diff --git a/cpdftruetype.ml b/cpdftruetype.ml index c02ce18..7ebad43 100644 --- a/cpdftruetype.ml +++ b/cpdftruetype.ml @@ -245,6 +245,38 @@ let write_loca_table subset cmap indexToLocFormat bs loca = pairs; for x = 1 to padding !len do putval bs 8 0l done +(* Expand the subset of locations to include composites *) +let expand_composites_one mk_b loca glyfoffset locations = + let rec read_components b = + let componentFlags = read_ushort b in + let glyphIndex = read_ushort b in + (* Skip the rest of this component *) + if componentFlags land 0x0001 > 0 then discard_bytes b 4 else discard_bytes b 2; + (if componentFlags land 0x0008 > 0 then discard_bytes b 2 + else if componentFlags land 0x0040 > 0 then discard_bytes b 4 + else if componentFlags land 0x0080 > 0 then discard_bytes b 8); + if componentFlags land 0x0020 > 0 then glyphIndex::read_components b else [glyphIndex] + in + let expanded = + map + (fun l -> + let b = mk_b (i32toi (i32add glyfoffset loca.(l))) in + let numberOfContours = read_short b in + if numberOfContours < 0 then + begin + discard_bytes b 8; (* xMin, xMax, yMin, yMax *) + l::read_components b + end + else + [l]) + locations + in + sort compare (setify (flatten expanded)) + +let rec expand_composites mk_b loca glyfoffset locations = + let expanded = expand_composites_one mk_b loca glyfoffset locations in + if expanded = locations then expanded else expand_composites mk_b loca glyfoffset expanded + (* Write the notdef glyf, and any others in the subset *) let write_glyf_table subset cmap bs mk_b glyfoffset loca = if !dbg then Printf.printf "***write_glyf_table\n"; @@ -259,8 +291,8 @@ let write_glyf_table subset cmap bs mk_b glyfoffset loca = with Not_found -> ()) subset; - let locnums = sort compare (map fst (list_of_hashtbl locnums)) in - if !dbg then + let locnums = expand_composites mk_b loca glyfoffset (sort compare (map fst (list_of_hashtbl locnums))) in + (*if !dbg then*) (Printf.printf "We want glyfs for locations: "; iter (Printf.printf "%i ") locnums; Printf.printf "\n"); let byteranges = map (fun x -> (loca.(x), loca.(x + 1))) locnums in @@ -645,12 +677,12 @@ let parse ~subset data encoding = widths; subset_fontfile; subset; tounicode}) firstchars_2 lastchars_2 widths_2 seconds_subsets subsets_2 seconds_tounicodes in - (*Printf.printf "\nMain subset:\n"; + Printf.printf "\nMain subset:\n"; debug_t one; write_font "one.ttf" one.subset_fontfile; Printf.printf "\nHigher subset:\n"; debug_t (hd twos); - write_font "two.ttf" (hd twos).subset_fontfile;*) + write_font "two.ttf" (hd twos).subset_fontfile; one::twos let parse ~subset data encoding =