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%D \module
%D   [      file=simpleslides-s-SideToc,
%D        version=2010.02.09,
%D          title=\CONTEXT\ Style File,
%D       subtitle=Presentation Module --- SideToc style,
%D         author=Aditya Mahajan and Thomas A. Schmitz,
%D           date=\currentdate,
%D      copyright={Aditya Mahajan and Thomas A. Schmitz}]
%C
%C Copyright 2010 Aditya Mahajan and Thomas A. Schmitz
%C This file may be distributed under the GNU General Public License v. 2.0.

%D This file provides the \quotation{SideToc} style for the presentation
%D module. It is loaded at runtime. 

\writestatus{simpleslides}{loading Side Toc style}

\startmodule[simpleslides-s-SideToc]

\unprotect

%D We create different layouts for the title page, horizontal, and vertical
%D slides.

\setuplayout  [simpleslides:layout:vertical]
	      [width=fit,
              leftmargin=3.5cm,
	      rightmargin=0cm,
              leftmargindistance=1cm,
              rightmargindistance=0pt,
              height=fit, 
              header=0cm, 
              footer=0cm, 
              topspace=1cm, 
              backspace=5cm,
%	      cutspace=4cm,
              bottomspace=0cm,
              bottom=0pt,
              location=middle]

\setuplayout  [simpleslides:layout:horizontal]
	      [width=fit,
              leftmargin=3.5cm,
	      rightmargin=0cm,
              leftmargindistance=1cm,
              rightmargindistance=0pt,
              height=fit, 
              header=0.1cm, 
	      headerdistance=1.7cm,
              footer=0cm, 
              topspace=1cm, 
              backspace=5cm,
%	      cutspace=4cm,
              bottomspace=0cm,
              bottom=0pt,
              location=middle]

\setuplayout  [simpleslides:layout:title]
	      [width=fit,
              leftmargin=0cm,
	      rightmargin=0cm,
              height=fit, 
              header=0cm, 
              footer=0cm, 
              topspace=1cm, 
              backspace=1cm,
              bottomspace=0cm,
              bottom=0pt,
              location=middle]

\setupcombinations[distance=0.75cm]

%D The interesting part of this presentation style is the "Topic" list which is
%D typeset in the left margin. It is inspired by something Hans did in
%D s-pre-19. The Difference is that I wanted the Topic to be independent from
%D SlideTitle macro. This way, several slides can be combined into one Topic.

% \definelayer
%   [Topiclayer]
%   [width=2.5cm,
%    height=\paperheight]
% 
% \defineoverlay
%   [simpleslides:background:ornament] 
%   [\setlayer[Topiclayer]{\completelist[MyTopic]}

% \startsetups tlayer
%  \setlayer[Topiclayer]{\completelist[MyTopics]}
%\stopsetups

%D These macros are used for placing figures/pictures:

\define\NormalHeight        {\textheight}
\define\NormalWidth         {.476\textwidth}
\define\PictureFrameHeight  {\textheight}
\define\PictureFrameWidth   {.476\textwidth}

\setuplayer
  [simpleslides:layer:slidetitle]
  [x=5cm]

%D We define our color scheme

\enablemode[\moduleparameter{simpleslides}{color}]

\startmode[dark]
\definecolor [simpleslides:backgroundcolor]   [s=.9]
\definecolor [simpleslides:altcontrastcolor]  [b=.6]
\definecolor [simpleslides:contrastcolor]     [s=.3]
\definecolor [simpleslides:itemize:color]     [simpleslides:altcontrastcolor]

\define[3]\FancyEntry{%
  \doifelse \rawstructurelistfirst \MyMark%
    {\framed[width=3.5cm,
	     height=4ex,
	     align=middle,
	     frame=off,
	     framecolor=red,
	     background=color,
	     backgroundcolor=simpleslides:altcontrastcolor,
 	     foregroundcolor=simpleslides:backgroundcolor]
	    {\switchtobodyfont[13pt]#1}}% fancy layout
    {\framed[width=3.5cm,
	     height=4ex,
	     align=middle,
	     frame=off,
	     framecolor=red,
 	     foregroundcolor=simpleslides:backgroundcolor]
	    {\switchtobodyfont[13pt]#1}}% normal layout
}

