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| -rw-r--r-- | layout/reftests/async-scrolling/opaque-fractional-displayport-1.html | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/layout/reftests/async-scrolling/opaque-fractional-displayport-1.html b/layout/reftests/async-scrolling/opaque-fractional-displayport-1.html new file mode 100644 index 0000000000..8a73a7f309 --- /dev/null +++ b/layout/reftests/async-scrolling/opaque-fractional-displayport-1.html @@ -0,0 +1,51 @@ +<!DOCTYPE html> +<html lang="en" reftest-async-scroll> +<meta charset="utf-8"> +<title>Make sure the scrolled layer is opaque even if the scrolled area is fractional</title> + +<style> + +body { + margin: 0; +} + +.scrollbox { + margin: 50px; + width: 200px; + height: 200px; + overflow: auto; + + /* Make the background "non-uniform" so that the scrolled layer does not + * pull up a background color. */ + background: linear-gradient(to bottom, white, transparent); +} + +.scrolled-contents { + height: 300.2px; + background-color: lime; + box-sizing: border-box; +} + +.transparent-overlap-of-fractional-edge { + margin: 0 20px; + height: 40px; + /* This element has a box-shadow that overlaps the bottom of the scrolled + * area. Box shadows do not expand the scrollable area. */ + box-shadow: 0 280px rgba(0, 0, 255, 0.5); +} + +</style> + +<body> + +<div class="scrollbox" + reftest-displayport-x="0" reftest-displayport-y="0" + reftest-displayport-w="200" reftest-displayport-h="300.2" + reftest-async-scroll-x="0" reftest-async-scroll-y="0"> + <div class="scrolled-contents"> + <div class="transparent-overlap-of-fractional-edge reftest-opaque-layer"> + <!-- This element has the magic "reftest-opaque-layer" class which + constitutes the actual test here. --> + </div> + </div> +</div> |