f58339de7f
This method did two things: 1) on the base class (`AnimationTimeline`) it was a setter for `m_current_time` and; 2) on the child classes (e.g. `DocumentTimeline`) it updated the timeline's current time given a document timestamp It makes more sense for theses to be distinct methods
90 lines
4 KiB
C++
90 lines
4 KiB
C++
/*
|
||
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>.
|
||
*
|
||
* SPDX-License-Identifier: BSD-2-Clause
|
||
*/
|
||
|
||
#include <LibGC/Heap.h>
|
||
#include <LibJS/Runtime/Realm.h>
|
||
#include <LibWeb/Animations/DocumentTimeline.h>
|
||
#include <LibWeb/Bindings/DocumentTimelinePrototype.h>
|
||
#include <LibWeb/DOM/Document.h>
|
||
#include <LibWeb/HTML/Window.h>
|
||
#include <LibWeb/HighResolutionTime/Performance.h>
|
||
#include <LibWeb/HighResolutionTime/TimeOrigin.h>
|
||
#include <LibWeb/WebIDL/ExceptionOr.h>
|
||
|
||
namespace Web::Animations {
|
||
|
||
GC_DEFINE_ALLOCATOR(DocumentTimeline);
|
||
|
||
GC::Ref<DocumentTimeline> DocumentTimeline::create(JS::Realm& realm, DOM::Document& document, HighResolutionTime::DOMHighResTimeStamp origin_time)
|
||
{
|
||
auto timeline = realm.create<DocumentTimeline>(realm, document, origin_time);
|
||
auto current_time = document.last_animation_frame_timestamp();
|
||
if (!current_time.has_value()) {
|
||
// The document hasn't processed an animation frame yet, we use the navigation start time, which is either the time
|
||
// that the previous document started to be unloaded or the creation time of the current document.
|
||
current_time = HighResolutionTime::relative_high_resolution_time(document.load_timing_info().navigation_start_time, realm.global_object());
|
||
}
|
||
timeline->update_current_time(current_time.value());
|
||
return timeline;
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#dom-documenttimeline-documenttimeline
|
||
WebIDL::ExceptionOr<GC::Ref<DocumentTimeline>> DocumentTimeline::construct_impl(JS::Realm& realm, DocumentTimelineOptions options)
|
||
{
|
||
// Creates a new DocumentTimeline. The Document with which the timeline is associated is the Document associated
|
||
// with the Window that is the current global object.
|
||
auto& window = as<HTML::Window>(realm.global_object());
|
||
return create(realm, window.associated_document(), options.origin_time);
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#ref-for-timeline-time-to-origin-relative-time
|
||
Optional<double> DocumentTimeline::convert_a_timeline_time_to_an_origin_relative_time(Optional<double> timeline_time)
|
||
{
|
||
// To convert a timeline time, timeline time, to an origin-relative time for a document timeline, timeline, return
|
||
// the sum of the timeline time and timeline’s origin time. If timeline is inactive, return an unresolved time
|
||
// value.
|
||
if (is_inactive() || !timeline_time.has_value())
|
||
return {};
|
||
return timeline_time.value() + m_origin_time;
|
||
}
|
||
|
||
// https://drafts.csswg.org/web-animations-1/#document-timeline
|
||
void DocumentTimeline::update_current_time(double timestamp)
|
||
{
|
||
// A document timeline is a type of timeline that is associated with a document and whose current time is calculated
|
||
// as a fixed offset from the now timestamp provided each time the update animations and send events procedure is
|
||
// run. This fixed offset is equal to the current time of the default document timeline when this timeline’s current
|
||
// time was zero, and is thus referred to as the document timeline’s origin time.
|
||
set_current_time(timestamp - m_origin_time);
|
||
|
||
// https://drafts.csswg.org/web-animations-1/#ref-for-active-timeline
|
||
// After a document timeline becomes active, it is monotonically increasing.
|
||
if (!m_is_monotonically_increasing && !is_inactive())
|
||
m_is_monotonically_increasing = true;
|
||
}
|
||
|
||
// https://www.w3.org/TR/web-animations-1/#document-timelines
|
||
bool DocumentTimeline::is_inactive() const
|
||
{
|
||
// A document timeline that is associated with a Document which is not an active document is also considered to be
|
||
// inactive.
|
||
return Base::is_inactive() || !associated_document()->is_active();
|
||
}
|
||
|
||
DocumentTimeline::DocumentTimeline(JS::Realm& realm, DOM::Document& document, HighResolutionTime::DOMHighResTimeStamp origin_time)
|
||
: AnimationTimeline(realm)
|
||
, m_origin_time(origin_time)
|
||
{
|
||
set_associated_document(document);
|
||
}
|
||
|
||
void DocumentTimeline::initialize(JS::Realm& realm)
|
||
{
|
||
WEB_SET_PROTOTYPE_FOR_INTERFACE(DocumentTimeline);
|
||
Base::initialize(realm);
|
||
}
|
||
|
||
}
|