Method DrawBackgroundWithSelection

src/TrackArt.cpp:648–754

}

void TrackArt::DrawBackgroundWithSelection(
   TrackPanelDrawingContext &context, const wxRect &rect,
   const Channel &channel, const wxBrush &selBrush, const wxBrush &unselBrush,
   bool useSelection, bool useBeatsAlternateColor)
{
   const auto dc = &context.dc;
   const auto artist = TrackArtist::Get( context );
   const auto &selectedRegion = *artist->pSelectedRegion;
   const auto& zoomInfo = *artist->pZoomInfo;


   //MM: Draw background. We should optimize that a bit more.
   const double sel0 = useSelection ? selectedRegion.t0() : 0.0;
   const double sel1 = useSelection ? selectedRegion.t1() : 0.0;

   auto pTrack = dynamic_cast<const Track*>(&channel.GetChannelGroup());
   if (!pTrack)
      return;
   auto &track = *pTrack;
   BeatsGridlinePainter gridlinePainter(zoomInfo, GetProject(track));

   dc->SetPen(*wxTRANSPARENT_PEN);

   const auto& beatStrongBrush = artist->beatStrongBrush[useBeatsAlternateColor];
   const auto& beatStrongSelBrush = artist->beatStrongSelBrush[useBeatsAlternateColor];
   const auto& beatWeakBrush = artist->beatWeakBrush[useBeatsAlternateColor];
   const auto& beatWeakSelBrush = artist->beatWeakSelBrush[useBeatsAlternateColor];
   const auto& beatSepearatorPen = artist->beatSepearatorPen[useBeatsAlternateColor];
   const auto& barSepearatorPen = artist->barSepearatorPen[useBeatsAlternateColor];

   auto drawBgRect = [dc, &gridlinePainter, &rect](
                        const wxBrush& regularBrush,
                        const wxBrush& beatStrongBrush,
                        const wxBrush& beatWeakBrush, const wxRect& subRect)
   {
      if (!gridlinePainter.enabled)
      {
         // Track not selected; just draw background
         dc->SetBrush(regularBrush);
         dc->DrawRectangle(subRect);
      }
      else
      {
         gridlinePainter.DrawBackground(
            *dc, subRect, rect, beatStrongBrush, beatWeakBrush);
      }
   };

   if (SyncLock::IsSelectedOrSyncLockSelected(track)) {
      // Rectangles before, within, after the selection
      wxRect before = rect;
      wxRect within = rect;
      wxRect after = rect;

      before.width = (int)(zoomInfo.TimeToPosition(sel0) );
      if (before.GetRight() > rect.GetRight()) {
         before.width = rect.width;
      }