diff options
Diffstat (limited to 'tex/context/base/typo-drp.lua')
| -rw-r--r-- | tex/context/base/typo-drp.lua | 121 |
1 files changed, 13 insertions, 108 deletions
diff --git a/tex/context/base/typo-drp.lua b/tex/context/base/typo-drp.lua index 36b873081..9d6d645d0 100644 --- a/tex/context/base/typo-drp.lua +++ b/tex/context/base/typo-drp.lua @@ -32,14 +32,18 @@ local getchar = nuts.getchar local getid = nuts.getid local getsubtype = nuts.getsubtype local getfield = nuts.getfield -local setfield = nuts.setfield local getattr = nuts.getattr + +local setfield = nuts.setfield local setattr = nuts.setattr +local setlink = nuts.setlink +local setprev = nuts.setprev +local setnext = nuts.setnext +local setchar = nuts.setchar local hpack_nodes = nuts.hpack local nodecodes = nodes.nodecodes -local whatsitcodes = nodes.whatsitcodes local nodepool = nuts.pool local new_kern = nodepool.kern @@ -66,8 +70,7 @@ local glyph_code = nodecodes.glyph local hlist_code = nodecodes.hlist local glue_code = nodecodes.glue local kern_code = nodecodes.kern -local whatsit_code = nodecodes.whatsit -local localpar_code = nodecodes.localpar or whatsitcodes.localpar +local localpar_code = nodecodes.localpar local actions = { } initials.actions = actions @@ -127,104 +130,10 @@ interfaces.implement { -- todo: prevent linebreak .. but normally a initial ends up at the top of -- a page so this has a low priority --- actions[v_default] = function(head,setting) --- local done = false --- local id = getid(head) --- if (id == localpar_code) or (id == whatsit_code and getsubtype(head) == localpar_code) then --- -- begin of par --- local first = getnext(head) --- -- parbox .. needs to be set at 0 --- if first and getid(first) == hlist_code then --- first = getnext(first) --- end --- -- we need to skip over kerns and glues (signals) --- while first and getid(first) ~= glyph_code do --- first = getnext(first) --- end --- if first and getid(first) == glyph_code then --- local char = getchar(first) --- local prev = getprev(first) --- local next = getnext(first) --- -- if getid(prev) == hlist_code then --- -- -- set the width to 0 --- -- end --- if next and getid(next) == kern_code then --- setfield(next,"kern",0) --- end --- if setting.font then --- setfield(first,"font",setting.font) --- end --- if setting.dynamic > 0 then --- setattr(first,0,setting.dynamic) --- end --- -- can be a helper --- local ma = setting.ma or 0 --- local ca = setting.ca --- local ta = setting.ta --- if ca and ca > 0 then --- setattr(first,a_colorspace,ma == 0 and 1 or ma) --- setattr(first,a_color,ca) --- end --- if ta and ta > 0 then --- setattr(first,a_transparency,ta) --- end --- -- --- local width = getfield(first,"width") --- local height = getfield(first,"height") --- local depth = getfield(first,"depth") --- local distance = setting.distance or 0 --- local voffset = setting.voffset or 0 --- local hoffset = setting.hoffset or 0 --- local parindent = tex.parindent --- local baseline = texget("baselineskip").width --- local lines = tonumber(setting.n) or 0 --- -- --- setfield(first,"xoffset",- width - hoffset - distance - parindent) --- setfield(first,"yoffset",- voffset) -- no longer - height here --- -- We pack so that successive handling cannot touch the dropped cap. Packaging --- -- in a hlist is also needed because we cannot locally adapt e.g. parindent (not --- -- yet stored in with localpar). --- setfield(first,"prev",nil) --- setfield(first,"next",nil) --- local h = hpack_nodes(first) --- setfield(h,"width",0) --- setfield(h,"height",0) --- setfield(h,"depth",0) --- setfield(prev,"next",h) --- setfield(next,"prev",h) --- setfield(h,"next",next) --- setfield(h,"prev",prev) --- first = h --- -- end of packaging --- if setting.location == v_margin then --- -- okay --- else --- if lines == 0 then -- safeguard, not too precise --- lines = ceil((height+voffset) / baseline) --- end --- -- We cannot set parshape yet ... when we can I'll add a slope --- -- option (positive and negative, in emwidth). --- local hangafter = - lines --- local hangindent = width + distance + parindent --- if trace_initials then --- report_initials("setting hangafter to %i and hangindent to %p",hangafter,hangindent) --- end --- tex.hangafter = hangafter --- tex.hangindent = hangindent --- if parindent ~= 0 then --- insert_after(first,first,new_kern(-parindent)) --- end --- end --- done = true --- end --- end --- return head, done --- end - actions[v_default] = function(head,setting) local done = false local id = getid(head) - if (id == localpar_code) or (id == whatsit_code and getsubtype(head) == localpar_code) then + if id == localpar_code then -- begin of par local first = getnext(head) local indent = false @@ -352,7 +261,7 @@ actions[v_default] = function(head,setting) -- g.subtype = 0 -- nodes.handlers.characters(g) -- nodes.handlers.protectglyphs(g) --- setfield(current,"char",g.char) +-- setchar(current,g.char) -- nodes.free(g) -- can be a helper @@ -377,8 +286,8 @@ actions[v_default] = function(head,setting) local prev = getprev(first) local next = getnext(last) -- - setfield(first,"prev",nil) - setfield(last,"next",nil) + setprev(first) + setnext(last) local dropper = hpack_nodes(first) local width = getfield(dropper,"width") local height = getfield(dropper,"height") @@ -387,12 +296,8 @@ actions[v_default] = function(head,setting) setfield(dropper,"height",0) setfield(dropper,"depth",0) -- - setfield(prev,"next",dropper) - if next then - setfield(next,"prev",dropper) - end - setfield(dropper,"next",next) - setfield(dropper,"prev",prev) + setlink(prev,dropper) + setlink(dropper,next) -- if next then local current = next |