On 3/18/2019 7:45 PM, Henning Hraban Ramm wrote:
\externalfigure has a "color" parameter. It used to be possible to
colorize greyscale pictures with that, but it doesn’t work any more:
%%%
\setupcolors[state=start]
\setupexternalfigures[
location={local,global,default},
]
\starttext
\externalfigure[img/minidodo_g][width=.3\textwidth,color=red] % greyscale
\externalfigure[img/minidodo_b][width=.3\textwidth,color=green] % bitmap
\externalfigure[cow][width=.3\textwidth,color=blue] % vector
\stoptext
from one of the manuals ...
\starttext
\definecolor [my-blue] [c=1,m=.38,y=0,k=.64] % pms 2965 uncoated m
\definecolor [my-yellow] [c=0,m=.28,y=1,k=.06] % pms 124 uncoated m
\definespotcolor [my-blue-100] [my-blue] [p=1]
\definespotcolor [my-yellow-100] [my-yellow] [p=1]
\definespotcolor [my-blue-50] [my-blue] [p=.5]
\definespotcolor [my-yellow-50] [my-yellow] [p=.5]
\definemultitonecolor [my-mix] [my-blue=.12,my-yellow=.28]
[c=.1,m=.1,y=.3,k=.1]
\starttabulate[|T||]
\NC my-blue \NC \blackrule[color=my-blue,
width=.6\textwidth,height=5mm] \NC \NR
\NC my-blue-50 \NC \blackrule[color=my-blue-50,
width=.6\textwidth,height=5mm] \NC \NR
\NC my-blue-100 \NC \blackrule[color=my-blue-100,
width=.6\textwidth,height=5mm] \NC \NR
\NC my-yellow \NC \blackrule[color=my-yellow,
width=.6\textwidth,height=5mm] \NC \NR
\NC my-yellow-50 \NC \blackrule[color=my-yellow-50,
width=.6\textwidth,height=5mm] \NC \NR
\NC my-yellow-100 \NC
\blackrule[color=my-yellow-100,width=.6\textwidth,height=5mm] \NC \NR
\NC my-mix \NC \blackrule[color=my-mix,
width=.6\textwidth,height=5mm] \NC \NR
\stoptabulate
\useexternalfigure[demofig][mill.png][object=no,width=.2\textwidth]
\startcombination[4*1]
{\externalfigure[demofig]} {no color}
{\externalfigure[demofig][color=my-mix]} {indexed duotone}
{\externalfigure[demofig][color=my-blue-100]} {spot color}
{\externalfigure[demofig][color=my-yellow-100]} {spot color}
\stopcombination
\stoptext
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the
Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
