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libservo: Add a WebView::take_screenshot() API and use it for reftests

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Co-authored-by: Delan Azabani <dazabani@igalia.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
This commit is contained in:
Martin Robinson 2025-09-26 09:24:24 +02:00
parent 92dd54b1ec
commit ebb12cb298
25 changed files with 481 additions and 414 deletions
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36
components/script/script_thread.rs
View file

@ -38,8 +38,9 @@ use canvas_traits::webgl::WebGLPipeline;
use chrono::{DateTime, Local};
use compositing_traits::{CrossProcessCompositorApi, PipelineExitSource};
use constellation_traits::{
JsEvalResult, LoadData, LoadOrigin, NavigationHistoryBehavior, ScriptToConstellationChan,
ScriptToConstellationMessage, StructuredSerializedData, WindowSizeType,
JsEvalResult, LoadData, LoadOrigin, NavigationHistoryBehavior, ScreenshotReadinessResponse,
ScriptToConstellationChan, ScriptToConstellationMessage, StructuredSerializedData,
WindowSizeType,
};
use crossbeam_channel::unbounded;
use data_url::mime::Mime;
@ -1302,17 +1303,14 @@ impl ScriptThread {
}
}
/// If waiting for an idle `Pipeline` state in order to dump a screenshot at
/// the right time, inform the `Constellation` this `Pipeline` has entered
/// the idle state when applicable.
fn maybe_send_idle_document_state_to_constellation(&self) {
if !opts::get().wait_for_stable_image {
return;
}
/// If any `Pipeline`s are waiting to become ready for the purpose of taking a
/// screenshot, check to see if the `Pipeline` is now ready and send a message to the
/// Constellation, if so.
fn maybe_resolve_pending_screenshot_readiness_requests(&self) {
for (_, document) in self.documents.borrow().iter() {
document
.window()
.maybe_send_idle_document_state_to_constellation();
.maybe_resolve_pending_screenshot_readiness_requests();
}
}
@ -1539,7 +1537,7 @@ impl ScriptThread {
self.update_the_rendering(can_gc);
self.maybe_fulfill_font_ready_promises(can_gc);
self.maybe_send_idle_document_state_to_constellation();
self.maybe_resolve_pending_screenshot_readiness_requests();
// This must happen last to detect if any change above makes a rendering update necessary.
self.maybe_schedule_rendering_opportunity_after_ipc_message(built_any_display_lists);
@ -1916,6 +1914,9 @@ impl ScriptThread {
document.event_handler().do_keyboard_scroll(scroll);
}
},
ScriptThreadMessage::RequestScreenshotReadiness(pipeline_id) => {
self.handle_request_screenshot_readiness(pipeline_id);
},
}
}
@ -4024,6 +4025,19 @@ impl ScriptThread {
pub(crate) fn is_servo_privileged(url: ServoUrl) -> bool {
with_script_thread(|script_thread| script_thread.privileged_urls.contains(&url))
}
fn handle_request_screenshot_readiness(&self, pipeline_id: PipelineId) {
let Some(window) = self.documents.borrow().find_window(pipeline_id) else {
let _ = self.senders.pipeline_to_constellation_sender.send((
pipeline_id,
ScriptToConstellationMessage::RespondToScreenshotReadinessRequest(
ScreenshotReadinessResponse::NoLongerActive,
),
));
return;
};
window.request_screenshot_readiness();
}
}
impl Drop for ScriptThread {