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@@ -0,0 +1,1401 @@
+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"
+}
+
+-- when using rotation: \disabledirectives[refences.sharelinks] (maybe flag links)
+
+-- todo: /AA << WC << ... >> >> : WillClose actions etc
+
+-- internal references are indicated by a number (and turned into <autoprefix><number>)
+-- we only flush internal destinations that are referred
+
+local next, tostring, tonumber, rawget, type = next, tostring, tonumber, rawget, type
+local rep, format, find = string.rep, string.format, string.find
+local min = math.min
+local lpegmatch = lpeg.match
+local formatters = string.formatters
+local sortedkeys, concat = table.sortedkeys, table.concat
+
+local backends, lpdf = backends, lpdf
+
+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 log_destinations = false directives.register("destinations.log", function(v) log_destinations = v end)
+local untex_urls = true directives.register("references.untexurls", function(v) untex_urls = v end)
+
+local report_references = logs.reporter("backend","references")
+local report_destinations = logs.reporter("backend","destinations")
+local report_bookmarks = logs.reporter("backend","bookmarks")
+
+local variables = interfaces.variables
+local v_auto = variables.auto
+local v_page = variables.page
+local v_name = variables.name
+
+local factor = number.dimenfactors.bp
+
+local settings_to_array = utilities.parsers.settings_to_array
+
+local allocate = utilities.storage.allocate
+local setmetatableindex = table.setmetatableindex
+
+local nodeinjections = backends.pdf.nodeinjections
+local codeinjections = backends.pdf.codeinjections
+local registrations = backends.pdf.registrations
+
+local javascriptcode = interactions.javascripts.code
+
+local references = structures.references
+local bookmarks = structures.bookmarks
+
+local flaginternals = references.flaginternals
+local usedinternals = references.usedinternals
+local usedviews = references.usedviews
+
+local runners = references.runners
+local specials = references.specials
+local handlers = references.handlers
+local executers = references.executers
+
+local nodepool = nodes.pool
+
+local new_latelua = nodepool.latelua
+
+local texgetcount = tex.getcount
+
+local jobpositions = job.positions
+local getpos = jobpositions.getpos
+local gethpos = jobpositions.gethpos
+local getvpos = jobpositions.getvpos
+
+local pdfdictionary = lpdf.dictionary
+local pdfarray = lpdf.array
+local pdfreference = lpdf.reference
+local pdfunicode = lpdf.unicode
+local pdfconstant = lpdf.constant
+local pdfnull = lpdf.null
+local pdfaddtocatalog = lpdf.addtocatalog
+local pdfaddtonames = lpdf.addtonames
+local pdfaddtopageattributes = lpdf.addtopageattributes
+local pdfrectangle = lpdf.rectangle
+
+local pdfflushobject
+local pdfshareobjectreference
+local pdfreserveobject
+local pdfpagereference
+local pdfdelayedobject
+local pdfregisterannotation
+
+updaters.register("backend.update.lpdf",function()
+ pdfflushobject = lpdf.flushobject
+ pdfshareobjectreference = lpdf.shareobjectreference
+ pdfreserveobject = lpdf.reserveobject
+ pdfpagereference = lpdf.pagereference
+ pdfdelayedobject = lpdf.delayedobject
+ pdfregisterannotation = lpdf.registerannotation
+end)
+
+-- todo: 3dview
+
+----- pdf_annot = pdfconstant("Annot")
+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_fit = pdfconstant("Fit")
+local pdf_named = pdfconstant("Named")
+
+local autoprefix = "#"
+local usedautoprefixes = { }
+
+local function registerautoprefix(name)
+ local internal = autoprefix .. name
+ if usedautoprefixes[internal] == nil then
+ usedautoprefixes[internal] = false
+ end
+ return internal
+end
+
+local function useautoprefix(name)
+ local internal = autoprefix .. name
+ usedautoprefixes[internal] = true
+ return internal
+end
+
+local function checkautoprefixes(destinations)
+ for k, v in next, usedautoprefixes do
+ if not v then
+ if trace_destinations then
+ report_destinations("flushing unused autoprefix %a",k)
+ end
+ destinations[k] = nil
+ end
+ end
+end
+
+local maxslice = 32 -- could be made configureable ... 64 is also ok
+
+local function pdfmakenametree(list,apply)
+ if not next(list) then
+ return
+ end
+ local slices = { }
+ local sorted = sortedkeys(list)
+ local size = #sorted
+ local maxslice = maxslice
+ if size <= 1.5*maxslice then
+ maxslice = size
+ end
+ for i=1,size,maxslice do
+ local amount = min(i+maxslice-1,size)
+ local names = pdfarray { }
+ local n = 0
+ for j=i,amount do
+ local name = sorted[j]
+ local target = list[name]
+ n = n + 1 ; names[n] = tostring(name)
