/usr/share/texmf-texlive/tex/generic/genmisc/backgrnd.tex is in texlive-generic-recommended 2009-15.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 | %%% backgrnd.sty = background.sty
%%% Experimental version 24 march 1996
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%
%%% This macro file aims at implementing marking of text,
%%% either by a grey background or by a changeebar
%%% using TeX's own resources only,
%%% (i.e., without resorting to any pstricks).
%%% Grey background uses a shade font defined using MetaFont
%%% The macros seem to work satisfactory under plain TeX,
%%% however, I have also tried (rudimentarily) to integrate them with
%%% LaTeX, too. It seems to work with (simple) LaTeX 2.09, at least.
%%%
%%% commands :
%%% \RuleOn and \RuleOff : changebar
%%% \RuleON : backs up to mark current line, too
%%% \RuleStyle { ( dimension ) % width of rule
%%% % rule offset on pages
%%% [ # dimension | % with even pagenumbers
%%% # dimension ] } % with odd pagenumbers
%%% % # is either < : left margin
%%% % or > : right margin
%%% e.g.: default values are set by
%%% \RuleStyle { (2pt)[<18pt|>18pt] }
%%%
%%%
%%% \ShadeON ( backs up to mark current line, too ) and
%%% \ShadeOn and \ShadeOff : grey background, requires shade.sty
%%% therefore, by default,
\let\ifUseGrey\iffalse % grey background will not be installed
%%% - and will be replaced by rules
%%% if grey background is required then
%%% remove comment signs %%% from next line :
%%% \let\ifUseGrey\iftrue
%%%
%%% (At present) it is not possible to use both commands
%%% in the same document !
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% Peter Schmitt %%%
%%% Institut f\"ur Mathematik, Universit\"at Wien %%%
%%% Strudlhofgasse 4, A-1090 Wien, Austria %%%
%%% email: schmitt@awirap.bitnet %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\catcode`\: 11 % make internal macros private
\countdef\int: 255 % scratch registers
\dimendef\dim: 0
\skipdef\skip: 0
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% commands and options %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def \RuleOn {\bg:ini \bg:rule
\RuleStyle { (2pt)[<18pt|>18pt] }
\bg:commands \RuleOn \RuleON \RuleOff
\RuleOn
}
\def \RuleStyle #1{\set:hsize #1(\bg:hsize)\\%
\set:offsets #1[*|*]\iftrue]\iffalse\\%
}
\def \bg:rule {\leaders\vrule width\bg:hsize\vskip}
\def \bg:empty {\vskip}
\let \bg:offset \relax
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% interface tools %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%
\def\bg:commands #1#2#3{\def #1{\bg:option {\vbox{}\pos:on}}
\def #2{\bg:option {\nobreak\vskip-\baselineskip
\vbox{}\pos:on
\nobreak\vskip\baselineskip }
}
\def #3{\bg:option {\vbox{}\pos:off}}
}
\def \bg:ini {\output{\bg:output} % should be followed by desired \bg:style
\zero:pos
\global\let \bg:skip \bg:empty
\let \bg:style
}
\def\bg:option #1{\ifvmode #1\else \vadjust{#1}\fi }
\def \set:hsize #1(#2)#3\\{\edef\bg:hsize{#2}}
\def \set:offsets #1[#2#3|#4#5]#6]#7#8\\{#7
\def\bg:shift{}
\set:offset #2#3
\set:offset #4#5
\expandafter \set:shifts \bg:shift
\fi }
\def\set:offset #1#2 {\setbox0\hbox{\dim: #2\bg:offset\xdef\bg:offset{\the\dim:}}
\dim:\bg:offset
\expandafter\expandafter\expandafter
\set:shift \csname bg:#1\endcsname
}
\def\set:shift #1#2{\dim: \bg:offset \advance\dim: #2%
