Fixing AppImage button icon paths

Author: jonoomph

src/themes/base.py

@@ -33,6 +33,7 @@
 from PyQt5.QtWidgets import QTabWidget, QWidget, QSizePolicy
 
 from classes import ui_util
+from classes.info import PATH
 from themes.manager import ThemeManager
 
 
@@ -109,6 +110,13 @@ def set_toolbar_buttons(self, toolbar, icon_size=24, settings=None):
             expand = setting.get("expand", False)
             divide = setting.get("divide", False)
 
+            # Update button_icon to abs path (if not found)
+            # This is needed for AppImage, where the relative path is wrong
+            if button_icon and not button_icon.startswith(":") and not os.path.exists(button_icon):
+                new_abs_path = os.path.join(PATH, button_icon)
+                if os.path.exists(new_abs_path):
+                    button_icon = new_abs_path
+
             if expand:
                 # Add spacer and 'New Version Available' toolbar button (default hidden)
                 spacer = QWidget(toolbar)