| <!DOCTYPE html> |
| <html> |
| <meta name="viewport" content="width=device-width,initial-scale=1"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-actions.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="support/action-utils.js"></script> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1947470"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#perform-a-scroll"> |
| <style> |
| html { |
| height: 10000px; |
| } |
| body { |
| margin: 0px; |
| padding: 0px; |
| } |
| #fixed { |
| position: fixed; |
| bottom: 0px; |
| height: 50vh; |
| width: 100vw; |
| overflow: scroll; |
| background-color: gray; |
| } |
| input { |
| height: 20px; |
| } |
| </style> |
| <div id="fixed"> |
| <div style="height: calc(80vh - 40px)"></div> |
| <input type="text" id="name" /> |
| </div> |
| <script> |
| promise_test(async t => { |
| assert_equals(window.scrollY, 0); |
| assert_equals(visualViewport.scale, 1.0); |
| assert_equals(visualViewport.pageTop, 0); |
| |
| // Pinch zoom in this document. |
| await pinch_zoom_action(); |
| |
| assert_greater_than(visualViewport.scale, 1.0); |
| |
| // Scroll the root scroll container. |
| window.scrollTo(0, 1000); |
| assert_equals(window.scrollY, 1000); |
| |
| const expectedPageTop = visualViewport.pageTop; |
| |
| // Now trigger a scrollIntoView call to an element inside a position:fixed element. |
| scrollPromise = |
| new Promise(resolve => visualViewport.addEventListener("scroll", resolve)); |
| document.querySelector('#name').scrollIntoView({ behavior: "instant" }); |
| await scrollPromise; |
| |
| assert_greater_than(visualViewport.pageTop, expectedPageTop); |
| }, "Element.scrollIntoView scrolls visually to a position: fixed element with non-zero layout scroll offset"); |
| </script> |
