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|
if not modules then modules = { } end modules ['mlib-pps'] = {
version = 1.001,
comment = "companion to mlib-ctx.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
-- todo: report max textexts
local format, gmatch, match, split = string.format, string.gmatch, string.match, string.split
local tonumber, type = tonumber, type
local round = math.round
local insert, concat = table.insert, table.concat
local Cs, Cf, C, Cg, Ct, P, S, V, Carg = lpeg.Cs, lpeg.Cf, lpeg.C, lpeg.Cg, lpeg.Ct, lpeg.P, lpeg.S, lpeg.V, lpeg.Carg
local lpegmatch = lpeg.match
local mplib, metapost, lpdf, context = mplib, metapost, lpdf, context
local texbox = tex.box
local copy_list = node.copy_list
local free_list = node.flush_list
local setmetatableindex = table.setmetatableindex
local sortedhash = table.sortedhash
local starttiming = statistics.starttiming
local stoptiming = statistics.stoptiming
local trace_runs = false trackers.register("metapost.runs", function(v) trace_runs = v end)
local trace_textexts = false trackers.register("metapost.textexts", function(v) trace_textexts = v end)
local trace_scripts = false trackers.register("metapost.scripts", function(v) trace_scripts = v end)
local report_metapost = logs.reporter("metapost")
local report_textexts = logs.reporter("metapost","textexts")
local report_scripts = logs.reporter("metapost","scripts")
local colors = attributes.colors
local rgbtocmyk = colors.rgbtocmyk or function() return 0,0,0,1 end
local cmyktorgb = colors.cmyktorgb or function() return 0,0,0 end
local rgbtogray = colors.rgbtogray or function() return 0 end
local cmyktogray = colors.cmyktogray or function() return 0 end
metapost.makempy = metapost.makempy or { nofconverted = 0 }
local makempy = metapost.makempy
local nooutercolor = "0 g 0 G"
local nooutertransparency = "/Tr0 gs" -- only when set
local outercolormode = 0
local outercolor = nooutercolor
local outertransparency = nooutertransparency
local innercolor = nooutercolor
local innertransparency = nooutertransparency
local pdfcolor = lpdf.color
local pdftransparency = lpdf.transparency
local registercolor = colors.register
local registerspotcolor = colors.registerspotcolor
local transparencies = attributes.transparencies
local registertransparency = transparencies.register
function metapost.setoutercolor(mode,colormodel,colorattribute,transparencyattribute)
-- has always to be called before conversion
-- todo: transparency (not in the mood now)
outercolormode = mode
if mode == 1 or mode == 3 then
-- inherit from outer (registered color)
outercolor = pdfcolor(colormodel,colorattribute) or nooutercolor
outertransparency = pdftransparency(transparencyattribute) or nooutertransparency
elseif mode == 2 then
-- stand alone (see m-punk.tex)
outercolor = ""
outertransparency = ""
else -- 0
outercolor = nooutercolor
outertransparency = nooutertransparency
end
innercolor = outercolor
innertransparency = outertransparency -- not yet used
end
local function checked_color_pair(color)
if not color then
return innercolor, outercolor
elseif outercolormode == 3 then
innercolor = color
return innercolor, innercolor
else
return color, outercolor
end
end
function metapost.colorinitializer()
innercolor = outercolor
innertransparency = outertransparency
return outercolor, outertransparency
end
--~
local specificationsplitter = lpeg.tsplitat(" ")
local colorsplitter = lpeg.tsplitter(":",tonumber) -- no need for :
local domainsplitter = lpeg.tsplitter(" ",tonumber)
local centersplitter = domainsplitter
local coordinatesplitter = domainsplitter
-- thanks to taco's reading of the postscript manual:
--
-- x' = sx * x + ry * y + tx
-- y' = rx * x + sy * y + ty
local nofshades = 0 -- todo: hash resources, start at 1000 in order not to clash with older
