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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QOPENGLWIDGET_H
#define QOPENGLWIDGET_H
#include <QtOpenGLWidgets/qtopenglwidgetsglobal.h>
#include <QtWidgets/QWidget>
#include <QtGui/QSurfaceFormat>
#include <QtGui/qopengl.h>
QT_BEGIN_NAMESPACE
class QOpenGLWidgetPrivate;
class Q_OPENGLWIDGETS_EXPORT QOpenGLWidget : public QWidget
{
Q_OBJECT
Q_DECLARE_PRIVATE(QOpenGLWidget)
public:
enum UpdateBehavior {
NoPartialUpdate,
PartialUpdate
};
explicit QOpenGLWidget(QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags());
~QOpenGLWidget();
void setUpdateBehavior(UpdateBehavior updateBehavior);
UpdateBehavior updateBehavior() const;
void setFormat(const QSurfaceFormat &format);
QSurfaceFormat format() const;
GLenum textureFormat() const;
void setTextureFormat(GLenum texFormat);
bool isValid() const;
void makeCurrent();
void doneCurrent();
QOpenGLContext *context() const;
GLuint defaultFramebufferObject() const;
QImage grabFramebuffer();
Q_SIGNALS:
void aboutToCompose();
void frameSwapped();
void aboutToResize();
void resized();
protected:
virtual void initializeGL();
virtual void resizeGL(int w, int h);
virtual void paintGL();
void paintEvent(QPaintEvent *e) override;
void resizeEvent(QResizeEvent *e) override;
bool event(QEvent *e) override;
int metric(QPaintDevice::PaintDeviceMetric metric) const override;
QPaintDevice *redirected(QPoint *p) const override;
QPaintEngine *paintEngine() const override;
private:
Q_DISABLE_COPY(QOpenGLWidget)
};
QT_END_NAMESPACE
#endif // QOPENGLWIDGET_H
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