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|
if not modules then modules = { } end modules ['lpdf-ano'] = {
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 tostring, format, rep = tostring, string.rep, string.format
local texcount = tex.count
local trace_references = false trackers.register("references.references", function(v) trace_references = v end)
local trace_destinations = false trackers.register("references.destinations", function(v) trace_destinations = v end)
local trace_bookmarks = false trackers.register("references.bookmarks", function(v) trace_bookmarks = v end)
local variables = interfaces.variables
local constants = interfaces.constants
local nodeinjections = backends.pdf.nodeinjections
local codeinjections = backends.pdf.codeinjections
local registrations = backends.pdf.registrations
jobreferences = jobreferences or { }
jobreferences.runners = jobreferences.runners or { }
jobreferences.specials = jobreferences.specials or { }
jobreferences.handlers = jobreferences.handlers or { }
jobreferences.executers = jobreferences.executers or { }
local runners = jobreferences.runners
local specials = jobreferences.specials
local handlers = jobreferences.handlers
local executers = jobreferences.executers
local pdfdictionary = lpdf.dictionary
local pdfarray = lpdf.array
local pdfreference = lpdf.reference
local pdfunicode = lpdf.unicode
local pdfconstant = lpdf.constant
local pdfreserveobj = pdf.reserveobj
local pdfimmediateobj = pdf.immediateobj
local pdfpageref = tex.pdfpageref
local pdfannot = nodes.pdfannot
local pdfdest = nodes.pdfdest
local pdf_uri = pdfconstant("URI")
local pdf_gotor = pdfconstant("GoToR")
local pdf_goto = pdfconstant("GoTo")
local pdf_launch = pdfconstant("Launch")
local pdf_javascript = pdfconstant("JavaScript")
local pdf_link = pdfconstant("Link")
local pdf_n = pdfconstant("N")
local pdf_t = pdfconstant("T")
local pdf_border = pdfarray { 0, 0, 0 }
local cache = { }
local function pagedest(n)
local pd = cache[n]
if not pd then
local a = pdfarray {
pdfreference(pdfpageref(n)),
pdfconstant("Fit")
}
pd = pdfreference(pdfimmediateobj(tostring(a)))
cache[n] = pd
end
return pd
end
lpdf.pagedest = pagedest
local function link(url,filename,destination,page,actions)
if filename and filename ~= "" then
if file.basename(filename) == tex.jobname then
return false
else
filename = file.addsuffix(filename,"pdf")
end
end
if url and url ~= "" then
if filename and filename ~= "" then
if destination and destination ~= "" then
url = file.join(url,filename).."#"..destination
else
url = file.join(url,filename)
end
end
return pdfdictionary {
S = pdf_uri,
URI = url,
}
elseif filename and filename ~= "" then
return pdfdictionary {
S = pdf_gotor,
F = filename,
D = destination and destination ~= "" and destination,
NewWindow = (actions.newwindow and true) or nil,
}
elseif destination and destination ~= "" then
local realpage, p = texcount.realpageno, tonumber(page)
if not p then
-- sorry
elseif p > realpage then
texcount.referencepagestate = 3
elseif p < realpage then
texcount.referencepagestate = 2
else
texcount.referencepagestate = 1
end
return pdfdictionary {
S = pdf_goto,
D = destination,
}
elseif page and page ~= "" then
local realpage, p = texcount.realpageno, tonumber(page)
if p then
if p > realpage then
texcount.referencepagestate = 3
elseif p < realpage then
texcount.referencepagestate = 2
else
texcount.referencepagestate = 1
end
return pdfdictionary {
S = pdf_goto,
D = pagedest(p),
}
else
commands.writestatus("references","invalid page reference: %s",page or "?")
