|  | <!DOCTYPE html> | 
|  | <html class="reftest-wait"> | 
|  | <link rel="help" href="https://drafts.css-houdini.org/css-paint-api/"> | 
|  | <link rel="match" href="one-custom-property-animation-half-opaque-ref.html"> | 
|  | <style> | 
|  | .container { | 
|  | width: 500px; | 
|  | height: 500px; | 
|  | } | 
|  | @keyframes expand { | 
|  | 0% { --foo: rgba(0, 200, 0, 1); } | 
|  | 100% { --foo: rgba(200, 0, 0, 0.6); } | 
|  | } | 
|  | .animate { | 
|  | background-image: paint(geometry); | 
|  | /* Use a long animation that start at 50% progress where the slope of the | 
|  | selected timing function is zero. By setting up the animation in this way, | 
|  | we accommodate lengthy delays in running the test without a potential drift | 
|  | in the animated property value. This is important for avoiding flakes, | 
|  | especially on debug builds. The screenshots are taken as soon as the | 
|  | animation is ready, thus the long animation duration has no bearing on | 
|  | the actual duration of the test. */ | 
|  | animation: expand 1000000s cubic-bezier(0,1,1,0) -500000s; | 
|  | will-change: transform; | 
|  | } | 
|  | </style> | 
|  |  | 
|  | <script src="/common/reftest-wait.js"></script> | 
|  | <script src="/common/worklet-reftest.js"></script> | 
|  | <body> | 
|  | <div id="canvas-geometry" class="container"></div> | 
|  |  | 
|  | <script id="code" type="text/worklet"> | 
|  | registerPaint('geometry', class { | 
|  | static get inputProperties() { return ['--foo']; } | 
|  | paint(ctx, geom, properties) { | 
|  | ctx.fillStyle = properties.get('--foo').toString(); | 
|  | ctx.fillRect(0, 0, geom.width, geom.height); | 
|  | } | 
|  | }); | 
|  | </script> | 
|  |  | 
|  | <script> | 
|  | CSS.registerProperty({ | 
|  | name: '--foo', | 
|  | syntax: '<color>', | 
|  | initialValue: 'rgb(0, 0, 0)', | 
|  | inherits: false | 
|  | }); | 
|  | </script> | 
|  |  | 
|  | <script> | 
|  | var blob = new Blob([document.getElementById('code').textContent], | 
|  | {type: 'text/javascript'}); | 
|  | CSS.paintWorklet.addModule(URL.createObjectURL(blob)).then(function() { | 
|  | document.getElementById('canvas-geometry').classList.add('animate'); | 
|  | const animations = document.getAnimations(); | 
|  | // Wait for the animation to start before completing the test. | 
|  | document.getAnimations()[0].ready.then(() => { | 
|  | takeScreenshot(); | 
|  | }); | 
|  | }); | 
|  | </script> | 
|  | </body> | 
|  | </html> |