diff options
Diffstat (limited to 'tex/context/base/mkiv/spac-ver.lua')
| -rw-r--r-- | tex/context/base/mkiv/spac-ver.lua | 421 |
1 files changed, 233 insertions, 188 deletions
diff --git a/tex/context/base/mkiv/spac-ver.lua b/tex/context/base/mkiv/spac-ver.lua index 969a195e1..b55f1ca7c 100644 --- a/tex/context/base/mkiv/spac-ver.lua +++ b/tex/context/base/mkiv/spac-ver.lua @@ -116,8 +116,8 @@ local a_snapmethod = attributes.private('snapmethod') local a_snapvbox = attributes.private('snapvbox') local nuts = nodes.nuts -local tonode = nuts.tonode local tonut = nuts.tonut +local tonode = nuts.tonode local getnext = nuts.getnext local setlink = nuts.setlink @@ -147,15 +147,16 @@ local getdepth = nuts.getdepth local find_node_tail = nuts.tail local flush_node = nuts.flush_node -local traverse_nodes = nuts.traverse -local traverse_nodes_id = nuts.traverse_id local insert_node_after = nuts.insert_after local insert_node_before = nuts.insert_before local remove_node = nuts.remove local count_nodes = nuts.countall local hpack_node = nuts.hpack local vpack_node = nuts.vpack ------ writable_spec = nuts.writable_spec + +local nextnode = nuts.traversers.node +local nexthlist = nuts.traversers.hlist + local nodereference = nuts.reference local theprop = nuts.theprop @@ -170,8 +171,9 @@ local new_kern = nodepool.kern local new_rule = nodepool.rule local nodecodes = nodes.nodecodes -local skipcodes = nodes.skipcodes -local penaltycodes = nodes.penaltycodes +local gluecodes = nodes.gluecodes +----- penaltycodes = nodes.penaltycodes +----- listcodes = nodes.listcodes local penalty_code = nodecodes.penalty local kern_code = nodecodes.kern @@ -179,21 +181,22 @@ local glue_code = nodecodes.glue local insert_code = nodecodes.ins local hlist_code = nodecodes.hlist local vlist_code = nodecodes.vlist +local rule_code = nodecodes.rule local localpar_code = nodecodes.localpar -local linebreak_code = penaltycodes.linebreakpenalty +local userskip_code = gluecodes.userskip +local lineskip_code = gluecodes.lineskip +local baselineskip_code = gluecodes.baselineskip +local parskip_code = gluecodes.parskip +local topskip_code = gluecodes.topskip +local splittopskip_code = gluecodes.splittopskip -local userskip_code = skipcodes.userskip -local lineskip_code = skipcodes.lineskip -local baselineskip_code = skipcodes.baselineskip -local parskip_code = skipcodes.parskip -local topskip_code = skipcodes.topskip -local splittopskip_code = skipcodes.splittopskip +local linelist_code = nodes.listcodes.line -local abovedisplayskip_code = skipcodes.abovedisplayskip -local belowdisplayskip_code = skipcodes.belowdisplayskip -local abovedisplayshortskip_code = skipcodes.abovedisplayshortskip -local belowdisplayshortskip_code = skipcodes.belowdisplayshortskip +local abovedisplayskip_code = gluecodes.abovedisplayskip +local belowdisplayskip_code = gluecodes.belowdisplayskip +local abovedisplayshortskip_code = gluecodes.abovedisplayshortskip +local belowdisplayshortskip_code = gluecodes.belowdisplayshortskip local properties = nodes.properties.data @@ -208,90 +211,93 @@ vspacingdata.snapmethods = snapmethods storage.register("builders/vspacing/data/snapmethods", snapmethods, "builders.vspacing.data.snapmethods") -local default = { - [v_maxheight] = true, - [v_maxdepth] = true, - [v_strut] = true, - [v_hfraction] = 1, - [v_dfraction] = 1, - [v_bfraction] = 0.25, -} +do -local fractions = { - [v_minheight] = v_hfraction, [v_maxheight] = v_hfraction, - [v_mindepth] = v_dfraction, [v_maxdepth] = v_dfraction, - [v_box] = v_bfraction, - [v_top] = v_tlines, [v_bottom] = v_blines, -} + local default = { + [v_maxheight] = true, + [v_maxdepth] = true, + [v_strut] = true, + [v_hfraction] = 1, + [v_dfraction] = 1, + [v_bfraction] = 0.25, + } -local values = { - offset = "offset" -} + local fractions = { + [v_minheight] = v_hfraction, [v_maxheight] = v_hfraction, + [v_mindepth] = v_dfraction, [v_maxdepth] = v_dfraction, + [v_box] = v_bfraction, + [v_top] = v_tlines, [v_bottom] = v_blines, + } -local colonsplitter = lpeg.splitat(":") + local values = { + offset = "offset" + } -local function listtohash(str) - local t = { } - for s in gmatch(str,"[^, ]+") do - local key, detail = lpegmatch(colonsplitter,s) - local v = variables[key] - if v then - t[v] = true - if detail then - local k = fractions[key] - if k then - detail = tonumber("0" .. detail) - if detail then - t[k] = detail - end - else - k = values[key] + local colonsplitter = lpeg.splitat(":") + + local function listtohash(str) + local t = { } + for s in gmatch(str,"[^, ]+") do + local key, detail = lpegmatch(colonsplitter,s) + local v = variables[key] + if v then + t[v] = true + if detail then + local k = fractions[key] if k then - detail = todimen(detail) + detail = tonumber("0" .. detail) if detail then t[k] = detail end + else + k = values[key] + if k then + detail = todimen(detail) + if detail then + t[k] = detail + end + end end end + else + detail = tonumber("0" .. key) + if detail then + t[v_hfraction] = detail + t[v_dfraction] = detail + end end + end + if next(t) then + t[v_hfraction] = t[v_hfraction] or 1 + t[v_dfraction] = t[v_dfraction] or 1 + return t else - detail = tonumber("0" .. key) - if detail then - t[v_hfraction] = detail - t[v_dfraction] = detail - end + return default end end - if next(t) then - t[v_hfraction] = t[v_hfraction] or 1 - t[v_dfraction] = t[v_dfraction] or 1 - return t - else - return default + + function vspacing.definesnapmethod(name,method) + local n = #snapmethods + 1 + local t = listtohash(method) + snapmethods[n] = t + t.name = name -- not interfaced + t.specification = method -- not interfaced + context(n) end -end -function vspacing.definesnapmethod(name,method) - local n = #snapmethods + 1 - local t = listtohash(method) - snapmethods[n] = t - t.name = name -- not interfaced - t.specification = method -- not interfaced - context(n) end local function validvbox(parentid,list) if parentid == hlist_code then local id = getid(list) - if id == localpar_code then -- check for initial par subtype + if id == localpar_code and getsubtype(list) == 0 then list = getnext(list) if not next then return nil end end local done = nil - for n in traverse_nodes(list) do - local id = getid(n) + for n, id in nextnode, list do if id == vlist_code or id == hlist_code then if done then return nil @@ -320,14 +326,13 @@ local function already_done(parentid,list,a_snapmethod) -- todo: done when only -- problem: any snapped vbox ends up in a line if list and parentid == hlist_code then local id = getid(list) - if id == localpar_code then -- check for initial par subtype + if id == localpar_code and getsubtype(list) == 0 then list = getnext(list) if not list then return false end end - for n in traverse_nodes(list) do - local id = getid(n) + for n, id in nextnode, list do if id == hlist_code or id == vlist_code then -- local a = getattr(n,a_snapmethod) -- if not a then @@ -536,7 +541,7 @@ local function snap_hlist(where,current,method,height,depth) -- method[v_strut] if thebox and id == vlist_code then local list = getlist(thebox) local lw, lh, ld - for n in traverse_nodes_id(hlist_code,list) do + for n in nexthlist, list do lw, lh, ld = getwhd(n) break end @@ -572,7 +577,7 @@ local function snap_hlist(where,current,method,height,depth) -- method[v_strut] if thebox and id == vlist_code then local list = getlist(thebox) local lw, lh, ld - for n in traverse_nodes_id(hlist_code,list) do + for n in nexthlist, list do lw, lh, ld = getwhd(n) end if lh then @@ -872,14 +877,15 @@ end local trace_list, tracing_info, before, after = { }, false, "", "" local function nodes_to_string(head) - local current, t = head, { } + local current = head + local t = { } while current do local id = getid(current) local ty = nodecodes[id] if id == penalty_code then t[#t+1] = formatters["%s:%s"](ty,getpenalty(current)) elseif id == glue_code then - t[#t+1] = formatters["%s:%s:%p"](ty,skipcodes[getsubtype(current)],getwidth(current)) + t[#t+1] = formatters["%s:%s:%p"](ty,gluecodes[getsubtype(current)],getwidth(current)) elseif id == kern_code then t[#t+1] = formatters["%s:%p"](ty,getkern(current)) else @@ -1261,17 +1267,26 @@ do if trace then reset_tracing(head) end - local current, oldhead = head, head - local glue_order, glue_data, force_glue = 0, nil, false - local penalty_order, penalty_data, natural_penalty, special_penalty = 0, nil, nil, nil - local parskip, ignore_parskip, ignore_following, ignore_whitespace, keep_together = nil, false, false, false, false - local lastsnap = nil + local current = head + local oldhead = head + local glue_order = 0 + local glue_data + local force_glue = false + local penalty_order = 0 + local penalty_data + local natural_penalty + local special_penalty + local parskip + local ignore_parskip = false + local ignore_following = false + local ignore_whitespace = false + local keep_together = false + local lastsnap + local pagehead + local pagetail -- -- todo: