-- -- This is file `luamplib.lua', -- generated with the docstrip utility. -- -- The original source files were: -- -- luamplib.dtx (with options: `lua') -- -- See source file 'luamplib.dtx' for licencing and contact information. -- luatexbase.provides_module { name = "luamplib", version = "2.20.5", date = "2020/02/24", description = "Lua package to typeset Metapost with LuaTeX's MPLib.", } local format, abs = string.format, math.abs local err = function(...) return luatexbase.module_error ("luamplib", format(...)) end local warn = function(...) return luatexbase.module_warning("luamplib", format(...)) end local info = function(...) return luatexbase.module_info ("luamplib", format(...)) end luamplib = luamplib or { } local luamplib = luamplib luamplib.showlog = luamplib.showlog or false luamplib.lastlog = "" local tableconcat = table.concat local texsprint = tex.sprint local textprint = tex.tprint local texget = tex.get local texgettoks = tex.gettoks local texgetbox = tex.getbox local texruntoks = tex.runtoks if not texruntoks then err("Your LuaTeX version is too old. Please upgrade it to the latest") end local mplib = require ('mplib') local kpse = require ('kpse') local lfs = require ('lfs') local lfsattributes = lfs.attributes local lfsisdir = lfs.isdir local lfsmkdir = lfs.mkdir local lfstouch = lfs.touch local ioopen = io.open local file = file or { } local replacesuffix = file.replacesuffix or function(filename, suffix) return (filename:gsub("%.[%a%d]+$","")) .. "." .. suffix end local stripsuffix = file.stripsuffix or function(filename) return (filename:gsub("%.[%a%d]+$","")) end local is_writable = file.is_writable or function(name) if lfsisdir(name) then name = name .. "/_luam_plib_temp_file_" local fh = ioopen(name,"w") if fh then fh:close(); os.remove(name) return true end end end local mk_full_path = lfs.mkdirs or function(path) local full = "" for sub in path:gmatch("(/*[^\\/]+)") do full = full .. sub lfsmkdir(full) end end local luamplibtime = kpse.find_file("luamplib.lua") luamplibtime = luamplibtime and lfsattributes(luamplibtime,"modification") local currenttime = os.time() local outputdir if lfstouch then local texmfvar = kpse.expand_var('$TEXMFVAR') if texmfvar and texmfvar ~= "" and texmfvar ~= '$TEXMFVAR' then for _,dir in next, texmfvar:explode(os.type == "windows" and ";" or ":") do if not lfsisdir(dir) then mk_full_path(dir) end if is_writable(dir) then local cached = format("%s/luamplib_cache",dir) lfsmkdir(cached) outputdir = cached break end end end end if not outputdir then outputdir = "." for _,v in ipairs(arg) do local t = v:match("%-output%-directory=(.+)") if t then outputdir = t break end end end function luamplib.getcachedir(dir) dir = dir:gsub("##","#") dir = dir:gsub("^~", os.type == "windows" and os.getenv("UserProfile") or os.getenv("HOME")) if lfstouch and dir then if lfsisdir(dir) then if is_writable(dir) then luamplib.cachedir = dir else warn("Directory '"..dir.."' is not writable!") end else warn("Directory '"..dir.."' does not exist!") end end end local noneedtoreplace = { ["boxes.mp"] = true, -- ["format.mp"] = true, ["graph.mp"] = true, ["marith.mp"] = true, ["mfplain.mp"] = true, ["mpost.mp"] = true, ["plain.mp"] = true, ["rboxes.mp"] = true, ["sarith.mp"] = true, ["string.mp"] = true, -- ["TEX.mp"] = true, ["metafun.mp"] = true, ["metafun.mpiv"] = true, ["mp-abck.mpiv"] = true, ["mp-apos.mpiv"] = true, ["mp-asnc.mpiv"] = true, ["mp-bare.mpiv"] = true, ["mp-base.mpiv"] = true, ["mp-blob.mpiv"] = true, ["mp-butt.mpiv"] = true, ["mp-char.mpiv"] = true, ["mp-chem.mpiv"] = true, ["mp-core.mpiv"] = true, ["mp-crop.mpiv"] = true, ["mp-figs.mpiv"] = true, ["mp-form.mpiv"] = true, ["mp-func.mpiv"] = true, ["mp-grap.mpiv"] = true, ["mp-grid.mpiv"] = true, ["mp-grph.mpiv"] = true, ["mp-idea.mpiv"] = true, ["mp-luas.mpiv"] = true, ["mp-mlib.mpiv"] = true, ["mp-node.mpiv"] = true, ["mp-page.mpiv"] = true, ["mp-shap.mpiv"] = true, ["mp-step.mpiv"] = true, ["mp-text.mpiv"] = true, ["mp-tool.mpiv"] = true, } luamplib.noneedtoreplace = noneedtoreplace local function replaceformatmp(file,newfile,ofmodify) local fh = ioopen(file,"r") if not fh then return file end local data = fh:read("*all"); fh:close() fh = ioopen(newfile,"w") if not fh then return file end fh:write( "let normalinfont = infont;\n", "primarydef str infont name = rawtextext(str) enddef;\n", data, "vardef Fmant_(expr x) = rawtextext(decimal abs x) enddef;\n", "vardef Fexp_(expr x) = rawtextext(\"$^{\"&decimal x&\"}$\") enddef;\n", "let infont = normalinfont;\n" ); fh:close() lfstouch(newfile,currenttime,ofmodify) return newfile end local name_b = "%f[%a_]" local name_e = "%f[^%a_]" local btex_etex = name_b.."btex"..name_e.."