header: Add Title and Subtitle widgets

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

ui/header.py

@@ -2,3 +2,24 @@
 from gi.repository import Gtk
 
 Header = Gtk.HeaderBar()
+Box = Gtk.Box.new(Gtk.Orientation.VERTICAL, 0)
+Title    = Gtk.Label()
+Subtitle = Gtk.Label()
+
+Title.add_css_class("title")
+Subtitle.add_css_class("subtitle")
+Box.append(Title)
+Box.append(Subtitle)
+Header.set_title_widget(Box)
+
+
+def set_title(text):
+    Title.set_markup(f"<big>{text}</big>")
+
+def set_subtitle(text):
+    Subtitle.set_markup(f"<big>{text}</big>")
+
+def initialize():
+    set_title("Emmental")
+    set_subtitle("The Cheesy Music Player")
+initialize()

ui/test_header.py

@@ -6,3 +6,22 @@ import unittest
 class TestHeader(unittest.TestCase):
     def test_header_init(self):
         self.assertIsInstance(header.Header, Gtk.HeaderBar)
+        self.assertIsInstance(header.Title,    Gtk.Label)
+        self.assertIsInstance(header.Subtitle, Gtk.Label)
+        self.assertIsInstance(header.Box, Gtk.Box)
+
+    def test_title(self):
+        self.assertEqual(header.Title.get_text(), "Emmental")
+        self.assertTrue(header.Title.has_css_class("title"))
+        self.assertTrue(header.Title in header.Box)
+
+        header.set_title("Test Title")
+        self.assertEqual(header.Title.get_text(), "Test Title")
+
+    def test_subtitle(self):
+        self.assertEqual(header.Subtitle.get_text(), "The Cheesy Music Player")
+        self.assertTrue(header.Subtitle.has_css_class("subtitle"))
+        self.assertTrue(header.Subtitle in header.Box)
+
+        header.set_subtitle("Test Subtitle")
+        self.assertEqual(header.Subtitle.get_text(), "Test Subtitle")

ui/test_window.py

@@ -17,7 +17,6 @@ class TestUIWindow(unittest.TestCase):
 
     def test_window_init(self):
         self.assertIsInstance(window.Window, Gtk.ApplicationWindow)
-
         self.assertEqual(window.Window.get_titlebar(), header.Header)
         window.Window.present()
 

ui/window.py

@@ -16,6 +16,7 @@ initialize()
 
 Window.set_title(version.string())
 Window.set_icon_name("emmental")
+Window.set_titlebar(header.Header)
 Window.set_default_size(settings.get_int("window.width"),
                         settings.get_int("window.height"))
 if settings.get_bool("window.maximized"):
@@ -32,9 +33,3 @@ Window.connect("notify::default-height", on_change_height)
 def on_maximized(window, maximized):
     settings.set("window.maximized", window.is_maximized())
 Window.connect("notify::maximized", on_maximized)
-
-
-#
-# Set up the window's header bar
-#
-Window.set_titlebar(header.Header)