Add support for notification sound effects

src/config/settings.py

@@ -56,6 +56,14 @@ class Notifications:
     # keep seeing raw <tags> in notifications.
     use_html: bool = True
 
+    # Default sound to play for notifications. Can be the filename
+    # of a builtin sound (only "default.wav" currently exists), or the
+    # absolute path to an audio file, preferably in the WAV format.
+    default_sound: str = "default.wav"
+
+    # Volume at which the notification sound will be played, 0-100.
+    volume: int = 75
+
     # How long in seconds the window will flash in your dock or taskbar when
     # a new message, which matches a notification push rule with a
     # flash (lightbulb) action, is posted in a room.

src/gui/PythonBridge/EventHandlers.qml

@@ -26,6 +26,11 @@ QtObject {
         if (bubble)
             py.callCoro("desktop_notify", [title, body, image])
 
+        if (sound) {
+            window.mainUI.defaultNotificationSound.seek(0)
+            window.mainUI.defaultNotificationSound.play()
+        }
+
         if (urgencyHint) {
             const msec =
                 critical ?

src/gui/UI.qml

@@ -6,6 +6,7 @@ import QtQuick.Controls 2.12
 import QtQuick.Layouts 1.12
 import QtQuick.Window 2.12
 import QtGraphicalEffects 1.12
+import QtMultimedia 5.12
 import "."
 import "Base"
 import "MainPane"
@@ -35,6 +36,7 @@ Item {
         return ids
     }
 
+    readonly property alias defaultNotificationSound: defaultNotificationSound
     readonly property alias debugConsole: debugConsole
     readonly property alias mainPane: mainPane
     readonly property alias pageLoader: pageLoader
@@ -114,16 +116,27 @@ Item {
         font.pointSize: -1
     }
 
-    DebugConsole {
-        id: debugConsole
-        target: mainUI
-        visible: false
+    Audio {
+        id: defaultNotificationSound
+
+        readonly property string sfx:
+            window.settings.Notifications.default_sound
+
+        audioRole: Audio.NotificationRole
+        volume: window.settings.Notifications.volume / 100
+        source: sfx.trim() === "default.wav" ? "../sounds/default.wav" : sfx
     }
 
     IdleManager {
         id: idleManager
     }
 
+    DebugConsole {
+        id: debugConsole
+        target: mainUI
+        visible: false
+    }
+
     LinearGradient {
         id: mainUIGradient
         visible: ! image.visible