| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <title>column-width interpolation</title> |
| <link rel="help" href="https://drafts.csswg.org/css-multicol-1/#cw"> |
| <meta name="assert" content="column-width supports animation by computed value type"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/interpolation-testcommon.js"></script> |
| |
| <style> |
| .parent { |
| column-width: 30px; |
| } |
| .target { |
| font-size: 0px; /* column-width "specified values must be greater than 0", so use font-size to achieve 0px computed value. */ |
| display: inline-block; |
| column-width: 10px; |
| } |
| </style> |
| |
| <body> |
| <template id="target-template"> |
| <div><div class="transformed"></div></div> |
| </template> |
| </body> |
| |
| <script> |
| test_interpolation({ |
| property: 'column-width', |
| from: neutralKeyframe, |
| to: '20px', |
| }, [ |
| {at: -20, expect: '1em'}, // column-width does not accept negative values |
| {at: -1, expect: '1em'}, // column-width does not accept negative values |
| {at: -0.3, expect: '7px'}, |
| {at: 0, expect: '10px'}, |
| {at: 0.3, expect: '13px'}, |
| {at: 0.6, expect: '16px'}, |
| {at: 1, expect: '20px'}, |
| {at: 1.5, expect: '25px'}, |
| ]); |
| |
| test_no_interpolation({ |
| property: 'column-width', |
| from: 'initial', |
| to: '20px', |
| }); |
| |
| test_interpolation({ |
| property: 'column-width', |
| from: 'inherit', |
| to: '20px', |
| }, [ |
| {at: -20, expect: '230px'}, |
| {at: -1, expect: '40px'}, |
| {at: -0.3, expect: '33px'}, |
| {at: 0, expect: '30px'}, |
| {at: 0.3, expect: '27px'}, |
| {at: 0.6, expect: '24px'}, |
| {at: 1, expect: '20px'}, |
| {at: 1.5, expect: '15px'}, |
| ]); |
| |
| test_no_interpolation({ |
| property: 'column-width', |
| from: 'unset', |
| to: '20px', |
| }); |
| |
| test_interpolation({ |
| property: 'column-width', |
| from: '50px', |
| to: '100px', |
| }, [ |
| {at: -20, expect: '1em'}, // column-width does not accept negative values |
| {at: -1, expect: '1em'}, // column-width does not accept negative values |
| {at: -0.3, expect: '35px'}, |
| {at: 0, expect: '50px'}, |
| {at: 0.3, expect: '65px'}, |
| {at: 0.6, expect: '80px'}, |
| {at: 1, expect: '100px'}, |
| {at: 1.5, expect: '125px'}, |
| ]); |
| |
| test_no_interpolation({ |
| property: 'column-width', |
| from: '50px', |
| to: 'auto', |
| }); |
| </script> |
