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Diffstat (limited to 'examples/widgets/movie/movieplayer.cpp')
| -rw-r--r-- | examples/widgets/movie/movieplayer.cpp | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/examples/widgets/movie/movieplayer.cpp b/examples/widgets/movie/movieplayer.cpp new file mode 100644 index 0000000..1ffc233 --- /dev/null +++ b/examples/widgets/movie/movieplayer.cpp @@ -0,0 +1,211 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples 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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> + +#include "movieplayer.h" + +MoviePlayer::MoviePlayer(QWidget *parent) + : QWidget(parent) +{ + movie = new QMovie(this); + movie->setCacheMode(QMovie::CacheAll); + + movieLabel = new QLabel(tr("No movie loaded")); + movieLabel->setAlignment(Qt::AlignCenter); + movieLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored); + movieLabel->setBackgroundRole(QPalette::Dark); + movieLabel->setAutoFillBackground(true); + + currentMovieDirectory = "movies"; + + createControls(); + createButtons(); + + connect(movie, SIGNAL(frameChanged(int)), this, SLOT(updateFrameSlider())); + connect(movie, SIGNAL(stateChanged(QMovie::MovieState)), + this, SLOT(updateButtons())); + connect(fitCheckBox, SIGNAL(clicked()), this, SLOT(fitToWindow())); + connect(frameSlider, SIGNAL(valueChanged(int)), this, SLOT(goToFrame(int))); + connect(speedSpinBox, SIGNAL(valueChanged(int)), + movie, SLOT(setSpeed(int))); + + mainLayout = new QVBoxLayout; + mainLayout->addWidget(movieLabel); + mainLayout->addLayout(controlsLayout); + mainLayout->addLayout(buttonsLayout); + setLayout(mainLayout); + + updateFrameSlider(); + updateButtons(); + + setWindowTitle(tr("Movie Player")); + resize(400, 400); +} + +void MoviePlayer::open() +{ + QString fileName = QFileDialog::getOpenFileName(this, tr("Open a Movie"), + currentMovieDirectory); + if (!fileName.isEmpty()) + openFile(fileName); +} + +void MoviePlayer::openFile(const QString &fileName) +{ + currentMovieDirectory = QFileInfo(fileName).path(); + + movie->stop(); + movieLabel->setMovie(movie); + movie->setFileName(fileName); + movie->start(); + + updateFrameSlider(); + updateButtons(); +} + +void MoviePlayer::goToFrame(int frame) +{ + movie->jumpToFrame(frame); +} + +void MoviePlayer::fitToWindow() +{ + movieLabel->setScaledContents(fitCheckBox->isChecked()); +} + +void MoviePlayer::updateFrameSlider() +{ + bool hasFrames = (movie->currentFrameNumber() >= 0); + + if (hasFrames) { + if (movie->frameCount() > 0) { + frameSlider->setMaximum(movie->frameCount() - 1); + } else { + if (movie->currentFrameNumber() > frameSlider->maximum()) + frameSlider->setMaximum(movie->currentFrameNumber()); + } + frameSlider->setValue(movie->currentFrameNumber()); + } else { + frameSlider->setMaximum(0); + } + frameLabel->setEnabled(hasFrames); + frameSlider->setEnabled(hasFrames); +} + +void MoviePlayer::updateButtons() +{ + playButton->setEnabled(movie->isValid() && movie->frameCount() != 1 + && movie->state() == QMovie::NotRunning); + pauseButton->setEnabled(movie->state() != QMovie::NotRunning); + pauseButton->setChecked(movie->state() == QMovie::Paused); + stopButton->setEnabled(movie->state() != QMovie::NotRunning); +} + +void MoviePlayer::createControls() +{ + fitCheckBox = new QCheckBox(tr("Fit to Window")); + + frameLabel = new QLabel(tr("Current frame:")); + + frameSlider = new QSlider(Qt::Horizontal); + frameSlider->setTickPosition(QSlider::TicksBelow); + frameSlider->setTickInterval(10); + + speedLabel = new QLabel(tr("Speed:")); + + speedSpinBox = new QSpinBox; + speedSpinBox->setRange(1, 9999); + speedSpinBox->setValue(100); + speedSpinBox->setSuffix(tr("%")); + + controlsLayout = new QGridLayout; + controlsLayout->addWidget(fitCheckBox, 0, 0, 1, 2); + controlsLayout->addWidget(frameLabel, 1, 0); + controlsLayout->addWidget(frameSlider, 1, 1, 1, 2); + controlsLayout->addWidget(speedLabel, 2, 0); + controlsLayout->addWidget(speedSpinBox, 2, 1); +} + +void MoviePlayer::createButtons() +{ + QSize iconSize(36, 36); + + openButton = new QToolButton; + openButton->setIcon(style()->standardIcon(QStyle::SP_DialogOpenButton)); + openButton->setIconSize(iconSize); + openButton->setToolTip(tr("Open File")); + connect(openButton, SIGNAL(clicked()), this, SLOT(open())); + + playButton = new QToolButton; + playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); + playButton->setIconSize(iconSize); + playButton->setToolTip(tr("Play")); + connect(playButton, SIGNAL(clicked()), movie, SLOT(start())); + + pauseButton = new QToolButton; + pauseButton->setCheckable(true); + pauseButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause)); + pauseButton->setIconSize(iconSize); + pauseButton->setToolTip(tr("Pause")); + connect(pauseButton, SIGNAL(clicked(bool)), movie, SLOT(setPaused(bool))); + + stopButton = new QToolButton; + stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop)); + stopButton->setIconSize(iconSize); + stopButton->setToolTip(tr("Stop")); + connect(stopButton, SIGNAL(clicked()), movie, SLOT(stop())); + + quitButton = new QToolButton; + quitButton->setIcon(style()->standardIcon(QStyle::SP_DialogCloseButton)); + quitButton->setIconSize(iconSize); + quitButton->setToolTip(tr("Quit")); + connect(quitButton, SIGNAL(clicked()), this, SLOT(close())); + + buttonsLayout = new QHBoxLayout; + buttonsLayout->addStretch(); + buttonsLayout->addWidget(openButton); + buttonsLayout->addWidget(playButton); + buttonsLayout->addWidget(pauseButton); + buttonsLayout->addWidget(stopButton); + buttonsLayout->addWidget(quitButton); + buttonsLayout->addStretch(); +} |