[webkit-changes] [WebKit/WebKit] bcd8cc: [web-animations] add basic interpolation support f...

[Antoine Quint]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: bcd8cc0c0c83b0f2ddb78977a843650168bb138f
      https://github.com/WebKit/WebKit/commit/bcd8cc0c0c83b0f2ddb78977a843650168bb138f
  Author: Antoine Quint <graouts at apple.com>
  Date:   2022-12-14 (Wed, 14 Dec 2022)

  Changed paths:
    M LayoutTests/imported/w3c/web-platform-tests/css/css-animations/animation-important-001-expected.txt
    A LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/animation/custom-property-animation-length-expected.txt
    A LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/animation/custom-property-animation-length.html
    M LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/font-size-animation-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/registered-property-revert-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/resources/utils.js
    M Source/WebCore/animation/CSSPropertyAnimation.cpp
    M Source/WebCore/animation/CSSPropertyAnimation.h
    M Source/WebCore/animation/KeyframeEffect.cpp

  Log Message:
  -----------
  [web-animations] add basic interpolation support for <length> custom properties
https://bugs.webkit.org/show_bug.cgi?id=249312

Reviewed by Antti Koivisto.

Add very basic interpolation support for custom properties starting with only with
the <length> type and only dealing with non-additive and non-accumulative animations
with explicit keyframe values.

We add a new WPT test for <length> that draws the blueprint for the remaining work.

* LayoutTests/imported/w3c/web-platform-tests/css/css-animations/animation-important-001-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/animation/custom-property-animation-length-expected.txt: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/animation/custom-property-animation-length.html: Added.
* LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/font-size-animation-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/registered-property-revert-expected.txt:
* LayoutTests/imported/w3c/web-platform-tests/css/css-properties-values-api/resources/utils.js:
* Source/WebCore/animation/CSSPropertyAnimation.cpp:
(WebCore::blendSyntaxValues):
(WebCore::blendedCSSCustomPropertyValue):
(WebCore::CSSPropertyAnimation::blendCustomProperty):
* Source/WebCore/animation/CSSPropertyAnimation.h:
* Source/WebCore/animation/KeyframeEffect.cpp:
(WebCore::KeyframeEffect::setAnimatedPropertiesInStyle):

Canonical link: https://commits.webkit.org/257906@main