end
end
return false
end
lpdf.link = link
function lpdf.launch(program,parameters)
if program and program ~= "" then
local d = pdfdictionary {
S = pdf_launch,
F = program,
D = ".",
}
if parameters and parameters ~= "" then
d.P = parameters
end
return d
end
end
function lpdf.javascript(name,arguments)
local script = javascripts.code(name,arguments) -- make into object (hash)
if script then
return pdfdictionary {
S = pdf_javascript,
JS = script,
}
end
end
local function pdfaction(actions)
local nofactions = #actions
texcount.referencepagestate = 0 -- goodie, as we do all in the backend, we need to set it here too
if nofactions > 0 then
local a = actions[1]
local action = runners[a.kind]
if action then
action = action(a,actions)
end
if action then
local first = action
for i=2,nofactions do
local a = actions[i]
local what = runners[a.kind]
if what then
what = what(a,actions)
end
if what then
action.next = what
action = what
else
-- error
return nil
end
end
return first
end
end
end
lpdf.pdfaction = pdfaction
function codeinjections.prerollreference(actions)
local main = actions and pdfaction(actions)
if main then
main = pdfdictionary {
Subtype = pdf_link,
Border = pdf_border,
H = (not actions.highlight and pdf_n) or nil,
A = main,
-- does not work at all in spite of specification
-- OC = (actions.layer and lpdf.layerreferences[actions.layer]) or nil,
-- OC = backends.pdf.layerreference(actions.layer),
}
return main("A") -- todo: cache this, maybe weak
end
end
-- local cache = { } -- no real gain in thsi
--
-- function codeinjections.prerollreference(actions)
-- local main = actions and pdfaction(actions)
-- if main then
-- main = pdfdictionary {
-- Subtype = pdf_link,
-- Border = pdf_border,
-- H = (not actions.highlight and pdf_n) or nil,
-- A = main,
-- }
-- local cm = cache[main]
-- if not cm then
-- cm = "/A ".. tostring(pdfreference(pdfimmediateobj(tostring(main))))
-- cache[main] = cm
-- end
-- return cm
-- end
-- end
function nodeinjections.reference(width,height,depth,prerolled)
if prerolled then
if swapdir then
width = - width
end
if trace_references then
logs.report("references","w=%s, h=%s, d=%s, a=%s",width,height,depth,prerolled)
end
return pdfannot(width,height,depth,prerolled)
end
end
function nodeinjections.destination(width,height,depth,name,view)
if swapdir then
width = - width
end
if trace_destinations then
logs.report("destinations","w=%s, h=%s, d=%s, n=%s, v=%s",width,height,depth,name,view or "no view")
end
return pdfdest(width,height,depth,name,view)
end
-- runners and specials
local method = "internal"
runners["inner"] = function(var,actions)
if method == "internal" then
local vir = var.i.references
local internal = vir and vir.internal
if internal then
var.inner = "aut:"..internal
end
end
return link(nil,nil,var.inner,var.r,actions)
end
runners["inner with arguments"] = function(var,actions)
logs.report("references","todo: inner with arguments")
return false
end
runners["outer"] = function(var,actions)
return link(nil,var.f,nil,nil,actions) -- var.o ?
end
runners["outer with inner"] = function(var,actions)
-- todo: resolve url/file name
return link(nil,var.f,var.inner,var.r,actions)
end
runners["special outer with operation"] = function(var,actions)
local handler = specials[var.special]
return handler and handler(var,actions)
end
runners["special outer"] = function(var,actions)
logs.report("references","todo: special outer")
return false
end
runners["special"] = function(var,actions)
local handler = specials[var.special]
return handler and handler(var,actions)
end
runners["outer with inner with arguments"] = function(var,actions)
logs.report("references","todo: outer with inner with arguments")
return false
end
runners["outer with special and operation and arguments"] = function(var,actions)
logs.report("references","todo: outer with special and operation and arguments")
return false
end
runners["outer with special"] = function(var,actions)
logs.report("references","todo: outer with special")
return false
end
runners["outer with special and operation"] = function(var,actions)
logs.report("references","todo: outer with special and operation")
return false
end
runners["special operation"] = runners["special"]
runners["special operation with arguments"] = runners["special"]
