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/* Copyright 2021 HorrorTroll <https://github.com/HorrorTroll>
* Copyright 2021 Gopolar
*
* 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/>.
*/
extern const unsigned char font[] PROGMEM;
#define ROW_1 OLED_DISPLAY_WIDTH
#define ROW_2 (OLED_DISPLAY_WIDTH * 2)
static uint32_t wave_sleep = 0;
#define FRAME_TIMEOUT (1000/28)
static uint16_t wave_timer = 0;
static uint8_t next_bar_val = 0;
static uint8_t next_log_byte[OLED_FONT_WIDTH] = {0};
static uint8_t line1[OLED_DISPLAY_WIDTH] = {0};
static uint8_t line2[OLED_DISPLAY_WIDTH] = {0};
static const uint8_t PROGMEM bar_lut[8] = {0, 16, 24, 56, 60, 124, 126, 255};
#define BAR_KEY_WEIGHT 128
#define BAR_KEY_DECAY_MAX 18
static uint8_t bar_key_decay = BAR_KEY_DECAY_MAX;
// clang-format off
static const char PROGMEM code_to_name[0xFF] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
' ', ' ', ' ', ' ', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', // 0x
'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '1', '2', // 1x
'3', '4', '5', '6', '7', '8', '9', '0', 128, 136, 132, 131, 22, '-', '=', '[', // 2x
']','\\', '#', ';','\'', '`', ',', '.', '/', 130, 7, 7, 7, 7, 7, 7, // 3x
7, 7, 7, 7, 7, 7, 137, 138, 139, 140, 141, 30, 143, 142, 31, 26, // 4x
27, 25, 24, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 5x
' ', ' ', ' ', ' ','\\', 135, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 6x
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 7x
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 8x
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // 9x
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // Ax
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // Bx
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // Cx
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // Dx
15, 129, 133, 4, 15, 129, 133, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', // Ex
' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' // Fx
};
// clang-format on
void add_keylog(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 < (sizeof(code_to_name) / sizeof(char))) {
char log_char = pgm_read_byte(&code_to_name[keycode]);
for (uint8_t j = 0; j < OLED_FONT_WIDTH; j++) {
const uint8_t glyph_line = pgm_read_byte(&font[log_char * OLED_FONT_WIDTH + j]);
next_log_byte[j] = glyph_line;
}
}
}
bool process_record_user_oled(uint16_t keycode, keyrecord_t *record) {
if (record->event.pressed) {
wave_sleep = timer_read32();
add_keylog(keycode);
uint8_t t = next_bar_val + BAR_KEY_WEIGHT;
if (t < next_bar_val) {
next_bar_val = 255;
} else {
next_bar_val = t;
}
bar_key_decay = BAR_KEY_DECAY_MAX;
}
return true;
}
void render_frame(void) {
// rotate line 1, and stick in the next byte of the next char,
// then rotate the next char buffer
memmove(line1+1, line1, OLED_DISPLAY_WIDTH - 1);
line1[0] = next_log_byte[OLED_FONT_WIDTH - 1];
memmove(next_log_byte+1, next_log_byte, OLED_FONT_WIDTH - 1);
next_log_byte[0] = 0;
// rotate line 2, sticking in the next display value
uint8_t disp_val = pgm_read_byte(&bar_lut[next_bar_val / 32]);
memmove(line2+1, line2, OLED_DISPLAY_WIDTH - 1);
line2[0] = disp_val;
// draw both bars
for (uint8_t i = 0; i < OLED_DISPLAY_WIDTH; i++) {
oled_write_raw_byte(line1[i], ROW_1 + i);
oled_write_raw_byte(line2[i], ROW_2 + i);
}
// decay the next bar value
if (next_bar_val > bar_key_decay) {
next_bar_val -= bar_key_decay;
} else {
next_bar_val = 0;
}
if (bar_key_decay > 1) {
bar_key_decay -= 1;
}
}
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