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|
if not modules then modules = { } end modules ['supp-box'] = {
version = 1.001,
optimize = true,
comment = "companion to supp-box.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local report_hyphenation = logs.reporter("languages","hyphenation")
local tonumber, next, type = tonumber, next, type
local lpegmatch = lpeg.match
local tex = tex
local context = context
local nodes = nodes
local implement = interfaces.implement
local nodecodes = nodes.nodecodes
local disc_code = nodecodes.disc
local hlist_code = nodecodes.hlist
local vlist_code = nodecodes.vlist
local glue_code = nodecodes.glue
local penalty_code = nodecodes.penalty
local glyph_code = nodecodes.glyph
local par_code = nodecodes.par
local indent_code = nodes.listcodes.indent
local topskip_code = nodes.gluecodes.topskip
local line_code = nodes.listcodes.line
local hmode_code = tex.modelevels.horizontal
local nuts = nodes.nuts
local tonut = nuts.tonut
local tonode = nuts.tonode
local getnext = nuts.getnext
local getprev = nuts.getprev
local getboth = nuts.getboth
local getdisc = nuts.getdisc
local getid = nuts.getid
local getsubtype = nuts.getsubtype
local getlist = nuts.getlist
local getattribute = nuts.getattribute
local getbox = nuts.getbox
local getdirection = nuts.getdirection
local getwidth = nuts.getwidth
local getheight = nuts.getheight
local getdepth = nuts.getdepth
local getwhd = nuts.getwhd
local takebox = nuts.takebox
local setlink = nuts.setlink
local setboth = nuts.setboth
local setnext = nuts.setnext
local setprev = nuts.setprev
local setbox = nuts.setbox
local setlist = nuts.setlist
local setdisc = nuts.setdisc
local setwidth = nuts.setwidth
local setheight = nuts.setheight
local setdepth = nuts.setdepth
local setshift = nuts.setshift
local setsplit = nuts.setsplit
local setattrlist = nuts.setattrlist
local setwhd = nuts.setwhd
local setglue = nuts.setglue
local flushnode = nuts.flushnode
local flushlist = nuts.flushlist
local copy_node = nuts.copy
local copylist = nuts.copylist
local find_tail = nuts.tail
local getdimensions = nuts.dimensions
local hpack = nuts.hpack
local vpack = nuts.vpack
local traverseid = nuts.traverseid
local traverse = nuts.traverse
local free = nuts.free
local findtail = nuts.tail
local reverse = nuts.reverse
local effectiveglue = nuts.effectiveglue
local nextdisc = nuts.traversers.disc
local nextdir = nuts.traversers.dir
local nexthlist = nuts.traversers.hlist
local listtoutf = nodes.listtoutf
local nodepool = nuts.pool
local new_penalty = nodepool.penalty
local new_hlist = nodepool.hlist
local new_glue = nodepool.glue
local setlistcolor = nodes.tracers.colors.setlist
local texget = tex.get
local texgetbox = tex.getbox
local texsetdimen = tex.setdimen
local texgetnest = tex.getnest
local function hyphenatedlist(head,usecolor)
local current = head and tonut(head)
while current do
local id = getid(current)
local prev, next = getboth(current)
if id == disc_code then
local pre, post, replace = getdisc(current)
if not usecolor then
-- nothing fancy done
elseif pre and post then
setlistcolor(pre,"darkmagenta")
setlistcolor(post,"darkcyan")
elseif pre then
setlistcolor(pre,"darkyellow")
elseif post then
setlistcolor(post,"darkyellow")
end
if replace then
flushlist(replace)
end
setdisc(current)
if pre then
setlink(prev,new_penalty(10000),pre)
setlink(find_tail(pre),current)
end
if post then
setlink(current,new_penalty(10000),post)
setlink(find_tail(post),next)
end
elseif id == vlist_code or id == hlist_code then
hyphenatedlist(getlist(current))
end
current = next
end
end
implement {
name = "hyphenatedlist",
arguments = { "integer", "boolean" },
actions = function(n,color)
local b = texgetbox(n)
if b then
hyphenatedlist(b.list,color)
end
end
}
local function checkedlist(list)
if type(list) == "number" then
return getlist(getbox(tonut(list)))
else
return tonut(list)
end
end
implement {
name = "showhyphenatedinlist",
arguments = "integer",
actions = function(n)
-- we just hyphenate (as we pass a hpack) .. a bit too much casting but ...