\edef\bg:shift {\bg:shift {#1\the\dim:}}
}
\expandafter\def \csname bg:<\endcsname {\moveleft \bg:hsize}
\expandafter\def \csname bg:>\endcsname {\moveright \hsize}
\def \set:shifts #1#2{\def\bg:shift{\ifodd\pageno #2\else #1\fi}}
%%% not used :
\def\bg:err #1{\errmessage {%
Warning ! Background mode \noexpand#1 already active ! }
}
%%% saving position without eject yields not always correct result
%%% \def\bg:on {\switch:to \bg:style } \def\bg:off {\switch:to \bg:empty }
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% grey background %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ifUseGrey
\def\ShadeOn {\bg:ini \bg:grey
\let\bg:shift\relax
\let\bg:hsize\hsize
\setbox\grey:line
\vbox{\shade{\line:{\vphantom{\grey:\char0}\hfil}}}
\bg:commands \ShadeOn \ShadeON \ShadeOff
\ShadeOn
}
\csname newbox\endcsname\grey:line % allow \newbox in conditional text
\def\bg:grey {\leaders\copy\grey:line\vskip}
\let\line:\line
\input shade
\else
\def\ShadeOn{\RuleOn} \def\ShadeOff{\RuleOff} \def\ShadeON{\RuleON}
\fi
%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% output routine %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%
\newbox \bg:page
\newdimen \v:size
\newskip \v:pos
\newcount \true:penalty
\chardef \the:page 255
\def\option: #1{\advance\int: -1
\edef#1{\penalty\the\int: }
\expandafter\def\csname\the\int:\endcsname
} \int: -12345
\def\bg:output{\expandafter\ifx\csname\the\outputpenalty\endcsname\relax
\global\true:penalty\outputpenalty
\expandafter\bg:pagecontents
\else \expandafter\expandafter
\csname\the\outputpenalty\endcsname
\fi }
\option: \pos:on {\bg:switch \bg:style }
\option: \pos:off {\bg:switch \bg:empty }
\option: \bg:top {\save:pos \add:bg\bg:empty\v:skip{}
\repeat:page \unvbox\the:page }
\option: \bg:bot {\save:pos \repeat:page \unvbox\the:page }
\option: \fg:end {\save:pos \add:bg\bg:empty{}\v:skip \bg:makepage }
\def \bg:switch #1{\setbox\the:page
\vbox{\unvbox\the:page \setbox0\lastbox }
\ifdim \pagetotal=\topskip
\global\let \bg:skip #1
\unvbox\the:page
\else \switch:to #1
\repeat:page\repeat:inserts \unvbox\the:page
\fi
}
\def\switch:to #1{\save:pos
\add:bg \bg:skip{}\v:skip
\global\let \bg:skip #1}
\def\bg:pagecontents {\switch:to \bg:skip
\setbox\the:page \vbox
{\vbox{}\bg:top \unvbox\the:page \bg:bot }
\zero:pos \repeat:page
\pagecontents \fg:end
}
\def\bg:makepage {\global\v:size\vsize \advance\v:size \dp\the:page
\def\pagecontents{%
\bg:shift
\vbox to0pt{\vbox to\v:size{\unvbox\bg:page}\vss}
\unvbox\the:page }
\outputpenalty\true:penalty
\plainoutput
\zero:pos \reset:inserts
}
%%%%%%%%%%%%%%%%%
%%% tools %%%
%%%%%%%%%%%%%%%%%
\def\repeat:page {\vbox{}\nobreak\kern-\topskip }
\def\add:bg #1#2#3{\let\bg:vskip #1
\global\setbox\bg:page \vbox{#2\unvbox\bg:page#3}
}
\newdimen \v:fil
\newdimen \v:fill
\newdimen \v:filll
\def\zero:pos {\global \v:pos 0pt
\global \v:fil 0pt
\global \v:fill 0pt
\global \v:filll 0pt
}
\def\save:pos {\skip: -\v:pos % save -last:pos
\global \v:pos \pagetotal
\global\advance \v:pos \pagedepth
\ifnum \pagedepth=0 \advance\v:pos \dp\the:page \fi
\global\advance \v:pos 0ptplus\pagestretch minus\pageshrink
\save:skip
}
\def\save:pos {\skip: -\v:pos % save -last:pos
\global \v:pos \pagetotal
\global\advance \v:pos \pagedepth
\ifnum \pagedepth=0 \advance\v:pos \dp\the:page \fi