function specials.internal(var,actions) -- better resolve in strc-ref
local i = tonumber(var.operation)
local v = jobreferences.internals[i]
if not v then
-- error
elseif method == "internal" then
-- named
return link(nil,nil,"aut:"..i,v.references.realpage,actions)
else
-- page
return link(nil,nil,nil,v.references.realpage,actions)
end
end
specials.i = specials.internal
function specials.page(var,actions) -- better resolve in strc-ref
local file = var.f
if file then
local f = jobreferences.files.data[file]
if f then
file = f[1] or file
end
return link(nil,file,nil,p or var.operation,actions)
else
local p = jobreferences.pages[var.operation]
if type(p) == "function" then
p = p()
end
return link(nil,nil,nil,p or var.operation,actions)
end
end
function specials.url(var,actions) -- better resolve in strc-ref
local url = var.operation
if url then
local u = jobreferences.urls.data[url]
if u then
local u, f = u[1], u[2]
if f and f ~= "" then
url = u .. "/" .. f
else
url = u
end
end
end
return link(url,nil,var.arguments,nil,actions)
end
function specials.file(var,actions) -- better resolve in strc-ref
local file = var.operation
if file then
local f = jobreferences.files.data[file]
if f then
file = f[1] or file
end
end
return link(nil,file,var.arguments,nil,actions)
end
function specials.fileorurl(var,actions) -- better resolve in strc-ref
local whatever, url, file = var.operation, nil, nil
if whatever then
local w = jobreferences.files.data[whatever]
if w then
file = w[1]
else
w = jobreferences.urls.data[whatever]
if w then
local u, f = w[1], w[2]
if f and f ~= "" then
url = u .. "/" .. f
else
url = u
end
end
end
end
return link(url,file,var.arguments,nil,actions)
end
function specials.program(var,content) -- better resolve in strc-ref
local program = var.operation
if program then
local p = jobreferences.programs[program]
if p then
program = p[1]
end
end
return lpdf.launch(program,var.arguments)
end
function specials.javascript(var)
return lpdf.javascript(var.operation,var.arguments)
end
specials.JS = specials.javascript
local pdf_named = pdfconstant("Named")
executers.importform = pdfdictionary { S = pdf_named, N = pdfconstant("AcroForm:ImportFDF") }
executers.exportform = pdfdictionary { S = pdf_named, N = pdfconstant("AcroForm:ExportFDF") }
executers.first = pdfdictionary { S = pdf_named, N = pdfconstant("FirstPage") }
executers.previous = pdfdictionary { S = pdf_named, N = pdfconstant("PrevPage") }
executers.next = pdfdictionary { S = pdf_named, N = pdfconstant("NextPage") }
executers.last = pdfdictionary { S = pdf_named, N = pdfconstant("LastPage") }
executers.backward = pdfdictionary { S = pdf_named, N = pdfconstant("GoBack") }
executers.forward = pdfdictionary { S = pdf_named, N = pdfconstant("GoForward") }
executers.print = pdfdictionary { S = pdf_named, N = pdfconstant("Print") }
executers.exit = pdfdictionary { S = pdf_named, N = pdfconstant("Quit") }
executers.close = pdfdictionary { S = pdf_named, N = pdfconstant("Close") }
executers.save = pdfdictionary { S = pdf_named, N = pdfconstant("Save") }
executers.savenamed = pdfdictionary { S = pdf_named, N = pdfconstant("SaveAs") }
executers.opennamed = pdfdictionary { S = pdf_named, N = pdfconstant("Open") }
executers.help = pdfdictionary { S = pdf_named, N = pdfconstant("HelpUserGuide") }
executers.toggle = pdfdictionary { S = pdf_named, N = pdfconstant("FullScreen") }
executers.search = pdfdictionary { S = pdf_named, N = pdfconstant("Find") }
executers.searchagain = pdfdictionary { S = pdf_named, N = pdfconstant("FindAgain") }
executers.gotopage = pdfdictionary { S = pdf_named, N = pdfconstant("GoToPage") }
executers.query = pdfdictionary { S = pdf_named, N = pdfconstant("AcroSrch:Query") }
executers.queryagain = pdfdictionary { S = pdf_named, N = pdfconstant("AcroSrch:NextHit") }
executers.fitwidth = pdfdictionary { S = pdf_named, N = pdfconstant("FitWidth") }
executers.fitheight = pdfdictionary { S = pdf_named, N = pdfconstant("FitHeight") }
local function fieldset(arguments)
-- [\dogetfieldset{#1}]
return nil
end
function executers.resetform(arguments)
arguments = (type(arguments) == "table" and arguments) or aux.settings_to_array(arguments)
return pdfdictionary {
S = pdfconstant("ResetForm"),
Field = fieldset(arguments[1])
}
end
local formmethod = "post" -- "get" "post"
