[ft-devel] units_per_em in CFF/CID FDArray

[Dirck Blaskey]

Hi Werner & Co.

Today I ran across a CFF CID font in a PDF file where the FontMatrix / 
units_per_em
is 2048 instead of 1000, except FontMatrix is specified in the FDArray 
for the subfont,
not in the top dict.

Here is the patch against the latest CVS (ignore the revision numbers)
This may not be correct in the general case (multiple sub fonts) but it 
works fine for this font.

Index: cffobjs.c
===================================================================
RCS file: /cvsroot/freetype2/src/cff/cffobjs.c,v
retrieving revision 1.1.1.1
diff -w -u -r1.1.1.1 cffobjs.c
--- cffobjs.c    2005/04/15 00:13:25    1.1.1.1
+++ cffobjs.c    2005/04/15 05:41:23
@@ -537,6 +537,10 @@

        if ( dict->units_per_em )
          cffface->units_per_EM = dict->units_per_em;
+        else if (cff->num_subfonts &&
+                 cff->subfonts[0] &&
+                 cff->subfonts[0]->font_dict.units_per_em)
+          cffface->units_per_EM = cff->subfonts[0]->font_dict.units_per_em;
        else
          cffface->units_per_EM = 1000;