local function normalize(ca,cb)
if #cb == 1 then
if #ca == 4 then
cb[1], cb[2], cb[3], cb[4] = 0, 0, 0, 1-cb[1]
else
cb[1], cb[2], cb[3] = cb[1], cb[1], cb[1]
end
elseif #cb == 3 then
if #ca == 4 then
cb[1], cb[2], cb[3], cb[4] = rgbtocmyk(cb[1],cb[2],cb[3])
else
cb[1], cb[2], cb[3] = cmyktorgb(cb[1],cb[2],cb[3],cb[4])
end
end
end
-- todo: check for the same colorspace (actually a backend issue), now we can
-- have several similar resources
--
-- normalize(ca,cb) fails for spotcolors
local function spotcolorconverter(parent, n, d, p)
registerspotcolor(parent)
return pdfcolor(colors.model,registercolor(nil,'spot',parent,n,d,p)), outercolor
end
local commasplitter = lpeg.tsplitat(",")
local function checkandconvertspot(n_a,f_a,c_a,v_a,n_b,f_b,c_b,v_b)
-- must be the same but we don't check
local name = format("MpSh%s",nofshades)
local ca = lpegmatch(commasplitter,v_a)
local cb = lpegmatch(commasplitter,v_b)
if #ca == 0 or #cb == 0 then
return { 0 }, { 1 }, "DeviceGray", name
else
for i=1,#ca do ca[i] = tonumber(ca[i]) or 0 end
for i=1,#cb do cb[i] = tonumber(cb[i]) or 1 end
--~ spotcolorconverter(n_a,f_a,c_a,v_a) -- not really needed
return ca, cb, n_a or n_b, name
end
end
local function checkandconvert(ca,cb)
local name = format("MpSh%s",nofshades)
if not ca or not cb or type(ca) == "string" then
return { 0 }, { 1 }, "DeviceGray", name
else
if #ca > #cb then
normalize(ca,cb)
elseif #ca < #cb then
normalize(cb,ca)
end
local model = colors.model
if model == "all" then
model= (#ca == 4 and "cmyk") or (#ca == 3 and "rgb") or "gray"
end
if model == "rgb" then
if #ca == 4 then
ca = { cmyktorgb(ca[1],ca[2],ca[3],ca[4]) }
cb = { cmyktorgb(cb[1],cb[2],cb[3],cb[4]) }
elseif #ca == 1 then
local a, b = 1-ca[1], 1-cb[1]
ca = { a, a, a }
cb = { b, b, b }
end
return ca, cb, "DeviceRGB", name
elseif model == "cmyk" then
if #ca == 3 then
ca = { rgbtocmyk(ca[1],ca[2],ca[3]) }
cb = { rgbtocmyk(cb[1],cb[2],cb[3]) }
elseif #ca == 1 then
ca = { 0, 0, 0, ca[1] }
cb = { 0, 0, 0, ca[1] }
end
return ca, cb, "DeviceCMYK", name
else
if #ca == 4 then
ca = { cmyktogray(ca[1],ca[2],ca[3],ca[4]) }
cb = { cmyktogray(cb[1],cb[2],cb[3],cb[4]) }
elseif #ca == 3 then
ca = { rgbtogray(ca[1],ca[2],ca[3]) }
cb = { rgbtogray(cb[1],cb[2],cb[3]) }
end
-- backend specific (will be renamed)
return ca, cb, "DeviceGray", name
end
end
end
local current_format, current_graphic, current_initializations
metapost.multipass = false
local textexts = { }
local scratchbox = 0
local function freeboxes() -- todo: mp direct list ipv box
for n, box in next, textexts do
local tn = textexts[n]
if tn then
free_list(tn)
-- texbox[scratchbox] = tn
-- texbox[scratchbox] = nil -- this frees too
if trace_textexts then
report_textexts("freeing %s",n)
end
end
end
textexts = { }
end
metapost.resettextexts = freeboxes
function metapost.settext(box,slot)
textexts[slot] = copy_list(texbox[box])
texbox[box] = nil
-- this will become
-- textexts[slot] = texbox[box]
-- unsetbox(box)
end
function metapost.gettext(box,slot)
texbox[box] = copy_list(textexts[slot])
if trace_textexts then
report_textexts("putting %s in box %s",slot,box)
end
-- textexts[slot] = nil -- no, pictures can be placed several times
end
-- rather generic pdf, so use this elsewhere too it no longer pays
-- off to distinguish between outline and fill (we now have both
-- too, e.g. in arrows)
metapost.reducetogray = true
local models = { }
function models.all(cr)
local n = #cr
if n == 0 then
return checked_color_pair()
elseif metapost.reducetogray then
if n == 1 then
local s = cr[1]
return checked_color_pair(format("%.3f g %.3f G",s,s))
elseif n == 3 then
local r, g, b = cr[1], cr[2], cr[3]
if r == g and g == b then
return checked_color_pair(format("%.3f g %.3f G",r,r))
