGLPaintDevice:
68 void ensureActiveTarget() override;
69
70 bool isValid() const { return m_framebufferObject->isValid(); }
71 GLuint handle() const { return m_framebufferObject->handle(); }
72 GLuint takeTexture();
73 QImage toImage() const;
74
75 bool bind() { return m_framebufferObject->bind(); }
76 bool release() { return m_framebufferObject->release(); }
77 QSize size() const { return m_framebufferObject->size(); }
78
79 QOpenGLFramebufferObject* framebufferObject() { return m_framebufferObject; }
80 const QOpenGLFramebufferObject* framebufferObject() const { return m_framebufferObject; }
81
82 static bool isSupported() { return QOpenGLFramebufferObject::hasOpenGLFramebufferObjects(); }
83
84private:
85 QOpenGLFramebufferObject *m_framebufferObject;
86 QSurface *m_surface;
87};
88
89#endif // QT_NO_OPENGL
90
91#endif // QFBOPAINTDEVICE_H
92

source code of qtbase/examples/widgets/painting/shared/fbopaintdevice.h