scrollWidthHeight-overflow-visible-negative-margins.html (2570B)
1 <!doctype html> 2 <meta charset="utf-8"> 3 <meta name="viewport" content="width=device-width, initial-scale=1"> 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://drafts.csswg.org/cssom-view/#dom-element-scrollwidth"> 7 <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollheight"> 8 <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1936156"> 9 <title>scroll{Width,Height} shouldn't account for collapsed margins, in order not to report unnecessary overflow</title> 10 <script src="/resources/testharness.js"></script> 11 <script src="/resources/testharnessreport.js"></script> 12 <style> 13 #target { 14 width: 20px; 15 flex-direction: column; 16 } 17 #target > div { 18 background-color: green; 19 margin: -5px -7px; 20 } 21 22 #target > div > div { 23 height: 20px; 24 width: 20px; 25 } 26 </style> 27 <div id="target"> 28 <div><div></div></div> 29 <div><div></div></div> 30 <div><div></div></div> 31 <div><div></div></div> 32 </div> 33 <script> 34 let target = document.getElementById("target"); 35 // "clip" is not really scrollable, but should match as well. 36 for (let overflow of ["visible", "hidden", "auto", "scroll", "clip"]) { 37 // First one creates no overflow, last one does create overflow. 38 // TODO(emilio): Figure out why the overflow padding and some of the grid cases 39 // are not interoperable across platforms / engines. Maybe scrollbar-width dependent? 40 for (let padding of ["10px 20px" /* , "2px" */]) { 41 for (let border of ["0", "3px solid"]) { 42 for (let display of ["flex", "block", "flow-root", "inline-block", "inline-flex", /* "grid", "inline-grid" */]) { 43 test(function() { 44 let [expectedOverflowY, expectedOverflowX] = padding == "10px 20px" ? [0, 0] : [3, 5]; 45 target.style.overflow = overflow; 46 target.style.display = display; 47 target.style.border = border; 48 target.style.padding = padding; 49 let sh = target.scrollHeight; 50 let sw = target.scrollWidth; 51 let ch = target.clientHeight; 52 let cw = target.clientWidth; 53 assert_equals(sh, ch + expectedOverflowY, `scrollHeight expecting ${expectedOverflowY}px of overflow`); 54 assert_equals(sw, cw + expectedOverflowX, `scrollWidth expecting ${expectedOverflowX}px of overflow`); 55 }, `scroll{Width,Height} with negative margins with overflow: ${overflow}, padding: ${padding}, border: ${border}, display: ${display}`); 56 } 57 } 58 } 59 } 60 </script>