| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>CSS Values: Viewport units are computed correctly after font load.</title> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <link rel="author" title="Mozilla" href="https://mozilla.org"> |
| <link rel="help" href="https://drafts.csswg.org/css-values-4/#viewport-relative-lengths"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1620359"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <iframe width=300 height=300 scrolling=no srcdoc=""></iframe> |
| <script> |
| let t = async_test("Viewport units are correctly updated after resize even if a font load has happened before"); |
| let iframe = document.querySelector("iframe"); |
| onload = t.step_func(function() { |
| let doc = iframe.contentDocument; |
| let win = iframe.contentWindow; |
| doc.body.innerHTML = ` |
| <div style="width: 100vw; height: 100vh; background: green"></div> |
| `; |
| let div = doc.querySelector("div"); |
| let oldWidth = win.getComputedStyle(div).width; |
| let oldHeight = win.getComputedStyle(div).height; |
| assert_equals(oldWidth, win.innerWidth + "px", "Should fill the viewport"); |
| assert_equals(oldHeight, win.innerHeight + "px", "Should fill the viewport"); |
| let link = doc.createElement("link"); |
| link.rel = "stylesheet"; |
| link.href = "/fonts/ahem.css"; |
| link.onload = t.step_func(function() { |
| iframe.width = 400; |
| win.requestAnimationFrame(t.step_func(function() { |
| win.requestAnimationFrame(t.step_func_done(function() { |
| let newWidth = win.getComputedStyle(div).width; |
| let newHeight = win.getComputedStyle(div).height; |
| assert_equals(newWidth, win.innerWidth + "px", "Should fill the viewport"); |
| assert_equals(newHeight, win.innerHeight + "px", "Should fill the viewport"); |
| assert_equals(newHeight, oldHeight, "Height shouldn't have changed"); |
| assert_not_equals(newWidth, oldWidth, "Width should have changed"); |
| })); |
| })); |
| }); |
| doc.body.appendChild(link); |
| }); |
| </script> |
