SelectTimeWidget.h

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/***************************************************************************
     SelectTimeWidget.h  -  widget for selecting a time or range
                             -------------------
    begin                : Thu Jan 16 2003
    copyright            : (C) 2002 by Thomas Eschenbacher
    email                : 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 SELECT_TIME_WIDGET_H
#define SELECT_TIME_WIDGET_H

#include "config.h"

#include <QtGlobal>
#include <QGroupBox>
#include <QObject>
#include <QTimer>

#include "libgui/ui_SelectTimeWidgetBase.h"
#include "libkwave/Sample.h"

namespace Kwave
{

    class Q_DECL_EXPORT SelectTimeWidget
        :public QGroupBox, public Ui::SelectTimeWidgetBase
    {
        Q_OBJECT
    public:

        typedef enum {
            byTime = 0, 
            bySamples,  
            byPercents  
        } Mode;

        explicit SelectTimeWidget(QWidget *widget);

        virtual void init(Mode mode, quint64 range, double sample_rate,
                          sample_index_t offset, sample_index_t signal_length);

        virtual ~SelectTimeWidget();

        void setMode(Mode new_mode);

        Mode mode() const { return m_mode; }

        quint64 time() const { return m_range; }

        sample_index_t samples() const;

        virtual void setTitle(const QString title);

        static sample_index_t timeToSamples(Mode mode, quint64 time,
                                            double rate, sample_index_t length);

        static quint64 samplesToTime(Mode mode, sample_index_t time,
                                     double rate, sample_index_t length);

    signals:

        void valueChanged(sample_index_t samples);

    public slots:

        void setOffset(sample_index_t offset);

    private slots:

        void modeChanged(bool checked);

        void timeChanged(int);

        void checkNewSampleEdit();

        void samplesChanged(int);

        void percentsChanged(int p);

    private:

        void connect();

        void disconnect();

    private:

        Mode m_mode;

        quint64 m_range;

        double m_rate;

        sample_index_t m_offset;

        sample_index_t m_length;

        QTimer m_timer;

    };
}

#endif /* SELECT_TIME_WIDGET_H */

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