| <!doctype html> |
| <title>Overflow: clip hit testing includes overflow in overflow-clip-margin</title> |
| <link rel="help" href="https://www.w3.org/TR/css-overflow-3/#valdef-overflow-clip"> |
| <link rel="author" title="Scott Violet" href="mailto:wangxianzhu@chromium.org"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <div id="container" style="width: 100px; height: 100px; |
| overflow: clip; overflow-clip-margin: 50px"> |
| <div id="child" style="width: 300px; height: 50px"></div> |
| </div> |
| |
| <script> |
| test(() => { |
| var bounds = container.getBoundingClientRect(); |
| assert_equals(child, document.elementFromPoint(bounds.x + 50, bounds.y + 20), |
| 'in child and container'); |
| assert_equals(child, document.elementFromPoint(bounds.x + 125, bounds.y + 25), |
| 'in child and container overflow clip margin'); |
| assert_equals(document.body, document.elementFromPoint(bounds.x + 175, bounds.y + 25), |
| 'outside of container overflow, would in child without clip'); |
| assert_equals(container, document.elementFromPoint(bounds.x + 50, bounds.y + 75), |
| 'outside of child, in container'); |
| assert_equals(document.documentElement, |
| document.elementFromPoint(bounds.x + 50, bounds.y + 125), |
| 'in container overflow clip margin, but nothing there'); |
| }, "Ensure elements in overflow-clip-margin are returned from elementFromPoint"); |
| </script> |
