1if not modules then modules = { } end modules ['lpdf-mis'] = {
2 version = 1.001,
3 comment = "companion to lpdf-ini.mkiv",
4 author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
5 copyright = "PRAGMA ADE / ConTeXt Development Team",
6 license = "see context related readme files"
7}
8
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17
18local next, tostring, type = next, tostring, type
19local format, gsub, formatters = string.format, string.gsub, string.formatters
20local concat, flattened = table.concat, table.flattened
21local settings_to_array = utilities.parsers.settings_to_array
22
23local backends, lpdf, nodes = backends, lpdf, nodes
24
25local nodeinjections = backends.pdf.nodeinjections
26local codeinjections = backends.pdf.codeinjections
27local registrations = backends.pdf.registrations
28
29local nuts = nodes.nuts
30local copy_node = nuts.copy
31
32local nodepool = nuts.pool
33local pageliteral = nodepool.pageliteral
34local register = nodepool.register
35
36local pdfdictionary = lpdf.dictionary
37local pdfarray = lpdf.array
38local pdfconstant = lpdf.constant
39local pdfreference = lpdf.reference
40local pdfunicode = lpdf.unicode
41local pdfverbose = lpdf.verbose
42local pdfstring = lpdf.string
43local pdfflushobject = lpdf.flushobject
44local pdfflushstreamobject = lpdf.flushstreamobject
45local pdfaction = lpdf.action
46local pdfminorversion = lpdf.minorversion
47
48local formattedtimestamp = lpdf.pdftimestamp
49local adddocumentextgstate = lpdf.adddocumentextgstate
50local addtocatalog = lpdf.addtocatalog
51local addtoinfo = lpdf.addtoinfo
52local addtopageattributes = lpdf.addtopageattributes
53local addtonames = lpdf.addtonames
54
55local pdfgetmetadata = lpdf.getmetadata
56
57local texset = tex.set
58
59local variables = interfaces.variables
60
61local v_stop = variables.stop
62local v_none = variables.none
63local v_max = variables.max
64local v_bookmark = variables.bookmark
65local v_fit = variables.fit
66local v_doublesided = variables.doublesided
67local v_singlesided = variables.singlesided
68local v_default = variables.default
69local v_auto = variables.auto
70local v_fixed = variables.fixed
71local v_landscape = variables.landscape
72local v_portrait = variables.portrait
73local v_page = variables.page
74local v_paper = variables.paper
75local v_attachment = variables.attachment
76local v_layer = variables.layer
77local v_lefttoright = variables.lefttoright
78local v_righttoleft = variables.righttoleft
79local v_title = variables.title
80local v_nomenubar = variables.nomenubar
81
82local positive = register(pageliteral("/GSpositive gs"))
83local negative = register(pageliteral("/GSnegative gs"))
84local overprint = register(pageliteral("/GSoverprint gs"))
85local knockout = register(pageliteral("/GSknockout gs"))
86
87local omitextraboxes = false
88
89directives.register("backend.omitextraboxes", function(v) omitextraboxes = v end)
90
91local function initializenegative()
92 local a = pdfarray { 0, 1 }
93 local g = pdfconstant("ExtGState")
94 local d = pdfdictionary {
95 FunctionType = 4,
96 Range = a,
97 Domain = a,
98 }
99 local negative = pdfdictionary { Type = g, TR = pdfreference(pdfflushstreamobject("{ 1 exch sub }",d)) }
100 local positive = pdfdictionary { Type = g, TR = pdfconstant("Identity") }
101 adddocumentextgstate("GSnegative", pdfreference(pdfflushobject(negative)))
102 adddocumentextgstate("GSpositive", pdfreference(pdfflushobject(positive)))
103 initializenegative = nil
104end
105
106local function initializeoverprint()
107 local g = pdfconstant("ExtGState")
108 local knockout = pdfdictionary { Type = g, OP = false, OPM = 0 }
109 local overprint = pdfdictionary { Type = g, OP = true, OPM = 1 }
110 adddocumentextgstate("GSknockout", pdfreference(pdfflushobject(knockout)))
111 adddocumentextgstate("GSoverprint", pdfreference(pdfflushobject(overprint)))
112 initializeoverprint = nil
113end
114
115function nodeinjections.overprint()
116 if initializeoverprint then initializeoverprint() end
117 return copy_node(overprint)
118end
119function nodeinjections.knockout ()
120 if initializeoverprint then initializeoverprint() end
121 return copy_node(knockout)
122end
123
