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/* Copyright 2021 Chris Tanaka <https://github.com/christanaka>
*
* 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 "bongo_graphics.h"
#include QMK_KEYBOARD_H
#define _IDLE_FRAMES 5
#define _PREP_FRAMES 1
#define _TAP_FRAMES 2
#define _ANIM_BYTES 512 // Number of bytes in array (max is 1024)
#define _IDLE_FRAME_DURATION 175
#define _TAP_FRAME_DURATION 75
#define _PREP_TIMEOUT 750
enum anim_states
{
Idle,
Prep,
Tap
};
static uint8_t anim_state = Idle;
static uint8_t anim_duration = _IDLE_FRAME_DURATION;
static uint32_t anim_timer = 0;
static uint8_t idle_frame = 0;
static uint8_t tap_frame = 0;
static uint32_t prep_timer = 0;
// Decompress and write a precompressed bitmap frame to the OLED.
// Documentation and python compression script available at:
// https://github.com/nullbitsco/squeez-o
#ifdef USE_OLED_BITMAP_COMPRESSION
static void oled_write_compressed_P(const char* input_block_map, const char* input_block_list) {
uint16_t block_index = 0;
for (uint16_t i = 0; i < NUM_OLED_BYTES; i++) {
uint8_t bit = i % 8;
uint8_t map_index = i / 8;
uint8_t _block_map = (uint8_t)pgm_read_byte_near(input_block_map + map_index);
uint8_t nonzero_byte = (_block_map & (1 << bit));
if (nonzero_byte) {
const char data = (const char)pgm_read_byte_near(input_block_list + block_index++);
oled_write_raw_byte(data, i);
} else {
const char data = (const char)0x00;
oled_write_raw_byte(data, i);
}
}
}
#endif
static void animate(uint8_t x, uint8_t y) {
oled_set_cursor(x, y);
// Update frame
switch (anim_state) {
case Idle:
idle_frame = (idle_frame + 1) % _IDLE_FRAMES;
#ifdef USE_OLED_BITMAP_COMPRESSION
oled_write_compressed_P(idle_block_map[abs(1 - idle_frame)], idle[abs(1 - idle_frame)]);
#else
oled_write_raw_P(idle[abs(1 - idle_frame)], sizeof(idle[abs(1 - idle_frame)]));
#endif
break;
case Prep:
#ifdef USE_OLED_BITMAP_COMPRESSION
oled_write_compressed_P(prep_block_map[0], prep[0]);
#else
oled_write_raw_P(prep[0], sizeof(prep[0]));
#endif
break;
case Tap:
tap_frame = (tap_frame + 1) % _TAP_FRAMES;
#ifdef USE_OLED_BITMAP_COMPRESSION
oled_write_compressed_P(tap_block_map[abs(1 - tap_frame)], tap[abs(1 - tap_frame)]);
#else
oled_write_raw_P(tap[abs(1 - tap_frame)], sizeof(tap[abs(1 - tap_frame)]));
#endif
break;
default:
break;
}
}
void bongo_render(uint8_t x, uint8_t y) {
if (timer_elapsed32(anim_timer) > anim_duration) {
anim_timer = timer_read32();
animate(x, y);
}
if (anim_state == Prep && timer_elapsed32(prep_timer) > _PREP_TIMEOUT) {
anim_state = Idle;
anim_duration = _IDLE_FRAME_DURATION;
}
}
void bongo_process_record(keyrecord_t *record) {
if (record->event.pressed) {
anim_state = Tap;
anim_duration = _TAP_FRAME_DURATION;
} else {
if (anim_state == Tap) {
anim_state = Prep;
prep_timer = timer_read32();
}
}
}
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