Re: Background image

[Peter Rolf <indiego@gmx.net>]

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Hi Pascal,

I spend more than one hour on this, to find a clean solution. So please
add this to the wiki.
And if you can, send my a copy of the nice background image (never mind
if not). I felt in love with this, while testing your example.

Anyhow, the cut markings are still lying under the picture (Hans?),
the rest should work. The automatical scaling of the image uses a tricky
method from this mailing list

http://archive.contextgarden.net/message/20070719.232314.12cb4f5f.en.html


Best wishes, Peter

BTW: do you set a bleed|crop-box?


Pascal de Bruijn schrieb:
> Hi,
> 
> I'm trying to layout a book for Lulu.com. I'm working with a 9"x6" paper
> size, which is going to be printed on 9.25"x6.25" stock paper to enable
> full bleed printing.
>
> I have managed to get a background image using a background layer.
> However, I don't seem to be able to get it to the right size.
> 
> Sample files:
> http://area42.pcode.nl/context/
> 
> In the PDF you can see, that I'm stuck with a white edge. I need the
> background picture to fill my entire page with no white left. I also
> need to crop marks to remain on top of the background image.
> 
> The supplied background image has the same height/width ratio as the
> stock page. However I would like TeX to stretch the ratio if necessary. 
> 
> I'd appreciate any suggestion on how to achieve this.
> 
> Regards,
> Pascal de Bruijn


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\definepapersize[Lulu-Print][width=6.00in,height=9.00in]
\definepapersize[Lulu-Stock][width=6.25in,height=9.25in]

%  [ paper ] [ printpaper ]
\setuppapersize[Lulu-Print][Lulu-Stock]
\setuplayout[location=middle,marking=on]
\setuppagenumbering[alternative=doublesided]
 
\setupbackgrounds[leftpage] [background={Watermark-Left,layer-with-marking}]% background doesn't work
\setupbackgrounds[rightpage][background={Watermark-Right,layer-with-marking}]

\definelayer[Watermark-Left]
[repeat=yes,width=\printpaperwidth,height=\printpaperheight,
 hoffset=-.5\dimexpr\printpaperwidth-\paperwidth,
 voffset=-.5\dimexpr\printpaperheight-\paperheight]
\definelayer[Watermark-Right]
[repeat=yes,width=\printpaperwidth,height=\printpaperheight,
 hoffset=-.5\dimexpr\printpaperwidth-\paperwidth,
 voffset=-.5\dimexpr\printpaperheight-\paperheight]


\setlayer[Watermark-Left][preset=topleft]
{\externalfigure[lowres][maxwidth=\printpaperwidth,maxheight=\printpaperheight,width=10in]}% width > maxwidth; value doesn't matter
\setlayer[Watermark-Right][preset=topleft]
{\externalfigure[lowres][maxwidth=\printpaperwidth,maxheight=\printpaperheight,width=10in]}

\starttext
\showframe

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\stoptext


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