Implement a dynamic tray icon status picture

gui.py

@@ -1044,13 +1044,21 @@ class TrayIcon:
     def __init__(self, manager: GUIManager, master: ttk.Widget):
         self._manager = manager
         self.icon: pystray.Icon | None = None
-        self.icon_image = Image_module.open(resource_path("pickaxe.ico"))
+        self._icon_images: dict[str, Image_module.Image] = {
+            "pickaxe": Image_module.open(resource_path("icons/pickaxe.ico")),
+            "active": Image_module.open(resource_path("icons/active.ico")),
+            "idle": Image_module.open(resource_path("icons/idle.ico")),
+            "error": Image_module.open(resource_path("icons/error.ico")),
+            "maint": Image_module.open(resource_path("icons/maint.ico")),
+        }
+        self._icon_state: str = "pickaxe"
         self._button = ttk.Button(master, command=self.minimize, text=_("gui", "tray", "minimize"))
         self._button.grid(column=0, row=0, sticky="ne")
 
     def __del__(self) -> None:
         self.stop()
-        self.icon_image.close()
+        for icon_image in self._icon_images.values():
+            icon_image.close()
 
     def _shorten(self, text: str, by_len: int, min_len: int) -> str:
         if (text_len := len(text)) <= min_len + 3 or by_len <= 0:
@@ -1096,7 +1104,9 @@ class TrayIcon:
             pystray.Menu.SEPARATOR,
             pystray.MenuItem(_("gui", "tray", "quit"), bridge(self.quit)),
         )
-        self.icon = pystray.Icon("twitch_miner", self.icon_image, self.get_title(drop), menu)
+        self.icon = pystray.Icon(
+            "twitch_miner", self._icon_images[self._icon_state], self.get_title(drop), menu
+        )
         # self.icon.run_detached()
         loop.run_in_executor(None, self.icon.run)
 
@@ -1142,6 +1152,13 @@ class TrayIcon:
         if self.icon is not None:
             self.icon.title = self.get_title(drop)
 
+    def change_icon(self, state: str):
+        if state not in self._icon_images:
+            raise ValueError("Invalid icon state")
+        self._icon_state = state
+        if self.icon is not None:
+            self.icon.icon = self._icon_images[state]
+
 
 class Notebook:
     def __init__(self, manager: GUIManager, master: ttk.Widget):
@@ -1937,7 +1954,7 @@ class GUIManager:
         # withdraw immediately to prevent the window from flashing
         self._root.withdraw()
         # root.resizable(False, True)
-        set_root_icon(root, resource_path("pickaxe.ico"))
+        set_root_icon(root, resource_path("icons/pickaxe.ico"))
         root.title(WINDOW_TITLE)  # window title
         root.bind_all("<KeyPress-Escape>", self.unfocus)  # pressing ESC unfocuses selection
         # Image cache for displaying images