qt_opengl_player.cpp

//----------.h file ------------
#ifndef MYVIDEOWIDGET_H
#define MYVIDEOWIDGET_H

#include <QtOpenGL/QtOpenGL>
#include <QtGui/QImage>

class MyVideoWidget : public QGLWidget
{
    Q_OBJECT
public:
    explicit MyVideoWidget(QWidget *parent = 0);
    void setFrame(const QImage frame);

protected:
    void paintEvent(QPaintEvent *e);
    void mouseDoubleClickEvent(QMouseEvent *e);
signals:
    void dClicked();

private:
    QImage frame;
};

#endif // MYVIDEOWIDGET_H

// --------------.cpp-------------

#include "myvideowidget.h"
#include <QtGui/QMouseEvent>


MyVideoWidget::MyVideoWidget(QWidget *parent) :
    QGLWidget(parent)
{
}

void MyVideoWidget::setFrame(const QImage frame)
{
    this->frame = frame;
    // paint new frame
    this->update();
}

void MyVideoWidget::paintEvent(QPaintEvent *e)
{
    // set the painter to use a smooth scaling
    QPainter p(this);
    p.setRenderHint(QPainter::SmoothPixmapTransform,true);
    p.drawImage(this->rect(), frame);
    e->accept();
}

void MyVideoWidget::mouseDoubleClickEvent(QMouseEvent *e)
{
    emit dClicked();
    e->accept();
}