diff options
Diffstat (limited to 'tex/context/base/mkiv/lpdf-fld.lua')
| -rw-r--r-- | tex/context/base/mkiv/lpdf-fld.lua | 214 |
1 files changed, 78 insertions, 136 deletions
diff --git a/tex/context/base/mkiv/lpdf-fld.lua b/tex/context/base/mkiv/lpdf-fld.lua index bbafb299b..73de5eaf6 100644 --- a/tex/context/base/mkiv/lpdf-fld.lua +++ b/tex/context/base/mkiv/lpdf-fld.lua @@ -6,56 +6,52 @@ if not modules then modules = { } end modules ['lpdf-fld'] = { license = "see context related readme files" } --- The problem with widgets is that so far each version of acrobat --- has some rendering problem. I tried to keep up with this but --- it makes no sense to do so as one cannot rely on the viewer --- not changing. Especially Btn fields are tricky as their appearences --- need to be synchronized in the case of children but e.g. acrobat --- 10 does not retain the state and forces a check symbol. If you --- make a file in acrobat then it has MK entries that seem to overload --- the already present appearance streams (they're probably only meant for --- printing) as it looks like the viewer has some fallback on (auto --- generated) MK behaviour built in. So ... hard to test. Unfortunately --- not even the default appearance is generated. This will probably be --- solved at some point. +-- The problem with widgets is that so far each version of acrobat has some +-- rendering problem. I tried to keep up with this but it makes no sense to do so as +-- one cannot rely on the viewer not changing. Especially Btn fields are tricky as +-- their appearences need to be synchronized in the case of children but e.g. +-- acrobat 10 does not retain the state and forces a check symbol. If you make a +-- file in acrobat then it has MK entries that seem to overload the already present +-- appearance streams (they're probably only meant for printing) as it looks like +-- the viewer has some fallback on (auto generated) MK behaviour built in. So ... +-- hard to test. Unfortunately not even the default appearance is generated. This +-- will probably be solved at some point. -- --- Also, for some reason the viewer does not always show custom appearances --- when fields are being rolled over or clicked upon, and circles or checks --- pop up when you don't expect them. I fear that this kind of instability --- eventually will kill pdf forms. After all, the manual says: "individual --- annotation handlers may ignore this entry and provide their own appearances" --- and one might wonder what 'individual' means here, but effectively this --- renders the whole concept of appearances useless. +-- Also, for some reason the viewer does not always show custom appearances when +-- fields are being rolled over or clicked upon, and circles or checks pop up when +-- you don't expect them. I fear that this kind of instability eventually will kill +-- pdf forms. After all, the manual says: "individual annotation handlers may ignore +-- this entry and provide their own appearances" and one might wonder what +-- 'individual' means here, but effectively this renders the whole concept of +-- appearances useless. -- --- Okay, here is one observation. A pdf file contains objects and one might --- consider each one to be a static entity when read in. However, acrobat --- starts rendering and seems to manipulate (appearance streams) of objects --- in place (this is visible when the file is saved again). And, combined --- with some other caching and hashing, this might give side effects for --- shared objects. So, it seems that for some cases one can best be not too --- clever and not share but duplicate information. Of course this defeats the --- whole purpose of these objects. Of course I can be wrong. +-- Okay, here is one observation. A pdf file contains objects and one might consider +-- each one to be a static entity when read in. However, acrobat starts rendering +-- and seems to manipulate (appearance streams) of objects in place (this is visible +-- when the file is saved again). And, combined with some other caching and hashing, +-- this might give side effects for shared objects. So, it seems that for some cases +-- one can best be not too clever and not share but duplicate