moved thumbnail generation to plugin; extended plugin loading for pre and post window loading

plugins/thumbnailer/icons/mixins/desktopiconmixin.py

@@ -0,0 +1,76 @@
+# Python imports
+import os
+from os.path import isfile
+import subprocess
+import hashlib
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+from gi.repository import Gio
+
+# Application imports
+from .xdg.DesktopEntry import DesktopEntry
+
+
+
+
+class DesktopIconMixin:
+    def find_thumbnail_from_desktop_file(self, full_path):
+        try:
+            xdgObj        = DesktopEntry(full_path)
+            icon          = xdgObj.getIcon()
+            alt_icon_path = ""
+
+            if "steam" in icon:
+                return self.get_steam_img(xdgObj)
+            elif os.path.exists(icon):
+                return self.create_scaled_image(icon, self.sys_icon_wh)
+            else:
+                pixbuf, alt_icon_path = self.get_icon_from_traversal(icon)
+                if pixbuf:
+                    return pixbuf
+
+                return self.create_scaled_image(alt_icon_path, self.sys_icon_wh)
+        except Exception as e:
+            print(".desktop icon generation issue:")
+            print( repr(e) )
+
+        return None
+
+
+    def get_steam_img(self, xdgObj):
+        name         = xdgObj.getName()
+        file_hash    = hashlib.sha256(str.encode(name)).hexdigest()
+        hash_img_pth = f"{self.STEAM_ICONS_PTH}/{file_hash}.jpg"
+
+        if not isfile(hash_img_pth):
+            exec_str  = xdgObj.getExec()
+            parts     = exec_str.split("steam://rungameid/")
+            id        = parts[len(parts) - 1]
+            imageLink = f"{self.STEAM_CDN_URL}{id}/header.jpg"
+            proc      = subprocess.Popen(["wget", "-O", hash_img_pth, imageLink])
+            proc.wait()
+
+        return self.create_scaled_image(hash_img_pth, self.video_icon_wh)
+
+    def get_icon_from_traversal(self, icon):
+        gio_icon = Gio.Icon.new_for_string(icon)
+        gicon    = Gtk.Image.new_from_gicon(gio_icon, 32)
+        pixbuf   = gicon.get_pixbuf()
+
+        alt_icon_path = ""
+        for dir in self.ICON_DIRS:
+            alt_icon_path = self.traverse_icons_folder(dir, icon)
+            if alt_icon_path != "":
+                break
+
+        return pixbuf, alt_icon_path
+
+    def traverse_icons_folder(self, path, icon):
+        for (dirpath, dirnames, filenames) in os.walk(path):
+            for file in filenames:
+                appNM = "application-x-" + icon
+                if icon in file or appNM in file:
+                    return f"{dirpath}/{file}"