Hi On Saturday 26 May 2007 10:47:40 you wrote: > > On Saturday 26 May 2007 02:13:52 Werner LEMBERG wrote: > > > Hmm, this font doesn't have a `cmap' table, which is invalid according > > > to the OpenType standard, and the behaviour is defined as > > > `implementation specific' in PDF standard (see section 5.5. in the PDF > > > 1.6 specification). > > > > I see but lots of real world PDF files have this kind of fonts :-/ > > I remember, ft-devel list receives several posts per year > saying "I found an embedded font in PDF that FT2 cannot > load, FT2 should load it". It's not always stated which > application or library using FT2 to load embedded TrueType > data from PDF. > > In my opinion, embedded font in PDF is NOT self-standing > font file. Even if it's forcibly loaded by ignoring essential > tables, it is no more than jumping the first hurdle. > Without cmap, most character-based API are not usable. > One of the next expected hurdle might be "we want to > convert glyph index to character code, to extract or > search a text in PDF. FT2 should do..." It is impossible. > Such requirement should be supplied by slightly higher > level library which can associate the text object, > embedded font object, CMap object, ToUnicode object. > I think it's far higher than FT2. As a result, > the behaviour of current FT2 is reasonable, I think. > > However, if somebody can define the reasonable subset of > FT2 API which is required by most PDF parser, it will be > quite helpful for both of FT2 and PDF-related softwares. > If you have some idea of subsetted API for embedded font, > please let me know.
I am CC'ing one of the KPDF's author Albert Astals Cid who extracted the problematic font for me. Maybe he might help us with whats the minimal api needed for a PDF viewer. Regards, ismail -- Perfect is the enemy of good
signature.asc
Description: This is a digitally signed message part.
_______________________________________________ Freetype-devel mailing list Freetype-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/freetype-devel
