[pango] Allow font_family=NULL in load_font() and load_fontset() methods

[Behdad Esfahbod <behdad src gnome org>]

commit caabe183c7747d7486695071ab592e677bbdce25
Author: Behdad Esfahbod <behdad behdad org>
Date:   Mon Apr 6 19:45:04 2009 -0400

    Allow font_family=NULL in load_font() and load_fontset() methods
---
 pango/pango-context.c      |    5 +----
 pango/pango-fontmap.c      |    6 +++---
 pango/pangoatsui-fontmap.c |    5 ++++-
 pango/pangowin32-fontmap.c |    8 +++++---
 pango/pangox-fontmap.c     |    4 +++-
 5 files changed, 16 insertions(+), 12 deletions(-)

diff --git a/pango/pango-context.c b/pango/pango-context.c
index 6c40a29..0b70f59 100644
--- a/pango/pango-context.c
+++ b/pango/pango-context.c
@@ -287,7 +287,6 @@ pango_context_load_font (PangoContext               *context,
 			 const PangoFontDescription *desc)
 {
   g_return_val_if_fail (context != NULL, NULL);
-  g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL);
 
   return pango_font_map_load_font (context->font_map, context, desc);
 }
@@ -306,11 +305,9 @@ pango_context_load_font (PangoContext               *context,
 PangoFontset *
 pango_context_load_fontset (PangoContext               *context,
 			    const PangoFontDescription *desc,
-			     PangoLanguage             *language)
+			    PangoLanguage             *language)
 {
   g_return_val_if_fail (context != NULL, NULL);
-  g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL);
-  g_return_val_if_fail (pango_font_description_get_size (desc) != 0, NULL);
 
   return pango_font_map_load_fontset (context->font_map, context, desc, language);
 }
diff --git a/pango/pango-fontmap.c b/pango/pango-fontmap.c
index a2b1452..13f4263 100644
--- a/pango/pango-fontmap.c
+++ b/pango/pango-fontmap.c
@@ -90,7 +90,6 @@ pango_font_map_load_font  (PangoFontMap               *fontmap,
 			   const PangoFontDescription *desc)
 {
   g_return_val_if_fail (fontmap != NULL, NULL);
-  g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL);
 
   return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_font (fontmap, context, desc);
 }
@@ -133,7 +132,6 @@ pango_font_map_load_fontset (PangoFontMap                 *fontmap,
 			     PangoLanguage                *language)
 {
   g_return_val_if_fail (fontmap != NULL, NULL);
-  g_return_val_if_fail (pango_font_description_get_family (desc) != NULL, NULL);
 
   return PANGO_FONT_MAP_GET_CLASS (fontmap)->load_fontset (fontmap, context, desc, language);
 }
@@ -180,12 +178,14 @@ pango_font_map_real_load_fontset (PangoFontMap               *fontmap,
 				  PangoLanguage              *language)
 {
   PangoFontDescription *tmp_desc = pango_font_description_copy_static (desc);
+  const char *family;
   char **families;
   int i;
   PangoFontsetSimple *fonts;
   static GHashTable *warned_fonts = NULL;
 
-  families = g_strsplit (pango_font_description_get_family (desc), ",", -1);
+  family = pango_font_description_get_family (desc);
+  families = g_strsplit (family ? family : "", ",", -1);
 
   fonts = pango_fontset_simple_new (language);
 
diff --git a/pango/pangoatsui-fontmap.c b/pango/pangoatsui-fontmap.c
index 0844e6e..f433440 100644
--- a/pango/pangoatsui-fontmap.c
+++ b/pango/pangoatsui-fontmap.c
@@ -669,6 +669,7 @@ pango_atsui_font_map_load_font (PangoFontMap               *fontmap,
 {
   PangoATSUIFontMap *atsuifontmap = (PangoATSUIFontMap *)fontmap;
   PangoATSUIFamily *font_family;
+  const gchar *family;
   gchar *name;
   gint size;
 
@@ -676,7 +677,9 @@ pango_atsui_font_map_load_font (PangoFontMap               *fontmap,
   if (size < 0)
     return NULL;
 
-  name = g_utf8_casefold (pango_font_description_get_family (description), -1);
+  family = pango_font_description_get_family (description);
+  family = family ? family : "";
+  name = g_utf8_casefold (family, -1);
   font_family = g_hash_table_lookup (atsuifontmap->families, name);
   g_free (name);
 
diff --git a/pango/pangowin32-fontmap.c b/pango/pangowin32-fontmap.c
index 833219a..360ec03 100644
--- a/pango/pangowin32-fontmap.c
+++ b/pango/pangowin32-fontmap.c
@@ -618,13 +618,15 @@ pango_win32_font_map_load_font (PangoFontMap               *fontmap,
   PangoWin32Family *win32family;
   PangoFont *result = NULL;
   GSList *tmp_list;
+  const char *family;
 
   g_return_val_if_fail (description != NULL, NULL);
 
-  PING (("name=%s", pango_font_description_get_family (description)));
+  family = pango_font_description_get_family (description);
+  family = family ? family : "";
+  PING (("name=%s", family))
 
-  win32family = g_hash_table_lookup (win32fontmap->families,
-				     pango_font_description_get_family (description));
+  win32family = g_hash_table_lookup (win32fontmap->families, family);
   if (win32family)
     {
       PangoWin32Face *best_match = NULL;
diff --git a/pango/pangox-fontmap.c b/pango/pangox-fontmap.c
index 9303334..6d5e547 100644
--- a/pango/pangox-fontmap.c
+++ b/pango/pangox-fontmap.c
@@ -466,12 +466,14 @@ pango_x_font_map_load_font (PangoFontMap               *fontmap,
   PangoXFamily *font_family;
   PangoFont *result = NULL;
   GSList *tmp_list;
+  const gchar *family;
   gchar *name;
   gint size;
 
   g_return_val_if_fail (description != NULL, NULL);
 
-  name = g_ascii_strdown (pango_font_description_get_family (description), -1);
+  family = pango_font_description_get_family (description);
+  name = g_ascii_strdown (family ? family : "", -1);
   size = pango_font_description_get_size (description);
 
   if (size < 0)