[gtk] label: Parse new pango attributes

[Matthias Clasen <matthiasc src gnome org>]

commit f1c7803f800588e4716b448d62feb2aef82470ca
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jul 27 00:02:08 2019 -0400

    label: Parse new pango attributes
    
    Support allow-breaks and show attributes.
    These will be in pango 1.44

 gtk/gtklabel.c             | 8 ++++++++
 testsuite/gtk/ui/label1.ui | 2 ++
 2 files changed, 10 insertions(+)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 6c867eed71..c82d01eead 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -1543,6 +1543,14 @@ attribute_from_text (GtkBuilder   *builder,
       if (gtk_builder_value_from_string_type (builder, G_TYPE_INT, value, &val, error))
         attribute = pango_attr_background_alpha_new ((guint16)g_value_get_int (&val));
       break;
+    case PANGO_ATTR_ALLOW_BREAKS:
+      if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
+        attribute = pango_attr_allow_breaks_new (g_value_get_boolean (&val));
+      break;
+    case PANGO_ATTR_SHOW:
+      if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_SHOW_FLAGS, value, &val, error))
+       attribute = pango_attr_show_new (g_value_get_flags (&val));
+      break;
     case PANGO_ATTR_INVALID:
     default:
       break;
diff --git a/testsuite/gtk/ui/label1.ui b/testsuite/gtk/ui/label1.ui
index e83b2dd60b..5880714f17 100644
--- a/testsuite/gtk/ui/label1.ui
+++ b/testsuite/gtk/ui/label1.ui
@@ -20,6 +20,8 @@
       <attribute name="underline-color" value="green"/>
       <attribute name="strikethrough-color" value="purple"/>
       <attribute name="scale" value="1.5"/>
+      <attribute name="allow-breaks" value="true"/>
+      <attribute name="show" value="spaces|line-breaks"/>
     </attributes>
   </object>
 </interface>