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-%% pause.sty 18 Jun 2002
-%%-----------------------------------------------------------
-%% History:
-%% The initial version was created 11 Jun 1999
-%% Updated to allow options 10 Mar 2000
-%% Restructured after tests 03 Apr 2000
-%% Added procesing for random builds 07 May 2000
-%% Supply test for new enough pdftex 09 May 2000
-%% No need for pdftex 14 any more 31 May 2000
-%% Added commands for highligthing etc. 12 Jun 2000
-%% Added options ignore, nomarkers and dvipdfm
-%% runs with vlatex and dvipdfm 10 Nov 2001
-%% Update comment section 13 Jun 2002
-%% Make catcodes safe for pdfliteral 18 Jun 2002
-%%
-%% Because we need a color definition this can be used
-%% primarily with LaTeX. Thus we can also rely on \@ifnextchar
-%% and LaTeX option processing.
-%%
-%% insert small colored chunks to mark spots in the pdf file,
-%% where a break should be made during display.
-%% This method needs postprocessing by another program.
-%% But one can preview the formatted text, where stops are indicated
-%% as small colored chunks. These will vanish during postprocessing.
-%%
-%% Take care: because we have to insert pdf comments starting with
-%% the letter '%' the catcode of '%' will be changed temporarily.
-
-%% must define all optional variants to support creating a file
-%% without pdf elements
-
-
-%% Options
-\newif\ifpause@ignore \pause@ignorefalse
-\newif\ifpause@nomarkers \pause@nomarkersfalse
-\newif\ifpause@dvipdfm \pause@dvipdfmfalse
-
-\DeclareOption{ignore}{\pause@ignoretrue}
-\DeclareOption{nomarkers}{\pause@nomarkerstrue}
-\DeclareOption{dvipdfm}{\pause@dvipdfmtrue}
-
-\ProcessOptions
-
-
-%% warning if ignore and nomarkers
-\ifpause@ignore
- \ifpause@nomarkers
- \message{Warning, options ignore and nomarkers used together}
- \fi
-\fi
-
-%% We need to make sure that , and : are not active characters while
-%% we read these macro definitions.
-%% Save their current catcode settings now and restore them at the end
-\def\pppp@x#1{\catcode`\noexpand#1=\the\catcode`#1\relax}%
-\xdef\pppp@restoreCatcodes{\relax
- \pppp@x\:\relax
- \pppp@x\,\relax
-}
-\catcode`\,=12\relax
-\catcode`\:=12\relax
-
-\def\pauseDissolve{\pause[trans='Dissolve']}
-\def\pauseReplace{\pause[trans='Replace']}
-\def\pauseHBlinds{\pause[trans='Blinds,H']}
-\def\pauseVBlinds{\pause[trans='Blinds,V']}
-\def\pauseHOSplit{\pause[trans='Split,H,O']}
-\def\pauseHISplit{\pause[trans='Split,H,I']}
-\def\pauseVOSplit{\pause[trans='Split,V,O']}
-\def\pauseVISplit{\pause[trans='Split,V,I']}
-\def\pauseOBox{\pause[trans='Box,O']}
-\def\pauseIBox{\pause[trans='Box,I']}
-\def\pauseWipe#1{\pause[trans='Wipe,#1']}
-\def\pauseGlitter#1{\pause[trans='Glitter,#1']}
-\def\pause{\@ifnextchar [{\pppp@pause}{\pppp@pause[]}}
-
-
-
-%% dvipdfm support
-\ifpause@dvipdfm
- {\catcode`\^^M=12
- \gdef\pdfliteral#1{\special{pdf: content
- #1
- }}}
-
- \message{Using color settings for dvipdfm}
-
- \RequirePackage[dvipdfm]{color}
-
- %% This is for the support of the dvipdfm color philosophy
- \def\pppp@gettail #1 #2:{#2}
- \def\pppp@gethead #1 #2:{#1}
- \def\pppp@tail #1{\expandafter\pppp@gettail #1:}
- \def\pppp@tailtail #1{\expandafter\pppp@gettail\pppp@gettail #1::}
- \def\pppp@head #1{\expandafter\pppp@gethead #1:}
- \def\pppp@removebrackets[#1]{#1}
-
-
- % maps dvipdfm color arguments to pdf color commands
- \def\pppp@dvipdfmmap #1{\expandafter\pppp@grayorother#1:}
- \def\pppp@dvipdfmmapper#1{\csname dvipdfmmapel@#1\endcsname}
- \def\pppp@dvipdfmmapvalue#1{\expandafter\def\csname dvipdfmmapel@#1\endcsname}
-
- \def\pppp@grayorother#1#2:{\pppp@dvipdfmmapper{#1}[#1#2]}
- \def\pppp@rgborcmyk #1 #2 #3 #4 #5 #6:{\pppp@dvipdfmmapper{#6}[#2 #3 #4 #5]}
-
- % for the latest dvipdfm.def-File
- \pppp@dvipdfmmapvalue{c}[#1]{\pppp@tail{#1} k \pppp@tail{#1} K}
- \pppp@dvipdfmmapvalue{r}[#1]{\pppp@tail{#1} rg \pppp@tail{#1} RG}
- \pppp@dvipdfmmapvalue{g}[#1]{\pppp@tail{#1} g \pppp@tail{#1} G}
-
- % for dvipdfm.def with bg-error
- \pppp@dvipdfmmapvalue{b}[#1]{\pppp@tail{#1} g \pppp@tail{#1} G}
-
- % support of the older format ([...],...)
