Add Layer Lock

[manna-harbour]

See #15 for the original discussion.

[manna-harbour]

Current layer lock is not supported in ZMK, see zmkfirmware/zmk#1299. Opposite layer lock can still be used.

[manna-harbour]

Layer lock for current and opposite layers has been added. See https://github.com/manna-harbour/miryoku/tree/master/docs/reference#additional-features.

[manna-harbour]

Layer lock and other Additional Features now require a double tap to activate to prevent accidental activation.

[maxesser1776]

@manna-harbour can you point me to the source code for the layer lock activation I'm trying to implement this in my own keymap thank you!!!

[manna-harbour]

@maxesser1776 Double tap to activate is a tap dance. The Miryoku ZMK Implementation is here: https://github.com/manna-harbour/miryoku_zmk/blob/master/miryoku/miryoku_double_tap_guard.dtsi, https://github.com/manna-harbour/miryoku_zmk/blob/master/miryoku/miryoku_double_tap_guard.h.

That implementation is very indirect. For your own keymap refer to the docs and just use the behavior directly without any cpp macros: https://zmk.dev/docs/keymaps/behaviors/tap-dance.

For the layer lock itself see https://github.com/manna-harbour/miryoku_zmk?tab=readme-ov-file#no-current-layer-lock.