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|
if not modules then modules = { } end modules ['tabl-xtb'] = {
version = 1.001,
comment = "companion to tabl-xtb.mkvi",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
--[[
This table mechanism is a combination between TeX and Lua. We do process
cells at the TeX end and inspect them at the Lua end. After some analysis
we have a second pass using the calculated widths, and if needed cells
will go through a third pass to get the heights right. This last pass is
avoided when possible which is why some code below looks a bit more
complex than needed. The reason for such optimizations is that each cells
is actually a framed instance and because tables like this can be hundreds
of pages we want to keep processing time reasonable.
To a large extend the behaviour is comparable with the way bTABLE/eTABLE
works and there is a module that maps that one onto this one. Eventually
this mechamism will be improved so that it can replace its older cousin.
]]--
-- todo: use linked list instead of r/c array
-- todo: we can use the sum of previously forced widths for column spans
local tonumber, next = tonumber, next
local commands = commands
local context = context
local tex = tex
local implement = interfaces.implement
local texgetcount = tex.getcount
local texsetcount = tex.setcount
local texgetdimen = tex.getdimen
local texsetdimen = tex.setdimen
local texget = tex.get
local format = string.format
local concat = table.concat
local points = number.points
local todimen = string.todimen
local context_beginvbox = context.beginvbox
local context_endvbox = context.endvbox
local context_blank = context.blank
local context_nointerlineskip = context.nointerlineskip
local context_dummyxcell = context.dummyxcell
local variables = interfaces.variables
local setmetatableindex = table.setmetatableindex
local settings_to_hash = utilities.parsers.settings_to_hash
local nuts = nodes.nuts -- here nuts gain hardly nothing
local tonut = nuts.tonut
local tonode = nuts.tonode
local getnext = nuts.getnext
local getprev = nuts.getprev
local getlist = nuts.getlist
local getfield = nuts.getfield
local getbox = nuts.getbox
local setfield = nuts.setfield
local copy_node_list = nuts.copy_list
local hpack_node_list = nuts.hpack
local flush_node_list = nuts.flush_list
local takebox = nuts.takebox
local nodepool = nuts.pool
local new_glue = nodepool.glue
local new_kern = nodepool.kern
local new_penalty = nodepool.penalty
local new_hlist = nodepool.hlist
local v_stretch = variables.stretch
local v_normal = variables.normal
local v_width = variables.width
local v_height = variables.height
local v_repeat = variables["repeat"]
local v_max = variables.max
local v_fixed = variables.fixed
local v_auto = variables.auto
local v_before = variables.before
local v_after = variables.after
local v_both = variables.both
local v_samepage = variables.samepage
local v_tight = variables.tight
local xtables = { }
typesetters.xtables = xtables
local trace_xtable = false
local report_xtable = logs.reporter("xtable")
trackers.register("xtable.construct", function(v) trace_xtable = v end)
local null_mode = 0
local head_mode = 1
local foot_mode = 2
local more_mode = 3
local body_mode = 4
local namedmodes = { [0] =
"null",
"head",
"foot",
"next",
"body",
}
local stack, data = { }, nil
function xtables.create(settings)
table.insert(stack,data)
local rows = { }
local widths = { }
local heights = { }
local depths = { }
local spans = { }
local distances = { }
local autowidths = { }
local modes = { }
local fixedrows = { }
local fixedcolumns = { }
-- local fixedcspans = { }
local frozencolumns = { }
local options = { }
local rowproperties = { }
data = {
rows = rows,
widths = widths,
heights = heights,
depths = depths,
spans = spans,
distances = distances,
modes = modes,
autowidths = autowidths,
fixedrows = fixedrows,
fixedcolumns = fixedcolumns,
-- fixedcspans = fixedcspans,
frozencolumns = frozencolumns,
options = options,
nofrows = 0,
nofcolumns = 0,
currentrow = 0,
currentcolumn = 0,
settings = settings or { },
rowproperties = rowproperties,
