OpenBoard/src/domain/UBGraphicsMediaItem.cpp

/*
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "UBGraphicsMediaItem.h"
#include "UBGraphicsScene.h"
#include "UBGraphicsDelegateFrame.h"

#include "document/UBDocumentProxy.h"

#include "core/UBApplication.h"

#include "board/UBBoardController.h"

#include "frameworks/UBFileSystemUtils.h"

#include "core/memcheck.h"

bool UBGraphicsMediaItem::sIsMutedByDefault = false;

UBGraphicsMediaItem::UBGraphicsMediaItem(const QUrl& pMediaFileUrl, QGraphicsItem *parent)
        : UBGraphicsProxyWidget(parent)
        , mMuted(sIsMutedByDefault)
        , mMutedByUserAction(sIsMutedByDefault)
        , mMediaFileUrl(pMediaFileUrl)
        , mInitialPos(0)
{
    //NOOP
}


UBGraphicsMediaItem::~UBGraphicsMediaItem()
{
    if (mMediaObject)
        mMediaObject->stop();
}


QVariant UBGraphicsMediaItem::itemChange(GraphicsItemChange change, const QVariant &value)
{
    if ((change == QGraphicsItem::ItemEnabledChange)
            || (change == QGraphicsItem::ItemSceneChange)
            || (change == QGraphicsItem::ItemVisibleChange))
    {
        if (mMediaObject && (!isEnabled() || !isVisible() || !scene()))
        {
            mMediaObject->pause();
        }
    }
    else if (change == QGraphicsItem::ItemSceneHasChanged)
    {
        if (!scene())
        {
            mMediaObject->stop();
        }
        else
        {
            QString absoluteMediaFilename;

            if(mMediaFileUrl.toLocalFile().startsWith("audios/") || mMediaFileUrl.toLocalFile().startsWith("videos/")){
                absoluteMediaFilename = scene()->document()->persistencePath() + "/"  + mMediaFileUrl.toLocalFile();
            }
            else{
                absoluteMediaFilename = mMediaFileUrl.toLocalFile();
            }

            if (absoluteMediaFilename.length() > 0)
                mMediaObject->setCurrentSource(Phonon::MediaSource(absoluteMediaFilename));

        }
    }

    return UBGraphicsProxyWidget::itemChange(change, value);
}

void UBGraphicsMediaItem::clearSource()
{
    QString path = mediaFileUrl().toLocalFile();
    //if path is absolute clean duplicated path string
    if (!path.contains(UBApplication::boardController->activeDocument()->persistencePath()))
        path = UBApplication::boardController->activeDocument()->persistencePath() + "/" + path;

    if (!UBFileSystemUtils::deleteFile(path))
        qDebug() << "cannot delete file: " << path;
}

void UBGraphicsMediaItem::toggleMute()
{
    mMuted = !mMuted;
    mAudioOutput->setMuted(mMuted);
    mMutedByUserAction = mMuted;
    sIsMutedByDefault = mMuted;
}


void UBGraphicsMediaItem::hasMediaChanged(bool hasMedia)
{
    Q_UNUSED(hasMedia);
    mMediaObject->seek(mInitialPos);
}


UBGraphicsScene* UBGraphicsMediaItem::scene()
{
    return qobject_cast<UBGraphicsScene*>(QGraphicsItem::scene());
}


void UBGraphicsMediaItem::activeSceneChanged()
{
    if (UBApplication::boardController->activeScene() != scene())
    {
        mMediaObject->pause();
    }
}


void UBGraphicsMediaItem::showOnDisplayChanged(bool shown)
{
    if (!shown)
    {
        mMuted = true;
        mAudioOutput->setMuted(mMuted);
    }
    else if (!mMutedByUserAction)
    {
        mMuted = false;
        mAudioOutput->setMuted(mMuted);
    }
}