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eframe: Replace Frame::update with fn logic and fn ui (#7775)

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* Part of https://github.com/emilk/egui/issues/5113
* Part of https://github.com/emilk/egui/issues/3524

## What
This deprecates `eframe::App::update` and replaces it with two new
functions:

```rs
pub trait App {
	/// Called just before `ui`, and in the future this will
    /// also be called for background apps when needed.
	fn logic(&mut self, ctx: &egui::Context, frame: &mut Frame) { }
	
    /// Show your user interface to the user.
	fn ui(&mut self, ui: &mut egui::Ui, frame: &mut Frame);

	…
}
```

Similarly, `Context::run` is deprecated in favor of `Context::run_ui`.

`Plugin`s are now handed a `Ui` instead of just a `Context` in
`on_begin/end_frame`.

## TODO
…either in this PR or a later one
* [x] Deprecate `App::update`
* [x] Deprecate `Context::run`
* [x] Change plugins to get a `Ui`
* [x] Update kittest
* [x] Change viewports to get UI:s (`show_viewport_immediate` etc)
  - https://github.com/emilk/egui/pull/7779

## Later PRs
* [ ] Deprecate `Panel::show`
* [ ] Deprecate `CentralPanel::show`
* [ ] Deprecate `CentralPanel` ?
This commit is contained in:
Emil Ernerfeldt
2025-12-16 17:05:50 +01:00
committed by GitHub
parent 9487dc35ec
commit 2f6fe9c572
52 changed files with 417 additions and 321 deletions
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8
examples/external_eventloop_async/src/app.rs
View File

@@ -76,8 +76,8 @@ impl Default for MyApp {
}
impl eframe::App for MyApp {
fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
egui::CentralPanel::default().show(ctx, |ui| {
fn ui(&mut self, ui: &mut egui::Ui, _frame: &mut eframe::Frame) {
egui::CentralPanel::default().show_inside(ui, |ui| {
ui.heading("My External Eventloop Application");
ui.horizontal(|ui| {
@@ -86,7 +86,7 @@ impl eframe::App for MyApp {
}
if ui.button("Increment Later").clicked() {
let value = self.value.clone();
let ctx = ctx.clone();
let ctx = ui.ctx().clone();
tokio::task::spawn_local(async move {
tokio::time::sleep(Duration::from_secs(1)).await;
value.set(value.get() + 1);
@@ -123,7 +123,7 @@ impl eframe::App for MyApp {
ui.label("Blinky!");
});
ctx.request_repaint_after_secs((0.5 - (now % 0.5)) as f32);
ui.request_repaint_after_secs((0.5 - (now % 0.5)) as f32);
}
});
}