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Diffstat (limited to 'src/multimedia/qmediaimageviewer.cpp')
| -rw-r--r-- | src/multimedia/qmediaimageviewer.cpp | 604 |
1 files changed, 0 insertions, 604 deletions
diff --git a/src/multimedia/qmediaimageviewer.cpp b/src/multimedia/qmediaimageviewer.cpp deleted file mode 100644 index 9a9a656..0000000 --- a/src/multimedia/qmediaimageviewer.cpp +++ /dev/null @@ -1,604 +0,0 @@ -/**************************************************************************** -** -** 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 Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** 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 1.1, 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. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qmediaimageviewer.h" - -#include "qmediaobject_p.h" -#include "qmediaimageviewerservice_p.h" - -#include <qmediaplaylist.h> -#include <qmediaplaylistsourcecontrol.h> -#include <qmediacontent.h> -#include <qmediaresource.h> -#include "qvideosurfaceoutput_p.h" - -#include <QtCore/qcoreevent.h> -#include <QtCore/qdatetime.h> -#include <QtCore/qpointer.h> -#include <QtCore/qtextstream.h> - -QT_BEGIN_NAMESPACE - -class QMediaImageViewerPrivate : public QMediaObjectPrivate -{ - Q_DECLARE_NON_CONST_PUBLIC(QMediaImageViewer) -public: - QMediaImageViewerPrivate(): - viewerControl(0), playlist(0), - state(QMediaImageViewer::StoppedState), timeout(3000), pauseTime(0) - { - } - - void _q_mediaStatusChanged(QMediaImageViewer::MediaStatus status); - void _q_playlistMediaChanged(const QMediaContent &content); - void _q_playlistDestroyed(); - - QMediaImageViewerControl *viewerControl; - QMediaPlaylist *playlist; - QPointer<QObject> videoOutput; - QVideoSurfaceOutput surfaceOutput; - QMediaImageViewer::State state; - int timeout; - int pauseTime; - QTime time; - QBasicTimer timer; - QMediaContent media; -}; - -void QMediaImageViewerPrivate::_q_mediaStatusChanged(QMediaImageViewer::MediaStatus status) -{ - switch (status) { - case QMediaImageViewer::NoMedia: - case QMediaImageViewer::LoadingMedia: - emit q_func()->mediaStatusChanged(status); - break; - case QMediaImageViewer::LoadedMedia: - if (state == QMediaImageViewer::PlayingState) { - time.start(); - timer.start(qMax(0, timeout), q_func()); - q_func()->addPropertyWatch("elapsedTime"); - } - emit q_func()->mediaStatusChanged(status); - emit q_func()->elapsedTimeChanged(0); - break; - case QMediaImageViewer::InvalidMedia: - emit q_func()->mediaStatusChanged(status); - - if (state == QMediaImageViewer::PlayingState) { - playlist->next(); - if (playlist->currentIndex() < 0) - emit q_func()->stateChanged(state = QMediaImageViewer::StoppedState); - } - break; - } -} - -void QMediaImageViewerPrivate::_q_playlistMediaChanged(const QMediaContent &content) -{ - media = content; - pauseTime = 0; - - viewerControl->showMedia(media); - - emit q_func()->mediaChanged(media); -} - -void QMediaImageViewerPrivate::_q_playlistDestroyed() -{ - playlist = 0; - timer.stop(); - - if (state != QMediaImageViewer::StoppedState) - emit q_func()->stateChanged(state = QMediaImageViewer::StoppedState); - - q_func()->setMedia(QMediaContent()); -} - -/*! - \class QMediaImageViewer - \brief The QMediaImageViewer class provides a means of viewing image media. - \inmodule QtMultimedia - \ingroup multimedia - \since 1.0 - - - QMediaImageViewer is used together with a media display object such as - QVideoWidget to present an image. A display object is attached to the - image viewer by means of the bind function. - - \snippet doc/src/snippets/multimedia-snippets/media.cpp Binding - - QMediaImageViewer can be paired with a QMediaPlaylist to create a slide - show of images. Constructing a QMediaPlaylist with a pointer to an - instance of QMediaImageViewer