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Diffstat (limited to 'Master/texmf-dist/tex/context/base/mkxl/typo-mar.lmt')
-rw-r--r-- | Master/texmf-dist/tex/context/base/mkxl/typo-mar.lmt | 995 |
1 files changed, 995 insertions, 0 deletions
diff --git a/Master/texmf-dist/tex/context/base/mkxl/typo-mar.lmt b/Master/texmf-dist/tex/context/base/mkxl/typo-mar.lmt new file mode 100644 index 00000000000..7e69162a900 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/mkxl/typo-mar.lmt @@ -0,0 +1,995 @@ +if not modules then modules = { } end modules ['typo-mar'] = { + version = 1.001, + comment = "companion to typo-mar.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +-- todo: +-- +-- * autoleft/right depending on available space (or distance to margin) +-- * floating margin data, with close-to-call anchoring + +local format, validstring = string.format, string.valid +local insert, remove, sortedkeys, fastcopy = table.insert, table.remove, table.sortedkeys, table.fastcopy +local setmetatable, next, tonumber = setmetatable, next, tonumber +local formatters = string.formatters +local toboolean = toboolean +local settings_to_hash = utilities.parsers.settings_to_hash + +local attributes = attributes +local nodes = nodes +local variables = variables +local context = context + +local trace_margindata = false trackers.register("typesetters.margindata", function(v) trace_margindata = v end) +local trace_marginstack = false trackers.register("typesetters.margindata.stack", function(v) trace_marginstack = v end) +local trace_margingroup = false trackers.register("typesetters.margindata.group", function(v) trace_margingroup = v end) + +local report_margindata = logs.reporter("margindata") + +local tasks = nodes.tasks +local prependaction = tasks.prependaction +local disableaction = tasks.disableaction +local enableaction = tasks.enableaction + +local variables = interfaces.variables + +local conditionals = tex.conditionals +local systemmodes = tex.systemmodes + +local v_top = variables.top +local v_depth = variables.depth +local v_local = variables["local"] +local v_global = variables["global"] +local v_left = variables.left +local v_right = variables.right +local v_inner = variables.inner +local v_outer = variables.outer +local v_margin = variables.margin +local v_edge = variables.edge +local v_default = variables.default +local v_normal = variables.normal +local v_yes = variables.yes +local v_continue = variables.continue +local v_first = variables.first +local v_text = variables.text +local v_paragraph = variables.paragraph +local v_line = variables.line + +local nuts = nodes.nuts +local tonode = nuts.tonode + +local hpack_nodes = nuts.hpack +local traverse_id = nuts.traverse_id +local flush_node_list = nuts.flush_list + +local getnext = nuts.getnext +local getprev = nuts.getprev +local getid = nuts.getid +local getattr = nuts.getattr +local setattr = nuts.setattr +local getsubtype = nuts.getsubtype +local getlist = nuts.getlist +local getwhd = nuts.getwhd +local setlist = nuts.setlist +local setlink = nuts.setlink +local getshift = nuts.getshift +local setshift = nuts.setshift +local getwidth = nuts.getwidth +local setwidth = nuts.setwidth +local getheight = nuts.getheight + +local setattrlist = nuts.setattrlist + +local getbox = nuts.getbox +local takebox = nuts.takebox + +local setprop = nuts.setprop +local getprop = nuts.getprop + +local nodecodes = nodes.nodecodes +local listcodes = nodes.listcodes +local whatsitcodes = nodes.whatsitcodes + +local hlist_code = nodecodes.hlist +local vlist_code = nodecodes.vlist +local whatsit_code = nodecodes.whatsit +local userdefined_code = whatsitcodes.userdefined + +local nodepool = nuts.pool + +local new_hlist = nodepool.hlist +local new_usernode = nodepool.usernode +local latelua = nodepool.latelua + +local texgetdimen = tex.getdimen +local texgetcount = tex.getcount +local texget = tex.get + +local isleftpage = layouts.status.isleftpage +local registertogether = builders.paragraphs.registertogether + +local paragraphs = typesetters.paragraphs +local addtoline = paragraphs.addtoline +local moveinline = paragraphs.moveinline +local