+ n = n + 1 ; names[n] = apply and apply(target) or target
+ end
+ local first = sorted[i]
+ local last = sorted[amount]
+ local limits = pdfarray {
+ first,
+ last,
+ }
+ local d = pdfdictionary {
+ Names = names,
+ Limits = limits,
+ }
+ slices[#slices+1] = {
+ reference = pdfreference(pdfflushobject(d)),
+ limits = limits,
+ }
+ end
+ local function collectkids(slices,first,last)
+ local f = slices[first]
+ local l = slices[last]
+ if f and l then
+ local k = pdfarray()
+ local n = 0
+ local d = pdfdictionary {
+ Kids = k,
+ Limits = pdfarray {
+ f.limits[1],
+ l.limits[2],
+ },
+ }
+ for i=first,last do
+ n = n + 1 ; k[n] = slices[i].reference
+ end
+ return d
+ end
+ end
+ if #slices == 1 then
+ return slices[1].reference
+ else
+ while true do
+ local size = #slices
+ if size > maxslice then
+ local temp = { }
+ local n = 0
+ for i=1,size,maxslice do
+ local kids = collectkids(slices,i,min(i+maxslice-1,size))
+ if kids then
+ n = n + 1
+ temp[n] = {
+ reference = pdfreference(pdfflushobject(kids)),
+ limits = kids.Limits,
+ }
+ else
+ -- error
+ end
+ end
+ slices = temp
+ else
+ local kids = collectkids(slices,1,size)
+ if kids then
+ return pdfreference(pdfflushobject(kids))
+ else
+ -- error
+ return
+ end
+ end
+ end
+ end
+end
+
+lpdf.makenametree = pdfmakenametree
+
+-- Bah, I hate this kind of features .. anyway, as we have delayed resolving we
+-- only support a document-wide setup and it has to be set before the first one
+-- is used. Also, we default to a non-intrusive gray and the outline is kept
+-- thin without dashing lines. This is as far as I'm prepared to go. This way
+-- it can also be used as a debug feature.
+
+local pdf_border_style = pdfarray { 0, 0, 0 } -- radius radius linewidth
+local pdf_border_color = nil
+local set_border = false
+
+local function pdfborder()
+ set_border = true
+ return pdf_border_style, pdf_border_color
+end
+
+lpdf.border = pdfborder
+
+directives.register("references.border",function(v)
+ if v and not set_border then
+ if type(v) == "string" then
+ local m = attributes.list[attributes.private('color')] or { }
+ local c = m and m[v]
+ local v = c and attributes.colors.value(c)
+ if v then
+ local r = v[3]
+ local g = v[4]
+ local b = v[5]
+ -- if r == g and g == b then
+ -- pdf_border_color = pdfarray { r } -- reduced, not not ... bugged viewers
+ -- else
+ pdf_border_color = pdfarray { r, g, b } -- always rgb
+ -- end
+ end
+ end
+ if not pdf_border_color then
+ pdf_border_color = pdfarray { .6, .6, .6 } -- no reduce to { 0.6 } as there are buggy viewers out there
+ end
+ pdf_border_style = pdfarray { 0, 0, .5 } -- < 0.5 is not show by acrobat (at least not in my version)
+ end
+end)
+
+-- the used and flag code here is somewhat messy in the sense
+-- that it belongs in strc-ref but at the same time depends on
+-- the backend so we keep it here
+
+-- the caching is somewhat memory intense on the one hand but
+-- it saves many small temporary tables so it might pay off
+
+local pagedestinations = setmetatableindex(function(t,k)
+ k = tonumber(k)
+ if not k or k <= 0 then
+ return pdfnull()
+ end
+ local v = rawget(t,k)
+ if v then
+ -- report_references("page number expected, got %s: %a",type(k),k)
+ return v
+ end
+ local v = k > 0 and pdfarray {
+ pdfreference(pdfpagereference(k)),
+ pdf_fit,
+ } or pdfnull()
+ t[k] = v
+ return v
+end)
+
+local pagereferences = setmetatableindex(function(t,k)
+ k = tonumber(k)
+ if not k or k <= 0 then
+ return nil
+ end
+ local v = rawget(t,k)
+ if v then
+ return v
+ end
+ local v = pdfdictionary { -- can be cached
+ S = pdf_goto,
+ D = pagedestinations[k],
+ }
+ t[k] = v
+ return v
+end)
+
+local defaultdestination = pdfarray { 0, pdf_fit }
+
+-- fit is default (see lpdf-nod)
+
+local destinations = { }
+local reported = setmetatableindex("table")
+
+local function pdfregisterdestination(name,reference)
+ local d = destinations[name]
+ if d then
+ if not reported[name][reference] then
+ report_destinations("ignoring duplicate destination %a with reference %a",name,reference)
+ reported[name][reference] = true
+ end
+ else
+ destinations[name] = reference
+ end
+end
+
+lpdf.registerdestination = pdfregisterdestination
+
+logs.registerfinalactions(function()
+ if log_destinations and next(destinations) then
+ local report = logs.startfilelogging("references","used destinations")
+ local n = 0
+ for destination, pagenumber in table.sortedhash(destinations) do
+ report("% 4i : %-5s : %s",pagenumber,usedviews[destination] or defaultview,destination)
+ n = n + 1
+ end
+ logs.stopfilelogging()
+ report_destinations("%s destinations saved in log file",n)
+ end
+end)
+
