image_widget.h

#ifndef IMAGEWIDGET_H
#define IMAGEWIDGET_H

#include <QRectF>
#include <QImage>
#include <QLabel>
#include "core/export_handling.h"
#include "streams/image.h"
#include "streams/stream_object.h"
#include "gui/stream_widget.h"

class QWidget;
class QPaintEvent;
class QResizeEvent;

// TODO Use native OpenGL (maybe that? https://github.com/Myzhar/QtOpenCVViewerGl),
// implement BGR display for OpenCV, just switching to QOpenGLWidget doesn't seem to work,
// don't know why.
class ROVIZ_EXPORT ImageWidget : public QLabel, public StreamWidget
{
Q_OBJECT

public:
    ImageWidget(OutputPrivate *out);

    void newObject(StreamObject obj) override;

    void reset(void) override;

    QWidget *qwidget(void) override;

protected:
    virtual void paintEvent(QPaintEvent *event) override;

    void resizeEvent(QResizeEvent *event) override;

protected:
    QImage image_qt;
    Image image; // To keep a reference, prevents deletion
    QRectF image_rect;

    void recalcImageRect(double w, double h);
};

#endif // IMAGEWIDGET_H