else
return checked_color_pair(format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b))
end
else
local c, m, y, k = cr[1], cr[2], cr[3], cr[4]
if c == m and m == y and y == 0 then
k = 1 - k
return checked_color_pair(format("%.3f g %.3f G",k,k))
else
return checked_color_pair(format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k))
end
end
elseif n == 1 then
local s = cr[1]
return checked_color_pair(format("%.3f g %.3f G",s,s))
elseif n == 3 then
local r, g, b = cr[1], cr[2], cr[3]
return checked_color_pair(format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b))
else
local c, m, y, k = cr[1], cr[2], cr[3], cr[4]
return checked_color_pair(format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k))
end
end
function models.rgb(cr)
local n = #cr
if n == 0 then
return checked_color_pair()
elseif metapost.reducetogray then
if n == 1 then
local s = cr[1]
checked_color_pair(format("%.3f g %.3f G",s,s))
elseif n == 3 then
local r, g, b = cr[1], cr[2], cr[3]
if r == g and g == b then
return checked_color_pair(format("%.3f g %.3f G",r,r))
else
return checked_color_pair(format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b))
end
else
local c, m, y, k = cr[1], cr[2], cr[3], cr[4]
if c == m and m == y and y == 0 then
k = 1 - k
return checked_color_pair(format("%.3f g %.3f G",k,k))
else
local r, g, b = cmyktorgb(c,m,y,k)
return checked_color_pair(format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b))
end
end
elseif n == 1 then
local s = cr[1]
return checked_color_pair(format("%.3f g %.3f G",s,s))
else
local r, g, b
if n == 3 then
r, g, b = cmyktorgb(cr[1],cr[2],cr[3],cr[4])
else
r, g, b = cr[1], cr[2], cr[3]
end
return checked_color_pair(format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b))
end
end
function models.cmyk(cr)
local n = #cr
if n == 0 then
return checked_color_pair()
elseif metapost.reducetogray then
if n == 1 then
local s = cr[1]
return checked_color_pair(format("%.3f g %.3f G",s,s))
elseif n == 3 then
local r, g, b = cr[1], cr[2], cr[3]
if r == g and g == b then
return checked_color_pair(format("%.3f g %.3f G",r,r))
else
local c, m, y, k = rgbtocmyk(r,g,b)
return checked_color_pair(format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k))
end
else
local c, m, y, k = cr[1], cr[2], cr[3], cr[4]
if c == m and m == y and y == 0 then
k = 1 - k
return checked_color_pair(format("%.3f g %.3f G",k,k))
else
return checked_color_pair(format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k))
end
end
elseif n == 1 then
local s = cr[1]
return checked_color_pair(format("%.3f g %.3f G",s,s))
else
local c, m, y, k
if n == 3 then
c, m, y, k = rgbtocmyk(cr[1],cr[2],cr[3])
else
c, m, y, k = cr[1], cr[2], cr[3], cr[4]
end
return checked_color_pair(format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k))
end
end
function models.gray(cr)
local n, s = #cr, 0
if n == 0 then
return checked_color_pair()
elseif n == 4 then
s = cmyktogray(cr[1],cr[2],cr[3],cr[4])
elseif n == 3 then
s = rgbtogray(cr[1],cr[2],cr[3])
else
s = cr[1]
end
return checked_color_pair(format("%.3f g %.3f G",s,s))
end
setmetatableindex(models, function(t,k)
local v = models.gray
t[k] = v
return v
end)
local function colorconverter(cs)
return models[colors.model](cs)
end
local btex = P("btex")
local etex = P(" etex")
local vtex = P("verbatimtex")
local ttex = P("textext")
local gtex = P("graphictext")
local multipass = P("forcemultipass")
local spacing = S(" \n\r\t\v")^0
local dquote = P('"')
local found, forced = false, false
local function convert(str)
found = true
return "rawtextext(\"" .. str .. "\")" -- centered
end
local function ditto(str)
return "\" & ditto & \""
end
local function register()
found = true
end
local function force()
forced = true
end
