| <!DOCTYPE html> |
| <title>CSS Anchor Positioning: inset-area positioning with additional insets</title> |
| <link rel="help" href="https://drafts.csswg.org/css-anchor-position/#inset-area"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <!-- The grid: |
| |
| 100 150 150 |
| +--------+--------+--------+ |
| | | | | |
| 150 | | | | |
| | | | | |
| +--------+--------+--------+ |
| | | | | |
| 75 | | | | |
| | | | | |
| +--------+--------+--------+ |
| | | | | |
| 175 | | | | |
| | | | | |
| +--------+--------+--------+ |
| |
| --> |
| <style> |
| #container { |
| position: absolute; |
| width: 400px; |
| height: 400px; |
| } |
| #anchored { |
| position: absolute; |
| align-self: stretch; |
| justify-self: stretch; |
| position-anchor: --anchor; |
| } |
| #anchor { |
| margin-top: 150px; |
| margin-left: 100px; |
| width: 150px; |
| height: 75px; |
| anchor-name: --anchor; |
| } |
| </style> |
| <div id="container"> |
| <div id="anchored"></div> |
| <div id="anchor"></div> |
| </div> |
| <script> |
| function test_inset_area(inset_area, insets, expected_offsets) { |
| anchored.style.insetArea = inset_area; |
| for (const [prop, value] of Object.entries(insets)) { |
| anchored.style[prop] = value; |
| } |
| |
| test(() => { |
| assert_equals(anchored.offsetLeft, expected_offsets.left, "Check expected offsetLeft"); |
| assert_equals(anchored.offsetTop, expected_offsets.top, "Check expected offsetTop"); |
| assert_equals(anchored.offsetWidth, expected_offsets.width, "Check expected offsetWidth"); |
| assert_equals(anchored.offsetHeight, expected_offsets.height, "Check expected offsetHeight"); |
| }, "Offsets for inset-area: " + inset_area + " and insets: " + JSON.stringify(insets)); |
| } |
| |
| test_inset_area("span-all", {top:"5px", bottom:"5px", left:"5px", right:"5px"}, |
| {left:5, top:5, width:390, height:390}); |
| |
| test_inset_area("center center", {top:"10px", bottom:"40px", left:"5px", right:"15px"}, |
| {left:105, top:160, width:130, height:25}); |
| |
| test_inset_area("left bottom", {top:"10px", bottom:"40px", left:"5px", right:"15px"}, |
| {left:5, top:235, width:80, height:125}); |
| |
| test_inset_area("span-right center", {top:"20%", bottom:"auto", left:"auto", right:"25%"}, |
| {left:100, top:165, width:225, height:60}); |
| |
| // No implicit anchor means the inset-area should not apply, but the insets still should. |
| anchored.style.positionAnchor = "implicit"; |
| test_inset_area("bottom right", {left:"50px", right:"100px", top:"30px" , bottom:"10px"}, |
| {left:50, top:30, width:250, height:360}); |
| </script> |
