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if not modules then modules = { } end modules ['typo-adj'] = {
version = 1.001,
optimize = true,
comment = "companion to typo-adj.mkxl",
author = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
copyright = "PRAGMA ADE / ConTeXt Development Team",
license = "see context related readme files"
}
local setdimen = tex.setdimen
local setcount = tex.setcount
local setmacro = tokens.setters.macro
local expandmacro = token.expandmacro
local nuts = nodes.nuts
local getid = nuts.getid
local getlist = nuts.getlist
local getwhd = nuts.getwhd
local getattr = nuts.getattr
local getwidth = nuts.getwidth
local setlist = nuts.setlist
local setlink = nuts.setlink
local setstate = nuts.setstate
local setattr = nuts.setattr
local hlist_code = nodes.nodecodes.hlist
local vlist_code = nodes.nodecodes.vlist
local getbox = nuts.getbox
local takebox = nuts.takebox
local new_kern = nuts.pool.kern
local flattenleaders = nuts.flattenleaders
local traverselist = nuts.traverselist
local traverseleader = nuts.traverseleader
local a_adaptive = attributes.private("adaptive")
local registervalue = attributes.registervalue
local getvalue = attributes.getvalue
local hasvalues = attributes.hasvalues
local texsetattribute = tex.setattribute
local adaptive = nodes.adaptive or { }
nodes.adaptive = adaptive
local enabled = false
local enableaction = nodes.tasks.enableaction
function adaptive.set(settings)
if not enabled then
enableaction("vboxbuilders","nodes.adaptive.handlehorizontal")
enableaction("vboxhandlers","nodes.adaptive.handlevertical")
enabled = true
end
texsetattribute(a_adaptive,registervalue(a_adaptive,settings))
end
local function setadaptive(w,h,d,l,c)
setdimen("d_adaptive_width",w)
setdimen("d_adaptive_height",h)
setdimen("d_adaptive_depth",d)
setdimen("d_adaptive_line",l)
setmacro("m_adaptive_color",c)
end
local methods = {
-- overlay
[1] = function(settings,parent,list)
local setups = settings.setups
if setups and setups ~= "" then
local w, h, d = getwhd(parent)
setadaptive(w,h,d,settings.rulethickness,settings.color)
expandmacro("setup",true,setups)
local l = takebox("b_adaptive_box")
if l then
setlist(parent, setlink(l,new_kern(-getwidth(l)),list))
end
end
end
}
-- The hlist leaders get done before we enter vpacking, so that is where the
-- first call kicks in. Then we do a vpack (so one can indeed also adapt the
-- ht/dp). After packing we know the glue and do the vlist leaders.
local function handlehorizontal(n)
if hasvalues(a_adaptive) then
for _, t, _, l in traverselist(n) do
if t == hlist_code then
for m, _, _, ll in traverseleader(l) do
local a = getattr(m,a_adaptive)
if a then
local settings = getvalue(a_adaptive,a)
if settings then
setstate(m,0)
local action = methods[settings.method or 1]
if action then
action(settings,m,ll)
end
end
end
end
end
end
end
return n
end
local function handlevertical(n)
if hasvalues(a_adaptive) then
-- not a list just a node
for nn, t, _, l in traverselist(n) do
if t == vlist_code then
for m, _, _, ll in traverseleader(l) do
local a = getattr(m,a_adaptive)
if a then
local settings = getvalue(a_adaptive,a)
if settings then
setstate(m,0)
local action = methods[settings.method or 1]
if action then
action(settings,m,ll)
end
end
end
end
end
end
end
return n
end
adaptive.handlehorizontal = handlehorizontal
adaptive.handlevertical = handlevertical
interfaces.implement {
name = "setadaptive",
actions = adaptive.set,
arguments = {
{
{ "setups", "string" },
{ "method", "integer" },
{ "mp", "string" },
{ "color", "string" },
{ "rulethickness", "dimension" },
}
}
}
interfaces.implement {
name = "adaptivecheckbox",
arguments = "integer",
public = true,
protected = true,
actions = function(n)
local b = getbox(n)
if b and flattenleaders(b) > 0 then
if getid(b) == hlist_code then
handlehorizontal(b)
else
handlevertical(b)
end
end
end,
}
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