local formformat = "xml" -- "xml" "html" "fdf"
-- bit 3 = html bit 6 = xml bit 4 = get
local flags = {
get = {
html = 12, fdf = 8, xml = 40,
},
post = {
html = 4, fdf = 0, xml = 32,
}
}
function executers.submitform(arguments)
arguments = (type(arguments) == "table" and arguments) or aux.settings_to_array(arguments)
local flag = flags[formmethod] or flags.post
flag = (flag and (flag[formformat] or flag.xml)) or 32 -- default: post, xml
return pdfdictionary {
S = pdfconstant("ResetForm"),
F = fieldset(arguments[1]),
Field = fieldset(arguments[2]),
Flags = flag,
-- \PDFsubmitfiller
}
end
function executers.hide(arguments)
return pdfdictionary {
S = pdfconstant("Hide"),
H = true,
T = arguments,
}
end
function executers.show(arguments)
return pdfdictionary {
S = pdfconstant("Hide"),
H = false,
T = arguments,
}
end
local pdf_movie = pdfconstant("Movie")
local pdf_start = pdfconstant("Start")
local pdf_stop = pdfconstant("Stop")
local pdf_resume = pdfconstant("Resume")
local pdf_pause = pdfconstant("Pause")
local function movie_or_sound(operation,arguments)
arguments = (type(arguments) == "table" and arguments) or aux.settings_to_array(arguments)
return pdfdictionary {
S = pdf_movie,
T = format("movie %s",arguments[1] or "noname"),
Operation = operation,
}
end
function executers.startmovie (arguments) return movie_or_sound(pdf_start ,arguments) end
function executers.stopmovie (arguments) return movie_or_sound(pdf_stop ,arguments) end
function executers.resumemovie(arguments) return movie_or_sound(pdf_resume,arguments) end
function executers.pausemovie (arguments) return movie_or_sound(pdf_pause ,arguments) end
function executers.startsound (arguments) return movie_or_sound(pdf_start ,arguments) end
function executers.stopsound (arguments) return movie_or_sound(pdf_stop ,arguments) end
function executers.resumesound(arguments) return movie_or_sound(pdf_resume,arguments) end
function executers.pausesound (arguments) return movie_or_sound(pdf_pause ,arguments) end
function specials.action(var)
local operation = var.operation
if var.operation and operation ~= "" then
local e = executers[operation]
if type(e) == "table" then
return e
elseif type(e) == "function" then
return e(var.arguments)
end
end
end
--~ entry.A = pdfdictionary {
--~ S = pdfconstant("GoTo"),
--~ D = ....
--~ }
local function build(levels,start,parent,method)
local startlevel = levels[start][1]
local i, n = start, 0
local child, entry, m, prev, first, last, f, l
-- to be tested: i can be nil
while i and i <= #levels do
local li = levels[i]
local level, title, reference, open = li[1], li[2], li[3], li[4]
if level == startlevel then
if trace_bookmarks then
logs.report("bookmark","%3i %s%s %s",realpage,rep(" ",level-1),(open and "+") or "-",title)
end
local prev = child
child = pdfreserveobj()
if entry then
entry.Next = child and pdfreference(child)
pdfimmediateobj(prev,tostring(entry))
end
entry = pdfdictionary {
Title = pdfunicode(title),
Parent = parent,
Prev = prev and pdfreference(prev),
}
if method == "internal" then
entry.Dest = "aut:" .. reference.internal
else -- if method == "page" then
entry.Dest = pagedest(reference.realpage)
end
if not first then first, last = child, child end
prev = child
last = prev
n = n + 1
i = i + 1
elseif level < startlevel then
pdfimmediateobj(child,tostring(entry))
return i, n, first, last
elseif i < #levels and level > startlevel then
i, m, f, l = build(levels,i,pdfreference(child),method)
entry.Count = (open and m) or -m
if m > 0 then
entry.First, entry.Last = pdfreference(f), pdfreference(l)
end
else
-- missing intermediate level but ok
i, m, f, l = build(levels,i,pdfreference(child),method)
entry.Count = (open and m) or -m
if m > 0 then
entry.First, entry.Last = pdfreference(f), pdfreference(l)
end
pdfimmediateobj(child,tostring(entry))
return i, n, first, last
end
end
pdfimmediateobj(child,tostring(entry))
return nil, n, first, last
end
function codeinjections.addbookmarks(levels,method)
local parent = pdfreserveobj()
local _, m, first, last = build(levels,1,pdfreference(parent),method or "internal")
local dict = pdfdictionary {
Type = pdfconstant("Outlines"),
First = pdfreference(first),
Last = pdfreference(last),
Count = m,
}
pdfimmediateobj(parent,tostring(dict))
lpdf.addtocatalog("Outlines",lpdf.reference(parent))
end
|