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/*
* Copyright 2020 Richard Sutherland (rich@brickbots.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 "wpm.h"
#include <math.h>
// WPM Stuff
static uint8_t current_wpm = 0;
static uint16_t wpm_timer = 0;
// This smoothing is 40 keystrokes
static const float wpm_smoothing = WPM_SMOOTHING;
void set_current_wpm(uint8_t new_wpm) { current_wpm = new_wpm; }
uint8_t get_current_wpm(void) { return current_wpm; }
bool wpm_keycode(uint16_t keycode) { return wpm_keycode_kb(keycode); }
__attribute__((weak)) bool wpm_keycode_kb(uint16_t keycode) { return wpm_keycode_user(keycode); }
__attribute__((weak)) bool wpm_keycode_user(uint16_t keycode) {
if ((keycode >= QK_MOD_TAP && keycode <= QK_MOD_TAP_MAX) || (keycode >= QK_LAYER_TAP && keycode <= QK_LAYER_TAP_MAX) || (keycode >= QK_MODS && keycode <= QK_MODS_MAX)) {
keycode = keycode & 0xFF;
} else if (keycode > 0xFF) {
keycode = 0;
}
if ((keycode >= KC_A && keycode <= KC_0) || (keycode >= KC_TAB && keycode <= KC_SLASH)) {
return true;
}
return false;
}
#ifdef WPM_ALLOW_COUNT_REGRESSION
__attribute__((weak)) uint8_t wpm_regress_count(uint16_t keycode) {
bool weak_modded = (keycode >= QK_LCTL && keycode < QK_LSFT) || (keycode >= QK_RCTL && keycode < QK_RSFT);
if ((keycode >= QK_MOD_TAP && keycode <= QK_MOD_TAP_MAX) || (keycode >= QK_LAYER_TAP && keycode <= QK_LAYER_TAP_MAX) || (keycode >= QK_MODS && keycode <= QK_MODS_MAX)) {
keycode = keycode & 0xFF;
} else if (keycode > 0xFF) {
keycode = 0;
}
if (keycode == KC_DEL || keycode == KC_BSPC) {
if (((get_mods() | get_oneshot_mods()) & MOD_MASK_CTRL) || weak_modded) {
return WPM_ESTIMATED_WORD_SIZE;
} else {
return 1;
}
} else {
return 0;
}
}
#endif
void update_wpm(uint16_t keycode) {
if (wpm_keycode(keycode)) {
if (wpm_timer > 0) {
uint16_t latest_wpm = 60000 / timer_elapsed(wpm_timer) / WPM_ESTIMATED_WORD_SIZE;
if (latest_wpm > UINT8_MAX) {
latest_wpm = UINT8_MAX;
}
current_wpm += ceilf((latest_wpm - current_wpm) * wpm_smoothing);
}
wpm_timer = timer_read();
}
#ifdef WPM_ALLOW_COUNT_REGRESSION
uint8_t regress = wpm_regress_count(keycode);
if (regress) {
if (current_wpm < regress) {
current_wpm = 0;
} else {
current_wpm -= regress;
}
wpm_timer = timer_read();
}
#endif
}
void decay_wpm(void) {
if (timer_elapsed(wpm_timer) > 1000) {
current_wpm += (-current_wpm) * wpm_smoothing;
wpm_timer = timer_read();
}
}
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