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Diffstat (limited to 'examples/widgets/widgets/movie/movieplayer.cpp')
| -rw-r--r-- | examples/widgets/widgets/movie/movieplayer.cpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/examples/widgets/widgets/movie/movieplayer.cpp b/examples/widgets/widgets/movie/movieplayer.cpp new file mode 100644 index 0000000000..885fbdd0c6 --- /dev/null +++ b/examples/widgets/widgets/movie/movieplayer.cpp @@ -0,0 +1,210 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtWidgets> + +#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(); +} |