qmk_firmware/quantum/keymap.h
Jack Humbert 65faab3b89 Moves features to their own files (process_*), adds tap dance feature (#460)
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* remove extra led.c [ci skip]

* audio and midi moved over to separate files

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* correct include

* quantum: Add a tap dance feature (#451)

* quantum: Add a tap dance feature

With this feature one can specify keys that behave differently, based on
the amount of times they have been tapped, and when interrupted, they
get handled before the interrupter.

To make it clear how this is different from `ACTION_FUNCTION_TAP`, lets
explore a certain setup! We want one key to send `Space` on single tap,
but `Enter` on double-tap.

With `ACTION_FUNCTION_TAP`, it is quite a rain-dance to set this up, and
has the problem that when the sequence is interrupted, the interrupting
key will be send first. Thus, `SPC a` will result in `a SPC` being sent,
if they are typed within `TAPPING_TERM`. With the tap dance feature,
that'll come out as `SPC a`, correctly.

The implementation hooks into two parts of the system, to achieve this:
into `process_record_quantum()`, and the matrix scan. We need the latter
to be able to time out a tap sequence even when a key is not being
pressed, so `SPC` alone will time out and register after `TAPPING_TERM`
time.

But lets start with how to use it, first!

First, you will need `TAP_DANCE_ENABLE=yes` in your `Makefile`, because
the feature is disabled by default. This adds a little less than 1k to
the firmware size. Next, you will want to define some tap-dance keys,
which is easiest to do with the `TD()` macro, that - similar to `F()`,
takes a number, which will later be used as an index into the
`tap_dance_actions` array.

This array specifies what actions shall be taken when a tap-dance key is
in action. Currently, there are two possible options:

* `ACTION_TAP_DANCE_DOUBLE(kc1, kc2)`: Sends the `kc1` keycode when
  tapped once, `kc2` otherwise.
* `ACTION_TAP_DANCE_FN(fn)`: Calls the specified function - defined in
  the user keymap - with the current state of the tap-dance action.

The first option is enough for a lot of cases, that just want dual
roles. For example, `ACTION_TAP_DANCE(KC_SPC, KC_ENT)` will result in
`Space` being sent on single-tap, `Enter` otherwise.

And that's the bulk of it!

Do note, however, that this implementation does have some consequences:
keys do not register until either they reach the tapping ceiling, or
they time out. This means that if you hold the key, nothing happens, no
repeat, no nothing. It is possible to detect held state, and register an
action then too, but that's not implemented yet. Keys also unregister
immediately after being registered, so you can't even hold the second
tap. This is intentional, to be consistent.

And now, on to the explanation of how it works!

The main entry point is `process_tap_dance()`, called from
`process_record_quantum()`, which is run for every keypress, and our
handler gets to run early. This function checks whether the key pressed
is a tap-dance key. If it is not, and a tap-dance was in action, we
handle that first, and enqueue the newly pressed key. If it is a
tap-dance key, then we check if it is the same as the already active
one (if there's one active, that is). If it is not, we fire off the old
one first, then register the new one. If it was the same, we increment
the counter and the timer.

This means that you have `TAPPING_TERM` time to tap the key again, you
do not have to input all the taps within that timeframe. This allows for
longer tap counts, with minimal impact on responsiveness.

Our next stop is `matrix_scan_tap_dance()`. This handles the timeout of
tap-dance keys.

For the sake of flexibility, tap-dance actions can be either a pair of
keycodes, or a user function. The latter allows one to handle higher tap
counts, or do extra things, like blink the LEDs, fiddle with the
backlighting, and so on. This is accomplished by using an union, and
some clever macros.

