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Diffstat (limited to 'demos/multimedia/player/playercontrols.cpp')
| -rw-r--r-- | demos/multimedia/player/playercontrols.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/demos/multimedia/player/playercontrols.cpp b/demos/multimedia/player/playercontrols.cpp new file mode 100644 index 0000000..3798a71 --- /dev/null +++ b/demos/multimedia/player/playercontrols.cpp @@ -0,0 +1,205 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the demonstration applications of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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; + playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); + + connect(playButton, SIGNAL(clicked()), this, SLOT(playClicked())); + + stopButton = new QToolButton; + stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop)); + stopButton->setEnabled(false); + + connect(stopButton, SIGNAL(clicked()), this, SIGNAL(stop())); + + nextButton = new QToolButton; + nextButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipForward)); + + connect(nextButton, SIGNAL(clicked()), this, SIGNAL(next())); + + previousButton = new QToolButton; + previousButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipBackward)); + + connect(previousButton, SIGNAL(clicked()), this, SIGNAL(previous())); + + muteButton = new QToolButton; + muteButton->setIcon(style()->standardIcon(QStyle::SP_MediaVolume)); + + connect(muteButton, SIGNAL(clicked()), this, SLOT(muteClicked())); + + volumeSlider = new QSlider(Qt::Horizontal); + volumeSlider->setRange(0, 100); + + connect(volumeSlider, SIGNAL(sliderMoved(int)), this, SIGNAL(changeVolume(int))); + + rateBox = new QComboBox; + 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())); + + QBoxLayout *layout = new QHBoxLayout; + layout->setMargin(0); + layout->addWidget(stopButton); + layout->addWidget(previousButton); + layout->addWidget(playButton); + layout->addWidget(nextButton); + layout->addWidget(muteButton); + layout->addWidget(volumeSlider); + 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->value(); +} + +void PlayerControls::setVolume(int volume) +{ + 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()); +} |