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if not modules then modules = { } end modules ['lpdf-nod'] = {
version = 1.001,
comment = "companion to lpdf-ini.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local type = type
local formatters = string.formatters
local nodecodes = nodes.nodecodes
local whatsitcodes = nodes.whatsitcodes
local nodeinjections = backends.nodeinjections
local nuts = nodes.nuts
local tonut = nuts.tonut
local setfield = nuts.setfield
local setdata = nuts.setdata
local copy_node = nuts.copy
local new_node = nuts.new
local nodepool = nuts.pool
local register = nodepool.register
local whatsit_code = nodecodes.whatsit
local savewhatsit_code = whatsitcodes.save
local restorewhatsit_code = whatsitcodes.restore
local setmatrixwhatsit_code = whatsitcodes.setmatrix
local literalwhatsit_code = whatsitcodes.literal
local literalvalues = nodes.literalvalues
local originliteral_code = literalvalues.origin
local pageliteral_code = literalvalues.page
local directliteral_code = literalvalues.direct
local rawliteral_code = literalvalues.raw
local s_matrix_0 = "1 0 0 1"
local f_matrix_2 = formatters["%.6F 0 0 %.6F"]
local f_matrix_4 = formatters["%.6F %.6F %.6F %.6F"]
directives.register("pdf.stripzeros",function()
f_matrix_2 = formatters["%.6N 0 0 %.6N"]
f_matrix_4 = formatters["%.6N %.6N %.6N %.6N"]
end)
local function tomatrix(rx,sx,sy,ry,tx,ty) -- todo: tx ty
if type(rx) == "string" then
return rx
else
if not rx then
rx = 1
elseif rx == 0 then
rx = 0.0001
end
if not ry then
ry = 1
elseif ry == 0 then
ry = 0.0001
end
if not sx then
sx = 0
end
if not sy then
sy = 0
end
if sx == 0 and sy == 0 then
if rx == 1 and ry == 1 then
return s_matrix_0
else
return f_matrix_2(rx,ry)
end
else
return f_matrix_4(rx,sx,sy,ry)
end
end
end
if CONTEXTLMTXMODE then
local nodeproperties = nodes.properties.data
local pdfliteral = register(new_node(whatsit_code,literalwhatsit_code))
function nodepool.pdforiginliteral(str) local t = copy_node(pdfliteral) nodeproperties[t] = { data = str, mode = originliteral_code } return t end
function nodepool.pdfpageliteral (str) local t = copy_node(pdfliteral) nodeproperties[t] = { data = str, mode = pageliteral_code } return t end
function nodepool.pdfdirectliteral(str) local t = copy_node(pdfliteral) nodeproperties[t] = { data = str, mode = directliteral_code } return t end
function nodepool.pdfrawliteral (str) local t = copy_node(pdfliteral) nodeproperties[t] = { data = str, mode = rawliteral_code } return t end
local pdfliterals = {
-- by number
[originliteral_code] = originliteral_code,
[pageliteral_code] = pageliteral_code,
[directliteral_code] = directliteral_code,
[rawliteral_code] = rawliteral_code,
-- by name
[literalvalues[originliteral_code]] = originliteral_code,
[literalvalues[pageliteral_code]] = pageliteral_code,
[literalvalues[directliteral_code]] = directliteral_code,
[literalvalues[rawliteral_code]] = rawliteral_code,
}
function nodepool.pdfliteral(mode,str)
local t = copy_node(pdfliteral)
if str then
nodeproperties[t] = { data = str, mode = pdfliterals[mode] or pageliteral_code }
else
nodeproperties[t] = { data = mode, mode = pageliteral_code }
end
return t
end
else
local pdforiginliteral = register(new_node(whatsit_code, literalwhatsit_code)) setfield(pdforiginliteral,"mode",originliteral_code)
local pdfpageliteral = register(new_node(whatsit_code, literalwhatsit_code)) setfield(pdfpageliteral, "mode",pageliteral_code)
local pdfdirectliteral = register(new_node(whatsit_code, literalwhatsit_code)) setfield(pdfdirectliteral,"mode",directliteral_code)
local pdfrawliteral = register(new_node(whatsit_code, literalwhatsit_code)) setfield(pdfrawliteral, "mode",rawliteral_code)
function nodepool.pdforiginliteral(str) local t = copy_node(pdforiginliteral) setdata(t,str) return t end
function nodepool.pdfpageliteral (str) local t = copy_node(pdfpageliteral ) setdata(t,str) return t end
