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Diffstat (limited to '')
| -rw-r--r-- | layout/reftests/async-scrolling/contain-paint-scrollable-frame-1.html | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/layout/reftests/async-scrolling/contain-paint-scrollable-frame-1.html b/layout/reftests/async-scrolling/contain-paint-scrollable-frame-1.html new file mode 100644 index 0000000000..471258a265 --- /dev/null +++ b/layout/reftests/async-scrolling/contain-paint-scrollable-frame-1.html @@ -0,0 +1,27 @@ +<!DOCTYPE HTML> +<html reftest-async-scroll> +<body> + <div style="width:400px; height:200px; overflow:scroll; + scrollbar-width: none; + border:2px solid black; background: red; + contain:paint;" + reftest-displayport-x="0" reftest-displayport-y="0" + reftest-displayport-w="800" reftest-displayport-h="2000" + reftest-async-scroll-x="0" reftest-async-scroll-y="100"> + <!-- This element is what we're hoping will fill the scrollport + when the reftest snapshot is taken: --> + <div style="background: lime; margin-top: 100px; height: 600px"></div> + + <!-- This element is just to be sure the scrollframe's "contain:paint" + styling is actually having an effect. "contain:paint" should make the + scrollframe become a containing block for this fixed-pos element, and + then this element will position itself off the bottom of the + scrollframe and will be entirely clipped. If we fail to honor + "contain:paint" for some reason, then this element will instead use + the *viewport* as its containing block, and it'll show up in the + reftest snapshot and cause the reftest to fail. --> + <div style="position: fixed; top: 320px; width: 50px; height: 50px; + background: purple;"></div> + </div> +</body> +</html> |