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serenity/Tests/LibWeb/Text/input/css/getComputedStyle-transform.html
Sam Atkins c9c99b3c42 LibWeb: Produce resolved transform value according to spec algorithm
We now produce a `matrix3d()` value when appropriate.

Some sites (such as gsap.com) request the resolved style for `transform`
when there's no viewport paintable, but the element itself does already
have a stacking context. This fixes crashes in that case, because we now
do not access the stacking context at all.

We also do not wrap the result as a StyleValueList any more. The
returned StyleValue is only serialized and exposed to JS, so making it a
StyleValueList has no effect.
2023-10-15 07:14:39 +02:00

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HTML

<script src="../include.js"></script>
<script>
test(() => {
const e = document.createElement("div");
document.body.appendChild(e);
function checkTransform(transform) {
e.style.transform = transform;
const computedStyle = getComputedStyle(e);
const serialized = computedStyle.transform;
println(transform + " => " + serialized);
}
for (transform of [
"none",
"matrix(1, 2, 3, 4, 5, 6)",
"matrix3d(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)",
"translate(1%, 2px)",
"translate3d(1%, 2px, 3em)",
"translateX(1px)",
"translateY(1%)",
"scale(1, 2)",
"scaleX(2)",
"scaleY(2.5)",
"rotate(1deg)",
"rotateX(1rad)",
"rotateY(1grad)",
"rotateZ(1turn)",
"skew(1deg, 1rad)",
"skewX(1deg)",
"skewY(1rad)",
]) {
checkTransform(transform);
}
e.remove();
});
</script>