}
local function add_zero(t,k)
t[k] = 0
return 0
end
local function add_table(t,k)
local v = { }
t[k] = v
return v
end
local function add_cell(row,c)
local cell = {
nx = 0,
ny = 0,
list = false,
wd = 0,
ht = 0,
dp = 0,
}
row[c] = cell
if c > data.nofcolumns then
data.nofcolumns = c
end
return cell
end
local function add_row(rows,r)
local row = { }
setmetatableindex(row,add_cell)
rows[r] = row
if r > data.nofrows then
data.nofrows = r
end
return row
end
setmetatableindex(rows,add_row)
setmetatableindex(widths,add_zero)
setmetatableindex(heights,add_zero)
setmetatableindex(depths,add_zero)
setmetatableindex(distances,add_zero)
setmetatableindex(modes,add_zero)
setmetatableindex(fixedrows,add_zero)
setmetatableindex(fixedcolumns,add_zero)
setmetatableindex(options,add_table)
-- setmetatableindex(fixedcspans,add_table)
--
local globaloptions = settings_to_hash(settings.option)
--
settings.columndistance = tonumber(settings.columndistance) or 0
settings.rowdistance = tonumber(settings.rowdistance) or 0
settings.leftmargindistance = tonumber(settings.leftmargindistance) or 0
settings.rightmargindistance = tonumber(settings.rightmargindistance) or 0
settings.options = globaloptions
settings.textwidth = tonumber(settings.textwidth) or texget("hsize")
settings.lineheight = tonumber(settings.lineheight) or texgetdimen("lineheight")
settings.maxwidth = tonumber(settings.maxwidth) or settings.textwidth/8
-- if #stack > 0 then
-- settings.textwidth = texget("hsize")
-- end
data.criterium_v = 2 * data.settings.lineheight
data.criterium_h = .75 * data.settings.textwidth
--
data.tight = globaloptions[v_tight] and true or false
end
function xtables.initialize_reflow_width(option,width)
local r = data.currentrow
local c = data.currentcolumn + 1
local drc = data.rows[r][c]
drc.nx = texgetcount("c_tabl_x_nx")
drc.ny = texgetcount("c_tabl_x_ny")
local distances = data.distances
local distance = texgetdimen("d_tabl_x_distance")
if distance > distances[c] then
distances[c] = distance
end
if option and option ~= "" then
local options = settings_to_hash(option)
data.options[r][c] = options
if options[v_fixed] then
data.frozencolumns[c] = true
end
end
data.currentcolumn = c
end
-- todo: we can better set the cell values in one go
function xtables.set_reflow_width()
local r = data.currentrow
local c = data.currentcolumn
local rows = data.rows
local row = rows[r]
while row[c].span do -- can also be previous row ones
c = c + 1
end
local tb = getbox("b_tabl_x")
local drc = row[c]
--
drc.list = true -- we don't need to keep the content around as we're in trial mode (no: copy_node_list(tb))
--
local width = getfield(tb,"width")
local height = getfield(tb,"height")
local depth = getfield(tb,"depth")
--
local widths = data.widths
local heights = data.heights
local depths = data.depths
local cspan = drc.nx
if cspan < 2 then
if width > widths[c] then
widths[c] = width
end
else
local options = data.options[r][c]
if data.tight then
-- no check
elseif not options then
if width > widths[c] then
widths[c] = width
end
elseif not options[v_tight] then
if width > widths[c] then
widths[c] = width
end
end
end
-- if cspan > 1 then
-- local f = data.fixedcspans[c]
-- local w = f[cspan] or 0
-- if width > w then
-- f[cspan] = width -- maybe some day a solution for autospanmax and so
-- end
-- end
if drc.ny < 2 then
if height > heights[r] then
heights[r] = height
end
if depth > depths[r] then
depths[r] = depth
end
end
--
drc.wd = width
drc.ht = height
drc.dp = depth
--
local dimensionstate = texgetcount("frameddimensionstate")
local fixedcolumns = data.fixedcolumns
local fixedrows = data.fixedrows
if dimensionstate == 1 then
if cspan > 1 then
-- ignore width
elseif width > fixedcolumns[c] then -- how about a span here?
fixedcolumns[c] = width
end
elseif dimensionstate == 2 then
fixedrows[r] = height
elseif dimensionstate == 3 then
fixedrows[r] = height -- width
fixedcolumns[c] = width -- height
elseif width <= data.criterium_h and height >= data.criterium_v then
-- somewhat tricky branch
if width > fixedcolumns[c] then -- how about a span here?
