[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.

So you are writing an Okular clone? What is the plan for your program that 
Okular does not support?

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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