+local function pdfdestinationspecification()
+ if next(destinations) then -- safeguard
+ checkautoprefixes(destinations)
+ local r = pdfmakenametree(destinations,pdfreference)
+ if r then
+ pdfaddtonames("Dests",r)
+ end
+ if not log_destinations then
+ destinations = nil
+ end
+ end
+end
+
+lpdf.destinationspecification = pdfdestinationspecification
+
+lpdf.registerdocumentfinalizer(pdfdestinationspecification,"collect destinations")
+
+-- todo
+
+local destinations = { }
+
+local f_xyz = formatters["<< /D [ %i 0 R /XYZ %.6N %.6N null ] >>"]
+local f_fit = formatters["<< /D [ %i 0 R /Fit ] >>"]
+local f_fitb = formatters["<< /D [ %i 0 R /FitB ] >>"]
+local f_fith = formatters["<< /D [ %i 0 R /FitH %.6N ] >>"]
+local f_fitv = formatters["<< /D [ %i 0 R /FitV %.6N ] >>"]
+local f_fitbh = formatters["<< /D [ %i 0 R /FitBH %.6N ] >>"]
+local f_fitbv = formatters["<< /D [ %i 0 R /FitBV %.6N ] >>"]
+local f_fitr = formatters["<< /D [ %i 0 R /FitR %.6N %.6N %.6N %.6N ] >>"]
+
+local v_standard = variables.standard
+local v_frame = variables.frame
+local v_width = variables.width
+local v_minwidth = variables.minwidth
+local v_height = variables.height
+local v_minheight = variables.minheight
+local v_fit = variables.fit
+local v_tight = variables.tight
+
+-- nicer is to create dictionaries and set properties but it's a bit overkill
+
+-- The problem with the following settings is that they are guesses: we never know
+-- if a box is part of something larger that needs to be in view, or that we are
+-- dealing with a vbox or vtop so the used h/d values cannot be trusted in a tight
+-- view. Of course some decent additional offset would be nice so maybe i'll add
+-- that some day. I never use anything else than 'fit' anyway as I think that the
+-- document should fit the device (and vice versa). In fact, with todays swipe
+-- and finger zooming this whole view is rather useless and as with any zooming
+-- one looses the overview and keeps zooming.
+
+-- todo: scaling
+
+-- local destinationactions = {
+-- [v_standard] = function(r,w,h,d) return f_xyz (r,gethpos()*factor,(getvpos()+h)*factor) end, -- local left,top with no zoom
+-- [v_frame] = function(r,w,h,d) return f_fitr (r,pdfrectangle(w,h,d)) end, -- fit rectangle in window
+-- [v_width] = function(r,w,h,d) return f_fith (r,(getvpos()+h)*factor) end, -- top coordinate, fit width of page in window
+-- [v_minwidth] = function(r,w,h,d) return f_fitbh(r,(getvpos()+h)*factor) end, -- top coordinate, fit width of content in window
+-- [v_height] = function(r,w,h,d) return f_fitv (r,gethpos()*factor) end, -- left coordinate, fit height of page in window
+-- [v_minheight] = function(r,w,h,d) return f_fitbv(r,gethpos()*factor) end, -- left coordinate, fit height of content in window [v_fit] = f_fit, -- fit page in window
+-- [v_tight] = f_fitb, -- fit content in window
+-- [v_fit] = f_fit,
+-- }
+
+local destinationactions = {
+ [v_standard] = function(r,w,h,d,o) -- local left,top with no zoom
+ local tx, ty = getpos()
+ return f_xyz(r,tx*factor,(ty+h+2*o)*factor) -- we can assume margins
+ end,
+ [v_frame] = function(r,w,h,d,o) -- fit rectangle in window
+ return f_fitr(r,pdfrectangle(w,h,d,o))
+ end,
+ [v_width] = function(r,w,h,d,o) -- top coordinate, fit width of page in window
+ return f_fith(r,(getvpos()+h+o)*factor)
+ end,
+ [v_minwidth] = function(r,w,h,d,o) -- top coordinate, fit width of content in window
+ return f_fitbh(r,(getvpos()+h+o)*factor)
+ end,
+ [v_height] = function(r,w,h,d,o) -- left coordinate, fit height of page in window
+ return f_fitv(r,(gethpos())*factor)
+ end,
+ [v_minheight] = function(r,w,h,d,o) -- left coordinate, fit height of content in window
+ return f_fitbv(r,(gethpos())*factor)
+ end,
+ [v_tight] = f_fitb, -- fit content in window
+ [v_fit] = f_fit, -- fit content in window
+}
+
+local mapping = {
+ [v_standard] = v_standard, xyz = v_standard,
+ [v_frame] = v_frame, fitr = v_frame,
+ [v_width] = v_width, fith = v_width,
+ [v_minwidth] = v_minwidth, fitbh = v_minwidth,
+ [v_height] = v_height, fitv = v_height,
+ [v_minheight] = v_minheight, fitbv = v_minheight,
+ [v_fit] = v_fit, fit = v_fit,
+ [v_tight] = v_tight, fitb = v_tight,
+}
+
+local defaultview = v_fit
+local defaultaction = destinationactions[defaultview]
+local offset = 0 -- 65536*5
+
+directives.register("destinations.offset", function(v)
+ offset = string.todimen(v) or 0
+end)
+
+-- A complication is that we need to use named destinations when we have views so we
+-- end up with a mix. A previous versions just output multiple destinations but now
+-- that we moved all to here we can be more sparse.
