OpenBoard/src/domain/UBGraphicsMediaItem.h

/*
 * 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 2 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/>.
 */
#ifndef UBGRAPHICSMEDIAITEM_H
#define UBGRAPHICSMEDIAITEM_H

#include "UBGraphicsProxyWidget.h"
#include <phonon/AudioOutput>
#include <phonon/MediaObject>
#include <phonon/VideoWidget>
#include "core/UBApplication.h"
#include "board/UBBoardController.h"
#include "frameworks/UBFileSystemUtils.h"


class UBGraphicsMediaItem : public UBGraphicsProxyWidget
{
    Q_OBJECT

public:
    class UBAudioPresentationWidget : public QWidget
    {
        public:
            UBAudioPresentationWidget::UBAudioPresentationWidget(QWidget *parent = NULL)
                :QWidget(parent)
                , mBorderSize(10)
                , mTitleSize(10)
            {}

            int borderSize()
            {
                return mBorderSize;
            }
            void setTitle(QString title = QString()){mTitle = title;}
            QString getTitle(){return mTitle;}

        private:
            virtual void paintEvent(QPaintEvent *event)
            {
                QPainter painter(this);
                painter.fillRect(rect(), QBrush(Qt::black));

                if (QString() != mTitle)
                {
                    painter.setPen(QPen(Qt::white));                 
                    QRect titleRect = rect();
                    titleRect.setX(mBorderSize);
                    titleRect.setY(2);
                    titleRect.setHeight(15);
                    painter.drawText(titleRect, mTitle);
                }

                QWidget::paintEvent(event);
            }

        int mBorderSize;
        int mTitleSize;
        QString mTitle;
    };

public:
    typedef enum{
        mediaType_Video,
        mediaType_Audio
    } mediaType;

    UBGraphicsMediaItem(const QUrl& pMediaFileUrl, QGraphicsItem *parent = 0);
    ~UBGraphicsMediaItem();

    enum { Type = UBGraphicsItemType::MediaItemType };

    virtual int type() const
    {
        return Type;
    }

    void hasMediaChanged(bool hasMedia);
    void showOnDisplayChanged(bool shown);

    virtual QUrl mediaFileUrl() const
    {
        return mMediaFileUrl;
    }

    Phonon::MediaObject* mediaObject() const
    {
        return mMediaObject;
    }

    void setInitialPos(qint64 p) {
        mInitialPos = p;
    }
    qint64 initialPos() {
        return mInitialPos;
    }

    bool isMuted() const
    {
        return mMuted;
    }

    Phonon::VideoWidget* videoWidget() const
    {
        return mVideoWidget;
    }

    bool hasLinkedImage(){return haveLinkedImage;}

    mediaType getMediaType() { return mMediaType; }

    virtual UBGraphicsScene* scene();

    virtual UBItem* deepCopy() const;

    virtual void setSourceUrl(const QUrl &pSourceUrl)
    {
        UBGraphicsMediaItem::UBAudioPresentationWidget* pAudioWidget = dynamic_cast<UBGraphicsMediaItem::UBAudioPresentationWidget*>(mAudioWidget);
        if (pAudioWidget)
        {
            pAudioWidget->setTitle(UBFileSystemUtils::lastPathComponent(pSourceUrl.toLocalFile()));
        }

        UBItem::setSourceUrl(pSourceUrl);
    }

public slots:

    void toggleMute();
    void activeSceneChanged();

protected:

    virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
    virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
    virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);

    virtual void clearSource();

    Phonon::MediaObject *mMediaObject;
    Phonon::VideoWidget *mVideoWidget;
    Phonon::AudioOutput *mAudioOutput;
    Phonon::MediaSource mSource;
    QWidget *mAudioWidget;

private:

    bool mMuted;
    bool mMutedByUserAction;
    static bool sIsMutedByDefault;

    QUrl mMediaFileUrl;
    QString mMediaSource;

    qint64 mInitialPos;

    mediaType mMediaType;

    bool mShouldMove;
    QPointF mMousePressPos;
    QPointF mMouseMovePos;

    bool haveLinkedImage;
    QGraphicsPixmapItem *mLinkedImage;    
};
#endif // UBGRAPHICSMEDIAITEM_H