pulser: Add a progress bar to the UI window

The intention is to pulse it whenever a background thread is running. I
also add a horizontal separator to show that this is a separate area

Signed-off-by: Anna Schumaker <Anna@NoWheyCreamery.com>

ui/pulser.py

@@ -0,0 +1,8 @@
+# Copyright 2021 (c) Anna Schumaker.
+from gi.repository import Gtk
+
+Bar = Gtk.ProgressBar()
+
+Bar.set_valign(Gtk.Align.CENTER)
+Bar.set_margin_start(10)
+Bar.set_margin_end(10)

ui/test_pulser.py

@@ -0,0 +1,12 @@
+# Copyright 2021 (c) Anna Schumaker.
+from . import pulser
+from gi.repository import Gtk
+import unittest
+
+class TestUIPulser(unittest.TestCase):
+    def test_pulser_init(self):
+        self.assertIsInstance(pulser.Bar, Gtk.ProgressBar)
+
+        self.assertEqual(pulser.Bar.get_valign(), Gtk.Align.CENTER)
+        self.assertEqual(pulser.Bar.get_margin_start(), 10)
+        self.assertEqual(pulser.Bar.get_margin_end(), 10)

ui/test_window.py

@@ -4,6 +4,7 @@ from lib import version
 from . import window
 from . import header
 from . import pane
+from . import pulser
 from gi.repository import Gtk
 import unittest
 
@@ -19,10 +20,15 @@ class TestUIWindow(unittest.TestCase):
     def test_window_init(self):
         self.assertIsInstance(window.Window, Gtk.ApplicationWindow)
         self.assertIsInstance(window.Grid, Gtk.Grid)
+        self.assertIsInstance(window.Sep, Gtk.Separator)
+
+        self.assertTrue(window.Grid.get_column_homogeneous())
+        self.assertIn(pane.Pane, window.Grid)
+        self.assertIn(pulser.Bar, window.Grid)
+        self.assertIn(window.Sep, window.Grid)
 
         self.assertEqual(window.Window.get_titlebar(), header.Header)
         self.assertEqual(window.Window.get_child(), window.Grid)
-        self.assertIn(pane.Pane, window.Grid)
         window.Window.present()
 
         self.assertEqual(window.Window.get_title(), version.string())

ui/window.py

@@ -6,9 +6,11 @@ gi.require_version("Gtk", "4.0")
 from gi.repository import Gtk
 from . import header
 from . import pane
+from . import pulser
 
 Window = Gtk.ApplicationWindow()
 Grid = Gtk.Grid()
+Sep = Gtk.Separator.new(Gtk.Orientation.HORIZONTAL)
 
 def initialize():
     settings.initialize("window.width", 1100)
@@ -16,7 +18,10 @@ def initialize():
     settings.initialize("window.maximized", False)
 initialize()
 
-Grid.attach(pane.Pane, 0, 0, 4, 1)
+Grid.set_column_homogeneous(True)
+Grid.attach(pane.Pane,  0, 0, 4, 1)
+Grid.attach(Sep,        0, 1, 4, 1)
+Grid.attach(pulser.Bar, 0, 2, 1, 1)
 
 Window.set_title(version.string())
 Window.set_icon_name("emmental")