Add item selection in the timeline (simple, multiple and rubberband)

There's some redrawing issues in rubberband mode, this will be fixed
at a later time.

src/gui/GraphicsMovieItem.cpp

@@ -30,6 +30,8 @@
 
 GraphicsMovieItem::GraphicsMovieItem( Clip* clip ) : m_clip( clip ), m_width( 0 ), m_height( 0 )
 {
+    setFlags( QGraphicsItem::ItemIsSelectable );
+
     QTime length = QTime().addMSecs( clip->getParent()->getLength() );
     QString tooltip( tr( "<p style='white-space:pre'><b>Name:</b> %1"
                      "<br><b>Length:</b> %2" )
@@ -61,7 +63,11 @@ void GraphicsMovieItem::paint( QPainter* painter, const QStyleOptionGraphicsItem
     gradient.setColorAt( 0, QColor::fromRgb( 32, 52, 142  ) );
     gradient.setColorAt( 1, QColor::fromRgb( 43, 69, 181  ) );
 
-    painter->setPen( QPen( Qt::NoPen ) );
+    if ( isSelected() )
+        painter->setPen( QPen( Qt::yellow ) );
+    else
+        painter->setPen( QPen( Qt::NoPen ) );
+
     painter->setBrush( QBrush( gradient ) );
     painter->drawRect( boundingRect() );
 

src/gui/TracksView.cpp

@@ -362,11 +362,8 @@ void TracksView::mousePressEvent( QMouseEvent* event )
     if ( event->modifiers() == Qt::ControlModifier && mediaCollisionList.count() == 0 )
     {
         setDragMode( QGraphicsView::ScrollHandDrag );
-        QGraphicsView::mousePressEvent( event );
-        return;
     }
-
-    if ( event->modifiers() == Qt::NoModifier &&
+    else if ( event->modifiers() == Qt::NoModifier &&
          event->button() == Qt::LeftButton &&
          mediaCollisionList.count() == 1 )
     {
@@ -377,17 +374,22 @@ void TracksView::mousePressEvent( QMouseEvent* event )
             m_actionMoveExecuted = false;
             m_actionItem = mediaCollisionList.at( 0 );
         }
-        return;
+        scene()->clearSelection();
+        item->setSelected( true );
     }
-
-    /*if ( event->modifiers() & Qt::ShiftModifier && collisionList.count() == 0 )
+    else if ( event->modifiers() == Qt::ControlModifier &&
+              event->button() == Qt::LeftButton &&
+              mediaCollisionList.count() == 1 )
+    {
+        AbstractGraphicsMediaItem* item = mediaCollisionList.at( 0 );
+        item->setSelected( !item->isSelected() );
+    }
+    else if ( event->modifiers() & Qt::ShiftModifier && mediaCollisionList.count() == 0 )
     {
         setDragMode( QGraphicsView::RubberBandDrag );
         if ( !event->modifiers() & Qt::ControlModifier )
             scene()->clearSelection();
-        QGraphicsView::mousePressEvent( event );
-        return;
-    }*/
+    }
 
     QGraphicsView::mousePressEvent( event );
 }