+
+local pagedestinations = setmetatableindex(function(t,k) -- not the same as the one above!
+ local v = pdfdelayedobject(f_fit(k))
+ t[k] = v
+ return v
+end)
+
+local function flushdestination(specification)
+ local names = specification.names
+ local view = specification.view
+ local r = pdfpagereference(texgetcount("realpageno"))
+ if (references.innermethod ~= v_name) and (view == defaultview or not view or view == "") then
+ r = pagedestinations[r]
+ else
+ local action = view and destinationactions[view] or defaultaction
+ r = pdfdelayedobject(action(r,specification.width,specification.height,specification.depth,offset))
+ end
+ for n=1,#names do
+ local name = names[n]
+ if name then
+ pdfregisterdestination(name,r)
+ end
+ end
+end
+
+function nodeinjections.destination(width,height,depth,names,view)
+ -- todo check if begin end node / was comment
+ view = view and mapping[view] or defaultview
+ if trace_destinations then
+ report_destinations("width %p, height %p, depth %p, names %|t, view %a",width,height,depth,names,view)
+ end
+ local method = references.innermethod
+ local noview = view == defaultview
+ local doview = false
+ -- we could save some aut's by using a name when given but it doesn't pay off apart
+ -- from making the code messy and tracing hard .. we only save some destinations
+ -- which we already share anyway
+ if method == v_page then
+ for n=1,#names do
+ local name = names[n]
+ local used = usedviews[name]
+ if used and used ~= true then
+ -- already done, maybe a warning
+ elseif type(name) == "number" then
+ -- if noview then
+ -- usedviews[name] = view
+ -- names[n] = false
+ -- else
+ usedviews[name] = view
+ names[n] = false
+ -- end
+ else
+ usedviews[name] = view
+ end
+ end
+ elseif method == v_name then
+ for n=1,#names do
+ local name = names[n]
+ local used = usedviews[name]
+ if used and used ~= true then
+ -- already done, maybe a warning
+ elseif type(name) == "number" then
+ local used = usedinternals[name]
+ usedviews[name] = view
+ names[n] = registerautoprefix(name)
+ doview = true
+ else
+ usedviews[name] = view
+ doview = true
+ end
+ end
+ else
+ for n=1,#names do
+ local name = names[n]
+ if usedviews[name] then
+ -- already done, maybe a warning
+ elseif type(name) == "number" then
+ if noview then
+ usedviews[name] = view
+ names[n] = false
+ else
+ local used = usedinternals[name]
+ if used and used ~= defaultview then
+ usedviews[name] = view
+ names[n] = registerautoprefix(name)
+ doview = true
+ else
+ names[n] = false
+ end
+ end
+ else
+ usedviews[name] = view
+ doview = true
+ end
+ end
+ end
+ if doview then
+ return new_latelua {
+ action = flushdestination,
+ width = width,
+ height = height,
+ depth = depth,
+ names = names,
+ view = view,
+ }
+ end
+end
+
+-- we could share dictionaries ... todo
+
+local function pdflinkpage(page)
+ return pagereferences[page]
+end
+
+local function pdflinkinternal(internal,page)
+ -- local method = references.innermethod
+ if internal then
+ flaginternals[internal] = true -- for bookmarks and so
+ local used = usedinternals[internal]
+ if used == defaultview or used == true then
+ return pagereferences[page]
+ else
+ if type(internal) ~= "string" then
+ internal = useautoprefix(internal)
+ end
+ return pdfdictionary {
+ S = pdf_goto,
+ D = internal,
+ }
+ end
+ else
+ return pagereferences[page]
+ end
+end
+
+local function pdflinkname(destination,internal,page)
+ local method = references.innermethod
+ if method == v_auto then
+ local used = defaultview
+ if internal then
+ flaginternals[internal] = true -- for bookmarks and so
+ used = usedinternals[internal] or defaultview
+ end
+ if used == defaultview then -- or used == true then
+ return pagereferences[page]
+ else
+ return pdfdictionary {
+ S = pdf_goto,
+ D = destination,
+ }
+ end
+ elseif method == v_name then
+ -- flaginternals[internal] = true -- for bookmarks and so
+ return pdfdictionary {
+ S = pdf_goto,
+ D = destination,
+ }
+ else
+ return pagereferences[page]
+ end
+end
+
+-- annotations
+
+local function pdffilelink(filename,destination,page,actions)
+ if not filename or filename == "" or file.basename(filename) == tex.jobname then
