ucwmac.tex

   1 % The UCW Macro Collection (a successor of mjmac.tex)
   2 % Written by Martin Mares <mj@ucw.cz> in 2010 and placed into public domain
   3 % -------------------------------------------------------------------------
   4
   5 %%% Prolog %%%
   6
   7 % We'll use internal macros of plain TeX
   8 \catcode`@=11
   9
  10 %%% PDF output detection %%%
  11
  12 \newif\ifpdf
  13 \pdffalse
  14
  15 \ifx\pdfoutput\undefined
  16 \else\ifnum\pdfoutput>0
  17         \pdftrue
  18 \fi\fi
  19
  20 %%% Page size and margins %%%
  21
  22 % If you modify these registers, call \setuppage afterwards
  23 \newdimen\pagewidth
  24 \newdimen\pageheight
  25 \newdimen\leftmargin
  26 \newdimen\rightmargin
  27 \newdimen\topmargin
  28 \newdimen\bottommargin
  29 \newdimen\evenpageshift
  30
  31 \def\setuppage{%
  32         \hsize=\pagewidth
  33         \advance\hsize by -\leftmargin
  34         \advance\hsize by -\rightmargin
  35         \vsize=\pageheight
  36         \advance\vsize by -\topmargin
  37         \advance\vsize by -\bottommargin
  38         \hoffset=\leftmargin
  39         \advance\hoffset by -1truein
  40         \voffset=\topmargin
  41         \advance\voffset by -1truein
  42         \ifpdf
  43                 \pdfpagewidth=\pagewidth
  44                 \pdfpageheight=\pageheight
  45         \fi
  46 }
  47
  48 % Set multiple margins to the same value
  49 \def\sethmargins#1{\leftmargin=#1\relax\rightmargin=#1\relax\evenpageshift=0pt\relax}
  50 \def\setvmargins#1{\topmargin=#1\relax\bottommargin=#1\relax}
  51 \def\setmargins#1{\sethmargins{#1}\setvmargins{#1}}
  52
  53 % Define inner/outer margin instead of left/right
  54 \def\setinneroutermargin#1#2{\sethmargins{#1}{#2}\evenpageshift=\rightmargin\advance\evenpageshift by -\leftmargin}
  55
  56 % Use a predefined paper format, calls \setuppage automagically
  57 \def\setpaper#1{%
  58         \expandafter\let\expandafter\currentpaper\csname paper-#1\endcsname
  59         \ifx\currentpaper\relax
  60                 \errmessage{Undefined paper format #1}
  61         \fi
  62         \currentpaper
  63 }
  64
  65 % Switch to landscape orientation, calls \setuppage automagically
  66 \def\landscape{%
  67         \dimen0=\pageheight
  68         \pageheight=\pagewidth
  69         \pagewidth=\dimen0
  70         \setuppage
  71 }
  72
  73 % Common paper sizes
  74 \def\defpaper#1#2#3{\expandafter\def\csname paper-#1\endcsname{\pagewidth=#2\pageheight=#3\setuppage}}
  75 \defpaper{a3}{297truemm}{420truemm}
  76 \defpaper{a4}{210truemm}{297truemm}
  77 \defpaper{a5}{148truemm}{210truemm}
  78 \defpaper{a6}{105truemm}{148truemm}
  79 \defpaper{letter}{8.5truein}{11truein}
  80 \defpaper{legal}{8.5truein}{14truein}
  81
  82 % Default page parameters
  83 \setmargins{1truein}
  84 \setpaper{a4}
  85
  86 %%% Placing material at specified coordinates %%%
  87
  88 % Set all dimensions of a given box register to zero
  89 \def\smashbox#1{\ht#1=0pt \dp#1=0pt \wd#1=0pt}
  90 \def\smashedhbox#1{{\setbox0=\hbox{#1}\smashbox0\box0}}
  91 \def\smashedvbox#1{{\setbox0=\vbox{#1}\smashbox0\box0}}
  92
  93 % Variants of \llap and \rlap working equally on both sides and/or vertically
  94 \def\hlap#1{\hbox to 0pt{\hss #1\hss}}
  95 \def\vlap#1{\vbox to 0pt{\vss #1\vss}}
  96 \def\clap#1{\vlap{\hlap{#1}}}
  97
  98 % \placeat{right}{down}{hmaterial} places <hmaterial>, so that its
  99 % reference point lies at the given position wrt. the current ref point
 100 \long\def\placeat#1#2#3{\smashedhbox{\hskip #1\lower #2\hbox{#3}}}
 101
 102 % Like \vbox, but with reference point in the upper left corner
 103 \def\vhang#1{\vtop{\hrule height 0pt\relax #1}}
 104
 105 % Like \vhang, but respecting interline skips
 106 \def\vhanglines#1{\vtop{\hbox to 0pt{}#1}}
 107
 108 % Crosshair with reference point in its center
 109 \def\crosshair#1{\clap{\vrule height 0.2pt width #1}\clap{\vrule height #1 width 0.2pt}}
 110
 111 %%% Output routine %%%
 112
 113 \newbox\pageunderlays
 114 \newbox\pageoverlays
 115 \newbox\commonunderlays
 116 \newbox\commonoverlays
 117
 118 % In addition to the normal page contents, you can define page overlays
 119 % and underlays, which are zero-size vboxes positioned absolutely in the
 120 % front / in the back of the normal material. Also, there are global
 121 % versions of both which are not reset after every page.
 122 \def\addlay#1#2{\setbox#1=\vbox{\ifvbox#1\box#1\fi\smashedvbox{#2}}}
 123 \def\pageunderlay{\addlay\pageunderlays}
 124 \def\pageoverlay{\addlay\pageoverlays}
 125 \def\commonunderlay{\addlay\commonoverlays}
 126 \def\commonoverlay{\addlay\commonoverlays}
 127
 128 % Our variation on \plainoutput, which manages inner/outer margins and overlays
 129 \output{\ucwoutput}
 130 \def\ucwoutput{\wigglepage\shipout\vbox{%
 131         \makeheadline
 132         \ifvbox\commonunderlays\copy\commonunderlays\nointerlineskip\fi
 133         \ifvbox\pageunderlays\box\pageunderlays\nointerlineskip\fi
 134         \pagebody
 135         \ifvbox\commonoverlays\vbox to 0pt{\vskip -\vsize\copy\commonoverlays}\fi
 136         \ifvbox\pageoverlays\vbox to 0pt{\vskip -\vsize\box\pageoverlays}\fi
 137         \makefootline
 138 }\advancepageno
 139 \ifnum\outputpenalty>-\@MM \else\dosupereject\fi}
 140
 141 \def\wigglepage{\ifodd\pageno\else\advance\hoffset by \evenpageshift\fi}
 142
 143 %%% Epilog %%%
 144
 145 % Let's hide all internal macros
 146 \catcode`@=12