[poppler] pdftotext font information

[Adam Reichold]

Hello mpsuzuki,

attached is a version of your patch with some inline comments.

Generally speaking, I would say that some well-defined format like JSON
or YAML would be preferable to the ad-hoc encoding?

Best regards,
Adam

Am 03.05.2018 um 13:50 schrieb suzuki toshiya:
> Current poppler-dump (a testing tool of cpp-frontend) has no feature to
> demonstrate per-character bbox feature.
> Attached patch adds the option to demonstrate it (I'm not saying "this is ready
> to use, please use", I want to understand your request and whether existing
> features could cover some part of your requests).
> 
> The patched poppler-dump can work like this:
> 
> $ cpp/tests/poppler-dump --show-glyph-list test.pdf
> Page 1/1:
> ---
> [Please] @ ( x=72 y=72.624 w=61.32 h=21.6 )
>         [0] @ ( x=72 y=72.624 w=13.344 h=21.6 )
>         [1] @ ( x=85.344 y=72.624 w=6.672 h=21.6 )
>         [2] @ ( x=92.016 y=72.624 w=10.656 h=21.6 )
>         [3] @ ( x=102.672 y=72.624 w=10.656 h=21.6 )
>         [4] @ ( x=113.328 y=72.624 w=9.336 h=21.6 )
>         [5] @ ( x=122.664 y=72.624 w=10.656 h=21.6 )
> [wait...] @ ( x=139.32 y=72.624 w=59.328 h=21.6 )
>         [0] @ ( x=139.32 y=72.624 w=17.328 h=21.6 )
>         [1] @ ( x=156.648 y=72.624 w=10.656 h=21.6 )
>         [2] @ ( x=167.304 y=72.624 w=6.672 h=21.6 )
>         [3] @ ( x=173.976 y=72.624 w=6.672 h=21.6 )
>         [4] @ ( x=180.648 y=72.624 w=6 h=21.6 )
>         [5] @ ( x=186.648 y=72.624 w=6 h=21.6 )
>         [6] @ ( x=192.648 y=72.624 w=6 h=21.6 )
> [If] @ ( x=72 y=112.428 w=7.992 h=10.8 )
>         [0] @ ( x=72 y=112.428 w=3.996 h=10.8 )
>         [1] @ ( x=75.996 y=112.428 w=3.996 h=10.8 )
> [this] @ ( x=82.992 y=112.428 w=17.34 h=10.8 )
>         [0] @ ( x=82.992 y=112.428 w=3.336 h=10.8 )
>         [1] @ ( x=86.328 y=112.428 w=6 h=10.8 )
>         [2] @ ( x=92.328 y=112.428 w=3.336 h=10.8 )
>         [3] @ ( x=95.664 y=112.428 w=4.668 h=10.8 )
> ...
> 
> Regards,
> mpsuzuki
> 
> suzuki toshiya wrote:
>> Dear obsidian,
>>
>> Too many posts about similar issues :-)
>> I'm not sure whether poppler maintainers are interested in the enhancement of
>> pdftotext,
>> but recently Jeroen and I were working with cpp-frontend to have similar features.
>>
>> in the latest version of poppler,
>> cpp-frontend has a feature to retrieve the list of words with bounding box,
>> and it can retrieve the bounding box for each glyph in the word.
>>
>> --
>>
>> also I proposed a patch to retrieve the font family and point size:
>> https://lists.freedesktop.org/archives/poppler/2018-April/013035.html
>>
>> it might be waiting the maintainers review. the discussion and result would be
>> found at here:
>> https://github.com/ropensci/pdftools/issues/29
>>
>> --
>>
>>> - style, i.e. none, bold, italic
>>
>> if the document producer has a bold font and used in the document, aslike
>> Helvetica-Bold,
>> it would be found by the family name.
>> but if the document producer has no bold font and let the word processor
>> software synthesize the embolden fonts,
>> it would be difficult for the PDF renderer to recognize it as embolden font,
>> because the embolding is done by showing same glyph with subtle shifting.
>> Simple PDF renderers would be unable to distinguish "normal font but layered"
>> and "embolden font".
>>
>> Regards,
>> mpsuzuki
>>
>> obsidian . wrote:
>>> I'm using "pdftotext -bbox file.pdf" to convert a pdf file into html.
>>>
>>> Here's a sample line from the output:
>>>     <word xMin="359.852025" yMin="462.548936" xMax="365.689478" yMax="467.681498">foo</word>
>>>
>>> Is there a way to get font information for every word like:
>>> - font family, e.g. Verdana
>>> - style, i.e. none, bold, italic
>>> - size, e.g. font size 9
>>>
>>> I'm using pdftotext version 0.55.0 on Windows.
>>>
>>>
>>
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>> poppler at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/poppler
>>
>>
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