+ return false
+ end
+ filename = file.addsuffix(filename,"pdf")
+ if (not destination or destination == "") or (references.outermethod == v_page) then
+ destination = pdfarray { (page or 1) - 1, pdf_fit }
+ end
+ return pdfdictionary {
+ S = pdf_gotor, -- can also be pdf_launch
+ F = filename,
+ D = destination or defaultdestination,
+ NewWindow = actions.newwindow and true or nil,
+ }
+end
+
+local untex = references.urls.untex
+
+local function pdfurllink(url,destination,page)
+ if not url or url == "" then
+ return false
+ end
+ if untex_urls then
+ url = untex(url) -- last minute cleanup of \* and spaces
+ end
+ if destination and destination ~= "" then
+ url = url .. "#" .. destination
+ end
+ return pdfdictionary {
+ S = pdf_uri,
+ URI = url,
+ }
+end
+
+local function pdflaunch(program,parameters)
+ if not program or program == "" then
+ return false
+ end
+ return pdfdictionary {
+ S = pdf_launch,
+ F = program,
+ D = ".",
+ P = parameters ~= "" and parameters or nil
+ }
+end
+
+local function pdfjavascript(name,arguments)
+ local script = javascriptcode(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
+ 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 action == what then
+ -- ignore this one, else we get a loop
+ elseif what then
+ action.Next = what
+ action = what
+ else
+ -- error
+ return nil
+ end
+ end
+ return first, actions.n or #actions
+ end
+ end
+end
+
+lpdf.action = pdfaction
+
+function codeinjections.prerollreference(actions) -- share can become option
+ if actions then
+ local main, n = pdfaction(actions)
+ if main then
+ local bs, bc = pdfborder()
+ main = pdfdictionary {
+ Subtype = pdf_link,
+ -- Border = bs,
+ Border = pdfshareobjectreference(bs),
+ C = bc,
+ H = (not actions.highlight and pdf_n) or nil,
+ A = pdfshareobjectreference(main),
+ F = 4, -- print (mandate in pdf/a)
+ }
+ return main("A"), n
+ end
+ end
+end
+
+-- local function use_normal_annotations()
+--
+-- local function reference(width,height,depth,prerolled) -- keep this one
+-- if prerolled then
+-- if trace_references then
+-- report_references("width %p, height %p, depth %p, prerolled %a",width,height,depth,prerolled)
+-- end
+-- return pdfannotation_node(width,height,depth,prerolled)
+-- end
+-- end
+--
+-- local function finishreference()
+-- end
+--
+-- return reference, finishreference
+--
+-- end
+
+-- eventually we can do this for special refs only
+
+local hashed = { }
+local nofunique = 0
+local nofused = 0
+local nofspecial = 0
+local share = true
+
+local f_annot = formatters["<< /Type /Annot %s /Rect [ %.6N %.6N %.6N %.6N ] >>"]
+local f_quadp = formatters["<< /Type /Annot %s /QuadPoints [ %s ] /Rect [ %.6N %.6N %.6N %.6N ] >>"]
+
+directives.register("references.sharelinks", function(v)
+ share = v
+end)
+
+setmetatableindex(hashed,function(t,k)
+ local v = pdfdelayedobject(k)
+ if share then
+ t[k] = v
+ end
+ nofunique = nofunique + 1
+ return v
+end)
+
+local function toquadpoints(paths)
+ local t, n = { }, 0
+ for i=1,#paths do
+ local path = paths[i]
+ local size = #path
+ for j=1,size do
+ local p = path[j]
+ n = n + 1 ; t[n] = p[1]
+ n = n + 1 ; t[n] = p[2]
+ end
+ local m = size % 4
+ if m > 0 then
+ local p = path[size]
+ for j=size+1,m do
+ n = n + 1 ; t[n] = p[1]
+ n = n + 1 ; t[n] = p[2]
+ end
+ end
+ end
+ return concat(t," ")
+end
+
+local function finishreference(specification)
+ local prerolled = specification.prerolled
+ local quadpoints = specification.mesh
+ local llx, lly,
+ urx, ury = pdfrectangle(specification.width,specification.height,specification.depth)
+ local specifier = nil
+ if quadpoints and #quadpoints > 0 then
+ specifier = f_quadp(prerolled,toquadpoints(quadpoints),llx,lly,urx,ury)
+ else
+ specifier = f_annot(prerolled,llx,lly,urx,ury)
+ end
+ nofused = nofused + 1
+ return pdfregisterannotation(hashed[specifier])
+end
+
+local function finishannotation(specification)
+ local prerolled = specification.prerolled
+ local objref = specification.objref
+ if type(prerolled) == "function" then
+ prerolled = prerolled()
+ end
+ local annot = f_annot(prerolled,pdfrectangle(specification.width,specification.height,specification.depth))
