histogrambox.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2008-09-30
 * Description : a widget to display an image histogram and its control widgets
 *
 * Copyright (C) 2008-2009 by Andi Clemens <andi dot clemens at gmail dot com>
 * 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_HISTOGRAM_BOX_H
#define DIGIKAM_HISTOGRAM_BOX_H
 
// Qt includes
 
#include <QWidget>
 
// Local includes
 
#include "digikam_debug.h"
#include "digikam_export.h"
#include "digikam_globals.h"
 
class QColor;
 
namespace Digikam
{
 
class HistogramWidget;
 
class DIGIKAM_EXPORT HistogramBox : public QWidget
{
    Q_OBJECT
 
public:
 
    explicit HistogramBox(QWidget* const parent = nullptr,
                          HistogramBoxType type = Digikam::LRGB,
                          bool selectMode = false);
    ~HistogramBox() override;
 
    void setHistogramType(HistogramBoxType type);
    void setHistogramMargin(int);
 
    void setGradientColors(const QColor& from, const QColor& to);
    void setGradientVisible(bool visible);
 
    ChannelType channel()           const;
    void setChannelEnabled(bool enabled);
 
    void setStatisticsVisible(bool b);
 
    HistogramScale scale()          const;
 
    HistogramWidget* histogram()    const;
 
Q_SIGNALS:
 
    void signalChannelChanged(ChannelType channel);
    void signalScaleChanged(HistogramScale scale);
 
public Q_SLOTS:
 
    void setChannel(ChannelType channel);
    void setScale(HistogramScale scale);
 
protected Q_SLOTS:
 
    void slotChannelChanged();
    void slotScaleChanged();
 
private:
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_HISTOGRAM_BOX_H