[Gambas-user] Blurry text when PDF pages are rendered with gb.poppler and displayed with a DocumentView

[Fabien Bodard]

Can you make a short project that show us the way you use documents view
and poppler.

The image generated by gb.poppler have a static size. So zooming with
documents view lead to a blurry image. I think your problem come from
there...
I will try to give you a working example and see I something have to be done

Le dim. 4 févr. 2024 à 17:37, Claus Dietrich <claus.dietrich at freenet.de> a
écrit :

> Am 03.02.24 um 14:33 schrieb Benoît Minisini:
> > No idea, this is what the poppler API returns.
> >
> > If you don't specify a resolution in the Render() method, the
> > resolution stored in PdfDocument.Resolution will be used. Try with 300
> > dpi, it will be less blurry.
>
> As proposed I used a resolution of 300dpi with the gb.poppler version.
> The result was not competitive with the gb.pdf-version at a resolution
> of just 69.8 dpi (!). The high resolution further made the gb.poppler
> version far too slow and unusable.
>
> Here you can see a screenshot showing the difference in display quality
> at an identical rendering resolution and GUI size (upper=gb.poppler,
> lower=gb.pdf): https://magentacloud.de/s/Jj3WkmPmszrD8Yr
>
> I invested a few complete days for this but couldn't find any possible
> reason for that yet. The DocumentView is complex and I am lost when it
> comes to C-code (poppler API). I hope that you and/or Fabien can help.
>
> Best regards
>
> Claus
>
>
>
>
>
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>
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