will attach it to the image viewer; - changing the playlist's selection will then change the media displayed - by the image viewer. With a playlist attached QMediaImageViewer's - play(), pause(), and stop() slots can be control the progression of the - playlist. The \l timeout property determines how long an image is - displayed for before progressing to the next in the playlist, and the - \l elapsedTime property holds how the duration the current image has - been displayed for. - - \snippet doc/src/snippets/multimedia-snippets/media.cpp Playlist -*/ - -/*! - \enum QMediaImageViewer::State - - Enumerates the possible control states an image viewer may be in. The - control state of an image viewer determines whether the image viewer is - automatically progressing through images in an attached playlist. - - \value StoppedState The image viewer is stopped, and will not automatically move to the next - image. The \l elapsedTime is fixed at 0. - \value PlayingState The slide show is playing, and will move to the next image when the - \l elapsedTime reaches the \l timeout. The \l elapsedTime is being incremented. - \value PausedState The image viewer is paused, and will not automatically move the to next - image. The \l elapsedTime is fixed at the time the image viewer was paused. -*/ - -/*! - \enum QMediaImageViewer::MediaStatus - - Enumerates the status of an image viewer's current media. - - \value NoMedia There is no current media. - \value LoadingMedia The image viewer is loading the current media. - \value LoadedMedia The image viewer has loaded the current media. - \value InvalidMedia The current media cannot be loaded. -*/ - -/*! - Constructs a new image viewer with the given \a parent. -*/ -QMediaImageViewer::QMediaImageViewer(QObject *parent) - : QMediaObject(*new QMediaImageViewerPrivate, parent, new QMediaImageViewerService) -{ - Q_D(QMediaImageViewer); - - d->viewerControl = qobject_cast<QMediaImageViewerControl*>( - d->service->requestControl(QMediaImageViewerControl_iid)); - - connect(d->viewerControl, SIGNAL(mediaStatusChanged(QMediaImageViewer::MediaStatus)), - this, SLOT(_q_mediaStatusChanged(QMediaImageViewer::MediaStatus))); -} - -/*! - Destroys an image viewer. -*/ -QMediaImageViewer::~QMediaImageViewer() -{ - Q_D(QMediaImageViewer); - - delete d->service; -} - -/*! - \property QMediaImageViewer::state - \brief the playlist control state of a slide show. - \since 1.0 -*/ - -QMediaImageViewer::State QMediaImageViewer::state() const -{ - return d_func()->state; -} - -/*! - \fn QMediaImageViewer::stateChanged(QMediaImageViewer::State state) - - Signals that the playlist control \a state of an image viewer has changed. - \since 1.0 -*/ - -/*! - \property QMediaImageViewer::mediaStatus - \brief the status of the current media. - \since 1.0 -*/ - -QMediaImageViewer::MediaStatus QMediaImageViewer::mediaStatus() const -{ - return d_func()->viewerControl->mediaStatus(); -} - -/*! - \fn QMediaImageViewer::mediaStatusChanged(QMediaImageViewer::MediaStatus status) - - Signals the the \a status of the current media has changed. - \since 1.0 -*/ - -/*! - \property QMediaImageViewer::media - \brief the media an image viewer is presenting. - \since 1.0 -*/ - -QMediaContent QMediaImageViewer::media() const -{ - Q_D(const QMediaImageViewer); - - return d->media; -} - -void QMediaImageViewer::setMedia(const QMediaContent &media) -{ - Q_D(QMediaImageViewer); - - if (d->playlist && d->playlist->currentMedia() != media) { - disconnect(d->playlist, SIGNAL(currentMediaChanged(QMediaContent)), - this, SLOT(_q_playlistMediaChanged(QMediaContent))); - disconnect(d->playlist, SIGNAL(destroyed()), this, SLOT(_q_playlistDestroyed())); - - d->playlist = 0; - } - - d->media = media; - - if (d->timer.isActive()) { - d->pauseTime = 