79 lines
2 KiB
HTML
79 lines
2 KiB
HTML
<!doctype HTML>
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<html>
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<meta charset="utf8">
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<title>Display Locking: measure forced SVG text</title>
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<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
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<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
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<meta name="assert" content="content-visibility hidden svg descendant has correct layout">
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<style>
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#container {
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width: 100px;
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height: 100px;
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background: lightgreen;
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}
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.hidden {
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content-visibility: hidden;
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}
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</style>
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<div id="parent"></div>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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async_test((t) => {
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let length;
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function measureForced() {
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t.step(() => {
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length = document.getElementById("text").getComputedTextLength();
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assert_not_equals(length, 0, "forced");
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});
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}
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function measureWhenVisible() {
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t.step(() => {
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const visible_length = document.getElementById("text").getComputedTextLength();
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assert_not_equals(visible_length, 0, "when visible");
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assert_equals(visible_length, length, "when visible");
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});
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}
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function construct(container) {
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container.innerHTML = `
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<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
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<style>
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.t { font: 10px sans-serif; }
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</style>
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<text id="text" x="10" y="10" class="t">This is text</text>
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</svg>
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`;
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}
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async function runTest() {
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const container = document.createElement("div");
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container.id = "container";
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document.getElementById("parent").appendChild(container);
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container.classList.add("hidden");
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requestAnimationFrame(() => {
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construct(container);
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measureForced();
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container.classList.remove("hidden");
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requestAnimationFrame(() => {
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measureWhenVisible();
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t.done();
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});
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});
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}
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window.onload = function() {
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requestAnimationFrame(() => requestAnimationFrame(runTest));
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};
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}, "Measure Forced SVG Text");
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</script>
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</html>
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