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Heed constrain rect when auto-positioning windows (#7786)

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The default `Window` and `Area` position will now respect `constrain_to`
rectangle
This commit is contained in:
Emil Ernerfeldt
2025-12-17 17:31:43 +01:00
committed by GitHub
parent 986c2c0ffb
commit 4d63502338
1 changed files with 6 additions and 10 deletions
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16
crates/egui/src/containers/area.rs
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@@ -459,7 +459,7 @@ impl Area {
state.pivot_pos = Some(new_pos);
}
state.pivot_pos.get_or_insert_with(|| {
default_pos.unwrap_or_else(|| automatic_area_position(ctx, layer_id))
default_pos.unwrap_or_else(|| automatic_area_position(ctx, constrain_rect, layer_id))
});
state.interactable = interactable;
@@ -699,7 +699,7 @@ fn pointer_pressed_on_area(ctx: &Context, layer_id: LayerId) -> bool {
}
}
fn automatic_area_position(ctx: &Context, layer_id: LayerId) -> Pos2 {
fn automatic_area_position(ctx: &Context, constrain_rect: Rect, layer_id: LayerId) -> Pos2 {
let mut existing: Vec<Rect> = ctx.memory(|mem| {
mem.areas()
.visible_windows()
@@ -710,13 +710,9 @@ fn automatic_area_position(ctx: &Context, layer_id: LayerId) -> Pos2 {
});
existing.sort_by_key(|r| r.left().round() as i32);
// NOTE: for the benefit of the egui demo, we position the windows so they don't
// cover the side panels, which means we use `available_rect` here instead of `constrain_rect` or `screen_rect`.
let available_rect = ctx.globally_available_rect();
let spacing = 16.0;
let left = available_rect.left() + spacing;
let top = available_rect.top() + spacing;
let left = constrain_rect.left() + spacing;
let top = constrain_rect.top() + spacing;
if existing.is_empty() {
return pos2(left, top);
@@ -750,14 +746,14 @@ fn automatic_area_position(ctx: &Context, layer_id: LayerId) -> Pos2 {
// Find first column with some available space at the bottom of it:
for col_bb in &column_bbs {
if col_bb.bottom() < available_rect.center().y {
if col_bb.bottom() < constrain_rect.center().y {
return pos2(col_bb.left(), col_bb.bottom() + spacing);
}
}
// Maybe we can fit a new column?
let rightmost = column_bbs.last().unwrap().right();
if rightmost + 200.0 < available_rect.right() {
if rightmost + 200.0 < constrain_rect.right() {
return pos2(rightmost + spacing, top);
}