[poppler] rendering pages from PDFs to PNG

[Albert Astals Cid]

A Dijous 16 Febrer 2006 14:55, Hans-Werner Hilse va escriure:
> Hi,
>
> I'm developing and maintaining a web based service that renders pages
> from PDFs online and places them as images into HTML pages. It's meant
> as a quick preview.
>
> While using ghostscript for this for a long time, I've recently
> switched to xpdf. I extended Splash output by another function that
> uses libpng in order to output single pages as PNGs. The patch is
> rather small.
>
> At that time, I hadn't yet known poppler. It seems to me that it is
> already able to do something like this via the functions that cairo
> offers (it seems to have PNG export). Sadly, I'm currently having a
> hard time to find examples of how to
> - use poppler in combination with cairo (but _not_ output to some X11
> window or do other toolkit integration)

Doing it using the Qt binding is trivial, but i assume you don't want that.

Albert

> - make cairo give me PNG output (which I can understand is a little OT
> here)
>
> If anybody is able to give me some hints, I'd be very grateful.
>
> OTOH, it wouldn't be too complicated to add PNG output via libpng to
> poppler's Splash, too. But I don't like that design, as it fiddles with
> internals taken over from xpdf and adds another dependency for
> specialized function in a very non-specialized abstraction layer
> (Splash). But if some people would like such an option, I can quickly
> adopt my patch. Feedback is welcome.
>
>
> -hwh
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