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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtDeclarative module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "private/qdeclarativeanimatedimage_p.h"
#include "private/qdeclarativeanimatedimage_p_p.h"
#ifndef QT_NO_MOVIE
#include <qdeclarativeinfo.h>
#include <private/qdeclarativeengine_p.h>
#include <QMovie>
#include <QNetworkRequest>
#include <QNetworkReply>
QT_BEGIN_NAMESPACE
/*!
\qmlclass AnimatedImage QDeclarativeAnimatedImage
\inherits Image
\since 4.7
\ingroup basic-visual-elements
The AnimatedImage element extends the features of the \l Image element, providing
a way to play animations stored as images containing a series of frames,
such as those stored in GIF files.
Information about the current frame and totla length of the animation can be
obtained using the \l currentFrame and \l frameCount properties. You can
start, pause and stop the animation by changing the values of the \l playing
and \l paused properties.
The full list of supported formats can be determined with QMovie::supportedFormats().
\section1 Example Usage
\beginfloatleft
\image animatedimageitem.gif
\endfloat
The following QML shows how to display an animated image and obtain information
about its state, such as the current frame and total number of frames.
The result is an animated image with a simple progress indicator underneath it.
\clearfloat
\snippet doc/src/snippets/declarative/animatedimage.qml document
\sa BorderImage, Image
*/
/*!
\qmlproperty bool AnimatedImage::cache
\since Quick 1.1
Specifies whether the image should be cached. The default value is
true. Setting \a cache to false is useful when dealing with large images,
to make sure that they aren't cached at the expense of small 'ui element' images.
*/
/*!
\qmlproperty bool AnimatedImage::mirror
\since Quick 1.1
This property holds whether the image should be horizontally inverted
(effectively displaying a mirrored image).
The default value is false.
*/
QDeclarativeAnimatedImage::QDeclarativeAnimatedImage(QDeclarativeItem *parent)
: QDeclarativeImage(*(new QDeclarativeAnimatedImagePrivate), parent)
{
}
QDeclarativeAnimatedImage::~QDeclarativeAnimatedImage()
{
Q_D(QDeclarativeAnimatedImage);
delete d->_movie;
}
/*!
\qmlproperty bool AnimatedImage::paused
This property holds whether the animated image is paused.
By default, this property is false. Set it to true when you want to pause
the animation.
*/
bool QDeclarativeAnimatedImage::isPaused() const
{
Q_D(const QDeclarativeAnimatedImage);
if(!d->_movie)
return false;
return d->_movie->state()==QMovie::Paused;
}
void QDeclarativeAnimatedImage::setPaused(bool pause)
{
Q_D(QDeclarativeAnimatedImage);
if(pause == d->paused)
return;
d->paused = pause;
if(!d->_movie)
return;
d->_movie->setPaused(pause);
}
/*!
\qmlproperty bool AnimatedImage::playing
This property holds whether the animated image is playing.
By default, this property is true, meaning that the animation
will start playing immediately.
*/
bool QDeclarativeAnimatedImage::isPlaying() const
{
Q_D(const QDeclarativeAnimatedImage);
if (!d->_movie)
return false;
return d->_movie->state()!=QMovie::NotRunning;
}
void QDeclarativeAnimatedImage::setPlaying(bool play)
{
Q_D(QDeclarativeAnimatedImage);
if(play == d->playing)
return;
d->playing = play;
if (!d->_movie)
return;
if (play)
d->_movie->start();
else
d->_movie->stop();
}
/*!
\qmlproperty int AnimatedImage::currentFrame
\qmlproperty int AnimatedImage::frameCount
currentFrame is the frame that is currently visible. By monitoring this property
for changes, you can animate other items at the same time as the image.
frameCount is the number of frames in the animation. For some animation formats,
frameCount is unknown and has a value of zero.
