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/***************************************************************************
BitrateWidget.cpp - widget selecting a bitrate for MP3 or Ogg/Vorbis
-------------------
begin : Thu Oct 24 2002
copyright : (C) 2002 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. *
* *
***************************************************************************/
#include "config.h"
#include <QSlider>
#include <QSpinBox>
#include <QtGlobal>
#include "libkwave/Utils.h"
#include "BitrateSpinBox.h"
#include "BitrateWidget.h"
/***************************************************************************/
Kwave::BitrateWidget::BitrateWidget(QWidget *parent)
:QWidget(parent),
Ui::BitrateWidgetBase(), m_rates()
{
setupUi(this);
m_rates.append(0); // don't let it stay empty, that makes life easier
connect(slider, SIGNAL(valueChanged(int)),
this, SLOT(sliderChanged(int)));
connect(spinbox, SIGNAL(valueChanged(int)),
this, SLOT(spinboxChanged(int)));
connect(slider, SIGNAL(sliderReleased()),
this, SLOT(snapInSlider()));
connect(spinbox, SIGNAL(snappedIn(int)),
slider, SLOT(setValue(int)));
}
/***************************************************************************/
Kwave::BitrateWidget::~BitrateWidget()
{
}
/***************************************************************************/
void Kwave::BitrateWidget::setValue(int bitrate)
{
slider->setValue(bitrate);
spinbox->setValue(bitrate);
}
/***************************************************************************/
int Kwave::BitrateWidget::value()
{
int value = slider->value();
int index = nearestIndex(value);
return m_rates[index];
}
/***************************************************************************/
void Kwave::BitrateWidget::setSpecialValueText(const QString &text)
{
spinbox->setSpecialValueText(text);
}
/***************************************************************************/
void Kwave::BitrateWidget::allowRates(const QList<int> &list)
{
int old_value = value();
m_rates = list;
if (m_rates.isEmpty()) m_rates.append(0);
// set new ranges
spinbox->allowRates(m_rates);
slider->setMinimum(m_rates.first());
slider->setMaximum(m_rates.last());
setValue(old_value);
}
//***************************************************************************
int Kwave::BitrateWidget::nearestIndex(int rate)
{
// find the nearest value
int nearest = 0;
foreach(int i, m_rates)
if (qAbs(i - rate) < qAbs(nearest - rate)) nearest = i;
// find the index
qsizetype index = m_rates.contains(nearest) ?
m_rates.indexOf(nearest) : 0;
// limit the index into a reasonable range
index = qBound(0, index, m_rates.size() - 1);
return static_cast<int>(index);
}
//***************************************************************************
void Kwave::BitrateWidget::sliderChanged(int value)
{
int index = nearestIndex(value);
spinbox->setValue(m_rates[index]);
emit valueChanged(value);
}
//***************************************************************************
void Kwave::BitrateWidget::spinboxChanged(int value)
{
emit valueChanged(value);
}
//***************************************************************************
void Kwave::BitrateWidget::snapInSlider()
{
int slider_value = slider->value();
int index = nearestIndex(slider_value);
slider->setValue(m_rates[index]); // snap in
}
//***************************************************************************
//***************************************************************************
#include "moc_BitrateWidget.cpp"
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