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Code Issues Releases Wiki Activity

Rewrite WaveTrackView::GetSubViews to cache last computed heights

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This commit is contained in:
Paul Licameli
2019-07-11 12:50:00 -04:00
parent 125b8ad0da
commit af9959dc98
2 changed files with 24 additions and 11 deletions
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3
src/TrackPanel.cpp
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@@ -923,6 +923,7 @@ void TrackPanel::UpdateTrackVRuler(Track *t)
for (auto channel : TrackList::Channels(t)) {
auto &view = TrackView::Get( *channel );
const auto height = view.GetHeight() - (kTopMargin + kBottomMargin);
rect.SetHeight( height );
const auto subViews = view.GetSubViews( rect );
if (subViews.empty())
continue;
@@ -1142,7 +1143,7 @@ struct ChannelGroup final : TrackPanelGroup {
auto &view = TrackView::Get( *channel );
auto height = view.GetHeight();
rect.SetTop( yy );
rect.SetHeight( height );
rect.SetHeight( height - kSeparatorThickness );
const auto subViews = TrackView::Get( *channel ).GetSubViews( rect );
auto y1 = yy;
for ( const auto &subView : subViews ) {