Add configurable mouse movement and improve HID handling

settings.py

@@ -14,9 +14,12 @@ DEFAULTS = {
     "wifi_ssid": "CHANGE_ME",
     "wifi_password": "CHANGE_ME",
     "web_password": "change-this-before-deploying",
+    # Set false when validating on a board without the T-Dongle-S3 display.
+    "display_enabled": False,
     "enabled": True,
     "return_enabled": True,
     "mouse_enabled": True,
+    "mouse_distance": 1,
     "return_min_seconds": 45,
     "return_max_seconds": 120,
     "mouse_min_seconds": 20,
@@ -65,7 +68,7 @@ def apply_form(values, form):
 
     for key in (
         "return_min_seconds", "return_max_seconds",
-        "mouse_min_seconds", "mouse_max_seconds",
+        "mouse_min_seconds", "mouse_max_seconds", "mouse_distance",
     ):
         if key in form:
             try:
@@ -81,6 +84,10 @@ def _validate(values):
         if not isinstance(values.get(key), str) or not values[key]:
             raise ValueError("%s must be a non-empty string" % key)
 
+    distance = values["mouse_distance"]
+    if not isinstance(distance, int) or distance < 1 or distance > 127:
+        raise ValueError("mouse distance must be between 1 and 127 pixels")
+
     for prefix in ("return", "mouse"):
         minimum = values[prefix + "_min_seconds"]
         maximum = values[prefix + "_max_seconds"]