[pango: 5/7] pangowin32-fontmap: load windows fallbacks and aliases in class init

[Chun-wei Fan <fanchunwei src gnome org>]

commit 475e2d7cc399241441d06a36542bdcb577276ea3
Author: Aaron Boxer <aaron boxer collabora com>
Date:   Thu May 28 15:56:40 2020 -0600

    pangowin32-fontmap: load windows fallbacks and aliases in class init
    
    Currently, because of the g_once_init*, only the very first font map
    that is created will get the correct list of aliases. With these changes
    the fontmap class loads the aliases once, and this hash table is used
    by all fontmap objects.

 pango/pangowin32-fontmap.c | 27 ++++++++++-----------------
 pango/pangowin32-private.h |  2 +-
 2 files changed, 11 insertions(+), 18 deletions(-)
---
diff --git a/pango/pangowin32-fontmap.c b/pango/pangowin32-fontmap.c
index ff7a6e94..09de5fa0 100644
--- a/pango/pangowin32-fontmap.c
+++ b/pango/pangowin32-fontmap.c
@@ -611,19 +611,6 @@ read_windows_fallbacks (GHashTable *ht_aliases)
 
 #endif
 
-
-static gboolean
-load_aliases (GHashTable *ht_aliases)
-{
-
-#ifdef HAVE_CAIRO_WIN32
-  read_windows_fallbacks (ht_aliases);
-  read_builtin_aliases (ht_aliases);
-#endif
-
-  return TRUE;
-}
-
 static void
 lookup_aliases (GHashTable   *aliases_ht,
                 const char   *fontname,
@@ -634,9 +621,6 @@ lookup_aliases (GHashTable   *aliases_ht,
   struct PangoAlias *alias;
   static gsize aliases_inited = 0;
 
-  if (g_once_init_enter (&aliases_inited))
-    g_once_init_leave (&aliases_inited, load_aliases (aliases_ht));
-
   alias_key.alias = g_ascii_strdown (fontname, -1);
   alias = g_hash_table_lookup (aliases_ht, &alias_key);
   g_free (alias_key.alias);
@@ -775,8 +759,9 @@ pango_win32_font_map_fontset_add_fonts (PangoFontMap          *fontmap,
   int n_aliases;
   int j;
   PangoWin32FontMap *win32fontmap = PANGO_WIN32_FONT_MAP (fontmap);
+  PangoWin32FontMapClass *class = (PangoWin32FontMapClass*)G_OBJECT_GET_CLASS(win32fontmap);
 
-  lookup_aliases (win32fontmap->aliases, family, &aliases, &n_aliases);
+  lookup_aliases (class->aliases, family, &aliases, &n_aliases);
   if (n_aliases)
   {
     for (j = 0; j < n_aliases; j++)
@@ -819,6 +804,14 @@ _pango_win32_font_map_class_init (PangoWin32FontMapClass *class)
   fontmap_class->list_families = pango_win32_font_map_list_families;
   fontmap_class->shape_engine_type = PANGO_RENDER_TYPE_WIN32;
   fontmap_class->get_face = pango_win32_font_map_get_face;
+  class->aliases = g_hash_table_new_full ((GHashFunc)alias_hash,
+                                          (GEqualFunc)alias_equal,
+                                          (GDestroyNotify)alias_free,
+                                          NULL);
+#ifdef HAVE_CAIRO_WIN32
+  read_windows_fallbacks (class->aliases);
+  read_builtin_aliases (class->aliases);
+#endif
 
   _pango_win32_get_display_dc ();
 }
diff --git a/pango/pangowin32-private.h b/pango/pangowin32-private.h
index f5620b87..1c9c1c09 100644
--- a/pango/pangowin32-private.h
+++ b/pango/pangowin32-private.h
@@ -113,7 +113,7 @@ struct _PangoWin32FontMapClass
                           PangoContext               *context,
                           PangoWin32Face             *face,
                           const PangoFontDescription *desc);
-
+  GHashTable *aliases;
 };
 
 struct _PangoWin32Font