Adjust the GraphicsMovieItem size when the Clip length change

src/GUI/GraphicsMovieItem.cpp

@@ -39,6 +39,11 @@ GraphicsMovieItem::GraphicsMovieItem( Clip* clip ) : m_clip( clip ), m_width( 0
                      .arg( length.toString("hh:mm:ss.zzz") ) );
     setToolTip( tooltip );
     setAcceptHoverEvents( true );
+
+    // Adjust the width
+    setWidth( clip->getLength() );
+    // Automatically adjust future changes
+    connect( clip, SIGNAL( lengthUpdated() ), this, SLOT( adjustLength() ) );
 }
 
 GraphicsMovieItem::~GraphicsMovieItem()
@@ -75,6 +80,13 @@ void GraphicsMovieItem::setHeight( int height )
     m_height = height;
 }
 
+void GraphicsMovieItem::adjustLength()
+{
+    //FIXME implement clip expanding.
+    Q_ASSERT( m_clip->getLength() <= m_width );
+    setWidth( m_clip->getLength() );
+}
+
 void GraphicsMovieItem::paintAudioSpectrum( QPainter* painter )
 {
     qreal x1, x2, y1, y2;

src/GUI/GraphicsMovieItem.h

@@ -51,7 +51,6 @@ public:
     void setWidth( int width );
     void setHeight( int height );
     Clip* clip() const;
-    void    setClip( Clip* clip );
     //void setAudioSpectrum( QVector<float*> spectrum );
     void paintAudioSpectrum( QPainter* painter );
 
@@ -61,6 +60,9 @@ protected:
     virtual void        hoverEnterEvent( QGraphicsSceneHoverEvent* event );
     virtual void        hoverLeaveEvent( QGraphicsSceneHoverEvent* event );
 
+private slots:
+    void                adjustLength();
+
 private:
     Clip*               m_clip;
     int                 m_width;

src/GUI/TracksView.cpp

@@ -186,7 +186,6 @@ void TracksView::addMediaItem( Clip* clip, unsigned int track, qint64 start )
     }
 
     GraphicsMovieItem* item = new GraphicsMovieItem( clip );
-    item->setWidth( clip->getLength() );
     item->setHeight( tracksHeight() );
     item->setParentItem( getTrack( track ) );
     item->oldTrackNumber = track;
@@ -208,7 +207,6 @@ void TracksView::dragEnterEvent( QDragEnterEvent* event )
 
     if ( m_dragItem ) delete m_dragItem;
     m_dragItem = new GraphicsMovieItem( clip );
-    m_dragItem->setWidth( ( int ) ( clip->getLength() ) );
     m_dragItem->setHeight( tracksHeight() );
     m_dragItem->setPos( mappedXPos, 0 );
     m_dragItem->setParentItem( m_layout->itemAt( 0 )->graphicsItem() );