[csswg-drafts] [css-grid] Error in distribute space to spanned tracks algo

fantasai has just created a new issue for https://github.com/w3c/csswg-drafts:

== [css-grid] Error in distribute space to spanned tracks algo ==
Testcase: http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=5307
Spec: https://www.w3.org/TR/css-grid-1/#distribute-extra-space

The spec currently says
> Distribute the space equally to the planned increase of each spanned track with an affected size, freezing tracks as their planned size reaches their growth limits (and continuing to grow the unfrozen tracks as needed). 

However, it's unclear about what "distribute the space" means. It's easy to conclude that it should incorporated by adding to the "planned increase", but actually it needs to be incorporated by ensuring the "planned increase" is at least that amount, i.e. by `min()`ing with the "planned increase".

This is necessary to ensure the spec's stated goal of “(This prevents the size increases from becoming order-dependent.)” The result should be as Chrome currently calculates it: if you have a series of items spanning two tracks each, then the tracks should be equally sized.

Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/1729 using your GitHub account

Received on Wednesday, 16 August 2017 21:28:37 UTC