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LibWeb: Let HTML::EventLoop drive animation frame callbacks

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This commit is contained in:
Andreas Kling 2021-10-03 16:28:14 +02:00
parent ae71e5f99b
commit 81ef2b646e
3 changed files with 36 additions and 6 deletions
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18
Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
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@ -9,7 +9,9 @@
#include <LibJS/Runtime/VM.h>
#include <LibWeb/Bindings/MainThreadVM.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/DOM/Window.h>
#include <LibWeb/HTML/EventLoop/EventLoop.h>
#include <LibWeb/HighResolutionTime/Performance.h>
namespace Web::HTML {
@ -127,10 +129,21 @@ void EventLoop::process()
// FIXME: 1. Let docs be all Document objects whose relevant agent's event loop is this event loop, sorted arbitrarily except that the following conditions must be met:
// - Any Document B whose browsing context's container document is A must be listed after A in the list.
// - If there are two documents A and B whose browsing contexts are both child browsing contexts whose container documents are another Document C, then the order of A and B in the list must match the shadow-including tree order of their respective browsing context containers in C's node tree.
// FIXME: NOTE: The sort order specified above is missing here!
NonnullRefPtrVector<DOM::Document> docs = documents_in_this_event_loop();
auto for_each_fully_active_document_in_docs = [&](auto&& callback) {
for (auto& document : docs) {
if (document.is_fully_active())
callback(document);
}
};
// FIXME: 2. Rendering opportunities: Remove from docs all Document objects whose browsing context do not have a rendering opportunity.
// FIXME: 3. If docs is not empty, then set hasARenderingOpportunity to true.
// 3. If docs is not empty, then set hasARenderingOpportunity to true.
if (!docs.is_empty())
has_a_rendering_opportunity = true;
// FIXME: 4. Unnecessary rendering: Remove from docs all Document objects which meet both of the following conditions:
// - The user agent believes that updating the rendering of the Document's browsing context would have no visible effect, and
@ -153,6 +166,9 @@ void EventLoop::process()
// FIXME: 12. For each fully active Document in docs, if the user agent detects that the backing storage associated with a CanvasRenderingContext2D or an OffscreenCanvasRenderingContext2D, context, has been lost, then it must run the context lost steps for each such context:
// FIXME: 13. For each fully active Document in docs, run the animation frame callbacks for that Document, passing in now as the timestamp.
for_each_fully_active_document_in_docs([&](DOM::Document& document) {
run_animation_frame_callbacks(document, document.window().performance().now());
});
// FIXME: 14. For each fully active Document in docs, run the update intersection observations steps for that Document, passing in now as the timestamp. [INTERSECTIONOBSERVER]