webcamviewer.h

#ifndef WEBCAMVIEWER_H
#define WEBCAMVIEWER_H

#include <QWidget>

#include <QGLWidget>
#include <opencv2/core/core.hpp>

class WebcamViewer : public QGLWidget
{
    Q_OBJECT
public:
    explicit WebcamViewer(QWidget *parent = 0);

    virtual void mousePressEvent(QMouseEvent *event);

protected:
    void initializeGL(); /// OpenGL initialization
    void paintGL(); /// OpenGL Rendering
    void resizeGL(int width, int height); /// Widget Resize Event

    void updateScene(); /// Forces a scene update
    void renderImage(); /// Render image on openGL frame
signals:
   void imageSizeChanged( int outW, int outH ); /// Used to resize the image outside the widget

   void mousePress(int x, int y);

public slots:
   bool showImage( cv::Mat image ); /// Used to set the image to be viewed

private:

    bool mSceneChanged; /// Indicates when OpenGL view is to be redrawn

    QImage mRenderQtImg; /// Qt image to be rendered
    cv::Mat mOrigImage; /// original OpenCV image to be shown

    QColor mBgColor; /// Background color

    int mOutH; /// Resized Image height
    int mOutW; /// Resized Image width
    float mImgRatio; /// height/width ratio

    int mPosX; /// Top left X position to render image in the center of widget
    int mPosY; /// Top left Y position to render image in the center of widget

};

#endif // WEBCAMVIEWER_H