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libservo: Rework and clarify the rendering model of the WebView (#35522)

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Make the rendering model of the `WebView` clearer:

1. `WebViewDelegate::notify_new_frame_ready()` indicates that the
   WebView has become dirty and needs to be repainted.
2. `WebView::paint()` asks Servo to paint the contents of the `WebView`
   into the `RenderingContext`.
3. `RenderingContext::present()` does a buffer swap if the
   `RenderingContext` is actually double-buffered.

This is documented and all in-tree embedders are updated to work with
this new model.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Ngo Iok Ui (Wu Yu Wei) <yuweiwu@pm.me>
Co-authored-by: Mukilan Thiyagarajan <mukilan@igalia.com>
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Martin Robinson 2025-02-19 11:35:56 +01:00 • committed by GitHub
parent 56840e0a35
commit e5c9a0365d
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10 changed files with 129 additions and 160 deletions
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4
ports/servoshell/egl/app_state.rs
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@ -680,8 +680,8 @@ impl RunningAppState {
pub fn present_if_needed(&self) {
if self.inner().need_present {
self.inner_mut().need_present = false;
self.active_webview().paint_immediately();
self.servo.present();
self.active_webview().paint();
self.rendering_context.present();
}
}
}