On Mon, 29 Aug 2005 04:29 pm, Jeremias Maerki wrote:
> I tried to reproduce that but didn't really manage though I found
> other problems related to the positioning of background images. Looks
> like someone will eventually need to invest some more time there
> (it's not a priority for me right now). I can fix/review the
> renderers if someone provides test cases though.
>
OK, I'll keep that on my todo list for the time being. Can you please 
document what other problems related to background positioning you 
found?

> On 29.08.2005 08:08:29 Manuel Mall wrote:
> > While testing / implementing padding and background-image support
> > for table cells I think I have come across a bug with the PDF
> > renderer. Unfortunately I cannot provide a testcase as one would
> > need my version of fop for this. Any way, it is along the following
> > lines: Background images on absolute positioned blocks (I am
> > talking area tree here) are incorrectly offset, that is the
> > left-position and top-position traits are applied multiple times.
> > It works ok for blocks that are viewports (as created from
> > fo:block-container) but for "normal" absolute blocks as generated
> > for table cells it doesn't.
> >
> > I made the following change to the PDFRenderer, that is commented
> > out the offset calculation involving currentIPPosition /
> > currentBPPosition as these offsets are already included in x and y.
> >
> >     protected void placeImage(float x, float y, float w, float h,
> > int xobj) {
> >         saveGraphicsState();
> >         currentStream.add(w + " 0 0 "
> >                           + -h + " "
> >                           + (/*currentIPPosition / 1000f*/ + x) + "
> > " + (/*currentBPPosition / 1000f*/ + h + y) + " cm\n" + "/Im" +
> > xobj + " Do\n"); restoreGraphicsState();
> >     }
> >
> > This seems to work but I am not sure about any unforeseen side
> > effects. Someone with a better grasp of the PDFRenderer than me may
> > want to take a look at this please.
> >
> > Manuel
>
> Jeremias Maerki
Manuel

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