| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <title>font-size interpolation</title> |
| <link rel="help" href="https://drafts.csswg.org/css-fonts-3/#propdef-font-size"> |
| <meta name="assert" content="font-size supports animation as length"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/interpolation-testcommon.js"></script> |
| |
| <style> |
| .container { |
| font-stretch: ultra-expanded; |
| } |
| .container2 { |
| font-stretch: ultra-condensed; |
| } |
| .target { |
| display: inline-block; |
| font: 100px sans-serif; |
| font-stretch: normal; |
| } |
| .expected { |
| color: green; |
| margin-right: 30px; |
| } |
| </style> |
| |
| <body> |
| <template id="target-template"> |
| <span class="container"> |
| <div class="target">TT</div> |
| </span> |
| </template> |
| |
| <span id="inv-container" class="container"> |
| <div id="inv-target" class="target">TT</div> |
| </span> |
| </body> |
| |
| <script> |
| test_interpolation({ |
| property: 'font-stretch', |
| from: '100%', |
| to: '200%' |
| }, [ |
| {at: -2, expect: '0%'}, // CSS font-stretch can't be negative. |
| {at: -0.25, expect: '75%'}, |
| {at: 0, expect: '100%'}, |
| {at: 0.3, expect: '130%'}, |
| {at: 0.6, expect: '160%'}, |
| {at: 1, expect: '200%'}, |
| {at: 1.5, expect: '250%'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: neutralKeyframe, |
| to: '200%' |
| }, [ |
| {at: -2, expect: '0%'}, |
| {at: -0.25, expect: '75%'}, |
| {at: 0, expect: '100%'}, |
| {at: 0.3, expect: '130%'}, |
| {at: 0.6, expect: '160%'}, |
| {at: 1, expect: '200%'}, |
| {at: 1.5, expect: '250%'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'initial', |
| to: 'inherit' |
| }, [ |
| {at: -2, expect: '0%'}, |
| {at: -0.25, expect: '75%'}, |
| {at: 0, expect: '100%'}, |
| {at: 0.3, expect: '130%'}, |
| {at: 0.6, expect: '160%'}, |
| {at: 1, expect: '200%'}, |
| {at: 1.5, expect: '250%'}, |
| ]); |
| |
| // Test interpolation from keywords. |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'normal', |
| to: 'ultra-expanded' |
| }, [ |
| {at: -0.25, expect: 'condensed'}, |
| {at: 0, expect: 'normal'}, |
| {at: 0.125, expect: 'semi-expanded'}, |
| {at: 0.25, expect: 'expanded'}, |
| {at: 0.5, expect: 'extra-expanded'}, |
| {at: 0.75, expect: '175%'}, |
| {at: 1, expect: 'ultra-expanded'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'ultra-condensed', |
| to: 'condensed' |
| }, [ |
| {at: 0, expect: 'ultra-condensed'}, |
| {at: 0.5, expect: 'extra-condensed'}, |
| {at: 1, expect: 'condensed'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'extra-condensed', |
| to: 'semi-condensed' |
| }, [ |
| {at: 0, expect: 'extra-condensed'}, |
| {at: 0.5, expect: 'condensed'}, |
| {at: 1, expect: 'semi-condensed'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'condensed', |
| to: 'expanded' |
| }, [ |
| {at: 0, expect: 'condensed'}, |
| {at: 0.25, expect: 'semi-condensed'}, |
| {at: 0.5, expect: 'normal'}, |
| {at: 0.75, expect: 'semi-expanded'}, |
| {at: 1, expect: 'expanded'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'semi-condensed', |
| to: 'semi-expanded' |
| }, [ |
| {at: 0, expect: 'semi-condensed'}, |
| {at: 0.5, expect: 'normal'}, |
| {at: 1, expect: 'semi-expanded'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-stretch', |
| from: 'normal', |
| to: 'extra-expanded' |
| }, [ |
| {at: 0, expect: 'normal'}, |
| {at: 0.25, expect: 'semi-expanded'}, |
| {at: 0.5, expect: 'expanded'}, |
| {at: 1, expect: 'extra-expanded'}, |
| ]); |
| |
| test(t => { |
| var container = document.getElementById('inv-container'); |
| var target = document.getElementById('inv-target'); |
| var anim = target.animate({fontStretch: ['normal', 'inherit']}, 1000); |
| anim.pause(); |
| anim.currentTime = 500; |
| assert_equals(getComputedStyle(target).fontStretch, '150%'); |
| |
| container.setAttribute('class', 'container2'); |
| assert_equals(getComputedStyle(target).fontStretch, '75%'); |
| }, "An interpolation to inherit updates correctly on a parent style change."); |
| |
| </script> |
