| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <style> |
| body { |
| margin-top: 20px; |
| } |
| .layer-reference { |
| position: fixed; |
| top: 0px; |
| height: 100vh; |
| width: 50px; |
| background-color: rgba(255, 255, 255, 0.75); |
| font-family: sans-serif; |
| text-align: center; |
| padding-top: 5px; |
| border: 1px solid; |
| } |
| .parent { |
| z-index: 15; |
| } |
| .target { |
| position: relative; |
| width: 350px; |
| height: 10px; |
| z-index: -2; |
| } |
| .actual { |
| background-color: black; |
| } |
| .expected { |
| background-color: green; |
| } |
| </style> |
| <script src="resources/interpolation-test.js"></script> |
| <body></body> |
| <script> |
| [-8, -5, -2, 1, 5, 10, 12].forEach(function(zIndex, i) { |
| var layerReference = document.createElement('div'); |
| layerReference.classList.add('layer-reference'); |
| layerReference.style.zIndex = zIndex; |
| layerReference.style.left = 7 + (i * 50) + 'px'; |
| layerReference.textContent = 'Z=' + zIndex; |
| document.body.appendChild(layerReference); |
| }); |
| |
| assertInterpolation({ |
| property: 'z-index', |
| from: neutralKeyframe, |
| to: '5', |
| }, [ |
| {at: -0.3, is: '-4'}, |
| {at: 0, is: '-2'}, |
| {at: 0.3, is: '0'}, |
| {at: 0.6, is: '2'}, |
| {at: 1, is: '5'}, |
| {at: 1.5, is: '9'}, |
| ]); |
| |
| assertNoInterpolation({ |
| property: 'z-index', |
| from: 'initial', |
| to: '5', |
| }); |
| |
| // We fail to inherit correctly due to style overadjustment: crbug.com/375982 |
| assertInterpolation({ |
| property: 'z-index', |
| from: 'inherit', |
| to: '5', |
| }, [ |
| {at: -0.3, is: '18'}, |
| {at: 0, is: '15'}, |
| {at: 0.3, is: '12'}, |
| {at: 0.6, is: '9'}, |
| {at: 1, is: '5'}, |
| {at: 1.5, is: '0'}, |
| ]); |
| |
| assertNoInterpolation({ |
| property: 'z-index', |
| from: 'unset', |
| to: '5', |
| }); |
| |
| assertInterpolation({ |
| property: 'z-index', |
| from: '-5', |
| to: '5' |
| }, [ |
| {at: -0.3, is: '-8'}, |
| {at: 0, is: '-5'}, |
| {at: 0.3, is: '-2'}, |
| {at: 0.6, is: '1'}, |
| {at: 1, is: '5'}, |
| {at: 1.5, is: '10'}, |
| ]); |
| assertInterpolation({ |
| property: 'z-index', |
| from: '2', |
| to: '4' |
| }, [ |
| {at: -0.3, is: '1'}, |
| {at: 0, is: '2'}, |
| {at: 0.3, is: '3'}, |
| {at: 0.6, is: '3'}, |
| {at: 1, is: '4'}, |
| {at: 1.5, is: '5'}, |
| ]); |
| assertInterpolation({ |
| property: 'z-index', |
| from: '-2', |
| to: '-4' |
| }, [ |
| {at: -0.3, is: '-1'}, |
| {at: 0, is: '-2'}, |
| {at: 0.1, is: '-2'}, |
| {at: 0.3, is: '-3'}, |
| {at: 0.6, is: '-3'}, |
| {at: 1, is: '-4'}, |
| {at: 1.5, is: '-5'}, |
| ]); |
| assertNoInterpolation({ |
| property: 'z-index', |
| from: 'auto', |
| to: '10', |
| }); |
| |
| afterTest(function() { |
| if (window.testRunner) { |
| [].forEach.call(document.querySelectorAll('.layer-reference'), function(element) { |
| element.remove(); |
| }); |
| } |
| }); |
| </script> |
