| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <title>letter-spacing composition</title> |
| <link rel="help" href="https://drafts.csswg.org/css-text-3/#letter-spacing-property"> |
| <meta name="test" content="letter-spacing 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> |
| |
| <body> |
| <script src="../interpolation/resources/interpolation-test.js"></script> |
| <script> |
| test_composition({ |
| property: 'letter-spacing', |
| underlying: '50px', |
| addFrom: '100px', |
| addTo: '200px', |
| }, [ |
| {at: -0.3, expect: '120px'}, |
| {at: 0, expect: '150px'}, |
| {at: 0.5, expect: '200px'}, |
| {at: 1, expect: '250px'}, |
| {at: 1.5, expect: '300px'}, |
| ]); |
| |
| test_composition({ |
| property: 'letter-spacing', |
| underlying: '100px', |
| addFrom: '10px', |
| addTo: '2px', |
| }, [ |
| {at: -0.5, expect: '114px'}, |
| {at: 0, expect: '110px'}, |
| {at: 0.5, expect: '106px'}, |
| {at: 1, expect: '102px'}, |
| {at: 1.5, expect: '98px'}, |
| ]); |
| |
| test_composition({ |
| property: 'letter-spacing', |
| underlying: '50px', |
| addFrom: '100px', |
| replaceTo: '200px', |
| }, [ |
| {at: -0.3, expect: '135px'}, |
| {at: 0, expect: '150px'}, |
| {at: 0.5, expect: '175px'}, |
| {at: 1, expect: '200px'}, |
| {at: 1.5, expect: '225px'}, |
| ]); |
| </script> |
| </body> |
