autocrop.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2012-10-18
 * Description : Auto Crop analyzer
 *
 * Copyright (C) 2013      by Sayantan Datta <sayantan dot knz at gmail dot com>
 * Copyright (C) 2013-2022 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_AUTO_CROP_H
#define DIGIKAM_AUTO_CROP_H
 
// Qt includes
 
#include <QObject>
#include <QRect>
#include <QImage>
 
// Local includes
 
#include "digikam_export.h"
#include "nrfilter.h"
#include "dimg.h"
#include "dimgthreadedanalyser.h"
 
namespace Digikam
{
 
class DIGIKAM_EXPORT AutoCrop : public DImgThreadedAnalyser
{
    Q_OBJECT
 
public:
 
    explicit AutoCrop(DImg* const orgImage, QObject* const parent = nullptr);
    ~AutoCrop() override;
 
    void startAnalyse()         override;
 
    QRect autoInnerCrop() const;
 
private:
 
    QRect spiralClockwiseTraversal(const QImage& source, int topCrop = -1, int bottomCrop = -1);
 
private:
 
    class Private;
    Private* d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_AUTO_CROP_H