add mouse buttons to pointing device

kmk/hid.py

@@ -4,7 +4,7 @@ from micropython import const
 
 from storage import getmount
 
-from kmk.keys import FIRST_KMK_INTERNAL_KEY, ConsumerKey, ModifierKey
+from kmk.keys import FIRST_KMK_INTERNAL_KEY, ConsumerKey, ModifierKey, MouseKey
 from kmk.utils import clamp
 
 try:
@@ -96,6 +96,8 @@ class AbstractHID:
                 self.add_modifier(key)
             elif isinstance(key, ConsumerKey):
                 self.add_cc(key)
+            elif isinstance(key, MouseKey):
+                self.add_pd(key)
             else:
                 self.add_key(key)
                 if key.has_modifiers:
@@ -133,6 +135,7 @@ class AbstractHID:
             self.report_keys[idx] = 0x00
 
         self.remove_cc()
+        self.remove_pd()
 
         return self
 
@@ -202,8 +205,17 @@ class AbstractHID:
     def remove_cc(self):
         # Remove consumer control report.
         if self._cc_report[1]:
+            self._cc_report[1] = 0x00
             self._cc_pending = True
-        self._cc_report[1] = 0x00
+
+    def add_pd(self, key):
+        self._pd_report[1] |= key.code
+        self._pd_pending = True
+
+    def remove_pd(self):
+        if self._pd_report[1]:
+            self._pd_pending = True
+            self._pd_report[1] = 0x00
 
     def move_axis(self, axis):
         if axis.delta != 0 or self._pd_report[axis.code + 2] != 0:

kmk/keys.py

@@ -20,6 +20,7 @@ class KeyType:
     SIMPLE = const(0)
     MODIFIER = const(1)
     CONSUMER = const(2)
+    MOUSE = const(3)
 
 
 FIRST_KMK_INTERNAL_KEY = const(1000)
@@ -697,6 +698,10 @@ class ConsumerKey(Key):
     pass
 
 
+class MouseKey(Key):
+    pass
+
+
 def make_key(
     code: Optional[int] = None,
     names: Tuple[str, ...] = tuple(),  # NOQA
@@ -727,6 +732,8 @@ def make_key(
         constructor = ModifierKey
     elif type == KeyType.CONSUMER:
         constructor = ConsumerKey
+    elif type == KeyType.MOUSE:
+        constructor = MouseKey
     else:
         raise ValueError('Unrecognized key type')
 
@@ -759,6 +766,10 @@ def make_consumer_key(*args, **kwargs) -> Key:
     return make_key(*args, **kwargs, type=KeyType.CONSUMER)
 
 
+def make_mouse_key(*args, **kwargs) -> Key:
+    return make_key(*args, **kwargs, type=KeyType.MOUSE)
+
+
 # Argumented keys are implicitly internal, so auto-gen of code
 # is almost certainly the best plan here
 def make_argumented_key(