%s*(.-)%s*"..name_b.."etex"..name_e local verbatimtex_etex = name_b.."verbatimtex"..name_e.."%s*(.-)%s*"..name_b.."etex"..name_e local function replaceinputmpfile (name,file) local ofmodify = lfsattributes(file,"modification") if not ofmodify then return file end local cachedir = luamplib.cachedir or outputdir local newfile = name:gsub("%W","_") newfile = cachedir .."/luamplib_input_"..newfile if newfile and luamplibtime then local nf = lfsattributes(newfile) if nf and nf.mode == "file" and ofmodify == nf.modification and luamplibtime < nf.access then return nf.size == 0 and file or newfile end end if name == "format.mp" then return replaceformatmp(file,newfile,ofmodify) end local fh = ioopen(file,"r") if not fh then return file end local data = fh:read("*all"); fh:close() local count,cnt = 0,0 data, cnt = data:gsub(btex_etex, "btex %1 etex ") -- space count = count + cnt data, cnt = data:gsub(verbatimtex_etex, "verbatimtex %1 etex;") -- semicolon count = count + cnt if count == 0 then noneedtoreplace[name] = true fh = ioopen(newfile,"w"); if fh then fh:close() lfstouch(newfile,currenttime,ofmodify) end return file end fh = ioopen(newfile,"w") if not fh then return file end fh:write(data); fh:close() lfstouch(newfile,currenttime,ofmodify) return newfile end local mpkpse = kpse.new(arg[0], "mpost") local special_ftype = { pfb = "type1 fonts", enc = "enc files", } local function finder(name, mode, ftype) if mode == "w" then return name else ftype = special_ftype[ftype] or ftype local file = mpkpse:find_file(name,ftype) if file then if not lfstouch or ftype ~= "mp" or noneedtoreplace[name] then return file end return replaceinputmpfile(name,file) end return mpkpse:find_file(name, name:match("%a+$")) end end luamplib.finder = finder if tonumber(mplib.version()) <= 1.50 then err("luamplib no longer supports mplib v1.50 or lower. ".. "Please upgrade to the latest version of LuaTeX") end local preamble = [[ boolean mplib ; mplib := true ; let dump = endinput ; let normalfontsize = fontsize; input %s ; ]] local function luamplibresetlastlog() luamplib.lastlog = "" end local function reporterror (result) if not result then err("no result object returned") else local t, e, l = result.term, result.error, result.log local log = t or l or "no-term" log = log:gsub("^%s+","\n") luamplib.lastlog = luamplib.lastlog .. "\n" .. (l or t or "no-log") if result.status > 0 then warn("%s",log) if result.status > 1 then err("%s",e or "see above messages") end end return log end end local function luamplibload (name) local mpx = mplib.new { ini_version = true, find_file = luamplib.finder, make_text = luamplib.maketext, run_script = luamplib.runscript, math_mode = luamplib.numbersystem, extensions = 1, } local preamble = preamble .. luamplib.mplibcodepreamble if luamplib.legacy_verbatimtex then preamble = preamble .. luamplib.legacyverbatimtexpreamble end if luamplib.textextlabel then preamble = preamble .. luamplib.textextlabelpreamble end local result if not mpx then result = { status = 99, error = "out of memory"} else result = mpx:execute(format(preamble, replacesuffix(name,"mp"))) end reporterror(result) return mpx, result end local currentformat = "plain" local function setformat (name) currentformat = name end luamplib.setformat = setformat local function process_indeed (mpx, data) local converted, result = false, {} if mpx and data then result = mpx:execute(data) local log = reporterror(result) if log then if luamplib.showlog then info("%s",luamplib.lastlog) luamplibresetlastlog() elseif result.fig then