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-rw-r--r--tex/context/base/lpdf-res.lua39
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diff --git a/tex/context/base/lpdf-res.lua b/tex/context/base/lpdf-res.lua
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+++ b/tex/context/base/lpdf-res.lua
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+if not modules then modules = { } end modules ['lpdf-res'] = {
+ 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 codeinjections = backends.codeinjections
+local implement = interfaces.implement
+
+local nuts = nodes.nuts
+local tonut = nodes.tonut
+
+local setfield = nuts.setfield
+
+local new_hlist = nuts.pool.hlist
+
+local saveboxresource = tex.saveboxresource
+local useboxresource = tex.useboxresource
+local getboxresource = tex.getboxresourcedimensions
+
+function codeinjections.registerboxresource(n)
+ return saveboxresource(n,nil,lpdf.collectedresources)
+end
+
+function codeinjections.restoreboxresource(index)
+ local hbox = new_hlist()
+ local list, wd, ht, dp = useboxresource(index)
+ setfield(hbox,"list", tonut(list))
+ setfield(hbox,"width", wd)
+ setfield(hbox,"height", ht)
+ setfield(hbox,"depth", dp)
+ return hbox -- so we return a nut !
+end
+
+function codeinjections.boxresourcedimensions(index)
+ return getboxresource(index)
+end