Added Ctrl+Enter shortcut for clip preview.

src/GUI/MainWindow.cpp

@@ -287,6 +287,8 @@ void MainWindow::initializeDockWidgets( void )
                                   Qt::AllDockWidgetAreas,
                                   QDockWidget::AllDockWidgetFeatures,
                                   Qt::TopDockWidgetArea );
+    QShortcut*  clipShortcut = new QShortcut( QKeySequence( tr( "Ctrl+Return", "Start clip preview" ) ), this );
+    connect( clipShortcut, SIGNAL( activated() ), m_clipPreview, SLOT( on_pushButtonPlay_clicked() ) );
 
     m_projectPreview = new PreviewWidget( new WorkflowRenderer(), this );
     dockManager->addDockedWidget( m_projectPreview,
@@ -294,8 +296,8 @@ void MainWindow::initializeDockWidgets( void )
                                   Qt::AllDockWidgetAreas,
                                   QDockWidget::AllDockWidgetFeatures,
                                   Qt::TopDockWidgetArea );
-    QShortcut*  shortcut = new QShortcut( QKeySequence( tr( "Space", "Start preview" ) ), this );
-    connect( shortcut, SIGNAL( activated() ), m_projectPreview, SLOT( on_pushButtonPlay_clicked() ) );
+    QShortcut*  renderShortcut = new QShortcut( QKeySequence( tr( "Space", "Start render preview" ) ), this );
+    connect( renderShortcut, SIGNAL( activated() ), m_projectPreview, SLOT( on_pushButtonPlay_clicked() ) );
 
     dockManager->addDockedWidget( UndoStack::getInstance( this ),
                                   tr( "History" ),