if log:find("\n>>") then info("%s",log) end converted = luamplib.convert(result) else info("%s",log) warn("No figure output. Maybe no beginfig/endfig") end end else err("Mem file unloadable. Maybe generated with a different version of mplib?") end return converted, result end luamplib.codeinherit = false local mplibinstances = {} local function process (data) local standalone = not luamplib.codeinherit local currfmt = currentformat .. (luamplib.numbersystem or "scaled") .. tostring(luamplib.textextlabel) .. tostring(luamplib.legacy_verbatimtex) local mpx = mplibinstances[currfmt] if mpx and standalone then mpx:finish() end if standalone or not mpx then mpx = luamplibload(currentformat) mplibinstances[currfmt] = mpx end return process_indeed(mpx, data) end local catlatex = luatexbase.registernumber("catcodetable@latex") local catat11 = luatexbase.registernumber("catcodetable@atletter") local function run_tex_code (str, cat) cat = cat or catlatex texruntoks(function() texsprint(cat, str) end) end local tex_box_id = 2047 local factor = 65536*(7227/7200) local textext_fmt = [[image(addto currentpicture doublepath unitsquare ]].. [[xscaled %f yscaled %f shifted (0,-%f) ]].. [[withprescript "mplibtexboxid=%i:%f:%f")]] local function process_tex_text (str) if str then tex_box_id = tex_box_id + 1 local global = luamplib.globaltextext and "\\global" or "" run_tex_code(format("%s\\setbox%i\\hbox{%s}", global, tex_box_id, str)) local box = texgetbox(tex_box_id) local wd = box.width / factor local ht = box.height / factor local dp = box.depth / factor return textext_fmt:format(wd, ht+dp, dp, tex_box_id, wd, ht+dp) end return "" end local mplibcolor_fmt = [[\begingroup\let\XC@mcolor\relax]].. [[\def\set@color{\global\mplibtmptoks\expandafter{\current@color}}]].. [[\color %s \endgroup]] local function process_color (str) if str then if not str:find("{.-}") then str = format("{%s}",str) end run_tex_code(mplibcolor_fmt:format(str), catat11) return format('1 withprescript "MPlibOverrideColor=%s"', texgettoks"mplibtmptoks") end return "" end local function process_dimen (str) if str then str = str:gsub("{(.+)}","%1") run_tex_code(format([[\mplibtmptoks\expandafter{\the\dimexpr %s\relax}]], str)) return format("begingroup %s endgroup", texgettoks"mplibtmptoks") end return "" end local function process_verbatimtex_text (str) if str then run_tex_code(str) end return "" end local tex_code_pre_mplib = {} luamplib.figid = 1 luamplib.in_the_fig = false local function legacy_mplibcode_reset () tex_code_pre_mplib = {} luamplib.figid = 1 end local function process_verbatimtex_prefig (str) if str then tex_code_pre_mplib[luamplib.figid] = str end return "" end local function process_verbatimtex_infig (str) if str then return format('special "postmplibverbtex=%s";', str) end return "" end local runscript_funcs = { luamplibtext = process_tex_text, luamplibcolor = process_color, luamplibdimen = process_dimen, luamplibprefig = process_verbatimtex_prefig, luamplibinfig = process_verbatimtex_infig, luamplibverbtex = process_verbatimtex_text, } mp = mp or {} local mp = mp mp.mf_path_reset = mp.mf_path_reset or function() end mp.mf_finish_saving_data = mp.mf_finish_saving_data or function() end local function mpprint(buffer,...) for i=1,select("#",...) do local value = select(i,...) if value ~= nil then local t = type(value) if t == "number" then buffer[#buffer+1] = format("%.16f",value) elseif t == "string" then buffer[#buffer+1] = value elseif t == "table" then buffer[#buffer+1] = "(" .. tableconcat(value,",") .. ")" else -- boolean or whatever buffer[#buffer+1] = tostring(value) end end end end function luamplib.runscript (code) local id, str = code:match("(.-){(.+)}") if id and str and str ~= "" then local f = runscript_funcs[id] if f then local t = f(str) if t then return t end end end local f = loadstring(code) if type(f) == "function" then local buffer = {} function mp.print(...) mpprint(buffer,...) end f() return tableconcat(buffer,"") end return "" end local function protecttexcontents (str) return str:gsub("\\%%", "\0PerCent\0") :gsub("%%.-\n", "") :gsub("%%.