In the end, lets see a full example!

```c
enum {
 CT_SE = 0,
 CT_CLN,
 CT_EGG
};

/* Have the above three on the keymap, TD(CT_SE), etc... */

void dance_cln (qk_tap_dance_state_t *state) {
  if (state->count == 1) {
    register_code (KC_RSFT);
    register_code (KC_SCLN);
    unregister_code (KC_SCLN);
    unregister_code (KC_RSFT);
  } else {
    register_code (KC_SCLN);
    unregister_code (KC_SCLN);
    reset_tap_dance (state);
  }
}

void dance_egg (qk_tap_dance_state_t *state) {
  if (state->count >= 100) {
    SEND_STRING ("Safety dance!");
    reset_tap_dance (state);
  }
}

const qk_tap_dance_action_t tap_dance_actions[] = {
  [CT_SE]  = ACTION_TAP_DANCE_DOUBLE (KC_SPC, KC_ENT)
 ,[CT_CLN] = ACTION_TAP_DANCE_FN (dance_cln)
 ,[CT_EGG] = ACTION_TAP_DANCE_FN (dance_egg)
};
```

This addresses #426.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* hhkb: Fix the build with the new tap-dance feature

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* tap_dance: Move process_tap_dance further down

Process the tap dance stuff after midi and audio, because those don't
process keycodes, but row/col positions.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* tap_dance: Use conditionals instead of dummy functions

To be consistent with how the rest of the quantum features are
implemented, use ifdefs instead of dummy functions.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

