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737f93705c
Summary:
@public
As we're doing in D9440914 (OSS 64a52532fe), send text metrics in an onTextLayout callback. These can be used by surrounding views for doing complicated layout like:
- displaying a cursor at the end of text
- vertical centering using capheight-baseline
This right now isn't very performant but is only done when `onTextLayout` is set. I plan to optimize it with a capheight and xheight cache in a follow up diff.
Reviewed By: achen1
Differential Revision: D9585613
fbshipit-source-id: aa20535b8371d5aecf15822d66a0d973c9a7eeda
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