strans/README.md
2026-01-13 09:25:22 +09:00

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# strans
An input method daemon for CJK text entry on X11.
Inspired by 9front's ktrans. Threads communicate via CSP channels.
## Dependencies
- plan9port
- gtk+-3.0 (optional, for GTK IM module)
## Build
make
cd xim && make # XIM adapter
cd gtk && make docker && make install # GTK IM module
## Run
./strans map font &
For XIM apps:
./xim/strans-xim &
XMODIFIERS=@im=strans xterm
For GTK apps:
GTK_IM_MODULE=strans gedit
## Usage
Switch input modes with Ctrl + key:
N Hiragana
K Katakana
S Hangul
T English
V Vietnamese (Telex)
E Emoji
Type romanized input. Select candidates with 1-9 or arrow keys.
Tab or Enter to commit.
## Architecture
Four threads communicate via CSP channels:
- [imthread](strans.c#L271): keystroke processing, transliteration
- [dictthread](dict.c#L38): dictionary lookup
- [drawthread](win.c#L133): preedit window rendering
- [srvthread](srv.c#L42): IPC via unix socket
Adapters (strans-xim, im-strans.so) bridge X11/GTK events.
## Files
strans.c input method engine
dict.c dictionary queries
win.c xcb window management
font.c truetype rendering (stb_truetype)
map/ transliteration tables
font/ bundled CJK fonts
## References
- https://git.9front.org/plan9front/plan9front/HEAD/info.html
- https://np.mkv.li/kor/9front-ktrans-%ED%95%9C%EA%B8%80-%EB%98%91%EB%B0%94%EB%A1%9C-%EB%A7%8C%EB%93%A4%EA%B8%B0/
- https://en.wikipedia.org/wiki/Telex_(input_method)
- https://gist.github.com/hieuthi/0f5adb7d3f79e7fb67e0e499004bf558