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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QOPENGLWIDGET_H
#define QOPENGLWIDGET_H
#include <QtOpenGL/qtopenglglobal.h>
#ifdef QT_WIDGETS_LIB
#include <QtWidgets/QWidget>
#include <QtGui/QSurfaceFormat>
#include <QtGui/qopengl.h>
QT_BEGIN_NAMESPACE
class QOpenGLWidgetPrivate;
class Q_OPENGL_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 // QT_WIDGETS_LIB
#endif // QOPENGLWIDGET_H
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