local l = languages.hyphenators.handler(checkedlist(n))
report_hyphenation("show: %s",listtoutf(l,false,true))
end
}
local function applytochars(current,doaction,noaction,nested)
while current do
local id = getid(current)
if nested and (id == hlist_code or id == vlist_code) then
context.beginhbox()
applytochars(getlist(current),doaction,noaction,nested)
context.endhbox()
elseif id ~= glyph_code then
noaction(tonode(copy_node(current)))
else
doaction(tonode(copy_node(current)))
end
current = getnext(current)
end
end
local function applytowords(current,doaction,noaction,nested)
local start
while current do
local id = getid(current)
if id == glue_code then
if start then
doaction(tonode(copylist(start,current)))
start = nil
end
noaction(tonode(copy_node(current)))
elseif nested and (id == hlist_code or id == vlist_code) then
context.beginhbox()
applytowords(getlist(current),doaction,noaction,nested)
context.egroup()
elseif not start then
start = current
end
current = getnext(current)
end
if start then
doaction(tonode(copylist(start)))
end
end
local methods = {
char = applytochars,
characters = applytochars,
word = applytowords,
words = applytowords,
}
implement {
name = "applytobox",
arguments = {
{
{ "box", "integer" },
{ "command" },
{ "method" },
{ "nested", "boolean" },
}
},
actions = function(specification)
local list = checkedlist(specification.box)
local action = methods[specification.method or "char"]
if list and action then
action(list,context[specification.command or "ruledhbox"],context,specification.nested)
end
end
}
local split_char = lpeg.Ct(lpeg.C(1)^0)
local split_word = lpeg.tsplitat(lpeg.patterns.space)
local split_line = lpeg.tsplitat(lpeg.patterns.eol)
local function processsplit(specification)
local str = specification.data or ""
local command = specification.command or "ruledhbox"
local method = specification.method or "word"
local spaced = specification.spaced
if command then
command = context[command]
end
if method == "char" or method == "character" then
if spaced then
spaced = context.space
end
local words = lpegmatch(split_char,str)
for i=1,#words do
local word = words[i]
if word == " " then
if spaced then
spaced()
end
elseif command then
command(word)
else
context(word)
end
end
elseif method == "word" then
if spaced then
spaced = context.space
end
local words = lpegmatch(split_word,str)
for i=1,#words do
local word = words[i]
if spaced and i > 1 then
spaced()
end
if command then
command(word)
else
context(word)
end
end
elseif method == "line" then
if spaced then
spaced = context.par
end
local words = lpegmatch(split_line,str)
for i=1,#words do
local word = words[i]
if spaced and i > 1 then
spaced()
end
if command then
command(word)
else
context(word)
end
end
else
context(str)
end
end
implement {
name = "processsplit",
actions = processsplit,
arguments = {
{
{ "data" },
{ "command" },
{ "method" },
{ "spaced", "boolean" },
}
}
}
local a_vboxtohboxseparator = attributes.private("vboxtohboxseparator")
implement {
name = "vboxlisttohbox",
arguments = { "integer", "integer", "dimen" },
actions = function(original,target,inbetween)
local current = getlist(getbox(original))
local head = nil
local tail = nil
while current do
local id = getid(current)
local next = getnext(current)
if id == hlist_code then
local list = getlist(current)
if head then
if inbetween > 0 then
