Acfboy opened a new pull request, #3689:
URL: https://github.com/apache/nuttx-apps/pull/3689
## Summary
This PR ports the Nano-X windowing system from Microwindows to NuttX so that
X11-style client/server applications can run in a flat build. It contains three
logical parts:
1. `graphics/microwindows`: build the Nano-X client library and server from
the bundled Microwindows tree, with two new Kconfig options:
- `MICROWINDOWS_NANOX`: build the Nano-X client library and server.
- `MICROWINDOWS_NANOX_NANOWM`: optionally link the Microwindows window
manager into the server so the server task draws and decorates windows itself.
2. `examples/nanoxcalc`: port of the nxcalc demo. It connects to the running
Nano-X server and shows a calculator keypad.
3. `examples/nanoxterm`: port of the nxterm demo. It is a terminal emulator
that opens a pseudo terminal, forks, and runs an NSH instance (nsh_consolemain)
in the child instead of exec'ing /bin/sh, since flat builds have no filesystem
binaries. It starts the Nano-X server as a separate task before connecting, so
it can be used as the init entry point: booting sim:nanox opens the nxterm
window directly, and typing nanoxcalc in it opens the calculator.
## Note
There are still some remaining issues, for example, have some problem when
running on qemu, so this is just a draft PR. When it is fully ready, I will add
the documentation and open it up for review.
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