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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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