1 files changed, 152 insertions, 0 deletions
diff --git a/keyboards/oddball/oddball.c b/keyboards/oddball/oddball.c
index 5a2ce5ea0e..7ac6d99016 100644
--- a/keyboards/oddball/oddball.c
+++ b/keyboards/oddball/oddball.c
@@ -15,3 +15,155 @@
  */
 
 #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;
+  }
+}