Method UpdateTrackVRuler

src/TrackPanel.cpp:974–1010

}

void TrackPanel::UpdateTrackVRuler(Track &t)
{
   auto heights = FindAdjustedChannelHeights(t);

   wxRect rect(mViewInfo->GetVRulerOffset(),
            0,
            mViewInfo->GetVRulerWidth(),
            0);

   auto pHeight = heights.begin();
   for (auto pChannel : t.Channels()) {
      auto &view = ChannelView::Get(*pChannel);
      const auto height = *pHeight++;
      rect.SetHeight(height);
      const auto subViews = view.GetSubViews(rect);
      if (subViews.empty())
         continue;

      auto iter = subViews.begin(), end = subViews.end(), next = iter;
      auto yy = iter->first;
      wxSize vRulerSize{ 0, 0 };
      auto &size = view.vrulerSize;
      for (; iter != end; iter = next) {
         ++next;
         auto nextY = (next == end)
            ? height
            : next->first;
         rect.SetHeight(nextY - yy);
         // This causes ruler size in the track to be reassigned:
         ChannelVRulerControls::Get(*iter->second).UpdateRuler(rect);
         // But we want to know the maximum width and height over all sub-views:
         vRulerSize.IncTo({ size.first, size.second });
         yy = nextY;
      }
      size = { vRulerSize.x, vRulerSize.y };
   }
}

void TrackPanel::UpdateVRulerSize()
{