61 lines
1.7 KiB
HTML
61 lines
1.7 KiB
HTML
<!DOCTYPE html>
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<link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#scroll-snap-stop" />
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<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#snap-overflow" />
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<style>
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div {
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position: absolute;
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}
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.scroller {
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width: 400px;
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height: 100px;
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overflow: scroll;
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scroll-snap-type: x mandatory;
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}
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#space {
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left: 0px;
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top: 0px;
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width: 2100px;
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height: 50px;
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}
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.target {
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width: 50px;
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height: 50px;
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scroll-snap-align: start;
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top: 0px;
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}
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</style>
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<div class="scroller" id="scroller7">
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<div id="space"></div>
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<div class="target" style="left: 0px;"></div>
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<div class="target" style="left: 400px; width: 900px;"></div>
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<div class="target" style="left: 900px; scroll-snap-stop: always;"></div
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</div>
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<script>
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test(() => {
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assert_equals(scroller7.scrollLeft, 0);
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assert_equals(scroller7.scrollTop, 0);
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// start dest always
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// |-------------------------|================|=====|=====
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// 0 400 700 900
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// Scoll on the element whose snap area is larger than the snapport.
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scroller7.scrollBy(600, 0);
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// Stops before the smaller snap area @ 900px enters the snapport.
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assert_equals(scroller7.scrollLeft + scroller7.clientWidth, 900);
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assert_equals(scroller7.scrollTop, 0);
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scroller7.scrollTo(0, 0);
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scroller7.scrollBy(800, 0);
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// Now the smaller snap area is closer, so we snap to it.
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assert_equals(scroller7.scrollLeft, 900);
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assert_equals(scroller7.scrollTop, 0);
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}, "`scroll-snap-stop: always` snap point is further than the scroll " +
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"destination and a snap area covers the snapport");
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</script>
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