Chris@0: /* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     A waveform viewer and audio annotation editor.
Chris@5:     Chris Cannam, Queen Mary University of London, 2005-2006
Chris@0:     
Chris@0:     This is experimental software.  Not for distribution.
Chris@0: */
Chris@0: 
Chris@0: #ifndef FADER_H
Chris@0: #define FADER_H
Chris@0: 
Chris@0: /**
Chris@0:  * Horizontal audio fader and meter widget.
Chris@0:  * Based on the vertical fader and meter widget from:
Chris@0:  * 
Chris@0:  * Hydrogen
Chris@0:  * Copyright(c) 2002-2005 by Alex >Comix< Cominu [comix@users.sourceforge.net]
Chris@0:  *
Chris@0:  * http://www.hydrogen-music.org
Chris@0:  *
Chris@0:  * This program is free software; you can redistribute it and/or modify
Chris@0:  * it under the terms of the GNU General Public License as published by
Chris@0:  * the Free Software Foundation; either version 2 of the License, or
Chris@0:  * (at your option) any later version.
Chris@0:  *
Chris@0:  * This program is distributed in the hope that it will be useful,
Chris@0:  * but WITHOUT ANY WARRANTY, without even the implied warranty of
Chris@0:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
Chris@0:  * GNU General Public License for more details.
Chris@0:  *
Chris@0:  * You should have received a copy of the GNU General Public License
Chris@0:  * along with this program; if not, write to the Free Software
Chris@0:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
Chris@0:  *
Chris@0:  * $Id: Fader.h,v 1.14 2005/08/10 08:03:30 comix Exp $
Chris@0:  */
Chris@0: 
Chris@0: 
Chris@0: #include <string>
Chris@0: #include <iostream>
Chris@0: 
Chris@0: #include <QWidget>
Chris@0: #include <QPixmap>
Chris@0: #include <QMouseEvent>
Chris@0: #include <QWheelEvent>
Chris@0: #include <QPaintEvent>
Chris@0: 
Chris@0: class Fader : public QWidget
Chris@0: {
Chris@0:     Q_OBJECT
Chris@0: 
Chris@0: public:
Chris@0:     Fader(QWidget *parent, bool withoutKnob = false);
Chris@0:     ~Fader();
Chris@0: 
Chris@0:     void setValue(float newValue);
Chris@0:     float getValue();
Chris@0: 
Chris@0:     void setPeakLeft(float);
Chris@0:     float getPeakLeft() { return m_peakLeft; }
Chris@0: 
Chris@0:     void setPeakRight(float);
Chris@0:     float getPeakRight() { return m_peakRight; }
Chris@0: 
Chris@0:     virtual void mousePressEvent(QMouseEvent *ev);
Chris@0:     virtual void mouseDoubleClickEvent(QMouseEvent *ev);
Chris@0:     virtual void mouseMoveEvent(QMouseEvent *ev);
Chris@0:     virtual void wheelEvent( QWheelEvent *ev );
Chris@0:     virtual void paintEvent(QPaintEvent *ev);
Chris@0: 
Chris@0: signals:
Chris@0:     void valueChanged(float); // 0.0 -> 1.0
Chris@0: 
Chris@0: private:
Chris@0:     bool m_withoutKnob;
Chris@0:     float m_value;
Chris@0:     float m_peakLeft;
Chris@0:     float m_peakRight;
Chris@0: 
Chris@0:     QPixmap m_back;
Chris@0:     QPixmap m_leds;
Chris@0:     QPixmap m_knob;
Chris@0:     QPixmap m_clip;
Chris@0: };
Chris@0: 
Chris@0: #endif