local texmess = (dquote/ditto + (1 - etex))^0
local function ignore(s)
report_metapost("ignoring verbatim tex: %s",s)
return ""
end
-- local parser = P {
-- [1] = Cs((V(2)/register + V(4)/ignore + V(3)/convert + V(5)/force + 1)^0),
-- [2] = ttex + gtex,
-- [3] = btex * spacing * Cs(texmess) * etex,
-- [4] = vtex * spacing * Cs(texmess) * etex,
-- [5] = multipass, -- experimental, only for testing
-- }
-- currently a a one-liner produces less code
-- textext.*(".*") can have "'s but tricky parsing as we can have concatenated strings
-- so this is something for a boring plain or train trip and we might assume proper mp
-- input anyway
local parser = Cs((
(ttex + gtex)/register
+ (btex * spacing * Cs(texmess) * etex)/convert
+ (vtex * spacing * Cs(texmess) * etex)/ignore
+ 1
)^0)
local function checktexts(str)
found, forced = false, false
return lpegmatch(parser,str), found, forced
end
metapost.checktexts = checktexts
local factor = 65536*(7227/7200)
function metapost.edefsxsy(wd,ht,dp) -- helper for figure
local hd = ht + dp
context.setvalue("sx",wd ~= 0 and factor/wd or 0)
context.setvalue("sy",hd ~= 0 and factor/hd or 0)
end
local function sxsy(wd,ht,dp) -- helper for text
local hd = ht + dp
return (wd ~= 0 and factor/wd) or 0, (hd ~= 0 and factor/hd) or 0
end
local no_trial_run = "mfun_trial_run := false ;"
local do_trial_run = "if unknown mfun_trial_run : boolean mfun_trial_run fi ; mfun_trial_run := true ;"
local text_data_template = "mfun_tt_w[%i] := %f ; mfun_tt_h[%i] := %f ; mfun_tt_d[%i] := %f ;"
local do_begin_fig = "; beginfig(1) ; "
local do_end_fig = "; endfig ;"
local do_safeguard = ";"
function metapost.textextsdata()
local t, nt, n = { }, 0, 0
for n, box in next, textexts do
if box then
local wd, ht, dp = box.width/factor, box.height/factor, box.depth/factor
if trace_textexts then
report_textexts("passed data %s: (%0.4f,%0.4f,%0.4f)",n,wd,ht,dp)
end
nt = nt + 1
t[nt] = format(text_data_template,n,wd,n,ht,n,dp)
else
break
end
end
return t
end
metapost.intermediate = metapost.intermediate or {}
metapost.intermediate.actions = metapost.intermediate.actions or {}
metapost.intermediate.needed = false
metapost.method = 1 -- 1:dumb 2:clever
-- maybe we can latelua the texts some day
local nofruns = 0 -- askedfig: "all", "first", number
local function checkaskedfig(askedfig) -- return askedfig, wrappit
if not askedfig then
return "direct", true
elseif askedfig == "all" then
return "all", false
elseif askedfig == "direct" then
return "all", true
else
askedfig = tonumber(askedfig)
if askedfig then
return askedfig, false
else
return "direct", true
end
end
end
function metapost.graphic_base_pass(mpsformat,str,initializations,preamble,askedfig)
nofruns = nofruns + 1
local askedfig, wrappit = checkaskedfig(askedfig)
local done_1, done_2, forced_1, forced_2
str, done_1, forced_1 = checktexts(str)
if not preamble or preamble == "" then
preamble, done_2, forced_2 = "", false, false
else
preamble, done_2, forced_2 = checktexts(preamble)
end
metapost.intermediate.needed = false
metapost.multipass = false -- no needed here
current_format, current_graphic, current_initializations = mpsformat, str, initializations or ""
if metapost.method == 1 or (metapost.method == 2 and (done_1 or done_2)) then
if trace_runs then
report_metapost("first run of job %s (asked: %s)",nofruns,tostring(askedfig))
end
-- first true means: trialrun, second true means: avoid extra run if no multipass
local flushed = metapost.process(mpsformat, {
preamble,
wrappit and do_begin_fig or "",
do_trial_run,
current_initializations,
do_safeguard,
current_graphic,
wrappit and do_end_fig or "",
}, true, nil, not (forced_1 or forced_2), false, askedfig)
if metapost.intermediate.needed then
for _, action in next, metapost.intermediate.actions do
action()
