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Initial implementation of the key_lock feature.

This commit is contained in:
Fredric Silberberg 2017-08-06 01:50:20 -07:00 committed by Jack Humbert
parent 7a9fb7c96b
commit 8e1be7c792
8 changed files with 165 additions and 2 deletions
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5
common_features.mk
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@ -104,6 +104,11 @@ ifeq ($(strip $(TAP_DANCE_ENABLE)), yes)
SRC += $(QUANTUM_DIR)/process_keycode/process_tap_dance.c
endif
ifeq ($(strip $(KEY_LOCK_ENABLE)), yes)
OPT_DEFS += -DKEY_LOCK_ENABLE
SRC += $(QUANTUM_DIR)/process_keycode/process_key_lock.c
endif
ifeq ($(strip $(PRINTING_ENABLE)), yes)
OPT_DEFS += -DPRINTING_ENABLE
SRC += $(QUANTUM_DIR)/process_keycode/process_printer.c

2
keyboards/nyquist/keymaps/333fred/Makefile
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@ -1,3 +1,5 @@
KEY_LOCK_ENABLE = yes
ifndef QUANTUM_DIR
include ../../../../Makefile
endif

2
keyboards/nyquist/keymaps/333fred/keymap.c
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@ -39,7 +39,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
KC_TAB, KC_Q, KC_W, KC_E, KC_R, KC_T, KC_Y, KC_U, KC_I, KC_O, KC_P, KC_BSLASH, \
KC_ESC, KC_A, KC_S, KC_D, LT(_VIM, KC_F), KC_G, KC_H, KC_J, KC_K, KC_L, KC_SCLN, KC_QUOT, \
OSM(MOD_LSFT), LCTL_T(KC_Z), KC_X, KC_C, KC_V, KC_B, KC_N, KC_M, KC_COMM, KC_DOT, RCTL_T(KC_SLSH), OSM(MOD_RSFT), \
KC_LCTL, KC_LALT, KC_F4, KC_LGUI, OSL(_LOWER), KC_BSPC, KC_SPC, KC_ENT, KC_RALT, KC_EQL, TG(_GAME), KC_DEL \
KC_LCTL, KC_LALT, KC_F4, KC_LGUI, OSL(_LOWER), KC_BSPC, KC_SPC, KC_ENT, KC_LOCK, KC_EQL, TG(_GAME), KC_DEL \
),
/* Lower