function nodepool.pdfdirectliteral(str) local t = copy_node(pdfdirectliteral) setdata(t,str) return t end
function nodepool.pdfrawliteral (str) local t = copy_node(pdfrawliteral ) setdata(t,str) return t end
local pdfliterals = {
-- by number
[originliteral_code] = pdforiginliteral,
[pageliteral_code] = pdfpageliteral,
[directliteral_code] = pdfdirectliteral,
[rawliteral_code] = pdfrawliteral,
-- by name
[literalvalues[originliteral_code]] = pdforiginliteral,
[literalvalues[pageliteral_code]] = pdfpageliteral,
[literalvalues[directliteral_code]] = pdfdirectliteral,
[literalvalues[rawliteral_code]] = pdfrawliteral,
}
function nodepool.pdfliteral(mode,str)
if str then
local t = copy_node(pdfliterals[mode] or pdfpageliteral)
setdata(t,str)
return t
else
local t = copy_node(pdfpageliteral)
setdata(t,mode)
return t
end
end
end
local pdfsave = register(new_node(whatsit_code, savewhatsit_code))
local pdfrestore = register(new_node(whatsit_code, restorewhatsit_code))
local pdfsetmatrix = register(new_node(whatsit_code, setmatrixwhatsit_code))
function nodepool.pdfsave()
return copy_node(pdfsave)
end
function nodepool.pdfrestore()
return copy_node(pdfrestore)
end
if CONTEXTLMTXMODE then
local nodeproperties = nodes.properties.data
function nodepool.pdfsetmatrix(rx,sx,sy,ry,tx,ty)
local t = copy_node(pdfsetmatrix)
nodeproperties[t] = { matrix = tomatrix(rx,sx,sy,ry,tx,ty) }
return t
end
else
function nodepool.pdfsetmatrix(rx,sx,sy,ry,tx,ty)
local t = copy_node(pdfsetmatrix)
setdata(t,tomatrix(rx,sx,sy,ry,tx,ty))
return t
end
end
-- best is to use a specific one: origin | page | direct | raw
nodeinjections.save = nodepool.pdfsave
nodeinjections.restore = nodepool.pdfrestore
nodeinjections.transform = nodepool.pdfsetmatrix
-- the next one is implemented differently, using latelua
function nodepool.pdfannotation(w,h,d,data,n)
report("don't use node based annotations!")
os.exit()
-- local t = copy_node(pdfannot)
-- if w and w ~= 0 then
-- setfield(t,"width",w)
-- end
-- if h and h ~= 0 then
-- setfield(t,"height",h)
-- end
-- if d and d ~= 0 then
-- setfield(t,"depth",d)
-- end
-- if n then
-- setfield(t,"objnum",n)
-- end
-- if data and data ~= "" then
-- setfield(t,"data",data)
-- end
-- return t
end
-- (!) The next code in pdfdest.w is wrong:
--
-- case pdf_dest_xyz:
-- if (matrixused()) {
-- set_rect_dimens(pdf, p, parent_box, cur, alt_rule, pdf_dest_margin) ;
-- } else {
-- pdf_ann_left(p) = pos.h ;
-- pdf_ann_top (p) = pos.v ;
-- }
-- break ;
--
-- so we need to force a matrix.
-- local views = { -- beware, we do support the pdf keys but this is *not* official
-- xyz = 0, [variables.standard] = 0,
-- fit = 1, [variables.fit] = 1,
-- fith = 2, [variables.width] = 2,
-- fitv = 3, [variables.height] = 3,
-- fitb = 4,
-- fitbh = 5, [variables.minwidth] = 5,
-- fitbv = 6, [variables.minheight] = 6,
-- fitr = 7,
-- }
function nodepool.pdfdestination(w,h,d,name,view,n)
report("don't use node based destinations!")
os.exit()
-- local t = copy_node(pdfdest)
-- local hasdimensions = false
-- if w and w ~= 0 then
-- setfield(t,"width",w)
-- hasdimensions = true
-- end
-- if h and h ~= 0 then
-- setfield(t,"height",h)
-- hasdimensions = true
-- end
-- if d and d ~= 0 then
-- setfield(t,"depth",d)
-- hasdimensions = true
-- end
-- if n then
-- setfield(t,"objnum",n)
-- end
-- view = views[view] or view or 1 -- fit is default
-- setfield(t,"dest_id",name)
-- setfield(t,"dest_type",view)
-- if hasdimensions and view == 0 then -- xyz
-- -- see (!) s -> m -> t -> r
-- -- linked
-- local s = copy_node(pdfsave)
-- local m = copy_node(pdfsetmatrix)
-- local r = copy_node(pdfrestore)
-- setfield(m,"data","1 0 0 1")
-- setfield(s,"next",m)
-- setfield(m,"next",t)
-- setfield(t,"next",r)
-- setfield(m,"prev",s)
-- setfield(t,"prev",m)
-- setfield(r,"prev",t)
-- return s -- a list
-- else
-- return t
-- end
end
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