transform-with-page-zoom-003.html | Explore in Territory

<!DOCTYPE html>
<html>
<script src="./resources/test-runner-paint-worklet.js"></script>
<style>
html, body { margin: 0; padding: 0; }
.container {
  width: 100px;
  height: 100px;
}

#canvas-geometry {
  background-image: paint(geometry);
}
</style>
<body>
<div id="canvas-geometry" class="container"></div>

<script id="code" type="text/worklet">
registerPaint('geometry', class {
    paint(ctx, geom) {
        ctx.rotate(45 * Math.PI / 180);
        ctx.translate(20, 30);
        var epsilon = 0.000001;
        if (Math.abs(ctx.getTransform().a - 0.7071067811865476) < epsilon &&
            Math.abs(ctx.getTransform().b - 0.7071067811865476) < epsilon &&
            Math.abs(ctx.getTransform().c + 0.7071067811865476) < epsilon &&
            Math.abs(ctx.getTransform().d - 0.7071067811865476) < epsilon &&
            Math.abs(ctx.getTransform().e + 7.071067811865476) < epsilon &&
            Math.abs(ctx.getTransform().f - 35.35533905932738) < epsilon)
            ctx.fillStyle = 'green';
        else
            ctx.fillStyle = 'red';
        ctx.fillRect(0, 0, geom.width, geom.height);
    }
});
</script>

<script>
    document.body.style.zoom = "200%";
    importPaintWorkletThenEndTest(document.getElementById('code').textContent);
</script>
</body>
</html>

chromium/third_party/blink/web_tests/http/tests/csspaint/transform-with-page-zoom-003.html