Introducing Project Tate: Unlocking Native Ver…
summary
Two years of work produce a usable library: androidx.text:text-vertical reaches Beta and provides ruby, emphasis marks, vertical/sideways orientation, and span-based styling for display-only text in Compose and planned ExoPlayer subtitle support. Platform adds a vertical text flag in Android 16; older Android gets a pragmatic backport using font feature toggles and glyph substitution with a hardcoded 1em fallback. A surprising scan finds 262 fonts had VMTX support for CJK, so the backport works well for Japanese with known limitations (no selection or input).
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chapters (7)
- 0:00Project Tate introduction
- 7:54Project Tate history and challenges
- 9:39Vertical text overview
- 13:35Vertical text usage and features
- 22:58Vertical text platform implementation
- 28:18Backport implementation for older versions
- 34:04Project phases and future outlook
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