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LibGUI: Tighten paint invalidation rects in item views :^)

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AbstractView now has a paint_invalidation_rect(index) function that
subclasses can override to provide a tighter invalidation rect for
an index.
This commit is contained in:
Andreas Kling 2021-07-10 17:11:04 +02:00
parent 148e72bfa0
commit df96380121
9 changed files with 48 additions and 1 deletions
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16
Userland/Libraries/LibGUI/TreeView.cpp
View file

@ -717,4 +717,20 @@ int TreeView::tree_column_x_offset() const
return offset;
}
Gfx::IntRect TreeView::content_rect(ModelIndex const& index) const
{
if (!index.is_valid())
return {};
Gfx::IntRect found_rect;
traverse_in_paint_order([&](ModelIndex const& current_index, Gfx::IntRect const& rect, Gfx::IntRect const&, int) {
if (index == current_index) {
found_rect = rect;
return IterationDecision::Break;
}
return IterationDecision::Continue;
});
return found_rect;
}
}