local n = new_glue(0,0,inbetween)
setlink(tail,n)
tail = n
end
setlink(tail,list)
else
head = list
end
tail = find_tail(list)
-- remove last separator
if getid(tail) == hlist_code and getattribute(tail,a_vboxtohboxseparator) == 1 then
local temp = tail
local prev = getprev(tail)
if next then
local list = getlist(tail)
setlink(prev,list)
setlist(tail)
tail = find_tail(list)
else
tail = prev
end
flushnode(temp)
end
-- done
setnext(tail)
setlist(current)
end
current = next
end
local result = new_hlist()
setlist(result,head)
setbox(target,result)
-- setbox(target,new_hlist(head))
end
}
implement {
name = "hboxtovbox",
arguments = "integer",
actions = function(n)
local b = getbox(n)
local factor = texget("baselineskip",false) / texget("hsize")
setdepth(b,0)
setheight(b,getwidth(b) * factor)
end
}
implement {
name = "boxtostring",
arguments = "integer",
public = true,
actions = function(n)
context.verbatim(nodes.toutf(texgetbox(n).list)) -- helper is defined later
end
}
local function getnaturaldimensions(n)
local w = 0
local h = 0
local d = 0
local l = getlist(getbox(n))
if l then
w, h, d = getdimensions(l)
end
texsetdimen("lastnaturalboxwd",w)
texsetdimen("lastnaturalboxht",h)
texsetdimen("lastnaturalboxdp",d)
return w, h, d
end
implement {
name = "getnaturaldimensions",
arguments = "integer",
actions = getnaturaldimensions
}
implement {
name = "naturalwd",
arguments = "integer",
actions = function(n)
getnaturaldimensions(n)
context.lastnaturalboxwd(false)
end
}
implement {
name = "getnaturalwd",
arguments = "integer",
actions = function(n)
local w = 0
local h = 0
local d = 0
local l = getlist(getbox(n))
if l then
w, h, d = getdimensions(l)
end
context("\\dimexpr%i\\scaledpoint\\relax",w)
end
}
local function setboxtonaturalwd(n)
local old = takebox(n)
local new = hpack(getlist(old))
setlist(old,nil)
flushnode(old)
setbox(n,new)
end
implement {
name = "setnaturalwd",
arguments = "integer",
actions = setboxtonaturalwd
}
nodes.setboxtonaturalwd = setboxtonaturalwd
local doifelse = commands.doifelse
do
local dirvalues = nodes.dirvalues
local lefttoright_code = dirvalues.lefttoright
local righttoleft_code = dirvalues.righttoleft
local function firstdirinbox(n)
local b = getbox(n)
if b then
local l = getlist(b)
if l then
for d in nextdir, l do
return getdirection(d)
end
for h in nexthlist, l do
return getdirection(h)
end
end
end
return lefttoright_code
end
nodes.firstdirinbox = firstdirinbox
implement {
name = "doifelserighttoleftinbox",
arguments = "integer",
actions = function(n)
doifelse(firstdirinbox(n) == righttoleft_code)
end
}
end
-- new (handy for mp) .. might move to its own module
do
local tonut = nodes.tonut
local takebox = nuts.takebox
local flushlist = nuts.flushlist
local copylist = nuts.copylist
local getwhd = nuts.getwhd
local setbox = nuts.setbox
local new_hlist = nuts.pool.hlist
local values = tokens.values
local dimension_value = values.dimension
local cardinal_value = values.cardinal
local boxes = { }
nodes.boxes = boxes
local cache = table.setmetatableindex("table")
local report = logs.reporter("boxes","cache")
local trace = false
trackers.register("nodes.boxes",function(v) trace = v end)
function boxes.save(category,name,b)
name = tonumber(name) or name
local b = takebox(b)
if trace then
report("category %a, name %a, %s (%s)",category,name,"save",b and "content" or "empty")
end
if name == "+" then
