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-rw-r--r--tex/context/base/page-mul.tex201
1 files changed, 76 insertions, 125 deletions
diff --git a/tex/context/base/page-mul.tex b/tex/context/base/page-mul.tex
index bf4386b4e..edee9cee1 100644
--- a/tex/context/base/page-mul.tex
+++ b/tex/context/base/page-mul.tex
@@ -355,29 +355,12 @@
%D dimensions are influenced by bodyfont switches inside
%D multi||column mode.
-% \def\setcolumnvsize
-% {%\global\vsize\columntextheight
-% \global\vsize-\columntextoffset
-% \global\multiply\vsize \plustwo
-% \global\advance\vsize \columntextheight
-% \ifdim\precolumnboxheight>\zeropoint
-% \global\advance\vsize -\precolumnboxheight
-% \fi
-% %\getinsertionheights\to\dimen0\\%
-% %\global\advance\vsize -\dimen0
-% \settotalinsertionheight
-% \global\advance\vsize -\totalinsertionheight
-% %%%\ifgridsnapping % evt altijd, nog testen, testing now, see columned tocs
-% \getnoflines\vsize
-% \vsize\noflines\openlineheight
-% \advance\vsize .5\openlineheight % collect enough data
-% %%%\fi
-% \global\vsize\nofcolumns\vsize
-% \global\pagegoal\vsize} % let's do it only here
-
\newdimen\mcscratchdimen
\newcount\nofcolumnlines
+\chardef\multicolumnlinemethod\zerocount % 0: overshoot (old default), 1: tight
+% \chardef\multicolumnlinemethod\plusone
+
\def\getmulticolumnlines
{\mcscratchdimen-\columntextoffset
\multiply\mcscratchdimen \plustwo
@@ -387,38 +370,22 @@
\fi
\settotalinsertionheight
\advance\mcscratchdimen -\totalinsertionheight
- \getnoflines\mcscratchdimen
+ \ifcase\multicolumnlinemethod \getnoflines\mcscratchdimen
+ \or \getrawnoflines\mcscratchdimen
+ \else \getrawnoflines\mcscratchdimen
+ \fi
% added 30/7/2004
\ifnum\layoutlines>\zerocount \ifnum\noflines>\layoutlines
\noflines\layoutlines
\fi \fi
\nofcolumnlines\noflines}
-% probaby better, test first, don't replace yet
-%
-% \def\getmulticolumnlines
-% {\mcscratchdimen-\columntextoffset
-% \multiply\mcscratchdimen \plustwo
-% % \advance\mcscratchdimen \columntextheight
-% \ifdim\precolumnboxheight>\zeropoint
-% \advance\mcscratchdimen -\precolumnboxheight
-% \fi
-% \settotalinsertionheight
-% \advance\mcscratchdimen -\totalinsertionheight
-% \getnoflines\mcscratchdimen
-% \ifnum\layoutlines>\zerocount
-% \noflines-\noflines
-% \advance\noflines\layoutlines
-% \ifnum\noflines<\zerocount
-% \noflines\zerocount
-% \fi
-% \fi
-% \nofcolumnlines\noflines}
+\def\multicolumnovershootratio{.5} % {\ifgridsnapping0\else.5\fi}
\def\setcolumnvsize
{\getmulticolumnlines
\mcscratchdimen\nofcolumnlines\openlineheight
- \advance\mcscratchdimen .5\openlineheight % collect enough data
+ \advance\mcscratchdimen \multicolumnovershootratio\openlineheight % collect enough data
\global\vsize\nofcolumns\mcscratchdimen
\global\pagegoal\vsize} % let's do it only here
@@ -521,47 +488,25 @@
%D e.g. when there is no text given between \type{\begin..}
%D and \type{\end..}. The \type{\par} is needed!
-% \def\endmulticolumns
-% {%\par
-% \vskip\lineheight\vskip-\lineheight % take footnotes into account
-% \dontshowcomposition
-% \doflushcolumnfloat % added recently
-% %\doflushcolumnfloats % no, since it results in wrong top floats
-% \flushnotes % before start of columns
-% \par
-% \ifbalancecolumns
-% \global\output{\continuousmulticolumnsout}%
-% \goodbreak
-% \global\output{\balancedmulticolumnsout}%
-% \else
-% \goodbreak
-% \fi
-% \eject % the prevdepth is important, try e.g. toclist in
-% \prevdepth\zeropoint % columns before some noncolumned text text
-% \global\output\singlecolumnout
-% \global\output{\the\mainoutput}% % % % % todo
-% \ifvoid\precolumnbox\else
-% \unvbox\precolumnbox
-% \fi
-% \global\precolumnboxheight\zeropoint
-% \endgroup % here
-% \nofcolumns\plusone
-% \setvsize % the outer one!
