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if not modules then modules = { } end modules ['lpdf-vfc'] = {
version = 1.001,
comment = "companion to lpdf-ini.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 formatters = string.formatters
local bp = number.dimenfactors.bp
local r = 16384 * bp
local f_1 = formatters["%.6F w 0 %.6F %.6F %.6F re f"]
local f_2 = formatters["[] 0 d 0 J %.6F w %.6F %.6F %.6F %.6F re S"]
local vfspecials = backends.pdf.tables.vfspecials
vfspecials.backgrounds = setmetatableindex(function(t,h)
local h = h * bp
local v = setmetatableindex(function(t,d)
local d = d * bp
local v = setmetatableindex(function(t,w)
local v = { "pdf", "origin", f_1(r,-d,w*bp,h+d) }
t[w] = v
return v
end)
t[d] = v
return v
end)
t[h] = v
return v
end)
vfspecials.outlines = setmetatableindex(function(t,h)
local h = h * bp
local v = setmetatableindex(function(t,d)
local d = d * bp
local v = setmetatableindex(function(t,w)
-- the frame goes through the boundingbox
local v = { "pdf", "origin", f_2(r,r/2,-d+r/2,w*bp-r,h+d-r) }
t[w] = v
return v
end)
t[d] = v
return v
end)
t[h] = v
return v
end)
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