From 744095aa4676553437db0d71c281a74557a3222f Mon Sep 17 00:00:00 2001
From: Hans Hagen <pragma@wxs.nl>
Date: Sun, 18 Nov 2018 16:12:36 +0100
Subject: 2018-11-18 14:16:00

---
 tex/context/base/mkiv/back-res.lua | 44 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 tex/context/base/mkiv/back-res.lua

(limited to 'tex/context/base/mkiv/back-res.lua')

diff --git a/tex/context/base/mkiv/back-res.lua b/tex/context/base/mkiv/back-res.lua
new file mode 100644
index 000000000..be92c74a6
--- /dev/null
+++ b/tex/context/base/mkiv/back-res.lua
@@ -0,0 +1,44 @@
+if not modules then modules = { } end modules ['back-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"
+}
+
+-- A box resource has an index. This happens to be an object number
+-- due to the pdf backend but in fact it's an abstraction. This is why
+-- we have explicit fetchers. The internal number (as in \Fm123) is yet
+-- another number.
+
+local tex_saveboxresource          = tex.saveboxresource
+local tex_useboxresource           = tex.useboxresource
+local tex_getboxresourcebox        = tex.getboxresourcebox
+local tex_getboxresourcedimensions = tex.getboxresourcedimensions
+
+updaters.register("backend.update",function()
+    tex_saveboxresource          = tex.saveboxresource
+    tex_useboxresource           = tex.useboxresource
+    tex_getboxresourcebox        = tex.getboxresourcebox
+    tex_getboxresourcedimensions = tex.getboxresourcedimensions
+end)
+
+tex.boxresources = {
+    save          = function(...) return tex_saveboxresource(...) end,
+    use           = function(...) return tex_useboxresource(...) end,
+    getbox        = function(...) return tex_getboxresourcebox(...) end,
+    getdimensions = function(...) return tex_getboxresourcedimensions(...) end,
+}
+
+-- local tex_saveimageresource = tex.saveimageresource
+-- local tex_useimageresource  = tex.useimageresource
+--
+-- updaters.register("backend.update",function()
+--     tex_saveimageresource = tex.saveimageresource
+--     tex_useimageresource  = tex.useimageresource
+-- end)
+--
+-- tex.imageresources = {
+--     save = function(...) return tex_saveimageresource(...) end,
+--     use  = function(...) return tex_useimageresource(...) end,
+-- }
-- 
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