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https://github.com/RGBCube/serenity
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bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
82 lines
3.3 KiB
C++
82 lines
3.3 KiB
C++
/*
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* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Heap/Heap.h>
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#include <LibJS/Runtime/Realm.h>
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#include <LibWeb/Animations/DocumentTimeline.h>
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#include <LibWeb/DOM/Document.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::Animations {
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JS_DEFINE_ALLOCATOR(DocumentTimeline);
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JS::NonnullGCPtr<DocumentTimeline> DocumentTimeline::create(JS::Realm& realm, DOM::Document& document, HighResolutionTime::DOMHighResTimeStamp origin_time)
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{
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return realm.heap().allocate<DocumentTimeline>(realm, realm, document, origin_time);
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}
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// https://www.w3.org/TR/web-animations-1/#dom-documenttimeline-documenttimeline
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WebIDL::ExceptionOr<JS::NonnullGCPtr<DocumentTimeline>> DocumentTimeline::construct_impl(JS::Realm& realm, DocumentTimelineOptions options)
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{
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// Creates a new DocumentTimeline. The Document with which the timeline is associated is the Document associated
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// with the Window that is the current global object.
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auto& window = verify_cast<HTML::Window>(realm.global_object());
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return create(realm, window.associated_document(), options.origin_time);
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}
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// https://www.w3.org/TR/web-animations-1/#ref-for-timeline-time-to-origin-relative-time
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Optional<double> DocumentTimeline::convert_a_timeline_time_to_an_original_relative_time(Optional<double> timeline_time)
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{
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// To convert a timeline time, timeline time, to an origin-relative time for a document timeline, timeline, return
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// the sum of the timeline time and timeline’s origin time. If timeline is inactive, return an unresolved time
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// value.
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if (is_inactive() || !timeline_time.has_value())
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return {};
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return timeline_time.value() + m_origin_time;
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}
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// https://www.w3.org/TR/web-animations-1/#origin-time
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WebIDL::ExceptionOr<void> DocumentTimeline::set_current_time(Optional<double> current_time)
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{
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// A document timeline is a type of timeline that is associated with a document and whose current time is calculated
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// as a fixed offset from the now timestamp provided each time the update animations and send events procedure is
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// run. This fixed offset is referred to as the document timeline’s origin time.
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if (!current_time.has_value())
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TRY(Base::set_current_time({}));
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else
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TRY(Base::set_current_time(current_time.value() - m_origin_time));
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// After a document timeline becomes active, it is monotonically increasing.
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if (!is_inactive())
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VERIFY(is_monotonically_increasing());
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return {};
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}
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// https://www.w3.org/TR/web-animations-1/#document-timelines
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bool DocumentTimeline::is_inactive() const
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{
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// A document timeline that is associated with a Document which is not an active document is also considered to be
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// inactive.
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return Base::is_inactive() || !associated_document()->is_active();
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}
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DocumentTimeline::DocumentTimeline(JS::Realm& realm, DOM::Document& document, HighResolutionTime::DOMHighResTimeStamp origin_time)
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: AnimationTimeline(realm)
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, m_origin_time(origin_time)
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{
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set_associated_document(document);
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}
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void DocumentTimeline::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::DocumentTimelinePrototype>(realm, "DocumentTimeline"));
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}
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}
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