-- maybe an image, so let's fix
fixedcolumns[c] = width
end
end
--
-- -- this fails so not good enough predictor
--
-- -- \startxtable
-- -- \startxrow
-- -- \startxcell knuth \stopxcell
-- -- \startxcell \input knuth \stopxcell
-- -- \stopxrow
--
-- else
-- local o = data.options[r][c]
-- if o and o[v_auto] then -- new per 5/5/2014 - removed per 15/07/2014
-- data.autowidths[c] = true
-- else
-- -- no dimensions are set in the cell
-- if width <= data.criterium_h and height >= data.criterium_v then
-- -- somewhat tricky branch
-- if width > fixedcolumns[c] then -- how about a span here?
-- -- maybe an image, so let's fix
-- fixedcolumns[c] = width
-- end
-- else
-- -- safeguard as it could be text that can be recalculated
-- -- and the previous branch could have happened in a previous
-- -- row and then forces a wrong one-liner in a multiliner
-- if width > fixedcolumns[c] then
-- data.autowidths[c] = true -- new per 5/5/2014 - removed per 15/07/2014
-- end
-- end
-- end
-- end
--
--
drc.dimensionstate = dimensionstate
--
local nx, ny = drc.nx, drc.ny
if nx > 1 or ny > 1 then
local spans = data.spans
local self = true
for y=1,ny do
for x=1,nx do
if self then
self = false
else
local ry = r + y - 1
local cx = c + x - 1
if y > 1 then
spans[ry] = true
end
rows[ry][cx].span = true
end
end
end
c = c + nx - 1
end
if c > data.nofcolumns then
data.nofcolumns = c
end
data.currentcolumn = c
end
function xtables.initialize_reflow_height()
local r = data.currentrow
local c = data.currentcolumn + 1
local rows = data.rows
local row = rows[r]
while row[c].span do -- can also be previous row ones
c = c + 1
end
data.currentcolumn = c
local widths = data.widths
local w = widths[c]
local drc = row[c]
for x=1,drc.nx-1 do
w = w + widths[c+x]
end
texsetdimen("d_tabl_x_width",w)
local dimensionstate = drc.dimensionstate or 0
if dimensionstate == 1 or dimensionstate == 3 then
-- width was fixed so height is known
texsetcount("c_tabl_x_skip_mode",1)
elseif dimensionstate == 2 then
-- height is enforced
texsetcount("c_tabl_x_skip_mode",1)
elseif data.autowidths[c] then
-- width has changed so we need to recalculate the height
texsetcount("c_tabl_x_skip_mode",0)
elseif data.fixedcolumns[c] then
texsetcount("c_tabl_x_skip_mode",0) -- new
else
texsetcount("c_tabl_x_skip_mode",1)
end
end
function xtables.set_reflow_height()
local r = data.currentrow
local c = data.currentcolumn
local rows = data.rows
local row = rows[r]
-- while row[c].span do -- we could adapt drc.nx instead
-- c = c + 1
-- end
local tb = getbox("b_tabl_x")
local drc = row[c]
--
local width = getfield(tb,"width")
local height = getfield(tb,"height")
local depth = getfield(tb,"depth")
--
if drc.ny < 2 then
if data.fixedrows[r] == 0 then -- and drc.dimensionstate < 2
local heights = data.heights
local depths = data.depths
if height > heights[r] then
heights[r] = height
end
if depth > depths[r] then
depths[r] = depth
end
end
end
--
drc.wd = width
drc.ht = height
drc.dp = depth
--
-- c = c + drc.nx - 1
-- data.currentcolumn = c
end
function xtables.initialize_construct()
local r = data.currentrow
local c = data.currentcolumn + 1
local rows = data.rows
local row = rows[r]
while row[c].span do -- can also be previous row ones
c = c + 1
end
data.currentcolumn = c
local widths = data.widths
local heights = data.heights
local depths = data.depths
--
local drc = row[c]
local wd = drc.wd
local ht = drc.ht
local dp = drc.dp
--
local width = widths[c]
local height = heights[r]
local depth = depths[r]
--
for x=1,drc.nx-1 do
width = width + widths[c+x]
end
--
local total = height + depth
