diff -r 000000000000 -r 876b1a06bc25 examples/slideshow/slideshow.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/examples/slideshow/slideshow.cpp Wed Aug 25 15:49:42 2010 +0300 @@ -0,0 +1,263 @@ +/**************************************************************************** +** +** 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 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 +#include +#include + +#include + +SlideShow::SlideShow(QWidget *parent) + : QWidget(parent) + , imageViewer(0) + , playlist(0) + , statusLabel(0) + , countdownLabel(0) + , playButton(0) + , stopButton(0) + , viewerLayout(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())); + + connect(playlist, SIGNAL(loaded()), this, SLOT(playlistLoaded())); + connect(playlist, SIGNAL(loadFailed()), this, SLOT(playlistLoadFailed())); + + QVideoWidget *videoWidget = new QVideoWidget; + imageViewer->bind(videoWidget); + + statusLabel = new QLabel(tr("%1 Images").arg(0)); + statusLabel->setAlignment(Qt::AlignCenter); + + viewerLayout = new QStackedLayout; + viewerLayout->setStackingMode(QStackedLayout::StackAll); + viewerLayout->addWidget(videoWidget); + viewerLayout->addWidget(statusLabel); + + statusLabel = new QLabel(tr("%1 Images").arg(0)); + statusLabel->setAlignment(Qt::AlignCenter); + + viewerLayout = new QStackedLayout; + viewerLayout->setStackingMode(QStackedLayout::StackAll); + viewerLayout->addWidget(videoWidget); + viewerLayout->addWidget(statusLabel); + + QMenu *openMenu = new QMenu(this); + openMenu->addAction(tr("Directory..."), this, SLOT(openDirectory())); + openMenu->addAction(tr("Playlist..."), this, SLOT(openPlaylist())); + + QToolButton *openButton = new QToolButton; + openButton->setIcon(style()->standardIcon(QStyle::SP_DialogOpenButton)); + openButton->setMenu(openMenu); + openButton->setPopupMode(QToolButton::InstantPopup); + + playButton = new QToolButton; + playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); + playButton->setEnabled(false); + + connect(playButton, SIGNAL(clicked()), this, SLOT(play())); + connect(this, SIGNAL(enableButtons(bool)), playButton, SLOT(setEnabled(bool))); + + stopButton = new QToolButton; + stopButton->setIcon(style()->standardIcon(QStyle::SP_MediaStop)); + stopButton->setEnabled(false); + + connect(stopButton, SIGNAL(clicked()), imageViewer, SLOT(stop())); + + QAbstractButton *nextButton = new QToolButton; + nextButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipForward)); + nextButton->setEnabled(false); + + connect(nextButton, SIGNAL(clicked()), playlist, SLOT(next())); + connect(this, SIGNAL(enableButtons(bool)), nextButton, SLOT(setEnabled(bool))); + + QAbstractButton *previousButton = new QToolButton; + previousButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipBackward)); + previousButton->setEnabled(false); + + connect(previousButton, SIGNAL(clicked()), playlist, SLOT(previous())); + connect(this, SIGNAL(enableButtons(bool)), previousButton, SLOT(setEnabled(bool))); + + countdownLabel = new QLabel; + + QBoxLayout *controlLayout = new QHBoxLayout; + controlLayout->setMargin(0); + controlLayout->addWidget(openButton); + controlLayout->addStretch(1); + controlLayout->addWidget(previousButton); + controlLayout->addWidget(stopButton); + controlLayout->addWidget(playButton); + controlLayout->addWidget(nextButton); + controlLayout->addStretch(1); + controlLayout->addWidget(countdownLabel); + + QBoxLayout *layout = new QVBoxLayout; + layout->addLayout(viewerLayout); + layout->addLayout(controlLayout); + + setLayout(layout); + +} + +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()); + + emit enableButtons(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: + stopButton->setEnabled(false); + playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPlay)); + break; + case QMediaImageViewer::PlayingState: + stopButton->setEnabled(true); + playButton->setIcon(style()->standardIcon(QStyle::SP_MediaPause)); + break; + case QMediaImageViewer::PausedState: + stopButton->setEnabled(true); + playButton->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())); + viewerLayout->setCurrentIndex(1); + break; + case QMediaImageViewer::LoadingMedia: + statusLabel->setText(tr("Image %1 of %2\nLoading...") + .arg(playlist->currentIndex()) + .arg(playlist->mediaCount())); + viewerLayout->setCurrentIndex(1); + break; + case QMediaImageViewer::LoadedMedia: + statusLabel->setText(tr("Image %1 of %2") + .arg(playlist->currentIndex()) + .arg(playlist->mediaCount())); + viewerLayout->setCurrentIndex(0); + break; + case QMediaImageViewer::InvalidMedia: + statusLabel->setText(tr("Image %1 of %2\nInvalid") + .arg(playlist->currentIndex()) + .arg(playlist->mediaCount())); + viewerLayout->setCurrentIndex(1); + break; + default: + break; + } +} + +void SlideShow::playlistLoaded() +{ + statusChanged(imageViewer->mediaStatus()); + + emit enableButtons(playlist->mediaCount() > 0); +} + +void SlideShow::playlistLoadFailed() +{ + statusLabel->setText(playlist->errorString()); + viewerLayout->setCurrentIndex(1); + + emit enableButtons(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'))); +}