2016-01-12 16:26:00

1 files changed, 32 insertions, 0 deletions

diff --git a/tex/context/base/mkiv/luat-bwc.lua b/tex/context/base/mkiv/luat-bwc.lua
new file mode 100644
index 000000000..993de7bf3
--- /dev/null
+++ b/tex/context/base/mkiv/luat-bwc.lua
@@ -0,0 +1,32 @@
+if not modules then modules = { } end modules ['luat-bwc'] = {
+    version   = 1.001,
+    comment   = "companion to luat-lib.mkiv",
+    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
+    copyright = "PRAGMA ADE / ConTeXt Development Team",
+    license   = "see context related readme files"
+}
+
+-- backward compatibility
+
+if not tex.wd then
+
+    local box = tex.box
+
+    local wd = { } setmetatable(wd, {
+        __index    = function(t,k)   local bk = box[k] return bk and bk.width or 0 end,
+        __newindex = function(t,k,v) local bk = box[k] if bk then bk.width = v end end,
+    } )
+
+    local ht = { } setmetatable(ht, {
+        __index    = function(t,k)   local bk = box[k] return bk and bk.height or 0 end,
+        __newindex = function(t,k,v) local bk = box[k] if bk then bk.height = v end end,
+    } )
+
+    local dp = { } setmetatable(dp, {
+        __index    = function(t,k)   local bk = box[k] return bk and bk.depth or 0 end,
+        __newindex = function(t,k,v) local bk = box[k] if bk then bk.depth = v end end,
+    } )
+
+ -- tex.wd, tex.ht, tex.dp = wd, ht, dp
+
+end