local ny = drc.ny
if ny > 1 then
for y=1,ny-1 do
local nxt = r + y
total = total + heights[nxt] + depths[nxt]
end
end
--
texsetdimen("d_tabl_x_width",width)
texsetdimen("d_tabl_x_height",total)
texsetdimen("d_tabl_x_depth",0) -- for now
end
function xtables.set_construct()
local r = data.currentrow
local c = data.currentcolumn
local rows = data.rows
local row = rows[r]
-- while row[c].span do -- can also be previous row ones
-- c = c + 1
-- end
local drc = row[c]
-- this will change as soon as in luatex we can reset a box list without freeing
drc.list = takebox("b_tabl_x")
-- c = c + drc.nx - 1
-- data.currentcolumn = c
end
local function showwidths(where,widths,autowidths)
local result = { }
for i=1,#widths do
result[#result+1] = format("%12s%s",points(widths[i]),autowidths[i] and "*" or " ")
end
return report_xtable("%s widths: %s",where,concat(result," "))
end
function xtables.reflow_width()
local nofrows = data.nofrows
local nofcolumns = data.nofcolumns
local rows = data.rows
for r=1,nofrows do
local row = rows[r]
for c=1,nofcolumns do
local drc = row[c]
if drc.list then
-- flush_node_list(drc.list)
drc.list = false
end
end
end
-- spread
local settings = data.settings
local options = settings.options
local maxwidth = settings.maxwidth
-- calculate width
local widths = data.widths
local heights = data.heights
local depths = data.depths
local distances = data.distances
local autowidths = data.autowidths
local fixedcolumns = data.fixedcolumns
local frozencolumns = data.frozencolumns
local width = 0
local distance = 0
local nofwide = 0
local widetotal = 0
local available = settings.textwidth - settings.leftmargindistance - settings.rightmargindistance
if trace_xtable then
showwidths("stage 1",widths,autowidths)
end
local noffrozen = 0
-- inspect(data.fixedcspans)
if options[v_max] then
for c=1,nofcolumns do
width = width + widths[c]
if width > maxwidth then
autowidths[c] = true
nofwide = nofwide + 1
widetotal = widetotal + widths[c]
end
if c < nofcolumns then
distance = distance + distances[c]
end
if frozencolumns[c] then
noffrozen = noffrozen + 1 -- brr, should be nx or so
end
end
else
for c=1,nofcolumns do -- also keep track of forced
local fixedwidth = fixedcolumns[c]
if fixedwidth > 0 then
widths[c] = fixedwidth
width = width + fixedwidth
else
width = width + widths[c]
if width > maxwidth then
autowidths[c] = true
nofwide = nofwide + 1
widetotal = widetotal + widths[c]
end
end
if c < nofcolumns then
distance = distance + distances[c]
end
if frozencolumns[c] then
noffrozen = noffrozen + 1 -- brr, should be nx or so
end
end
end
if trace_xtable then
showwidths("stage 2",widths,autowidths)
end
local delta = available - width - distance - (nofcolumns-1) * settings.columndistance
if delta == 0 then
-- nothing to be done
if trace_xtable then
report_xtable("perfect fit")
end
elseif delta > 0 then
-- we can distribute some
if not options[v_stretch] then
-- not needed
if trace_xtable then
report_xtable("too wide but no stretch, delta %p",delta)
end
elseif options[v_width] then
local factor = delta / width
if trace_xtable then
report_xtable("proportional stretch, delta %p, width %p, factor %a",delta,width,factor)
end
for c=1,nofcolumns do
widths[c] = widths[c] + factor * widths[c]
end
else
-- frozen -> a column with option=fixed will not stretch
local extra = delta / (nofcolumns - noffrozen)
if trace_xtable then
report_xtable("normal stretch, delta %p, extra %p",delta,extra)
end
for c=1,nofcolumns do
if not frozencolumns[c] then
widths[c] = widths[c] + extra
end
end
end
elseif nofwide > 0 then
while true do