name = #cache[category] + 1
end
cache[category][name] = b or false
end
function boxes.savenode(category,name,n)
name = tonumber(name) or name
if trace then
report("category %a, name %a, %s (%s)",category,name,"save",n and "content" or "empty")
end
cache[category][name] = tonut(n) or false
end
function boxes.found(category,name)
name = tonumber(name) or name
return cache[category][name] and true or false
end
function boxes.count(category)
return #cache[category]
end
function boxes.direct(category,name,copy)
name = tonumber(name) or name
local c = cache[category]
local b = c[name]
-- if name == "+" then
-- b = remove(c, 1)
-- else
-- b = c[name]
-- end
if not b then
-- do nothing, maybe trace
elseif copy then
b = copylist(b)
else
c[name] = false
end
if trace then
report("category %a, name %a, %s (%s)",category,name,"direct",b and "content" or "empty")
end
if b then
return tonode(b)
end
end
function boxes.restore(category,name,box,copy)
name = tonumber(name) or name
local c = cache[category]
local b = takebox(box)
if b then
flushlist(b)
end
local b = c[name]
if not b then
-- do nothing, maybe trace
elseif copy then
b = copylist(b)
else
c[name] = false
end
if trace then
report("category %a, name %a, %s (%s)",category,name,"restore",b and "content" or "empty")
end
setbox(box,b or nil)
end
local function dimensions(category,name)
name = tonumber(name) or name
local b = cache[category][name]
if b then
return getwhd(b)
else
return 0, 0, 0
end
end
boxes.dimensions = dimensions
function boxes.reset(category,name)
name = tonumber(name) or name
local c = cache[category]
if name and name ~= "" then
local b = c[name]
if b then
flushlist(b)
c[name] = false
end
if trace then
report("category %a, name %a, reset",category,name)
end
else
for k, b in next, c do
if b then
flushlist(b)
end
end
cache[category] = { }
if trace then
report("category %a, reset",category)
end
end
end
function boxes.dispose(category)
boxes.reset(category)
cache[category] = nil -- or false (for tracing)
end
implement {
name = "putboxincache",
public = true,
protected = true,
arguments = { "string", "string", "integer" },
actions = boxes.save,
}
implement {
name = "getboxfromcache",
public = true,
protected = true,
arguments = { "string", "string", "integer" },
actions = boxes.restore,
}
implement {
name = "directboxfromcache",
public = true,
protected = true,
arguments = "2 strings",
actions = { boxes.direct, context },
-- actions = function(category,name) local b = boxes.direct(category,name) if b then context(b) end end,
}
implement {
name = "directcopyboxfromcache",
public = true,
protected = true,
arguments = { "string", "string", true },
actions = { boxes.direct, context },
-- actions = function(category,name) local b = boxes.direct(category,name,true) if b then context(b) end end,
}
implement {
name = "copyboxfromcache",
public = true,
protected = true,
arguments = { "string", "string", "integer", true },
actions = boxes.restore,
}
implement {
name = "doifelseboxincache",
public = true,
protected = true,
arguments = "2 strings",
actions = { boxes.found, doifelse },
}
implement {
name = "resetboxesincache",
public = true,
protected = true,
arguments = "string",
actions = boxes.reset,
}
implement {
name = "disposeboxesincache",
public = true,
protected = true,
arguments = "string",
actions = boxes.dispose,
}
-- we can share this ...