\stopmode

\startmode[light]
\definecolor [simpleslides:altcontrastcolor]  [r=1,g=0.5,b=0]
\definecolor [simpleslides:contrastcolor]     [s=0.95]
\definecolor [simpleslides:textcolor]         [s=0]
\definecolor [simpleslides:itemize:color]     [simpleslides:altcontrastcolor]
\define[3]\FancyEntry
 {\doifelse{#1}{\MyMark} %
    {\framed[width=3.5cm,
	     height=4ex,
	     frame=off,
	     align=middle,
 	     foregroundcolor=simpleslides:altcontrastcolor]
	    {\switchtobodyfont[13pt]\bf Y #1}}% fancy layout
    {\framed[width=3.5cm,
	     height=4ex,
	     align=middle,
	     frame=off,
	     framecolor=red,
 	     foregroundcolor=simpleslides:altcontrastcolor]
	    {\switchtobodyfont[13pt] X #1}}% normal layout
}
\stopmode

%D Here are the main macros for defining and typesetting the Topic list:

\definelist[MyTopics][criterium=all]

\def\MyMark{}

\def\Topic%
%{\relax}
  {\dosingleargument\doTopic}

\def\doTopic[#1]{
  \gdef\MyMark{#1}%
  \writetolist[MyTopics][location=none]{#1}{}%
}

\setuplist[MyTopics]
          [pagenumber=no,
           alternative=command,
           command=\FancyEntry]

\setuptexttexts[margin][\vbox{\placelist[MyTopics]}][]

%D We use \METAPOST to draw the background.

\startuseMPgraphic{simpleslides:MP:title}
StartPage ;
save middle ;
path middle ;
fill Page withcolor \MPcolor{simpleslides:contrastcolor} ;
middle = Page enlarged -1.5cm ;
fill middle withcolor \MPcolor{simpleslides:altcontrastcolor} ;
StopPage ;
\stopuseMPgraphic

\startuseMPgraphic{simpleslides:MP:horizontal}
StartPage ;
save a, b, c ;
numeric a, b, c ;

a = 4.5cm ;
b = 0.5cm ;
c = 2.2cm ;

z[1] = ulcorner Page shifted (a,0) ;
z[2] = llcorner Page shifted (a,0) ;
z[3] = ulcorner Page shifted (0,-c) ;
z[4] = urcorner Page shifted (0,-c) ;
z[5] = llcorner Page shifted (0,b) ;
z[6] = lrcorner Page shifted (0,b) ;
z[7] = ulcorner Page shifted (a,-c) ;
z[8] = llcorner Page shifted (a,b) ;

save p ;
path p[] ;
p[1] = ulcorner Page -- z[1] -- z[2] -- llcorner Page -- cycle ;
p[2] = ulcorner Page -- urcorner Page -- z[4] -- z[3] -- cycle ;
p[3] = llcorner Page -- lrcorner Page -- z[6] -- z[5] -- cycle ;
p[4] = ulcorner Page -- z[1] -- z[7] -- z[3] -- cycle ;
p[5] = llcorner Page -- z[5] -- z[8] -- z[2] -- cycle ;

fill Page withcolor \MPcolor{simpleslides:backgroundcolor} ;
fill p[1] withcolor \MPcolor{simpleslides:contrastcolor} ;
fill p[2] withcolor \MPcolor{simpleslides:contrastcolor} ;
fill p[3] withcolor \MPcolor{simpleslides:contrastcolor} ;
fill p[4] withcolor \MPcolor{simpleslides:altcontrastcolor} ;
fill p[5] withcolor \MPcolor{simpleslides:altcontrastcolor} ;
StopPage ;
\stopuseMPgraphic

