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#include QMK_KEYBOARD_H
#include USERSPACE_H
#include "oneshot.h"
#ifdef ONESHOT_MOD_ENABLE
/* -------------------------------------------- */
// Add to process_record_user.
/* int8_t keycode_consumed = 0; */
/* #ifdef ONESHOT_ENABLE */
/* keycode_consumed += update_oneshot_modifiers(keycode, record, keycode_consumed); */
/* #endif */
/* -------------------------------------------- */
#define ONESHOT(KEYCODE, MOD) case KEYCODE: return MOD;
#define A_KEY(KEYCODE) case KEYCODE:
#define BLANK(...)
#define CANCEL_KEY BLANK
#define IGNORE_KEY BLANK
// the basic states a oneshot modifier can be in
typedef enum {
ONESHOT_STATE_OFF = 0,
ONESHOT_STATE_PRESSED = 1,
ONESHOT_STATE_QUEUED = 2,
ONESHOT_STATE_CAPSWORD = 3,
ONESHOT_STATE_LOCK = 4,
ONESHOT_STATE_END_PRESSED = 5,
} oneshot_state;
oneshot_state modifiers_state_transitions_normal[5] = {ONESHOT_STATE_PRESSED, ONESHOT_STATE_QUEUED, ONESHOT_STATE_LOCK, ONESHOT_STATE_END_PRESSED, ONESHOT_STATE_END_PRESSED};
static oneshot_state modifiers_with_state[ONESHOT_MOD_COUNT] = {
ONESHOT_STATE_OFF, ONESHOT_STATE_OFF, ONESHOT_STATE_OFF, ONESHOT_STATE_OFF, ONESHOT_STATE_OFF, ONESHOT_STATE_OFF, ONESHOT_STATE_OFF, ONESHOT_STATE_OFF,
};
// oneshot mods always get registered immediately to the operating system, but we also
// need to keep track if the mod(s) got combined with a normal key (applied)
static bool unapplied_mods_present = false;
// keycode of the last pressed 'normal' key which haven't been released yet
static uint16_t repeating_normal_key = 0;
// utility functions (implemented at the bottom of this file)
static void set_modifier_state(oneshot_mod osmod, oneshot_state new_state);
static int8_t set_modifier_state_all(oneshot_state new_state);
static void set_modifier_state_all_from_to(oneshot_state oneshot_state_from, oneshot_state oneshot_state_to);
static bool all_modifiers_are_off(void);
int8_t turnoff_oneshot_modifiers() {
return set_modifier_state_all(ONESHOT_STATE_OFF);
}
// see comment in corresponding headerfile
int8_t update_oneshot_modifiers(uint16_t keycode, keyrecord_t *record, int8_t keycode_consumed) {
// cancel keys
if (is_oneshot_modifier_cancel_key(keycode) && record->event.pressed) {
if (keycode_consumed == 0) {
unapplied_mods_present = false;
keycode_consumed += set_modifier_state_all(ONESHOT_STATE_OFF);
} else {
keycode_consumed = 0;
}
return keycode_consumed;
}
// ignored keys
if (is_oneshot_modifier_ignored_key(keycode)) {
return keycode_consumed;
}
oneshot_mod osmod = get_modifier_for_trigger_key(keycode);
// trigger keys
if (osmod != ONESHOT_NONE) {
oneshot_state state = modifiers_with_state[osmod];
if (record->event.pressed) {
if (state == ONESHOT_STATE_OFF) {
unapplied_mods_present = (repeating_normal_key == 0);
}
oneshot_state tostate = modifiers_state_transitions_normal[state];
set_modifier_state(osmod, tostate);
} else {
if (state == ONESHOT_STATE_PRESSED) {
if (!unapplied_mods_present) {
set_modifier_state(osmod, ONESHOT_STATE_OFF);
} else {
set_modifier_state(osmod, ONESHOT_STATE_QUEUED);
}
} else if (state == ONESHOT_STATE_END_PRESSED) {
set_modifier_state(osmod, ONESHOT_STATE_OFF);
}
}
}
// normal keys
else {
if (record->event.pressed) {
if (!all_modifiers_are_off()) {
if (unapplied_mods_present) {
unapplied_mods_present = false;
} else {
unregister_code(repeating_normal_key);
set_modifier_state_all_from_to(ONESHOT_STATE_QUEUED, ONESHOT_STATE_OFF);
}
}
repeating_normal_key = keycode;
} else {
if (!all_modifiers_are_off()) {
unregister_code(keycode);
set_modifier_state_all_from_to(ONESHOT_STATE_QUEUED, ONESHOT_STATE_OFF);
}
repeating_normal_key = 0;
}
}
return 0;
}
// implementation of utility functions
// registers/unregisters a mod to the operating system on state change if necessary
void update_modifier(oneshot_mod osmod, oneshot_state previous_state, oneshot_state current_state) {
if (previous_state == ONESHOT_STATE_OFF) {
register_code(KC_LCTRL + osmod);
} else {
if (current_state == ONESHOT_STATE_OFF) {
unregister_code(KC_LCTRL + osmod);
}
}
}
void set_modifier_state(oneshot_mod osmod, oneshot_state new_state) {
oneshot_state previous_state = modifiers_with_state[osmod];
if (previous_state != new_state) {
modifiers_with_state[osmod] = new_state;
update_modifier(osmod, previous_state, new_state);
}
}
int8_t set_modifier_state_all(oneshot_state new_state) {
int8_t c = 0;
for (int8_t i = 0; i < ONESHOT_MOD_COUNT; i++) {
oneshot_state previous_state = modifiers_with_state[i];
if (previous_state != new_state) {
modifiers_with_state[i] = new_state;
update_modifier(i, previous_state, new_state);
c += 1;
}
}
return c;
}
void set_modifier_state_all_from_to(oneshot_state oneshot_state_from, oneshot_state oneshot_state_to) {
for (int8_t i = 0; i < ONESHOT_MOD_COUNT; i++) {
if (modifiers_with_state[i] == oneshot_state_from) {
modifiers_with_state[i] = oneshot_state_to;
update_modifier(i, oneshot_state_from, oneshot_state_to);
}
}
}
bool all_modifiers_are_off() {
for (int8_t i = 0; i < ONESHOT_MOD_COUNT; i++) {
if (modifiers_with_state[i] != ONESHOT_STATE_OFF) {
return false;
}
}
return true;
}
oneshot_mod get_modifier_for_trigger_key(uint16_t keycode)
{
switch (keycode)
{
#include "oneshot.def"
return true;
default:
return ONESHOT_NONE;
}
}
// turn off the oneshot macros
#undef ONESHOT
#define ONESHOT BLANK
#define NSHOT BLANK
#undef CANCEL_KEY
#undef IGNORE_KEY
#define CANCEL_KEY A_KEY
#define IGNORE_KEY BLANK
bool is_oneshot_modifier_cancel_key(uint16_t keycode) {
switch (keycode) {
#include "oneshot.def"
return true;
default:
return false;
}
}
#undef CANCEL_KEY
#undef IGNORE_KEY
#define CANCEL_KEY BLANK
#define IGNORE_KEY A_KEY
bool is_oneshot_modifier_ignored_key(uint16_t keycode) {
switch (keycode) {
#include "oneshot.def"
return true;
default:
return false;
}
}
#endif
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