[poppler] Some patches WAS Re: Poppler 0.19.1 (0.20 Beta 1) released

Albert Astals Cid aacid at kde.org
Mon Mar 26 13:52:25 PDT 2012 

El Dilluns, 26 de març de 2012, a les 21:20:46, Thomas Freitag va escriure:
> Am 26.03.2012 20:39, schrieb Albert Astals Cid:
> > El Dilluns, 26 de març de 2012, a les 20:30:35, Thomas Freitag va 
escriure:
> >> Am 26.03.2012 19:47, schrieb Albert Astals Cid:
> >>> El Diumenge, 25 de març de 2012, a les 22:34:20, Thomas Freitag va
> > 
> > escriure:
> >>>> Am 19.03.2012 08:05, schrieb Thomas Freitag:
> >>>>> Am 16.03.2012 16:08, schrieb Carlos Garcia Campos:
> >>>>>> Excerpts from Albert Astals Cid's message of jue mar 15 22:23:15
> >>>>>> +0100
> >>> 
> >>> 2012:
> >>>>>>> Available from
> >>>>>>> http://poppler.freedesktop.org/poppler-0.19.1.tar.gz
> >>>>>>> 
> >>>>>>> WARNING: This is a unstable release, it is actually 0.20 Beta 1
> >>>>>>> release,
> >>>>>>> it
> >>>>>>> should work like any release from the 0.18 branch, but do not blame
> >>>>>>> us
> >>>>>>> if it turns your cat into a lion and eats your breakfast.
> >>>>>>> 
> >>>>>>> Changes against the 0.19.0 branch:
> >>>>>>> 
> >>>>>>> core:
> >>>>>>>     * Improve CJK suport in PSOutputDev
> >>>>>>>     * CJK substitute implementation on WIndows platforms
> >>>>>>>     * Do not crash on malformed files with 0 bits in the color map
> >>>>>>>     of
> >>>>>>>     an
> >>>>>>>     image
> >>>>>>>     * Fix regression in some PSOutputDev array sizing
> >>>>>>>     * Improvements to Annotation editing
> >>>>>>>     * Fix logic error in Rendition parsing code (Bug #47063)
> >>>>>>>     * Minor API changes to SplashOutputDev (Bug #46622)
> >>>>>>>     * Fix mismatch in some functions declarations
> >>>>>>>     * Update poppler copyright year
> >>>>>>> 
> >>>>>>> utils:
> >>>>>>>     * pdftops: Fix -passfonts regression. (Bug #46744)
> >>>>>>>     * pdffonts: List the encoding of each font. (Bug #46888)
> >>>>>>>     * pdftohtml: Add possibilty of controlling word breaks
> >>>>>>>     percentage.
> >>>>>>>     (Bug #47022)>>>
> >>>>>>> 
> >>>>>>> qt4:
> >>>>>>>     * Support for LinkMovie object (Bug #40561)
> >>>>>>>     * Support for Media Rendition
> >>>>>>> 
> >>>>>>> glib:
> >>>>>>>     * Add poppler_fonts_iter_get_encoding
> >>>>>>>     * Improvements to the demo
> >>>>>>> 
> >>>>>>> Testing, patches and bug reports welcome.
> >>>>>>> 
> >>>>>>> My TODO list is:
> >>>>>>>     * Work with Fabio in his Annot Qt4 patches
> >>>>>>>     * Decide something with Adrian in the "Pdf that uses the symbol
> >>>>>>>     font"
> >>>>>>>     thread * Review 47186 pdftohtml: mask images are not extracted,
> >>>>>>>     unless they are JPEG * Review 32340 pdftohtml: renders images
> >>>>>>>     vertically flipped
> >>>>>>> 
> >>>>>>> Remember feature freeze is in 2 weeks with Beta 2
> >>>>>>> 
> >>>>>>> If anyone has anything else that thinks it is waiting on me for
> >>>>>>> further
> >>>>>>> feedback, tellme, because it's not on my list
> >>>>>> 
> >>>>>> The xpdf303 merge introduced some regressions in the cairo backend,
> >>>>>> I'll try to find some time this weekend to send more details to the
> >>>>>> list.
> >>>> 
> >>>> I just finished the patch for these regressions, they had differents
> >>>> reasons 1. In CharCodeToUnicode::mapToUnicode the identity support was
> >>>> missing 2. The new algorithms for axial and radial shading caused
> >>>> problems in cairo. I revert these changes but removed the examination
> >>>> of
> >>>> hidden content (this is already done in the calling function)
> >>>> 3. The examination of optional hidden content in showing text was
> >>>> wrong:
> >>>> of course hidden text should not be shown, but text parameters like
> >>>> text
> >>>> position in the state must be changed!
> >>>> 4. Searching and finding fonts especially with base14 fonts should be
> >>>> more exact than just looking at the base14 name (i.e. fixed width and
> >>>> so
> >>>> on) when using fontconfig. I implement that to find the best font
> >>>> fitting to the needs.
> >>> 
> >>> Don't know which of them but applying it makes me lose half of the
> >>> letter
> >>> in bug-poppler28632.pdf
> >> 
> >> Can You explain it a little bit more? I saw especially this one as on
> >> enhancement. I send You in private (it's nearal 1 MByte) the output with
> >> cairo and splash with this patch, the ouptput with splash with the head
> >> revisiion and the ouput with r92ce79.
> > 
> > You can reproduce the problem. Have a look at your files and see that bug-
> > poppler28632-spash-patch-1.png has much fewer characters than bug-
> > poppler28632-spash-head.1.png (e.g. first column, last row, the 'a' is
> > missing)
> 
> I see now: In the head revision we started with "Times New Roman", and
> fontconfig delivers:
> "/usr/share/fonts/truetype/ttf-liberation/LiberationSerif-Regular.ttf".
> In the patch (and also in the revision), we start with "Times-Roman"
> (Times New Roman is in the base14FontMap, and should therefore be
> replaced by "Times-Roman"), and fontconfig delivers
> "/usr/share/fonts/X11/Type1/n021003l.pfb".
> What shall I do? The comments say the following:
> 
> // Acrobat 4.0 and earlier substituted Base14-compatible fonts without
> // providing Widths and a FontDescriptor, so we munge the names into
> // the proper Base14 names.  This table is from implementation note 44
> // in the PDF 1.4 spec, with some additions based on empirical
> // evidence.
> 
> And without this substitution I got problems in other PDF, i.e. with
> "TimesNewRomanPSMT" or simular in another PDF.

Ok, i'll carry on with this, hopefully it'll get fixed with another patch from 
Adrian that tries to asks fontconfig for a font that has all the characters we 
need. And if not, bah, it's as bad as we were so it's ok.

Albert

> 
> Thomas
> 
> > Albert
> > 
> >> Thomas
> >> 
> >>> Can you please have a look?
> >>> 
> >>> Albert
> >>> 
> >>>> Cheers,
> >>>> Thomas
> >>>> 
> >>>>>>> Albert
> >>>>>> 
> >>>>>> Thanks,
> >>>>>> 
> >>>>>> 
> >>>>>> _______________________________________________
> >>>>>> poppler mailing list
> >>>>>> poppler at lists.freedesktop.org
> >>>>>> http://lists.freedesktop.org/mailman/listinfo/poppler
> >>>>> 
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> >>>>> http://lists.freedesktop.org/mailman/listinfo/poppler
> >>> 
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> >>> 
> >>> .
> >> 
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> > 
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> > .
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