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

plugins/thumbnailer/icons/controller.py

@@ -0,0 +1,73 @@
+# Python imports
+import json
+import os
+from os import path
+
+# Lib imports
+import gi
+gi.require_version('Gtk', '3.0')
+from gi.repository import Gtk
+
+# Application imports
+from .icon import Icon
+
+
+
+class IconController(Icon):
+    def __init__(self):
+        CURRENT_PATH = os.path.dirname(os.path.realpath(__file__))
+
+        # NOTE: app_name should be defined using python 'builtins' and so too must be logger used in the various classes
+        app_name_exists   = False
+        try:
+            app_name
+            app_name_exists = True
+        except Exception as e:
+            ...
+
+        APP_CONTEXT            = f"{app_name.lower()}" if app_name_exists else "shellfm"
+        USR_APP_CONTEXT        = f"/usr/share/{APP_CONTEXT}"
+        USER_HOME              = path.expanduser('~')
+        CONFIG_PATH            = f"{USER_HOME}/.config/{APP_CONTEXT}"
+        self.DEFAULT_ICONS     = f"{CONFIG_PATH}/icons"
+        self.DEFAULT_ICON      = f"{self.DEFAULT_ICONS}/text.png"
+        self.FFMPG_THUMBNLR    = f"{CONFIG_PATH}/ffmpegthumbnailer"    # Thumbnail generator binary
+        self.BLENDER_THUMBNLR  = f"{CONFIG_PATH}/blender-thumbnailer"  # Blender thumbnail generator binary
+
+        self.ICON_DIRS         = ["/usr/share/icons", f"{USER_HOME}/.icons" "/usr/share/pixmaps"]
+        self.BASE_THUMBS_PTH   = f"{USER_HOME}/.thumbnails"
+        self.ABS_THUMBS_PTH    = f"{self.BASE_THUMBS_PTH}/normal"
+        self.STEAM_ICONS_PTH   = f"{self.BASE_THUMBS_PTH}/steam_icons"
+
+        if not path.isdir(self.BASE_THUMBS_PTH):
+            os.mkdir(self.BASE_THUMBS_PTH)
+
+        if not path.isdir(self.ABS_THUMBS_PTH):
+            os.mkdir(self.ABS_THUMBS_PTH)
+
+        if not path.isdir(self.STEAM_ICONS_PTH):
+            os.mkdir(self.STEAM_ICONS_PTH)
+
+        if not os.path.exists(self.DEFAULT_ICONS):
+            self.DEFAULT_ICONS = f"{USR_APP_CONTEXT}/icons"
+            self.DEFAULT_ICON  = f"{self.DEFAULT_ICONS}/text.png"
+
+        CONFIG_FILE  = f"{CURRENT_PATH}/../settings.json"
+        with open(CONFIG_FILE) as f:
+            settings      = json.load(f)
+            config        = settings["config"]
+
+            self.container_icon_wh = config["container_icon_wh"]
+            self.video_icon_wh     = config["video_icon_wh"]
+            self.sys_icon_wh       = config["sys_icon_wh"]
+
+            # Filters
+            filters = settings["filters"]
+            self.fmeshs  = tuple(filters["meshs"])
+            self.fcode   = tuple(filters["code"])
+            self.fvideos = tuple(filters["videos"])
+            self.foffice = tuple(filters["office"])
+            self.fimages = tuple(filters["images"])
+            self.ftext   = tuple(filters["text"])
+            self.fmusic  = tuple(filters["music"])
+            self.fpdf    = tuple(filters["pdf"])