end
end
if not flushed or not metapost.optimize then
-- tricky, we can only ask once for objects and therefore
-- we really need a second run when not optimized
context.MPLIBextrapass(askedfig)
end
else
if trace_runs then
report_metapost("running job %s (asked: %s)",nofruns,tostring(askedfig))
end
metapost.process(mpsformat, {
preamble,
wrappit and do_begin_fig or "",
no_trial_run,
current_initializations,
do_safeguard,
current_graphic,
wrappit and do_end_fig or "",
}, false, nil, false, false, askedfig )
end
end
function metapost.graphic_extra_pass(askedfig)
if trace_runs then
report_metapost("second run of job %s (asked: %s)",nofruns,tostring(askedfig))
end
local askedfig, wrappit = checkaskedfig(askedfig)
metapost.process(current_format, {
wrappit and do_begin_fig or "",
no_trial_run,
concat(metapost.textextsdata()," ;\n"),
current_initializations,
do_safeguard,
current_graphic,
wrappit and do_end_fig or "",
}, false, nil, false, true, askedfig)
context.MPLIBresettexts() -- must happen afterwards
end
local start = [[\starttext]]
local preamble = [[\long\def\MPLIBgraphictext#1{\startTEXpage[scale=10000]#1\stopTEXpage}]]
local stop = [[\stoptext]]
function makempy.processgraphics(graphics)
if #graphics > 0 then
makempy.nofconverted = makempy.nofconverted + 1
starttiming(makempy)
local mpofile = tex.jobname .. "-mpgraph"
local mpyfile = file.replacesuffix(mpofile,"mpy")
local pdffile = file.replacesuffix(mpofile,"pdf")
local texfile = file.replacesuffix(mpofile,"tex")
io.savedata(texfile, { start, preamble, metapost.tex.get(), concat(graphics,"\n"), stop }, "\n")
local command = format("context --once %s %s", (tex.interactionmode == 0 and "--batchmode") or "", texfile)
os.execute(command)
if io.exists(pdffile) then
command = format("pstoedit -ssp -dt -f mpost %s %s", pdffile, mpyfile)
os.execute(command)
local result, r = { }, 0
if io.exists(mpyfile) then
local data = io.loaddata(mpyfile)
for figure in gmatch(data,"beginfig(.-)endfig") do
r = r + 1
result[r] = format("begingraphictextfig%sendgraphictextfig ;\n", figure)
end
io.savedata(mpyfile,concat(result,""))
end
end
stoptiming(makempy)
end
end
-- -- the new plugin handler -- --
local sequencers = utilities.sequencers
local appendgroup = sequencers.appendgroup
local appendaction = sequencers.appendaction
local resetter = nil
local analyzer = nil
local processor = nil
local resetteractions = sequencers.new { arguments = "t" }
local analyzeractions = sequencers.new { arguments = "object,prescript" }
local processoractions = sequencers.new { arguments = "object,prescript,before,after" }
appendgroup(resetteractions, "system")
appendgroup(analyzeractions, "system")
appendgroup(processoractions, "system")
-- later entries come first
--~ local scriptsplitter = Cf(Ct("") * (
--~ Cg(C((1-S("= "))^1) * S("= ")^1 * C((1-S("\n\r"))^0) * S("\n\r")^0)
--~ )^0, rawset)
local scriptsplitter = Ct ( Ct (
C((1-S("= "))^1) * S("= ")^1 * C((1-S("\n\r"))^0) * S("\n\r")^0
)^0 )
local function splitprescript(script)
local hash = lpegmatch(scriptsplitter,script)
for i=#hash,1,-1 do
local h = hash[i]
hash[h[1]] = h[2]
end
if trace_scripts then
report_scripts(table.serialize(hash,"prescript"))
end
return hash
end
-- -- not used:
--
-- local function splitpostscript(script)
-- local hash = lpegmatch(scriptsplitter,script)
-- for i=1,#hash do
-- local h = hash[i]
-- hash[h[1]] = h[2]
-- end
-- if trace_scripts then
-- report_scripts(table.serialize(hash,"postscript"))
-- end
-- return hash
-- end
function metapost.pluginactions(what,t,flushfigure) -- before/after object, depending on what
for i=1,#what do
local wi = what[i]
if type(wi) == "function" then
-- assume injection
flushfigure(t) -- to be checked: too many 0 g 0 G
t = { }
wi()
else
t[#t+1] = wi
end
