gui: move most of the tuhi-gui startup script to application.py

Add a new main() there so we have a single entry point for the gui instead of
a complex script that needs to be called. That start up script should really
just be the minimum bits possible.

It's still not perfect because we won't work without the gresources and they
require that the pkgdatadir is set. But at least it moves all the logic out of
the startup script.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

tuhi-gui.in

@@ -13,8 +13,7 @@ except ValueError as e:
     sys.exit(1)
 
 gi.require_version('Gio', '2.0')  # NOQA
-gi.require_version('Gtk', '3.0')  # NOQA
-from gi.repository import Gio, Gtk, Gdk
+from gi.repository import Gio
 
 
 @devel@  # NOQA
@@ -22,61 +21,12 @@ resource = Gio.resource_load(os.fspath(Path('@pkgdatadir@', 'tuhi.gresource')))
 Gio.Resource._register(resource)
 
 
-def install_excepthook():
-    old_hook = sys.excepthook
-
-    def new_hook(etype, evalue, etb):
-        old_hook(etype, evalue, etb)
-        while Gtk.main_level():
-            Gtk.main_quit()
-        sys.exit()
-    sys.excepthook = new_hook
-
-
-def gtk_style():
-    css = b"""
-    flowboxchild:selected {
-      background-color: white;
-    }
-    .bg-white {
-      background-color: white;
-    }
-    .bg-paper {
-      border-radius: 5px;
-      background-color: #ebe9e8;
-    }
-    .drawing {
-      background-color: white;
-      border-radius: 5px;
-    }
-    """
-
-    screen = Gdk.Screen.get_default()
-    if screen is None:
-        print('Error: Unable to connect to screen. Make sure DISPLAY or WAYLAND_DISPLAY are set', file=sys.stderr)
-        sys.exit(1)
-    style_provider = Gtk.CssProvider()
-    style_provider.load_from_data(css)
-    Gtk.StyleContext.add_provider_for_screen(
-            screen,
-            style_provider,
-            Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION
-            )
-
-
 if __name__ == "__main__":
     import gettext
     import locale
-    import signal
-    from tuhi.gui.application import Application
-
-    install_excepthook()
-    gtk_style()
 
     locale.bindtextdomain('tuhi', '@localedir@')
-    locale.textdomain('tuhi')
     gettext.bindtextdomain('tuhi', '@localedir@')
-    gettext.textdomain('tuhi')
-    signal.signal(signal.SIGINT, signal.SIG_DFL)
-    exit_status = Application().run(sys.argv)
-    sys.exit(exit_status)
+
+    from tuhi.gui.application import main
+    main(sys.argv)

tuhi/gui/application.py

@@ -11,18 +11,17 @@
 #  GNU General Public License for more details.
 #
 
-from gi.repository import Gio, GLib, Gtk
-import logging
-
 from .window import MainWindow
 from .config import Config
-import xdg.BaseDirectory
 from pathlib import Path
 
+import logging
+import sys
+import xdg.BaseDirectory
 import gi
 gi.require_version("Gio", "2.0")
 gi.require_version("Gtk", "3.0")
-
+from gi.repository import Gio, GLib, Gtk, Gdk  # NOQA
 
 logging.basicConfig(format='%(asctime)s %(levelname)s: %(name)s: %(message)s',
                     level=logging.INFO,
@@ -105,3 +104,58 @@ class Application(Gtk.Application):
     def _help(self, action, param):
         import time
         Gtk.show_uri(None, 'https://github.com/tuhiproject/tuhi/wiki', time.time())
+
+
+def install_excepthook():
+    old_hook = sys.excepthook
+
+    def new_hook(etype, evalue, etb):
+        old_hook(etype, evalue, etb)
+        while Gtk.main_level():
+            Gtk.main_quit()
+        sys.exit()
+    sys.excepthook = new_hook
+
+
+def gtk_style():
+    css = b"""
+    flowboxchild:selected {
+      background-color: white;
+    }
+    .bg-white {
+      background-color: white;
+    }
+    .bg-paper {
+      border-radius: 5px;
+      background-color: #ebe9e8;
+    }
+    .drawing {
+      background-color: white;
+      border-radius: 5px;
+    }
+    """
+
+    screen = Gdk.Screen.get_default()
+    if screen is None:
+        print('Error: Unable to connect to screen. Make sure DISPLAY or WAYLAND_DISPLAY are set', file=sys.stderr)
+        sys.exit(1)
+    style_provider = Gtk.CssProvider()
+    style_provider.load_from_data(css)
+    Gtk.StyleContext.add_provider_for_screen(screen,
+                                             style_provider,
+                                             Gtk.STYLE_PROVIDER_PRIORITY_APPLICATION)
+
+
+def main(argv):
+    import gettext
+    import locale
+    import signal
+
+    install_excepthook()
+    gtk_style()
+
+    locale.textdomain('tuhi')
+    gettext.textdomain('tuhi')
+    signal.signal(signal.SIGINT, signal.SIG_DFL)
+    exit_status = Application().run(argv)
+    sys.exit(exit_status)