0; - d->timer.stop(); - removePropertyWatch("elapsedTime"); - emit elapsedTimeChanged(0); - } - - if (d->state != QMediaImageViewer::StoppedState) - emit stateChanged(d->state = QMediaImageViewer::StoppedState); - - d->viewerControl->showMedia(d->media); - - emit mediaChanged(d->media); -} - -/*! - Use \a playlist as the source of images to be displayed in the viewer. - \since 1.0 -*/ -void QMediaImageViewer::setPlaylist(QMediaPlaylist *playlist) -{ - Q_D(QMediaImageViewer); - - if (d->playlist) { - disconnect(d->playlist, SIGNAL(currentMediaChanged(QMediaContent)), - this, SLOT(_q_playlistMediaChanged(QMediaContent))); - disconnect(d->playlist, SIGNAL(destroyed()), this, SLOT(_q_playlistDestroyed())); - - QMediaObject::unbind(d->playlist); - } - - d->playlist = playlist; - - if (d->playlist) { - connect(d->playlist, SIGNAL(currentMediaChanged(QMediaContent)), - this, SLOT(_q_playlistMediaChanged(QMediaContent))); - connect(d->playlist, SIGNAL(destroyed()), this, SLOT(_q_playlistDestroyed())); - - QMediaObject::bind(d->playlist); - - setMedia(d->playlist->currentMedia()); - } else { - setMedia(QMediaContent()); - } -} - -/*! - Returns the current playlist, or 0 if none. - \since 1.0 -*/ -QMediaPlaylist *QMediaImageViewer::playlist() const -{ - return d_func()->playlist; -} - -/*! - \fn QMediaImageViewer::mediaChanged(const QMediaContent &media) - - Signals that the \a media an image viewer is presenting has changed. - \since 1.0 -*/ - -/*! - \property QMediaImageViewer::timeout - \brief the amount of time in milliseconds an image is displayed for before moving to the next - image. - - The timeout only applies if the image viewer has a playlist attached and is in the PlayingState. - \since 1.0 -*/ - -int QMediaImageViewer::timeout() const -{ - return d_func()->timeout; -} - -void QMediaImageViewer::setTimeout(int timeout) -{ - Q_D(QMediaImageViewer); - - d->timeout = qMax(0, timeout); - - if (d->timer.isActive()) - d->timer.start(qMax(0, d->timeout - d->pauseTime - d->time.elapsed()), this); -} - -/*! - \property QMediaImageViewer::elapsedTime - \brief the amount of time in milliseconds that has elapsed since the current image was loaded. - - The elapsed time only increases while the image viewer is in the PlayingState. If stopped the - elapsed time will be reset to 0. - \since 1.0 -*/ - -int QMediaImageViewer::elapsedTime() const -{ - Q_D(const QMediaImageViewer); - - int elapsedTime = d->pauseTime; - - if (d->timer.isActive()) - elapsedTime += d->time.elapsed(); - - return elapsedTime; -} - -/*! - \fn QMediaImageViewer::elapsedTimeChanged(int time) - - Signals that the amount of \a time in milliseconds since the current - image was loaded has changed. - - This signal is emitted at a regular interval when the image viewer is - in the PlayingState and an image is loaded. The notification interval - is controlled by the QMediaObject::notifyInterval property. - - \since 1.0 - \sa timeout, QMediaObject::notifyInterval -*/ - -/*! - Sets a video \a widget as the current video output. - - This will unbind any previous video output bound with setVideoOutput(). - \since 1.1 -*/ - -void QMediaImageViewer::setVideoOutput(QVideoWidget *widget) -{ - Q_D(QMediaImageViewer); - - if (d->videoOutput) - unbind(d->videoOutput); - - // We don't know (in this library) that QVideoWidget inherits QObject - QObject *widgetObject = reinterpret_cast<QObject*>(widget); - - d->videoOutput = widgetObject && bind(widgetObject) ? widgetObject : 0; -} - -/*! - Sets a video \a item as the current video output. - - This will unbind any previous video output bound with setVideoOutput(). - \since 1.1 -*/ - -void QMediaImageViewer::setVideoOutput(QGraphicsVideoItem *item) -{ - Q_D(QMediaImageViewer); - - if (d->videoOutput) - unbind(d->videoOutput); - - // We don't know (in this library) that