Function SeekWhenAudioInactive

src/menus/SelectMenus.cpp:268–310

}

void SeekWhenAudioInactive
(AudacityProject &project, double seekStep, TimeUnit timeUnit,
SelectionOperation operation)
{
   auto &viewInfo = ViewInfo::Get(project);
   auto &tracks = TrackList::Get(project);
   const auto &settings = ProjectSnap::Get(project);
   auto &viewport = Viewport::Get(project);

   if (operation == CURSOR_MOVE)
   {
      MoveWhenAudioInactive( project, seekStep, timeUnit);
      return;
   }

   auto snapMode = settings.GetSnapMode();
   const double t0 = viewInfo.selectedRegion.t0();
   const double t1 = viewInfo.selectedRegion.t1();
   const double end = std::max(
      tracks.GetEndTime(), viewInfo.GetScreenEndTime());

   // Is it t0 or t1 moving?
   bool bMoveT0 = (operation == SELECTION_CONTRACT && seekStep > 0) ||
	   (operation == SELECTION_EXTEND && seekStep < 0);
   // newT is where we want to move to
   double newT = OffsetTime( project,
      bMoveT0 ? t0 : t1, seekStep, timeUnit, snapMode);
   // constrain to be in the track/screen limits.
   newT = std::max( 0.0, newT );
   newT = std::min( newT, end);
   // optionally constrain to be a contraction, i.e. so t0/t1 do not cross over
   if( operation == SELECTION_CONTRACT )
      newT = bMoveT0 ? std::min( t1, newT ) : std::max( t0, newT );

   // Actually move
   if( bMoveT0 )
      viewInfo.selectedRegion.setT0( newT );
   else
      viewInfo.selectedRegion.setT1( newT );

   // Ensure it is visible
   viewport.ScrollIntoView(newT);
}

// Handle small cursor and play head movements
void SeekLeftOrRight