[gnome-initial-setup/8-nicer-final-page] Adjust page title fonts

[Will Thompson <wjt src gnome org>]

commit 76b983c655e6620703e79d6c0e48a1f62bdb26f9
Author: Will Thompson <will willthompson co uk>
Date:   Mon Jan 20 21:18:36 2020 +0000

    Adjust page title fonts
    
    As [suggested by Jakub Steiner][0], the final page uses a larger,
    lighter style, and other pages' titles use a heavier, smaller style.
    
    [0]: https://gitlab.gnome.org/GNOME/gnome-initial-setup/merge_requests/70#note_690706

 gnome-initial-setup/gis-assistant.gresource.xml         |  1 +
 gnome-initial-setup/gis-page-header.c                   |  6 ++++++
 gnome-initial-setup/gis-page-header.css                 | 13 +++++++++++++
 gnome-initial-setup/gis-page-header.ui                  |  7 +++----
 gnome-initial-setup/pages/language/gis-welcome-widget.c | 11 ++---------
 gnome-initial-setup/pages/summary/gis-summary-page.ui   |  7 +++----
 6 files changed, 28 insertions(+), 17 deletions(-)
---
diff --git a/gnome-initial-setup/gis-assistant.gresource.xml b/gnome-initial-setup/gis-assistant.gresource.xml
index 59102c5..041cfb0 100644
--- a/gnome-initial-setup/gis-assistant.gresource.xml
+++ b/gnome-initial-setup/gis-assistant.gresource.xml
@@ -3,5 +3,6 @@
   <gresource prefix="/org/gnome/initial-setup">
     <file preprocess="xml-stripblanks">gis-assistant.ui</file>
     <file preprocess="xml-stripblanks">gis-page-header.ui</file>
+    <file>gis-page-header.css</file>
   </gresource>
 </gresources>
diff --git a/gnome-initial-setup/gis-page-header.c b/gnome-initial-setup/gis-page-header.c
index 26f3468..0b1a5af 100644
--- a/gnome-initial-setup/gis-page-header.c
+++ b/gnome-initial-setup/gis-page-header.c
@@ -181,4 +181,10 @@ gis_page_header_class_init (GisPageHeaderClass *klass)
                           G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 
   g_object_class_install_properties (gobject_class, PROP_LAST, obj_props);
+
+  g_autoptr(GtkCssProvider) provider = gtk_css_provider_new ();
+  gtk_css_provider_load_from_resource (provider, "/org/gnome/initial-setup/gis-page-header.css");
+  gtk_style_context_add_provider_for_screen (gdk_screen_get_default (),
+                                             GTK_STYLE_PROVIDER (provider),
+                                             GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
 }
diff --git a/gnome-initial-setup/gis-page-header.css b/gnome-initial-setup/gis-page-header.css
new file mode 100644
index 0000000..0186519
--- /dev/null
+++ b/gnome-initial-setup/gis-page-header.css
@@ -0,0 +1,13 @@
+/* Styles destined for GTK 4, borrowed from
+ * https://gitlab.gnome.org/GNOME/gtk/issues/1808#note_521862
+ */
+.large-title {
+   font-weight: 300;
+   font-size: 24pt;
+   letter-spacing: 0.2rem;
+}
+
+.title-1 {
+   font-weight: 800;
+   font-size: 20pt;
+}
diff --git a/gnome-initial-setup/gis-page-header.ui b/gnome-initial-setup/gis-page-header.ui
index 905bec6..e5e1795 100644
--- a/gnome-initial-setup/gis-page-header.ui
+++ b/gnome-initial-setup/gis-page-header.ui
@@ -23,10 +23,9 @@
             <property name="justify">center</property>
             <property name="max_width_chars">65</property>
             <property name="wrap">True</property>
-            <attributes>
-              <attribute name="weight" value="bold"/>
-              <attribute name="scale" value="1.8"/>
-            </attributes>
+            <style>
+              <class name="title-1"/>
+            </style>
           </object>
         </child>
         <child>
diff --git a/gnome-initial-setup/pages/language/gis-welcome-widget.c 
b/gnome-initial-setup/pages/language/gis-welcome-widget.c
index 39ad583..7f030bd 100644
--- a/gnome-initial-setup/pages/language/gis-welcome-widget.c
+++ b/gnome-initial-setup/pages/language/gis-welcome-widget.c
@@ -144,16 +144,9 @@ welcome (const char *locale_id)
 static GtkWidget *
 big_label (const char *text)
 {
-  GtkWidget *label;
-  PangoAttrList *attrs;
-
-  label = gtk_label_new (text);
+  GtkWidget *label = gtk_label_new (text);
 
-  attrs = pango_attr_list_new ();
-  pango_attr_list_insert (attrs, pango_attr_scale_new (2));
-  pango_attr_list_insert (attrs, pango_attr_weight_new (PANGO_WEIGHT_BOLD));
-  gtk_label_set_attributes (GTK_LABEL (label), attrs);
-  pango_attr_list_unref (attrs);
+  gtk_style_context_add_class (gtk_widget_get_style_context (label), "title-1");
 
   return label;
 }
diff --git a/gnome-initial-setup/pages/summary/gis-summary-page.ui 
b/gnome-initial-setup/pages/summary/gis-summary-page.ui
index ab6f850..9f9c5eb 100644
--- a/gnome-initial-setup/pages/summary/gis-summary-page.ui
+++ b/gnome-initial-setup/pages/summary/gis-summary-page.ui
@@ -69,10 +69,9 @@
                 <property name="justify">center</property>
                 <property name="label" translatable="yes">All done!</property>
                 <property name="wrap">True</property>
-                <attributes>
-                  <attribute name="weight" value="bold"/>
-                  <attribute name="scale" value="1.8"/>
-                </attributes>
+                <style>
+                  <class name="large-title"/>
+                </style>
               </object>
               <packing>
                 <property name="pack_type">end</property>