-$", "") :gsub("%zPerCent%z", "\\%%") :gsub("%s+", " ") end luamplib.legacy_verbatimtex = true function luamplib.maketext (str, what) if str and str ~= "" then str = protecttexcontents(str) if what == 1 then if not str:find("\\documentclass"..name_e) and not str:find("\\begin%s*{document}") and not str:find("\\documentstyle"..name_e) and not str:find("\\usepackage"..name_e) then if luamplib.legacy_verbatimtex then if luamplib.in_the_fig then return process_verbatimtex_infig(str) else return process_verbatimtex_prefig(str) end else return process_verbatimtex_text(str) end end else return process_tex_text(str) end end return "" end local mplibcodepreamble = [[ texscriptmode := 2; def rawtextext (expr t) = runscript("luamplibtext{"&t&"}") enddef; def mplibcolor (expr t) = runscript("luamplibcolor{"&t&"}") enddef; def mplibdimen (expr t) = runscript("luamplibdimen{"&t&"}") enddef; def VerbatimTeX (expr t) = runscript("luamplibverbtex{"&t&"}") enddef; if known context_mlib: defaultfont := "cmtt10"; let infont = normalinfont; let fontsize = normalfontsize; vardef thelabel@#(expr p,z) = if string p : thelabel@#(p infont defaultfont scaled defaultscale,z) else : p shifted (z + labeloffset*mfun_laboff@# - (mfun_labxf@#*lrcorner p + mfun_labyf@#*ulcorner p + (1-mfun_labxf@#-mfun_labyf@#)*llcorner p)) fi enddef; def graphictext primary filename = if (readfrom filename = EOF): errmessage "Please prepare '"&filename&"' in advance with"& " 'pstoedit -ssp -dt -f mpost yourfile.ps "&filename&"'"; fi closefrom filename; def data_mpy_file = filename enddef; mfun_do_graphic_text (filename) enddef; else: vardef textext@# (text t) = rawtextext (t) enddef; fi def externalfigure primary filename = draw rawtextext("\includegraphics{"& filename &"}") enddef; def TEX = textext enddef; ]] luamplib.mplibcodepreamble = mplibcodepreamble local legacyverbatimtexpreamble = [[ def specialVerbatimTeX (text t) = runscript("luamplibprefig{"&t&"}") enddef; def normalVerbatimTeX (text t) = runscript("luamplibinfig{"&t&"}") enddef; let VerbatimTeX = specialVerbatimTeX; extra_beginfig := extra_beginfig & " let VerbatimTeX = normalVerbatimTeX;"& "runscript(" &ditto& "luamplib.in_the_fig=true" &ditto& ");"; extra_endfig := extra_endfig & " let VerbatimTeX = specialVerbatimTeX;"& "runscript(" &ditto& "luamplib.in_the_fig=false luamplib.figid=luamplib.figid+1" &ditto& ");"; ]] luamplib.legacyverbatimtexpreamble = legacyverbatimtexpreamble local textextlabelpreamble = [[ primarydef s infont f = rawtextext(s) enddef; def fontsize expr f = begingroup save size; numeric size; size := mplibdimen("1em"); if size = 0: 10pt else: size fi endgroup enddef; ]] luamplib.textextlabelpreamble = textextlabelpreamble luamplib.verbatiminput = false local function protect_expansion (str) if str then str = str:gsub("\\","!!!Control!!!") :gsub("%%","!!!Comment!!!") :gsub("#", "!!!HashSign!!!") :gsub("{", "!!!LBrace!!!") :gsub("}", "!!!RBrace!!!") return format("\\unexpanded{%s}",str) end end local function unprotect_expansion (str) if str then return str:gsub("!!!Control!!!", "\\") :gsub("!!!Comment!!!", "%%") :gsub("!!!HashSign!!!","#") :gsub("!!!LBrace!!!", "{") :gsub("!!!RBrace!!!", "}") end end local function process_mplibcode (data) legacy_mplibcode_reset() local everymplib = texgettoks'everymplibtoks' or '' local everyendmplib = texgettoks'everyendmplibtoks' or '' data = format("\n%s\n%s\n%s\n",everymplib, data, everyendmplib) data = data:gsub("\r","\n") data = data:gsub("\\mpcolor%s+(.-%b{})","mplibcolor(\"%1\")") data = data:gsub("\\mpdim%s+(%b{})", "mplibdimen(\"%1\")") data = data:gsub("\\mpdim%s+(\\%a+)","mplibdimen(\"%1\")") data = data:gsub(btex_etex, function(str) return format("btex %s etex ", -- space luamplib.verbatiminput and str or protect_expansion(str)) end) data = data:gsub(verbatimtex_etex, function(str) return format("verbatimtex %s etex;", -- semicolon luamplib.verbatiminput and str or protect_expansion(str)) end) if not luamplib.verbatiminput then data = data:gsub("\".-\"", protect_expansion) data = data:gsub("\\%%", "\0PerCent\0") data = data:gsub("%%.