diff options
Diffstat (limited to 'tex/context/base/pack-rul.lua')
| -rw-r--r-- | tex/context/base/pack-rul.lua | 73 |
1 files changed, 43 insertions, 30 deletions
diff --git a/tex/context/base/pack-rul.lua b/tex/context/base/pack-rul.lua index fc6295018..1f41b505a 100644 --- a/tex/context/base/pack-rul.lua +++ b/tex/context/base/pack-rul.lua @@ -10,19 +10,23 @@ if not modules then modules = { } end modules ['pack-rul'] = { <p>An explanation is given in the history document <t>mk</t>.</p> --ldx]]-- -local hpack = node.hpack -local free = node.free -local copy = node.copy_list -local traverse_id = node.traverse_id -local node_dimensions = node.dimensions +-- we need to be careful with display math as it uses shifts +-- challenge: adapt glue_set +-- setfield(h,"glue_set", getfield(h,"glue_set") * getfield(h,"width")/maxwidth -- interesting ... doesn't matter much local hlist_code = nodes.nodecodes.hlist local vlist_code = nodes.nodecodes.vlist local box_code = nodes.listcodes.box +local line_code = nodes.listcodes.line local texsetdimen = tex.setdimen local texsetcount = tex.setcount local texgetbox = tex.getbox +local hpack = nodes.hpack +local free = nodes.free +local copy = nodes.copy_list +local traverse_id = nodes.traverse_id +local node_dimensions = nodes.dimensions function commands.doreshapeframedbox(n) local box = texgetbox(n) @@ -38,7 +42,7 @@ function commands.doreshapeframedbox(n) if boxwidth ~= 0 then -- and h.subtype == vlist_code local list = box.list if list then - local function check(n,usewidth) + local function check(n,repack) if not firstheight then firstheight = n.height end @@ -46,10 +50,15 @@ function commands.doreshapeframedbox(n) noflines = noflines + 1 local l = n.list if l then - if usewidth or n.subtype == box_code then -- maybe more - lastlinelength = n.width + if repack then + local subtype = n.subtype + if subtype == box_code or subtype == line_code then + lastlinelength = node_dimensions(l,l.dir) -- used to be: hpack(copy(l)).width + else + lastlinelength = n.width + end else - lastlinelength = node_dimensions(l) -- used to be: hpack(copy(l)).width + lastlinelength = n.width end if lastlinelength > maxwidth then maxwidth = lastlinelength @@ -61,39 +70,43 @@ function commands.doreshapeframedbox(n) end end local hdone = false - -- local vdone = false for h in traverse_id(hlist_code,list) do -- no dir etc needed - check(h) + check(h,true) hdone = true end + -- local vdone = false for v in traverse_id(vlist_code,list) do -- no dir etc needed - check(v) + check(v,false) -- vdone = true end - if firstheight then - if maxwidth ~= 0 then - if hdone then - for h in traverse_id(hlist_code,list) do - local l = h.list - if l then - if h.subtype == box_code then - -- explicit box, no 'line' - else - -- if h.width ~= maxwidth then -- else no display math handling (uses shift) - -- challenge: adapt glue_set - -- h.glue_set = h.glue_set * h.width/maxwidth -- interesting ... doesn't matter much - -- h.width = maxwidth - h.list = hpack(l,maxwidth,'exactly',h.dir) - h.shift = 0 -- needed for display math - h.width = maxwidth - -- end - end + if not firstheight then + -- done + elseif maxwidth ~= 0 then + if hdone then + for h in traverse_id(hlist_code,list) do + local l = h.list + if l then + local subtype = h.subtype + if subtype == box_code or subtype == line_code then + h.list = hpack(l,maxwidth,'exactly',h.dir) + h.shift = 0 -- needed for display math end + h.width = maxwidth end end box.width = maxwidth -- moved averagewidth = noflines > 0 and totalwidth/noflines or 0 end + -- if vdone then + -- for v in traverse_id(vlist_code,list) do + -- local width = n.width + -- if width > maxwidth then + -- v.width = maxwidth + -- end + -- end + -- end + box.width = maxwidth + averagewidth = noflines > 0 and totalwidth/noflines or 0 end end end |