playercontrols.cpp Example File
player/playercontrols.cpp
#include "playercontrols.h"
#include <QtGui/qboxlayout.h>
#include <QtGui/qslider.h>
#include <QtGui/qstyle.h>
#include <QtGui/qtoolbutton.h>
#include <QtGui/qcombobox.h>
PlayerControls::PlayerControls(QWidget *parent)
: QWidget(parent)
, playerState(QMediaPlayer::StoppedState)
, playerMuted(false)
, playButton(0)
, stopButton(0)
, nextButton(0)
, previousButton(0)
, muteButton(0)
, volumeSlider(0)
, rateBox(0)
{
playButton = new QToolButton(this);
playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
connect(playButton, SIGNAL(clicked()), this, SLOT(playClicked()));
stopButton = new QToolButton(this);
stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop));
stopButton->setEnabled(false);
connect(stopButton, SIGNAL(clicked()), this, SIGNAL(stop()));
nextButton = new QToolButton(this);
nextButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipForward));
connect(nextButton, SIGNAL(clicked()), this, SIGNAL(next()));
previousButton = new QToolButton(this);
previousButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipBackward));
connect(previousButton, SIGNAL(clicked()), this, SIGNAL(previous()));
muteButton = new QToolButton(this);
muteButton->setIcon(style()->standardIcon(QStyle::SP_MediaVolume));
connect(muteButton, SIGNAL(clicked()), this, SLOT(muteClicked()));
#ifndef Q_WS_MAEMO_5
volumeSlider = new QSlider(Qt::Horizontal, this);
volumeSlider->setRange(0, 100);
connect(volumeSlider, SIGNAL(sliderMoved(int)), this, SIGNAL(changeVolume(int)));
rateBox = new QComboBox(this);
rateBox->addItem("0.5x", QVariant(0.5));
rateBox->addItem("1.0x", QVariant(1.0));
rateBox->addItem("2.0x", QVariant(2.0));
rateBox->setCurrentIndex(1);
connect(rateBox, SIGNAL(activated(int)), SLOT(updateRate()));
#endif
QBoxLayout *layout = new QHBoxLayout;
layout->setMargin(0);
layout->addWidget(stopButton);
layout->addWidget(previousButton);
layout->addWidget(playButton);
layout->addWidget(nextButton);
layout->addWidget(muteButton);
if (volumeSlider)
layout->addWidget(volumeSlider);
if (rateBox)
layout->addWidget(rateBox);
setLayout(layout);
}
QMediaPlayer::State PlayerControls::state() const
{
return playerState;
}
void PlayerControls::setState(QMediaPlayer::State state)
{
if (state != playerState) {
playerState = state;
switch (state) {
case QMediaPlayer::StoppedState:
stopButton->setEnabled(false);
playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
break;
case QMediaPlayer::PlayingState:
stopButton->setEnabled(true);
playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));
break;
case QMediaPlayer::PausedState:
stopButton->setEnabled(true);
playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));
break;
}
}
}
int PlayerControls::volume() const
{
return volumeSlider ? volumeSlider->value() : 0;
}
void PlayerControls::setVolume(int volume)
{
if (volumeSlider)
volumeSlider->setValue(volume);
}
bool PlayerControls::isMuted() const
{
return playerMuted;
}
void PlayerControls::setMuted(bool muted)
{
if (muted != playerMuted) {
playerMuted = muted;
muteButton->setIcon(style()->standardIcon(muted
? QStyle::SP_MediaVolumeMuted
: QStyle::SP_MediaVolume));
}
}
void PlayerControls::playClicked()
{
switch (playerState) {
case QMediaPlayer::StoppedState:
case QMediaPlayer::PausedState:
emit play();
break;
case QMediaPlayer::PlayingState:
emit pause();
break;
}
}
void PlayerControls::muteClicked()
{
emit changeMuting(!playerMuted);
}
qreal PlayerControls::playbackRate() const
{
return rateBox->itemData(rateBox->currentIndex()).toDouble();
}
void PlayerControls::setPlaybackRate(float rate)
{
for (int i=0; i<rateBox->count(); i++) {
if (qFuzzyCompare(rate, float(rateBox->itemData(i).toDouble()))) {
rateBox->setCurrentIndex(i);
return;
}
}
rateBox->addItem( QString("%1x").arg(rate), QVariant(rate));
rateBox->setCurrentIndex(rateBox->count()-1);
}
void PlayerControls::updateRate()
{
emit changeRate(playbackRate());
}
|