implement {
name = "getboxcountfromcache",
public = true,
protected = true,
usage = "value",
arguments = "string",
actions = function(category)
return cardinal_value, #cache[category]
end,
}
implement {
name = "getboxwdfromcache",
public = true,
protected = true,
usage = "value",
arguments = "2 strings",
actions = function(category,name)
local w, h, d = dimensions(category,name)
return dimension_value, w
end,
}
implement {
name = "getboxhtfromcache",
arguments = "2 strings",
public = true,
protected = true,
usage = "value",
actions = function(category,name)
local w, h, d = dimensions(category,name)
return dimension_value, h
end,
}
implement {
name = "getboxdpfromcache",
arguments = "2 strings",
public = true,
protected = true,
usage = "value",
actions = function(category,name)
local w, h, d = dimensions(category,name)
return dimension_value, d
end,
}
implement {
name = "putnextboxincache",
public = true,
protected = true,
arguments = { "string", "string", "box" },
actions = function(category,name,b)
name = tonumber(name) or name
b = tonut(b)
if trace then
report("category %a, name %a, %s (%s)",category,name,"save",b and "content" or "empty")
end
cache[category][name] = b or false
end
}
end
implement {
name = "lastlinewidth",
actions = function()
local head = tex.lists.page_head
-- list dimensions returns 3 value but we take the first
context(head and getdimensions(getlist(find_tail(tonut(tex.lists.page_head)))) or 0)
end
}
implement {
name = "shiftbox",
arguments = { "integer", "dimension" },
actions = function(n,d)
setshift(getbox(n),d)
end,
}
implement { name = "vpackbox", arguments = "integer", actions = function(n) setbox(n,(vpack(takebox(n)))) end }
implement { name = "hpackbox", arguments = "integer", actions = function(n) setbox(n,(hpack(takebox(n)))) end }
implement { name = "vpackedbox", arguments = "integer", actions = function(n) context(vpack(takebox(n))) end }
implement { name = "hpackedbox", arguments = "integer", actions = function(n) context(hpack(takebox(n))) end }
implement {
name = "scangivendimensions",
public = true,
protected = true,
arguments = {
{
{ "width", "dimension" },
{ "height", "dimension" },
{ "depth", "dimension" },
},
},
actions = function(t)
texsetdimen("givenwidth", t.width or 0)
texsetdimen("givenheight",t.height or 0)
texsetdimen("givendepth", t.depth or 0)
end,
}
local function stripglue(list)
local done = false
local first = list
while first do
local id = getid(first)
if id == glue_code or id == penalty_code then
first = getnext(first)
else
break
end
end
if first and first ~= list then
-- we have discardables
setsplit(getprev(first),first)
flushlist(list)
list = first
done = true
end
if list then
local tail = findtail(list)
local last = tail
while last do
local id = getid(last)
if id == glue_code or id == penalty_code then
last = getprev(last)
else
break
end
end
if last ~= tail then
-- we have discardables
flushlist(getnext(last))
setnext(last)
done = true
end
end
return list, done
end
local function limitate(t) -- don't pack the result !
local text = t.text
if text then
text = tonut(text)
else
return
end
local sentinel = t.sentinel
if sentinel then
sentinel = tonut(sentinel)
local s = getlist(sentinel)
setlist(sentinel)
free(sentinel)
sentinel = s
else
return tonode(text)
end
local width = getwidth(text)
local list = getlist(text)
local done = false
if t.strip then
list, done = stripglue(list)
if not list then
setlist(text)
setwidth(text,0)
return text
elseif done then
width = getdimensions(list)
setlist(text,list)
end
end
local left = t.left or 0
local right = t.right or 0
local total = left + right
if total < width then
local last = nil
local first = nil
local maxleft = left
local maxright = right
local swidth = getwidth(sentinel)
if maxright > 0 then
maxleft = maxleft - swidth/2
maxright = maxright - swidth/2
else
maxleft = maxleft - swidth
end
for n in traverseid(glue_code,list) do
local width = getdimensions(list,n)
if width > maxleft then
if not last then
last = n
end
break
else
last = n
end
end
if last and maxright > 0 then
for n in traverseid(glue_code,last) do
local width = getdimensions(n)
if width < maxright then
first = n
break
else
first = n
end
end
end
if last then
local rest = getnext(last)
if rest then
local tail = findtail(sentinel)
if first and getid(first) == glue_code and getid(tail) == glue_code then
setwidth(first,0)
end
if last and getid(last) == glue_code and getid(sentinel) == glue_code then
setwidth(last,0)
end
if first and first ~= last then
local prev = getprev(first)
if prev then
setnext(prev)
end
setlink(tail,first)
end
setlink(last,sentinel)
setprev(rest)
flushlist(rest)
end
end
end
setlist(text)
free(text)
if t.freeze then
local l = hpack(list,total,"exactly")
for n in traverseid(glue_code,list) do
setglue(n,(effectiveglue(n,l)))
end
setlist(l)
flushnode(l)
end
return tonode(list)
end
implement {
name = "limitated",
public = true,
protected = true,
arguments = {
{
{ "left", "dimension" },
{ "right", "dimension" },
{ "text", "hbox" },
{ "sentinel", "hbox" },
{ "strip", "boolean" },
{ "freeze", "boolean" },
}
},
actions = function(t)
context.dontleavehmode()
context(limitate(t))
end,
}
-- only in lmtx:
implement {
name = "widthuptohere",
public = true,
usage = "value",
actions = function()
local n = texgetnest()
local w = 0
if n.mode == hmode_code then
local h = hpack(getnext(tonut(n.head)))
w = getwidth(h)
setlist(h)
free(h)
end
return tokens.values.dimension, w
end,
}
implement {
name = "doifelseindented",
public = true,
protected = true,
actions = function()
local n = texgetnest()
local b = false
-- can be a helper !
