diff options
Diffstat (limited to 'tex/context/base/mkxl/lpdf-tag.lmt')
| -rw-r--r-- | tex/context/base/mkxl/lpdf-tag.lmt | 73 |
1 files changed, 57 insertions, 16 deletions
diff --git a/tex/context/base/mkxl/lpdf-tag.lmt b/tex/context/base/mkxl/lpdf-tag.lmt index 7aa9edb9b..f6a881208 100644 --- a/tex/context/base/mkxl/lpdf-tag.lmt +++ b/tex/context/base/mkxl/lpdf-tag.lmt @@ -134,6 +134,12 @@ end -- mostly the same as the annotations tree +local usenamespace = false experiments.register("structures.tags.namespaces", function(v) usenamespace = v end) + +local namespaceurls = { + mathml = "http://www.w3.org/1998/Math/MathML", +} + local function finishstructure() if root and #structure_kids > 0 then local nums = pdfarray() @@ -152,11 +158,35 @@ local function finishstructure() } local idtree = pdfmakenametree(names) -- - local rolemap = pdfdictionary() + local rolemaps = usenamespace and { } + local rolemap = pdfdictionary() -- main one for k, v in next, usedmapping do k = usedlabels[k] or k local p = properties[k] - rolemap[k] = pdfconstant(p and p.pdf or "Span") -- or "Div" + if not p then + print("UNDEFINED", k) + end + local n = p and p.namespace + if rolemaps and n then + local r = rolemaps[n] + if not r then + r = pdfdictionary() + rolemaps[n] = r + end + r[k] = pdfconstant(k) -- maybe other tag + else + rolemap[k] = pdfconstant(p and p.pdf or "Span") -- or "Div" + end + end + local namespaces = rolemaps and next(rolemaps) and pdfarray { } or nil + if namespaces then + for k, v in table.sortedhash(rolemaps) do + namespaces[#namespaces+1] = pdfdictionary { + Type = pdfconstant("Namespace"), + NS = pdfunicode(namespaceurls[k] or k), + RoleMapNS = v, + } + end end local structuretree = pdfdictionary { Type = pdfconstant("StructTreeRoot"), @@ -164,6 +194,7 @@ local function finishstructure() ParentTree = pdfreference(pdfflushobject(parent_ref,parenttree)), IDTree = idtree, RoleMap = rolemap, -- sorted ? + Namespaces = namespaces, } pdfflushobject(structure_ref,structuretree) addtocatalog("StructTreeRoot",pdfreference(structure_ref)) @@ -406,15 +437,25 @@ end local EMCliteral = nil local visualize = nil +local enabled = true + +updaters.register("tagging.state.disable",function() enabled = false end) +updaters.register("tagging.state.enable", function() enabled = true end) + function nodeinjections.addtags(head) + if not enabled then + return + end + if not EMCliteral then EMCliteral = register(setstate("EMC")) end - local last = nil - local ranges = { } - local range = nil + local last = nil + local ranges = { } + local range = nil + local nofranges = 0 if not root then structure_kids = pdfarray() @@ -430,12 +471,10 @@ function nodeinjections.addtags(head) -- maybe also disc if getchar(n) ~= 0 then local at = getattr(n,a_tagged) or false -- false: pagebody or so, so artifact - -- if not at then - -- range = nil - -- elseif ... if last ~= at then range = { at, "glyph", n, n, list } -- attr id start stop list - ranges[#ranges+1] = range + nofranges = nofranges + 1 + ranges[nofranges] = range last = at elseif range then range[4] = n -- stop @@ -445,11 +484,8 @@ function nodeinjections.addtags(head) local at = getattr(n,a_image) if at then local at = getattr(n,a_tagged) or false -- false: pagebody or so, so artifact - -- if not at then - -- range = nil - -- else - ranges[#ranges+1] = { at, "image", n, n, list } -- attr id start stop list - -- end + nofranges = nofranges + 1 + ranges[nofranges] = { at, "image", n, n, list } -- attr id start stop list last = nil else local list = getlist(n) @@ -469,7 +505,7 @@ function nodeinjections.addtags(head) -- inspect(ranges) if trace_tags then - for i=1,#ranges do + for i=1,nofranges do local range = ranges[i] local attr = range[1] local id = range[2] @@ -511,7 +547,12 @@ function nodeinjections.addtags(head) end end - for i=1,#ranges do +-- local function inject(start,stop,list,literal,left,right) +-- setlink(getprev(start) or list or true,literal,left or true,start) +-- setlink(stop,right or true,copy_node(EMCliteral),getnext(stop)) +-- end + + for i=1,nofranges do local range = ranges[i] local attr = range[1] |