end
return t
end
function metapost.resetplugins(t) -- intialize plugins, before figure
-- plugins can have been added
resetter = resetteractions .runner
analyzer = analyzeractions .runner
processor = processoractions .runner
-- let's apply one runner
resetter(t)
end
function metapost.analyzeplugins(object) -- each object (first pass)
local prescript = object.prescript -- specifications
if prescript and #prescript > 0 then
return analyzer(object,splitprescript(prescript))
end
end
function metapost.processplugins(object) -- each object (second pass)
local prescript = object.prescript -- specifications
if prescript and #prescript > 0 then
local before = { }
local after = { }
processor(object,splitprescript(prescript),before,after)
return #before > 0 and before, #after > 0 and after
else
local c = object.color
if c and #c > 0 then
local b, a = colorconverter(c)
return { b }, { a }
end
end
end
-- helpers
local basepoints = number.dimenfactors["bp"]
local function cm(object)
local op = object.path
local first, second, fourth = op[1], op[2], op[4]
local tx, ty = first.x_coord , first.y_coord
local sx, sy = second.x_coord - tx, fourth.y_coord - ty
local rx, ry = second.y_coord - ty, fourth.x_coord - tx
if sx == 0 then sx = 0.00001 end
if sy == 0 then sy = 0.00001 end
return sx,rx,ry,sy,tx,ty
end
-- color
local function cl_reset(t)
t[#t+1] = metapost.colorinitializer() -- only color
end
-- text
local tx_done = { }
local function tx_reset()
tx_done = { }
end
local function tx_analyze(object,prescript) -- todo: hash content and reuse them
local tx_stage = prescript.tx_stage
if tx_stage then
local tx_number = tonumber(prescript.tx_number)
if not tx_done[tx_number] then
tx_done[tx_number] = true
if trace_textexts then
report_textexts("setting %s %s (first pass)",tx_stage,tx_number)
end
local s = object.postscript or ""
local c = object.color -- only simple ones, no transparency
local a = prescript.tr_alternative
local t = prescript.tr_transparency
if not c then
-- no color
elseif #c == 1 then
if a and t then
s = format("\\directcolored[s=%f,a=%f,t=%f]%s",c[1],a,t,s)
else
s = format("\\directcolored[s=%f]%s",c[1],s)
end
elseif #c == 3 then
if a and t then
s = format("\\directcolored[r=%f,g=%f,b=%f,a=%f,t=%f]%s",c[1],c[2],c[3],a,t,s)
else
s = format("\\directcolored[r=%f,g=%f,b=%f]%s",c[1],c[2],c[3],s)
end
elseif #c == 4 then
if a and t then
s = format("\\directcolored[c=%f,m=%f,y=%f,k=%f,a=%f,t=%f]%s",c[1],c[2],c[3],c[4],a,t,s)
else
s = format("\\directcolored[c=%f,m=%f,y=%f,k=%f]%s",c[1],c[2],c[3],c[4],s)
end
end
context.MPLIBsettext(tx_number,s) -- combine colored in here, saves call
metapost.multipass = true
end
end
end
local function tx_process(object,prescript,before,after)
local tx_number = prescript.tx_number
if tx_number then
tx_number = tonumber(tx_number)
local tx_stage = prescript.tx_stage
if tx_stage == "final" then -- redundant test
if trace_textexts then
report_textexts("processing %s (second pass)",tx_number)
end
-- before[#before+1] = format("q %f %f %f %f %f %f cm",cm(object))
local sx,rx,ry,sy,tx,ty = cm(object)
before[#before+1] = function()
-- flush always happens, we can have a special flush function injected before
local box = textexts[tx_number]
if box then
-- context.MPLIBgettextscaled(tx_number,sxsy(box.width,box.height,box.depth))
context.MPLIBgettextscaledcm(tx_number,sx,rx,ry,sy,tx,ty,sxsy(box.width,box.height,box.depth))
else
report_textexts("unknown %s",tx_number)
end
end
-- before[#before+1] = "Q"
if not trace_textexts then
object.path = false -- else: keep it
end
object.color = false
object.grouped = true
end
end
end
-- graphics
local graphics = { }
function metapost.intermediate.actions.makempy()
if #graphics > 0 then
makempy.processgraphics(graphics)
graphics = { } -- ?
