scrollable-overflow-transform-dynamic-005.html (2299B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"> 3 <meta name="viewport" content="width=device-width,initial-scale=1"> 4 <title>CSS Overflow: Scrollable Overflow Transform Dynamic DOM Manipulation</title> 5 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com"> 6 <link rel="help" href="https://drafts.csswg.org/css-overflow-3/#scrollable" /> 7 <meta name="assert" content="Checks that changes on an element's transform contribute to the scrollable overflow, even when some new element has been added to the DOM tree."> 8 <script src="/resources/testharness.js"></script> 9 <script src="/resources/testharnessreport.js"></script> 10 <style> 11 .container { 12 width: 100px; 13 height: 100px; 14 overflow: auto; 15 background: silver; 16 border: solid thick; 17 } 18 19 .element { 20 width: 50px; 21 height: 50px; 22 background: lime; 23 } 24 </style> 25 26 <div id="container1" class="container"> 27 <div id="element1" style="transform: translateX(20px);" class="element"></div> 28 </div> 29 30 <div id="container2" class="container"> 31 <div id="element2" style="transform: translateY(30px);" class="element"></div> 32 </div> 33 34 <div id="container3" class="container"> 35 <div id="element3" style="transform: translate(20px, 30px);" class="element"></div> 36 </div> 37 38 <script> 39 test(() => { 40 assert_equals(container1.scrollWidth, 100); 41 document.body.appendChild(document.createElement("div")); 42 element1.style.transform = "translateX(200px)"; 43 assert_equals(container1.scrollWidth, 250); 44 }, "Check scrollWidth before and after appendChild() and transform chage"); 45 46 test(() => { 47 assert_equals(container2.scrollHeight, 100); 48 document.body.appendChild(document.createElement("div")); 49 element2.style.transform = "translateY(300px)"; 50 assert_equals(container2.scrollHeight, 350); 51 }, "Check scrollHeight before and after appendChild() and transform chage"); 52 53 test(() => { 54 assert_equals(container3.scrollWidth, 100); 55 assert_equals(container3.scrollHeight, 100); 56 document.body.appendChild(document.createElement("div")); 57 element3.style.transform = "translate(200px, 300px)"; 58 assert_equals(container3.scrollWidth, 250); 59 assert_equals(container3.scrollHeight, 350); 60 }, "Check scrollWidth and scrollHeight before and after appendChild() and transform chage"); 61 </script>