calculatedelta = paragraphs.calculatedelta + +local a_linenumber = attributes.private('linenumber') + +local inline_mark = nodepool.userids["margins.inline"] + +local jobpositions = job.positions +local getposition = jobpositions.get +local setposition = jobpositions.set +local getreserved = jobpositions.getreserved + +local margins = { } +typesetters.margins = margins + +local locations = { v_left, v_right, v_inner, v_outer } -- order might change +local categories = { } +local displaystore = { } -- [category][location][scope] +local inlinestore = { } -- [number] +local nofsaved = 0 +local nofstored = 0 +local nofinlined = 0 +local nofdelayed = 0 +local nofinjected = 0 +local h_anchors = 0 +local v_anchors = 0 + +local mt1 = { + __index = function(t,location) + local v = { [v_local] = { }, [v_global] = { } } + t[location] = v + return v + end +} + +local mt2 = { + __index = function(stores,category) + categories[#categories+1] = category + local v = { } + setmetatable(v,mt1) + stores[category] = v + return v + end +} + +setmetatable(displaystore,mt2) + +local defaults = { + __index = { + location = v_left, + align = v_normal, -- not used + method = "", + name = "", + threshold = 0, -- .25ex + margin = v_normal, + scope = v_global, + distance = 0, + hoffset = 0, + voffset = 0, + category = v_default, + line = 0, + vstack = 0, + dy = 0, + baseline = false, + inline = false, + leftskip = 0, + rightskip = 0, + option = { } + } +} + +local enablelocal, enableglobal -- forward reference (delayed initialization) + +local function showstore(store,banner,location) + if next(store) then + for i, si in table.sortedpairs(store) do + local si =store[i] + report_margindata("%s: stored in %a at %s: %a => %s",banner,location,i,validstring(si.name,"no name"),nodes.toutf(getlist(si.box))) + end + else + report_margindata("%s: nothing stored in location %a",banner,location) + end +end + +function margins.save(t) + setmetatable(t,defaults) + local content = takebox(t.number) + local location = t.location + local category = t.category + local inline = t.inline + local scope = t.scope + local name = t.name + local option = t.option + local stack = t.stack + if option then + option = settings_to_hash(option) + t.option = option + end + if not content then + report_margindata("ignoring empty margin data %a",location or "unknown") + return + end + setprop(content,"specialcontent","margindata") + local store + if inline then + store = inlinestore + else + store = displaystore[category][location] + if not store then + report_margindata("invalid location %a",location) + return + end + store = store[scope] + end + if not store then + report_margindata("invalid scope %a",scope) + return + end + if enablelocal and scope == v_local then + enablelocal() + if enableglobal then + enableglobal() -- is the fallback + end + elseif enableglobal and scope == v_global then + enableglobal() + end + nofsaved = nofsaved + 1 + nofstored = nofstored + 1 + if trace_marginstack then + showstore(store,"before",location) + end + if name and name ~= "" then + -- this can be used to overload + if inlinestore then -- todo: inline store has to be done differently (not sparse) + local t = sortedkeys(store) for j=#t,1,-1 do local i = t[j] + local si = store[i] + if si.name == name then + local s = remove(store,i) + flush_node_list(s.box) + end + end + else + for i=#store,1,-1 do + local si = store[i] + if si.name == name then + local s = remove(store,i) + flush_node_list(s.box) + end + end + end + if trace_marginstack then + showstore(store,"between",location) + end + end + if t.number then + local leftmargindistance = texgetdimen("naturalleftmargindistance") + local rightmargindistance = texgetdimen("naturalrightmargindistance") + local strutbox = getbox("strutbox") + local _, strutht, strutdp = getwhd(strutbox) + -- better make a new table and make t entry in t + t.box = content + t.n = nofsaved + -- used later (we will clean up this natural mess later) + -- nice is to make a special status table mechanism + t.strutheight = strutht + t.strutdepth = strutdp + -- beware: can be different from the applied one (we're not in