3 The swap-hands action allows support for one-handed typing without requiring a separate layer. Set `SWAP_HANDS_ENABLE` in the Makefile and define a `hand_swap_config` entry in your keymap. Now whenever the `ACTION_SWAP_HANDS` command key is pressed the keyboard is mirrored. For instance, to type "Hello, World" on QWERTY you would type `^Ge^s^s^w^c W^wr^sd`
7 The configuration table is a simple 2-dimensional array to map from column/row to new column/row. Example `hand_swap_config` for Planck:
10 const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
11 {{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
12 {{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
13 {{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
14 {{11, 3}, {10, 3}, {9, 3}, {8, 3}, {7, 3}, {6, 3}, {5, 3}, {4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
18 Note that the array indices are reversed same as the matrix and the values are of type `keypos_t` which is `{col, row}` and all values are zero-based. In the example above, `hand_swap_config[2][4]` (third row, fifth column) would return `{7, 2}` (third row, eighth column). Yes, this is confusing.
23 |-----------|-------------------------------------------------------------------------|
24 |`SH_T(key)`|Sends `key` with a tap; momentary swap when held. |
25 |`SW_ON` |Turns on swapping and leaves it on. |
26 |`SW_OFF` |Turn off swapping and leaves it off. Good for returning to a known state.|
27 |`SW_MON` |Swaps hands when pressed, returns to normal when released (momentary). |
28 |`SW_MOFF` |Momentarily turns off swap. |
29 |`SH_TG` |Toggles swap on and off with every key press. |
30 |`SH_TT` |Toggles with a tap; momentary when held. |