diff options
Diffstat (limited to 'tex/context/base/lpdf-col.lua')
| -rw-r--r-- | tex/context/base/lpdf-col.lua | 138 |
1 files changed, 78 insertions, 60 deletions
diff --git a/tex/context/base/lpdf-col.lua b/tex/context/base/lpdf-col.lua index b358d0820..877c01a1c 100644 --- a/tex/context/base/lpdf-col.lua +++ b/tex/context/base/lpdf-col.lua @@ -14,42 +14,50 @@ local formatters = string.formatters local backends, lpdf, nodes = backends, lpdf, nodes -local allocate = utilities.storage.allocate -local formatters = string.formatters - -local nodeinjections = backends.pdf.nodeinjections -local codeinjections = backends.pdf.codeinjections -local registrations = backends.pdf.registrations - -local nodepool = nodes.pool -local register = nodepool.register -local pdfliteral = nodepool.pdfliteral - -local pdfconstant = lpdf.constant -local pdfstring = lpdf.string -local pdfdictionary = lpdf.dictionary -local pdfarray = lpdf.array -local pdfreference = lpdf.reference -local pdfverbose = lpdf.verbose -local pdfflushobject = lpdf.flushobject -local pdfflushstreamobject = lpdf.flushstreamobject - -local colors = attributes.colors -local transparencies = attributes.transparencies -local registertransparancy = transparencies.register -local registercolor = colors.register -local colorsvalue = colors.value -local transparenciesvalue = transparencies.value -local forcedmodel = colors.forcedmodel - -local c_transparency = pdfconstant("Transparency") - -local f_gray = formatters["%.3f g %.3f G"] -local f_rgb = formatters["%.3f %.3f %.3f rg %.3f %.3f %.3f RG"] -local f_cmyk = formatters["%.3f %.3f %.3f %.3f k %.3f %.3f %.3f %.3f K"] +local allocate = utilities.storage.allocate +local formatters = string.formatters + +local nodeinjections = backends.pdf.nodeinjections +local codeinjections = backends.pdf.codeinjections +local registrations = backends.pdf.registrations + +local nodepool = nodes.pool +local register = nodepool.register +local pdfliteral = nodepool.pdfliteral + +local pdfconstant = lpdf.constant +local pdfstring = lpdf.string +local pdfdictionary = lpdf.dictionary +local pdfarray = lpdf.array +local pdfreference = lpdf.reference +local pdfverbose = lpdf.verbose +local pdfflushobject = lpdf.flushobject +local pdfdelayedobject = lpdf.delayedobject +local pdfflushstreamobject = lpdf.flushstreamobject + +local pdfshareobjectreference = lpdf.shareobjectreference + +local addtopageattributes = lpdf.addtopageattributes +local adddocumentcolorspace = lpdf.adddocumentcolorspace +local adddocumentextgstate = lpdf.adddocumentextgstate + +local colors = attributes.colors +local transparencies = attributes.transparencies +local registertransparancy = transparencies.register +local registercolor = colors.register +local colorsvalue = colors.value +local transparenciesvalue = transparencies.value +local forcedmodel = colors.forcedmodel +local getpagecolormodel = colors.getpagecolormodel + +local c_transparency = pdfconstant("Transparency") + +local f_gray = formatters["%.3F g %.3F G"] +local f_rgb = formatters["%.3F %.3F %.3F rg %.3F %.3F %.3F RG"] +local f_cmyk = formatters["%.3F %.3F %.3F %.3F k %.3F %.3F %.3F %.3F K"] local f_spot = formatters["/%s cs /%s CS %s SCN %s scn"] local f_tr = formatters["Tr%s"] -local f_cm = formatters["q %f %f %f %f %f %f cm"] +local f_cm = formatters["q %F %F %F %F %F %F cm"] local f_effect = formatters["%s Tc %s w %s Tr"] local f_tr_gs = formatters["/Tr%s gs"] local f_num_1 = tostring @@ -76,11 +84,13 @@ lpdf.transparencygroups = transparencygroups table.setmetatableindex(transparencygroups, function(transparencygroups,colormodel) local cs = colorspaceconstants[colormodel] if cs then - local g = pdfreference(pdfflushobject(pdfdictionary { + local d = pdfdictionary { S = c_transparency, CS = cs, I = true, - })) + } + -- local g = pdfreference(pdfflushobject(tostring(d))) + local g = pdfreference(pdfdelayedobject(tostring(d))) transparencygroups[colormodel] = g return g else @@ -89,26 +99,18 @@ table.setmetatableindex(transparencygroups, function(transparencygroups,colormod end end) -local currentgroupcolormodel - local function addpagegroup() - if currentgroupcolormodel then - local g = transparencygroups[currentgroupcolormodel] + local model = getpagecolormodel() + if model then + local g = transparencygroups[model] if g then - lpdf.addtopageattributes("Group",g) + addtopageattributes("Group",g) end end end lpdf.registerpagefinalizer(addpagegroup,3,"pagegroup") -local function synchronizecolormodel(model) - currentgroupcolormodel = model -end - -backends.codeinjections.synchronizecolormodel = synchronizecolormodel -commands.synchronizecolormodel = synchronizecolormodel - -- injection code (needs a bit reordering) -- color injection @@ -175,7 +177,7 @@ local f_gray_function = formatters["%s mul"] local documentcolorspaces = pdfdictionary() -local spotcolorhash = { } -- not needed +local spotcolorhash = { } -- not needed local spotcolornames = { } local indexcolorhash = { } local delayedindexcolors = { } @@ -193,7 +195,7 @@ end -- This should become delayed i.e. only flush when used; in that case we need -- need to store the specification and then flush them when accesssomespotcolor -- is called. At this moment we assume that splotcolors that get defined are --- also used which keeps the overhad small anyway. +-- also used which keeps the overhad small anyway. Tricky for mp ... local processcolors @@ -224,13 +226,14 @@ local function registersomespotcolor(name,noffractions,names,p,colorspace,range, local mr = pdfreference(m) spotcolorhash[name] = m documentcolorspaces[name] = mr - lpdf.adddocumentcolorspace(name,mr) + adddocumentcolorspace(name,mr) else local cnames = pdfarray() local domain = pdfarray() local colorants = pdfdictionary() for n in gmatch(names,"[^,]+") do local name = spotcolornames[n] or n + -- the cmyk names assume that they are indeed these colors if n == "cyan" then name = "Cyan" elseif n == "magenta" then @@ -241,9 +244,15 @@ local function registersomespotcolor(name,noffractions,names,p,colorspace,range, name = "Black" else local sn = spotcolorhash[name] or spotcolorhash[n] + if not sn then + report_color("defining %a as colorant",name) + colors.definespotcolor("",name,"p=1",true) + sn = spotcolorhash[name] or spotcolorhash[n] + end if sn then colorants[name] = pdfreference(sn) else + -- maybe some day generate colorants (spot colors for multi) automatically report_color("unknown colorant %a, using black instead",name or n) name = "Black" end @@ -280,13 +289,13 @@ local function registersomespotcolor(name,noffractions,names,p,colorspace,range, cnames, colorspace, pdfreference(calculation), - lpdf.shareobjectreference(tostring(channels)), -- optional but needed for shades + pdfshareobjectreference(tostring(channels)), -- optional but needed for shades } local m = pdfflushobject(array) local mr = pdfreference(m) spotcolorhash[name] = m documentcolorspaces[name] = mr - lpdf.adddocumentcolorspace(name,mr) + adddocumentcolorspace(name,mr) end end @@ -336,7 +345,7 @@ local function registersomeindexcolor(name,noffractions,names,p,colorspace,range end vector = pdfverbose { "<", concat(vector, " "), ">" } local n = pdfflushobject(pdfarray{ pdf_indexed, a, 255, vector }) - lpdf.adddocumentcolorspace(format("%s_indexed",name),pdfreference(n)) + adddocumentcolorspace(format("%s_indexed",name),pdfreference(n)) return n end @@ -455,7 +464,7 @@ function registrations.transparency(n,a,t) local mr = pdfreference(m) transparencyhash[0] = m documenttransparencies[0] = mr - lpdf.adddocumentextgstate("Tr0",mr) + adddocumentextgstate("Tr0",mr) done = true end if n > 0 and not transparencyhash[n] then @@ -470,13 +479,16 @@ function registrations.transparency(n,a,t) local mr = pdfreference(m) transparencyhash[n] = m documenttransparencies[n] = mr - lpdf.adddocumentextgstate(f_tr(n),mr) + adddocumentextgstate(f_tr(n),mr) end end statistics.register("page group warning", function() - if done and not transparencygroups[currentgroupcolormodel] then - return "transparencies are used but no pagecolormodel is set" + if done then + local model = getpagecolormodel() + if model and not transparencygroups[model] then + return "transparencies are used but no pagecolormodel is set" + end end end) @@ -520,6 +532,12 @@ end lpdf.color = lpdfcolor +interfaces.implement { + name = "lpdf_color", + actions = { lpdfcolor, context }, + arguments = "integer" +} + function lpdf.colorspec(model,ca,default) if ca and ca > 0 then local cv = colors.value(ca) @@ -544,7 +562,7 @@ function lpdf.colorspec(model,ca,default) end function lpdf.pdfcolor(attribute) -- bonus, for pgf and friends - context(lpdfcolor(1,attribute)) + return lpdfcolor(1,attribute) end function lpdf.transparency(ct,default) -- kind of overlaps with transparencycode @@ -689,7 +707,7 @@ end -- this will move to lpdf-spe.lua -local f_slant = formatters["pdf: q 1 0 %f 1 0 0 cm"] +local f_slant = formatters["pdf: q 1 0 %F 1 0 0 cm"] backends.pdf.tables.vfspecials = allocate { -- todo: distinguish between glyph and rule color |