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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/css-scroll-snap/capturing-snap-positions.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-snap/capturing-snap-positions.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-scroll-snap/capturing-snap-positions.html | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-snap/capturing-snap-positions.html b/testing/web-platform/tests/css/css-scroll-snap/capturing-snap-positions.html new file mode 100644 index 0000000000..7bc96b9d33 --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-snap/capturing-snap-positions.html @@ -0,0 +1,55 @@ +<!doctype html> +<meta charset=utf-8> +<title>scroll-snap-type on non-scrollers traps snap positions</title> +<link rel=author title="Tab Atkins-Bittner" href="https://www.xanthir.com/contact/"> +<link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#captures-snap-positions"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<style> + +.scroller { + width: 100px; + height: 100px; + overflow: auto; + scroll-snap-type: block mandatory; +} +.item { + background: gray; + height: 100px; + scroll-snap-type: block mandatory; +} +.item.snapped { + background: green; + scroll-snap-align: center; +} +.subitem { + background: red; + height: 100px; + scroll-snap-align: center; +} + +</style> + + +<!-- +Boxes with a non-none value for scroll-snap-type +will capture snap positions from their descendents, +preventing them from affecting higher-up scrollers, +even if they are not, themselves, scrollers. +--> + +<div class=scroller> + <div class=item></div> + <div class=item><div class=subitem></div></div> + <div class="item snapped"></div> + <div class=item></div> +</div> + +<script> + +test(()=>{ + const el = document.querySelector('.scroller'); + assert_equals(el.scrollTop, 200); +}, "The third item should be snapped to by default, not the second's child."); + +</script> |