Added debugger class for dashboard and other launcher util classes.

ptlinux/desktop_identity.py

@@ -0,0 +1,59 @@
+"""Stable desktop identity shared by the launcher and Wine game window."""
+
+from __future__ import annotations
+
+import os
+from pathlib import Path
+from typing import Mapping
+
+
+APPLICATION_NAME = "PristonTale EU"
+APPLICATION_WM_CLASS = "PristonTaleEU"
+APPLICATION_WM_INSTANCE = "pristontale-eu"
+APPLICATION_ICON_FILENAME = "eu.pristontale.PTLinux.png"
+APPLICATION_ICON_VARIABLE = "PTLINUX_ICON_PATH"
+
+
+def find_application_icon(
+	environment: Mapping[str, str] | None = None,
+) -> Path | None:
+	"""Find the installed icon, with source-tree fallbacks for development."""
+
+	env = os.environ if environment is None else environment
+	candidates: list[Path] = []
+	explicit = env.get(APPLICATION_ICON_VARIABLE)
+	if explicit:
+		candidates.append(Path(explicit).expanduser())
+
+	# Some distributions bundle the icon beside this module. The installer
+	# publishes the same asset through the user's XDG data directory.
+	candidates.append(Path(__file__).with_name(APPLICATION_ICON_FILENAME))
+	home_value = env.get("HOME")
+	if home_value:
+		home = Path(home_value).expanduser()
+		data_home_value = env.get("XDG_DATA_HOME")
+		data_home = (
+			Path(data_home_value).expanduser()
+			if data_home_value
+			else home / ".local/share"
+		)
+		candidates.append(data_home / "pixmaps" / APPLICATION_ICON_FILENAME)
+		default_icon = home / ".local/share/pixmaps" / APPLICATION_ICON_FILENAME
+		if default_icon not in candidates:
+			candidates.append(default_icon)
+
+	# The source checkout keeps installer assets under packaging/.
+	candidates.append(
+		Path(__file__).resolve().parent.parent
+		/ "packaging"
+		/ APPLICATION_ICON_FILENAME
+	)
+	seen: set[Path] = set()
+	for candidate in candidates:
+		resolved = candidate.resolve(strict=False)
+		if resolved in seen:
+			continue
+		seen.add(resolved)
+		if resolved.is_file():
+			return resolved
+	return None