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-rw-r--r--common/layer.c207
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diff --git a/common/layer.c b/common/layer.c
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-/*
-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);
-}