viewport-units-after-font-load.html (2062B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"> 3 <title>CSS Values: Viewport units are computed correctly after font load.</title> 4 <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> 5 <link rel="author" title="Mozilla" href="https://mozilla.org"> 6 <link rel="help" href="https://www.w3.org/TR/css-values-3/#viewport-relative-lengths"> 7 <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1620359"> 8 <script src="/resources/testharness.js"></script> 9 <script src="/resources/testharnessreport.js"></script> 10 <iframe width=300 height=300 scrolling=no srcdoc=""></iframe> 11 <script> 12 let t = async_test("Viewport units are correctly updated after resize even if a font load has happened before"); 13 let iframe = document.querySelector("iframe"); 14 onload = t.step_func(function() { 15 let doc = iframe.contentDocument; 16 let win = iframe.contentWindow; 17 doc.body.innerHTML = ` 18 <div style="width: 100vw; height: 100vh; background: green"></div> 19 `; 20 let div = doc.querySelector("div"); 21 let oldWidth = win.getComputedStyle(div).width; 22 let oldHeight = win.getComputedStyle(div).height; 23 assert_equals(oldWidth, win.innerWidth + "px", "Should fill the viewport"); 24 assert_equals(oldHeight, win.innerHeight + "px", "Should fill the viewport"); 25 let link = doc.createElement("link"); 26 link.rel = "stylesheet"; 27 link.href = "/fonts/ahem.css"; 28 link.onload = t.step_func(function() { 29 iframe.width = 400; 30 win.requestAnimationFrame(t.step_func(function() { 31 win.requestAnimationFrame(t.step_func_done(function() { 32 let newWidth = win.getComputedStyle(div).width; 33 let newHeight = win.getComputedStyle(div).height; 34 assert_equals(newWidth, win.innerWidth + "px", "Should fill the viewport"); 35 assert_equals(newHeight, win.innerHeight + "px", "Should fill the viewport"); 36 assert_equals(newHeight, oldHeight, "Height shouldn't have changed"); 37 assert_not_equals(newWidth, oldWidth, "Width should have changed"); 38 })); 39 })); 40 }); 41 doc.body.appendChild(link); 42 }); 43 </script>