* Merge branch 'master' into quantum-keypress-process

# Conflicts:
#	Makefile
#	keyboards/planck/rev3/config.h
#	keyboards/planck/rev4/config.h

* update build script
2016-06-29 17:49:41 -04:00

324 lines
8.3 KiB
C

/*
Copyright 2012,2013 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/>.
*/
#ifndef KEYMAP_H
#define KEYMAP_H
#include <stdint.h>
#include <stdbool.h>
#include "action.h"
#include <avr/pgmspace.h>
#include "keycode.h"
#include "action_macro.h"
#include "report.h"
#include "host.h"
// #include "print.h"
#include "debug.h"
#include "keycode_config.h"
/* translates key to keycode */
uint16_t keymap_key_to_keycode(uint8_t layer, keypos_t key);
/* translates Fn keycode to action */
action_t keymap_fn_to_action(uint16_t keycode);
extern const uint16_t keymaps[][MATRIX_ROWS][MATRIX_COLS];
extern const uint16_t fn_actions[];
enum quantum_keycodes {
// Ranges used in shortucuts - not to be used directly
QK_TMK = 0x0000,
QK_TMK_MAX = 0x00FF,
QK_MODS = 0x0100,
QK_LCTL = 0x0100,
QK_LSFT = 0x0200,
QK_LALT = 0x0400,
QK_LGUI = 0x0800,
QK_RCTL = 0x1100,
QK_RSFT = 0x1200,
QK_RALT = 0x1400,
QK_RGUI = 0x1800,
QK_MODS_MAX = 0x1FFF,
QK_FUNCTION = 0x2000,
QK_FUNCTION_MAX = 0x2FFF,
QK_MACRO = 0x3000,
QK_MACRO_MAX = 0x3FFF,
QK_LAYER_TAP = 0x4000,
QK_LAYER_TAP_MAX = 0x4FFF,
QK_TO = 0x5000,
QK_TO_MAX = 0x50FF,
QK_MOMENTARY = 0x5100,
QK_MOMENTARY_MAX = 0x51FF,
QK_DEF_LAYER = 0x5200,
QK_DEF_LAYER_MAX = 0x52FF,
QK_TOGGLE_LAYER = 0x5300,
QK_TOGGLE_LAYER_MAX = 0x53FF,
QK_ONE_SHOT_LAYER = 0x5400,
QK_ONE_SHOT_LAYER_MAX = 0x54FF,
QK_ONE_SHOT_MOD = 0x5500,
QK_ONE_SHOT_MOD_MAX = 0x55FF,
#ifndef DISABLE_CHORDING
QK_CHORDING = 0x5600,
QK_CHORDING_MAX = 0x56FF,
#endif
QK_MOD_TAP = 0x6000,
QK_MOD_TAP_MAX = 0x6FFF,
QK_TAP_DANCE = 0x7100,
QK_TAP_DANCE_MAX = 0x71FF,
#ifdef UNICODE_ENABLE
QK_UNICODE = 0x8000,
QK_UNICODE_MAX = 0xFFFF,
#endif
// Loose keycodes - to be used directly
RESET = 0x7000,
DEBUG,
MAGIC_SWAP_CONTROL_CAPSLOCK,
MAGIC_CAPSLOCK_TO_CONTROL,
MAGIC_SWAP_LALT_LGUI,
MAGIC_SWAP_RALT_RGUI,
MAGIC_NO_GUI,
MAGIC_SWAP_GRAVE_ESC,
MAGIC_SWAP_BACKSLASH_BACKSPACE,
MAGIC_HOST_NKRO,
MAGIC_SWAP_ALT_GUI,
MAGIC_UNSWAP_CONTROL_CAPSLOCK,
MAGIC_UNCAPSLOCK_TO_CONTROL,
MAGIC_UNSWAP_LALT_LGUI,
MAGIC_UNSWAP_RALT_RGUI,
MAGIC_UNNO_GUI,
MAGIC_UNSWAP_GRAVE_ESC,
MAGIC_UNSWAP_BACKSLASH_BACKSPACE,
MAGIC_UNHOST_NKRO,
MAGIC_UNSWAP_ALT_GUI,
// Leader key
#ifndef DISABLE_LEADER
KC_LEAD,
#endif
// Audio on/off/toggle
AU_ON,
AU_OFF,
AU_TOG,
// Music mode on/off/toggle
MU_ON,
MU_OFF,
MU_TOG,
// Music voice iterate
MUV_IN,
MUV_DE,
// Midi mode on/off
MIDI_ON,
MIDI_OFF,
// Backlight functionality
BL_0,
BL_1,
BL_2,
BL_3,
BL_4,
BL_5,
BL_6,
BL_7,
BL_8,
BL_9,
BL_10,
BL_11,
BL_12,
BL_13,
BL_14,
BL_15,
BL_DEC,
BL_INC,
BL_TOGG,
BL_STEP,
// Left shift, open paren
KC_LSPO,
// Right shift, close paren
KC_RSPC,
// always leave at the end
SAFE_RANGE
};
// Ability to use mods in layouts
#define LCTL(kc) (kc | QK_LCTL)
#define LSFT(kc) (kc | QK_LSFT)
#define LALT(kc) (kc | QK_LALT)
#define LGUI(kc) (kc | QK_LGUI)
#define RCTL(kc) (kc | QK_RCTL)
#define RSFT(kc) (kc | QK_RSFT)
#define RALT(kc) (kc | QK_RALT)
#define RGUI(kc) (kc | QK_RGUI)
#define HYPR(kc) (kc | QK_LCTL | QK_LSFT | QK_LALT | QK_LGUI)
#define MEH(kc) (kc | QK_LCTL | QK_LSFT | QK_LALT)
#define LCAG(kc) (kc | QK_LCTL | QK_LALT | QK_LGUI)
#define MOD_HYPR 0xf
#define MOD_MEH 0x7
// Aliases for shifted symbols
// Each key has a 4-letter code, and some have longer aliases too.
// While the long aliases are descriptive, the 4-letter codes
// make for nicer grid layouts (everything lines up), and are
// the preferred style for Quantum.
