| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>CSS Backgrounds and Borders: getComputedStyle().background with multiple layers</title> |
| <link rel="help" href="https://drafts.csswg.org/css-backgrounds/#background"> |
| <meta name="assert" content="The number of computed value layers for a property is not influenced by the background-image property."> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/support/computed-testcommon.js"></script> |
| <style> |
| #target { |
| background-image: none, none, none; |
| font-size: 40px; |
| } |
| </style> |
| </head> |
| <body> |
| <div id="target"></div> |
| <script> |
| test_computed_value("background-attachment", "local", "local"); |
| test_computed_value("background-attachment", "scroll, fixed"); |
| test_computed_value("background-attachment", "local, fixed, scroll"); |
| test_computed_value("background-attachment", "local, fixed, scroll, fixed"); |
| |
| test_computed_value("background-clip", "border-box"); |
| test_computed_value("background-clip", "content-box, border-box"); |
| test_computed_value("background-clip", "border-box, padding-box, content-box"); |
| test_computed_value("background-clip", "content-box, border-box, padding-box, content-box"); |
| test_computed_value("background-clip", "content-box, border-box, padding-box"); |
| test_computed_value("background-clip", "content-box, border-box, border-area"); |
| test_computed_value("background-clip", "border-area text"); |
| test_computed_value("background-clip", "border-area text, content-box"); |
| |
| // background-color always computes as a single color. |
| test_computed_value("background-color", "rgb(255, 0, 0)"); |
| |
| test_computed_value("background-origin", "border-box"); |
| test_computed_value("background-origin", "content-box, border-box"); |
| test_computed_value("background-origin", "border-box, padding-box, content-box"); |
| test_computed_value("background-origin", "content-box, border-box, padding-box, content-box"); |
| |
| test_computed_value("background-position", "50% 6px"); |
| test_computed_value("background-position", "12px 13px, 50% 6px"); |
| test_computed_value("background-position", "12px 13px, 50% 6px, 30px -10px"); |
| test_computed_value("background-position", "12px 13px, 50% 6px, 30px -10px, -7px 8px"); |
| |
| test_computed_value("background-position-x", "0.5em", "20px"); |
| test_computed_value("background-position-x", "-20%, 10px"); |
| test_computed_value("background-position-x", "center, left, right", "50%, 0%, 100%"); |
| test_computed_value("background-position-x", "calc(10px - 0.5em), -20%, right, 15%", "-10px, -20%, 100%, 15%"); |
| |
| test_computed_value("background-position-y", "0.5em", "20px"); |
| test_computed_value("background-position-y", "-20%, 10px", "-20%, 10px"); |
| test_computed_value("background-position-y", "center, top, bottom", "50%, 0%, 100%"); |
| test_computed_value("background-position-y", "calc(10px - 0.5em), -20%, bottom, 15%", "-10px, -20%, 100%, 15%"); |
| |
| test_computed_value("background-repeat", "round"); |
| test_computed_value("background-repeat", "repeat-x, repeat"); |
| test_computed_value("background-repeat", "repeat space, round no-repeat, repeat-x"); |
| test_computed_value("background-repeat", "repeat-y, round no-repeat, repeat-x, repeat"); |
| |
| test_computed_value("background-size", "contain"); |
| test_computed_value("background-size", "auto 1px, 2% 3%"); |
| test_computed_value("background-size", "auto 1px, 2% 3%, contain"); |
| test_computed_value("background-size", "auto 1px, 2% 3%, contain, 7px 8px"); |
| |
| // Verify background shorthand correctly computes background-clip. |
| test(() => { |
| const target = document.getElementById('target'); |
| target.style.background = ''; |
| target.style.background = 'border-area text'; |
| assert_equals(getComputedStyle(target).backgroundClip, 'border-area text'); |
| target.style.background = ''; |
| }, "background shorthand with 'border-area text' computes background-clip correctly"); |
| |
| test(() => { |
| const target = document.getElementById('target'); |
| target.style.background = ''; |
| target.style.background = 'text border-area'; |
| assert_equals(getComputedStyle(target).backgroundClip, 'border-area text'); |
| target.style.background = ''; |
| }, "background shorthand with 'text border-area' computes background-clip correctly"); |
| |
| // Open issue: Define serialization for background shorthand |
| // https://github.com/w3c/csswg-drafts/issues/418 |
| // test_computed_value("background", "rgb(1, 2, 3) none 4px 5px / 6px 7px repeat space scroll border-box padding-box"); |
| </script> |
| </body> |
| </html> |
