Hid: support mod keys

hidinput.py

@@ -32,9 +32,18 @@ def hid_write(data):
     hiddev.flush()
 
 
-def send_key(hidkey, shift, alt, ctlr, superkey):
-    # TODO handle mod keys
-    hid_write(NULL*2+chr(hidkey)+NULL*5)
+def send_key(hidkey, shift, alt, ctlr, meta):
+    modkey = ord(NULL)
+    if shift:
+        modkey += hidkeycodes['KEY_MOD_LSHIFT']
+    if alt:
+        modkey += hidkeycodes['KEY_MOD_LALT']
+    if ctlr:
+        modkey += hidkeycodes['KEY_MOD_LCTRL']
+    if meta:
+        modkey += hidkeycodes['KEY_MOD_LMETA']
+
+    hid_write(chr(modkey)+NULL+chr(hidkey)+NULL*5)
     hid_write(NULL*8)