#define KC_TILD LSFT(KC_GRV) // ~
#define KC_TILDE KC_TILD
#define KC_EXLM LSFT(KC_1) // !
#define KC_EXCLAIM KC_EXLM
#define KC_AT LSFT(KC_2) // @
#define KC_HASH LSFT(KC_3) // #
#define KC_DLR LSFT(KC_4) // $
#define KC_DOLLAR KC_DLR
#define KC_PERC LSFT(KC_5) // %
#define KC_PERCENT KC_PERC
#define KC_CIRC LSFT(KC_6) // ^
#define KC_CIRCUMFLEX KC_CIRC
#define KC_AMPR LSFT(KC_7) // &
#define KC_AMPERSAND KC_AMPR
#define KC_ASTR LSFT(KC_8) // *
#define KC_ASTERISK KC_ASTR
#define KC_LPRN LSFT(KC_9) // (
#define KC_LEFT_PAREN KC_LPRN
#define KC_RPRN LSFT(KC_0) // )
#define KC_RIGHT_PAREN KC_RPRN
#define KC_UNDS LSFT(KC_MINS) // _
#define KC_UNDERSCORE KC_UNDS
#define KC_PLUS LSFT(KC_EQL) // +
#define KC_LCBR LSFT(KC_LBRC) // {
#define KC_LEFT_CURLY_BRACE KC_LCBR
#define KC_RCBR LSFT(KC_RBRC) // }
#define KC_RIGHT_CURLY_BRACE KC_RCBR
#define KC_LABK LSFT(KC_COMM) // <
#define KC_LEFT_ANGLE_BRACKET KC_LABK
#define KC_RABK LSFT(KC_DOT) // >
#define KC_RIGHT_ANGLE_BRACKET KC_RABK
#define KC_COLN LSFT(KC_SCLN) // :
#define KC_COLON KC_COLN
#define KC_PIPE LSFT(KC_BSLS) // |
#define KC_LT LSFT(KC_COMM) // <
#define KC_GT LSFT(KC_DOT) // >
#define KC_QUES LSFT(KC_SLSH) // ?
#define KC_QUESTION KC_QUES
#define KC_DQT LSFT(KC_QUOT) // "
#define KC_DOUBLE_QUOTE KC_DQT
#define KC_DQUO KC_DQT
#define KC_DELT KC_DELETE // Del key (four letter code)
// Alias for function layers than expand past FN31
#define FUNC(kc) (kc | QK_FUNCTION)
// Aliases
#define S(kc) LSFT(kc)
#define F(kc) FUNC(kc)
#define M(kc) (kc | QK_MACRO)
#define MACRODOWN(...) (record->event.pressed ? MACRO(__VA_ARGS__) : MACRO_NONE)
// L-ayer, T-ap - 256 keycode max, 16 layer max
#define LT(layer, kc) (kc | QK_LAYER_TAP | ((layer & 0xF) << 8))
#define AG_SWAP MAGIC_SWAP_ALT_GUI
#define AG_NORM MAGIC_UNSWAP_ALT_GUI
#define BL_ON BL_9
#define BL_OFF BL_0
#define MI_ON MIDI_ON
#define MI_OFF MIDI_OFF
// GOTO layer - 16 layers max
// when:
// ON_PRESS = 1
// ON_RELEASE = 2
// Unless you have a good reason not to do so, prefer ON_PRESS (1) as your default.
#define TO(layer, when) (layer | QK_TO | (when << 0x4))
// Momentary switch layer - 256 layer max
#define MO(layer) (layer | QK_MOMENTARY)
// Set default layer - 256 layer max
#define DF(layer) (layer | QK_DEF_LAYER)
// Toggle to layer - 256 layer max
#define TG(layer) (layer | QK_TOGGLE_LAYER)
// One-shot layer - 256 layer max
#define OSL(layer) (layer | QK_ONE_SHOT_LAYER)
// One-shot mod
#define OSM(layer) (layer | QK_ONE_SHOT_MOD)
// M-od, T-ap - 256 keycode max
#define MT(mod, kc) (kc | QK_MOD_TAP | ((mod & 0xF) << 8))
#define CTL_T(kc) MT(MOD_LCTL, kc)
#define SFT_T(kc) MT(MOD_LSFT, kc)
#define ALT_T(kc) MT(MOD_LALT, kc)
#define GUI_T(kc) MT(MOD_LGUI, kc)
#define C_S_T(kc) MT((MOD_LCTL | MOD_LSFT), kc) // Control + Shift e.g. for gnome-terminal
#define MEH_T(kc) MT((MOD_LCTL | MOD_LSFT | MOD_LALT), kc) // Meh is a less hyper version of the Hyper key -- doesn't include Win or Cmd, so just alt+shift+ctrl
#define LCAG_T(kc) MT((MOD_LCTL | MOD_LALT | MOD_LGUI), kc) // Left control alt and gui
#define ALL_T(kc) MT((MOD_LCTL | MOD_LSFT | MOD_LALT | MOD_LGUI), kc) // see http://brettterpstra.com/2012/12/08/a-useful-caps-lock-key/
// Dedicated keycode versions for Hyper and Meh, if you want to use them as standalone keys rather than mod-tap
#define KC_HYPR HYPR(KC_NO)
#define KC_MEH MEH(KC_NO)
#ifdef UNICODE_ENABLE
// For sending unicode codes.
// You may not send codes over 7FFF -- this supports most of UTF8.
// To have a key that sends out Œ, go UC(0x0152)
#define UNICODE(n) (n | QK_UNICODE)
#define UC(n) UNICODE(n)
#endif
#endif