imageregionwidget.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2013-07-15
 * Description : a widget to draw an image clip region.
 *
 * Copyright (C) 2013-2014 by Yiou Wang <geow812 at gmail dot com>
 * Copyright (C) 2010-2012 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 * Copyright (C) 2011-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * 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, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_IMAGE_REGION_WIDGET_H
#define DIGIKAM_IMAGE_REGION_WIDGET_H
 
// Qt includes
 
#include <QPoint>
#include <QRect>
#include <QEvent>
#include <QPolygon>
#include <QPixmap>
#include <QResizeEvent>
#include <QWheelEvent>
 
// Local includes
 
#include "dimg.h"
#include "graphicsdimgview.h"
#include "imagezoomsettings.h"
#include "digikam_export.h"
 
namespace Digikam
{
 
class DIGIKAM_EXPORT ImageRegionWidget : public GraphicsDImgView
{
    Q_OBJECT
 
public:
 
    explicit ImageRegionWidget(QWidget* const parent = nullptr, bool paintExtras = true);
    ~ImageRegionWidget() override;
 
    QRect  getOriginalImageRegionToRender() const;
 
    DImg   getOriginalRegionImage(bool useDownscaledImage = false) const;
 
    DImg   getOriginalImage() const;
 
    void   setPreviewImage(const DImg& img);
    void   updateImage(const DImg& img);
 
    void   setCapturePointMode(bool b);
    bool   capturePointMode() const;
 
    void   setHighLightPoints(const QPolygon& pointsList);
 
    void   ICCSettingsChanged();
    void   exposureSettingsChanged();
 
Q_SIGNALS:
 
    void signalOriginalClipFocusChanged();
    void signalCapturedPointFromOriginal(const Digikam::DColor&, const QPoint&);
 
public Q_SLOTS:
 
    void slotPreviewModeChanged(int mode);
    void slotOriginalImageRegionChanged(bool targetDone=true);
 
protected:
 
    void mousePressEvent(QMouseEvent*) override;
    void mouseReleaseEvent(QMouseEvent*) override;
 
private:
 
    void emitCapturedPointFromOriginal(const QPointF&);
 
private Q_SLOTS:
 
    void slotOriginalImageRegionChangedDelayed();
 
private:
 
    class Private;
    Private* const d_ptr;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_IMAGE_REGION_WIDGET_H