Add one-hand support.
This adds an action, `ACTION_SWAP_HANDS`, that swaps the the keys on the keyboard across a keymap-defined hemisphere in order to support one-hand typing without requiring a separate one-handed layer. See updated `doc/keymap.md` for more information.
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5 changed files with 80 additions and 1 deletions
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@ -455,6 +455,24 @@ Turn the backlight on and off without changing level.
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### 2.6 Swap-Hands Action
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The swap-hands action allows support for one-handed keyboards without requiring a separate layer. Set `ONEHAND_ENABLE` in the Makefile and define a `hand_swap_config` entry in your keymap. Now whenever the `ACTION_SWAP_HANDS` command is executed the keyboard is mirrored. For instance, to type "Hello, World" on QWERTY you would type `^Ge^s^s^w^c W^wr^sd`
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The configuration table is a simple 2-dimensional array to map from column/row to new column/row. Example `hand_swap_config` for Planck:
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```
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const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS] = {
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{{11, 0}, {10, 0}, {9, 0}, {8, 0}, {7, 0}, {6, 0}, {5, 0}, {4, 0}, {3, 0}, {2, 0}, {1, 0}, {0, 0}},
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{{11, 1}, {10, 1}, {9, 1}, {8, 1}, {7, 1}, {6, 1}, {5, 1}, {4, 1}, {3, 1}, {2, 1}, {1, 1}, {0, 1}},
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{{11, 2}, {10, 2}, {9, 2}, {8, 2}, {7, 2}, {6, 2}, {5, 2}, {4, 2}, {3, 2}, {2, 2}, {1, 2}, {0, 2}},
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{{11, 3}, {10, 3}, {9, 3}, {8, 3}, {7, 3}, {6, 3}, {5, 3}, {4, 3}, {3, 3}, {2, 3}, {1, 3}, {0, 3}},
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};
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```
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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).
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## 3. Layer switching Example
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There are some ways to switch layer with 'Layer' actions.
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@ -85,6 +85,10 @@ ifeq ($(strip $(BLUETOOTH_ENABLE)), yes)
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OPT_DEFS += -DBLUETOOTH_ENABLE
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endif
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ifeq ($(strip $(ONEHAND_ENABLE)), yes)
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OPT_DEFS += -DONEHAND_ENABLE
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endif
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ifeq ($(strip $(KEYMAP_SECTION_ENABLE)), yes)
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OPT_DEFS += -DKEYMAP_SECTION_ENABLE
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@ -41,6 +41,12 @@ void action_exec(keyevent_t event)
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dprint("EVENT: "); debug_event(event); dprintln();
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}
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#ifdef ONEHAND_ENABLE
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if (!IS_NOEVENT(event)) {
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process_hand_swap(&event);
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}
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#endif
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keyrecord_t record = { .event = event };
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#ifndef NO_ACTION_TAPPING
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@ -53,6 +59,26 @@ void action_exec(keyevent_t event)
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#endif
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}
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#ifdef ONEHAND_ENABLE
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bool swap_hands = false;
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void process_hand_swap(keyevent_t *event) {
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static swap_state_row_t swap_state[MATRIX_ROWS];
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keypos_t pos = event->key;
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swap_state_row_t col_bit = (swap_state_row_t)1<<pos.col;
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bool do_swap = event->pressed ? swap_hands :
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swap_state[pos.row] & (col_bit);
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if (do_swap) {
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event->key = hand_swap_config[pos.row][pos.col];
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swap_state[pos.row] |= col_bit;
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} else {
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swap_state[pos.row] &= ~(col_bit);
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}
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}
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#endif
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#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
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bool disable_action_cache = false;
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@ -439,6 +465,13 @@ void process_action(keyrecord_t *record, action_t action)
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break;
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#endif
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case ACT_COMMAND:
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switch (action.command.id) {
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#ifdef ONEHAND_ENABLE
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case CMD_SWAP_HANDS:
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swap_hands = event.pressed;
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break;
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#endif
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}
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break;
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#ifndef NO_ACTION_FUNCTION
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case ACT_FUNCTION:
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@ -65,6 +65,24 @@ bool process_record_quantum(keyrecord_t *record);
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#if !defined(NO_ACTION_LAYER) && defined(PREVENT_STUCK_MODIFIERS)
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extern bool disable_action_cache;
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#endif
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/* Code for handling one-handed key modifiers. */
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#ifdef ONEHAND_ENABLE
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extern bool swap_hands;
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extern const keypos_t hand_swap_config[MATRIX_ROWS][MATRIX_COLS];
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#if (MATRIX_COLS <= 8)
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typedef uint8_t swap_state_row_t;
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#elif (MATRIX_COLS <= 16)
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typedef uint16_t swap_state_row_t;
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#elif (MATRIX_COLS <= 32)
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typedef uint32_t swap_state_row_t;
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#else
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#error "MATRIX_COLS: invalid value"
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#endif
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void process_hand_swap(keyevent_t *record);
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#endif
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void process_record_nocache(keyrecord_t *record);
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void process_record(keyrecord_t *record);
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void process_action(keyrecord_t *record, action_t action);
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@ -295,6 +295,10 @@ enum backlight_opt {
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BACKLIGHT_STEP = 3,
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BACKLIGHT_LEVEL = 4,
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};
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enum command_id {
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CMD_SWAP_HANDS = 0x14,
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};
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/* Macro */
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#define ACTION_MACRO(id) ACTION(ACT_MACRO, (id))
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#define ACTION_MACRO_TAP(id) ACTION(ACT_MACRO, FUNC_TAP<<8 | (id))
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@ -306,7 +310,7 @@ enum backlight_opt {
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#define ACTION_BACKLIGHT_STEP() ACTION(ACT_BACKLIGHT, BACKLIGHT_STEP << 8)
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#define ACTION_BACKLIGHT_LEVEL(level) ACTION(ACT_BACKLIGHT, BACKLIGHT_LEVEL << 8 | (level))
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/* Command */
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#define ACTION_COMMAND(id, opt) ACTION(ACT_COMMAND, (opt)<<8 | (addr))
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#define ACTION_COMMAND(id, opt) ACTION(ACT_COMMAND, (opt)<<8 | (id))
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/* Function */
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enum function_opts {
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FUNC_TAP = 0x8, /* indciates function is tappable */
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#define ACTION_FUNCTION(id) ACTION(ACT_FUNCTION, (id))
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#define ACTION_FUNCTION_TAP(id) ACTION(ACT_FUNCTION, FUNC_TAP<<8 | (id))
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#define ACTION_FUNCTION_OPT(id, opt) ACTION(ACT_FUNCTION, (opt)<<8 | (id))
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/* OneHand Support */
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#define ACTION_SWAP_HANDS() ACTION_COMMAND(CMD_SWAP_HANDS, 0)
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#endif /* ACTION_CODE_H */
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