CurveWidget.h

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/***************************************************************************
          CurveWidget.h  -  widget for editing an interpolated curve
                             -------------------
    begin                : Sep 16 2001
    copyright            : (C) 2001 by Thomas Eschenbacher
    email                : Thomas Eschenbacher <thomas.eschenbacher@gmx.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 CURVE_WIDGET_H
#define CURVE_WIDGET_H

#include "config.h"

#include <QtGlobal>
#include <QMenu>
#include <QWidget>

#include "libkwave/Curve.h"

class QAction;
class QMouseEvent;
class QPaintEvent;
class QPixmap;
class QString;

namespace Kwave
{
    class Q_DECL_EXPORT CurveWidget: public QWidget
    {
        Q_OBJECT
    public:

        explicit CurveWidget(QWidget *parent);

        virtual ~CurveWidget() Q_DECL_OVERRIDE;

        QString getCommand();

        void setCurve(const QString &command);

        void addPoint(double x, double y);

        Kwave::Curve::Point findPoint(int sx, int sy);

    public slots:

        void selectInterpolationType(QAction *action);

        void scaleFit();

        void VFlip();

        void HFlip();

        void deleteLast();

        void deleteSecond();

        void firstHalf();

        void secondHalf();

        void savePreset();

        void loadPreset(QAction *action);

    protected slots:

        virtual void mousePressEvent(QMouseEvent * ) Q_DECL_OVERRIDE;
        virtual void mouseReleaseEvent(QMouseEvent * ) Q_DECL_OVERRIDE;
        virtual void mouseMoveEvent(QMouseEvent * ) Q_DECL_OVERRIDE;
        virtual void paintEvent(QPaintEvent *) Q_DECL_OVERRIDE;

    protected:

        void loadPresetList();

    private:

        int m_width;

        int m_height;

        Kwave::Curve m_curve;

        QMenu *m_menu;

        QMenu *m_preset_menu;

        Kwave::Curve::Point m_current;

        Kwave::Curve::Point m_last;

        bool m_down;

        QPixmap m_knob;

        QPixmap m_selected_knob;

    };
}

#endif // _CURVE_WIDGET_H_

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