keep_together: between headers -- - local pagehead = nil - local pagetail = nil - local function getpagelist() if not pagehead then pagehead = texlists.page_head @@ -1396,7 +1411,7 @@ do end head = insert_node_before(head,current,glue_data) else - -- report_vspacing("needs checking (%s): %p",skipcodes[getsubtype(glue_data)],w) + -- report_vspacing("needs checking (%s): %p",gluecodes[getsubtype(glue_data)],w) flush_node(glue_data) end end @@ -1814,7 +1829,7 @@ do if snap and trace_vsnapping then local w = getwidth(current) if w ~= 0 then - report_snapper("glue %p of type %a kept",w,skipcodes[subtype]) + report_snapper("glue %p of type %a kept",w,gluecodes[subtype]) end end if trace then @@ -1881,7 +1896,7 @@ do trace_info("head has been changed from %a to %a",nodecodes[getid(oldhead)],nodecodes[getid(head)]) end end - return head, true + return head end -- alignment after_output end box new_graf vmode_par hmode_par insert penalty before_display after_display @@ -1909,43 +1924,47 @@ do -- ugly code: we get partial lists (check if this stack is still okay) ... and we run -- into temp nodes (sigh) + local forceflush = false + function vspacing.pagehandler(newhead,where) -- local newhead = texlists.contrib_head if newhead then - newhead = tonut(newhead) local newtail = find_node_tail(newhead) -- best pass that tail, known anyway local flush = false stackhack = true -- todo: only when grid snapping once enabled -- todo: fast check if head = tail - for n in traverse_nodes(newhead) do -- we could just look for glue nodes - local id = getid(n) + for n, id, subtype in nextnode, newhead do -- we could just look for glue nodes if id ~= glue_code then flush = true - else - local subtype = getsubtype(n) - if subtype == userskip_code then - if getattr(n,a_skipcategory) then - stackhack = true - else - flush = true - end - elseif subtype == parskip_code then - -- if where == new_graf then ... end - if texgetcount("c_spac_vspacing_ignore_parskip") > 0 then --- texsetcount("c_spac_vspacing_ignore_parskip",0) - setglue(n) - -- maybe removenode - end + elseif subtype == userskip_code then + if getattr(n,a_skipcategory) then + stackhack = true + else + flush = true + end + elseif subtype == parskip_code then + -- if where == new_graf then ... end + if texgetcount("c_spac_vspacing_ignore_parskip") > 0 then + -- texsetcount("c_spac_vspacing_ignore_parskip",0) + setglue(n) + -- maybe removenode end end end texsetcount("c_spac_vspacing_ignore_parskip",0) + + if forceflush then + forceflush = false + flush = true + end + if flush then if stackhead then if trace_collect_vspacing then report("%s > appending %s nodes to stack (final): %s",where,newhead) end setlink(stacktail,newhead) - newhead = stackhead - stackhead, stacktail = nil, nil + newhead = stackhead + stackhead = nil + stacktail = nil end if stackhack then stackhack = false @@ -1956,7 +1975,7 @@ do if trace_collect_vspacing then report("%s > flushing %s nodes: %s",where,newhead) end -- texlists.contrib_head = newhead end - return tonode(newhead) + return newhead else if stackhead then if trace_collect_vspacing then report("%s > appending %s nodes to stack (intermediate): %s",where,newhead) end @@ -1966,13 +1985,43 @@ do stackhead = newhead end stacktail = newtail - -- texlists.contrib_head = nil - -- newhead = nil end end return nil end + -- function vspacing.flushpagestack() + -- if stackhead then + -- local head = texlists.contrib_head + -- if head then + -- local tail = find_node_tail(head) + -- setlink(tail,stackhead) + -- else + -- texlists.contrib_head = tonode(stackhead) + -- end + -- stackhead, stacktail = nil, nil + -- end + -- + -- end + + function vspacing.pageoverflow() + local h = 0 + if stackhead then + for n, id in nextnode, stackhead do + if id == glue_code then + h = h + getwidth(n) + elseif id == kern_code then + h = h + getkern(n) + end + end + end + return h + end + + function vspacing.forcepageflush() + forceflush = true + end + local ignore = table.tohash { "split_keep", "split_off", @@ -1980,11 +2029,10 @@ do } function vspacing.vboxhandler(head,where) - if head and not ignore[where] then - local h = tonut(head) - if getnext(h) then -- what if a one liner and snapping? - h = collapser(h,"vbox",where,trace_vbox_vspacing,true,a_snapvbox) -- todo: local snapper - return tonode(h) + if head and not ignore[where] and getnext(head) then + if getnext(head) then -- what if a one liner and snapping? + head = collapser(head,"vbox",where,trace_vbox_vspacing,true,a_snapvbox) -- todo: local snapper + return head end end return head @@ -2015,7 +2063,6 @@ do local outer = texnest[0] local enabled = true - local count = true local trace = false local report = logs.reporter("vspacing") @@ -2024,96 +2071,84 @@ do end) directives.register("vspacing.synchronizepage",function(v) - if v == true or v == "count" then - enabled = true - count = true - elseif v == "first" then - enabled = true - count = false - else - enabled = false - count = false - end + enabled = v end) - -- hm, check the old one + local ignoredepth = -65536000 - -- function vspacing.synchronizepage() - -- if enabled then - -- local head = texlists.hold_head - -- local skip = 0 - -- while head and head.id == insert_code do - -- head = head.next - -- skip = skip + 1 - -- end - -- if head then - -- outer.prevdepth = 0 - -- end - -- if trace then - -- report("prevdepth %s at page %i, skipped %i, value %p", - -- head and "reset" or "kept",texgetcount("realpageno"),skip,outer.prevdepth) - -- end - -- end - -- end + -- A previous version analyzed the number of lines moved to the next page in + -- synchronizepage because prevgraf is unreliable in that case. However, we cannot + -- tweak that parameter because it is also used in postlinebreak and hangafter, so + -- there is a danger for interference. Therefore we now do it dynamically. - local ignoredepth = -65536000 + -- We can also support other lists but there prevgraf probably is ok. - function vspacing.synchronizepage() + function vspacing.getnofpreviouslines(head) if enabled then - local newdepth = outer.prevdepth - local olddepth = newdepth - local oldlines = outer.prevgraf - local newlines = 0 - local boxfound = false - local head = texlists.contrib_head + if not thead then + head = texlists.page_head + end + local noflines = 0 if head then local tail = find_node_tail(tonut(head)) while tail do local id = getid(tail) if id == hlist_code then - if not boxfound then - newdepth = getdepth(tail) - boxfound = true - end - newlines = newlines + 1 - if not count then + if getsubtype(tail) == linelist_code then + noflines = noflines + 1 + else break end elseif id == vlist_code then - if not boxfound then - newdepth = getdepth(tail) - boxfound = true - end break elseif id == glue_code then local subtype = getsubtype(tail) - if not (subtype == baselineskip_code or subtype == lineskip_code) then - break - elseif boxfound and not count then - break + if subtype == baselineskip_code or subtype == lineskip_code then + -- we're ok + elseif subtype == parskip_code then + if getwidth(tail) > 0 then + break + else + -- we assume we're ok + end end elseif id == penalty_code then - if boxfound and not count then - break - end - else - -- ins, mark, kern, rule, boundary, whatsit + -- we're probably ok + elseif id == rule_code or id == kern_code then break + else + -- ins, mark, boundary, whatsit end tail = getprev(tail) end end - if boxfound then - -- what if newdepth ... - else - texset("prevdepth",ignoredepth) - outer.prevdepth = ignoredepth - end - texset("prevgraf", newlines) - outer.prevgraf = newlines + return noflines + end + end + + interfaces.implement { + name = "getnofpreviouslines", + public = true, + actions = vspacing.getnofpreviouslines, + } + + function vspacing.synchronizepage() + if enabled then if trace then - report("page %i, prevdepth %p (last depth %p), prevgraf %i (from %i), %sboxes", - texgetcount("realpageno"),olddepth,newdepth,oldlines,newlines,boxfound and "" or "no ") + local newdepth = outer.prevdepth + local olddepth = newdepth + if not texlists.page_head then + newdepth = ignoredepth + texset("prevdepth",ignoredepth) + outer.prevdepth = ignoredepth + end + report("page %i, prevdepth %p => %p",texgetcount("realpageno"),olddepth,newdepth) + -- report("list %s",nodes.idsandsubtypes(head)) + else + if not texlists.page_head then + texset("prevdepth",ignoredepth) + outer.prevdepth = ignoredepth + end end end end @@ -2226,7 +2261,7 @@ do -- end -- } - interfaces.implement { + implement { name = "removelastline", actions = function() local head = texlists.page_head @@ -2242,7 +2277,7 @@ do end } - interfaces.implement { + implement { name = "showpagelist", -- will improve actions = function() local head = texlists.page_head @@ -2256,4 +2291,14 @@ do end } + implement { + name = "pageoverflow", + actions = { vspacing.pageoverflow, context } + } + + implement { + name = "forcepageflush", + actions = vspacing.forcepageflush + } + end |