Cosmic text: provide API to measure text without drawing it.

[viridia]

What problem does this solve or what need does it fill?

Often in games text is used for things like signs and placards; when creating such it would be useful to be able to accurately measure the size of the text so that it can be scaled appropriately.

What solution would you like?

Cosmic-text is a layout, not rendering, engine, so it should be possible to get metrics about a given text string without actually needing to draw it.

[ickshonpe]

More annoying than it looks.