| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <style> |
| #container { |
| width: 400px; |
| height: 400px; |
| overflow: auto; |
| scroll-snap-type: x mandatory; |
| position: absolute; |
| left: 0px; |
| top: 0px; |
| margin: 0; |
| padding: 0; |
| } |
| |
| ::-webkit-scrollbar { |
| display: none; |
| } |
| |
| .cell { |
| width: 400px; |
| height: 400px; |
| margin: 0px; |
| padding: 0px; |
| position: absolute; |
| scroll-snap-align: center; |
| } |
| |
| .green { |
| background-color: green; |
| } |
| |
| .red { |
| background-color: red; |
| } |
| </style> |
| <script src="../../resources/js-test.js"></script> |
| <script> |
| function run() { |
| jsTestIsAsync = true; |
| if (!window.testRunner || !window.internals) { |
| debug(`To manually test, verify that scrolling in the container snaps so that each colored box can fill |
| the scroll container.`); |
| return; |
| } |
| |
| setTimeout(() => { |
| debug(`The scroll offsets are: ${internals.scrollSnapOffsets(container)}`); |
| finishJSTest(); |
| }, 0); |
| } |
| </script> |
| </head> |
| <body onload=run()> |
| <div id="container"> |
| <div style="top: 0px; left: 0px;" class="cell green"></div> |
| <div style="top: 0px; left: 400px;" class="cell red"></div> |
| <div style="top: 0px; left: 800px;" class="cell green"></div><br/> |
| <div style="top: 400px; left: 0px;" class="cell red"></div> |
| <div style="top: 400px; left: 400px;" class="cell green"></div> |
| <div style="top: 400px; left: 800px;" class="cell red"></div><br/> |
| <div style="top: 800px; left: 0px;" class="cell green"></div> |
| <div style="top: 800px; left: 400px;" class="cell red"></div> |
| <div style="top: 800px; left: 800px;" class="cell green"></div> |
| </div> |
| <script> |
| container.style.scrollSnapType = "both mandatory"; |
| </script> |
| <div id="output"></div> |
| </body> |
| </html> |
