keychron_qmk_firmware/users/333fred/333fred.c

/*
  Copyright (c) 2020 Fred Silberberg

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is
  furnished to do so, subject to the following conditions:

  The above copyright notice and this permission notice shall be included in all
  copies or substantial portions of the Software.

  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.
*/

#include "333fred.h"
#include "quantum.h"
#include "action.h"

typedef enum {
    SINGLE_TAP, SINGLE_HOLD, DOUBLE
} tap_dance_state_enum;

static tap_dance_state_enum tap_dance_state;
static bool tap_dance_active = false;

void tap_dance_sym_vim_finished(qk_tap_dance_state_t *state, void *user_data) {
    // Determine the current state
    if (state->count == 1) {
        if (state->interrupted || state->pressed == 0) tap_dance_state = SINGLE_TAP;
        else tap_dance_state = SINGLE_HOLD;
    } else {
        // Handle any number of other taps as a VIM movement hold
        tap_dance_state = DOUBLE;
    }

    switch (tap_dance_state) {
        case SINGLE_TAP:
            if (tap_dance_active) {
                reset_oneshot_layer();
                tap_dance_active = false;
            } else {
                set_oneshot_layer(SYMB, ONESHOT_START);
                tap_dance_active = true;
            }
            break;
        case SINGLE_HOLD:
            layer_on(SYMB);
            break;
        case DOUBLE:
            layer_on(VIM);
            break;
    }
}

void tap_dance_sym_vim_reset(qk_tap_dance_state_t *state, void *user_data) {
    switch(tap_dance_state) {
        case SINGLE_TAP:
            clear_oneshot_layer_state(ONESHOT_PRESSED);
            break;
        case SINGLE_HOLD:
            layer_off(SYMB);
            break;
        case DOUBLE:
            layer_off(VIM);
            break;
    }
}

void tap_dance_copy_paste_finished(qk_tap_dance_state_t *state, void *user_data) {
    bool is_paste = state->count == 2;
    // If either the one-shot shift is set, or if shift is being held, count as shift being held.
    // We'll clear the one-shot shift if it was held
    uint8_t one_shot_mods = get_oneshot_mods();
    bool is_shift = false;

    if (get_mods() & MOD_MASK_SHIFT) {
        is_shift = true;
    } else if (one_shot_mods & MOD_MASK_SHIFT) {
        set_oneshot_mods(one_shot_mods & ~MOD_MASK_SHIFT);
        is_shift = true;
    }

    if (is_paste) {
        if (is_shift) {
            SEND_STRING(SS_LSFT(SS_TAP(X_INSERT)));
        } else {
            SEND_STRING(SS_LCTRL("v"));
        }
    } else {
        if (is_shift) {
            SEND_STRING(SS_LCTRL(SS_TAP(X_INSERT)));
        } else {
            SEND_STRING(SS_LCTRL("c"));
        }
    }
}

qk_tap_dance_action_t tap_dance_actions[] = {
    [TD_SYM_VIM] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, tap_dance_sym_vim_finished, tap_dance_sym_vim_reset),
    [TD_COPY_PASTE] = ACTION_TAP_DANCE_FN_ADVANCED(NULL, tap_dance_copy_paste_finished, NULL)
};

void tap_dance_process_keycode(uint16_t keycode) {
    if (tap_dance_state == SINGLE_TAP && keycode != TD(TD_SYM_VIM)) {
        tap_dance_active = false;
    }
}

__attribute__ ((weak))
void layer_state_set_rgb(uint32_t state) {}

uint32_t layer_state_set_user(uint32_t state) {
  layer_state_set_rgb(state);
  return state;
}

bool try_handle_macro(uint16_t keycode, keyrecord_t *record) {
    switch (keycode)
    {
        case DLEFT:
            if (record->event.pressed)
                SEND_STRING(SS_LGUI(SS_LALT(SS_TAP(X_LEFT))));
            return true;
        case DRIGHT:
            if (record->event.pressed)
                SEND_STRING(SS_LGUI(SS_LALT(SS_TAP(X_RIGHT))));
            return true;
        case PSCREEN_APP:
            if (record->event.pressed)
                SEND_STRING(SS_LALT(SS_TAP(X_PSCREEN)));
            return true;

        default:
            return false;
    }
}