| <!DOCTYPE html><!-- webkit-test-runner [ experimental:CSSPaintingAPIEnabled=true ] --> |
| <meta name="author" title="Justin Michaud" href="mailto:justin_michaud@webkit.org"> |
| <meta name="assert" content="Test that paint worklets repaint when properties change"> |
| <link rel="help" content="https://drafts.css-houdini.org/css-paint-api-1/"> |
| <script src="resources/testharness.js"></script> |
| |
| <script id="code" type="text/worklet"> |
| class MyPaint { |
| static get inputProperties() { return ['--my-prop']; } |
| |
| paint(ctx, geom, properties) { |
| if (properties.get('--my-prop').toString() != "goodbye") { |
| ctx.fillStyle = "red"; |
| } else { |
| ctx.fillStyle = "green"; |
| } |
| |
| ctx.fillRect(0, 0, geom.width, geom.height); |
| } |
| } |
| registerPaint('my-paint', MyPaint); |
| </script> |
| |
| <script type="text/javascript"> |
| function onload() { |
| if (window.testRunner && window.internals) { |
| window.testRunner.dumpAsText(false); |
| window.internals.startTrackingRepaints(); |
| } |
| importWorklet(CSS.paintWorklet, document.getElementById('code').textContent); |
| |
| // FIXME: Once importWorklet returns a promise, these setTimeouts should go away. |
| setTimeout(function() { |
| document.getElementById('paint').style.setProperty('--my-prop', 'goodbye'); |
| }, 500); |
| |
| setTimeout(function() { |
| var repaintRects = "No test runner"; |
| if (window.testRunner && window.internals) { |
| // force a style recalc. |
| var dummy = document.body.offsetTop; |
| repaintRects = window.internals.repaintRectsAsText(); |
| window.internals.stopTrackingRepaints(); |
| } |
| |
| var pre = document.createElement('pre'); |
| document.body.appendChild(pre); |
| pre.innerHTML = repaintRects; |
| }, 1000); |
| } |
| </script> |
| |
| <style> |
| #paint { |
| background-image: paint(my-paint); |
| --my-prop: hello; |
| width: 150px; |
| height: 150px; |
| } |
| </style> |
| |
| <body onload="onload()"> |
| <div id="paint"></div> |
| </body> |
