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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /html/canvas/element/manual/draw-element-image/privacy/svg-radial-gradient-outside-subtree-ignored.tentative.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<html>
<head>
<title>drawElementImage does not use SVG resources from outside the subtree</title>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src="/html/canvas/resources/wait-for-canvas-paint.js"></script>
<style>
a {
color: blue;
}
a:visited {
color: red;
}
canvas {
background-color: green;
}
</style>
</head>
<body>
<a href="">
<svg width="0" height="0">
<defs>
<radialGradient id="grad-outside">
<stop offset="0" stop-color="currentColor"/>
<stop offset="1" stop-color="currentColor"/>
</radialGradient>
</defs>
</svg>
</a>
<canvas id="canvas" width="100" height="100" layoutsubtree>
<div id="child">
<svg width="100" height="100">
<rect x="0" y="0" width="100" height="100" fill="url(#grad-outside)"/>
</svg>
</div>
</canvas>
<script>
window.onload = () => {
promise_test(async function(t) {
await waitForCanvasPaint(canvas);
var context = canvas.getContext("2d");
context.fillStyle = 'green';
context.fillRect(0, 0, 100, 100);
// Draw the element image
context.drawElementImage(child, 0, 0);
// The canvas should ignore the gradient and use transparent black.
let pixel = context.getImageData(50, 50, 1, 1).data;
assert_false(pixel[0] > 0, "The canvas should not use the gradient.");
assert_true(pixel[1] > 0, "The canvas should not use the gradient.");
assert_false(pixel[2] > 0, "The canvas should not use the gradient.");
});
};
</script>
</body>
</html>