forgetall) + t.leftskip = texget("leftskip",false) + t.rightskip = texget("rightskip",false) + -- + t.leftmargindistance = leftmargindistance -- todo:layoutstatus table + t.rightmargindistance = rightmargindistance + t.leftedgedistance = texgetdimen("naturalleftedgedistance") + + texgetdimen("leftmarginwidth") + + leftmargindistance + t.rightedgedistance = texgetdimen("naturalrightedgedistance") + + texgetdimen("rightmarginwidth") + + rightmargindistance + t.lineheight = texgetdimen("lineheight") + -- + -- t.realpageno = texgetcount("realpageno") + if inline then + local n = new_usernode(inline_mark,nofsaved) + setattrlist(n,true) + context(tonode(n)) -- or use a normal node + store[nofsaved] = t -- no insert + nofinlined = nofinlined + 1 + else + insert(store,t) + end + end + if trace_marginstack then + showstore(store,"after",location) + end + if trace_margindata then + report_margindata("saved %a, location %a, scope %a, inline %a",nofsaved,location,scope,inline) + end +end + +-- Actually it's an advantage to have them all anchored left (tags and such) +-- we could keep them in store and flush in stage two but we might want to +-- do more before that so we need the content to be there unless we can be +-- sure that we flush this first which might not be the case in the future. +-- +-- When the prototype inner/outer code that was part of this proved to be +-- okay it was moved elsewhere. + +local function realign(current,candidate) + local location = candidate.location + local margin = candidate.margin + local hoffset = candidate.hoffset + local distance = candidate.distance + local hsize = candidate.hsize + local width = candidate.width + local align = candidate.align + local inline = candidate.inline + local anchor = candidate.anchor + local hook = candidate.hook + local scope = candidate.scope + local option = candidate.option + local reverse = hook.reverse + local atleft = true + local hmove = 0 + local delta = 0 + local leftpage = isleftpage() + local leftdelta = 0 + local rightdelta = 0 + local leftdistance = distance + local rightdistance = distance + -- + if not anchor or anchor == "" then + anchor = v_text -- this has to become more clever: region:0|column:n|column + end + if margin == v_normal then + -- + elseif margin == v_local then + leftdelta = - candidate.leftskip + rightdelta = candidate.rightskip + elseif margin == v_margin then + leftdistance = candidate.leftmargindistance + rightdistance = candidate.rightmargindistance + elseif margin == v_edge then + leftdistance = candidate.leftedgedistance + rightdistance = candidate.rightedgedistance + end + if leftpage then + leftdistance, rightdistance = rightdistance, leftdistance + end + if location == v_right then + atleft = false + elseif location == v_inner then + if leftpage then + atleft = false + end + elseif location == v_outer then + if not leftpage then + atleft = false + end + else + -- v_left + end + + local islocal = scope == v_local + local area = (not islocal or option[v_text]) and anchor or nil + + if atleft then + delta = hoffset + leftdelta + leftdistance + else + delta = hoffset + rightdelta + rightdistance + end + + local delta, hmove = calculatedelta ( + hook, -- the line + width, -- width of object + delta, -- offset + atleft, + islocal, -- islocal + option[v_paragraph], -- followshape + area -- relative to area + ) + + if hmove ~= 0 then + delta = delta + hmove + if trace_margindata then + report_margindata("realigned %a, location %a, margin %a, move %p",candidate.n,location,margin,hmove) + end + else + if trace_margindata then + report_margindata("realigned %a, location %a, margin %a",candidate.n,location,margin) + end + end + moveinline(hook,candidate.node,delta) +end + +local function realigned(current,candidate) + realign(current,candidate) + nofdelayed = nofdelayed - 1 + setprop(current,"margindata",false) + return true +end + +-- Stacking is done in two ways: the v_yes option stacks per paragraph (or line, +-- depending on what gets by) and mostly concerns margin data dat got set at more or +-- less the same time. The v_continue option uses position tracking and works on +-- larger