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Diffstat (limited to 'doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex')
| -rw-r--r-- | doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex b/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex index d5105fc8c..dd6c2f2d4 100644 --- a/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex +++ b/doc/context/sources/general/manuals/lowlevel/lowlevel-boxes.tex @@ -689,6 +689,38 @@ test\quad \ruledhbox{\getbuffer} \stoplinecorrection +Where a \type {\vtop} has the baseline at the top, a \type {\vbox} has it at the +bottom. In \LUAMETATEX\ we also have a \type {\dbox}, which is a \type {\vbox} with +that behaves like a \type {\vtop} when it's appended to a vertical list: the height of +the first box or rule determines the (base)line correction that gets applied. The following +example demonstrates this: + +\startlinecorrection +\startcombination [nx=3,ny=1,location=top] + {\vbox \bgroup \hsize .3\textwidth + \small\small \setupalign[tolerant,stretch] \dontcomplain + xxxxxxxxxxxxxxxx\par + \ruledvbox{\samplefile{tufte}}\par + xxxxxxxxxxxxxxxx\par + \egroup} {\type {\vbox}} + {\vbox \bgroup \hsize .3\textwidth + \small\small \setupalign[tolerant,stretch] \dontcomplain + xxxxxxxxxxxxxxxx\par + \ruledvtop{\samplefile{tufte}}\par + xxxxxxxxxxxxxxxx\par + \egroup} {\type {\vtop}} + {\vbox \bgroup \hsize .3\textwidth + \small\small \setupalign[tolerant,stretch] \dontcomplain + xxxxxxxxxxxxxxxx\par + \ruleddbox{\samplefile{tufte} }\par + xxxxxxxxxxxxxxxx\par + \egroup} {\type {\dbox}} +\stopcombination +\stoplinecorrection + +The \type {d} stands for \quote {dual} because we (sort of) have two baselines. The +regular height and depth are those of a \type {\vbox}. + \stopsectionlevel \stopdocument |