[css3-flexbox] question about calculating "hypothetical main size" from Tab Atkins Jr. on 2012-06-29 (www-style@w3.org from June 2012) (original) (raw)
On Thu, Jun 28, 2012 at 7:18 AM, Kang-Hao (Kenny) Lu <kennyluck@csail.mit.edu> wrote:
I am having trouble understanding the algorithm here, and I'll appreciate some help, for example, a pointer to a previous discussion.
We're having trouble understanding what we were trying to say too, so you're not alone.
9.2. Line Length Determination
3. Determine the flex base size and hypothetical main size of each
item:
...
Otherwise, if the flex container's main-axis is parallel to the
item's inline-axis, lay out the item using the available space and
its flex basis if the item is inflexible,
Question 1: What does use the available space and its flex basis mean? Using its flex basis as the available space? Using the maximum of available space from the flex container and the flex basis?
Yeah, we need to clarify this.
Question 2: What is the flex base size of
The flex item is inflexible and the percentage is resolved against an flex container with indefinite width and hence indefinite by definition. How do you resolve 50% at this point?
That's undefined per 2.1. We need to fix this for all display types.
or ‘auto’ otherwise, treating ‘auto’ as ‘max-content’...
If the flex basis is ‘fill-available’, or ‘fit-content’, and
the flex container is being sized under a min-content or
max-content main-size constraint, size the item under that
constraint instead. The flex base size is the item's resulting
measure.
Question 3: What does "sized under a min-content or max-content main-size constraint" mean? What are the examples besides "width: min-content" and "width: max-content" on the flex container?
Those terms are defined in a commented out section of the algorithm. We're not sure where to put the definitions; they're applicable to a lot more than just Flexbox. We definitely need to do something about this, though.
~TJ
Received on Friday, 29 June 2012 00:25:45 UTC