Add time step slider to 3d views (#9695)

Add new toolbar with slider that controls visible timestep in the view

Fwk/AppFwk/cafAnimControl/cafAnimationToolBar.cpp

@@ -377,6 +377,8 @@ void AnimationToolBar::slotUpdateAnimationGuiFromFrameIndex( int value )
     m_timestepCombo->setCurrentIndex( value );
     updateAnimationButtons();
     connect( m_timestepCombo, SIGNAL( currentIndexChanged( int ) ), m_activeAnimationControl, SLOT( setCurrentFrame( int ) ) );
+
+    emit frameChanged( value );
 }
 
 } // End namespace caf

Fwk/AppFwk/cafAnimControl/cafAnimationToolBar.h

@@ -72,6 +72,9 @@ public:
 
     void setCurrentTimeStepIndex( int index );
 
+signals:
+    void frameChanged( int frameIndex );
+
 public slots:
     void slotUpdateTimestepList( int frameCount );
     void playPauseChanged();