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#include <QMovie>
#include <QtDeclarative/qmlengine.h>
#include "qmlgraphicsanimatedimageitem_p.h"
#include "qmlgraphicsanimatedimageitem_p_p.h"
#include <QNetworkRequest>
#include <QNetworkReply>

QT_BEGIN_NAMESPACE

/*!
    \class QmlGraphicsAnimatedImageItem
    \internal
*/

/*!
    \qmlclass AnimatedImage QFxAnimatedImageItem
    \inherits Image

    This item provides for playing animations stored as images containing a series of frames,
    such as GIF files. The full list of supported formats can be determined with
    QMovie::supportedFormats().

    \table
    \row 
    \o \image animatedimageitem.gif
    \o
    \qml
Item {
    width: anim.width; height: anim.height+8
    AnimatedImage { id: anim; source: "pics/games-anim.gif" }
    Rectangle { color: "red"; width: 4; height: 8; y: anim.height
        x: (anim.width-width)*anim.currentFrame/(anim.frameCount-1)
    }
}
    \endqml
    \endtable
*/
QML_DEFINE_TYPE(Qt,4,6,AnimatedImage,QmlGraphicsAnimatedImageItem)

QmlGraphicsAnimatedImageItem::QmlGraphicsAnimatedImageItem(QmlGraphicsItem *parent)
    : QmlGraphicsImage(*(new QmlGraphicsAnimatedImageItemPrivate), parent)
{
}

QmlGraphicsAnimatedImageItem::QmlGraphicsAnimatedImageItem(QmlGraphicsAnimatedImageItemPrivate &dd, QmlGraphicsItem *parent)
    : QmlGraphicsImage(dd, parent)
{
}

QmlGraphicsAnimatedImageItem::~QmlGraphicsAnimatedImageItem()
{
    Q_D(QmlGraphicsAnimatedImageItem);
    delete d->_movie;
}

/*!
  \qmlproperty bool AnimatedImage::paused
  This property holds whether the animated image is paused or not

  Defaults to false, and can be set to true when you want to pause.
*/
bool QmlGraphicsAnimatedImageItem::isPaused() const
{
    Q_D(const QmlGraphicsAnimatedImageItem);
    if(!d->_movie)
        return false;
    return d->_movie->state()==QMovie::Paused;
}

void QmlGraphicsAnimatedImageItem::setPaused(bool pause)
{
    Q_D(QmlGraphicsAnimatedImageItem);
    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 or not

  Defaults to true, so as to start playing immediately.
*/
bool QmlGraphicsAnimatedImageItem::isPlaying() const
{
    Q_D(const QmlGraphicsAnimatedImageItem);
    if (!d->_movie)
        return false;
    return d->_movie->state()!=QMovie::NotRunning;
}

void QmlGraphicsAnimatedImageItem::setPlaying(bool play)
{
    Q_D(QmlGraphicsAnimatedImageItem);
    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. Watching when this changes can
  allow other things to animate at the same time as the image. frameCount is the number
  of frames in the animation. For some animation formats, frameCount is unknown and set to zero.
*/
int QmlGraphicsAnimatedImageItem::currentFrame() const
{
    Q_D(const QmlGraphicsAnimatedImageItem);
    if (!d->_movie)
        return d->preset_currentframe;
    return d->_movie->currentFrameNumber();
}

void QmlGraphicsAnimatedImageItem::setCurrentFrame(int frame)
{
    Q_D(QmlGraphicsAnimatedImageItem);
    if (!d->_movie) {
        d->preset_currentframe = frame;
        return;
    }
    d->_movie->jumpToFrame(frame);
}

int QmlGraphicsAnimatedImageItem::frameCount() const
{
    Q_D(const QmlGraphicsAnimatedImageItem);
    if (!d->_movie)
        return 0;
    return d->_movie->frameCount();
}

static QString toLocalFileOrQrc(const QUrl& url)
{
    QString r = url.toLocalFile();
    if (r.isEmpty() && url.scheme() == QLatin1String("qrc"))
        r = QLatin1Char(':') + url.path();
    return r;
}

void QmlGraphicsAnimatedImageItem::setSource(const QUrl &url)
{
    Q_D(QmlGraphicsAnimatedImageItem);
    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 = toLocalFileOrQrc(url);
        if (!lf.isEmpty()) {
            //### should be unified with movieRequestFinished
            d->_movie = new QMovie(lf);
            if (!d->_movie->isValid()){
                qWarning() << "Error Reading Animated Image File " << d->url;
                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);
        d->reply = qmlEngine(this)->networkAccessManager()->get(req);
        QObject::connect(d->reply, SIGNAL(finished()),
                         this, SLOT(movieRequestFinished()));
    }

    emit statusChanged(d->status);
}

void QmlGraphicsAnimatedImageItem::movieRequestFinished()
{
    Q_D(QmlGraphicsAnimatedImageItem);
    d->_movie = new QMovie(d->reply);
    if (!d->_movie->isValid()){
        qWarning() << "Error Reading Animated Image File " << d->url;
        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(d->preset_currentframe);
        d->preset_currentframe = 0;
    }
    if(d->paused)
        d->_movie->setPaused(true);
    d->setPixmap(d->_movie->currentPixmap());
}

void QmlGraphicsAnimatedImageItem::movieUpdate()
{
    Q_D(QmlGraphicsAnimatedImageItem);
    d->setPixmap(d->_movie->currentPixmap());
    emit frameChanged();
}

void QmlGraphicsAnimatedImageItem::playingStatusChanged()
{
    Q_D(QmlGraphicsAnimatedImageItem);
    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 QmlGraphicsAnimatedImageItem::componentComplete()
{
    Q_D(QmlGraphicsAnimatedImageItem);
    setCurrentFrame(d->preset_currentframe);
    d->preset_currentframe = 0;
}

QT_END_NAMESPACE