[css-scroll-snap-1] Scroll by page should not skip over content. #11370
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As per w3c#10914 when selecting a snap point as a result of a scroll by page operation we should always select a snap position that is less than a page away if one exists.
flackr
commented
Dec 13, 2024
| @@ -1090,6 +1090,10 @@ Choosing Snap Positions {#choosing} | |||
| if its nearest <a>scroll container</a> is a <a>scroll snap container</a>. | |||
| The user agent <em>may</em> also do this even when the <a>scroll container</a> has ''scroll-snap-type: none''. | |||
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| * If a scroll by page operation (e.g. Page down / Page up) is being performed, | |||
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I'm not sure if we have a spec concept for a scroll by page operation. Scrolling by page exists as a granularity for wheel scrolls but that doesn't include things like page up / page down or clicking on the scrollbar track. As such, I referred to the concept generally here.
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As per #10914 when selecting a snap point as a result of a scroll by page operation we should always select a snap position that is less than a page away as long it still makes progress in the requested direction if one exists.