| <!DOCTYPE html> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-snap/#scroll-snap-stop" /> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#snap-overflow" /> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| div { |
| position: absolute; |
| } |
| .scroller { |
| width: 400px; |
| height: 100px; |
| overflow: scroll; |
| scroll-snap-type: x mandatory; |
| } |
| #space { |
| left: 0px; |
| top: 0px; |
| width: 2100px; |
| height: 50px; |
| } |
| .target { |
| width: 50px; |
| height: 50px; |
| scroll-snap-align: start; |
| top: 0px; |
| } |
| </style> |
| |
| <div class="scroller" id="scroller7"> |
| <div id="space"></div> |
| <div class="target" style="left: 0px;"></div> |
| <div class="target" style="left: 400px; width: 900px;"></div> |
| <div class="target" style="left: 900px; scroll-snap-stop: always;"></div |
| </div> |
| |
| <script> |
| |
| test(() => { |
| assert_equals(scroller7.scrollLeft, 0); |
| assert_equals(scroller7.scrollTop, 0); |
| |
| // start dest always |
| // |-------------------------|================|=====|===== |
| // 0 400 700 900 |
| |
| // Scoll on the element whose snap area is larger than the snapport. |
| scroller7.scrollBy(600, 0); |
| // Stops before the smaller snap area @ 900px enters the snapport. |
| assert_equals(scroller7.scrollLeft + scroller7.clientWidth, 900); |
| assert_equals(scroller7.scrollTop, 0); |
| |
| scroller7.scrollTo(0, 0); |
| scroller7.scrollBy(800, 0); |
| // Now the smaller snap area is closer, so we snap to it. |
| assert_equals(scroller7.scrollLeft, 900); |
| assert_equals(scroller7.scrollTop, 0); |
| }, "`scroll-snap-stop: always` snap point is further than the scroll " + |
| "destination and a snap area covers the snapport"); |
| |
| </script> |