-\n","") data = data:gsub("%zPerCent%z", "\\%%") run_tex_code(format("\\mplibtmptoks\\expanded{{%s}}",data)) data = texgettoks"mplibtmptoks" data = data:gsub("##", "#") data = data:gsub("\".-\"", unprotect_expansion) data = data:gsub(btex_etex, function(str) return format("btex %s etex", unprotect_expansion(str)) end) data = data:gsub(verbatimtex_etex, function(str) return format("verbatimtex %s etex", unprotect_expansion(str)) end) end process(data) end luamplib.process_mplibcode = process_mplibcode local further_split_keys = { mplibtexboxid = true, sh_color_a = true, sh_color_b = true, } local function script2table(s) local t = {} for _,i in ipairs(s:explode("\13+")) do local k,v = i:match("(.-)=(.*)") -- v may contain = or empty. if k and v and k ~= "" then if further_split_keys[k] then t[k] = v:explode(":") else t[k] = v end end end return t end local function getobjects(result,figure,f) return figure:objects() end local function convert(result, flusher) luamplib.flush(result, flusher) return true -- done end luamplib.convert = convert local function pdf_startfigure(n,llx,lly,urx,ury) texsprint(format("\\mplibstarttoPDF{%f}{%f}{%f}{%f}",llx,lly,urx,ury)) end local function pdf_stopfigure() texsprint("\\mplibstoptoPDF") end local function pdf_literalcode(fmt,...) -- table textprint({"\\mplibtoPDF{"},{-2,format(fmt,...)},{"}"}) end local function pdf_textfigure(font,size,text,width,height,depth) text = text:gsub(".",function(c) return format("\\hbox{\\char%i}",string.byte(c)) -- kerning happens in metapost end) texsprint(format("\\mplibtextext{%s}{%f}{%s}{%s}{%f}",font,size,text,0,-( 7200/ 7227)/65536*depth)) end local bend_tolerance = 131/65536 local rx, sx, sy, ry, tx, ty, divider = 1, 0, 0, 1, 0, 0, 1 local function pen_characteristics(object) local t = mplib.pen_info(object) rx, ry, sx, sy, tx, ty = t.rx, t.ry, t.sx, t.sy, t.tx, t.ty divider = sx*sy - rx*ry return not (sx==1 and rx==0 and ry==0 and sy==1 and tx==0 and ty==0), t.width end local function concat(px, py) -- no tx, ty here return (sy*px-ry*py)/divider,(sx*py-rx*px)/divider end local function curved(ith,pth) local d = pth.left_x - ith.right_x if abs(ith.right_x - ith.x_coord - d) <= bend_tolerance and abs(pth.x_coord - pth.left_x - d) <= bend_tolerance then d = pth.left_y - ith.right_y if abs(ith.right_y - ith.y_coord - d) <= bend_tolerance and abs(pth.y_coord - pth.left_y - d) <= bend_tolerance then return false end end return true end local function flushnormalpath(path,open) local pth, ith for i=1,#path do pth = path[i] if not ith then pdf_literalcode("%f %f m",pth.x_coord,pth.y_coord) elseif curved(ith,pth) then pdf_literalcode("%f %f %f %f %f %f c",ith.right_x,ith.right_y,pth.left_x,pth.left_y,pth.x_coord,pth.y_coord) else pdf_literalcode("%f %f l",pth.x_coord,pth.y_coord) end ith = pth end if not open then local one = path[1] if curved(pth,one) then pdf_literalcode("%f %f %f %f %f %f c",pth.right_x,pth.right_y,one.left_x,one.left_y,one.x_coord,one.y_coord ) else pdf_literalcode("%f %f l",one.x_coord,one.y_coord) end elseif #path == 1 then -- special case .. draw point local one = path[1] pdf_literalcode("%f %f l",one.x_coord,one.y_coord) end end local function flushconcatpath(path,open) pdf_literalcode("%f %f %f %f %f %f cm", sx, rx, ry, sy, tx ,ty) local pth, ith for i=1,#path do pth = path[i] if not ith then pdf_literalcode("%f %f m",concat(pth.x_coord,pth.y_coord)) elseif curved(ith,pth) then local a, b = concat(ith.right_x,ith.right_y) local c, d = concat(pth.left_x,pth.left_y) pdf_literalcode("%f %f %f %f %f %f c",a,b,c,d,concat(pth.x_coord, pth.y_coord)) else pdf_literalcode("%f %f l",concat(pth.x_coord, pth.y_coord)) end ith = pth end if not open then local one = path[1] if curved(pth,one) then local a, b = concat(pth.right_x,pth.right_y) local c, d = concat(one.left_x,one.left_y) pdf_literalcode("%f %f %f %f %f %f c",a,b,c,d,concat(one.x_coord, one.y_coord)) else pdf_literalcode("%f %f l",concat(one.x_coord,one.y_coord)) end elseif #path == 1 then -- special case .. draw point local one = path[1] pdf_literalcode("%f %f l",concat(one.x_coord,one.y_coord)) end end local pdfoutput = tonumber(texget("outputmode")) or