-% \checkendcolumnfootnotes
-% \dosomebreak\allowbreak
-% \restoresavedfloats}
+\chardef\multicolumnendsyncmethod\plusone % 1: old sync 2: new sync (cont-loc/project)
\def\endmulticolumns
{%\par
- \vskip\lineheight\vskip-\lineheight % take footnotes into account
+ \ifnum\multicolumnendsyncmethod=\plustwo
+ \synchronizeoutput
+ \else
+ \vskip\lineheight\vskip-\lineheight % take footnotes into account
+ \fi
\dontshowcomposition
\doflushcolumnfloat % added recently
%\doflushcolumnfloats % no, since it results in wrong top floats
\flushnotes % before start of columns
\par
\ifbalancecolumns
- \global\output{\continuousmulticolumnsout}%
- \goodbreak
+ \ifnum\multicolumnendsyncmethod=\plusone
+ \global\output{\continuousmulticolumnsout}%
+ \goodbreak
+ \fi
\global\output{\balancedmulticolumnsout}%
\else
\goodbreak
@@ -635,10 +580,30 @@
\edef\maxcolumndepth{\the\dp\currentcolumnbox}%
\fi}}
-\chardef\columnedtopflushmethod\plusone
+
+\chardef\multicolumntopflushmethod\plusone % 0: no correction, 1: correction when topstuff, 2: correction, 3: correction++
+\chardef\multicolumntopalignmethod\plustwo % 0: nothing, 1: force grid, 2: follow grid
+
+\def\flushprecolumnboxnogrid
+ {\unvbox\precolumnbox}
+
+\def\flushprecolumnboxongrid
+ {\scratchdimen\savedpagetotal
+ \advance\scratchdimen -\ht\precolumnbox
+ \advance\scratchdimen -\dp\precolumnbox
+ \advance\scratchdimen -\topskip
+ \box\precolumnbox
+ \kern\scratchdimen}
+
+\newconditional\someprecolumncontent
\def\flushcolumnedpage#1%
{\bgroup
+ \ifvoid\precolumnbox
+ \setfalse\someprecolumncontent % will be set elsewhere
+ \else
+ \settrue\someprecolumncontent
+ \fi
\forgetall
\setmulticolumnsout
\showcomposition
@@ -686,41 +651,54 @@
\hskip-\columntextwidth
\restoretextcolor{\box\scratchbox}}%
\postprocesscolumnpagebox % new, acts upon \box\columnpagebox
- \ifvoid\precolumnbox
- \else
+ \ifconditional\someprecolumncontent
+ \settrue\someprecolumncontent
% next some incredible crappy code
- \ifgridsnapping
- % somehow this junk fails in pascal
- \scratchdimen\savedpagetotal
- \advance\scratchdimen -\ht\precolumnbox
- \advance\scratchdimen -\dp\precolumnbox
- \advance\scratchdimen -\topskip
- \box\precolumnbox
- \kern\scratchdimen
+ \ifcase\multicolumntopalignmethod
+ \flushprecolumnboxnogrid % not on grid
+ \or
+ \flushprecolumnboxongrid % force on grid
+ \else\ifgridsnapping % somehow this junk fails in pascal
+ \flushprecolumnboxongrid % obey grid settings, force on grid
\else
- \unvbox\precolumnbox
- \fi
+ \flushprecolumnboxnogrid % ignore grid settings, not on grid
+ \fi \fi
\fi
\global\precolumnboxheight\zeropoint
\setvsize
- \dosomebreak\nobreak
- \ifgridsnapping \else
- \ifcase\columnedtopflushmethod
+ \dosomebreak\nobreak % hm, only needed when topstuff
+ \ifgridsnapping
+ \else
+ \ifcase\multicolumntopflushmethod
% sometimes method 1 goes wrong, so we need a way out; best sort this out
% when we run into it again
\or
% \input tufte \startcolumns \showbaselines \input tufte \stopcolumns \input tufte
- \scratchdimen\topskip
- \advance\scratchdimen -\openstrutheight
+ \ifconditional\someprecolumncontent
+% \scratchdimen\topskip
+% \advance\scratchdimen -\openstrutheight
+% \nointerlineskip
+% \vskip-\scratchdimen
+ \nointerlineskip
+ \vskip\dimexpr\openstrutheight-\topskip\relax
+ \fi
+ \or
+% \scratchdimen\topskip
+% \advance\scratchdimen -\openstrutheight
+% \nointerlineskip
+% \vskip-\scratchdimen
\nointerlineskip
- \vskip-\scratchdimen
+ \vskip\dimexpr\openstrutheight-\topskip\relax
\or
% untested but maybe handy
- \scratchdimen\topskip
- \advance\scratchdimen -\openstrutheight
+% \scratchdimen\topskip
+% \advance\scratchdimen -\openstrutheight
+% \nointerlineskip
+% \vskip-\scratchdimen
+% \vskip-\lineheight
+% \vbox{\strut}%
\nointerlineskip
- \vskip-\scratchdimen
- \vskip-\lineheight
+ \vskip\dimexpr\openstrutheight-\topskip-\lineheight\relax
\vbox{\strut}%
\fi
\fi
@@ -921,34 +899,6 @@
\fi
\fi}
-% \def\overlaycolumnfootnotes % VERVANGEN !!!
-% {\relax
-% \ifcase\clevernotes\else
-% \checknotepresence
-% \ifnotespresent
-% % the note box has the depth of the notefont
-% % because a column (i.e. first column has no depth,
-% % we need to anchor top down)
-% \bgroup
-% \scratchdimen\ht\firstcolumnbox
-% \advance\scratchdimen -\openstrutdepth % \strutdp
-% \getnoflines\scratchdimen
-% \advance\noflines -2
-% \scratchdimen\noflines\lineheight
-% \advance\scratchdimen \topskip
-% \setbox0\hbox
-% {\lower\scratchdimen\vbox{\placenoteinserts}}%
-% \ht0=\openstrutheight % \strutht
-% \dp0=\openstrutdepth % \strutdp
-% \scratchdimen\ht\lastcolumnbox
-% \global\setbox\lastcolumnbox\vbox to \scratchdimen
-% {\box\lastcolumnbox
-% \vskip-\scratchdimen
-% \restoretextcolor{\box0}}%
-% \egroup
-% \fi
-% \fi}
-
\def\overlaycolumnfootnotes
{\relax
\ifcase\clevernotes
@@ -1214,6 +1164,7 @@
\egroup
\fi
\else
+ % a one liner is not properly handled here, so best rewrite the text then
\showmessage\m!columns{10}\empty
\global\setbox\firstcolumnbox\vbox{\unvbox0}%
\fi
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