multicol-overflow-transform-001.html (2204B)
1 <!DOCTYPE html> 2 <meta charset="utf-8"> 3 <meta name="viewport" content="width=device-width,initial-scale=1"> 4 <title>CSS Multi-column: Scrollable Overflow Transform Dynamic</title> 5 <link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com"> 6 <link rel="help" href="https://drafts.csswg.org/css-multicol/" /> 7 <link rel="help" href="https://drafts.csswg.org/css-overflow-3/#scrollable" /> 8 <meta name="assert" content="Checks that changes on an element's transform contribute to the scrollable overflow on an element in a multicol."> 9 <script src="/resources/testharness.js"></script> 10 <script src="/resources/testharnessreport.js"></script> 11 <style> 12 .container { 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="column-count: 2;"> 28 29 <div style="position: relative;"> 30 31 <div id="container1" class="container"> 32 <div id="element1" style="transform: translateX(20px);" class="element"></div> 33 </div> 34 35 <div id="container2" class="container"> 36 <div id="element2" style="transform: translateY(30px);" class="element"></div> 37 </div> 38 39 <div id="container3" class="container"> 40 <div id="element3" style="transform: translate(20px, 30px);" class="element"></div> 41 </div> 42 43 </div> 44 45 </div> 46 47 <script> 48 test(() => { 49 assert_equals(container1.scrollWidth, 100); 50 element1.style.transform = "translateX(200px)"; 51 assert_equals(container1.scrollWidth, 250); 52 }, "Check scrollWidth before and after transform chage"); 53 54 test(() => { 55 assert_equals(container2.scrollHeight, 100); 56 element2.style.transform = "translateY(300px)"; 57 assert_equals(container2.scrollHeight, 350); 58 }, "Check scrollHeight before and after transform chage"); 59 60 test(() => { 61 assert_equals(container3.scrollWidth, 100); 62 assert_equals(container3.scrollHeight, 100); 63 element3.style.transform = "translate(200px, 300px)"; 64 assert_equals(container3.scrollWidth, 250); 65 assert_equals(container3.scrollHeight, 350); 66 }, "Check scrollWidth and scrollHeight before and after transform chage"); 67 </script>