#ifndef IMAGEWIDGET_H_
#define IMAGEWIDGET_H_

#include <opencv2/opencv.hpp>
#include <GL/gl.h>
#include <GL/glext.h>
#include <GL/glu.h>
#include <QObject>
#include <QtOpenGL>

#include "../../Utils/Image.h"
#include "../../Utils/Log.h"

class ImageWidget : public QGLWidget {

Q_OBJECT

public:

    /*!
     * ImageWidget constructor.
     *
     * @param parent The parent widget.
     * @param width Image width.
     * @param height Image height.
     */
    ImageWidget(QWidget* parent = 0, int width = 320, int height = 240);

    /*!
     * Refreshes the image.
     *
     * @param image The image to be refreshed.
     */
    virtual void refreshImage(IplImage* image);

    /*!
     * Returns current image
     */
    IplImage* getImage() {
        return _imageRef;
    }

protected:

    //Initialized with NULL on constructor's initialization list.
    //! Image reference.
    IplImage *_imageRef;

    /*!
     * Resizes the viewport.
     *
     * @param width Viewport width.
     * @param height Viewport height.
     */
    void resizeGL(int width, int height);

    /*!
     * Image widget paint event handler.
     *
     * @param paintEvent The event to be handled.
     */
    virtual void paintEvent(QPaintEvent *paintEvent);

    /*!
     * Sets the viewport up.
     *
     * @param width Viewport width.
     * @param height Viewport height.
     */
    void setupViewPort(int width, int height);

    /*!
     * Draws the background image.
     */
    void drawBackgroundImage();
};

#endif /* IMAGEWIDGET_H_ */