tonumber(texget("pdfoutput")) local pdfmode = pdfoutput > 0 local function start_pdf_code() if pdfmode then pdf_literalcode("q") else texsprint("\\special{pdf:bcontent}") -- dvipdfmx end end local function stop_pdf_code() if pdfmode then pdf_literalcode("Q") else texsprint("\\special{pdf:econtent}") -- dvipdfmx end end local function put_tex_boxes (object,prescript) local box = prescript.mplibtexboxid local n,tw,th = box[1],tonumber(box[2]),tonumber(box[3]) if n and tw and th then 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, rx, ry, sy = 1, 0, 0, 1 if tw ~= 0 then sx = (second.x_coord - tx)/tw rx = (second.y_coord - ty)/tw if sx == 0 then sx = 0.00001 end end if th ~= 0 then sy = (fourth.y_coord - ty)/th ry = (fourth.x_coord - tx)/th if sy == 0 then sy = 0.00001 end end start_pdf_code() pdf_literalcode("%f %f %f %f %f %f cm",sx,rx,ry,sy,tx,ty) texsprint(format("\\mplibputtextbox{%i}",n)) stop_pdf_code() end end local pdf_objs = {} local token, getpageres, setpageres = newtoken or token local pgf = { bye = "pgfutil@everybye", extgs = "pgf@sys@addpdfresource@extgs@plain" } if pdfmode then -- repect luaotfload-colors getpageres = pdf.getpageresources or function() return pdf.pageresources end setpageres = pdf.setpageresources or function(s) pdf.pageresources = s end else texsprint("\\special{pdf:obj @MPlibTr<<>>}", "\\special{pdf:obj @MPlibSh<<>>}") end local function update_pdfobjs (os) local on = pdf_objs[os] if on then return on,false end if pdfmode then on = pdf.immediateobj(os) else on = pdf_objs.cnt or 0 pdf_objs.cnt = on + 1 end pdf_objs[os] = on return on,true end local transparancy_modes = { [0] = "Normal", "Normal", "Multiply", "Screen", "Overlay", "SoftLight", "HardLight", "ColorDodge", "ColorBurn", "Darken", "Lighten", "Difference", "Exclusion", "Hue", "Saturation", "Color", "Luminosity", "Compatible", } local function update_tr_res(res,mode,opaq) local os = format("<>",mode,opaq,opaq) local on, new = update_pdfobjs(os) if new then if pdfmode then res = format("%s/MPlibTr%i %i 0 R",res,on,on) else if pgf.loaded then texsprint(format("\\csname %s\\endcsname{/MPlibTr%i%s}", pgf.extgs, on, os)) else texsprint(format("\\special{pdf:put @MPlibTr<>}",on,os)) end end end return res,on end local function tr_pdf_pageresources(mode,opaq) if token and pgf.bye and not pgf.loaded then pgf.loaded = token.create(pgf.bye).cmdname == "assign_toks" pgf.bye = pgf.loaded and pgf.bye end local res, on_on, off_on = "", nil, nil res, off_on = update_tr_res(res, "Normal", 1) res, on_on = update_tr_res(res, mode, opaq) if pdfmode then if res ~= "" then if pgf.loaded then texsprint(format("\\csname %s\\endcsname{%s}", pgf.extgs, res)) else local tpr, n = getpageres() or "", 0 tpr, n = tpr:gsub("/ExtGState<<", "%1"..res) if n == 0 then tpr = format("%s/ExtGState<<%s>>", tpr, res) end setpageres(tpr) end end else if not pgf.loaded then texsprint(format("\\special{pdf:put @resources<>}")) end end return on_on, off_on end local shading_res local function shading_initialize () shading_res = {} if pdfmode and luatexbase.callbacktypes.finish_pdffile then -- ltluatex local shading_obj = pdf.reserveobj() setpageres(format("%s/Shading %i 0 R",getpageres() or "",shading_obj)) luatexbase.add_to_callback("finish_pdffile", function() pdf.immediateobj(shading_obj,format("<<%s>>",tableconcat(shading_res))) end, "luamplib.finish_pdffile") pdf_objs.finishpdf = true end end local function sh_pdfpageresources(shtype,domain,colorspace,colora,colorb,coordinates) if not shading_res then shading_initialize() end local os = format("<>", domain, colora, colorb) local funcobj = pdfmode and format("%i 0 R",update_pdfobjs(os)) or os os = format("<>", shtype, colorspace, funcobj, coordinates) local on, new = update_pdfobjs(os) if pdfmode then if new then local res = format("/MPlibSh%i %i 0 R", on, on) if pdf_objs.finishpdf then shading_res[#shading_res+1] = res else local pageres = getpageres() or "" if not pageres:find("/Shading<<.*>>") then pageres = pageres.."