53 lines
1.3 KiB
HTML
53 lines
1.3 KiB
HTML
<!DOCTYPE html>
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<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#unreachable" />
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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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margin: 0px;
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}
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#scroller {
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height: 500px;
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width: 500px;
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overflow: hidden;
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scroll-snap-type: both mandatory;
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}
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#unreachable {
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width: 300px;
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height: 300px;
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top: -100px;
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left: -100px;
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background-color: blue;
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scroll-snap-align: start;
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}
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#reachable {
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width: 300px;
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height: 300px;
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top: 400px;
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left: 400px;
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background-color: blue;
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scroll-snap-align: start;
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}
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</style>
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<div id="scroller">
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<div style="width: 2000px; height: 2000px;"></div>
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<div id="unreachable"></div>
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<div id="reachable"></div>
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</div>
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<script>
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test(() => {
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// Firstly move to the reachable snap position.
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scroller.scrollTo(400, 400);
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assert_equals(scroller.scrollLeft, 400);
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assert_equals(scroller.scrollTop, 400);
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// Then move to a position between the unreachable snap position and the
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// reachable position but closer to the unreachable one.
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scroller.scrollTo(100, 100);
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assert_equals(scroller.scrollLeft, 0);
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assert_equals(scroller.scrollTop, 0);
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}, "Snaps to the positions defined by the element as much as possible");
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</script>
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