+ if objref then
+ pdfdelayedobject(annot,objref)
+ else
+ objref = pdfdelayedobject(annot)
+ end
+ nofspecial = nofspecial + 1
+ return pdfregisterannotation(objref)
+end
+
+function nodeinjections.reference(width,height,depth,prerolled,mesh)
+ if prerolled then
+ if trace_references then
+ report_references("link: width %p, height %p, depth %p, prerolled %a",width,height,depth,prerolled)
+ end
+ return new_latelua {
+ action = finishreference,
+ width = width,
+ height = height,
+ depth = depth,
+ prerolled = prerolled,
+ mesh = mesh,
+ }
+ end
+end
+
+function nodeinjections.annotation(width,height,depth,prerolled,objref)
+ if prerolled then
+ if trace_references then
+ report_references("special: width %p, height %p, depth %p, prerolled %a",width,height,depth,
+ type(prerolled) == "string" and prerolled or "-")
+ end
+ return new_latelua {
+ action = finishannotation,
+ width = width,
+ height = height,
+ depth = depth,
+ prerolled = prerolled,
+ objref = objref or false,
+ }
+ end
+end
+
+-- beware, we register during a latelua sweep so we have to make sure that
+-- we finalize after that (also in a latelua for the moment as we have no
+-- callback yet)
+
+local annotations = nil
+
+function lpdf.registerannotation(n)
+ if annotations then
+ annotations[#annotations+1] = pdfreference(n)
+ else
+ annotations = pdfarray { pdfreference(n) } -- no need to use lpdf.array cum suis
+ end
+end
+
+pdfregisterannotation = lpdf.registerannotation
+
+function lpdf.annotationspecification()
+ if annotations then
+ local r = pdfdelayedobject(tostring(annotations)) -- delayed so okay in latelua
+ if r then
+ pdfaddtopageattributes("Annots",pdfreference(r))
+ end
+ annotations = nil
+ end
+end
+
+lpdf.registerpagefinalizer(lpdf.annotationspecification,"finalize annotations")
+
+statistics.register("pdf annotations", function()
+ if nofused > 0 or nofspecial > 0 then
+ return format("%s links (%s unique), %s special",nofused,nofunique,nofspecial)
+ else
+ return nil
+ end
+end)
+
+-- runners and specials
+
+local splitter = lpeg.splitat(",",true)
+
+runners["inner"] = function(var,actions)
+ local internal = false
+ local name = nil
+ local method = references.innermethod
+ local vi = var.i
+ local page = var.r
+ if vi then
+ local vir = vi.references
+ if vir then
+ -- todo: no need for it when we have a real reference ... although we need
+ -- this mess for prefixes anyway
+ local reference = vir.reference
+ if reference and reference ~= "" then
+ reference = lpegmatch(splitter,reference) or reference
+ var.inner = reference
+ local prefix = var.p
+ if prefix and prefix ~= "" then
+ var.prefix = prefix
+ name = prefix .. ":" .. reference
+ else
+ name = reference
+ end
+ end
+ internal = vir.internal
+ if internal then
+ flaginternals[internal] = true
+ end
+ end
+ end
+ if name then
+ return pdflinkname(name,internal,page)
+ elseif internal then
+ return pdflinkinternal(internal,page)
+ elseif page then
+ return pdflinkpage(page)
+ else
+ -- real bad
+ end
+end
+
+runners["inner with arguments"] = function(var,actions)
+ report_references("todo: inner with arguments")
+ return false
+end
+
+runners["outer"] = function(var,actions)
+ local file, url = references.checkedfileorurl(var.outer,var.outer)
+ if file then
+ return pdffilelink(file,var.arguments,nil,actions)
+ elseif url then
+ return pdfurllink(url,var.arguments,nil,actions)
+ end
+end
+
+runners["outer with inner"] = function(var,actions)
+ return pdffilelink(references.checkedfile(var.outer),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)
+ 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)
+ report_references("todo: outer with inner with arguments")
+ return false
+end
+
+runners["outer with special and operation and arguments"] = function(var,actions)
+ report_references("todo: outer with special and operation and arguments")
+ return false
+end
+
+runners["outer with special"] = function(var,actions)
+ report_references("todo: outer with special")
+ return false
+end
+
+runners["outer with special and operation"] = function(var,actions)
+ report_references("todo: outer with special and operation")
