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Implement repaint_after for eframe web (#1760)

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* Implement repaint_after for eframe web

Follow-up to #1694

* cargo fmt

* Simplify demo UI for "repaint_after"
This commit is contained in:
Emil Ernerfeldt
2022-06-22 14:25:42 +02:00
committed by GitHub
parent 935913b1ec
commit eeae485629
5 changed files with 73 additions and 86 deletions
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38
egui_demo_app/src/backend_panel.rs
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@@ -49,12 +49,11 @@ pub struct BackendPanel {
pub open: bool,
#[cfg_attr(feature = "serde", serde(skip))]
// go back to [`Reactive`] mode each time we start
// go back to [`RunMode::Reactive`] mode each time we start
run_mode: RunMode,
#[cfg_attr(feature = "serde", serde(skip))]
// reset to 1 second as default repaint_after idle timeout.
repaint_after_timeout: std::time::Duration,
repaint_after_seocnds: f32,
/// current slider value for current gui scale
#[cfg_attr(feature = "serde", serde(skip))]
@@ -71,7 +70,7 @@ impl Default for BackendPanel {
Self {
open: false,
run_mode: Default::default(),
repaint_after_timeout: std::time::Duration::from_secs(1),
repaint_after_seocnds: 1.0,
pixels_per_point: None,
frame_history: Default::default(),
egui_windows: Default::default(),
@@ -85,13 +84,16 @@ impl BackendPanel {
.on_new_frame(ctx.input().time, frame.info().cpu_usage);
match self.run_mode {
RunMode::Reactive => {
ctx.request_repaint_after(self.repaint_after_timeout);
}
RunMode::Continuous => {
// Tell the backend to repaint as soon as possible
ctx.request_repaint();
}
RunMode::Reactive => {
// let the computer rest for a bit
ctx.request_repaint_after(std::time::Duration::from_secs_f32(
self.repaint_after_seocnds,
));
}
}
}
@@ -243,16 +245,18 @@ impl BackendPanel {
));
} else {
ui.label("Only running UI code when there are animations or input.");
ui.label("but if there's no input for the repaint_after duration, we force an update");
ui.label("repaint_after (in seconds)");
let mut seconds = self.repaint_after_timeout.as_secs_f32();
if egui::DragValue::new(&mut seconds)
.clamp_range(0.1..=10.0)
.ui(ui)
.changed()
{
self.repaint_after_timeout = std::time::Duration::from_secs_f32(seconds);
}
ui.horizontal(|ui| {
ui.spacing_mut().item_spacing.x = 0.0;
ui.label("(but at least every ");
egui::DragValue::new(&mut self.repaint_after_seocnds)
.clamp_range(0.1..=10.0)
.speed(0.1)
.suffix(" s")
.ui(ui)
.on_hover_text("Repaint this often, even if there is no input.");
ui.label(")");
});
}
}
}