Albert Astals Cid
aacid at kde.org
Tue Dec 11 09:59:55 PST 2012
El Dilluns, 10 de desembre de 2012, a les 15:03:40, Takuma TANAKA va escriure:
> Dear Folks,
> I have got the pdf that has invalid font weight.
> The number of one character in the pdf is 850,
> and pdftoppm result can not rasterize.
> Please see attached the documents (FontWeight850.pdf and summary.jpg).
> I hope the patch that Mr. Stefan Thomas offered 2 years ago is applied.
> But I also understand that such a font weight number isn't described in
> pdf specification.
> If poppler's policy doesn't accept such a font weight, I will handle
Which poppler are you using? Which pdftoppm command line options? I get the 3
here just fine.
> > Albert Astals Cid wrote:
> > > A Divendres, 30 d'abril de 2010, Stefan Thomas va escriure:
> > > Hey folks,
> > >
> > > Got a quick patch. The GfxFont parses the FontWeight as per the PDF
> > > Specification, allowing only certain discrete values and raising an
> > > error otherwise. We've encountered PDFs in the wild that don't
> adhere to
> > > the standard. Acroread seems to handle the case gracefully, falling
> > > to the nearest valid font weight. Poppler raises an error and ignores
> > > the FontWeight property altogether.
> > >
> > > This patch adds the same graceful handling to Poppler. I don't see a
> > > reason not to allow non-standard font weights. Poppler is a renderer,
> > > not a validator. If we can handle this case gracefully and
> > > to the user, we should.
> > >
> > > However, one could make an argument for adding a basic bounds check for
> > > values outside of 50-950 or so. Personally I'm from the school of
> > > to handle problems as locally as possible, but if a PDF has a font
> > > weight with nonsensical values, perhaps that would be better handled
> > > with an error. We opted to go without the bounds check for simplicity,
> > > but it would be easy enough to add:
> > >
> > > if (obj2.getNum() < 50 || obj2.getNum() > 950) error(-1, "Invalid Font
> > > Weight");
> > > else if (obj2.getNum() <= 150) weight = W100;
> > > [..etc..]
> > Is there any chance we can get such a PDF?
> > Albert
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