if n.mode == hmode_code then
n = tonut(n.head)
while n do
n = getnext(n)
if n then
local id = getid(n)
if id == hlist_code then
if getsubtype(n) == indent_code then
b = getwidth(n) > 0
break
end
elseif id ~= par_code then
break
end
end
end
end
commands.doifelse(b)
end,
}
implement {
name = "noflinesinbox",
public = true,
protected = false,
arguments = "integer",
actions = function(n)
local c = 0
local b = getbox(n)
if b then
b = getlist(b)
if b then
for n, id in traverse(b) do
if id == hlist_code or id == vlist_code then
c = c + 1
end
end
end
end
context(c)
end,
}
do
local takebox = tex.takebox
implement {
name = "thebox",
public = true,
arguments = "integer",
actions = function(n)
context(takebox(n))
end
}
end
-- only in lmtx
implement {
name = "reversevboxcontent",
protected = true,
public = true,
arguments = "integer",
actions = function(n)
local b = getbox(n)
local l = b and getid(b) == vlist_code and getlist(b)
if l and getnext(l) then
setlist(b,reverse(l)) -- no re-vpack here!
end
end
}
-- only in lmtx
do
local scaninteger = tokens.scanners.integer
local scanbox = tokens.scanners.box
local scandimen = tokens.scanners.dimen
local setsubtype = nuts.setsubtype
local removenode = nuts.remove
local getnormalizedline = nuts.getnormalizedline -- we can optimize this
local getdimensions = nuts.dimensions
local getrangedimensions = nuts.rangedimensions
local setprop = nuts.setprop
local getprop = nuts.getprop
local listcodes = nodes.listcodes
local line_code = listcodes.line
local equation_code = listcodes.equation
local unknown_code = listcodes.unknown
local values = tokens.values
local dimension_value = values.dimension
local cardinal_value = values.cardinal
local direct_value = values.direct
-- todo: make helper that formats
local reporterror = logs.texerrormessage
-- The first variant did a linear lookup but for large boxes and lots of
-- analysis that is not nice. Okay, in practice performance is quite ok
-- (milliseconds for thousands of access) but still ... the next is nicer
-- and it's part of the experimental fun stuff anyway.
