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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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58
crates/egui_kittest/src/app_kind.rs
View File

@@ -24,58 +24,60 @@ pub(crate) enum AppKind<'a, State> {
impl<State> AppKind<'_, State> {
pub fn run(
&mut self,
ctx: &egui::Context,
ui: &mut egui::Ui,
state: &mut State,
sizing_pass: bool,
) -> Option<egui::Response> {
match self {
AppKind::Context(f) => {
debug_assert!(!sizing_pass, "Context closures cannot do a sizing pass");
f(ctx);
f(ui);
None
}
AppKind::ContextState(f) => {
debug_assert!(!sizing_pass, "Context closures cannot do a sizing pass");
f(ctx, state);
f(ui, state);
None
}
#[cfg(feature = "eframe")]
AppKind::Eframe((get_app, frame)) => {
let app = get_app(state);
app.update(ctx, frame);
app.logic(ui, frame);
#[expect(deprecated)]
app.update(ui, frame);
app.ui(ui, frame);
None
}
kind_ui => Some(kind_ui.run_ui(ctx, state, sizing_pass)),
kind_ui => Some(kind_ui.run_ui(ui, state, sizing_pass)),
}
}
fn run_ui(
&mut self,
ctx: &egui::Context,
ui: &mut egui::Ui,
state: &mut State,
sizing_pass: bool,
) -> egui::Response {
egui::CentralPanel::default()
.frame(Frame::NONE)
.show(ctx, |ui| {
let mut builder = egui::UiBuilder::new();
if sizing_pass {
builder.sizing_pass = true;
}
ui.scope_builder(builder, |ui| {
Frame::central_panel(ui.style())
.outer_margin(8.0)
.inner_margin(0.0)
.show(ui, |ui| match self {
AppKind::Ui(f) => f(ui),
AppKind::UiState(f) => f(ui, state),
_ => unreachable!(
"run_ui should only be called with AppKind::Ui or AppKind UiState"
),
});
})
.response
})
.inner
let mut builder = egui::UiBuilder::new();
if sizing_pass {
builder.sizing_pass = true;
}
ui.scope_builder(builder, |ui| {
Frame::central_panel(ui.style())
.outer_margin(8.0)
.inner_margin(0.0)
.show(ui, |ui| match self {
AppKind::Ui(f) => f(ui),
AppKind::UiState(f) => f(ui, state),
_ => unreachable!(
"run_ui should only be called with AppKind::Ui or AppKind UiState"
),
});
})
.response
}
}