| <!DOCTYPE html> |
| <title>Hit-test of clip-path polygon combined with box-shadow</title> |
| <link rel="help" href="https://drafts.fxtf.org/css-masking/#the-clip-path"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| body { |
| margin: 0; |
| } |
| .box { |
| width: 100px; |
| height: 100px; |
| background-color: blue; |
| box-shadow: -100px 0px red; |
| clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%); |
| } |
| </style> |
| <div class="box"></div> |
| <script> |
| function assert_element_at(element, pointlist) { |
| for (let point of pointlist) { |
| let result = document.elementFromPoint(point[0], point[1]); |
| assert_equals(result, element, point.join(',')); |
| } |
| } |
| |
| test(function() { |
| let div = document.querySelector('.box'); |
| |
| // Points inside clip-path. |
| assert_element_at(div, [[50, 50], [50, 25], [50, 75], [25, 50], [75, 50]]); |
| |
| // Points outside clip-path. |
| assert_element_at(document.body, [[20, 20], [80, 20], [20, 80], [80, 80]]); |
| }); |
| </script> |