120
quantum/process_keycode/process_key_lock.c Normal file
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@ -0,0 +1,120 @@
/* Copyright 2017 Fredric Silberberg
*
* 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 "inttypes.h"
#include "stdint.h"
#include "process_key_lock.h"
#define SHIFT(shift) (((uint64_t)1) << (shift))
#define GET_KEY_ARRAY(code) (((code) < 0x40) ? key_state[0] : \
((code) < 0x80) ? key_state[1] : \
((code) < 0xC0) ? key_state[2] : key_state[3])
#define GET_CODE_INDEX(code) (((code) < 0x40) ? (code) : \
((code) < 0x80) ? (code) - 0x40 : \
((code) < 0xC0) ? (code) - 0x80 : (code) - 0xC0)
#define KEY_STATE(code) (GET_KEY_ARRAY(code) & SHIFT(GET_CODE_INDEX(code))) == SHIFT(GET_CODE_INDEX(code))
#define SET_KEY_ARRAY_STATE(code, val) do { \
switch (code) { \
case 0x00 ... 0x3F: \
key_state[0] = (val); \
break; \
case 0x40 ... 0x7F: \
key_state[1] = (val); \
break; \
case 0x80 ... 0xBF: \
key_state[2] = (val); \
break; \
case 0xC0 ... 0xFF: \
key_state[3] = (val); \
break; \
} \
} while(0)
#define SET_KEY_STATE(code) SET_KEY_ARRAY_STATE(code, (GET_KEY_ARRAY(code) | SHIFT(GET_CODE_INDEX(code))))
#define UNSET_KEY_STATE(code) SET_KEY_ARRAY_STATE(code, (GET_KEY_ARRAY(code)) & ~(SHIFT(GET_CODE_INDEX(code))))
#define IS_STANDARD_KEYCODE(code) ((code) <= 0xFF)
#define print_hex64(num) do { print_hex32((num & 0xFFFFFFFF00000000) >> 32); print_hex32(num & 0x00000000FFFFFFFF); } while (0)
// Locked key state. This is an array of 256 bits, one for each of the standard keys supported qmk.
uint64_t key_state[4] = { 0x0, 0x0, 0x0, 0x0 };
bool watching = false;
bool process_key_lock(uint16_t keycode, keyrecord_t *record) {
// We start by categorizing the keypress event. In the event of a down
// event, there are several possibilities:
// 1. The key is not being locked, and we are not watching for new keys.
// In this case, we bail immediately. This is the common case for down events.
// 2. The key was locked, and we need to unlock it. In this case, we will
// reset the state in our map and return false. When the user releases the
// key, the up event will no longer be masked and the OS will observe the
// released key.
// 3. KC_LOCK was just pressed. In this case, we set up the state machine
// to watch for the next key down event, and finish processing
// 4. The keycode is below 0xFF, and we are watching for new keys. In this case,
// we will send the key down event to the os, and set the key_state for that
// key to mask the up event.
// 5. The keycode is above 0xFF, and we're wathing for new keys. In this case,
// the user pressed a key that we cannot "lock", as it's a series of keys,
// or a macro invocation, or a layer transition, or a custom-defined key, or
// or some other arbitrary code. In this case, we bail immediately, reset
// our watch state, and return true.
//
// In the event of an up event, there are these possibilities:
// 1. The key is not being locked. In this case, we return true and bail
// immediately. This is the common case.
// 2. The key is being locked. In this case, we will mask the up event
// by returning false, so the OS never sees that the key was released
// until the user pressed the key again.
if (record->event.pressed) {
// Non-standard keycode, reset and return
if (!(IS_STANDARD_KEYCODE(keycode) || keycode == KC_LOCK)) {
watching = false;
return true;
}
// If we're already watching, turn off the watch.
if (keycode == KC_LOCK) {
watching = !watching;
return false;
}
if (IS_STANDARD_KEYCODE(keycode)) {
// We check watching first. This is so that in the following scenario, we continue to
// hold the key: KC_LOCK, KC_F, KC_LOCK, KC_F
// If we checked in reverse order, we'd end up holding the key pressed after the second
// KC_F press is registered, when the user likely meant to hold F
if (watching) {
watching = false;
SET_KEY_STATE(keycode);
// Let the standard keymap send the keycode down event. The up event will be masked.
return true;
}
if (KEY_STATE(keycode)) {
UNSET_KEY_STATE(keycode);
// The key is already held, stop this process. The up event will be sent when the user
// releases the key.
return false;
}
}
// Either the key isn't a standard key, or we need to send the down event. Continue standard
// processing
return true;
} else {
// Stop processing if it's a standard key and we're masking up.
return !(IS_STANDARD_KEYCODE(keycode) && KEY_STATE(keycode));
}
}

24
quantum/process_keycode/process_key_lock.h Normal file
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@ -0,0 +1,24 @@
/* Copyright 2017 Fredric Silberberg
*
* 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/>.
*/
#ifndef PROCESS_KEY_LOCK_H
#define PROCESS_KEY_LOCK_H
#include "quantum.h"
bool process_key_lock(uint16_t keycode, keyrecord_t *record);
#endif // PROCESS_KEY_LOCK_H

4
quantum/quantum.c
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@ -193,6 +193,10 @@ bool process_record_quantum(keyrecord_t *record) {
// }
if (!(
#if defined(KEY_LOCK_ENABLE)
// Must run first to be able to mask key_up events.
process_key_lock(keycode, record) &&
#endif
process_record_kb(keycode, record) &&
#if defined(MIDI_ENABLE) && defined(MIDI_ADVANCED)
process_midi(keycode, record) &&

4
quantum/quantum.h
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@ -99,6 +99,10 @@ extern uint32_t default_layer_state;
#include "process_combo.h"
#endif
#ifdef KEY_LOCK_ENABLE
#include "process_key_lock.h"
#endif
#define SEND_STRING(str) send_string(PSTR(str))
extern const bool ascii_to_shift_lut[0x80];
extern const uint8_t ascii_to_keycode_lut[0x80];

4
quantum/quantum_keycodes.h
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@ -419,6 +419,10 @@ enum quantum_keycodes {
OUT_BT,
#endif
#ifdef KEY_LOCK_ENABLE
KC_LOCK,
#endif
// always leave at the end
SAFE_RANGE
};