\global\advance \v:pos 0ptplus\pagestretch minus\pageshrink
\save:skip
\global\skip\ins:size \vsize
\global\advance\skip\ins:size -\pagegoal
\global\advance\skip\ins:size -\ins:skip
}
\def\save:skip {\advance\skip:\v:pos % v:pos - last:pos
\let\bg:vskip\relax
\edef\v:skip{\bg:vskip\the\skip:}
\fil:skip l \fil:skip ll \fil:skip lll
}
\def\fil:skip #1 {\set:fil {\csname v:fi#1\endcsname}
{\csname pagefi#1stretch\endcsname}
\edef\v:skip{\v:skip \bg:vskip0ptplus\the:pt \dim: fi#1 }
}
\def\set:fil #1#2{\dim: -#1
\advance \dim: #2
\global #1 #2
}
\def\the:pt {\expandafter\PT:\the}
{ \catcode`p 12 \catcode`t 12
\gdef\PT: #1pt{#1} }% \catcode`p 11 \catcode`t 11
%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% insert handling %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcount\ins:
\newinsert\ins:size
\newdimen\ins:skip
\let\do:insert \insert
\def\inserts:{}
\def\insert {\afterassignment\adjust:pos\ins:}
\def\adjust:pos {\csname ins:\the\ins:\endcsname\csname iftrue\endcsname
\add:plus \ins: \add:minus \ins:
\advance\ins:skip\skip\ins:
\let\temp:\relax
\edef\inserts:{\inserts: \temp:{\the\ins:}}
\fi
\global\expandafter\let\csname ins:\the\ins:\endcsname \iffalse
\do:insert\ins: }
\def\repeat:inserts{\def\temp:##1{\do:insert##1{}}\inserts: }
\def\reset:inserts{%
\def\temp: ##1{\global\expandafter\let\csname ins:##1\endcsname \relax }
\inserts: \gdef\inserts:{}\global\ins:skip 0pt }
%%% tools for insert handling %%%
\catcode `L12 \catcode `N12 \catcode `S12 \catcode `U12 \lowercase{
\def\plus: #1LUS #2 #3\\{#2}
\def\Plus: #1{\expandafter\plus:\the#1 LUS 0.0pt \\}
\def\minus: #1NUS #2 #3\\{#2}
\def\Minus: #1{\expandafter\minus:\the#1 NUS 0.0pt \\}
} \catcode `L11 \catcode `N11 \catcode `S11 \catcode `U11
\def\set:int {\afterassignment\set:frac\int: }
\def\set:frac #1{\afterassignment\csname\count0 }
\def\adv:pos #1{\global\advance#1\the\int:.\the\count0 pt }
\def \pt:p {\adv:pos {\v:pos 0ptplus}}
\def \pt:m {\adv:pos {\v:pos 0ptminus}}
\def \fil:p {\adv:pos \v:fil }
\def \fill:p {\adv:pos \v:fill }
\def\filll:p {\adv:pos \v:filll }
\def\add:plus #1{{\expandafter\set:int \Plus: {\skip#1}:p\endcsname }}
\def\add:minus #1{{\expandafter\set:int \Minus:{\skip#1}:m\endcsname }}
%%%%%%%%%%%%%%%%%%%%%%%%
%%% LaTeX extras %%%
%%%%%%%%%%%%%%%%%%%%%%%%
\catcode`@ 11
\ifx \@outputbox\undefined \endinput \catcode`@12 \catcode`: 12 \fi
\newtoks\latex:output \latex:output \output
\newdimen\v:ht % possibly \textheight could be used
\def\bg:@makecol {\switch:to \bg:skip
\setbox\the:page \vbox
{\vbox{}\bg:top \unvbox\the:page \bg:bot }
\@makecol
\global\v:ht\ht\@outputbox \global\v:size\v:ht
\global\advance\v:size\dp\@outputbox
\zero:pos \outputpenalty\true:penalty
\repeat:page \unvbox\@outputbox \fg:end
}
\def\bg:@makepage {\setbox\@outputbox \vbox to \v:ht {%
\bg:shift
\vbox to0pt{\vbox to\v:size{\unvbox\bg:page}\vss}
\unvbox\the:page }
\outputpenalty\true:penalty
\let\@makecol\relax \the\latex:output
\zero:pos \reset:inserts
}
\let \bg:makepage \bg:@makepage
\let \bg:pagecontents \bg:@makecol
\def \line: {\hbox to\textwidth}
\let \pageno \c@page
\catcode`@ 12 \catcode`: 12
\endinput %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% end : background.sty [ 0.3 ] %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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