| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Test: flex base size that depends on cross size, with aspect-ratio</title> |
| <link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#algo-main-item"> |
| <link rel="help" href="https://drafts.csswg.org/css-flexbox-1/#definite-sizes"> |
| <link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio-size-transfers"> |
| <meta name="assert" content="A stretched flex item of a single-line flex |
| container with a definite cross size has a definite cross size too, so a |
| descendant with a percentage block-size and a preferred aspect ratio can |
| transfer it to the inline axis when the item's max-content flex base size is |
| computed."> |
| |
| <style> |
| .row { |
| display: flex; |
| height: 50px; |
| } |
| .item { |
| min-width: 0; |
| } |
| .ar { |
| height: 100%; |
| aspect-ratio: 2 / 1; |
| background: green; |
| } |
| </style> |
| |
| <!-- The .ar block resolves its percentage height against the item's definite |
| stretched cross size (50px), and transfers it through its aspect ratio. --> |
| <div class="row"> |
| <div class="item" style="display: flex; flex-direction: column" |
| data-expected-width="100"> |
| <div class="ar"></div> |
| </div> |
| </div> |
| |
| <div class="row"> |
| <div class="item" style="display: flex; flex-direction: row" |
| data-expected-width="100"> |
| <div class="ar"></div> |
| </div> |
| </div> |
| |
| <div class="row"> |
| <div class="item" style="display: block" data-expected-width="100"> |
| <div class="ar"></div> |
| </div> |
| </div> |
| |
| <!-- The item is not stretched, so its cross size is not definite. --> |
| <div class="row"> |
| <div class="item" style="display: flex; flex-direction: column; |
| align-self: flex-start" data-expected-width="0"> |
| <div class="ar"></div> |
| </div> |
| </div> |
| |
| <!-- The flex container has no definite cross size. --> |
| <div class="row" style="height: auto"> |
| <div class="item" style="display: flex; flex-direction: column" |
| data-expected-width="0"> |
| <div class="ar"></div> |
| </div> |
| </div> |
| |
| <!-- The flex container is not single-line. --> |
| <div class="row" style="flex-wrap: wrap"> |
| <div class="item" style="display: flex; flex-direction: column" |
| data-expected-width="0"> |
| <div class="ar"></div> |
| </div> |
| </div> |
| |
| <div style="display: flex; flex-direction: column; width: 100px"> |
| <div class="item" style="display: flex; flex: 1 1 0%; flex-direction: row; background: red;" |
| data-expected-width="100" data-expected-height="100"> |
| <div class="item" style="flex: 1 1 0%; aspect-ratio: 1 / 1; background: red; position: relative;" |
| data-expected-width="100" data-expected-height="100"> |
| <div class="item" style="position: absolute; inset: 0; background: |
| green"></div> |
| </div> |
| </div> |
| </div> |
| |
| <div id="log"></div> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/check-layout-th.js"></script> |
| <script> |
| checkLayout(".item"); |
| </script> |
