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LibWeb: Add a few Animation/AnimationEffect getters

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Matthew Olsson 2024-02-03 18:54:49 -07:00 • committed by Andreas Kling
parent 06a8674eec
commit 145ae54718
5 changed files with 55 additions and 1 deletions
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41
Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
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@ -7,6 +7,7 @@
#include <LibJS/Runtime/VM.h>
#include <LibWeb/Animations/Animation.h>
#include <LibWeb/Animations/AnimationEffect.h>
#include <LibWeb/Animations/AnimationTimeline.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/DOM/Element.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
@ -264,6 +265,46 @@ Optional<double> AnimationEffect::active_time_using_fill(Bindings::FillMode fill
return {};
}
// https://www.w3.org/TR/web-animations-1/#in-play
bool AnimationEffect::is_in_play() const
{
// An animation effect is in play if all of the following conditions are met:
// - the animation effect is in the active phase, and
// - the animation effect is associated with an animation that is not finished.
return is_in_the_active_phase() && m_associated_animation && !m_associated_animation->is_finished();
}
// https://www.w3.org/TR/web-animations-1/#current
bool AnimationEffect::is_current() const
{
// An animation effect is current if any of the following conditions are true:
// - the animation effect is in play, or
if (is_in_play())
return true;
if (auto animation = m_associated_animation) {
auto playback_rate = animation->playback_rate();
// - the animation effect is associated with an animation with a playback rate > 0 and the animation effect is
// in the before phase, or
if (playback_rate > 0.0 && is_in_the_before_phase())
return true;
// - the animation effect is associated with an animation with a playback rate < 0 and the animation effect is
// in the after phase, or
if (playback_rate < 0.0 && is_in_the_after_phase())
return true;
// - the animation effect is associated with an animation not in the idle play state with a non-null associated
// timeline that is not monotonically increasing.
if (animation->play_state() != Bindings::AnimationPlayState::Idle && animation->timeline() && !animation->timeline()->is_monotonically_increasing())
return true;
}
return false;
}
// https://www.w3.org/TR/web-animations-1/#in-effect
bool AnimationEffect::is_in_effect() const
{