[gtksourceview] map: improve default font sizes

[Christian Hergert <chergert src gnome org>]

commit d71a20dc127c16e97ba7c03d95e35278b9eef3c7
Author: Christian Hergert <chergert redhat com>
Date:   Thu Oct 14 17:42:51 2021 -0700

    map: improve default font sizes

 gtksourceview/gtksourcemap.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/gtksourceview/gtksourcemap.c b/gtksourceview/gtksourcemap.c
index 82eed216..7aaa217e 100644
--- a/gtksourceview/gtksourcemap.c
+++ b/gtksourceview/gtksourcemap.c
@@ -247,7 +247,6 @@ load_override_font (GtkSourceMap *map)
        pango_fc_font_map_set_config (PANGO_FC_FONT_MAP (font_map), map_font_config);
        gtk_widget_set_font_map (GTK_WIDGET (map), font_map);
        font_desc = pango_font_description_from_string ("BuilderBlocks");
-       pango_font_description_set_size (font_desc, 3 * PANGO_SCALE);
 
        g_assert (map_font_config != NULL);
        g_assert (font_map != NULL);
@@ -591,6 +590,11 @@ gtk_source_map_set_font_desc (GtkSourceMap               *map,
                if (font_desc)
                {
                        priv->font_desc = pango_font_description_copy (font_desc);
+
+                       if ((pango_font_description_get_set_fields (priv->font_desc) & PANGO_FONT_MASK_SIZE) 
== 0)
+                       {
+                               pango_font_description_set_size (priv->font_desc, 1.75 * PANGO_SCALE);
+                       }
                }
        }
 
@@ -1268,7 +1272,7 @@ gtk_source_map_init (GtkSourceMap *map)
        completion = gtk_source_view_get_completion (GTK_SOURCE_VIEW (map));
        gtk_source_completion_block_interactive (completion);
 
-       gtk_source_map_set_font_name (map, "BuilderBlocks 2");
+       gtk_source_map_set_font_name (map, "BuilderBlocks");
 
        drag = gtk_gesture_drag_new ();
        gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (drag),