range. However, crossing pages is not part of it. Anyway, when you have +-- such messed up margin data you'd better think twice. +-- +-- The stacked table keeps track (per location) of the offsets (the v_yes case). This +-- table gets saved when the v_continue case is active. We use a special variant +-- of position tracking, after all we only need the page number and vertical position. + +local validstacknames = { + [v_left ] = v_left , + [v_right] = v_right, + [v_inner] = v_inner, + [v_outer] = v_outer, +} + +local cache = { } +local stacked = { [v_yes] = { }, [v_continue] = { } } +local anchors = { [v_yes] = { }, [v_continue] = { } } + +local function resetstacked(all) + stacked[v_yes] = { } + anchors[v_yes] = { } + if all then + stacked[v_continue] = { } + anchors[v_continue] = { } + end +end + +-- anchors are only set for lines that have a note + +local function sa(specification) -- maybe l/r keys ipv left/right keys + local tag = specification.tag + local p = cache[tag] + if p then + if trace_marginstack then + report_margindata("updating anchor %a",tag) + end + p.p = true + p.y = true + -- maybe settobesaved first + setposition("md:v",tag,p) + cache[tag] = nil -- do this later, per page a cleanup + end +end + +local function setanchor(v_anchor) -- freezes the global here + return latelua { action = sa, tag = v_anchor } +end + +local function aa(specification) -- maybe l/r keys ipv left/right keys + local tag = specification.tag + local n = specification.n + local p = jobpositions.gettobesaved('md:v',tag) + if p then + if trace_marginstack then + report_margindata("updating injected %a",tag) + end + local pages = p.pages + if not pages then + pages = { } + p.pages = pages + end + pages[n] = texgetcount("realpageno") + elseif trace_marginstack then + report_margindata("not updating injected %a",tag) + end +end + +local function addtoanchor(v_anchor,n) -- freezes the global here + return latelua { action = aa, tag = v_anchor, n = n } +end + +local function markovershoot(current) -- todo: alleen als offset > line + v_anchors = v_anchors + 1 + cache[v_anchors] = fastcopy(stacked) + local anchor = setanchor(v_anchors) + -- local list = hpack_nodes(setlink(anchor,getlist(current))) -- not ok, we need to retain width + -- local list = setlink(anchor,getlist(current)) -- why not this ... better play safe + local list = hpack_nodes(setlink(anchor,getlist(current)),getwidth(current),"exactly")-- + if trace_marginstack then + report_margindata("marking anchor %a",v_anchors) + end + setlist(current,list) +end + +local function inject(parent,head,candidate) + local box = candidate.box + if not box then + return head, nil, false -- we can have empty texts + end + local width, height, depth + = getwhd(box) + local shift = getshift(box) + local stack = candidate.stack + local stackname = candidate.stackname + local location = candidate.location + local method = candidate.method + local voffset = candidate.voffset + local line = candidate.line + local baseline = candidate.baseline + local strutheight = candidate.strutheight + local strutdepth = candidate.strutdepth + local inline = candidate.inline + local psubtype = getsubtype(parent) + -- This stackname is experimental and therefore undocumented and basically + -- unsupported. It was introduced when we needed to support overlapping + -- of different anchors. + if not stackname or stackname == "" then + stackname = location + else + stackname = validstacknames[stackname] or location + end + local isstacked = stack == v_continue or stack == v_yes + local offset = isstacked and stacked[stack][stackname] + local firstonstack = offset == false or offset == nil + nofinjected = nofinjected + 1 + nofdelayed = nofdelayed + 1 + -- yet untested + baseline = tonumber(baseline) + if not baseline then + baseline = toboolean(baseline) + end + -- + if baseline == true then + baseline = false + else + baseline = tonumber(baseline) + if not baseline or baseline <= 0 then + -- in case we have a box of width 0 that is not analyzed + baseline = false -- strutheight -- actually a hack + end + end + candidate.width = width + candidate.hsize = getwidth(parent) -- we