/* Copyright (C) 2015 J.F.Dockes
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef VOLUMEWIDGETIF_INCLUDED
#define VOLUMEWIDGETIF_INCLUDED
#include <QWidget>
#include <QString>
// Abstract interface for a volume control.
class VolumeWidgetIF : public QWidget {
Q_OBJECT;
public:
VolumeWidgetIF(QWidget *parent = 0)
: QWidget(parent) {
}
virtual ~VolumeWidgetIF() {}
public slots:
// Volume range is always enforced as 0-100
// Set volume value and do whatever we do when volume changes
// (emit signals)
virtual void set(int value) = 0;
// Increment/decrement value and do whatever we do when volume
// changes (emit signals)
virtual void step(int steps) = 0;
// Do what we do when mute is clicked
virtual void toggleMute() = 0;
// Set-up display, keep quiet
virtual void setUi(int value) = 0;
virtual void setMuteUi(bool) = 0;
virtual void volumeHigher() {
step(5);
}
virtual void volumeLower() {
step(-5);
}
virtual void setSkinName(const QString&) {
}
signals:
void volumeChanged(int);
void muteChanged(bool);
};
#endif