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Diffstat (limited to 'testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-change-anchor.html')
-rw-r--r-- | testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-change-anchor.html | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-change-anchor.html b/testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-change-anchor.html new file mode 100644 index 0000000000..117628e7dc --- /dev/null +++ b/testing/web-platform/tests/css/css-anchor-position/position-visibility-anchors-visible-change-anchor.html @@ -0,0 +1,68 @@ +<!DOCTYPE html> +<html class=reftest-wait> +<meta charset="utf-8"> +<meta name="assert" content="Position-visibility should not be affected by the visibility of a previous anchor." /> +<title>CSS Anchor Positioning Test: position-visibility: anchors-visible</title> +<link rel="help" href="https://drafts.csswg.org/css-anchor-position-1/#position-visibility"> +<link rel="match" href="position-visibility-anchors-visible-change-anchor-ref.html"> +<script src="/common/reftest-wait.js"></script> +<script src="/common/rendering-utils.js"></script> +<style> + #scroll-container { + overflow: hidden scroll; + width: 300px; + height: 100px; + } + + .anchor { + width: 100px; + height: 100px; + background: orange; + display: inline-block; + } + + #anchor1 { + height: 200px; + anchor-name: --a1; + } + + #anchor2 { + anchor-name: --a2; + } + + #target { + position-anchor: --a2; + position-visibility: anchors-visible; + inset-area: bottom; + width: 100px; + height: 100px; + background: green; + position: absolute; + top: 0; + left: 0; + } +</style> + +<div id="scroll-container"> + <div id="anchor1" class="anchor">anchor1</div> + <div id="anchor2" class="anchor">anchor2</div> + <div id="target">target</div> +</div> + +<script> + // #target should be initially visible because it is anchored to #anchor2, + // which is visible. + waitForAtLeastOneFrame().then(() => { + // Change #target to be anchored to #anchor1. + target.style.positionAnchor = '--a1'; + // #target should be still be visible because #anchor1 is also visible. + waitForAtLeastOneFrame().then(() => { + // Scroll #anchor2 out of view, with #anchor1 still in view. + const scroller = document.getElementById('scroll-container'); + scroller.scrollTop = 100; + // #target should still be visible because it is anchored to #anchor1, + // which is still visible. + takeScreenshot(); + }); + }); +</script> |