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Diffstat (limited to 'users/muppetjones/features/casemodes.c')
| -rw-r--r-- | users/muppetjones/features/casemodes.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/users/muppetjones/features/casemodes.c b/users/muppetjones/features/casemodes.c new file mode 100644 index 0000000000..da7c5e8fa9 --- /dev/null +++ b/users/muppetjones/features/casemodes.c @@ -0,0 +1,247 @@ +/* Copyright 2021 Andrew Rae ajrae.nv@gmail.com @andrewjrae + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include "casemodes.h" + +/* The caps word concept started with me @iaap on splitkb.com discord. + * However it has been implemented and extended by many splitkb.com users: + * - @theol0403 made many improvements to initial implementation + * - @precondition used caps lock rather than shifting + * - @dnaq his own implementation which also used caps lock + * - @sevanteri added underscores on spaces + * - @metheon extended on @sevanteri's work and added specific modes for + * snake_case and SCREAMING_SNAKE_CASE + * - @baffalop came up with the idea for xcase, which he implements in his own + * repo, however this is implemented by @iaap with support also for one-shot-shift. + * - @sevanteri + * - fixed xcase waiting mode to allow more modified keys and keys from other layers. + * - Added @baffalop's separator defaulting on first keypress, with a + * configurable default separator and overrideable function to determine + * if the default should be used. + */ + +#ifndef DEFAULT_XCASE_SEPARATOR +# define DEFAULT_XCASE_SEPARATOR KC_UNDS +#endif + +#define IS_OSM(keycode) (keycode >= QK_ONE_SHOT_MOD && keycode <= QK_ONE_SHOT_MOD_MAX) + +// bool to keep track of the caps word state +static bool caps_word_on = false; + +// enum to keep track of the xcase state +static enum xcase_state xcase_state = XCASE_OFF; +// the keycode of the xcase delimiter +static uint16_t xcase_delimiter; +// the number of keys to the last delimiter +static int8_t distance_to_last_delim = -1; + +// Check whether caps word is on +bool caps_word_enabled(void) { return caps_word_on; } + +// Enable caps word +void enable_caps_word(void) { + caps_word_on = true; +#ifndef CAPSWORD_USE_SHIFT + if (!host_keyboard_led_state().caps_lock) { + tap_code(KC_CAPS); + } +#endif +} + +// Disable caps word +void disable_caps_word(void) { + caps_word_on = false; +#ifndef CAPSWORD_USE_SHIFT + if (host_keyboard_led_state().caps_lock) { + tap_code(KC_CAPS); + } +#else + unregister_mods(MOD_LSFT); +#endif +} + +// Toggle caps word +void toggle_caps_word(void) { + if (caps_word_on) { + disable_caps_word(); + } else { + enable_caps_word(); + } +} + +// Get xcase state +enum xcase_state get_xcase_state(void) { return xcase_state; } + +// Enable xcase and pickup the next keystroke as the delimiter +void enable_xcase(void) { xcase_state = XCASE_WAIT; } + +// Enable xcase with the specified delimiter +void enable_xcase_with(uint16_t delimiter) { + xcase_state = XCASE_ON; + xcase_delimiter = delimiter; + distance_to_last_delim = -1; +} + +// Disable xcase +void disable_xcase(void) { xcase_state = XCASE_OFF; } + +// Place the current xcase delimiter +static void place_delimiter(void) { + if (IS_OSM(xcase_delimiter)) { + // apparently set_oneshot_mods() is dumb and doesn't deal with handedness for you + uint8_t mods = xcase_delimiter & 0x10 ? (xcase_delimiter & 0x0F) << 4 : xcase_delimiter & 0xFF; + set_oneshot_mods(mods); + } else { + tap_code16(xcase_delimiter); + } +} + +// Removes a delimiter, used for double tap space exit +static void remove_delimiter(void) { + if (IS_OSM(xcase_delimiter)) { + clear_oneshot_mods(); + } else { + tap_code(KC_BSPC); + } +} + +// overrideable function to determine whether the case mode should stop +__attribute__((weak)) bool terminate_case_modes(uint16_t keycode, const keyrecord_t *record) { + switch (keycode) { + // Keycodes to ignore (don't disable caps word) + case KC_A ... KC_Z: + case KC_1 ... KC_0: + case KC_MINS: + case KC_BSPC: + // If mod chording disable the mods + if (record->event.pressed && (get_mods() != 0)) { + return true; + } + break; + case KC_UNDS: + // Allow to be pressed with or without a modifier (prob w/ shift) + break; + default: + if (record->event.pressed) { + return true; + } + break; + } + return false; +} + +/* overrideable function to determine whether to use the default separator on + * first keypress when waiting for the separator. */ +__attribute__((weak)) bool use_default_xcase_separator(uint16_t keycode, const keyrecord_t *record) { + // for example: + /* switch (keycode) { */ + /* case KC_A ... KC_Z: */ + /* case KC_1 ... KC_0: */ + /* return true; */ + /* } */ + return false; +} + +bool process_case_modes(uint16_t keycode, const keyrecord_t *record) { + if (caps_word_on || xcase_state) { + if ((QK_MOD_TAP <= keycode && keycode <= QK_MOD_TAP_MAX) || (QK_LAYER_TAP <= keycode && keycode <= QK_LAYER_TAP_MAX)) { + // Earlier return if this has not been considered tapped yet + if (record->tap.count == 0) return true; + keycode = keycode & 0xFF; + } + + if (keycode >= QK_LAYER_TAP && keycode <= QK_ONE_SHOT_LAYER_MAX) { + // let special keys and normal modifiers go through + return true; + } + + if (xcase_state == XCASE_WAIT) { + // grab the next input to be the delimiter + if (use_default_xcase_separator(keycode, record)) { + enable_xcase_with(DEFAULT_XCASE_SEPARATOR); + } else if (record->event.pressed) { + // factor in mods + if (get_mods() & MOD_MASK_SHIFT) { + keycode = LSFT(keycode); + } else if (get_mods() & MOD_BIT(KC_RALT)) { + keycode = RALT(keycode); + } + enable_xcase_with(keycode); + return false; + } else { + if (IS_OSM(keycode)) { + // this catches the OSM release if no other key was pressed + set_oneshot_mods(0); + enable_xcase_with(keycode); + return false; + } + // let other special keys go through + return true; + } + } + + if (record->event.pressed) { + // handle xcase mode + if (xcase_state == XCASE_ON) { + // place the delimiter if space is tapped + if (keycode == KC_SPACE) { + if (distance_to_last_delim != 0) { + place_delimiter(); + distance_to_last_delim = 0; + return false; + } + // remove the delimiter and disable modes + else { + remove_delimiter(); + disable_xcase(); + disable_caps_word(); + return true; + } + } + // decrement distance to delimiter on back space + else if (keycode == KC_BSPC) { + --distance_to_last_delim; + } + // don't increment distance to last delim if negative + else if (distance_to_last_delim >= 0) { + // puts back a one shot delimiter if you we're back to the delimiter pos + if (distance_to_last_delim == 0 && (IS_OSM(xcase_delimiter))) { + place_delimiter(); + } + ++distance_to_last_delim; + } + + } // end XCASE_ON + + // check if the case modes have been terminated + if (terminate_case_modes(keycode, record)) { + disable_caps_word(); + disable_xcase(); + } +#ifdef CAPSWORD_USE_SHIFT + else if (keycode >= KC_A && keycode <= KC_Z) { + tap_code16(LSFT(keycode)); + return false; + } +#endif + + } // end if event.pressed + + return true; + } + return true; +} |