[poppler] Poppler in android via JNI

[Albert Astals Cid]

A Divendres, 13 de novembre de 2009, Arthur Peters va escriure:
> Response interlaced.
> -Arthur
> 
> On Fri, Nov 13, 2009 at 1:15 PM, Albert Astals Cid <aacid at kde.org> wrote:
> > A Divendres, 13 de novembre de 2009, Arthur Peters va escriure:
> > > So I want to use my android phone as an ebook reader and all the PDF
> > >  viewers for the platform seem to suck badly. So I want to port poppler
> >
> > and
> >
> > >  write a simple front end for it.
> > >
> > > I have seen that this has been thought about ("Java/JNI-based frontend
> >
> > for
> >
> > > Android" in TODO) however I see no technical discussion. I want to
> > > start such a discussion so that I can get some guidance from people who
> > > know poppler better. The questions I can think of now are:
> > >
> > > * Should I just render the PDF down to a bitmap in C and then pass that
> >
> > to
> >
> > > Java and draw it to the screen (basically just modify the
> >
> > ImageOutputDev)?
> >
> > > Or should I try to use the android native drawing functions to draw the
> > > lines and glyphs and stuff? (or even use GLES from C)
> >
> > Doing a Java/AndroidOutputDev is probably better but much more difficult
> > than
> > just using the output of SplashOutputDev or CairoOutputDev (provided you
> > have
> > the dependencies for those in Android)
> 
> OK. I could in theory build Cairo for Android, but I'd rather not. It
>  looked to me like ImageOutputDev from the utils directory could create
>  bitmaps without many dependencies. Am I missing something?

Yes, ImageOutputDev obtains "images" inside the PDF, not a image of the PDF, 
for that you either need SplashOutputDev or CairoOutputDev. SplashOutputDev 
needs freetype and fontconfig, CairoOutputDev adds Cairo on top of that.

Albert