Allow inexact font family matching.

In SSA/ASS fonts are sometimes referenced by their "full name",
which is usually a concatenation of family name and font
style (ex. Ottawa Bold). Full name is available from
FontConfig pattern element FC_FULLNAME, but it is never
used for font matching.
Therefore, I'm removing words from the end of the name one
by one, and adding shortened names to the pattern. It seems
that the first value (full name in this case) has
precedence in matching.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@26623 b3059339-0415-0410-9bf9-f77b7e298cf2

1 files changed, 20 insertions, 0 deletions

diff --git a/libass/ass_fontconfig.c b/libass/ass_fontconfig.c
index b9a8f42..48b24ad 100644
--- a/libass/ass_fontconfig.c
+++ b/libass/ass_fontconfig.c
@@ -81,6 +81,26 @@ static char* _select_font(fc_instance_t* priv, const char* family, unsigned bold
 		goto error;
 	
 	FcPatternAddString(pat, FC_FAMILY, (const FcChar8*)family);
+
+	// In SSA/ASS fonts are sometimes referenced by their "full name",
+	// which is usually a concatenation of family name and font
+	// style (ex. Ottawa Bold). Full name is available from
+	// FontConfig pattern element FC_FULLNAME, but it is never
+	// used for font matching.
+	// Therefore, I'm removing words from the end of the name one
+	// by one, and adding shortened names to the pattern. It seems
+	// that the first value (full name in this case) has
+	// precedence in matching.
+	// An alternative approach could be to reimplement FcFontSort
+	// using FC_FULLNAME instead of FC_FAMILY.
+	if (strchr(family, ' ')) {
+		char *p, *s = strdup(family);
+		while (p = strrchr(s, ' ')) {
+			*p = '\0';
+			FcPatternAddString(pat, FC_FAMILY, (const FcChar8*)s);
+		}
+		free(s);
+	}
 	FcPatternAddBool(pat, FC_OUTLINE, FcTrue);
 	FcPatternAddInteger(pat, FC_SLANT, italic);
 	FcPatternAddInteger(pat, FC_WEIGHT, bold);