+ return false
+end
+
+runners["special operation"] = runners["special"]
+runners["special operation with arguments"] = runners["special"]
+
+local reported = { }
+
+function specials.internal(var,actions) -- better resolve in strc-ref
+ local o = var.operation
+ local i = o and tonumber(o)
+ local v = i and references.internals[i]
+ if v then
+ flaginternals[i] = true -- also done in pdflinkinternal
+ return pdflinkinternal(i,v.references.realpage)
+ end
+ local v = i or o or "<unset>"
+ if not reported[v] then
+ report_references("no internal reference %a",v)
+ reported[v] = true
+ end
+end
+
+-- realpage already resolved
+
+specials.i = specials.internal
+
+local pages = references.pages
+
+function specials.page(var,actions)
+ local file = var.f
+ if file then
+ return pdffilelink(references.checkedfile(file),nil,var.operation,actions)
+ else
+ local p = var.r
+ if not p then -- todo: call special from reference code
+ p = pages[var.operation]
+ if type(p) == "function" then -- double
+ p = p()
+ else
+ p = references.realpageofpage(tonumber(p))
+ end
+ end
+ return pdflinkpage(p or var.operation)
+ end
+end
+
+function specials.realpage(var,actions)
+ local file = var.f
+ if file then
+ return pdffilelink(references.checkedfile(file),nil,var.operation,actions)
+ else
+ return pdflinkpage(var.operation)
+ end
+end
+
+function specials.userpage(var,actions)
+ local file = var.f
+ if file then
+ return pdffilelink(references.checkedfile(file),nil,var.operation,actions)
+ else
+ local p = var.r
+ if not p then -- todo: call special from reference code
+ p = var.operation
+ if p then -- no function and special check here. only numbers
+ p = references.realpageofpage(tonumber(p))
+ end
+ -- if p then
+ -- var.r = p
+ -- end
+ end
+ return pdflinkpage(p or var.operation)
+ end
+end
+
+function specials.deltapage(var,actions)
+ local p = tonumber(var.operation)
+ if p then
+ p = references.checkedrealpage(p + texgetcount("realpageno"))
+ return pdflinkpage(p)
+ end
+end
+
+-- sections
+
+function specials.section(var,actions)
+ -- a bit duplicate
+ local sectionname = var.arguments
+ local destination = var.operation
+ local internal = structures.sections.internalreference(sectionname,destination)
+ if internal then
+ var.special = "internal"
+ var.operation = internal
+ var.arguments = nil
+ return specials.internal(var,actions)
+ end
+end
+
+-- todo, do this in references namespace ordered instead (this is an experiment)
+
+local splitter = lpeg.splitat(":")
+
+function specials.order(var,actions) -- references.specials !
+ local operation = var.operation
+ if operation then
+ local kind, name, n = lpegmatch(splitter,operation)
+ local order = structures.lists.ordered[kind]
+ order = order and order[name]
+ local v = order[tonumber(n)]
+ local r = v and v.references.realpage
+ if r then
+ var.operation = r -- brrr, but test anyway
+ return specials.page(var,actions)
+ end
+ end
+end
+
+function specials.url(var,actions)
+ return pdfurllink(references.checkedurl(var.operation),var.arguments,nil,actions)
+end
+
+function specials.file(var,actions)
+ return pdffilelink(references.checkedfile(var.operation),var.arguments,nil,actions)
+end
+
+function specials.fileorurl(var,actions)
+ local file, url = references.checkedfileorurl(var.operation,var.operation)
+ if file then
+ return pdffilelink(file,var.arguments,nil,actions)
+ elseif url then
+ return pdfurllink(url,var.arguments,nil,actions)
+ end
+end
+
+function specials.program(var,content)
+ local program = references.checkedprogram(var.operation)
+ return pdflaunch(program,var.arguments)
+end
+
+function specials.javascript(var)
+ return pdfjavascript(var.operation,var.arguments)
+end
+
+specials.JS = specials.javascript
+
+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 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 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("SubmitForm"),
+ F = arguments[1],
+ Field = fieldset(arguments[2]),
+ Flags = flag,
+ -- \PDFsubmitfiller
+ }
+end
+
+local pdf_hide = pdfconstant("Hide")
+
+function executers.hide(arguments)
+ return pdfdictionary {
+ S = pdf_hide,
+ H = true,