124function nodeinjections.positive()
125 if initializenegative then initializenegative() end
126 return copy_node(positive)
127end
128function nodeinjections.negative()
129 if initializenegative then initializenegative() end
130 return copy_node(negative)
131end
132
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144
145local openpage, closepage, opendocument, closedocument
146
147function codeinjections.registerdocumentopenaction(open)
148 opendocument = open
149end
150
151function codeinjections.registerdocumentcloseaction(close)
152 closedocument = close
153end
154
155function codeinjections.registerpageopenaction(open)
156 openpage = open
157end
158
159function codeinjections.registerpagecloseaction(close)
160 closepage = close
161end
162
163local function flushdocumentactions()
164 if opendocument then
165 addtocatalog("OpenAction",pdfaction(opendocument))
166 end
167 if closedocument then
168 addtocatalog("CloseAction",pdfaction(closedocument))
169 end
170end
171
172local function flushpageactions()
173 if openpage or closepage then
174 local d = pdfdictionary()
175 if openpage then
176 d.O = pdfaction(openpage)
177 end
178 if closepage then
179 d.C = pdfaction(closepage)
180 end
181 addtopageattributes("AA",d)
182 end
183end
184
185lpdf.registerpagefinalizer (flushpageactions, "page actions")
186lpdf.registerdocumentfinalizer(flushdocumentactions,"document actions")
187
188
189
190local identity = { }
191
192function codeinjections.setupidentity(specification)
193 for k, v in next, specification do
194 if v ~= "" then
195 identity[k] = v
196 end
197 end
198end
199
200function codeinjections.getidentityvariable(name)
201 return identity[name]
202end
203
204local done = false
205
206local function setupidentity()
207 if not done then
208 local metadata = pdfgetmetadata()
209 local creator = metadata.creator
210 local version = metadata.contextversion
211 local time = metadata.time
212 local jobname = environment.jobname or tex.jobname or "unknown"
213
214 local title = identity.title
215 if not title or title == "" then
216 title = tex.jobname
217 end
218 addtoinfo("Title", pdfunicode(title), title)
219 local subtitle = identity.subtitle or ""
220 if subtitle ~= "" then
221 addtoinfo("Subject", pdfunicode(subtitle), subtitle)
222 end
223 local author = identity.author or ""
224 if author ~= "" then
225 addtoinfo("Author", pdfunicode(author), author)
226 end
227 addtoinfo("Creator", pdfunicode(creator), creator)
228 addtoinfo("CreationDate", pdfstring(formattedtimestamp(time)))
229 local date = identity.date or ""
230 local pdfdate = date and formattedtimestamp(date)
231 if pdfdate then
232 addtoinfo("ModDate", pdfstring(pdfdate), date)
233 else
234
235
236 addtoinfo("ModDate", pdfstring(formattedtimestamp(time)),time)
237 end
238 local keywords = identity.keywords or ""
239 if keywords ~= "" then
240 keywords = concat(settings_to_array(keywords), " ")
241 addtoinfo("Keywords", pdfunicode(keywords), keywords)
242 end
243 local id = lpdf.id()
244 addtoinfo("ID", pdfstring(id), id)
245
246 addtoinfo("ConTeXt.Version",version)
247 addtoinfo("ConTeXt.Time",os.date("%Y-%m-%d %H:%M"))
248 addtoinfo("ConTeXt.Jobname",jobname)
249 addtoinfo("ConTeXt.Url","www.pragma-ade.com")
250 addtoinfo("ConTeXt.Support","contextgarden.net")
251 addtoinfo("TeX.Support","tug.org")
252
253 done = true
254 else
255
256 end
257end
258
259lpdf.registerpagefinalizer(setupidentity,"identity")
260
261
262
263
264
265local function flushjavascripts()
266 local t = interactions.javascripts.flushpreambles()
267 if #t > 0 then
268 local a = pdfarray()
269 local pdf_javascript = pdfconstant("JavaScript")
270 for i=1,#t do
271 local ti = t[i]
272 local name = ti[1]
273 local script = ti[2]
274 local j = pdfdictionary {
275 S = pdf_javascript,
276 JS = pdfreference(pdfflushstreamobject(script)),
277 }
278 a[#a+1] = pdfstring(name)
279 a[#a+1] = pdfreference(pdfflushobject(j))
280 end
281 addtonames("JavaScript",pdfreference(pdfflushobject(pdfdictionary{ Names = a })))
282 end
283end
284
285lpdf.registerdocumentfinalizer(flushjavascripts,"javascripts")
286
287
288
289local plusspecs = {
290 [v_max] = {
291 mode = "FullScreen",
292 },
293 [v_bookmark] = {
