diff options
Diffstat (limited to 'tex/context/base/mkxl/math-spa.lmt')
| -rw-r--r-- | tex/context/base/mkxl/math-spa.lmt | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/tex/context/base/mkxl/math-spa.lmt b/tex/context/base/mkxl/math-spa.lmt index d2927ff58..a575b1714 100644 --- a/tex/context/base/mkxl/math-spa.lmt +++ b/tex/context/base/mkxl/math-spa.lmt @@ -41,6 +41,7 @@ local getnormalizedline = node.direct.getnormalizedline local getbox = nuts.getbox local setoffsets = nuts.setoffsets local addxoffset = nuts.addxoffset +local setattrlist = nuts.setattrlist local nextglue = nuts.traversers.glue local nextlist = nuts.traversers.list @@ -48,7 +49,9 @@ local nextboundary = nuts.traversers.boundary local nextnode = nuts.traversers.node local insertafter = nuts.insertafter +local insertbefore = nuts.insertbefore local newkern = nuts.pool.kern +local newstrutrule = nuts.pool.strutrule local texsetdimen = tex.setdimen local texgetdimen = tex.getdimen @@ -68,6 +71,10 @@ local d_strc_math_first_height = texisdimen("d_strc_math_first_height") local d_strc_math_last_depth = texisdimen("d_strc_math_last_depth") local d_strc_math_indent = texisdimen("d_strc_math_indent") +local report = logs.reporter("mathalign") + +local trace = false trackers.register("mathalign",function(v) trace = v end ) + local function moveon(s) for n, id, subtype in nextnode, getnext(s) do s = n @@ -138,15 +145,20 @@ stages[1] = function(specification,stage) p = getprev(p) end end - -- we use a hangindent so we need to treat the first one - local f = found[1] - local delta = f[2] - max - if delta ~= 0 then - insertafter(head,moveon(head),newkern(-delta)) - end - for i=2,#found do + for i=1,#found do local f = found[i] - insertafter(head,moveon(f[3]),newkern(-f[2])) -- check head + local w = f[2] + local d = i == 1 and (max-w) or -w + local k = newkern(d) + local r = newstrutrule(0,2*65536,2*65536) + local s = moveon(f[3]) + if trace then + report("row %i, width %p, delta %p",i,w,d) + end + setattrlist(r,head) + setattrlist(k,head) + insertbefore(head,s,r) + insertafter(head,r,k) end end texsetdimen("global",d_strc_math_indent,max) |