/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the examples of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#include <QtGui>+
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+
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#include "movieplayer.h"+
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+
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MoviePlayer::MoviePlayer(QWidget *parent)+
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    : QWidget(parent)+
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{+
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    movie = new QMovie(this);+
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    movie->setCacheMode(QMovie::CacheAll);+
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+
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    movieLabel = new QLabel(tr("No movie loaded"));+
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    movieLabel->setAlignment(Qt::AlignCenter);+
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    movieLabel->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Ignored);+
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    movieLabel->setBackgroundRole(QPalette::Dark);+
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    movieLabel->setAutoFillBackground(true);+
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+
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    currentMovieDirectory = "movies";+
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+
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    createControls();+
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    createButtons();+
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+
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    connect(movie, SIGNAL(frameChanged(int)), this, SLOT(updateFrameSlider()));+
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    connect(movie, SIGNAL(stateChanged(QMovie::MovieState)),+
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            this, SLOT(updateButtons()));+
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    connect(fitCheckBox, SIGNAL(clicked()), this, SLOT(fitToWindow()));+
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    connect(frameSlider, SIGNAL(valueChanged(int)), this, SLOT(goToFrame(int)));+
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    connect(speedSpinBox, SIGNAL(valueChanged(int)),+
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            movie, SLOT(setSpeed(int)));+
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+
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    mainLayout = new QVBoxLayout;+
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    mainLayout->addWidget(movieLabel);+
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    mainLayout->addLayout(controlsLayout);+
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    mainLayout->addLayout(buttonsLayout);+
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    setLayout(mainLayout);+
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+
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    updateFrameSlider();+
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    updateButtons();+
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+
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    setWindowTitle(tr("Movie Player"));+
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    resize(400, 400);+
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}+
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+
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void MoviePlayer::open()+
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{+
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    QString fileName = QFileDialog::getOpenFileName(this, tr("Open a Movie"),+
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                               currentMovieDirectory);+
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    if (!fileName.isEmpty())+
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        openFile(fileName);+
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}+
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+
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void MoviePlayer::openFile(const QString &fileName)+
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{+
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    currentMovieDirectory = QFileInfo(fileName).path();+
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+
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    movie->stop();+
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    movieLabel->setMovie(movie);+
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    movie->setFileName(fileName);+
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    movie->start();+
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+
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    updateFrameSlider();+
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    updateButtons();+
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}+
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+
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void MoviePlayer::goToFrame(int frame)+
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{+
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    movie->jumpToFrame(frame);+
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}+
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+
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void MoviePlayer::fitToWindow()+
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{+
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    movieLabel->setScaledContents(fitCheckBox->isChecked());+
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}+
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+
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void MoviePlayer::updateFrameSlider()+
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{+
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    bool hasFrames = (movie->currentFrameNumber() >= 0);+
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+
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    if (hasFrames) {+
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        if (movie->frameCount() > 0) {+
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            frameSlider->setMaximum(movie->frameCount() - 1);+
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        } else {+
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            if (movie->currentFrameNumber() > frameSlider->maximum())+
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                frameSlider->setMaximum(movie->currentFrameNumber());+
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        }+
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        frameSlider->setValue(movie->currentFrameNumber());+
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    } else {+
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        frameSlider->setMaximum(0);+
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    }+
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    frameLabel->setEnabled(hasFrames);+
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    frameSlider->setEnabled(hasFrames);+
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}+
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+
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void MoviePlayer::updateButtons()+
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{+
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    playButton->setEnabled(movie->isValid() && movie->frameCount() != 1+
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                           && movie->state() == QMovie::NotRunning);+
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    pauseButton->setEnabled(movie->state() != QMovie::NotRunning);+
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    pauseButton->setChecked(movie->state() == QMovie::Paused);+
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    stopButton->setEnabled(movie->state() != QMovie::NotRunning);+
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}+
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+
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void MoviePlayer::createControls()+
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{+
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    fitCheckBox = new QCheckBox(tr("Fit to Window"));+
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+
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    frameLabel = new QLabel(tr("Current frame:"));+
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+
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    frameSlider = new QSlider(Qt::Horizontal);+
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    frameSlider->setTickPosition(QSlider::TicksBelow);+
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    frameSlider->setTickInterval(10);+
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+
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    speedLabel = new QLabel(tr("Speed:"));+
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+
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    speedSpinBox = new QSpinBox;+
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    speedSpinBox->setRange(1, 9999);+
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    speedSpinBox->setValue(100);+
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    speedSpinBox->setSuffix(tr("%"));+
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+
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    controlsLayout = new QGridLayout;+
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    controlsLayout->addWidget(fitCheckBox, 0, 0, 1, 2);+
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    controlsLayout->addWidget(frameLabel, 1, 0);+
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    controlsLayout->addWidget(frameSlider, 1, 1, 1, 2);+
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    controlsLayout->addWidget(speedLabel, 2, 0);+
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    controlsLayout->addWidget(speedSpinBox, 2, 1);+
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}+
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+
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void MoviePlayer::createButtons()+
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{+
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    QSize iconSize(36, 36);+
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+
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    openButton = new QToolButton;+
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    openButton->setIcon(style()->standardIcon(QStyle::SP_DialogOpenButton));+
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    openButton->setIconSize(iconSize);+
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    openButton->setToolTip(tr("Open File"));+
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    connect(openButton, SIGNAL(clicked()), this, SLOT(open()));+
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+
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    playButton = new QToolButton;+
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    playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay));+
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    playButton->setIconSize(iconSize);+
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    playButton->setToolTip(tr("Play"));+
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    connect(playButton, SIGNAL(clicked()), movie, SLOT(start()));+
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+
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    pauseButton = new QToolButton;+
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    pauseButton->setCheckable(true);+
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    pauseButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause));+
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    pauseButton->setIconSize(iconSize);+
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    pauseButton->setToolTip(tr("Pause"));+
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    connect(pauseButton, SIGNAL(clicked(bool)), movie, SLOT(setPaused(bool)));+
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+
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    stopButton = new QToolButton;+
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    stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop));+
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    stopButton->setIconSize(iconSize);+
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    stopButton->setToolTip(tr("Stop"));+
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    connect(stopButton, SIGNAL(clicked()), movie, SLOT(stop()));+
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+
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    quitButton = new QToolButton;+
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    quitButton->setIcon(style()->standardIcon(QStyle::SP_DialogCloseButton));+
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    quitButton->setIconSize(iconSize);+
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    quitButton->setToolTip(tr("Quit"));+
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    connect(quitButton, SIGNAL(clicked()), this, SLOT(close()));+
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+
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    buttonsLayout = new QHBoxLayout;+
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    buttonsLayout->addStretch();+
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    buttonsLayout->addWidget(openButton);+
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    buttonsLayout->addWidget(playButton);+
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    buttonsLayout->addWidget(pauseButton);+
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    buttonsLayout->addWidget(stopButton);+
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    buttonsLayout->addWidget(quitButton);+
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    buttonsLayout->addStretch();+
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}+
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