end
end
local function gt_analyze(object,prescript)
local gt_stage = prescript.gt_stage
if gt_stage == "trial" then
graphics[#graphics+1] = format("\\MPLIBgraphictext{%s}",object.postscript or "")
metapost.intermediate.needed = true
metapost.multipass = true
end
end
-- local function gt_process(object,prescript,before,after)
-- local gt_stage = prescript.gt_stage
-- if gt_stage == "final" then
-- end
-- end
-- shades
local function sh_process(object,prescript,before,after)
local sh_type = prescript.sh_type
if sh_type then
nofshades = nofshades + 1
local domain = lpegmatch(domainsplitter,prescript.sh_domain)
local centera = lpegmatch(centersplitter,prescript.sh_center_a)
local centerb = lpegmatch(centersplitter,prescript.sh_center_b)
--
local sh_color_a = prescript.sh_color_a or "1"
local sh_color_b = prescript.sh_color_b or "1"
local ca, cb, colorspace, name, separation
if prescript.sh_color == "into" and prescript.sp_name then
-- some spotcolor
local value_a, components_a, fractions_a, name_a
local value_b, components_b, fractions_b, name_b
for i=1,#prescript do
-- { "sh_color_a", "1" },
-- { "sh_color", "into" },
-- { "sh_radius_b", "0" },
-- { "sh_radius_a", "141.73225" },
-- { "sh_center_b", "425.19676 141.73225" },
-- { "sh_center_a", "425.19676 0" },
-- { "sh_factor", "1" },
local tag = prescript[i][1]
if not name_a and tag == "sh_color_a" then
value_a = prescript[i-5][2]
components_a = prescript[i-4][2]
fractions_a = prescript[i-3][2]
name_a = prescript[i-2][2]
elseif not name_b and tag == "sh_color_b" then
value_b = prescript[i-5][2]
components_b = prescript[i-4][2]
fractions_b = prescript[i-3][2]
name_b = prescript[i-2][2]
end
if name_a and name_b then
break
end
end
ca, cb, separation, name = checkandconvertspot(
name_a,fractions_a,components_a,value_a,
name_b,fractions_b,components_b,value_b
)
else
local colora = lpegmatch(colorsplitter,sh_color_a)
local colorb = lpegmatch(colorsplitter,sh_color_b)
ca, cb, colorspace, name = checkandconvert(colora,colorb)
end
if not ca or not cb then
ca, cb, colorspace, name = checkandconvert()
end
if sh_type == "linear" then
local coordinates = { centera[1], centera[2], centerb[1], centerb[2] }
lpdf.linearshade(name,domain,ca,cb,1,colorspace,coordinates,separation) -- backend specific (will be renamed)
elseif sh_type == "circular" then
local radiusa = tonumber(prescript.sh_radius_a)
local radiusb = tonumber(prescript.sh_radius_b)
local coordinates = { centera[1], centera[2], radiusa, centerb[1], centerb[2], radiusb }
lpdf.circularshade(name,domain,ca,cb,1,colorspace,coordinates,separation) -- backend specific (will be renamed)
else
-- fatal error
end
before[#before+1], after[#after+1] = "q /Pattern cs", format("W n /%s sh Q",name)
-- false, not nil, else mt triggered
object.colored = false
object.type = false
object.grouped = true
end
end
-- bitmaps
local function bm_process(object,prescript,before,after)
local bm_xresolution = prescript.bm_xresolution
if bm_xresolution then
before[#before+1] = format("q %f %f %f %f %f %f cm",cm(object))
before[#before+1] = function()
figures.bitmapimage {
xresolution = tonumber(bm_xresolution),
yresolution = tonumber(prescript.bm_yresolution),
width = 1/basepoints,
height = 1/basepoints,
data = object.postscript
}
end
before[#before+1] = "Q"
object.path = false
object.color = false
object.grouped = true
end
end
-- positions
local function ps_process(object,prescript,before,after)
local ps_label = prescript.ps_label
if ps_label then
local op = object.path
local first, third = op[1], op[3]
local x, y = first.x_coord, first.y_coord
local w, h = third.x_coord - x, third.y_coord - y
x = x - metapost.llx
y = metapost.ury - y
before[#before+1] = function()
context.MPLIBpositionwhd(ps_label,x,y,w,h)
end
object.path = false
end
end
-- figures
local function fg_process(object,prescript,before,after)
local fg_name = prescript.fg_name
if fg_name then
before[#before+1] = format("q %f %f %f %f %f %f cm",cm(object)) -- beware: does not use the cm stack
before[#before+1] = function()
context.MPLIBfigure(fg_name,prescript.fg_mask or "")
end
before[#before+1] = "Q"
object.path = false
object.grouped = true
end
end
-- color and transparency
local value = Cs ( (
(Carg(1) * C((1-P(","))^1)) / function(a,b) return format("%0.3f",a * tonumber(b)) end
+ P(","))^1
)
-- should be codeinjections