QGraphicsVideoItem (multiply) inherits QObject - // but QObject inheritance depends on QObject coming first, so try this out. - QObject *itemObject = reinterpret_cast<QObject*>(item); - - d->videoOutput = itemObject && bind(itemObject) ? itemObject : 0; -} - -/*! - Sets a video \a surface as the video output of a image viewer. - - If a video output has already been set on the image viewer the new surface - will replace it. - \since 1.2 -*/ - -void QMediaImageViewer::setVideoOutput(QAbstractVideoSurface *surface) -{ - Q_D(QMediaImageViewer); - - d->surfaceOutput.setVideoSurface(surface); - - if (d->videoOutput != &d->surfaceOutput) { - if (d->videoOutput) - unbind(d->videoOutput); - - d->videoOutput = bind(&d->surfaceOutput) ? &d->surfaceOutput : 0; - } -} - -/*! - \internal - \since 1.0 -*/ -bool QMediaImageViewer::bind(QObject *object) -{ - if (QMediaPlaylist *playlist = qobject_cast<QMediaPlaylist *>(object)) { - setPlaylist(playlist); - - return true; - } else { - return QMediaObject::bind(object); - } -} - -/*! - \internal - \since 1.0 - */ -void QMediaImageViewer::unbind(QObject *object) -{ - if (object == d_func()->playlist) - setPlaylist(0); - else - QMediaObject::unbind(object); -} - -/*! - Starts a slide show. - - If the playlist has no current media this will start at the beginning of the playlist, otherwise - it will resume from the current media. - - If no playlist is attached to an image viewer this will do nothing. - \since 1.0 -*/ -void QMediaImageViewer::play() -{ - Q_D(QMediaImageViewer); - - if (d->playlist && d->playlist->mediaCount() > 0 && d->state != PlayingState) { - d->state = PlayingState; - - switch (d->viewerControl->mediaStatus()) { - case NoMedia: - case InvalidMedia: - d->playlist->next(); - if (d->playlist->currentIndex() < 0) - d->state = StoppedState; - break; - case LoadingMedia: - break; - case LoadedMedia: - d->time.start(); - d->timer.start(qMax(0, d->timeout - d->pauseTime), this); - break; - } - - if (d->state == PlayingState) - emit stateChanged(d->state); - } -} - -/*! - Pauses a slide show. - - The current media and elapsed time are retained. If resumed, the current image will be - displayed for the remainder of the time out period before the next image is loaded. - \since 1.0 -*/ -void QMediaImageViewer::pause() -{ - Q_D(QMediaImageViewer); - - if (d->state == PlayingState) { - if (d->viewerControl->mediaStatus() == LoadedMedia) { - d->pauseTime += d->timeout - d->time.elapsed(); - d->timer.stop(); - removePropertyWatch("elapsedTime"); - } - - emit stateChanged(d->state = PausedState); - emit elapsedTimeChanged(d->pauseTime); - } -} - -/*! - Stops a slide show. - - The current media is retained, but the elapsed time is discarded. If resumed, the current - image will be displayed for the full time out period before the next image is loaded. - \since 1.0 -*/ -void QMediaImageViewer::stop() -{ - Q_D(QMediaImageViewer); - - switch (d->state) { - case PlayingState: - d->timer.stop(); - removePropertyWatch("elapsedTime"); - // fall through. - case PausedState: - d->pauseTime = 0; - d->state = QMediaImageViewer::StoppedState; - - emit stateChanged(d->state); - emit elapsedTimeChanged(0); - break; - case StoppedState: - break; - } -} - -/*! - \reimp - - \internal - \since 1.0 -*/ -void QMediaImageViewer::timerEvent(QTimerEvent *event) -{ - Q_D(QMediaImageViewer); - - if (event->timerId() == d->timer.timerId()) { - d->timer.stop(); - removePropertyWatch("elapsedTime"); - emit elapsedTimeChanged(d->pauseTime = d->timeout); - - d->playlist->next(); - - if (d->playlist->currentIndex() < 0) { - d->pauseTime = 0; - emit stateChanged(d->state = StoppedState); - emit elapsedTimeChanged(0); - } - } else { - QMediaObject::timerEvent(event); - } -} - -#include "moc_qmediaimageviewer.cpp" -QT_END_NAMESPACE - |