Context NTG schrieb am 10.03.19 um 16:59:
I am trying to get a metapost drawing as logo added to right upper
corner of a DIN B style letterhead, but it does not show up, just the
letter itself. Is there anything to change to the layers for the MP toe
reveal itself?
The letter module uses local settings for the page background to place
all the layer for the header, footer etc. and your own background setup
is overloaded by the module.
What you can do in this case is to use the predefined but unused
lettermain layer to place your logo in the background.
\usemodule[letter][style=dinb]
\startuseMPgraphic{mpglogo}
path p;
p := (0,0)--(100,0)--(100,100)--(0,100)--cycle ;
path q;
q := p cornered 30pt;
draw q withcolor black withpen pencircle scaled 7pt ;
\stopuseMPgraphic
\startsetups[letter:layer:lettermain]
\scale[width=25mm,height=25mm]{\useMPgraphic{mpglogo}}
\stopsetups
\setupletterlayer
[lettermain]
[alternative=setups,
x=160mm,
y=17mm]
\startletter
\dorecurse{3}{\input knuth \par}
\stopletter
Another way to place content in the background is to use the “paper” (or
“text”) background which isn’t used by the letter module and your
settings won’t be overloaded.
Wolfgang
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