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- /* Copyright 2020 Alexander Tulloh
- *
- * 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 "oddball.h"
- #include "pointing_device.h"
- #include "optical_sensor/optical_sensor.h"
-
- #define CLAMP_HID(value) value < -127 ? -127 : value > 127 ? 127 : value
-
- static bool scroll_pressed;
- static bool mouse_buttons_dirty;
- static int8_t scroll_h;
- static int8_t scroll_v;
-
- void pointing_device_init(void){
- if(!is_keyboard_master())
- return;
-
- optical_sensor_init();
-
- // read config from EEPROM and update if needed
-
- config_oddball_t kb_config;
- kb_config.raw = eeconfig_read_kb();
-
- if(!kb_config.cpi) {
- kb_config.cpi = CPI_2;
- eeconfig_update_kb(kb_config.raw);
- }
-
- optical_sensor_set_config((config_optical_sensor_t){ kb_config.cpi });
- }
-
- void pointing_device_task(void){
- if(!is_keyboard_master())
- return;
-
- report_mouse_t mouse_report = pointing_device_get_report();
- report_optical_sensor_t sensor_report = optical_sensor_get_report();
-
- int8_t clamped_x = CLAMP_HID(sensor_report.x);
- int8_t clamped_y = CLAMP_HID(sensor_report.y);
-
- if(scroll_pressed) {
-
- // accumulate scroll
- scroll_h += clamped_x;
- scroll_v += clamped_y;
-
- int8_t scaled_scroll_h = scroll_h / SCROLL_DIVIDER;
- int8_t scaled_scroll_v = scroll_v / SCROLL_DIVIDER;
-
- // clear accumulated scroll on assignment
-
- if(scaled_scroll_h != 0){
- mouse_report.h = -scaled_scroll_h;
- scroll_h = 0;
- }
-
- if(scaled_scroll_v != 0){
- mouse_report.v = -scaled_scroll_v;
- scroll_v = 0;
- }
- }
- else {
- mouse_report.x = -clamped_x;
- mouse_report.y = clamped_y;
- }
-
- pointing_device_set_report(mouse_report);
-
- // only send report on change as even sending report with no change is treated as movement
- if(mouse_buttons_dirty ||
- mouse_report.x != 0 ||
- mouse_report.y != 0 ||
- mouse_report.h != 0 ||
- mouse_report.v != 0){
-
- mouse_buttons_dirty = false;
- pointing_device_send();
- }
- }
-
- static void on_cpi_button(uint16_t cpi, keyrecord_t *record) {
-
- if(!record->event.pressed)
- return;
-
- optical_sensor_set_config((config_optical_sensor_t){ cpi });
-
- config_oddball_t kb_config;
- kb_config.cpi = cpi;
- eeconfig_update_kb(kb_config.raw);
- }
-
- static void on_mouse_button(uint8_t mouse_button, keyrecord_t *record) {
-
- report_mouse_t report = pointing_device_get_report();
-
- if(record->event.pressed)
- report.buttons |= mouse_button;
- else
- report.buttons &= ~mouse_button;
-
- pointing_device_set_report(report);
- mouse_buttons_dirty = true;
- }
-
- bool process_record_kb(uint16_t keycode, keyrecord_t *record) {
-
- if(!process_record_user(keycode, record))
- return false;
-
- // handle mouse drag and scroll
-
- switch (keycode) {
- case KC_BTN1:
- on_mouse_button(MOUSE_BTN1, record);
- return false;
-
- case KC_BTN2:
- on_mouse_button(MOUSE_BTN2, record);
- return false;
-
- case KC_BTN3:
- on_mouse_button(MOUSE_BTN3, record);
- return false;
-
- case KC_BTN4:
- on_mouse_button(MOUSE_BTN4, record);
- return false;
-
- case KC_BTN5:
- on_mouse_button(MOUSE_BTN5, record);
- return false;
-
- case KC_SCROLL:
- scroll_pressed = record->event.pressed;
- return false;
-
- case KC_CPI_1:
- on_cpi_button(CPI_1, record);
- return false;
-
- case KC_CPI_2:
- on_cpi_button(CPI_2, record);
- return false;
-
- case KC_CPI_3:
- on_cpi_button(CPI_3, record);
- return false;
-
- default:
- return true;
- }
- }
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