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Clamp panel rects to visible bounds #8056

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Clamp panel rects to visible bounds #8056

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a3161c3
Clamp panel rects to visible bounds
enomado Apr 2, 2026
054cb04
Clamp panel interact rect to visible bounds
enomado Apr 2, 2026
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14 changes: 10 additions & 4 deletions crates/egui/src/containers/panel.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -289,12 +289,15 @@ impl SidePanel {
panel_ui.set_clip_rect(panel_rect); // If we overflow, don't do so visibly (#4475)

let frame = frame.unwrap_or_else(|| Frame::side_top_panel(ui.style()));
let inner_response = frame.show(&mut panel_ui, |ui| {
let mut inner_response = frame.show(&mut panel_ui, |ui| {
ui.set_min_height(ui.max_rect().height()); // Make sure the frame fills the full height
ui.set_min_width((width_range.min - frame.inner_margin.sum().x).at_least(0.0));
add_contents(ui)
});

inner_response.response.rect = inner_response.response.rect.intersect(panel_rect);
inner_response.response.interact_rect =
inner_response.response.interact_rect.intersect(panel_rect);
let rect = inner_response.response.rect;

{
Expand Down Expand Up @@ -391,7 +394,7 @@ impl SidePanel {
panel_ui.set_clip_rect(ctx.screen_rect());

let inner_response = self.show_inside_dyn(&mut panel_ui, add_contents);
let rect = inner_response.response.rect;
let rect = inner_response.response.rect.intersect(available_rect);

match side {
Side::Left => ctx.pass_state_mut(|state| {
Expand Down Expand Up @@ -785,12 +788,15 @@ impl TopBottomPanel {
panel_ui.expand_to_include_rect(panel_rect);
panel_ui.set_clip_rect(panel_rect); // If we overflow, don't do so visibly (#4475)

let inner_response = frame.show(&mut panel_ui, |ui| {
let mut inner_response = frame.show(&mut panel_ui, |ui| {
ui.set_min_width(ui.max_rect().width()); // Make the frame fill full width
ui.set_min_height((height_range.min - frame.inner_margin.sum().y).at_least(0.0));
add_contents(ui)
});

inner_response.response.rect = inner_response.response.rect.intersect(panel_rect);
inner_response.response.interact_rect =
inner_response.response.interact_rect.intersect(panel_rect);
let rect = inner_response.response.rect;

{
Expand Down Expand Up @@ -889,7 +895,7 @@ impl TopBottomPanel {
panel_ui.set_clip_rect(ctx.screen_rect());

let inner_response = self.show_inside_dyn(&mut panel_ui, add_contents);
let rect = inner_response.response.rect;
let rect = inner_response.response.rect.intersect(available_rect);

match side {
TopBottomSide::Top => {
Expand Down