can also pass textwidth + candidate.psubtype = psubtype + candidate.stackname = stackname + if trace_margindata then + report_margindata("processing, index %s, height %p, depth %p, parent %a, method %a",candidate.n,height,depth,listcodes[psubtype],method) + end + -- Overlap detection is somewhat complex because we have display and inline + -- notes mixed as well as inner and outer positioning. We do need to + -- handle it in the stream because we also keep lines together so we keep + -- track of page numbers of notes. + + if isstacked then + firstonstack = true + local anchor = getposition("md:v") + if anchor and (location == v_inner or location == v_outer) then + local pages = anchor.pages + if pages then + local page = pages[nofinjected] + if page then + if isleftpage(page) then + stackname = location == v_inner and v_right or v_left + else + stackname = location == v_inner and v_left or v_right + end + candidate.stackname = stackname + offset = stack and stack ~= "" and stacked[stack][stackname] + end + end + end + local current = v_anchors + 1 + local previous = anchors[stack][stackname] + if trace_margindata then + report_margindata("anchor %i, offset so far %p",current,offset or 0) + end + local ap = anchor and anchor[previous] + local ac = anchor and anchor[current] + if not previous then + elseif previous == current then + firstonstack = false + elseif ap and ac and ap.p == ac.p then + local distance = (ap.y or 0) - (ac.y or 0) + if trace_margindata then + report_margindata("distance %p",distance) + end + if offset > distance then + -- we already overflow + offset = offset - distance + firstonstack = false + else + offset = 0 + end + else + -- what to do + end + anchors[v_yes] [stackname] = current + anchors[v_continue][stackname] = current + if firstonstack then + offset = 0 + end + offset = offset + candidate.dy -- always + shift = shift + offset + else + if firstonstack then + offset = 0 + end + offset = offset + candidate.dy -- always + shift = shift + offset + end + -- Maybe we also need to patch offset when we apply methods, but how ... + -- This needs a bit of playing as it depends on the stack setting of the + -- following which we don't know yet ... so, consider stacking partially + -- experimental. + if method == v_top then + local delta = height - getheight(parent) + if trace_margindata then + report_margindata("top aligned by %p",delta) + end + if delta < candidate.threshold then -- often we need a negative threshold here + shift = shift + voffset + delta + end + elseif method == v_line then + local _, ph, pd = getwhd(parent) + if pd == 0 then + local delta = height - ph + if trace_margindata then + report_margindata("top aligned by %p (no depth)",delta) + end + if delta < candidate.threshold then -- often we need a negative threshold here + shift = shift + voffset + delta + end + end + elseif method == v_first then + if baseline then + shift = shift + voffset + height - baseline -- option + else + shift = shift + voffset -- normal + end + if trace_margindata then + report_margindata("first aligned") + end + elseif method == v_depth then + local delta = strutdepth + if trace_margindata then + report_margindata("depth aligned by %p",delta) + end + shift = shift + voffset + delta + elseif method == v_height then + local delta = - strutheight + if trace_margindata then + report_margindata("height aligned by %p",delta) + end + shift = shift + voffset + delta + elseif voffset ~= 0 then + if trace_margindata then + report_margindata("voffset %p applied",voffset) + end + shift = shift + voffset + end + -- -- -- + if line ~= 0 then + local delta = line * candidate.lineheight + if trace_margindata then + report_margindata("offset %p applied to line %s",delta,line) + end + shift = shift + delta + offset = offset + delta + end + setshift(box,shift) + setwidth(box,0) -- not needed when wrapped + -- + if isstacked then + setlink(box,addtoanchor(v_anchors,nofinjected)) + box = new_hlist(box) + -- set height / depth ? + end + -- + candidate.hook, candidate.node = addtoline(parent,box) + -- + setprop(box,"margindata",candidate) + if trace_margindata then + report_margindata("injected, location %a, stack %a, shift %p",location,stackname,shift) + end + -- we need to add line etc to offset as well + offset = offset + depth + local room = { + height = height, + depth = offset, + slack = candidate.bottomspace, -- todo: 'depth' => strutdepth + lineheight = candidate.lineheight, -- only for tracing + stacked = inline and isstacked, + } + offset = offset + height + -- we need a restart ... when there is no overlap at all + stacked[v_yes] [stackname] = offset + stacked[v_continue][stackname] = offset + -- todo: if no real depth then zero + if trace_margindata then + report_margindata("status, offset %s",offset) + end + return getlist(parent), room, inline and isstacked or (stack == v_continue) +end + +local function flushinline(parent,head) + local current = head + local done = false + local continue = false + local room, don, con, list + while current and nofinlined > 0 do + local id = getid(current) + if id == whatsit_code then + if getsubtype(current) == userdefined_code and getprop(current,"id") == inline_mark then + local n = getprop(current,"data") + local candidate = inlinestore[n] + if candidate then -- no vpack, as we want to realign + inlinestore[n] = nil + nofinlined = nofinlined - 1 + head, room, con = inject(parent,head,candidate) -- maybe return applied offset + done = true + continue = continue or con + nofstored = nofstored - 1 + if room and room.stacked then + -- for now we also check for inline+yes/continue, maybe someday no such check + -- will happen; we can assume most inlines are one line heigh; also this + -- together feature can become optional + registertogether(parent,room) + end + end + end + elseif id == hlist_code or id == vlist_code then + -- optional (but sometimes needed) + list, don, con = flushinline(current,getlist(current)) + setlist(current,list) + continue = continue or con + done = done or don + end + current = getnext(current) + end + return head, done, continue +end + +local function flushed(scope,parent) -- current is hlist + local head = getlist(parent) + local done = false + local continue = false + local room, con, don + for c=1,#categories do + local category = categories[c] + for l=1,#locations do + local location = locations[l] + local store = displaystore[category][location][scope] + if store then + while true do + local candidate = remove(store,1) -- brr, local stores are sparse + if candidate then -- no vpack, as we want to realign + head, room, con = inject(parent,head,candidate) + done = true + continue = continue or con + nofstored = nofstored - 1 + if room then + registertogether(parent,room) + end + else + break + end + end + else + -- report_margindata("fatal error: invalid category %a",category or "?") + end + end + end + if nofinlined > 0 then + if done then + setlist(parent,head) + end + head, don, con = flushinline(parent,head) + continue = continue or con + done = done or don + end + if done then + local a = getattr(head,a_linenumber) -- hack .. we need a more decent critical attribute inheritance mechanism + if false then + local l = hpack_nodes(head,getwidth(parent),"exactly") + setlist(parent,l) + if a then + setattr(l,a_linenumber,a) + end + else + -- because packing messes up profiling + setlist(parent,head) + if a then + setattr(parent,a_linenumber,a) + end + end + end + return done, continue +end + +-- only when group : vbox|vmode_par +-- only when subtype : line, box (no indent alignment cell) + +local function handler(scope,head,group) + if nofstored > 0 then + if trace_margindata then + report_margindata("flushing stage one, stored %s, scope %s, delayed %s, group %a",nofstored,scope,nofdelayed,group) + end + local current = head + local done = false -- for tracing only + while current do + local id = getid(current) + if (id == vlist_code or id == hlist_code) and getprop(current,"margindata") == nil then + local don, continue = flushed(scope,current) + if don then + done = true + setprop(current,"margindata",false) -- signal to prevent duplicate processing + if continue then + markovershoot(current) + end + if nofstored <= 0 then + break + end + end + end + current = getnext(current) + end + if trace_margindata then + if done then + report_margindata("flushing stage one, done, %s left",nofstored) + else + report_margindata("flushing stage one, nothing done, %s left",nofstored) + end + end + resetstacked() + end + return head +end + +local trialtypesetting = context.trialtypesetting + +-- maybe change this to an action applied to the to be shipped out box (that is +-- the mvl list in there so that we don't need to traverse global + +function margins.localhandler(head,group) -- sometimes group is "" which is weird + + if trialtypesetting() then + return head + end + + local inhibit = conditionals.inhibitmargindata + if inhibit then + if trace_margingroup then + report_margindata("ignored 3, group %a, stored %s, inhibit %a",group,nofstored,inhibit) + end + return head + end + if nofstored > 0 then + return handler(v_local,head,group) + end + if trace_margingroup then + report_margindata("ignored 4, group %a, stored %s, inhibit %a",group,nofstored,inhibit) + end + return head +end + +function margins.globalhandler(head,group) -- check group + + if trialtypesetting() then + return head, false + end + + local inhibit = conditionals.inhibitmargindata + if inhibit or nofstored == 0 then + if trace_margingroup then + report_margindata("ignored 1, group %a, stored %s, inhibit %a",group,nofstored,inhibit) + end + return head + elseif group == "hmode_par" then + return handler(v_global,head,group) + elseif group == "vmode_par" then -- experiment (for alignments) + return handler(v_global,head,group) + -- this needs checking as we then get quite some one liners to process and + -- we cannot look ahead then: + elseif group == "box" then -- experiment (for alignments) + return handler(v_global,head,group) + elseif group == "alignment" then -- experiment (for alignments) + return handler(v_global,head,group) + else + if trace_margingroup then + report_margindata("ignored 2, group %a, stored %s, inhibit %a",group,nofstored,inhibit) + end + return head + end +end + +local function finalhandler(head) + if nofdelayed > 0 then + local current = head + while current and nofdelayed > 0 do -- traverse_list + local id = getid(current) + if id == hlist_code then -- only lines? + local a = getprop(current,"margindata") + if not a then + finalhandler(getlist(current)) + elseif realigned(current,a) then + if nofdelayed == 0 then + return head, true + end + end + elseif id == vlist_code then + finalhandler(getlist(current)) + end + current = getnext(current) + end + end + return head +end + +function margins.finalhandler(head) + if nofdelayed > 0 then + if trace_margindata then + report_margindata("flushing stage two, instore: %s, delayed: %s",nofstored,nofdelayed) + end + head = finalhandler(head) + resetstacked(nofdelayed==0) + else + resetstacked() + end + return head +end + +-- Somehow the vbox builder (in combinations) gets pretty confused and decides to +-- go horizontal. So this needs more testing. + +enablelocal = function() + enableaction("finalizers", "typesetters.margins.localhandler") + enableaction("shipouts", "typesetters.margins.finalhandler") + enablelocal = nil +end + +enableglobal = function() + enableaction("mvlbuilders", "typesetters.margins.globalhandler") + enableaction("shipouts", "typesetters.margins.finalhandler") + enableglobal = nil +end + +statistics.register("margin data", function() + if nofsaved > 0 then + return format("%s entries, %s pending",nofsaved,nofdelayed) + else + return nil + end +end) + +interfaces.implement { + name = "savemargindata", + actions = margins.save, + arguments = { + { + { "location" }, + { "method" }, + { "category" }, + { "name" }, + { "scope" }, + { "number", "integer" }, + { "margin" }, + { "distance", "dimen" }, + { "hoffset", "dimen" }, + { "voffset", "dimen" }, + { "dy", "dimen" }, + { "bottomspace", "dimen" }, + { "baseline"}, -- dimen or string or + { "threshold", "dimen" }, + { "inline", "boolean" }, + { "anchor" }, + -- { "leftskip", "dimen" }, + -- { "rightskip", "dimen" }, + { "align" }, + { "option" }, + { "line", "integer" }, + { "index", "integer" }, + { "stackname" }, + { "stack" }, + } + } +} |