Add option for auto mouse movement threshold (#21398)

Fixes #21396

2 files changed, 21 insertions, 4 deletions

diff --git a/quantum/pointing_device/pointing_device_auto_mouse.c b/quantum/pointing_device/pointing_device_auto_mouse.c
index 3135b9e531..1b11fffedb 100644
--- a/quantum/pointing_device/pointing_device_auto_mouse.c
+++ b/quantum/pointing_device/pointing_device_auto_mouse.c
@@ -17,6 +17,7 @@
 
 #ifdef POINTING_DEVICE_AUTO_MOUSE_ENABLE
 
+#    include <stdlib.h>
 #    include <string.h>
 #    include "pointing_device_auto_mouse.h"
 #    include "debug.h"
@@ -217,7 +218,11 @@ void auto_mouse_layer_off(void) {
  * @return bool of pointing_device activation
  */
 __attribute__((weak)) bool auto_mouse_activation(report_mouse_t mouse_report) {
-    return mouse_report.x != 0 || mouse_report.y != 0 || mouse_report.h != 0 || mouse_report.v != 0 || mouse_report.buttons;
+    auto_mouse_context.total_mouse_movement.x += mouse_report.x;
+    auto_mouse_context.total_mouse_movement.y += mouse_report.y;
+    auto_mouse_context.total_mouse_movement.h += mouse_report.h;
+    auto_mouse_context.total_mouse_movement.v += mouse_report.v;
+    return abs(auto_mouse_context.total_mouse_movement.x) > AUTO_MOUSE_THRESHOLD || abs(auto_mouse_context.total_mouse_movement.y) > AUTO_MOUSE_THRESHOLD || abs(auto_mouse_context.total_mouse_movement.h) > AUTO_MOUSE_THRESHOLD || abs(auto_mouse_context.total_mouse_movement.v) > AUTO_MOUSE_THRESHOLD || mouse_report.buttons;
 }
 
 /**
@@ -235,14 +240,16 @@ void pointing_device_task_auto_mouse(report_mouse_t mouse_report) {
     // update activation and reset debounce
     auto_mouse_context.status.is_activated = auto_mouse_activation(mouse_report);
     if (is_auto_mouse_active()) {
-        auto_mouse_context.timer.active = timer_read();
-        auto_mouse_context.timer.delay  = 0;
+        auto_mouse_context.total_mouse_movement = (total_mouse_movement_t){.x = 0, .y = 0, .h = 0, .v = 0};
+        auto_mouse_context.timer.active         = timer_read();
+        auto_mouse_context.timer.delay          = 0;
         if (!layer_state_is((AUTO_MOUSE_TARGET_LAYER))) {
             layer_on((AUTO_MOUSE_TARGET_LAYER));
         }
     } else if (layer_state_is((AUTO_MOUSE_TARGET_LAYER)) && timer_elapsed(auto_mouse_context.timer.active) > auto_mouse_context.config.timeout) {
         layer_off((AUTO_MOUSE_TARGET_LAYER));
-        auto_mouse_context.timer.active = 0;
+        auto_mouse_context.timer.active         = 0;
+        auto_mouse_context.total_mouse_movement = (total_mouse_movement_t){.x = 0, .y = 0, .h = 0, .v = 0};
     }
 }
 
diff --git a/quantum/pointing_device/pointing_device_auto_mouse.h b/quantum/pointing_device/pointing_device_auto_mouse.h
index 1343855e00..904f18b68e 100644
--- a/quantum/pointing_device/pointing_device_auto_mouse.h
+++ b/quantum/pointing_device/pointing_device_auto_mouse.h
@@ -42,9 +42,18 @@
 #ifndef AUTO_MOUSE_DEBOUNCE
 #    define AUTO_MOUSE_DEBOUNCE 25
 #endif
+#ifndef AUTO_MOUSE_THRESHOLD
+#    define AUTO_MOUSE_THRESHOLD 10
+#endif
 
 /* data structure */
 typedef struct {
+    mouse_xy_report_t x;
+    mouse_xy_report_t y;
+    int8_t            v;
+    int8_t            h;
+} total_mouse_movement_t;
+typedef struct {
     struct {
         bool     is_enabled;
         uint8_t  layer;
@@ -60,6 +69,7 @@ typedef struct {
         bool   is_toggled;
         int8_t mouse_key_tracker;
     } status;
+    total_mouse_movement_t total_mouse_movement;
 } auto_mouse_context_t;
 
 /* ----------Set up and control------------------------------------------------------------------------------ */