done = false
local available = (widetotal + delta) / nofwide
if trace_xtable then
report_xtable("shrink check, total %p, delta %p, columns %s, fixed %p",widetotal,delta,nofwide,available)
end
for c=1,nofcolumns do
if autowidths[c] and available >= widths[c] then
autowidths[c] = nil
nofwide = nofwide - 1
widetotal = widetotal - widths[c]
done = true
end
end
if not done then
break
end
end
-- maybe also options[v_width] here but tricky as width does not say
-- much about amount
if options[v_width] then -- not that much (we could have a clever vpack loop balancing .. no fun)
local factor = (widetotal + delta) / width
if trace_xtable then
report_xtable("proportional shrink used, total %p, delta %p, columns %s, factor %s",widetotal,delta,nofwide,factor)
end
for c=1,nofcolumns do
if autowidths[c] then
widths[c] = factor * widths[c]
end
end
else
local available = (widetotal + delta) / nofwide
if trace_xtable then
report_xtable("normal shrink used, total %p, delta %p, columns %s, fixed %p",widetotal,delta,nofwide,available)
end
for c=1,nofcolumns do
if autowidths[c] then
widths[c] = available
end
end
end
end
if trace_xtable then
showwidths("stage 3",widths,autowidths)
end
--
data.currentrow = 0
data.currentcolumn = 0
--
-- inspect(data)
end
function xtables.reflow_height()
data.currentrow = 0
data.currentcolumn = 0
local settings = data.settings
--
-- analyze ny
--
local nofrows = data.nofrows
local nofcolumns = data.nofcolumns
local widths = data.widths
local heights = data.heights
local depths = data.depths
--
for r=1,nofrows do
for c=1,nofcolumns do
local drc = data.rows[r][c]
if drc then
local ny = drc.ny
if ny > 1 then
local height = heights[r]
local depth = depths[r]
local total = height + depth
local htdp = drc.ht + drc.dp
for y=1,ny-1 do
local nxt = r + y
total = total + heights[nxt] + depths[nxt]
end
local delta = htdp - total
if delta > 0 then
delta = delta / ny
for y=0,ny-1 do
local nxt = r + y
heights[nxt] = heights[nxt] + delta
end
end
end
end
end
end
--
if settings.options[v_height] then
local totalheight = 0
local totaldepth = 0
for i=1,nofrows do
totalheight = totalheight + heights[i]
totalheight = totalheight + depths [i]
end
local total = totalheight + totaldepth
local leftover = settings.textheight - total
if leftover > 0 then
local leftheight = (totalheight / total) * leftover / #heights
local leftdepth = (totaldepth / total) * leftover / #depths
for i=1,nofrows do
heights[i] = heights[i] + leftheight
depths [i] = depths [i] + leftdepth
end
end
end
--
-- inspect(data)
end
local function showspans(data)
local rows = data.rows
local modes = data.modes
local nofcolumns = data.nofcolumns
local nofrows = data.nofrows
for r=1,nofrows do
local line = { }
local row = rows[r]
for c=1,nofcolumns do
local cell =row[c]
if cell.list then
line[#line+1] = "list"
elseif cell.span then
line[#line+1] = "span"
else
line[#line+1] = "none"
end
end
report_xtable("%3d : %s : % t",r,namedmodes[modes[r]] or "----",line)
end
end
function xtables.construct()
local rows = data.rows
local heights = data.heights
local depths = data.depths
local widths = data.widths
local spans = data.spans
local distances = data.distances
local modes = data.modes
local settings = data.settings
local nofcolumns = data.nofcolumns
local nofrows = data.nofrows
local columndistance = settings.columndistance
local rowdistance = settings.rowdistance
local leftmargindistance = settings.leftmargindistance
local rightmargindistance = settings.rightmargindistance
local rowproperties = data.rowproperties
-- ranges can be mixes so we collect
