Re: [csswg-drafts] [css-grid][masonry] repeat(auto-areas) (#10854)

Elika pointed out privately a feature of Grid 1 that I'd completely forgotten about (described in the section they link) - the explicit grid is sized by *the larger of* `grid-template-areas` and `grid-template-rows/columns`. If `grid-template-areas` gives a longer list in an axis than you've provided via `grid-template-rows/columns`, then the remaining tracks are sized by `grid-auto-rows/columns`, but are still considered part of the explicit grid.

So, `auto-areas` isn't actually needed for the purpose of filling in tracks to match the areas list; the existing initial values of the relevant properties work just fine.

However, `auto-areas` does one additional important thing, which is fall back to `auto-fill` if there are no named areas; this is *not* done by the default Grid values. This means that, by default, a masonry will fill with as many `auto` columns as it can fit (and it can tell how large `auto` is since its placement and sizing are intertwined). This isn't done in Grid - by default, a Grid will end up with an empty explicit grid, and an implicit grid sized to either the largest span or the largest definition position.

I think this remains an ideal default behavior for Masonry containers.

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Received on Monday, 9 September 2024 18:07:51 UTC