+ T = arguments,
+ }
+end
+
+function executers.show(arguments)
+ return pdfdictionary {
+ S = pdf_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 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
+
+local function build(levels,start,parent,method,nested)
+ local startlevel = levels[start].level
+ local noflevels = #levels
+ local i = start
+ local n = 0
+ local child, entry, m, prev, first, last, f, l
+ while i and i <= noflevels do
+ local current = levels[i]
+ if current.usedpage == false then
+ -- safeguard
+ i = i + 1
+ else
+ local level = current.level
+ local title = current.title
+ local reference = current.reference
+ local opened = current.opened
+ local reftype = type(reference)
+ local block = nil
+ local variant = "unknown"
+ if reftype == "table" then
+ -- we're okay
+ variant = "list"
+ block = reference.block
+ realpage = reference.realpage
+ elseif reftype == "string" then
+ local resolved = references.identify("",reference)
+ realpage = resolved and structures.references.setreferencerealpage(resolved) or 0
+ if realpage > 0 then
+ variant = "realpage"
+ realpage = realpage
+ reference = structures.pages.collected[realpage]
+ block = reference and reference.block
+ end
+ elseif reftype == "number" then
+ if reference > 0 then
+ variant = "realpage"
+ realpage = reference
+ reference = structures.pages.collected[realpage]
+ block = reference and reference.block
+ end
+ else
+ -- error
+ end
+ current.block = block
+ if variant == "unknown" then
+ -- error, ignore
+ i = i + 1
+ -- elseif (level < startlevel) or (i > 1 and block ~= levels[i-1].reference.block) then
+ elseif (level < startlevel) or (i > 1 and block ~= levels[i-1].block) then
+ if nested then -- could be an option but otherwise we quit too soon
+ if entry then
+ pdfflushobject(child,entry)
+ else
+ report_bookmarks("error 1")
+ end
+ return i, n, first, last
+ else
+ report_bookmarks("confusing level change at level %a around %a",level,title)
+ startlevel = level
+ end
+ end
+ if level == startlevel then
+ if trace_bookmarks then
+ report_bookmarks("%3i %w%s %s",realpage,(level-1)*2,(opened and "+") or "-",title)
+ end
+ local prev = child
+ child = pdfreserveobject()
+ if entry then
+ entry.Next = child and pdfreference(child)
+ pdfflushobject(prev,entry)
+ end
+ local action = nil
+ if variant == "list" then
+ action = pdflinkinternal(reference.internal,reference.realpage)
+ elseif variant == "realpage" then
+ action = pagereferences[realpage]
+ else
+ -- hm, what to do
+ end
+ entry = pdfdictionary {
+ Title = pdfunicode(title),
+ Parent = parent,
+ Prev = prev and pdfreference(prev),
+ A = action,
+ }
+ -- entry.Dest = pdflinkinternal(reference.internal,reference.realpage)
+ if not first then
+ first, last = child, child
+ end
+ prev = child
+ last = prev
+ n = n + 1
+ i = i + 1
+ elseif i < noflevels and level > startlevel then
+ i, m, f, l = build(levels,i,pdfreference(child),method,true)
+ if entry then
+ entry.Count = (opened and m) or -m
+ if m > 0 then
+ entry.First = pdfreference(f)
+ entry.Last = pdfreference(l)
+ end
+ else
+ report_bookmarks("error 2")
+ end
+ else
+ -- missing intermediate level but ok
+ i, m, f, l = build(levels,i,pdfreference(child),method,true)
+ if entry then
+ entry.Count = (opened and m) or -m
+ if m > 0 then
+ entry.First = pdfreference(f)
+ entry.Last = pdfreference(l)
+ end
+ pdfflushobject(child,entry)
+ else
+ report_bookmarks("error 3")
+ end
+ return i, n, first, last
+ end
+ end
+ end
+ pdfflushobject(child,entry)
+ return nil, n, first, last
+end
+
+function codeinjections.addbookmarks(levels,method)
+ if levels and #levels > 0 then
+ local parent = pdfreserveobject()
+ local _, m, first, last = build(levels,1,pdfreference(parent),method or "internal",false)
+ local dict = pdfdictionary {
+ Type = pdfconstant("Outlines"),
+ First = pdfreference(first),
+ Last = pdfreference(last),
+ Count = m,
+ }
+ pdfflushobject(parent,dict)
+ pdfaddtocatalog("Outlines",lpdf.reference(parent))
+ end
+end
+
+-- this could also be hooked into the frontend finalizer
+
+lpdf.registerdocumentfinalizer(function() bookmarks.place() end,1,"bookmarks") -- hm, why indirect call