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Fix instable IDs following animated panels (#7994)

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* Found thanks to https://github.com/emilk/egui/pull/7984

If you put an animated `Panel` inside a `Ui`, then the automatic ids for
following widgets would differ when the panel was collapsed or open.
This commit is contained in:
Emil Ernerfeldt
2026-03-21 21:52:52 +01:00
committed by GitHub
parent 8b2315375b
commit 4714aa7d31
1 changed files with 5 additions and 1 deletions
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6
crates/egui/src/containers/panel.rs
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@@ -561,7 +561,11 @@ impl Panel {
let how_expanded = animate_expansion(ui.ctx(), self.id.with("animation"), is_expanded);
// Get either the fake or the real panel to animate
let animated_panel = self.get_animated_panel(ui.ctx(), is_expanded)?;
let Some(animated_panel) = self.get_animated_panel(ui.ctx(), is_expanded) else {
// Make sure the ids of the next widgets are the same whether we show the panel or not:
ui.skip_ahead_auto_ids(1);
return None;
};
if how_expanded < 1.0 {
// Show a fake panel in this in-between animation state: