migrations/egui
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Add a dummy warm-up frame to the demo app to pre-cache emojis

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This commit is contained in:
Emil Ernerfeldt
2021-01-02 14:42:43 +01:00
parent 4202c4b6a9
commit 14a96ca5d0
14 changed files with 144 additions and 55 deletions
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17
egui_web/src/backend.rs
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@@ -179,6 +179,20 @@ impl AppRunner {
self.web_backend.canvas_id()
}
pub fn warm_up(&mut self) -> Result<(), JsValue> {
if self.app.warm_up_enabled() {
let saved_memory = self.web_backend.ctx.memory().clone();
self.web_backend
.ctx
.memory()
.set_everything_is_visible(true);
self.logic()?;
*self.web_backend.ctx.memory() = saved_memory; // We don't want to remember that windows were huge.
self.web_backend.ctx.clear_animations();
}
Ok(())
}
pub fn logic(&mut self) -> Result<(egui::Output, egui::PaintJobs), JsValue> {
resize_canvas_to_screen_size(self.web_backend.canvas_id());
let canvas_size = canvas_size_in_points(self.web_backend.canvas_id());
@@ -227,7 +241,8 @@ impl AppRunner {
/// and start running the given app.
pub fn start(canvas_id: &str, app: Box<dyn epi::App>) -> Result<AppRunnerRef, JsValue> {
let backend = WebBackend::new(canvas_id)?;
let runner = AppRunner::new(backend, app)?;
let mut runner = AppRunner::new(backend, app)?;
runner.warm_up()?;
start_runner(runner)
}