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author | Karl Berry <karl@freefriends.org> | 2021-03-06 21:58:15 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2021-03-06 21:58:15 +0000 |
commit | 974640d66e61e81cb197ad96fdff7b08343e4c5a (patch) | |
tree | 2e1f75f32f312b7f24ba82b4590ae230bcd6f399 /Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex | |
parent | b4fa72e61230aca75f7f6fbf988821f71edfb6b2 (diff) |
context
git-svn-id: svn://tug.org/texlive/trunk@58167 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex')
-rw-r--r-- | Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex b/Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex index b81e1dbdae5..537961661f5 100644 --- a/Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex +++ b/Master/texmf-dist/doc/context/sources/general/manuals/luatex/luatex-enhancements.tex @@ -1266,6 +1266,29 @@ related primitives. \stopsubsection +\startsubsection[title={\prm {glyphdimensionsmode}}] + +Already in the early days of \LUATEX\ the decision was made to calculate the +effective height and depth of glyphs in a way that reflected the applied vertical +offset. The height got that offset added, the depth only when the offset was +larger than zero. We can now control this in more detail with this mode +parameter. An offset is added to the height and|/|or subtracted from the depth. +The effective values are never negative. The zero mode is the default. + +\starttabulate[|l|pl|] +\DB value \BC effect \NC\NR +\TB +\NC \type {0} \NC the old behaviour: add the offset to the height and only subtract + the offset only from the depth when it is positive \NC \NR +\NC \type {1} \NC add the offset to the height and subtract it from the depth \NC \NR +\NC \type {2} \NC add the offset to the height and subtract it from the depth but + keep the maxima of the current and previous results \NC \NR +\NC \type {3} \NC use the height and depth of the glyph, so no offset is applied \NC \NR +\LL +\stoptabulate + +\stopsubsection + \stopsection \startsection[title={Control and debugging}] |