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%D \module
%D [ file=mp-asnc.mpiv,
%D version=2012.02.19, % was mp-core: 1999.08.01, anchoring
%D title=\CONTEXT\ \METAPOST\ graphics,
%D subtitle=anchored background macros,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
%D See anch-snc.mkxl for historic comments.
if known context_asnc : endinput ; fi ;
boolean context_asnc ; context_asnc := true ;
newscriptindex mfid_asnc_collect ; mfid_asnc_collect := scriptindex "asnc_collect" ; def asnc_collect (expr category,realpage,region) = runscript mfid_asnc_collect (category) (realpage) (region) enddef ;
newscriptindex mfid_asnc_extend ; mfid_asnc_extend := scriptindex "asnc_extend" ; def asnc_extend = runscript mfid_asnc_extend enddef ;
newscriptindex mfid_asnc_prune ; mfid_asnc_prune := scriptindex "asnc_prune" ; def asnc_prune = runscript mfid_asnc_prune enddef ;
newscriptindex mfid_asnc_collapse ; mfid_asnc_collapse := scriptindex "asnc_collapse" ; def asnc_collapse = runscript mfid_asnc_collapse enddef ;
newscriptindex mfid_asnc_getsize ; mfid_asnc_getsize := scriptindex "asnc_getsize" ; def asnc_getsize = runscript mfid_asnc_getsize enddef ;
newscriptindex mfid_asnc_getx ; mfid_asnc_getx := scriptindex "asnc_getx" ; def asnc_getx = runscript mfid_asnc_getx enddef ;
newscriptindex mfid_asnc_gety ; mfid_asnc_gety := scriptindex "asnc_gety" ; def asnc_gety = runscript mfid_asnc_gety enddef ;
newscriptindex mfid_asnc_getw ; mfid_asnc_getw := scriptindex "asnc_getw" ; def asnc_getw = runscript mfid_asnc_getw enddef ;
newscriptindex mfid_asnc_geth ; mfid_asnc_geth := scriptindex "asnc_geth" ; def asnc_geth = runscript mfid_asnc_geth enddef ;
newscriptindex mfid_asnc_getd ; mfid_asnc_getd := scriptindex "asnc_getd" ; def asnc_getd = runscript mfid_asnc_getd enddef ;
newscriptindex mfid_asnc_gettop ; mfid_asnc_gettop := scriptindex "asnc_gettop" ; def asnc_gettop (expr n) = (runscript mfid_asnc_gettop n) enddef ;
newscriptindex mfid_asnc_getbottom ; mfid_asnc_getbottom := scriptindex "asnc_getbottom"; def asnc_getbottom(expr n) = (runscript mfid_asnc_getbottom n) enddef ;
newscriptindex mfid_asnc_getkind ; mfid_asnc_getkind := scriptindex "asnc_getkind" ; def asnc_getkind (expr n) = (runscript mfid_asnc_getkind n) enddef ;
newscriptindex mfid_asnc_gettask ; mfid_asnc_gettask := scriptindex "asnc_gettask" ; def asnc_gettask (expr n) = (runscript mfid_asnc_gettask n) enddef ;
presetparameters "synchronizer" [
color = "darkgray", % default color
colors = {
"darkred"
"darkgreen"
"darkblue",
"darkyellow",
"darkmagenta",
"darkcyan",
"darkgray"
},
index = 1,
hoffset = 0,
voffset = 0,
region = "",
width = 1cm,
extend = false,
prune = true,
collapse = true,
draw = true,
fill = true,
page = "auto", % yes | clip | auto | no
] ;
def lmt_synchronizer = applyparameters "synchronizer" "lmt_do_synchronizer" enddef ;
vardef lmt_do_synchronizer =
pushparameters "synchronizer" ;
begingroup ;
save index, dx, dy, width, count, page, region, paths, tasks, kinds ;
path paths[] ; numeric tasks[] ; numeric kinds[] ;
%
numeric index ; index := getparameter "index" ;
numeric dx ; dx := getparameter "hoffset" ;
numeric dy ; dy := getparameter "voffset" ;
numeric width ; width := getparameter "width" ;
numeric count ; count := 0 ;
string page ; page := getparameter "page" ;
string region ; region := getparameter "region" ;
%
count := asnc_collect(index,RealPageNumber,region) ;
if getparameter "extend" :
count := asnc_extend ; % to top of text area
fi ;
if getparameter "prune" :
count := asnc_prune ; % clip top / bottom
fi ;
if getparameter "collapse" :
count := asnc_collapse ;
fi ;
if count > 0 :
save k, t, b, l, r, y ;
numeric l ; l := dx ;
numeric r ; r := dx + width ;
numeric y ; y := asnc_gety + dy ;
for i=1 upto count :
k := asnc_getkind(i) ;
t := asnc_gettop(i) - y ;
b := asnc_getbottom(i) - y ;
paths[i] = ((l,t) -- (r,t) -- (r,b) -- (l,b) -- cycle) ;
tasks[i] = asnc_gettask(i) ;
kinds[i] = k ;
endfor ;
if page = "auto" :
page := if region == "" : "clip" else : "no" fi ;
fi ;
if (page = "clip") or (page = "yes") :
StartPage ;
fi ;
if getparameter "fill" :
for i=1 upto count :
fill paths[i]
withcolor getparameterdefault "colors" i (getparameter "color") ;
;
endfor ;
fi ;
if getparameter "draw" :
for i=1 upto count :
draw paths[i]
withcolor getparameterdefault "colors" i (getparameter "color") ;
;
endfor ;
fi ;
if page = "clip" :
clip currentpicture to Page ;
setbounds currentpicture to Page ;
fi ;
if (page = "clip") or (page = "yes") :
StopPage ;
fi ;
fi ;
endgroup ;
popparameters ;
enddef ;
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