*/
int QDeclarativeAnimatedImage::currentFrame() const
{
Q_D(const QDeclarativeAnimatedImage);
if (!d->_movie)
return d->preset_currentframe;
return d->_movie->currentFrameNumber();
}
void QDeclarativeAnimatedImage::setCurrentFrame(int frame)
{
Q_D(QDeclarativeAnimatedImage);
if (!d->_movie) {
d->preset_currentframe = frame;
return;
}
d->_movie->jumpToFrame(frame);
}
int QDeclarativeAnimatedImage::frameCount() const
{
Q_D(const QDeclarativeAnimatedImage);
if (!d->_movie)
return 0;
return d->_movie->frameCount();
}
void QDeclarativeAnimatedImage::setSource(const QUrl &url)
{
Q_D(QDeclarativeAnimatedImage);
if (url == d->url)
return;
delete d->_movie;
d->_movie = 0;
if (d->reply) {
d->reply->deleteLater();
d->reply = 0;
}
d->url = url;
if (url.isEmpty()) {
delete d->_movie;
d->status = Null;
} else {
#ifndef QT_NO_LOCALFILE_OPTIMIZED_QML
QString lf = QDeclarativeEnginePrivate::urlToLocalFileOrQrc(url);
if (!lf.isEmpty()) {
//### should be unified with movieRequestFinished
d->_movie = new QMovie(lf);
if (!d->_movie->isValid()){
qmlInfo(this) << "Error Reading Animated Image File " << d->url.toString();
delete d->_movie;
d->_movie = 0;
return;
}
connect(d->_movie, SIGNAL(stateChanged(QMovie::MovieState)),
this, SLOT(playingStatusChanged()));
connect(d->_movie, SIGNAL(frameChanged(int)),
this, SLOT(movieUpdate()));
d->_movie->setCacheMode(QMovie::CacheAll);
if(d->playing)
d->_movie->start();
else
d->_movie->jumpToFrame(0);
if(d->paused)
d->_movie->setPaused(true);
d->setPixmap(d->_movie->currentPixmap());
d->status = Ready;
d->progress = 1.0;
emit statusChanged(d->status);
emit sourceChanged(d->url);
emit progressChanged(d->progress);
return;
}
#endif
d->status = Loading;
QNetworkRequest req(d->url);
req.setAttribute(QNetworkRequest::HttpPipeliningAllowedAttribute, true);
d->reply = qmlEngine(this)->networkAccessManager()->get(req);
QObject::connect(d->reply, SIGNAL(finished()),
this, SLOT(movieRequestFinished()));
}
emit statusChanged(d->status);
}
#define ANIMATEDIMAGE_MAXIMUM_REDIRECT_RECURSION 16
void QDeclarativeAnimatedImage::movieRequestFinished()
{
Q_D(QDeclarativeAnimatedImage);
d->redirectCount++;
if (d->redirectCount < ANIMATEDIMAGE_MAXIMUM_REDIRECT_RECURSION) {
QVariant redirect = d->reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
if (redirect.isValid()) {
QUrl url = d->reply->url().resolved(redirect.toUrl());
d->reply->deleteLater();
d->reply = 0;
setSource(url);
return;
}
}
d->redirectCount=0;
d->_movie = new QMovie(d->reply);
if (!d->_movie->isValid()){
#ifndef QT_NO_DEBUG_STREAM
qmlInfo(this) << "Error Reading Animated Image File " << d->url;
#endif
delete d->_movie;
d->_movie = 0;
return;
}
connect(d->_movie, SIGNAL(stateChanged(QMovie::MovieState)),
this, SLOT(playingStatusChanged()));
connect(d->_movie, SIGNAL(frameChanged(int)),
this, SLOT(movieUpdate()));
d->_movie->setCacheMode(QMovie::CacheAll);
if(d->playing)
d->_movie->start();
if (d->paused || !d->playing) {
d->_movie->jumpToFrame(d->preset_currentframe);
d->preset_currentframe = 0;
}
if(d->paused)
d->_movie->setPaused(true);
d->setPixmap(d->_movie->currentPixmap());
}
void QDeclarativeAnimatedImage::movieUpdate()
{
Q_D(QDeclarativeAnimatedImage);
d->setPixmap(d->_movie->currentPixmap());
emit frameChanged();
}
void QDeclarativeAnimatedImage::playingStatusChanged()
{
Q_D(QDeclarativeAnimatedImage);
if((d->_movie->state() != QMovie::NotRunning) != d->playing){
d->playing = (d->_movie->state() != QMovie::NotRunning);
emit playingChanged();
}
if((d->_movie->state() == QMovie::Paused) != d->paused){
d->playing = (d->_movie->state() == QMovie::Paused);
emit pausedChanged();
}
}
void QDeclarativeAnimatedImage::componentComplete()
{
Q_D(QDeclarativeAnimatedImage);
QDeclarativeItem::componentComplete(); // NOT QDeclarativeImage
if (!d->reply) {
setCurrentFrame(d->preset_currentframe);
d->preset_currentframe = 0;
}
}
QT_END_NAMESPACE
#endif // QT_NO_MOVIE
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