local function countlines(box)
local prop = getprop(box,"boxlines")
if not prop then
local line = 0
local list = getlist(box)
prop = { }
if list then
for n, subtype in nexthlist, list do
if subtype == line_code then -- or subtype == equation_code then
line = line + 1
prop[line] = n
end
end
end
setprop(box,"boxlines",prop)
end
return prop
end
local function boxlinecount(what)
local n = scaninteger()
local box = getbox(n)
if what == "value" then
return cardinal_value, box and #countlines(box) or 0
end
end
local function findline()
local n = scaninteger()
local line = scaninteger()
local box = getbox(n)
if box then
local prop = getprop(box,"boxlines")
if not prop then
prop = countlines(box)
end
local found = prop[line]
if found then
local props = getprop(found,"lineproperties")
if not props then
props = getnormalizedline(found)
props.width, props.height, props.depth = getwhd(found)
setprop(found,"lineproperties",props)
end
return props, line, found, box
end
end
reporterror("no line %i in box %i",line,n)
end
local function findrange()
local n = scaninteger()
local first = scaninteger()
local last = scaninteger()
local box = getbox(n)
if box then
local prop = getprop(box,"boxlines")
if not prop then
prop = countlines(box)
end
if first > 0 and last <= #prop then
for i = first, last do
local found = prop[i]
local props = getprop(found,"lineproperties")
if not props then
props = getnormalizedline(found)
props.width, props.height, props.depth = getwhd(found)
setprop(found,"lineproperties",props)
end
end
return prop, first, last, box
end
end
reporterror("no lines %i - %i in box %i",first,last,n)
end
local function getline(props,line,found,box,value)
local p, n = getboth(found)
local temp = new_hlist()
setsubtype(temp,getsubtype(found))
setwhd(temp,getwhd(found))
if found == getlist(box) then
setlink(temp,n)
setlist(box,temp)
else
setlink(p,temp,n)
end
getprop(box,"boxlines")[line] = temp
setboth(found)
setsubtype(found, unknown_code)
if value then
return direct_value, found
else
context(tonode(found))
end
end
local function copyline(props,line,found,box,value)
found = copy_node(found)
setsubtype(found, unknown_code)
if value then
return direct_value, found
else
context(tonode(found))
end
end
local function setline(props,line,found,box)
local p, n = getboth(found)
local temp = scanbox()
if temp then
temp = tonut(temp)
if found == getlist(box) then
setlink(temp,n)
setlist(box,temp)
else
setlink(p,temp,n)
end
flushnode(found)
getprop(box,"boxlines")[line] = temp
end
end
local function naturaldimensions(p,l,found)
if not p.naturalwidth then
p.naturalwidth, p.naturalheight, p.naturaldepth = getdimensions(getlist(found))
end
return p
end
local function rangedimensions(p,f,l,box)
local w, h, d = getrangedimensions(box,p[f],getnext(p[l]),true)
return { width = w, height = h, depth = d }
end
local getters_one = {
["wd"] = function(p,l,found) return dimension_value, p.width end,
["ht"] = function(p,l,found) return dimension_value, p.height end,
["dp"] = function(p,l,found) return dimension_value, p.depth end,
["ls"] = function(p,l,found) return dimension_value, p.leftskip end,
["rs"] = function(p,l,found) return dimension_value, p.rightskip end,
["lh"] = function(p,l,found) return dimension_value, p.lefthangskip end,
["rh"] = function(p,l,found) return dimension_value, p.righthangskip end,
["lp"] = function(p,l,found) return dimension_value, p.parfillleftskip end,
["rp"] = function(p,l,found) return dimension_value, p.parfillrightskip end,
["in"] = function(p,l,found) return dimension_value, p.indent end,
["nw"] = function(p,l,found) return dimension_value, naturaldimensions(p,l,found).naturalwidth end,
["nh"] = function(p,l,found) return dimension_value, naturaldimensions(p,l,found).naturalheigth end,
["nd"] = function(p,l,found) return dimension_value, naturaldimensions(p,l,found).naturaldepth end,
["get"] = function(p,l,found,box) return getline(p,l,found,box,true) end,
}
local getters_two = {
["wd"] = function(p,f,l,box) return dimension_value, rangedimensions(p,f,l,box).width end,
["ht"] = function(p,f,l,box) return dimension_value, rangedimensions(p,f,l,box).height end,