294 mode = "UseOutlines",
295 },
296 [v_attachment] = {
297 mode = "UseAttachments",
298 },
299 [v_layer] = {
300 mode = "UseOC",
301 },
302 [v_fit] = {
303 fit = true,
304 },
305 [v_doublesided] = {
306 layout = "TwoColumnRight",
307 },
308 [v_fixed] = {
309 fixed = true,
310 },
311 [v_landscape] = {
312 duplex = "DuplexFlipShortEdge",
313 },
314 [v_portrait] = {
315 duplex = "DuplexFlipLongEdge",
316 },
317 [v_page] = {
318 duplex = "Simplex" ,
319 },
320 [v_paper] = {
321 paper = true,
322 },
323 [v_title] ={
324 title = true,
325 },
326 [v_lefttoright] ={
327 direction = "L2R",
328 },
329 [v_righttoleft] ={
330 direction = "R2L",
331 },
332 [v_nomenubar] ={
333 nomenubar = true,
334 },
335}
336
337local pagespecs = {
338
339 [v_max] = plusspecs[v_max],
340 [v_bookmark] = plusspecs[v_bookmark],
341 [v_attachment] = plusspecs[v_attachment],
342 [v_layer] = plusspecs[v_layer],
343 [v_lefttoright] = plusspecs[v_lefttoright],
344 [v_righttoleft] = plusspecs[v_righttoleft],
345 [v_title] = plusspecs[v_title],
346
347 [v_none] = {
348 },
349 [v_fit] = {
350 mode = "UseNone",
351 fit = true,
352 },
353 [v_doublesided] = {
354 mode = "UseNone",
355 layout = "TwoColumnRight",
356 fit = true,
357 },
358 [v_singlesided] = {
359 mode = "UseNone"
360 },
361 [v_default] = {
362 mode = "UseNone",
363 layout = "auto",
364 },
365 [v_auto] = {
366 mode = "UseNone",
367 layout = "auto",
368 },
369 [v_fixed] = {
370 mode = "UseNone",
371 layout = "auto",
372 fixed = true,
373 },
374 [v_landscape] = {
375 mode = "UseNone",
376 layout = "auto",
377 fixed = true,
378 duplex = "DuplexFlipShortEdge",
379 },
380 [v_portrait] = {
381 mode = "UseNone",
382 layout = "auto",
383 fixed = true,
384 duplex = "DuplexFlipLongEdge",
385 },
386 [v_page] = {
387 mode = "UseNone",
388 layout = "auto",
389 fixed = true,
390 duplex = "Simplex",
391 },
392 [v_paper] = {
393 mode = "UseNone",
394 layout = "auto",
395 fixed = true,
396 duplex = "Simplex",
397 paper = true,
398 },
399 [v_nomenubar] = {
400 mode = "UseNone",
401 layout = "auto",
402 nomenubar = true,
403 },
404}
405
406local pagespec, topoffset, leftoffset, height, width, doublesided = "default", 0, 0, 0, 0, false
407local cropoffset, bleedoffset, trimoffset, artoffset = 0, 0, 0, 0
408local marked = false
409local copies = false
410
411local getpagedimensions getpagedimensions = function()
412 getpagedimensions = backends.codeinjections.getpagedimensions
413 return getpagedimensions()
414end
415
416function codeinjections.setupcanvas(specification)
417 local paperheight = specification.paperheight
418 local paperwidth = specification.paperwidth
419 local paperdouble = specification.doublesided
420
421 paperwidth, paperheight = codeinjections.setpagedimensions(paperwidth,paperheight)
422
423 pagespec = specification.mode or pagespec
424 topoffset = specification.topoffset or 0
425 leftoffset = specification.leftoffset or 0
426 height = specification.height or paperheight
427 width = specification.width or paperwidth
428 marked = specification.print
429
430 copies = specification.copies
431 if copies and copies < 2 then
432 copies = false
433 end
434
435 cropoffset = specification.cropoffset or 0
436 trimoffset = cropoffset - (specification.trimoffset or 0)
437 bleedoffset = trimoffset - (specification.bleedoffset or 0)
438 artoffset = bleedoffset - (specification.artoffset or 0)
439
440 if paperdouble ~= nil then
441 doublesided = paperdouble
442 end
443end
444
445local function documentspecification()
446 if not pagespec or pagespec == "" then
447 pagespec = v_default
448 end
449 local settings = settings_to_array(pagespec)
450
451 local first = settings[1]
452 local defaults = pagespecs[first]
453 local spec = defaults or pagespecs[v_default]
454
455 if spec.layout == "auto" then
456 if doublesided then
457 local s = pagespecs[v_doublesided]
458 for k, v in next, s do
459 spec[k] = v
460 end
461 else
462 spec.layout = false
463 end
464 end
465
466 for i=defaults and 2 or 1,#settings do
467 local s = plusspecs[settings[i]]
468 if s then
469 for k, v in next, s do
470 spec[k] = v
471 end
472 end
473 end
474
475 local layout = spec.layout
476 local mode = spec.mode
477 local fit = spec.fit
