Method UpdateViewIfNoTracks

src/TrackPanel.cpp:662–682

}

void TrackPanel::UpdateViewIfNoTracks()
{
   if (mTracks->empty())
   {
      // BG: There are no more tracks on screen
      //BG: Set zoom to normal
      mViewInfo->SetZoom(ZoomInfo::GetDefaultZoom());

      //STM: Set selection to 0,0
      //PRL: and default the rest of the selection information
      mViewInfo->selectedRegion = SelectedRegion();

      // PRL:  Following causes the time ruler to align 0 with left edge.
      // Bug 972
      mViewInfo->hpos = 0;

      Viewport::Get(*GetProject()).HandleResize();
      //STM: Clear message if all tracks are removed
      ProjectStatus::Get( *GetProject() ).Set({});
   }
}

// The tracks positions within the list have changed, so update the vertical
// ruler size for the track that triggered the event.