information. Of course +-- this defeats the whole purpose of these objects. Of course I can be wrong. -- -- A rarther weird side effect of the viewer is that the highlighting of fields --- obscures values, unless you uses one of the BS variants, and this makes --- custum appearances rather useless as there is no way to control this apart --- from changing the viewer preferences. It could of course be a bug but it would --- be nice if the highlighting was at least transparent. I have no clue why the --- built in shapes work ok (some xform based appearances are generated) while --- equally valid other xforms fail. It looks like acrobat appearances come on --- top (being refered to in the MK) while custom ones are behind the highlight --- rectangle. One can disable the "Show border hover color for fields" option --- in the preferences. If you load java-imp-rhh this side effect gets disabled --- and you get what you expect (it took me a while to figure out this hack). +-- obscures values, unless you uses one of the BS variants, and this makes custum +-- appearances rather useless as there is no way to control this apart from changing +-- the viewer preferences. It could of course be a bug but it would be nice if the +-- highlighting was at least transparent. I have no clue why the built in shapes +-- work ok (some xform based appearances are generated) while equally valid other +-- xforms fail. It looks like acrobat appearances come on top (being refered to in +-- the MK) while custom ones are behind the highlight rectangle. One can disable the +-- "Show border hover color for fields" option in the preferences. If you load +-- java-imp-rhh this side effect gets disabled and you get what you expect (it took +-- me a while to figure out this hack). -- --- When highlighting is enabled, those default symbols flash up, so it looks --- like we have some inteference between this setting and custom appearances. +-- When highlighting is enabled, those default symbols flash up, so it looks like we +-- have some inteference between this setting and custom appearances. -- --- Anyhow, the NeedAppearances is really needed in order to get a rendering --- for printing especially when highlighting (those colorfull foregrounds) is --- on. +-- Anyhow, the NeedAppearances is really needed in order to get a rendering for +-- printing especially when highlighting (those colorfull foregrounds) is on. -local tostring, next = tostring, next +local tostring, tonumber, next = tostring, tonumber, next local gmatch, lower, format, formatters = string.gmatch, string.lower, string.format, string.formatters local lpegmatch = lpeg.match local bpfactor, todimen = number.dimenfactors.bp, string.todimen @@ -92,6 +88,7 @@ local pdfshareobjectreference = lpdf.shareobjectreference local pdfshareobject = lpdf.shareobject local pdfreserveobject = lpdf.reserveobject local pdfaction = lpdf.action +local pdfmajorversion = lpdf.majorversion local pdfcolor = lpdf.color local pdfcolorvalues = lpdf.colorvalues @@ -124,39 +121,39 @@ function codeinjections.setformsmethod(name) end local flag = { -- /Ff - ReadOnly = 2^ 0, -- 1 - Required = 2^ 1, -- 2 - NoExport = 2^ 2, -- 3 - MultiLine = 2^12, -- 13 - Password = 2^13, -- 14 - NoToggleToOff = 2^14, -- 15 - Radio = 2^15, -- 16 - PushButton = 2^16, -- 17 - PopUp = 2^17, -- 18 - Edit = 2^18, -- 19 - Sort = 2^19, -- 20 - FileSelect = 2^20, -- 21 - DoNotSpellCheck = 2^22, -- 23 - DoNotScroll = 2^23, -- 24 - Comb = 2^24, -- 25 - RichText = 2^25, -- 26 - RadiosInUnison = 2^25, -- 26 - CommitOnSelChange = 2^26, -- 27 + ReadOnly = 0x00000001, -- 2^ 0 + Required = 0x00000002, -- 2^ 1 + NoExport = 0x00000004, -- 2^ 2 + MultiLine = 0x00001000, -- 2^12 + Password = 0x00002000, -- 2^13 + NoToggleToOff = 0x00004000, -- 2^14 + Radio = 0x00008000, -- 2^15 + PushButton = 0x00010000, -- 2^16 + PopUp = 0x00020000, -- 2^17 + Edit = 0x00040000, -- 2^18 + Sort = 0x00080000, -- 2^19 + FileSelect = 0x00100000, -- 2^20 + DoNotSpellCheck = 0x00400000, -- 2^22 + DoNotScroll = 0x00800000, -- 2^23 + Comb = 0x01000000, -- 2^24 + RichText = 0x02000000, -- 2^25 + RadiosInUnison = 0x02000000, -- 2^25 + CommitOnSelChange = 0x04000000, -- 2^26 } local plus = { -- /F - Invisible = 2^0, -- 1 - Hidden = 2^1, -- 2 - Printable = 2^2, -- 3 - Print = 2^2, -- 3 - NoZoom = 2^3, -- 4 - NoRotate = 2^4, -- 5 - NoView = 2^5, -- 6 - ReadOnly = 2^6, -- 7 - Locked = 2^7, -- 8 - ToggleNoView = 2^8, -- 9 - LockedContents = 2^9, -- 10, - AutoView = 2^8, -- 6 + 9 ? + Invisible = 0x00000001, -- 2^0 + Hidden = 0x00000002, -- 2^1 + Printable = 0x00000004, -- 2^2 + Print = 0x00000004, -- 2^2 + NoZoom = 0x00000008, -- 2^3 + NoRotate = 0x00000010, -- 2^4 + NoView = 0x00000020, -- 2^5 + ReadOnly = 0x00000040, -- 2^6 + Locked = 0x00000080, -- 2^7 + ToggleNoView = 0x00000100, -- 2^8 + LockedContents = 0x00000200, -- 2^9 + AutoView = 0x00000100, -- 2^8 } -- todo: check what is interfaced @@ -174,6 +171,9 @@ plus.hidden = plus.Hidden plus.printable = plus.Printable plus.auto = plus.AutoView +lpdf.flags.widgets = flag +lpdf.flags.annotations = plus + -- some day .. lpeg with function or table local function fieldflag(specification) -- /Ff @@ -360,6 +360,8 @@ local function fieldsurrounding(specification) return tostring(stream) end +codeinjections.fieldsurrounding = fieldsurrounding + local function registerfonts() if next(usedfonts) then checkpdfdocencoding() -- already done @@ -905,7 +907,7 @@ local function finishfields() end if #collected > 0 then local acroform = pdfdictionary { - NeedAppearances = true, + NeedAppearances = pdfmajorversion() == 1 or nil, Fields = pdfreference(pdfflushobject(collected)), CO = fieldsetlist(calculationset), } @@ -1294,78 +1296,18 @@ function methods.push(name,specification) end local function makeradioparent(field,specification) --- specification = enhance(specification,"Radio,RadiosInUnison") specification = enhance(specification,"Radio,RadiosInUnison,Print,NoToggleToOff") --- specification = enhance(specification,"Radio,Print,NoToggleToOff") local d = pdfdictionary { T = field.name, FT = pdf_btn, --- F = fieldplus(specification), + -- F = fieldplus(specification), Ff = fieldflag(specification), --- H = pdf_n, + -- H = pdf_n, V = fielddefault(field), } save_parent(field,specification,d,true) end --- local function makeradiochild(name,specification) --- local field, parent = clones[name], nil --- if field then --- field = radios[field.parent] --- parent = fields[field.parent] --- if not parent.pobj then --- if trace_fields then --- report_fields("forcing parent radio %a",parent.name) --- end --- makeradioparent(parent,parent) --- end --- else --- field = radios[name] --- if not field then --- report_fields("there is some problem with field %a",name) --- return nil --- end --- parent = fields[field.parent] --- if not parent.pobj then --- if trace_fields then --- report_fields("using parent radio %a",name) --- end --- makeradioparent(parent,parent) --- end --- end --- if trace_fields then --- report_fields("using child radio %a with values %a and default %a",name,field.values,field.default) --- end --- local fontsymbol = specification.fontsymbol --- fontsymbol="star" --- local d = pdfdictionary { --- Subtype = pdf_widget, --- Parent = pdfreference(parent.pobj), --- F = fieldplus(specification), --- OC = fieldlayer(specification), --- AA = fieldactions(specification), --- H = pdf_n, --- } --- if fontsymbol and fontsymbol ~= "" then --- local appearance, default, value = fieldstates_radio(field,true,false,false,name) -- false is also ok --- specification.fontsymbol = todingbat(fontsymbol) --- specification.fontstyle = "symbol" --- specification.fontalternative = "dingbats" --- d.DA = fieldsurrounding(specification) --- d.MK = fieldrendering(specification) --- d.AS = pdfconstant(value) -- default -- mandate when AP but confuses viewers --- d.AP = appearance --- return save_kid(parent,specification,d,value) --- -- return save_kid(parent,specification,d,name) --- else --- -- local appearance, default, value = fieldstates_radio(field,true) -- false is also ok --- local appearance, default, value = fieldstates_radio(field,true,false,false,name) -- false is also ok --- d.AS = default -- mandate when AP but confuses viewers --- d.AP = appearance --- return save_kid(parent,specification,d,value) --- end --- end - local function makeradiochild(name,specification) local field, parent = clones[name], nil if field then |