if trace_xtable then
showspans(data)
end
local ranges = {
[head_mode] = { },
[foot_mode] = { },
[more_mode] = { },
[body_mode] = { },
}
for r=1,nofrows do
local m = modes[r]
if m == 0 then
m = body_mode
end
local range = ranges[m]
range[#range+1] = r
end
-- todo: hook in the splitter ... the splitter can ask for a chunk of
-- a certain size ... no longer a split memory issue then and header
-- footer then has to happen here too .. target height
local function packaged_column(r)
local row = rows[r]
local start = nil
local stop = nil
if leftmargindistance > 0 then
start = new_kern(leftmargindistance)
stop = start
end
local hasspan = false
for c=1,nofcolumns do
local drc = row[c]
if not hasspan then
hasspan = drc.span
end
local list = drc.list
if list then
setfield(list,"shift",getfield(list,"height") + getfield(list,"depth"))
-- list = hpack_node_list(list) -- is somehow needed
-- setfield(list,"width",0)
-- setfield(list,"height",0)
-- setfield(list,"depth",0)
-- faster:
local h = new_hlist()
setfield(h,"list",list)
list = h
--
if start then
setfield(stop,"next",list)
setfield(list,"prev",stop)
else
start = list
end
stop = list
end
local step = widths[c]
if c < nofcolumns then
step = step + columndistance + distances[c]
end
local kern = new_kern(step)
if stop then
setfield(stop,"next",kern)
setfield(kern,"prev",stop)
else -- can be first spanning next row (ny=...)
start = kern
end
stop = kern
end
if start then
if rightmargindistance > 0 then
local kern = new_kern(rightmargindistance)
setfield(stop,"next",kern)
setfield(kern,"prev",stop)
-- stop = kern
end
return start, heights[r] + depths[r], hasspan
end
end
local function collect_range(range)
local result, nofr = { }, 0
local nofrange = #range
for i=1,#range do
local r = range[i]
-- local row = rows[r]
local list, size, hasspan = packaged_column(r)
if list then
if hasspan and nofr > 0 then
result[nofr][4] = true
end
nofr = nofr + 1
local rp = rowproperties[r]
-- we have a direction issue here but hpack_node_list(list,0,"exactly","TLT") cannot be used
-- due to the fact that we need the width
local hbox = hpack_node_list(list)
setfield(hbox,"dir","TLT")
result[nofr] = {
hbox,
size,
i < nofrange and rowdistance > 0 and rowdistance or false, -- might move
false,
rp and rp.samepage or false,
}
end
end
if nofr > 0 then
-- the [5] slot gets the after break
result[1] [5] = false
result[nofr][5] = false
for i=2,nofr-1 do
local r = result[i]
if r == v_both or r == v_before then
result[i-1][5] = true
elseif r == v_after then
result[i][5] = true
end
end
end
return result
end
local body = collect_range(ranges[body_mode])
data.results = {
[head_mode] = collect_range(ranges[head_mode]),
[foot_mode] = collect_range(ranges[foot_mode]),
[more_mode] = collect_range(ranges[more_mode]),
[body_mode] = body,
}
if #body == 0 then
texsetcount("global","c_tabl_x_state",0)
texsetdimen("global","d_tabl_x_final_width",0)
else
texsetcount("global","c_tabl_x_state",1)
texsetdimen("global","d_tabl_x_final_width",getfield(body[1][1],"width"))
end
end
-- todo: join as that is as efficient as fushing multiple
local function inject(row,copy,package)
local list = row[1]
if copy then
row[1] = copy_node_list(list)
end
if package then
context_beginvbox()
context(tonode(list))
context(tonode(new_kern(row[2])))
context_endvbox()
context_nointerlineskip() -- figure out a better way
if row[4] then
-- nothing as we have a span
elseif row[5] then
if row[3] then
context_blank { v_samepage, row[3] .. "sp" }
else
context_blank { v_samepage }
end
elseif row[3] then
context_blank { row[3] .. "sp" } -- why blank ?