- \pppp@dvipdfmmapvalue{0}[#1]{#1 g #1 G}
- \pppp@dvipdfmmapvalue{1}[#1]{#1 g #1 G}
- \pppp@dvipdfmmapvalue{[}[#1]{\expandafter\pppp@removebrackets[\expandafter\pppp@rgborcmyk #1 :}
- \pppp@dvipdfmmapvalue{}[#1]{#1rg #1RG}
- \pppp@dvipdfmmapvalue{ }[#1]{#1 k #1 K}
-
- \def\pppp@colortostring #1{\expandafter\pppp@dvipdfmmap\csname\string\color@#1\endcsname}
-\else
- \RequirePackage{color}
- \def\pppp@colortostring #1{\csname\string\color@#1\endcsname}
-\fi
-
-
-\definecolor{pp4red}{rgb}{0.9,0.5,0}
-
-%% We need to make sure that our argument parameters do not contain
-%% active characters when we are called. This means we better set the
-%% catcodes for some common delimiters in our arguments. Let's hope
-%% that nobody is going to change the letters and digits, too.
-\gdef\pppp@catcodes{%
- \catcode`\+12\relax
- \catcode`\-12\relax
- \catcode`\:12\relax
- \catcode`\=12\relax
- }
-%% now we need a section where % can be written to pdf files.
-%% thus make ! a comment character
-{\catcode`\%=11\catcode`\!=14
-\gdef\pppp@marker#1{!
- \ifpause@ignore
- \relax
- \else
- \pdfliteral{%pause}!
- \ifpause@nomarkers
- \relax
- \else
- \color{pp4red}\vrule width 2truemm height 5truemm\hss ! the marker
- \fi
- \pdfliteral{%esuap #1}!
- \fi}
- \gdef\pppp@pause[#1]{!
- \ifvmode
- \vbox to 0pt{\vss\hsize0pt\noindent\hbox to 0pt{\pppp@marker{#1}}}\else!hmode or mmode
- \null\hbox to 0pt{\pppp@marker{#1}}\null!
- !\null\hbox to 0pt{\pppp@marker{#1}}\null
- \fi}
-
-
- \ifpause@ignore
- !! define dummies, if \pause should be ignored
- \gdef\pauselevel#1{\relax}!
- \gdef\pausecolors#1#2#3{}!
- \gdef\pausecolorreset{\relax}
- \gdef\pausebuild{\relax}
- \gdef\pausehighlight{\relax}
- \else
- \gdef\pauselevel{\bgroup\pppp@catcodes\pppp@pauselevel}!
- \gdef\pppp@pauselevel#1{\pdfliteral{%pauselevel #1}\egroup}!
- \gdef\pausecolors#1#2#3{!
- \pdfliteral{%pausecolor \pppp@colortostring{#1}\space \pppp@colortostring{#2}\space \pppp@colortostring{#3}}}!
- \gdef\pausecolorreset{!
- \pdfliteral{%pausecolor reset}}!
- \gdef\pausebuild{!
- \pdfliteral{%pausecolor appear}}!
- \gdef\pausehighlight{!
- \pdfliteral{%pausecolor highlight}}!
- \fi
-}
-
-\pppp@restoreCatcodes