On 05/30/2013 12:24 AM, Albert Astals Cid wrote:
El Dijous, 30 de maig de 2013, a les 00:12:12, Mihai Niculescu va escriure:
On 05/30/2013 12:01 AM, Albert Astals Cid wrote:
El Dimecres, 29 de maig de 2013, a les 23:57:44, Mihai Niculescu va
escriure:
mail list included. Replay below.
On 05/29/2013 11:39 PM, Albert Astals Cid wrote:
El Dimecres, 29 de maig de 2013, a les 21:54:43, Mihai Niculescu va
escriure:
Hi,
I am trying to get the bounding box of all content in a page(text,
images, tables, etc) in poppler, but I can’t figure this out.
For example, I want to dublicate the result given by ghostscript:
gs -sDEVICE=bbox golfer.ps
prints out
%%BoundingBox: 0 25 583 732
%%HiResBoundingBox: 0.808497 25.009496 582.994503
731.809445
How can this be done with poppler?
Is that the "real" bounding box or one of the pdf boxes (crop, bleed,
etc)?
Cheers,
Albert
Thanks,
Mihai
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Not the pdf boxes. I mean the union of all bounding boxes of all
elements (text, images, tables, glyphs, etc) in pdf. Let me explain more.
I tried to loop over all QList<TextBox> but these do not include other
glyphs in the pdf (greek sigma - for summation in latex) or maybe
poppler does not see it as a text:
QList<Poppler::TextBox*> wholetext = pdfPage->textList();
//float minX, maxX, minY, maxY;
QRectF unitedTextbbox, textbbox;
for(int i=0; i<wholetext.size(); ++i){
Poppler::TextBox* textBox = wholetext.at(i);
textbbox = textBox->boundingBox();
if(i==0){
unitedTextbbox=textbbox;
}else{
unitedTextbbox=unitedTextbbox.united(textbbox);
}
}
This works great when there is simple text in pdf, but when there are
other symbols it does not. I need something like the example above but
to include all elements in the pdf. I'll go and use only poppler
(without qt4 wrapper) if I can have this.
Can't think on how to get what you want easily to be honest.
As a quick solution you can render the page at a relatively low res and
work the bbox from it, just check if the 4 corners are the same color and
iterate on that.
Cheers,
Albert
That is a way I don't like it and hope not to do it. Can you give me
some directions on how should I approach this problem?
Implement an outputdev and keep track of the bounding boxes there is the only
way i can think of.
Cheers,
Albert
Thanks, I'll look into this! This seems to be just as in gs or muPDF:
creation an output device to compute the bounding boxes. Too bad poppler
doesn't have already one implemented.
Cheers,
Mihai
Cheers,
Mihai
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_______________________________________________
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[email protected]
http://lists.freedesktop.org/mailman/listinfo/poppler
_______________________________________________
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[email protected]
http://lists.freedesktop.org/mailman/listinfo/poppler
_______________________________________________
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http://lists.freedesktop.org/mailman/listinfo/poppler
_______________________________________________
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