Add support for volume mute button on Linux

- Added support for muting volume on Linux
- Implemented mute_volume function in volume.py
- Updated handle_command to also handle "/volume mute" command
- Updated commands.json to use "/volume mute" command instead of "/soundcontrol mute" by default

app/buttons/audio/volume.py

@@ -3,6 +3,10 @@
 import time
 import math
 import ctypes
+import keyboard
+import os
+if not is_linux or os.environ.get("DISPLAY"):
+    import pyautogui
 if is_windows:
     import win32api
     import win32con
@@ -103,6 +107,26 @@ def decrease_volume(delta=1):
         raise NotImplementedError("This command is not implemented for this platform.")
 
 
+def mute_volume():
+    if is_windows:
+        try:
+            keyboard.send("volume mute")
+        except Exception:
+            try:
+                keyboard.send(-173)
+            except Exception:
+                pyautogui.press("volumemute")
+
+    elif is_linux:
+        try:
+            keyboard.send("volume mute")
+        except Exception:
+            keyboard.send(113)
+
+    else:
+        raise NotImplementedError("This command is not implemented for this platform.")
+
+
 def handle_command(message):
     if message.startswith("/volume +"):
         delta = message.replace("/volume +", "").strip()
@@ -116,4 +140,7 @@ def handle_command(message):
 
     elif message.startswith("/volume set"):
         target_volume = int(message.replace("/volume set ", "")) / 100.0
-        set_volume(target_volume)
+        set_volume(target_volume)
+
+    elif message.startswith("/volume mute"):
+        mute_volume()

app/buttons/commands.py

@@ -172,9 +172,6 @@ def handle_command(message=None):
                 log.debug("New volume: %s" % volume.GetMasterVolume())
 
         comtypes.CoUninitialize()
-
-    elif message.startswith("/soundcontrol mute"):
-        pyautogui.press("volumemute")
 
     elif message.startswith("/mediacontrol"):
         audio.media_control(message)
@@ -239,7 +236,7 @@ def handle_command(message=None):
         pyautogui.hotkey("win", "v")
 
     else:
-        if message.startswith("/volume"):
+        if message.startswith(("/volume", "/soundcontrol mute")):
             audio.change_volume(message)
 
         elif message.startswith("/spotify"):

webdeck/commands.json

@@ -381,7 +381,7 @@
           }
         },
         {
-          "command": "/soundcontrol mute",
+          "command": "/volume mute",
           "args": [],
           "style": {
             "image": "volume-mute.svg",