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Remove some uses of top-level panels in our examples (#7729)

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We're phasing out top-level panels (panels that use `Context` directly,
instead of being inside another `Ui`).
As a first step, stop using them in our demo library and application.

* Part of https://github.com/emilk/egui/issues/3524
This commit is contained in:
Emil Ernerfeldt
2025-11-21 20:22:01 +01:00
committed by GitHub
parent d53a4a9c1d
commit d5869bfeaf
13 changed files with 165 additions and 136 deletions
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12
crates/egui_demo_app/src/apps/image_viewer.rs
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@@ -48,15 +48,15 @@ impl Default for ImageViewer {
}
}
impl eframe::App for ImageViewer {
fn update(&mut self, ctx: &egui::Context, _: &mut eframe::Frame) {
egui::Panel::top("url bar").show(ctx, |ui| {
impl crate::DemoApp for ImageViewer {
fn demo_ui(&mut self, ui: &mut egui::Ui, _: &mut eframe::Frame) {
egui::Panel::top("url bar").show_inside(ui, |ui| {
ui.horizontal_centered(|ui| {
let label = ui.label("URI:");
ui.text_edit_singleline(&mut self.uri_edit_text)
.labelled_by(label.id);
if ui.small_button("✔").clicked() {
ctx.forget_image(&self.current_uri);
ui.ctx().forget_image(&self.current_uri);
self.uri_edit_text = self.uri_edit_text.trim().to_owned();
self.current_uri = self.uri_edit_text.clone();
}
@@ -71,7 +71,7 @@ impl eframe::App for ImageViewer {
});
});
egui::Panel::left("controls").show(ctx, |ui| {
egui::Panel::left("controls").show_inside(ui, |ui| {
// uv
ui.label("UV");
ui.add(Slider::new(&mut self.image_options.uv.min.x, 0.0..=1.0).text("min x"));
@@ -197,7 +197,7 @@ impl eframe::App for ImageViewer {
}
});
egui::CentralPanel::default().show(ctx, |ui| {
egui::CentralPanel::default().show_inside(ui, |ui| {
egui::ScrollArea::both().show(ui, |ui| {
let mut image = egui::Image::from_uri(&self.current_uri);
image = image.uv(self.image_options.uv);