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//=========================================================
// MusE
// Linux Music Editor
// $Id: volslider.cpp,v 1.1.1.1 2003/10/29 10:05:23 wschweer Exp $
//
// (C) Copyright 2000 Werner Schweer (ws@seh.de)
//=========================================================
#include <cmath>
#include "../audio.h"
#include "volslider.h"
#include "globals.h"
//---------------------------------------------------------
// VolSlider
//---------------------------------------------------------
VolSlider::VolSlider(QWidget* parent, AudioNode* s)
: Slider(parent, "vol", Slider::Vertical, Slider::None, Slider::BgTrough | Slider::BgSlot)
{
src = s;
setRange(minSlider-0.1, 10.0);
connect(this, SIGNAL(valueChanged(double)), SLOT(valueChanged(double)));
}
//---------------------------------------------------------
// volChanged
//---------------------------------------------------------
void VolSlider::valueChanged(double val)
{
double vol;
if (val <= minSlider) {
vol = 0.0;
val -= 1.0; // display special value "off"
}
else
vol = pow(10.0, val/20.0);
audio->msgSetVolume(src, vol);
emit volChanged(val);
}
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