| <!doctype html> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> |
| <link rel="author" title="Mozilla" href="https://mozilla.org"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollheight"> |
| <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1936156"> |
| <title>scroll{Width,Height} shouldn't account for collapsed margins, in order not to report unnecessary overflow</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| #target { |
| width: 20px; |
| flex-direction: column; |
| } |
| #target > div { |
| background-color: green; |
| margin: -5px -7px; |
| } |
| |
| #target > div > div { |
| height: 20px; |
| width: 20px; |
| } |
| </style> |
| <div id="target"> |
| <div><div></div></div> |
| <div><div></div></div> |
| <div><div></div></div> |
| <div><div></div></div> |
| </div> |
| <script> |
| let target = document.getElementById("target"); |
| // "clip" is not really scrollable, but should match as well. |
| for (let overflow of ["visible", "hidden", "auto", "scroll", "clip"]) { |
| // First one creates no overflow, last one does create overflow. |
| // TODO(emilio): Figure out why the overflow padding and some of the grid cases |
| // are not interoperable across platforms / engines. Maybe scrollbar-width dependent? |
| for (let padding of ["10px 20px" /* , "2px" */]) { |
| for (let border of ["0", "3px solid"]) { |
| for (let display of ["flex", "block", "flow-root", "inline-block", "inline-flex", /* "grid", "inline-grid" */]) { |
| test(function() { |
| let [expectedOverflowY, expectedOverflowX] = padding == "10px 20px" ? [0, 0] : [3, 5]; |
| target.style.overflow = overflow; |
| target.style.display = display; |
| target.style.border = border; |
| target.style.padding = padding; |
| let sh = target.scrollHeight; |
| let sw = target.scrollWidth; |
| let ch = target.clientHeight; |
| let cw = target.clientWidth; |
| assert_equals(sh, ch + expectedOverflowY, `scrollHeight expecting ${expectedOverflowY}px of overflow`); |
| assert_equals(sw, cw + expectedOverflowX, `scrollWidth expecting ${expectedOverflowX}px of overflow`); |
| }, `scroll{Width,Height} with negative margins with overflow: ${overflow}, padding: ${padding}, border: ${border}, display: ${display}`); |
| } |
| } |
| } |
| } |
| </script> |
