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feat(tui): hardware cursor positioning for IME support

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- Add Focusable interface for components that need hardware cursor positioning
- Add CURSOR_MARKER (APC escape sequence) for marking cursor position in render output
- Editor and Input components implement Focusable and emit marker when focused
- TUI extracts cursor position from rendered output and positions hardware cursor
- Track hardwareCursorRow separately from cursorRow for differential rendering
- visibleWidth() and extractAnsiCode() now handle APC sequences
- Update overlay-test.ts example to demonstrate Focusable usage
- Add documentation for Focusable interface in docs/tui.md

Closes #719, closes #525
This commit is contained in:
Mario Zechner 2026-01-16 04:30:07 +01:00
parent d9464383ec
commit 07fad1362c
8 changed files with 193 additions and 17 deletions
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packages/tui/CHANGELOG.md
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@ -8,11 +8,15 @@
### Added
- Hardware cursor positioning for IME support in `Editor` and `Input` components. The terminal cursor now follows the text cursor position, enabling proper IME candidate window placement for CJK input. ([#719](https://github.com/badlogic/pi-mono/pull/719))
- `Focusable` interface for components that need hardware cursor positioning. Implement `focused: boolean` and emit `CURSOR_MARKER` in render output when focused.
- `CURSOR_MARKER` constant and `isFocusable()` type guard exported from the package
- Editor now supports Page Up/Down keys (Fn+Up/Down on MacBook) for scrolling through large content ([#732](https://github.com/badlogic/pi-mono/issues/732))
### Fixed
- Editor no longer corrupts terminal display when text exceeds screen height. Content now scrolls vertically with indicators showing lines above/below the viewport. Max height is 30% of terminal (minimum 5 lines). ([#732](https://github.com/badlogic/pi-mono/issues/732))
- `visibleWidth()` and `extractAnsiCode()` now handle APC escape sequences (`ESC _ ... BEL`), fixing width calculation and string slicing for strings containing cursor markers
## [0.46.0] - 2026-01-15