/Shading<<>>" end pageres = pageres:gsub("/Shading<<","%1"..res) setpageres(pageres) end end else if new then texsprint(format("\\special{pdf:put @MPlibSh<>}",on,os)) end texsprint(format("\\special{pdf:put @resources<>}")) end return on end local function color_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 -- #ca = 3 cb[1], cb[2], cb[3] = cb[1], cb[1], cb[1] end elseif #cb == 3 then -- #ca == 4 cb[1], cb[2], cb[3], cb[4] = 1-cb[1], 1-cb[2], 1-cb[3], 0 end end local prev_override_color local function do_preobj_color(object,prescript) local opaq = prescript and prescript.tr_transparency local tron_no, troff_no if opaq then local mode = prescript.tr_alternative or 1 mode = transparancy_modes[tonumber(mode)] tron_no, troff_no = tr_pdf_pageresources(mode,opaq) pdf_literalcode("/MPlibTr%i gs",tron_no) end local override = prescript and prescript.MPlibOverrideColor if override then if pdfmode then pdf_literalcode(override) override = nil else texsprint(format("\\special{color push %s}",override)) prev_override_color = override end else local cs = object.color if cs and #cs > 0 then pdf_literalcode(luamplib.colorconverter(cs)) prev_override_color = nil elseif not pdfmode then override = prev_override_color if override then texsprint(format("\\special{color push %s}",override)) end end end local sh_type = prescript and prescript.sh_type if sh_type then local domain = prescript.sh_domain local centera = prescript.sh_center_a:explode() local centerb = prescript.sh_center_b:explode() for _,t in pairs({centera,centerb}) do for i,v in ipairs(t) do t[i] = format("%f",v) end end centera = tableconcat(centera," ") centerb = tableconcat(centerb," ") local colora = prescript.sh_color_a or {0}; local colorb = prescript.sh_color_b or {1}; for _,t in pairs({colora,colorb}) do for i,v in ipairs(t) do t[i] = format("%.3f",v) end end if #colora > #colorb then color_normalize(colora,colorb) elseif #colorb > #colora then color_normalize(colorb,colora) end local colorspace if #colorb == 1 then colorspace = "DeviceGray" elseif #colorb == 3 then colorspace = "DeviceRGB" elseif #colorb == 4 then colorspace = "DeviceCMYK" else return troff_no,override end colora = tableconcat(colora, " ") colorb = tableconcat(colorb, " ") local shade_no if sh_type == "linear" then local coordinates = tableconcat({centera,centerb}," ") shade_no = sh_pdfpageresources(2,domain,colorspace,colora,colorb,coordinates) elseif sh_type == "circular" then local radiusa = format("%f",prescript.sh_radius_a) local radiusb = format("%f",prescript.sh_radius_b) local coordinates = tableconcat({centera,radiusa,centerb,radiusb}," ") shade_no = sh_pdfpageresources(3,domain,colorspace,colora,colorb,coordinates) end pdf_literalcode("q /Pattern cs") return troff_no,override,shade_no end return troff_no,override end local function do_postobj_color(tr,over,sh) if sh then pdf_literalcode("W n /MPlibSh%s sh Q",sh) end if over then texsprint("\\special{color pop}") end if tr then pdf_literalcode("/MPlibTr%i gs",tr) end end local function flush(result,flusher) if result then local figures = result.fig if figures then for f=1, #figures do info("flushing figure %s",f) local figure = figures[f] local objects = getobjects(result,figure,f) local fignum = tonumber(figure:filename():match("([%d]+)$") or figure:charcode() or 0) local miterlimit, linecap, linejoin, dashed = -1, -1, -1, false local bbox = figure:boundingbox() local llx, lly, urx, ury = bbox[1], bbox[2], bbox[3], bbox[4] -- faster than unpack if urx < llx then else if tex_code_pre_mplib[f] then texsprint(tex_code_pre_mplib[f]) end local TeX_code_bot = {} pdf_startfigure(fignum,llx,lly,urx,ury) start_pdf_code() if objects then local savedpath = nil local savedhtap = nil for o=1,#objects do local object = objects[o] local objecttype = object.type local prescript = object.prescript prescript = prescript and script2table(prescript) -- prescript is now a table local tr_opaq,cr_over,shade_no = do_preobj_color(object,prescript) if prescript and prescript.mplibtexboxid then put_tex_boxes(object,prescript) elseif objecttype == "start_bounds" or objecttype == "stop_bounds" then --skip elseif objecttype == "start_clip" then local evenodd = not object.istext and object.postscript == "evenodd" start_pdf_code() flushnormalpath(object.path,false) pdf_literalcode(evenodd and "W* n" or "W n") elseif objecttype == "stop_clip" then stop_pdf_code() miterlimit, linecap, linejoin, dashed = -1, -1, -1, false elseif objecttype == "special" then if prescript and prescript.postmplibverbtex then TeX_code_bot[#TeX_code_bot+1] = prescript.postmplibverbtex end elseif objecttype == "text" then local ot = object.transform -- 3,4,5,6,1,2 start_pdf_code() pdf_literalcode("%f %f %f %f %f %f cm",ot[3],ot[4],ot[5],ot[6],ot[1],ot[2]) pdf_textfigure(object.font,object.dsize,object.text,object.width,object.height,object.depth) stop_pdf_code() else local evenodd, collect, both = false, false, false local postscript = object.postscript if not object.istext then if postscript == "evenodd" then evenodd = true elseif postscript == "collect" then collect = true elseif postscript == "both" then both = true elseif postscript == "eoboth" then evenodd = true both = true end end if collect then if not savedpath then savedpath = { object.path or false } savedhtap = { object.htap or false } else savedpath[#savedpath+1] = object.path or false savedhtap[#savedhtap+1] = object.htap or false end else local ml = object.miterlimit if ml and ml ~= miterlimit then miterlimit = ml pdf_literalcode("%f M",ml) end local lj = object.linejoin if lj and lj ~= linejoin then linejoin = lj pdf_literalcode("%i j",lj) end local lc = object.linecap if lc and lc ~= linecap then linecap = lc pdf_literalcode("%i J",lc) end local dl = object.dash if dl then local d = format("[%s] %f d",tableconcat(dl.dashes or {}," "),dl.offset) if d ~= dashed then dashed = d pdf_literalcode(dashed) end elseif dashed then pdf_literalcode("[] 0 d") dashed = false end local path = object.path local transformed, penwidth = false, 1 local open = path and path[1].left_type and path[#path].right_type local pen = object.pen if pen then if pen.type == 'elliptical' then transformed, penwidth = pen_characteristics(object) -- boolean, value pdf_literalcode("%f w",penwidth) if objecttype == 'fill' then objecttype = 'both' end else -- calculated by mplib itself objecttype = 'fill' end end if transformed then start_pdf_code() end if path then if savedpath then for i=1,#savedpath do local path = savedpath[i] if transformed then flushconcatpath(path,open) else flushnormalpath(path,open) end end savedpath = nil end if transformed then flushconcatpath(path,open) else flushnormalpath(path,open) end if not shade_no then -- conflict with shading if objecttype == "fill" then pdf_literalcode(evenodd and "h f*" or "h f") elseif objecttype == "outline" then if both then pdf_literalcode(evenodd and "h B*" or "h B") else pdf_literalcode(open and "S" or "h S") end elseif objecttype == "both" then pdf_literalcode(evenodd and "h B*" or "h B") end end end if transformed then stop_pdf_code() end local path = object.htap if path then if transformed then start_pdf_code() end if savedhtap then for i=1,#savedhtap do local path = savedhtap[i] if transformed then flushconcatpath(path,open) else flushnormalpath(path,open) end end savedhtap = nil evenodd = true end if transformed then flushconcatpath(path,open) else flushnormalpath(path,open) end if objecttype == "fill" then pdf_literalcode(evenodd and "h f*" or "h f") elseif objecttype == "outline" then pdf_literalcode(open and "S" or "h S") elseif objecttype == "both" then pdf_literalcode(evenodd and "h B*" or "h B") end if transformed then stop_pdf_code() end end end end do_postobj_color(tr_opaq,cr_over,shade_no) end end stop_pdf_code() pdf_stopfigure() if #TeX_code_bot > 0 then texsprint(TeX_code_bot) end end end end end end luamplib.flush = flush local function colorconverter(cr) local n = #cr if n == 4 then local c, m, y, k = cr[1], cr[2], cr[3], cr[4] return format("%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K",c,m,y,k,c,m,y,k), "0 g 0 G" elseif n == 3 then local r, g, b = cr[1], cr[2], cr[3] return format("%.3f %.3f %.3f rg %.3f %.3f %.3f RG",r,g,b,r,g,b), "0 g 0 G" else local s = cr[1] return format("%.3f g %.3f G",s,s), "0 g 0 G" end end luamplib.colorconverter = colorconverter -- -- End of File `luamplib.lua'.