78 lines
2.1 KiB
HTML
78 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<head>
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<title>glyph clipping (test)</title>
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<style>
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#clip { position: absolute;
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overflow: hidden;
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font-size: 16px;
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width: 500px;
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height: 300px;}
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/* Offsets keep the text far enough away from clip boundaries so that
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cairo knows the text is within the clip. Non-unit alpha color makes
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the bug show even without antialiasing. */
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#text { position: absolute;
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left: 100px;
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top: 100px;
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color: rgba(0,0,0,0.4)}
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#cover { position: absolute;
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top: 90px;
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left: 120px;
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height: 50px;
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width: 60px;
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background: green; }
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#mod { position: absolute;
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top: 400px;
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left: 0px;
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height: 2000px;
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width: 600px;
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background: green; }
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</style>
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<script>
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function doPaint()
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{
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window.addEventListener("MozAfterPaint", doScroll);
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var cover = document.getElementById("cover");
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cover.style.background = "transparent";
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var mod = document.getElementById("mod");
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mod.style.background = "transparent";
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}
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async function doScroll()
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{
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window.removeEventListener("MozAfterPaint", doScroll);
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// wait to flush out any more paints
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await new Promise(resolve => requestAnimationFrame(resolve));
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await new Promise(resolve => requestAnimationFrame(resolve));
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scrollTo(0,1);
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// scrolling doesn't seem to generate a mozafterpaint, but it should be
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// handled after one refresh driver tick, and then the reftest harness will
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// handle making sure everything is sync'ed up for the final snapshot.
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await new Promise(resolve => requestAnimationFrame(resolve));
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await new Promise(resolve => requestAnimationFrame(resolve));
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setTimeout(endTest,0);
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}
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function endTest()
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{
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document.documentElement.removeAttribute("class");
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}
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document.addEventListener("MozReftestInvalidate", doPaint);
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</script>
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</head>
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<body>
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<div id="clip">
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<div id="text">
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Some text that was</br>
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initially partially covered.</br>
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</div>
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</div>
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<div id="cover">
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</div>
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<div id="mod">
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</div>
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</body>
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</html>
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