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Diffstat (limited to 'common/layer.c')
| -rw-r--r-- | common/layer.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/common/layer.c b/common/layer.c new file mode 100644 index 0000000000..0854eede0d --- /dev/null +++ b/common/layer.c @@ -0,0 +1,207 @@ +/* +Copyright 2011 Jun Wako <wakojun@gmail.com> + +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 "keymap.h" +#include "host.h" +#include "debug.h" +#include "timer.h" +#include "usb_keycodes.h" +#include "layer.h" + + +/* + * Parameters: + * SWITCH_DELAY |=======| + * SEND_FN_TERM |================| + * + * Fn key processing cases: + * 1. release Fn after SEND_FN_TERM. + * Layer sw ___________|~~~~~~~~~~~|___ + * Fn press ___|~~~~~~~~~~~~~~~~~~~|___ + * Fn send ___________________________ + * + * 2. release Fn during SEND_FN_TERM.(not layer used) + * Layer sw ___________|~~~~~~|________ + * Fn press ___|~~~~~~~~~~~~~~|________ + * Fn key send __________________|~|______ + * other key press ___________________________ + * other key send ___________________________ + * + * 3. release Fn during SEND_FN_TERM.(layer used) + * Layer sw ___________|~~~~~~|________ + * Fn press ___|~~~~~~~~~~~~~~|________ + * Fn key send ___________________________ + * Fn send ___________________________ + * other key press _____________|~~|__________ + * other key send _____________|~~|__________ + * + * 4. press other key during SWITCH_DELAY. + * Layer sw ___________________________ + * Fn key press ___|~~~~~~~~~|_____________ + * Fn key send ______|~~~~~~|_____________ + * other key press ______|~~~|________________ + * other key send _______|~~|________________ + * + * 5. press Fn while press other key. + * Layer sw ___________________________ + * Fn key press ___|~~~~~~~~~|_____________ + * Fn key send ___|~~~~~~~~~|_____________ + * other key press ~~~~~~~|___________________ + * other key send ~~~~~~~|___________________ + * + * 6. press Fn twice quickly and keep holding down.(repeat) + * Layer sw ___________________________ + * Fn key press ___|~|____|~~~~~~~~~~~~~~~~ + * Fn key send _____|~|__|~~~~~~~~~~~~~~~~ + */ + +// LAYER_SWITCH_DELAY: prevent from moving to new layer +#ifndef LAYER_SWITCH_DELAY +# define LAYER_SWITCH_DELAY 150 +#endif + +// LAYER_SEND_FN_TERM: send keycode if release key in this term +#ifndef LAYER_SEND_FN_TERM +# define LAYER_SEND_FN_TERM 500 +#endif + + +uint8_t default_layer = 0; +uint8_t current_layer = 0; + +static bool layer_used = false; +static uint8_t new_layer(uint8_t fn_bits); + + +uint8_t layer_get_keycode(uint8_t row, uint8_t col) +{ + uint8_t code = keymap_get_keycode(current_layer, row, col); + // normal key or mouse key + if ((IS_KEY(code) || IS_MOUSEKEY(code))) { + layer_used = true; + } + return code; +} + +// bit substract b from a +#define BIT_SUBST(a, b) (a&(a^b)) +void layer_switching(uint8_t fn_bits) +{ + // layer switching + static uint8_t last_fn = 0; + static uint8_t last_mods = 0; + static uint16_t last_timer = 0; + static uint8_t sent_fn = 0; + + if (fn_bits == last_fn) { // Fn state is not changed + if (fn_bits == 0) { + // do nothing + } else { + if (!keymap_fn_keycode(BIT_SUBST(fn_bits, sent_fn)) || + timer_elapsed(last_timer) > LAYER_SWITCH_DELAY) { + uint8_t _layer_to_switch = new_layer(BIT_SUBST(fn_bits, sent_fn)); + if (current_layer != _layer_to_switch) { // not switch layer yet + debug("Fn case: 1,2,3(LAYER_SWITCH_DELAY passed)\n"); + debug("Switch Layer: "); debug_hex(current_layer); + current_layer = _layer_to_switch; + layer_used = false; + debug(" -> "); debug_hex(current_layer); debug("\n"); + } + } else { + if (host_has_anykey()) { // other keys is pressed + uint8_t _fn_to_send = BIT_SUBST(fn_bits, sent_fn); + if (_fn_to_send) { + debug("Fn case: 4(press other key during SWITCH_DELAY.)\n"); + // send only Fn key first + uint8_t tmp_mods = keyboard_report->mods; + host_add_code(keymap_fn_keycode(_fn_to_send)); + host_set_mods(last_mods); + host_send_keyboard_report(); + host_set_mods(tmp_mods); + host_del_code(keymap_fn_keycode(_fn_to_send)); + sent_fn |= _fn_to_send; + } + } + } + // add Fn keys to send + //host_add_code(keymap_fn_keycode(fn_bits&sent_fn)); // TODO: do all Fn keys + } + } else { // Fn state is changed(edge) + uint8_t fn_changed = 0; + + debug("fn_bits: "); debug_bin(fn_bits); debug("\n"); + debug("sent_fn: "); debug_bin(sent_fn); debug("\n"); + debug("last_fn: "); debug_bin(last_fn); debug("\n"); + debug("last_mods: "); debug_hex(last_mods); debug("\n"); + debug("last_timer: "); debug_hex16(last_timer); debug("\n"); + debug("timer_count: "); debug_hex16(timer_count); debug("\n"); + + // pressed Fn + if ((fn_changed = BIT_SUBST(fn_bits, last_fn))) { + debug("fn_changed: "); debug_bin(fn_changed); debug("\n"); + if (host_has_anykey()) { + debug("Fn case: 5(pressed Fn with other key)\n"); + sent_fn |= fn_changed; + } else if (fn_changed & sent_fn) { // pressed same Fn in a row + if (timer_elapsed(last_timer) > LAYER_SEND_FN_TERM) { + debug("Fn case: 6(not repeat)\n"); + // time passed: not repeate + sent_fn &= ~fn_changed; + } else { + debug("Fn case: 6(repeat)\n"); + } + } + } + // released Fn + if ((fn_changed = BIT_SUBST(last_fn, fn_bits))) { + debug("fn_changed: "); debug_bin(fn_changed); debug("\n"); + if (timer_elapsed(last_timer) < LAYER_SEND_FN_TERM) { + if (!layer_used && BIT_SUBST(fn_changed, sent_fn)) { + debug("Fn case: 2(send Fn one shot: released Fn during LAYER_SEND_FN_TERM)\n"); + // send only Fn key first + uint8_t tmp_mods = keyboard_report->mods; + host_add_code(keymap_fn_keycode(fn_changed)); + host_set_mods(last_mods); + host_send_keyboard_report(); + host_set_mods(tmp_mods); + host_del_code(keymap_fn_keycode(fn_changed)); + sent_fn |= fn_changed; + } + } + debug("Switch Layer(released Fn): "); debug_hex(current_layer); + current_layer = new_layer(BIT_SUBST(fn_bits, sent_fn)); + debug(" -> "); debug_hex(current_layer); debug("\n"); + } + + layer_used = false; + last_fn = fn_bits; + last_mods = keyboard_report->mods; + last_timer = timer_read(); + } + // send Fn keys + for (uint8_t i = 0; i < 8; i++) { + if ((sent_fn & fn_bits) & (1<<i)) { + host_add_code(keymap_fn_keycode(1<<i)); + } + } +} + +inline +static uint8_t new_layer(uint8_t fn_bits) +{ + return (fn_bits ? keymap_fn_layer(fn_bits) : default_layer); +} |