| <!DOCTYPE html> |
| <meta charset="UTF-8"> |
| <link rel="help" href="https://drafts.csswg.org/css-backgrounds-3/#background-image"> |
| <meta name="test" content="background-image supports animation"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/interpolation-testcommon.js"></script> |
| |
| <style> |
| .parent { |
| background-image: url(../resources/blue-100.png); |
| background-size: 0 0; |
| } |
| .target { |
| width: 100px; |
| height: 100px; |
| display: inline-block; |
| border: 10px solid black; |
| background-repeat: no-repeat; |
| background-image: url(../resources/blue-100.png); |
| } |
| .expected { |
| border-color: green; |
| margin-right: 2px; |
| } |
| </style> |
| |
| <body> |
| <script> |
| // Neutral to image |
| var from = 'url(../resources/blue-100.png)'; |
| var to = 'url(../resources/green-100.png)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: neutralKeyframe, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // initial to image |
| to = 'url(../resources/green-100.png)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: 'initial', |
| to: to, |
| }, [ |
| {at: -0.3, expect: 'none'}, |
| {at: 0, expect: 'none'}, |
| {at: 0.3, expect: 'none'}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // inherit to image |
| from = 'url(../resources/blue-100.png)'; |
| to = 'url(../resources/green-100.png)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: 'inherit', |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // unset to image |
| test_interpolation({ |
| property: 'background-image', |
| from: 'unset', |
| to: to, |
| }, [ |
| {at: -0.3, expect: 'none'}, |
| {at: 0, expect: 'none'}, |
| {at: 0.3, expect: 'none'}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Image to image |
| from = 'url(../resources/blue-100.png)'; |
| to = 'url(../resources/green-100.png)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Image to gradient |
| from = 'url(../resources/blue-100.png)'; |
| to = 'linear-gradient(45deg, blue, orange)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Image to crossfade |
| from = 'url(../resources/blue-100.png)'; |
| to = 'cross-fade(url(../resources/green-100.png), url(../resources/stripes-100.png), 0.5)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Gradient to gradient |
| from = 'linear-gradient(-45deg, red, yellow)'; |
| to = 'linear-gradient(45deg, blue, orange)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Keyword to image |
| from = 'none'; |
| to = 'url(../resources/green-100.png)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Multiple to multiple |
| var fromA = 'url(../resources/stripes-100.png)'; |
| var fromB = 'url(../resources/blue-100.png)'; |
| var toA = 'url(../resources/blue-100.png)'; |
| var toB = 'url(../resources/stripes-100.png)'; |
| from = fromA + ', ' + fromB; |
| to = toA + ', ' + toB; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Single to multiple |
| from = 'url(../resources/blue-100.png)'; |
| var toA = 'url(../resources/stripes-100.png)'; |
| var toB = 'url(../resources/green-100.png)'; |
| to = toA + ', ' + toB; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| // The interpolation of different numbers of background-images looks a bit strange here. |
| // Animating background-image is not specified to be possible however we do it for backwards compatibility. |
| // With this in mind we kept the implementation simple at the expense of this corner case because there is |
| // no official specification to support. |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| |
| // Multiple mismatched types |
| from = 'url(../resources/blue-100.png), none'; |
| to = 'url(../resources/stripes-100.png), url(../resources/green-100.png)'; |
| test_interpolation({ |
| property: 'background-image', |
| from: from, |
| to: to, |
| }, [ |
| {at: -0.3, expect: from}, |
| {at: 0, expect: from}, |
| {at: 0.3, expect: from}, |
| {at: 0.6, expect: to}, |
| {at: 1, expect: to}, |
| {at: 1.5, expect: to}, |
| ]); |
| </script> |
| </body> |
