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

[Thomas Freitag]

Am 26.03.2012 21:20, schrieb Thomas Freitag:
> 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.
You can see, what I mean, if You just remove the line

   { "TimesNewRoman",                "Times-Roman" },

(should be line 121 in GfxFont.cc) from base14FontMap.

Thomas
>
> Thomas
>
>>
>> Albert
>>
>>> Thomas
>>>
>>>> Can you please have a look?
>>>>
>>>> Albert
>>>>
>>>>> Cheers,
>>>>> Thomas
>>>>>
>>>>>>>> Albert
>>>>>>> Thanks,
>>>>>>>
>>>>>>>
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