[Adobe-source-devel] aspect ratios in Eve

[Ralph T. <ra...@gm...>]

Hi List,

  Is there a reasonable way to extend Eve such that a view can specify
an aspect ratio that it must be placed at (if it was a video or
picture, for example). I'm aware of the twopass layout, but that only
solves the case where the ratio is wider than it is taller.

  Imagine that such a ratio constrained view is center aligned
horizontally and filling vertically (and imagine that it's tiny, and
being scaled up because it's filling vertically). The view won't know
what width to return to Eve until it knows the height that's
available.

  The only easy way I can think of "solving" this problem is by
solving vertical layout first, adjusting horizontal and the solving
horizontal layout when a layout has a view that's constrained like
this. Clearly this breaks down when there are two views that not both
constrained in the same way (and probably some platform's paragraph
layout APIs won't give you width based on height, breaking word-wrap
in labels). Is there another (reasonable) way to extend Eve to support
views with fixed aspect ratios?

Thanks!
 Ralph