else
context(tonode(new_glue(0)))
end
else
context(tonode(list))
context(tonode(new_kern(row[2])))
if row[3] then
context(tonode(new_glue(row[3])))
end
end
end
local function total(row,distance)
local n = #row > 0 and rowdistance or 0
for i=1,#row do
local ri = row[i]
n = n + ri[2] + (ri[3] or 0)
end
return n
end
-- local function append(list,what)
-- for i=1,#what do
-- local l = what[i]
-- list[#list+1] = l[1]
-- local k = l[2] + (l[3] or 0)
-- if k ~= 0 then
-- list[#list+1] = new_kern(k)
-- end
-- end
-- end
local function spanheight(body,i)
local height, n = 0, 1
while true do
local bi = body[i]
if bi then
height = height + bi[2] + (bi[3] or 0)
if bi[4] then
n = n + 1
i = i + 1
else
break
end
else
break
end
end
return height, n
end
function xtables.flush(directives) -- todo split by size / no inbetween then .. glue list kern blank
local height = directives.height
local method = directives.method or v_normal
local settings = data.settings
local results = data.results
local rowdistance = settings.rowdistance
local head = results[head_mode]
local foot = results[foot_mode]
local more = results[more_mode]
local body = results[body_mode]
local repeatheader = settings.header == v_repeat
local repeatfooter = settings.footer == v_repeat
if height and height > 0 then
context_beginvbox()
local bodystart = data.bodystart or 1
local bodystop = data.bodystop or #body
if bodystart > 0 and bodystart <= bodystop then
local bodysize = height
local footsize = total(foot,rowdistance)
local headsize = total(head,rowdistance)
local moresize = total(more,rowdistance)
local firstsize, firstspans = spanheight(body,bodystart)
if bodystart == 1 then -- first chunk gets head
bodysize = bodysize - headsize - footsize
if headsize > 0 and bodysize >= firstsize then
for i=1,#head do
inject(head[i],repeatheader)
end
if rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
if not repeatheader then
results[head_mode] = { }
end
end
elseif moresize > 0 then -- following chunk gets next
bodysize = bodysize - footsize - moresize
if bodysize >= firstsize then
for i=1,#more do
inject(more[i],true)
end
if rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
end
elseif headsize > 0 and repeatheader then -- following chunk gets head
bodysize = bodysize - footsize - headsize
if bodysize >= firstsize then
for i=1,#head do
inject(head[i],true)
end
if rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
end
else -- following chunk gets nothing
bodysize = bodysize - footsize
end
if bodysize >= firstsize then
local i = bodystart
while i <= bodystop do -- room for improvement
local total, spans = spanheight(body,i)
local bs = bodysize - total
if bs > 0 then
bodysize = bs
for s=1,spans do
inject(body[i])
body[i] = nil
i = i + 1
end
bodystart = i
else
break
end
end
if bodystart > bodystop then
-- all is flushed and footer fits
if footsize > 0 then
if rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
for i=1,#foot do
inject(foot[i])
end
results[foot_mode] = { }
end
results[body_mode] = { }
texsetcount("global","c_tabl_x_state",0)
else
-- some is left so footer is delayed
-- todo: try to flush a few more lines
if repeatfooter and footsize > 0 then
if rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
for i=1,#foot do
inject(foot[i],true)
end
else
-- todo: try to fit more of body
end
texsetcount("global","c_tabl_x_state",2)
end
else
if firstsize > height then
-- get rid of the too large cell
for s=1,firstspans do
inject(body[bodystart])
body[bodystart] = nil
bodystart = bodystart + 1
end
end
texsetcount("global","c_tabl_x_state",2) -- 1
end
else
texsetcount("global","c_tabl_x_state",0)
end
data.bodystart = bodystart
data.bodystop = bodystop
context_endvbox()
else
if method == variables.split then
