scrollable-overflow-transform-dynamic-002.html (2171B)
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 Positioned Element</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 on a positioned element."> 8 <script src="/resources/testharness.js"></script> 9 <script src="/resources/testharnessreport.js"></script> 10 <style> 11 .container { 12 position: absolute; 13 width: 100px; 14 height: 100px; 15 overflow: auto; 16 background: silver; 17 border: solid thick; 18 } 19 20 .element { 21 width: 50px; 22 height: 50px; 23 background: lime; 24 } 25 </style> 26 27 <div style="position: relative;"> 28 29 <div id="container1" style="top: 0px;" class="container"> 30 <div id="element1" style="transform: translateX(20px);" class="element"></div> 31 </div> 32 33 <div id="container2" style="top: 150px;" class="container"> 34 <div id="element2" style="transform: translateY(30px);" class="element"></div> 35 </div> 36 37 <div id="container3" style="top: 300px;" class="container"> 38 <div id="element3" style="transform: translate(20px, 30px);" class="element"></div> 39 </div> 40 41 </div> 42 43 <script> 44 test(() => { 45 assert_equals(container1.scrollWidth, 100); 46 element1.style.transform = "translateX(200px)"; 47 assert_equals(container1.scrollWidth, 250); 48 }, "Check scrollWidth before and after transform chage"); 49 50 test(() => { 51 assert_equals(container2.scrollHeight, 100); 52 element2.style.transform = "translateY(300px)"; 53 assert_equals(container2.scrollHeight, 350); 54 }, "Check scrollHeight before and after transform chage"); 55 56 test(() => { 57 assert_equals(container3.scrollWidth, 100); 58 assert_equals(container3.scrollHeight, 100); 59 element3.style.transform = "translate(200px, 300px)"; 60 assert_equals(container3.scrollWidth, 250); 61 assert_equals(container3.scrollHeight, 350); 62 }, "Check scrollWidth and scrollHeight before and after transform chage"); 63 </script>