[pango/simple-fontmap: 17/35] font: Export some functions privately

[Matthias Clasen <matthiasc src gnome org>]

commit 95e04959d2aa5d393c170593d15765090ff77379
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Dec 29 12:32:11 2021 -0500

    font: Export some functions privately
    
    pango_font_description_better_match is not
    the greatest api to sort fonts, export the
    distance function for use in PangoHbFamily.

 pango/fonts.c              | 23 +++++++++++++++--------
 pango/pango-font-private.h |  6 ++++++
 2 files changed, 21 insertions(+), 8 deletions(-)
---
diff --git a/pango/fonts.c b/pango/fonts.c
index 99262942..846f56af 100644
--- a/pango/fonts.c
+++ b/pango/fonts.c
@@ -745,9 +745,18 @@ pango_font_description_merge_static (PangoFontDescription       *desc,
   desc->mask |= new_mask;
 }
 
-static gint
-compute_distance (const PangoFontDescription *a,
-                  const PangoFontDescription *b)
+gboolean
+pango_font_description_is_similar (const PangoFontDescription *a,
+                                   const PangoFontDescription *b)
+{
+  return a->variant == b->variant &&
+         a->stretch == b->stretch &&
+         a->gravity == b->gravity;
+}
+
+int
+pango_font_description_compute_distance (const PangoFontDescription *a,
+                                         const PangoFontDescription *b)
 {
   if (a->style == b->style)
     {
@@ -792,12 +801,10 @@ pango_font_description_better_match (const PangoFontDescription *desc,
   g_return_val_if_fail (desc != NULL, G_MAXINT);
   g_return_val_if_fail (new_match != NULL, G_MAXINT);
 
-  if (new_match->variant == desc->variant &&
-      new_match->stretch == desc->stretch &&
-      new_match->gravity == desc->gravity)
+  if (pango_font_description_is_similar (new_match, desc))
     {
-      int old_distance = old_match ? compute_distance (desc, old_match) : G_MAXINT;
-      int new_distance = compute_distance (desc, new_match);
+      int old_distance = old_match ? pango_font_description_compute_distance (desc, old_match) : G_MAXINT;
+      int new_distance = pango_font_description_compute_distance (desc, new_match);
 
       if (new_distance < old_distance)
         return TRUE;
diff --git a/pango/pango-font-private.h b/pango/pango-font-private.h
index 885e38c1..f378ccdc 100644
--- a/pango/pango-font-private.h
+++ b/pango/pango-font-private.h
@@ -63,6 +63,12 @@ static inline int pango_font_get_absolute_size (PangoFont *font)
   return priv->get_absolute_size (font);
 }
 
+gboolean pango_font_description_is_similar       (const PangoFontDescription *a,
+                                                  const PangoFontDescription *b);
+
+int      pango_font_description_compute_distance (const PangoFontDescription *a,
+                                                  const PangoFontDescription *b);
+
 G_END_DECLS
 
 #endif /* __PANGO_FONT_PRIVATE_H__ */