-- maybe also a non float mode with header/footer repeat although
-- we can also use a float without caption
for i=1,#head do
inject(head[i],false,true)
end
if #head > 0 and rowdistance > 0 then
context_blank { rowdistance .. "sp" }
end
for i=1,#body do
inject(body[i],false,true)
end
if #foot > 0 and rowdistance > 0 then
context_blank { rowdistance .. "sp" }
end
for i=1,#foot do
inject(foot[i],false,true)
end
else -- normal
context_beginvbox()
for i=1,#head do
inject(head[i])
end
if #head > 0 and rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
for i=1,#body do
inject(body[i])
end
if #foot > 0 and rowdistance > 0 then
context(tonode(new_glue(rowdistance)))
end
for i=1,#foot do
inject(foot[i])
end
context_endvbox()
end
results[head_mode] = { }
results[body_mode] = { }
results[foot_mode] = { }
texsetcount("global","c_tabl_x_state",0)
end
end
function xtables.cleanup()
for mode, result in next, data.results do
for _, r in next, result do
flush_node_list(r[1])
end
end
-- local rows = data.rows
-- for i=1,#rows do
-- local row = rows[i]
-- for i=1,#row do
-- local cell = row[i]
-- local list = cell.list
-- if list then
-- cell.width = getfield(list,"width")
-- cell.height = getfield(list,"height")
-- cell.depth = getfield(list,"depth")
-- cell.list = true
-- end
-- end
-- end
-- data.result = nil
-- inspect(data)
data = table.remove(stack)
end
function xtables.next_row(specification)
local r = data.currentrow + 1
data.modes[r] = texgetcount("c_tabl_x_mode")
data.currentrow = r
data.currentcolumn = 0
data.rowproperties[r] = specification
end
function xtables.finish_row()
local n = data.nofcolumns - data.currentcolumn
if n > 0 then
-- message
for i=1,n do
context_dummyxcell()
end
end
end
-- eventually we might only have commands
implement {
name = "x_table_create",
actions = xtables.create,
arguments = {
{
{ "option" },
{ "textwidth", "dimen" },
{ "textheight", "dimen" },
{ "maxwidth", "dimen" },
{ "lineheight", "dimen" },
{ "columndistance", "dimen" },
{ "leftmargindistance", "dimen" },
{ "rightmargindistance", "dimen" },
{ "rowdistance", "dimen" },
{ "header" },
{ "footer" },
}
}
}
implement {
name = "x_table_flush",
actions = xtables.flush,
arguments = {
{
{ "method" },
{ "height", "dimen" }
}
}
}
implement { name = "x_table_reflow_width", actions = xtables.reflow_width }
implement { name = "x_table_reflow_height", actions = xtables.reflow_height }
implement { name = "x_table_construct", actions = xtables.construct }
implement { name = "x_table_cleanup", actions = xtables.cleanup }
implement { name = "x_table_next_row", actions = xtables.next_row }
implement { name = "x_table_next_row_option", actions = xtables.next_row, arguments = "string" }
implement { name = "x_table_finish_row", actions = xtables.finish_row }
implement { name = "x_table_init_reflow_width", actions = xtables.initialize_reflow_width }
implement { name = "x_table_init_reflow_height", actions = xtables.initialize_reflow_height }
implement { name = "x_table_init_reflow_width_option", actions = xtables.initialize_reflow_width, arguments = "string" }
implement { name = "x_table_init_reflow_height_option", actions = xtables.initialize_reflow_height, arguments = "string" }
implement { name = "x_table_init_construct", actions = xtables.initialize_construct }
implement { name = "x_table_set_reflow_width", actions = xtables.set_reflow_width }
implement { name = "x_table_set_reflow_height", actions = xtables.set_reflow_height }
implement { name = "x_table_set_construct", actions = xtables.set_construct }
implement { name = "x_table_r", actions = function() context(data.currentrow or 0) end }
implement { name = "x_table_c", actions = function() context(data.currentcolumn or 0) end }
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