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Diffstat (limited to 'examples/slideshow/slideshow.cpp')
| -rw-r--r-- | examples/slideshow/slideshow.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/examples/slideshow/slideshow.cpp b/examples/slideshow/slideshow.cpp new file mode 100644 index 000000000..5c877de66 --- /dev/null +++ b/examples/slideshow/slideshow.cpp @@ -0,0 +1,215 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Mobility Components. +** +** $QT_BEGIN_LICENSE:BSD$ +** 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 "slideshow.h" + +#include <qmediaservice.h> +#include <qmediaplaylist.h> +#include <qvideowidget.h> + +#include <QtGui> + +SlideShow::SlideShow(QWidget *parent) + : QMainWindow(parent) + , imageViewer(0) + , playlist(0) + , statusLabel(0) + , countdownLabel(0) + , playAction(0) + , stopAction(0) +{ + imageViewer = new QMediaImageViewer(this); + + connect(imageViewer, SIGNAL(stateChanged(QMediaImageViewer::State)), + this, SLOT(stateChanged(QMediaImageViewer::State))); + connect(imageViewer, SIGNAL(mediaStatusChanged(QMediaImageViewer::MediaStatus)), + this, SLOT(statusChanged(QMediaImageViewer::MediaStatus))); + connect(imageViewer, SIGNAL(elapsedTimeChanged(int)), this, SLOT(elapsedTimeChanged(int))); + + playlist = new QMediaPlaylist; + imageViewer->bind(playlist); + + connect(playlist, SIGNAL(loaded()), this, SLOT(playlistLoaded())); + connect(playlist, SIGNAL(loadFailed()), this, SLOT(playlistLoadFailed())); + + QVideoWidget *videoWidget = new QVideoWidget; + imageViewer->setVideoOutput(videoWidget); + + menuBar()->addAction(tr("Open Directory..."), this, SLOT(openDirectory())); + menuBar()->addAction(tr("Open Playlist..."), this, SLOT(openPlaylist())); + + toolBar = new QToolBar; + toolBar->setMovable(false); + toolBar->setFloatable(false); + toolBar->setEnabled(false); + + toolBar->addAction( + style()->standardIcon(QStyle::SP_MediaSkipBackward), + tr("Previous"), + playlist, + SLOT(previous())); + stopAction = toolBar->addAction( + style()->standardIcon(QStyle::SP_MediaStop), tr("Stop"), imageViewer, SLOT(stop())); + playAction = toolBar->addAction( + style()->standardIcon(QStyle::SP_MediaPlay), tr("Play"), this, SLOT(play())); + toolBar->addAction( + style()->standardIcon(QStyle::SP_MediaSkipForward), tr("Next"), playlist, SLOT(next())); + + addToolBar(Qt::BottomToolBarArea, toolBar); + + statusLabel = new QLabel(tr("%1 Images").arg(0)); + statusLabel->setAlignment(Qt::AlignCenter); + + countdownLabel = new QLabel; + countdownLabel->setAlignment(Qt::AlignRight); + + statusBar()->addPermanentWidget(statusLabel, 1); + statusBar()->addPermanentWidget(countdownLabel); + + setCentralWidget(videoWidget); +} + +void SlideShow::openPlaylist() +{ + QString path = QFileDialog::getOpenFileName(this); + + if (!path.isEmpty()) { + playlist->clear(); + playlist->load(QUrl::fromLocalFile(path)); + } +} + +void SlideShow::openDirectory() +{ + QString path = QFileDialog::getExistingDirectory(this); + + if (!path.isEmpty()) { + playlist->clear(); + + QDir dir(path); + + foreach (const QString &fileName, dir.entryList(QDir::Files)) + playlist->addMedia(QUrl::fromLocalFile(dir.absoluteFilePath(fileName))); + + statusChanged(imageViewer->mediaStatus()); + + toolBar->setEnabled(playlist->mediaCount() > 0); + } +} + +void SlideShow::play() +{ + switch (imageViewer->state()) { + case QMediaImageViewer::StoppedState: + case QMediaImageViewer::PausedState: + imageViewer->play(); + break; + case QMediaImageViewer::PlayingState: + imageViewer->pause(); + break; + } +} + +void SlideShow::stateChanged(QMediaImageViewer::State state) +{ + switch (state) { + case QMediaImageViewer::StoppedState: + stopAction->setEnabled(false); + playAction->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); + break; + case QMediaImageViewer::PlayingState: + stopAction->setEnabled(true); + playAction->setIcon(style()->standardIcon(QStyle::SP_MediaPause)); + break; + case QMediaImageViewer::PausedState: + stopAction->setEnabled(true); + playAction->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); + break; + } +} + +void SlideShow::statusChanged(QMediaImageViewer::MediaStatus status) +{ + switch (status) { + case QMediaImageViewer::NoMedia: + statusLabel->setText(tr("%1 Images").arg(playlist->mediaCount())); + break; + case QMediaImageViewer::LoadingMedia: + statusLabel->setText(tr("Image %1 of %2\nLoading...") + .arg(playlist->currentIndex()) + .arg(playlist->mediaCount())); + break; + case QMediaImageViewer::LoadedMedia: + statusLabel->setText(tr("Image %1 of %2") + .arg(playlist->currentIndex()) + .arg(playlist->mediaCount())); + break; + case QMediaImageViewer::InvalidMedia: + statusLabel->setText(tr("Image %1 of %2\nInvalid") + .arg(playlist->currentIndex()) + .arg(playlist->mediaCount())); + break; + default: + break; + } +} + +void SlideShow::playlistLoaded() +{ + statusChanged(imageViewer->mediaStatus()); + + toolBar->setEnabled(playlist->mediaCount() > 0); +} + +void SlideShow::playlistLoadFailed() +{ + statusLabel->setText(playlist->errorString()); + + toolBar->setEnabled(false); +} + +void SlideShow::elapsedTimeChanged(int time) +{ + const int remaining = (imageViewer->timeout() - time) / 1000; + + countdownLabel->setText(tr("%1:%2") + .arg(remaining / 60, 2, 10, QLatin1Char('0')) + .arg(remaining % 60, 2, 10, QLatin1Char('0'))); +} |