diff options
Diffstat (limited to 'tex/context/base/mkiv/spac-ver.lua')
| -rw-r--r-- | tex/context/base/mkiv/spac-ver.lua | 147 |
1 files changed, 128 insertions, 19 deletions
diff --git a/tex/context/base/mkiv/spac-ver.lua b/tex/context/base/mkiv/spac-ver.lua index 07a58ae47..1410e3278 100644 --- a/tex/context/base/mkiv/spac-ver.lua +++ b/tex/context/base/mkiv/spac-ver.lua @@ -168,6 +168,7 @@ local nodepool = nuts.pool local new_penalty = nodepool.penalty local new_kern = nodepool.kern +local new_glue = nodepool.glue local new_rule = nodepool.rule local nodecodes = nodes.nodecodes @@ -877,7 +878,8 @@ end local trace_list, tracing_info, before, after = { }, false, "", "" local function nodes_to_string(head) - local current, t = head, { } + local current = head + local t = { } while current do local id = getid(current) local ty = nodecodes[id] @@ -1266,17 +1268,26 @@ do if trace then reset_tracing(head) end - local current, oldhead = head, head - local glue_order, glue_data, force_glue = 0, nil, false - local penalty_order, penalty_data, natural_penalty, special_penalty = 0, nil, nil, nil - local parskip, ignore_parskip, ignore_following, ignore_whitespace, keep_together = nil, false, false, false, false - local lastsnap = nil + local current = head + local oldhead = head + local glue_order = 0 + local glue_data + local force_glue = false + local penalty_order = 0 + local penalty_data + local natural_penalty + local special_penalty + local parskip + local ignore_parskip = false + local ignore_following = false + local ignore_whitespace = false + local keep_together = false + local lastsnap + local pagehead + local pagetail -- -- todo: keep_together: between headers -- - local pagehead = nil - local pagetail = nil - local function getpagelist() if not pagehead then pagehead = texlists.page_head @@ -1952,8 +1963,9 @@ do if stackhead then if trace_collect_vspacing then report("%s > appending %s nodes to stack (final): %s",where,newhead) end setlink(stacktail,newhead) - newhead = stackhead - stackhead, stacktail = nil, nil + newhead = stackhead + stackhead = nil + stacktail = nil end if stackhack then stackhack = false @@ -2146,27 +2158,105 @@ do trackers.register("vspacing.forcestrutdepth",function(v) trace = v end) - function vspacing.forcestrutdepth(n,depth,trace_mode) + local last = nil + + -- function vspacing.forcestrutdepth(n,depth,trace_mode,plus) + -- local box = texgetbox(n) + -- if box then + -- box = tonut(box) + -- local head = getlist(box) + -- if head then + -- local tail = find_node_tail(head) + -- if tail and getid(tail) == hlist_code then + -- local dp = getdepth(tail) + -- if dp < depth then + -- setdepth(tail,depth) + -- outer.prevdepth = depth + -- if trace or trace_mode > 0 then + -- nuts.setvisual(tail,"depth") + -- end + -- end + -- end + -- end + -- end + -- end + + function vspacing.forcestrutdepth(n,depth,trace_mode,plus) local box = texgetbox(n) if box then box = tonut(box) local head = getlist(box) if head then local tail = find_node_tail(head) - if tail and getid(tail) == hlist_code then - local dp = getdepth(tail) - if dp < depth then - setdepth(tail,depth) - outer.prevdepth = depth - if trace or trace_mode > 0 then - nuts.setvisual(tail,"depth") + if tail then + if getid(tail) == hlist_code then + local dp = getdepth(tail) + if dp < depth then + setdepth(tail,depth) + outer.prevdepth = depth + if trace or trace_mode > 0 then + nuts.setvisual(tail,"depth") + end + end + end + last = nil + if plus then + -- penalty / skip ... + local height = 0 + local sofar = 0 + local same = false + local seen = false + local list = { } + last = nil + while tail do + local id = getid(tail) + if id == hlist_code or id == vlist_code then + local w, h, d = getwhd(tail) + height = height + h + d + sofar + sofar = 0 + last = tail + elseif id == kern_code then + sofar = sofar + getkern(tail) + elseif id == glue_code then + if seen then + sofar = sofar + getwidth(tail) + seen = false + else + break + end + elseif id == penalty_code then + local p = getpenalty(tail) + if p >= 10000 then + same = true + seen = true + else + break + end + else + break + end + tail = getprev(tail) end + texsetdimen("global","d_spac_prevcontent",same and height or 0) end end end end end + function vspacing.pushatsame() + -- needs better checking ! + if last then -- setsplit + nuts.setnext(getprev(last)) + nuts.setprev(last) + end + end + + function vspacing.popatsame() + -- needs better checking ! + nuts.write(last) + end + end -- interface @@ -2194,6 +2284,25 @@ do } implement { + name = "forcestrutdepthplus", + arguments = { "integer", "dimension", "integer", true }, + actions = vspacing.forcestrutdepth, + scope = "private" + } + + implement { + name = "pushatsame", + actions = vspacing.pushatsame, + scope = "private" + } + + implement { + name = "popatsame", + actions = vspacing.popatsame, + scope = "private" + } + + implement { name = "vspacingsetamount", actions = vspacing.setskip, scope = "private", |