rework project structure for more logical filenames and code separation

mcg/application.py

@@ -0,0 +1,49 @@
+#!/usr/bin/env python3
+
+
+import gi
+gi.require_version('Gtk', '3.0')
+import urllib
+
+from gi.repository import Gio, Gtk, Gdk
+
+from mcg import widgets
+
+
+
+
+class Application(Gtk.Application):
+    TITLE = "MPDCoverGrid (Gtk)"
+    SETTINGS_BASE_KEY = 'de.coderkun.mcg'
+
+
+    def __init__(self):
+        Gtk.Application.__init__(self, application_id="de.coderkun.mcg-dev", flags=Gio.ApplicationFlags.FLAGS_NONE)
+        self._window = None
+
+
+    def do_startup(self):
+        Gtk.Application.do_startup(self)
+        self._settings = Gio.Settings.new(Application.SETTINGS_BASE_KEY)
+        self.load_css()
+
+        # Create builder to load UI
+        self._builder = Gtk.Builder()
+        self._builder.add_from_file('data/gtk.glade')
+
+
+    def do_activate(self):
+        Gtk.Application.do_activate(self)
+        if not self._window:
+            self._window = widgets.Window(self, self._builder, Application.TITLE, self._settings)
+        self._window.present()
+
+
+    def load_css(self):
+        styleProvider = Gtk.CssProvider()
+        styleProvider.load_from_file(Gio.File.new_for_path('data/mcg.css'))
+        Gtk.StyleContext.add_provider_for_screen(
+            Gdk.Screen.get_default(),
+            styleProvider,
+            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION
+        )