local t_list = attributes.list[attributes.private('transparency')]
local c_list = attributes.list[attributes.private('color')]
local function tr_process(object,prescript,before,after)
-- before can be shortcut to t
local tr_alternative = prescript.tr_alternative
if tr_alternative then
tr_alternative = tonumber(tr_alternative)
local tr_transparency = tonumber(prescript.tr_transparency)
before[#before+1] = format("/Tr%s gs",registertransparency(nil,tr_alternative,tr_transparency,true))
after[#after+1] = "/Tr0 gs" -- outertransparency
end
local cs = object.color
if cs and #cs > 0 then
local c_b, c_a
local sp_type = prescript.sp_type
if not sp_type then
c_b, c_a = colorconverter(cs)
elseif sp_type == "spot" or sp_type == "multitone" then
local sp_name = prescript.sp_name or "black"
local sp_fractions = prescript.sp_fractions or 1
local sp_components = prescript.sp_components or ""
local sp_value = prescript.sp_value or "1"
local cf = cs[1]
if cf ~= 1 then
-- beware, we do scale the spotcolors but not the alternative representation
sp_value = lpegmatch(value,sp_value,1,cf) or sp_value
end
c_b, c_a = spotcolorconverter(sp_name,sp_fractions,sp_components,sp_value)
elseif sp_type == "named" then
-- we might move this to another namespace .. also, named can be a spotcolor
-- so we need to check for that too ... also we need to resolve indirect
-- colors so we might need the second pass for this (draw dots with \MPcolor)
local sp_name = prescript.sp_name or "black"
if not tr_alternative then
-- todo: sp_name is not yet registered at this time
local t = t_list[sp_name] -- string or attribute
local v = t and attributes.transparencies.value(t)
if v then
before[#before+1] = format("/Tr%s gs",registertransparency(nil,v[1],v[2],true))
after[#after+1] = "/Tr0 gs" -- outertransparency
end
end
local c = c_list[sp_name] -- string or attribute
local v = c and attributes.colors.value(c)
if v then
-- all=1 gray=2 rgb=3 cmyk=4
local colorspace = v[1]
local f = cs[1]
if colorspace == 2 then
local s = f*v[2]
c_b, c_a = checked_color_pair(format("%.3f g %.3f G",s,s))
elseif colorspace == 3 then
local r, g, b = f*v[3], f*v[4], f*v[5]
c_b, c_a = checked_color_pair(format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b))
elseif colorspace == 4 or colorspace == 1 then
local c, m, y, k = f*v[6], f*v[7], f*v[8], f*v[9]
c_b, c_a = checked_color_pair(format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k))
else
local s = f*v[2]
c_b, c_a = checked_color_pair(format("%.3f g %.3f G",s,s))
end
end
--
end
if c_a and c_b then
before[#before+1] = c_b
after[#after+1] = c_a
end
end
end
-- layers (nasty: we need to keep the 'grouping' right
local function la_process(object,prescript,before,after)
local la_name = prescript.la_name
if la_name then
before[#before+1] = backends.codeinjections.startlayer(la_name)
insert(after,1,backends.codeinjections.stoplayer())
end
end
-- groups
local types = {
isolated
}
local function gr_process(object,prescript,before,after)
local gr_state = prescript.gr_state
if gr_state then
if gr_state == "start" then
local gr_type = utilities.parsers.settings_to_hash(prescript.gr_type)
before[#before+1] = function()
context.MPLIBstartgroup(
gr_type.isolated and 1 or 0,
gr_type.knockout and 1 or 0,
prescript.gr_llx,
prescript.gr_lly,
prescript.gr_urx,
prescript.gr_ury
)
end
elseif gr_state == "stop" then
after[#after+1] = function()
context.MPLIBstopgroup()
end
end
object.path = false
object.color = false
object.grouped = true
end
end
-- definitions
appendaction(resetteractions, "system",cl_reset)
appendaction(resetteractions, "system",tx_reset)
appendaction(processoractions,"system",gr_process)
appendaction(analyzeractions, "system",tx_analyze)
appendaction(analyzeractions, "system",gt_analyze)
appendaction(processoractions,"system",sh_process)
-- (processoractions,"system",gt_process)
appendaction(processoractions,"system",bm_process)
appendaction(processoractions,"system",tx_process)
appendaction(processoractions,"system",ps_process)
appendaction(processoractions,"system",fg_process)
appendaction(processoractions,"system",tr_process) -- last, as color can be reset
appendaction(processoractions,"system",la_process)
-- we're nice and set them already
resetter = resetteractions .runner
analyzer = analyzeractions .runner
processor = processoractions.runner
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