[gtk/parse-pango-types: 1/2] builder: Parse some pango types

[Matthias Clasen <matthiasc src gnome org>]

commit 688085cfafd4dd00dea23e9040fb25ae66783d7c
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jan 18 12:34:58 2022 -0500

    builder: Parse some pango types
    
    PangoAttrList and PangoFontDescription
    have from-string apis, so we can just
    support them as property values.

 gtk/gtkbuilder.c | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
---
diff --git a/gtk/gtkbuilder.c b/gtk/gtkbuilder.c
index 545699c45c..7e04498db5 100644
--- a/gtk/gtkbuilder.c
+++ b/gtk/gtkbuilder.c
@@ -2322,6 +2322,40 @@ gtk_builder_value_from_string_type (GtkBuilder   *builder,
         {
           g_value_take_boxed (value, g_bytes_new (string, strlen (string)));
         }
+      else if (G_VALUE_HOLDS (value, PANGO_TYPE_FONT_DESCRIPTION))
+        {
+          PangoFontDescription *desc;
+
+          desc = pango_font_description_from_string (string);
+          if (desc)
+            g_value_take_boxed (value, desc);
+          else
+            {
+              g_set_error (error,
+                           GTK_BUILDER_ERROR,
+                           GTK_BUILDER_ERROR_INVALID_VALUE,
+                           "Could not parse '%s' as a %s",
+                           string, G_VALUE_TYPE_NAME (value));
+              ret = FALSE;
+            }
+        }
+      else if (G_VALUE_HOLDS (value, PANGO_TYPE_ATTR_LIST))
+        {
+          PangoAttrList *attrs;
+
+          attrs = pango_attr_list_from_string (string);
+          if (attrs)
+            g_value_take_boxed (value, attrs);
+          else
+            {
+              g_set_error (error,
+                           GTK_BUILDER_ERROR,
+                           GTK_BUILDER_ERROR_INVALID_VALUE,
+                           "Could not parse '%s' as a %s",
+                           string, G_VALUE_TYPE_NAME (value));
+              ret = FALSE;
+            }
+        }
       else
         {
           g_set_error (error,