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Forbid creating a panel from within another panel

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This commit is contained in:
Emil Ernerfeldt 2020-10-27 15:37:30 +01:00
parent 16a984b71f
commit 07a32793d6
1 changed files with 9 additions and 1 deletions
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8
egui/src/context.rs
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@ -281,6 +281,10 @@ impl Context {
/// Shrink `available_rect()`.
pub(crate) fn allocate_left_panel(&self, panel_rect: Rect) {
debug_assert!(
panel_rect.min == self.available_rect().min,
"Mismatching panels. You must not create a panel from within another panel."
);
let mut remainder = self.available_rect();
remainder.min.x = panel_rect.max.x;
*self.available_rect.lock() = Some(remainder);
@ -289,6 +293,10 @@ impl Context {
/// Shrink `available_rect()`.
pub(crate) fn allocate_top_panel(&self, panel_rect: Rect) {
debug_assert!(
panel_rect.min == self.available_rect().min,
"Mismatching panels. You must not create a panel from within another panel."
);
let mut remainder = self.available_rect();
remainder.min.y = panel_rect.max.y;
*self.available_rect.lock() = Some(remainder);