478 local fixed = spec.fixed
479 local duplex = spec.duplex
480 local paper = spec.paper
481 local title = spec.title
482 local direction = spec.direction
483 local nomenubar = spec.nomenubar
484 if layout then
485 addtocatalog("PageLayout",pdfconstant(layout))
486 end
487 if mode then
488 addtocatalog("PageMode",pdfconstant(mode))
489 end
490 local prints = nil
491 if marked then
492 local pages = structures.pages
493 local marked = pages.allmarked(marked)
494 local nofmarked = marked and #marked or 0
495 if nofmarked > 0 then
496
497
498 for i=1,#marked do marked[i] = marked[i] - 1 end
499 prints = pdfarray(flattened(pages.toranges(marked)))
500 end
501 end
502 if fit or fixed or duplex or copies or paper or prints or title or direction or nomenubar then
503 addtocatalog("ViewerPreferences",pdfdictionary {
504 FitWindow = fit and true or nil,
505 PrintScaling = fixed and pdfconstant("None") or nil,
506 Duplex = duplex and pdfconstant(duplex) or nil,
507 NumCopies = copies and copies or nil,
508 PickTrayByPDFSize = paper and true or nil,
509 PrintPageRange = prints or nil,
510 DisplayDocTitle = title and true or nil,
511 Direction = direction and pdfconstant(direction) or nil,
512 HideMenubar = nomenubar and true or nil,
513 })
514 end
515 addtoinfo ("Trapped", pdfconstant("False"))
516 addtocatalog("Version", pdfconstant(format("1.%s",pdfminorversion())))
517 addtocatalog("Lang", pdfstring(tokens.getters.macro("currentmainlanguage")))
518end
519
520
521
522local factor = number.dimenfactors.bp
523local f_value = formatters["%.6N"]
524
525local function boxvalue(n)
526 return pdfverbose(f_value(factor * n))
527end
528
529local function pagespecification()
530 local paperwidth, paperheight = codeinjections.getpagedimensions()
531 local llx = leftoffset
532 local lly = paperheight + topoffset - height
533 local urx = width - leftoffset
534 local ury = paperheight - topoffset
535
536 local function extrabox(WhatBox,offset,always)
537 if offset ~= 0 or always then
538 addtopageattributes(WhatBox, pdfarray {
539 boxvalue(llx + offset),
540 boxvalue(lly + offset),
541 boxvalue(urx - offset),
542 boxvalue(ury - offset),
543 })
544 end
545 end
546 if omitextraboxes then
547
548 else
549 extrabox("CropBox",cropoffset,true)
550 extrabox("TrimBox",trimoffset,true)
551 extrabox("BleedBox",bleedoffset)
552
553 end
554end
555
556lpdf.registerpagefinalizer(pagespecification,"page specification")
557lpdf.registerdocumentfinalizer(documentspecification,"document specification")
558
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565
566local map = {
567 numbers = "D",
568 Romannumerals = "R",
569 romannumerals = "r",
570 Characters = "A",
571 characters = "a",
572}
573
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603
604local function featurecreep()
605 local pages = structures.pages.tobesaved
606 local list = pdfarray()
607 local getset = structures.sets.get
608 local stopped = false
609 local oldlabel = nil
610 local olconversion = nil
611 for i=1,#pages do
612 local p = pages[i]
613 if not p then
614 return
615 end
616 local label = p.viewerprefix or ""
617 if p.status == v_stop then
618 if not stopped then
619 list[#list+1] = i - 1
620 list[#list+1] = pdfdictionary {
621 P = pdfunicode(label),
622 }
623 stopped = true
624 end
625 oldlabel = nil
626 oldconversion = nil
627 stopped = false
628 else
629 local numberdata = p.numberdata
630 local conversion = nil
631 local number = p.number
632 if numberdata then
633 local conversionset = numberdata.conversionset
634 if conversionset then
635 conversion = getset("structure:conversions",p.block,conversionset,1,"numbers")
636 end
637 end
638 conversion = conversion and map[conversion] or map.numbers
639 if number == 1 or oldlabel ~= label or oldconversion ~= conversion then
640 list[#list+1] = i - 1
641 list[#list+1] = pdfdictionary {
642 S = pdfconstant(conversion),
643 St = number,
644 P = label ~= "" and pdfunicode(label) or nil,
645 }
646 end
647 oldlabel = label
648 oldconversion = conversion
649 stopped = false
650 end
651 end
652 addtocatalog("PageLabels", pdfdictionary { Nums = list })
653end
654
655lpdf.registerdocumentfinalizer(featurecreep,"featurecreep")
656 |
