bar/tray: add icon subs

Usage: array of { id, image | icon }

README.md

@@ -331,6 +331,7 @@ default, you must create it manually.
         },
         "tray": {
             "background": false,
+            "iconSubs": [],
             "recolour": false
         },
         "workspaces": {

config/BarConfig.qml

@@ -77,6 +77,7 @@ JsonObject {
     component Tray: JsonObject {
         property bool background: false
         property bool recolour: false
+        property list<var> iconSubs: []
     }
 
     component Status: JsonObject {

modules/bar/components/TrayItem.qml

@@ -3,6 +3,7 @@ pragma ComponentBehavior: Bound
 import qs.components.effects
 import qs.services
 import qs.config
+import qs.utils
 import Quickshell.Services.SystemTray
 import QtQuick
 
@@ -26,14 +27,7 @@ MouseArea {
         id: icon
 
         anchors.fill: parent
-        source: {
+        source: Icons.getTrayIcon(root.modelData.id, root.modelData.icon)
-            let icon = root.modelData.icon;
-            if (icon.includes("?path=")) {
-                const [name, path] = icon.split("?path=");
-                icon = Qt.resolvedUrl(`${path}/${name.slice(name.lastIndexOf("/") + 1)}`);
-            }
-            return icon;
-        }
         colour: Colours.palette.m3secondary
         layer.enabled: Config.bar.tray.recolour
     }

utils/Icons.qml

@@ -1,5 +1,6 @@
 pragma Singleton
 
+import qs.config
 import Quickshell
 import Quickshell.Services.Notifications
 
@@ -205,4 +206,16 @@ Singleton {
             return "monitor_heart";
         return name[0].toUpperCase();
     }
+
+    function getTrayIcon(id: string, icon: string): string {
+        for (const sub of Config.bar.tray.iconSubs)
+            if (sub.id === id)
+                return sub.image ? Qt.resolvedUrl(sub.image) : Quickshell.iconPath(sub.icon);
+
+        if (icon.includes("?path=")) {
+            const [name, path] = icon.split("?path=");
+            icon = Qt.resolvedUrl(`${path}/${name.slice(name.lastIndexOf("/") + 1)}`);
+        }
+        return icon;
+    }
 }