[Okular-devel] Regarding okular generators

[Albert Astals Cid]

El Diumenge, 30 de desembre de 2012, a les 00:30:41, Jaydeep Solanki va 
escriure:
> I'm aware about Textpage algorithms that regardless of the generator, makes
> text selection work properly in column layout.
> I'm not asking it for okular, I'm asking for personal use, as I was trying
> out Poppler, I made a small app that currently can open pdf files, while I
> was working on the text selection in column layout, I thought that if all
> the libs generate text in the correct order then there is no need for
> coding the algorithm to arrange text. In future I'm planning to add support
> for other formats, so I need to know if the algorithm is needed.

The thing is, why write the column sorting algorithm in each and every of the 
libraries if you can have it just in one place?

Cheers,
  Albert

> 
> Jaydeep
> 
> On Sat, Dec 29, 2012 at 11:22 PM, Albert Astals Cid <aacid at kde.org> wrote:
> > El Dissabte, 29 de desembre de 2012, a les 22:56:12, Jaydeep Solanki va
> > 
> > escriure:
> > > As you might be knowing that Poppler::Page::textList() generates text in
> > > the correct order (i.e. left to right). Now poppler not only generates
> > > it
> > > in the correct order but it also considers the layout, for example in a
> > 
> > two
> > 
> > > column document, it follows the column layout while indexing the text.
> > > [image: Inline image 2]
> > > 
> > > just of example consider the image above, see the selection, poppler
> > > doesn't generate textList() in that order, it generates the textList()
> > > as
> > > shown in the below image,
> > > 
> > > [image: Inline image 3]
> > > So my question is do all the libraries that the generators of okular
> > > use,
> > > generate text in the proper order considering the layout ?
> > 
> > That doesn't matter, Textpage algorithms "should" correctly arrange text
> > in
> > columns (as correctly as the algorithm in there works).
> > 
> > Have you found any particular problem?
> > 
> > Albert
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