diff options
Diffstat (limited to 'tex/context/base/pack-rul.lua')
| -rw-r--r-- | tex/context/base/pack-rul.lua | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/tex/context/base/pack-rul.lua b/tex/context/base/pack-rul.lua new file mode 100644 index 000000000..378167c97 --- /dev/null +++ b/tex/context/base/pack-rul.lua @@ -0,0 +1,53 @@ +if not modules then modules = { } end modules ['pack-rul'] = { + version = 1.001, + comment = "companion to pack-rul.mkiv", + author = "Hans Hagen, PRAGMA-ADE, Hasselt NL", + copyright = "PRAGMA ADE / ConTeXt Development Team", + license = "see context related readme files" +} + +--[[ldx-- +<p>An explanation is given in the history document <t>mk</t>.</p> +--ldx]]-- + +local texdimen, texcount, texbox = tex.dimen, tex.count, tex.box +local hpack, free, copy, traverse_id = node.hpack, node.free, node.copy_list, node.traverse_id + +function commands.doreshapeframedbox(n) + local noflines, lastlinelength, box = 0, 0, texbox[n] + if box.width ~= 0 then + local list = box.list + if list then + local width, done = 0, false + for h in traverse_id('hlist',list) do -- no dir etc needed + local l = h.list + if l then + done = true + local p = hpack(copy(l)) + lastlinelength = p.width + if lastlinelength > width then + width = lastlinelength + end + free(p) + end + end + if done then + if width ~= 0 then + for h in traverse_id('hlist',list) do + local l = h.list + if l then + -- if h.width ~= width then -- else no display math handling (uses shift) + h.list = hpack(l,width,'exactly',h.dir) + h.shift = 0 -- needed for display math + h.width = width + -- end + end + end + end + box.width = width + end + end + end + texdimen["framedlastlength"] = lastlinelength + texcount["framednoflines"] = noflines +end |