master 9e78b82d1b8: Update default font substitution list

[Po Lu]

branch: master
commit 9e78b82d1b8eaa02309d220d995db199e9e040fe
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Update default font substitution list
    
    * src/sfntfont-android.c (init_sfntfont_android): Account for
    Android 4.x not distributing Noto Serif.
---
 src/sfntfont-android.c | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/sfntfont-android.c b/src/sfntfont-android.c
index be75c2d9e22..e49615210eb 100644
--- a/src/sfntfont-android.c
+++ b/src/sfntfont-android.c
@@ -746,13 +746,19 @@ syms_of_sfntfont_android_for_pdumper (void)
 void
 init_sfntfont_android (void)
 {
+  int api_level;
+
   if (!android_init_gui)
     return;
 
+  api_level = android_get_current_api_level ();
+
   /* Make sure to pick the proper Sans Serif and Serif fonts for the
      version of Android the device is running.  */
 
-  if (android_get_current_api_level () >= 15)
+  if (api_level >= 21)
+    /* Android 5.0 and later distribute Noto Serif in lieu of Droid
+       Serif.  */
     Vsfnt_default_family_alist
       = list4 (Fcons (build_string ("Monospace"),
                      build_string ("Droid Sans Mono")),
@@ -764,6 +770,20 @@ init_sfntfont_android (void)
                      build_string ("Roboto")),
               Fcons (build_string ("DejaVu Serif"),
                      build_string ("Noto Serif")));
+  else if (api_level >= 15)
+    /* Android 4.0 and later distribute Roboto in lieu of Droid
+       Sans.  */
+    Vsfnt_default_family_alist
+      = list4 (Fcons (build_string ("Monospace"),
+                     build_string ("Droid Sans Mono")),
+              /* Android doesn't come with a Monospace Serif font, so
+                 this will have to do.  */
+              Fcons (build_string ("Monospace Serif"),
+                     build_string ("Droid Sans Mono")),
+              Fcons (build_string ("Sans Serif"),
+                     build_string ("Roboto")),
+              Fcons (build_string ("DejaVu Serif"),
+                     build_string ("Droid Serif")));
   else
     Vsfnt_default_family_alist
       = list4 (Fcons (build_string ("Monospace"),