["dp"] = function(p,f,l,box) return dimension_value, rangedimensions(p,f,l,box).depth end,
}
local setters_one = {
["wd"] = function(p,l,found) return setwidth (found,scandimen(false,false,true)) end,
["ht"] = function(p,l,found) return setheight(found,scandimen(false,false,true)) end,
["dp"] = function(p,l,found) return setdepth (found,scandimen(false,false,true)) end,
["set"] = setline,
["get"] = getline,
["copy"] = copyline,
}
local function boxline(name,what)
local props, line, found, box = findline()
if not found then
--
elseif what == "value" then
local getter = getters_one[name]
if getter then
return getter(props,line,found,box)
end
else
local setter = setters_one[name]
if setter then
return setter(props,line,found,box)
end
end
end
--
local function boxrange(name,what)
local prop, first, last, box = findrange()
if not prop then
--
elseif what == "value" then
local getter = getters_two[name]
if getter then
return getter(prop,first,last,box)
end
else
local setter = setters_two[name]
if setter then
return setter(prop,first,last,box)
end
end
end
local function define_one(name,action)
implement {
name = name,
public = true,
usage = "value",
actions = function(what) return boxline(action,what) end,
}
end
local function define_two(name,action)
implement {
name = name,
public = true,
usage = "value",
actions = function(what) return boxrange(action,what) end,
}
end
implement {
name = "boxlines",
public = true,
usage = "value",
actions = boxlinecount,
}
define_one("boxline", "get")
define_one("setboxline", "set")
define_one("copyboxline", "copy")
define_one("boxlineht", "ht")
define_one("boxlinedp", "dp")
define_one("boxlinewd", "wd")
define_one("boxlinels", "ls")
define_one("boxliners", "rs")
define_one("boxlinelh", "lh")
define_one("boxlinerh", "rh")
define_one("boxlinelp", "lp")
define_one("boxlinerp", "rp")
define_one("boxlinein", "in")
define_one("boxlinenw", "nw")
define_one("boxlinenh", "nh")
define_one("boxlinend", "nd")
define_two("boxrangewd", "wd")
define_two("boxrangeht", "ht")
define_two("boxrangedp", "dp")
end
do
local getbox = tex.getbox
local setfield = nodes.setfield
local getfield = nodes.getfield
local flush = nodes.flushnode
local copynode = nodes.copy
local function get(n,field,copy)
local b = getbox(n)
if b then
local p = getfield(b,field)
if copy then
p = copynode(p)
else
setfield(b,field)
end
context(p) -- todo: proper return
end
end
local function set(n,l,field)
local b = getbox(n)
if b then
setfield(b,field,l)
else
flush(l)
end
end
implement {
name = "prelistbox",
public = true,
usage = "value",
arguments = { "integer", '"pre"' },
actions = get,
}
implement {
name = "postlistbox",
public = true,
usage = "value",
arguments = { "integer", '"post"' },
actions = get,
}
implement {
name = "prelistcopy",
public = true,
usage = "value",
arguments = { "integer", '"pre"', true },
actions = get,
}
implement {
name = "postlistcopy",
public = true,
usage = "value",
arguments = { "integer", '"post"', true },
actions = get,
}
implement {
name = "setprelistbox",
public = true,
usage = "value",
arguments = { "integer", "box", '"pre"' },
actions = set,
}
implement {
name = "setpostlistbox",
public = true,
usage = "value",
arguments = { "integer", "box", '"post"' },
actions = set,
}
end
do
function setsplitlisthtdp(n,ht,dp)
local box = getbox(n)
if box then
local head = getlist(box)
if head then
local tail = findtail(head)
local id = getid(head)
if id == glue_code and getsubtype(head) == topskip_code then
head = getnext(head)
id = head and getid(head)
ht = ht - getwidth(head)
end
if id == hlist_code and getsubtype(head) == line_code and getheight(head) < ht then
-- print("set height",ht)
setheight(head,ht)
end
local id = getid(tail)
if id == glue_code then
tail = getprev(tail)
id = tail and getid(tail)
dp = dp - getwidth(tail)
end
if id == hlist_code and getsubtype(tail) == line_code and getdepth(tail) < dp then
setdepth(dept,dp)
-- print("set depth",dp)
end
end
end
end
implement {
name = "setsplitlisthtdp",
public = true,
protected = true,
arguments = { "integer", "dimen", "dimen" },
actions = setsplitlisthtdp,
}
end
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