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if not modules then modules = { } end modules ['meta-imp-txt'] = {
version = 1.001,
comment = "companion to meta-imp-txt.mkiv",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files",
}
local setmetatableindex = table.setmetatableindex
local texset = tex.set
local scan = mp.scan
local scannumeric = scan.numeric
local scaninteger = scan.integer
local scanboolean = scan.boolean
local scanstring = scan.string
local expandmacro = token.expandmacro -- todo
local bpfactor = number.dimenfactors.bp
local metapost = metapost
metapost.parshapes = { }
local parshapes = { }
local properties = { }
-- initialize shapes to 0 hsize
function metapost.parshapes.reset()
parshapes = { }
properties = { }
end
function metapost.parshapes.next()
properties = { }
parshapes[#parshapes+1] = properties
end
function metapost.parshapes.inspect()
inspect(parshapes)
end
function metapost.parshapes.getshape(n)
return (parshapes and parshapes[n]) or parshapes or nil
end
function metapost.parshapes.get(index,name)
local v = parshapes[index][name]
if type(v) == "boolean" then
context(v and 1 or 0)
else
context(v)
end
end
function metapost.parshapes.wholeshape() -- maybe just collect them earlier
local t, n = { }, 0
for i=1,#parshapes do
local s = parshapes[i].shape
if s then
for i=1,#s do
n = n + 1
t[n] = s[i]
end
end
end
if n > 0 then
texset("parshape",t)
end
end
metapost.registerscript("setparshapeproperty", function()
local k = scanstring()
if k == "line" then
local entry = properties.shape[scannumeric()]
local indent = scannumeric() / bpfactor
local width = scannumeric() / bpfactor
entry[1] = indent
entry[2] = width
elseif k == "lines" then
properties.lines = scaninteger()
properties.shape = setmetatableindex(function(t,k)
local v = { 0, properties.width or 0 }
t[k] = v
return v
end)
elseif k == "first" then
properties[k] = scanboolean()
elseif k == "inspect" then
inspect(properties)
else
properties[k] = scannumeric() / bpfactor
end
end)
interfaces.implement {
name = "setparagraphmetashape",
public = true,
protected = true,
arguments = "optional",
actions = function(list)
if list and list ~= "" then
list = utilities.parsers.settings_to_array(list)
if #list > 0 then
metapost.parshapes.reset()
for i=1,#list do
metapost.parshapes.next()
expandmacro("spac_shapes_calculate","{"..list[i].."}")
end
metapost.parshapes.wholeshape()
end
end
end
}
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