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Diffstat (limited to 'src/imports/multimedia/qdeclarativeplaylist.cpp')
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diff --git a/src/imports/multimedia/qdeclarativeplaylist.cpp b/src/imports/multimedia/qdeclarativeplaylist.cpp new file mode 100644 index 000000000..bb785aa98 --- /dev/null +++ b/src/imports/multimedia/qdeclarativeplaylist.cpp @@ -0,0 +1,583 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qdeclarativeplaylist_p.h" + +QT_BEGIN_NAMESPACE + +/*! + \qmltype PlaylistItem + \instantiates QDeclarativePlaylistItem + \since 5.6 + + \inqmlmodule QtMultimedia + \ingroup multimedia_qml + \ingroup multimedia_audio_qml + \ingroup multimedia_video_qml + \brief Defines an item in a Playlist. + + \sa Playlist +*/ + +/*! + \qmlproperty url QtMultimedia::PlaylistItem::source + + This property holds the source URL of the item. + + \sa Playlist +*/ +QDeclarativePlaylistItem::QDeclarativePlaylistItem(QObject *parent) + : QObject(parent) +{ +} + +QUrl QDeclarativePlaylistItem::source() const +{ + return m_source; +} + +void QDeclarativePlaylistItem::setSource(const QUrl &source) +{ + m_source = source; +} + +/*! + \qmltype Playlist + \instantiates QDeclarativePlaylist + \since 5.6 + \brief For specifying a list of media to be played. + + \inqmlmodule QtMultimedia + \ingroup multimedia_qml + \ingroup multimedia_audio_qml + \ingroup multimedia_video_qml + + The Playlist type provides a way to play a list of media with the MediaPlayer, Audio and Video + types. It can be used as a data source for view elements (such as ListView) and other elements + that interact with model data (such as Repeater). When used as a data model, each playlist + item's source URL can be accessed using the \c source role. + + \qml + import QtQuick 2.0 + import QtMultimedia 5.6 + + Item { + width: 400; + height: 300; + + Audio { + id: player; + playlist: Playlist { + id: playlist + PlaylistItem { source: "song1.ogg"; } + PlaylistItem { source: "song2.ogg"; } + PlaylistItem { source: "song3.ogg"; } + } + } + + ListView { + model: playlist; + delegate: Text { + font.pixelSize: 16; + text: source; + } + } + + MouseArea { + anchors.fill: parent; + onPressed: { + if (player.playbackState != Audio.PlayingState) { + player.play(); + } else { + player.pause(); + } + } + } + } + \endqml + + \sa MediaPlayer, Audio, Video +*/ + +void QDeclarativePlaylist::_q_mediaAboutToBeInserted(int start, int end) +{ + emit itemAboutToBeInserted(start, end); + + beginInsertRows(QModelIndex(), start, end); +} + +void QDeclarativePlaylist::_q_mediaInserted(int start, int end) +{ + endInsertRows(); + + emit itemCountChanged(); + emit itemInserted(start, end); +} + +void QDeclarativePlaylist::_q_mediaAboutToBeRemoved(int start, int end) +{ + emit itemAboutToBeRemoved(start, end); + + beginRemoveRows(QModelIndex(), start, end); +} + +void QDeclarativePlaylist::_q_mediaRemoved(int start, int end) +{ + endRemoveRows(); + + emit itemCountChanged(); + emit itemRemoved(start, end); +} + +void QDeclarativePlaylist::_q_mediaChanged(int start, int end) +{ + emit dataChanged(createIndex(start, 0), createIndex(end, 0)); + emit itemChanged(start, end); +} + +void QDeclarativePlaylist::_q_loadFailed() +{ + m_error = m_playlist->error(); + m_errorString = m_playlist->errorString(); + + emit error(Error(m_error), m_errorString); + emit errorChanged(); + emit loadFailed(); +} + +QDeclarativePlaylist::QDeclarativePlaylist(QObject *parent) + : QAbstractListModel(parent) + , m_playlist(0) + , m_error(QMediaPlaylist::NoError) + , m_readOnly(false) +{ +} + +QDeclarativePlaylist::~QDeclarativePlaylist() +{ + delete m_playlist; +} + +/*! + \qmlproperty enumeration QtMultimedia::Playlist::playbackMode + + This property holds the order in which items in the playlist are played. + + \table + \header \li Value \li Description + \row \li CurrentItemOnce + \li The current item is played only once. + \row \li CurrentItemInLoop + \li The current item is played repeatedly in a loop. + \row \li Sequential + \li Playback starts from the current and moves through each successive item until the last + is reached and then stops. The next item is a null item when the last one is currently + playing. + \row \li Loop + \li Playback restarts at the first item after the last has finished playing. + \row \li Random + \li Play items in random order. + \endtable + */ +QDeclarativePlaylist::PlaybackMode QDeclarativePlaylist::playbackMode() const +{ + return PlaybackMode(m_playlist->playbackMode()); +} + +void QDeclarativePlaylist::setPlaybackMode(PlaybackMode mode) +{ + if (playbackMode() == mode) + return; + + m_playlist->setPlaybackMode(QMediaPlaylist::PlaybackMode(mode)); +} + +/*! + \qmlproperty url QtMultimedia::Playlist::currentItemsource + + This property holds the source URL of the current item in the playlist. + */ +QUrl QDeclarativePlaylist::currentItemSource() const +{ + return m_playlist->currentMedia().canonicalUrl(); +} + +/*! + \qmlproperty int QtMultimedia::Playlist::currentIndex + + This property holds the position of the current item in the playlist. + */ +int QDeclarativePlaylist::currentIndex() const +{ + return m_playlist->currentIndex(); +} + +void QDeclarativePlaylist::setCurrentIndex(int index) +{ + if (currentIndex() == index) + return; + + m_playlist->setCurrentIndex(index); +} + +/*! + \qmlproperty int QtMultimedia::Playlist::itemCount + + This property holds the number of items in the playlist. + */ +int QDeclarativePlaylist::itemCount() const +{ + return m_playlist->mediaCount(); +} + +/*! + \qmlproperty bool QtMultimedia::Playlist::readOnly + + This property indicates if the playlist can be modified. + */ +bool QDeclarativePlaylist::readOnly() const +{ + // There's no signal to tell whether or not the read only state changed, so we consider it fixed + // after its initial retrieval in componentComplete(). + return m_readOnly; +} + +/*! + \qmlproperty enumeration QtMultimedia::Playlist::error + + This property holds the error condition of the playlist. + + \table + \header \li Value \li Description + \row \li NoError + \li No errors + \row \li FormatError + \li Format error. + \row \li FormatNotSupportedError + \li Format not supported. + \row \li NetworkError + \li Network error. + \row \li AccessDeniedError + \li Access denied error. + \endtable + */ +QDeclarativePlaylist::Error QDeclarativePlaylist::error() const +{ + return Error(m_error); +} + +/*! + \qmlproperty string QtMultimedia::Playlist::errorString + + This property holds a string describing the current error condition of the playlist. +*/ +QString QDeclarativePlaylist::errorString() const +{ + return m_errorString; +} + +/*! + \qmlmethod url QtMultimedia::Playlist::itemSource(index) + + Returns the source URL of the item at the given \a index in the playlist. +*/ +QUrl QDeclarativePlaylist::itemSource(int index) +{ + return m_playlist->media(index).canonicalUrl(); +} + +/*! + \qmlmethod int QtMultimedia::Playlist::nextIndex(steps) + + Returns the index of the item in the playlist which would be current after calling next() + \a steps times. + + Returned value depends on the size of the playlist, the current position and the playback mode. + + \sa playbackMode, previousIndex() +*/ +int QDeclarativePlaylist::nextIndex(int steps) +{ + return m_playlist->nextIndex(steps); +} + +/*! + \qmlmethod int QtMultimedia::Playlist::previousIndex(steps) + + Returns the index of the item in the playlist which would be current after calling previous() + \a steps times. + + Returned value depends on the size of the playlist, the current position and the playback mode. + + \sa playbackMode, nextIndex() +*/ +int QDeclarativePlaylist::previousIndex(int steps) +{ + return m_playlist->previousIndex(steps); +} + +/*! + \qmlmethod QtMultimedia::Playlist::next() + + Advances to the next item in the playlist. +*/ +void QDeclarativePlaylist::next() +{ + m_playlist->next(); +} + +/*! + \qmlmethod QtMultimedia::Playlist::previous() + + Returns to the previous item in the playlist. +*/ +void QDeclarativePlaylist::previous() +{ + m_playlist->previous(); +} + +/*! + \qmlmethod QtMultimedia::Playlist::shuffle() + + Shuffles items in the playlist. +*/ +void QDeclarativePlaylist::shuffle() +{ + m_playlist->shuffle(); +} + +/*! + \qmlmethod QtMultimedia::Playlist::load(location, format) + + Loads a playlist from the given \a location. If \a format is specified, it is used, otherwise + the format is guessed from the location name and the data. + + New items are appended to the playlist. + + \c onloaded() is emitted if the playlist loads successfully, otherwise \c onLoadFailed() is + emitted with \l error and \l errorString defined accordingly. +*/ +void QDeclarativePlaylist::load(const QUrl &location, const QString &format) +{ + m_error = QMediaPlaylist::NoError; + m_errorString = QString(); + emit errorChanged(); + m_playlist->load(location, format.toLatin1().constData()); +} + +/*! + \qmlmethod bool QtMultimedia::Playlist::save(location, format) + + Saves the playlist to the given \a location. If \a format is specified, it is used, otherwise + the format is guessed from the location name. + + Returns true if the playlist is saved successfully. +*/ +bool QDeclarativePlaylist::save(const QUrl &location, const QString &format) +{ + return