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serenity/Userland/Libraries/LibWeb/Animations/Animation.h
2023-11-11 22:45:16 +01:00

111 lines
4 KiB
C++

/*
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <LibJS/Runtime/PromiseCapability.h>
#include <LibWeb/Bindings/AnimationPrototype.h>
#include <LibWeb/DOM/EventTarget.h>
namespace Web::Animations {
// https://www.w3.org/TR/web-animations-1/#the-animation-interface
class Animation : public DOM::EventTarget {
WEB_PLATFORM_OBJECT(Animation, DOM::EventTarget);
public:
static JS::NonnullGCPtr<Animation> create(JS::Realm&, JS::GCPtr<AnimationEffect>, JS::GCPtr<AnimationTimeline>);
static WebIDL::ExceptionOr<JS::NonnullGCPtr<Animation>> construct_impl(JS::Realm&, JS::GCPtr<AnimationEffect>, JS::GCPtr<AnimationTimeline>);
FlyString const& id() const { return m_id; }
void set_id(FlyString value) { m_id = move(value); }
JS::GCPtr<AnimationEffect> effect() const { return m_effect; }
void set_effect(JS::GCPtr<AnimationEffect>);
JS::GCPtr<AnimationTimeline> timeline() const { return m_timeline; }
void set_timeline(JS::GCPtr<AnimationTimeline>);
Optional<double> const& start_time() const { return m_start_time; }
void set_start_time(Optional<double> const&);
Optional<double> current_time() const;
WebIDL::ExceptionOr<void> set_current_time(Optional<double> const&);
double playback_rate() const { return m_playback_rate; }
WebIDL::ExceptionOr<void> set_playback_rate(double value);
Bindings::AnimationPlayState play_state() const;
Bindings::AnimationReplaceState replace_state() const { return m_replace_state; }
// https://www.w3.org/TR/web-animations-1/#dom-animation-ready
JS::NonnullGCPtr<JS::Object> ready() const { return *current_ready_promise()->promise(); }
// https://www.w3.org/TR/web-animations-1/#dom-animation-finished
JS::NonnullGCPtr<JS::Object> finished() const { return *current_finished_promise()->promise(); }
protected:
Animation(JS::Realm&);
virtual void initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
private:
enum class TaskState {
None,
Pending,
RunAsSoonAsReady,
};
void apply_any_pending_playback_rate();
WebIDL::ExceptionOr<void> silently_set_current_time(Optional<double>);
JS::NonnullGCPtr<WebIDL::Promise> current_ready_promise() const;
JS::NonnullGCPtr<WebIDL::Promise> current_finished_promise() const;
// https://www.w3.org/TR/web-animations-1/#dom-animation-id
FlyString m_id;
// https://www.w3.org/TR/web-animations-1/#dom-animation-effect
JS::GCPtr<AnimationEffect> m_effect;
// https://www.w3.org/TR/web-animations-1/#dom-animation-timeline
JS::GCPtr<AnimationTimeline> m_timeline;
// https://www.w3.org/TR/web-animations-1/#animation-start-time
Optional<double> m_start_time {};
// https://www.w3.org/TR/web-animations-1/#animation-hold-time
Optional<double> m_hold_time {};
// https://www.w3.org/TR/web-animations-1/#previous-current-time
Optional<double> m_previous_current_time {};
// https://www.w3.org/TR/web-animations-1/#playback-rate
double m_playback_rate { 1.0 };
// https://www.w3.org/TR/web-animations-1/#pending-playback-rate
Optional<double> m_pending_playback_rate {};
// https://www.w3.org/TR/web-animations-1/#dom-animation-replacestate
Bindings::AnimationReplaceState m_replace_state { Bindings::AnimationReplaceState::Active };
// Note: The following promises are initialized lazily to avoid constructing them outside of an execution context
// https://www.w3.org/TR/web-animations-1/#current-ready-promise
mutable JS::GCPtr<WebIDL::Promise> m_current_ready_promise;
// https://www.w3.org/TR/web-animations-1/#current-finished-promise
mutable JS::GCPtr<WebIDL::Promise> m_current_finished_promise;
// https://www.w3.org/TR/web-animations-1/#pending-play-task
TaskState m_pending_play_task { TaskState::None };
// https://www.w3.org/TR/web-animations-1/#pending-pause-task
TaskState m_pending_pause_task { TaskState::None };
};
}