ImageView.h

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/***************************************************************************
            ImageView.h  -  simple widget class for displaying a QImage
                             -------------------
    begin                : 1999
    copyright            : (C) 1999 by Martin Wilz
    email                : Martin Wilz <mwilz@ernie.mi.uni-koeln.de>
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef IMAGEVIEW_H
#define IMAGEVIEW_H

#include "config.h"

#include <QtGlobal>
#include <QImage>
#include <QPainter>
#include <QWidget>

namespace Kwave
{
    class Q_DECL_EXPORT ImageView: public QWidget
    {
        Q_OBJECT
    public:
        explicit ImageView(QWidget *parent = Q_NULLPTR,
                           bool fit_width  = true,
                           bool fit_height = true);

        virtual ~ImageView() Q_DECL_OVERRIDE;

        QRect imageRect();

    public slots:

        void setImage(QImage image);

        void setHorizOffset(int offset);

        void setVertOffset(int offset);

    signals:

        void viewInfo(int, int, int);
        void sigCursorPos(const QPoint pos);

    protected:

        virtual void mouseMoveEvent(QMouseEvent *e) Q_DECL_OVERRIDE;

        virtual void mousePressEvent(QMouseEvent *e) Q_DECL_OVERRIDE;

        virtual void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE;

    private:
        QPoint m_offset;

        QRect m_last_rect;

        QImage m_image;

        bool m_fit_width;

        bool m_fit_height;

        double m_scale_x;

        double m_scale_y;

    };
}

#endif // _IMAGEVIEW_H_

//***************************************************************************
//***************************************************************************