m_playlist->save(location, format.toLatin1().constData()); +} + +/*! + \qmlmethod bool QtMultimedia::Playlist::addItem(source) + + Appends the \a source URL to the playlist. + + Returns true if the \a source is added successfully. +*/ +bool QDeclarativePlaylist::addItem(const QUrl &source) +{ + return m_playlist->addMedia(QMediaContent(source)); +} + +/*! + \qmlmethod bool QtMultimedia::Playlist::insertItem(index, source) + + Inserts the \a source URL to the playlist at the given \a index. + + Returns true if the \a source is added successfully. +*/ +bool QDeclarativePlaylist::insertItem(int index, const QUrl &source) +{ + return m_playlist->insertMedia(index, QMediaContent(source)); +} + +/*! + \qmlmethod bool QtMultimedia::Playlist::removeItem(index) + + Removed the item at the given \a index from the playlist. + + Returns true if the \a source is removed successfully. +*/ +bool QDeclarativePlaylist::removeItem(int index) +{ + return m_playlist->removeMedia(index); +} + +/*! + \qmlmethod bool QtMultimedia::Playlist::clear() + + Removes all the items from the playlist. + + Returns true if the operation is successful. +*/ +bool QDeclarativePlaylist::clear() +{ + return m_playlist->clear(); +} + +int QDeclarativePlaylist::rowCount(const QModelIndex &parent) const +{ + if (parent.isValid()) + return 0; + + return m_playlist->mediaCount(); +} + +QVariant QDeclarativePlaylist::data(const QModelIndex &index, int role) const +{ + Q_UNUSED(role); + + if (!index.isValid()) + return QVariant(); + + return m_playlist->media(index.row()).canonicalUrl(); +} + +QHash<int, QByteArray> QDeclarativePlaylist::roleNames() const +{ + QHash<int, QByteArray> roleNames; + roleNames[SourceRole] = "source"; + return roleNames; +} + +void QDeclarativePlaylist::classBegin() +{ + m_playlist = new QMediaPlaylist(this); + + connect(m_playlist, SIGNAL(currentIndexChanged(int)), + this, SIGNAL(currentIndexChanged())); + connect(m_playlist, SIGNAL(playbackModeChanged(QMediaPlaylist::PlaybackMode)), + this, SIGNAL(playbackModeChanged())); + connect(m_playlist, SIGNAL(currentMediaChanged(QMediaContent)), + this, SIGNAL(currentItemSourceChanged())); + connect(m_playlist, SIGNAL(mediaAboutToBeInserted(int,int)), + this, SLOT(_q_mediaAboutToBeInserted(int,int))); + connect(m_playlist, SIGNAL(mediaInserted(int,int)), + this, SLOT(_q_mediaInserted(int,int))); + connect(m_playlist, SIGNAL(mediaAboutToBeRemoved(int,int)), + this, SLOT(_q_mediaAboutToBeRemoved(int,int))); + connect(m_playlist, SIGNAL(mediaRemoved(int,int)), + this, SLOT(_q_mediaRemoved(int,int))); + connect(m_playlist, SIGNAL(mediaChanged(int,int)), + this, SLOT(_q_mediaChanged(int,int))); + connect(m_playlist, SIGNAL(loaded()), + this, SIGNAL(loaded())); + connect(m_playlist, SIGNAL(loadFailed()), + this, SLOT(_q_loadFailed())); + + if (m_playlist->isReadOnly()) { + m_readOnly = true; + emit readOnlyChanged(); + } +} + +void QDeclarativePlaylist::componentComplete() +{ +} + +/*! + \qmlsignal QtMultimedia::Audio::itemAboutToBeInserted(start, end) + + This signal is emitted when items are to be inserted into the playlist at \a start and ending at + \a end. + + The corresponding handler is \c onItemAboutToBeInserted. +*/ + +/*! + \qmlsignal QtMultimedia::Audio::itemInserted(start, end) + + This signal is emitted after items have been inserted into the playlist. The new items are those + between \a start and \a end inclusive. + + The corresponding handler is \c onItemInserted. +*/ + +/*! + \qmlsignal QtMultimedia::Audio::itemAboutToBeRemoved(start, end) + + This signal emitted when items are to be deleted from the playlist at \a start and ending at + \a end. + + The corresponding handler is \c onItemAboutToBeRemoved. +*/ + +/*! + \qmlsignal QtMultimedia::Audio::itemRemoved(start, end) + + This signal is emitted after items have been removed from the playlist. The removed items are + those between \a start and \a end inclusive. + + The corresponding handler is \c onMediaRemoved. +*/ + +/*! + \qmlsignal QtMultimedia::Audio::itemChanged(start, end) + + This signal is emitted after items have been changed in the playlist between \a start and + \a end positions inclusive. + + The corresponding handler is \c onItemChanged. +*/ + +/*! + \qmlsignal QtMultimedia::Audio::loaded() + + This signal is emitted when the playlist loading succeeded. + + The corresponding handler is \c onLoaded. +*/ + +/*! + \qmlsignal QtMultimedia::Audio::loadFailed() + + This signal is emitted when the playlist loading failed. \l error and \l errorString can be + checked for more information on the failure. + + The corresponding handler is \c onLoadFailed. +*/ + +QT_END_NAMESPACE + +#include "moc_qdeclarativeplaylist_p.cpp" |