| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <title>font-style interpolation</title> |
| <link rel="help" href="https://drafts.csswg.org/css-fonts-3/#propdef-font-style"> |
| <meta name="assert" content="Font-style should be animated smoothly."> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/interpolation-testcommon.js"></script> |
| |
| <style> |
| .container { |
| font-style: oblique 20deg; |
| } |
| .container2 { |
| font-style: oblique 5deg; |
| } |
| .target { |
| display: inline-block; |
| font: 100px sans-serif; |
| font-style: 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-style', |
| from: 'normal', |
| to: 'oblique 10deg' |
| }, [ |
| {at: -2, expect: 'oblique -20deg'}, |
| {at: -0.25, expect: 'oblique -2.5deg'}, |
| {at: 0, expect: 'normal'}, |
| {at: 0.3, expect: 'oblique 3deg'}, |
| {at: 0.6, expect: 'oblique 6deg'}, |
| {at: 1, expect: 'oblique 10deg'}, |
| {at: 1.5, expect: 'oblique 15deg'}, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-style', |
| from: 'oblique 5deg', |
| to: 'oblique 15deg' |
| }, [ |
| { at: -2, expect: 'oblique -15deg' }, |
| { at: -0.25, expect: 'oblique 2.5deg' }, |
| { at: 0, expect: 'oblique 5deg' }, |
| { at: 0.3, expect: 'oblique 8deg' }, |
| { at: 0.6, expect: 'oblique 11deg' }, |
| { at: 1, expect: 'oblique 15deg' }, |
| { at: 1.5, expect: 'oblique 20deg' }, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-style', |
| from: 'initial', |
| to: 'inherit' |
| }, [ |
| { at: -2, expect: 'oblique -40deg' }, |
| { at: -0.25, expect: 'oblique -5deg' }, |
| { at: 0, expect: 'normal' }, |
| { at: 0.3, expect: 'oblique 6deg' }, |
| { at: 0.6, expect: 'oblique 12deg' }, |
| { at: 1, expect: 'oblique 20deg' }, |
| { at: 1.5, expect: 'oblique 30deg' }, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-style', |
| from: 'oblique 20deg', |
| to: 'normal' |
| }, [ |
| { at: -1, expect: 'oblique 40deg' }, |
| { at: 0, expect: 'oblique 20deg' }, |
| { at: 0.5, expect: 'oblique 10deg' }, |
| { at: 1, expect: 'normal' }, |
| { at: 1.5, expect: 'oblique -10deg' }, |
| ]); |
| |
| test_interpolation({ |
| property: 'font-style', |
| from: 'oblique -90deg', |
| to: 'oblique 90deg' |
| }, [ |
| { at: -2, expect: 'oblique -90deg' }, |
| { at: -1, expect: 'oblique -90deg' }, |
| { at: 0, expect: 'oblique -90deg' }, |
| { at: 0.5, expect: 'normal' }, |
| { at: 1, expect: 'oblique 90deg' }, |
| { at: 1.5, expect: 'oblique 90deg' }, |
| ]); |
| |
| test(t => { |
| var container = document.getElementById('inv-container'); |
| var target = document.getElementById('inv-target'); |
| var anim = target.animate({ fontStyle: ['normal', 'inherit'] }, 1000); |
| anim.pause(); |
| anim.currentTime = 500; |
| assert_equals(getComputedStyle(target).fontStyle, 'oblique 10deg'); |
| |
| container.setAttribute('class', 'container2'); |
| assert_equals(getComputedStyle(target).fontStyle, 'oblique 2.5deg'); |
| }, "An interpolation to inherit updates correctly on a parent style change."); |
| |
| </script> |
| |