\startuseMPgraphic{simpleslides:MP:vertical}
StartPage ;
save a, b ;
numeric a, b ;

a = 4.5cm ;
b = 0.5cm ;

z[1] = ulcorner Page shifted (a,0) ;
z[2] = llcorner Page shifted (a,0) ;
z[3] = ulcorner Page shifted (0,-b) ;
z[4] = urcorner Page shifted (0,-b) ;
z[5] = llcorner Page shifted (0,b) ;
z[6] = lrcorner Page shifted (0,b) ;
z[7] = ulcorner Page shifted (a,-b) ;
z[8] = llcorner Page shifted (a,b) ;

save p ;
path p[] ;
p[1] = ulcorner Page -- z[1] -- z[2] -- llcorner Page -- cycle ;
p[2] = ulcorner Page -- urcorner Page -- z[4] -- z[3] -- cycle ;
p[3] = llcorner Page -- lrcorner Page -- z[6] -- z[5] -- cycle ;
p[4] = ulcorner Page -- z[1] -- z[7] -- z[3] -- cycle ;
p[5] = llcorner Page -- z[5] -- z[8] -- z[2] -- cycle ;

fill Page withcolor \MPcolor{simpleslides:backgroundcolor} ;
fill p[1] withcolor \MPcolor{simpleslides:contrastcolor} ;
fill p[2] withcolor \MPcolor{simpleslides:contrastcolor} ;
fill p[3] withcolor \MPcolor{simpleslides:contrastcolor} ;
fill p[4] withcolor \MPcolor{simpleslides:altcontrastcolor} ;
fill p[5] withcolor \MPcolor{simpleslides:altcontrastcolor} ;
StopPage ;
\stopuseMPgraphic


%D We define these backgrounds as overlays:

\defineoverlay
  [simpleslides:background:horizontal]
  [\useMPgraphic{simpleslides:MP:horizontal}]

\defineoverlay
  [simpleslides:background:vertical]
  [\useMPgraphic{simpleslides:MP:vertical}]

\defineoverlay 
  [simpleslides:background:title] 
  [\useMPgraphic{simpleslides:MP:title}] 

%D We want the title to placed in color. 

\setupTitle
  [\c!title=,
   \c!author=,
   \c!date=\currentdate,
   \c!headstyle=,
   \c!headcolor={simpleslides:backgroundcolor},
   \c!align=middle,
   \c!before=\vfill,
   \c!after=\vfill,
   \c!title\c!style={\switchtobodyfont[\TitleSize]},
   \c!title\c!color=simpleslides:backgroundcolor,
   \c!title\c!align=middle,
   \c!author\c!style=,
   \c!author\c!color=simpleslides:backgroundcolor,
   \c!author\c!align=middle, 
   \c!date\c!style=,
   \c!date\c!color=simpleslides:backgroundcolor,
   \c!date\c!align=middle,
   \c!before\c!title=,
   \c!before\c!author=,
   \c!before\c!date=,
   \c!after\c!title={\blank[1*line]},
   \c!after\c!author={\blank[2*line]},
   \c!after\c!date=]

%D We want the slide title on the top

\setupSlideTitle
   [\c!after=,
    \c!alternative=layer,
    \c!width=\textwidth,
    \c!height=2.5cm,
    \c!color=simpleslides:backgroundcolor]

%D The symbol for the first level of itemizations. 

\definesymbol[1][\useMPgraphic{simpleslides:itemize:square}]
%\setupitemize[1][inmargin][color=simpleslides:backgroundcolor]

\protect
\stopmodule

\endinput



% Write Macro "Topic"

% This macro takes a keyword and appends it to a list (a LUA table?), at the same
% time, it puts the keywords into a MPvariable. The complete list is written in
% MP to the left of the slide; the current Topic written white on blue, the
% others black on gray.