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%D \module
%D [ file=t-graysquare,
%D version=2007.07.17,
%D title=\CONTEXT\ Style File,
%D subtitle=Presentation Module graysquare,
%D author=Thomas A. Schmitz,
%D date=\currentdate,
%D copyright={Thomas A. Schmitz}]
%C
%C Copyright 2007 Thomas A. Schmitz.
%C This file may be distributed under the GNU General Public License v. 2.0.
%D This file provides the \quotation{graysquare} style for the presentation
%D module. It is loaded at runtime. This minimalistic design is inspired by a
%D presentation Taco gave at EuroTeX 2006.
\writestatus{loading}{module graysquare}
\startmodule[graysquare]
\unprotect
%D The taspresentation module provides a skeleton into which different styles
%D can be hooked. It uses a number of variables and macros which have to be set
%D beforehand. Some parts are optional. We begin with the necessary definitions:
%D We define our colors:
\definecolor [a] [r=.95,g=.95,b=.95]
\definecolor [b] [r=.7,g=.1,b=.3]
\definecolor [c] [s=.3]
\definecolor [Item] [r=.7,g=.1,b=.3]
%D We start colors:
\setupcolors[state=start]
%D These macros are used for placing figures/pictures:
\define\NormalHeight{\textheight}
\define\NormalWidth{.5\textwidth}
\define\PictureFrameHeight{\textheight}
\define\PictureFrameWidth{.5\textwidth}
%D The page layout:
\setuplayout [width=fit,
height=middle,
margin=0cm,
height=fit,
margindistance=0cm,
header=0cm,
footer=0cm,
topspace=2cm,
backspace=1.5cm,
location=singlesided]
%D The macro for typesetting the Slidetitle; this is adapted from a sample
%D document that Brooks Moses published on the wiki:
\definelayer[slidetitle]
[width=\paperwidth,
height=\paperheight,
x=15mm]
\define[1]\Slidetitle{\page\setlayer[slidetitle]%
{\framed[framecolor=red,frame=off,width=\textwidth,height=3cm,offset=0pt,top=\vss,bottom=\vss,align=left]{\switchtobodyfont[\Titlesize]\color[b]{#1}}}}
%D The macro \tex{Maketitle} produces a default title page with the author, the
%D title of the presentation, and the date. Using it is not mandatory.
\define\Maketitle{%
\titback
\null
\vfill
\midaligned{\switchtobodyfont[\Titlesize]\color[b]{\getvariable{taspresent}{title}}}
\blank[2*line]
\midaligned{\color[b]{\getvariable{taspresent}{author}}}
\blank[3*line]
\midaligned{\color[b]{\currentdate}}
\vfill
\null}
%D The following parts are optional; if you don't use backgrounds and are
%D content with CONTEXT's default itemization, you don't have to set these
%D macros.
%D We let Metapost calculate the background:
\startuseMPgraphic{bottom}
StartPage ;
fill Page withcolor \MPcolor{a} ;
z.b1 = llcorner Field[Text][Text] ;
z.b2 = lrcorner Field[Text][Text] ;
path wdt ;
wdt = z.b1 -- z.b2 ;
numeric diff; diff = .3cm ;
numeric arc; arc = arclength (wdt) - diff ;
numeric pages; pages = NOfPages - 1 ;
numeric factor; factor = arc/pages ;
path m[] ;
m[0] = unitsquare xyscaled (diff,diff) shifted (x.b1,0.85cm) ;
fill m[0] withcolor \MPcolor{c} ;
if PageNumber = 1:
fill m[0] xyscaled (0,2) shifted (0,-diff-.85cm) withcolor \MPcolor{b} ;
fi ;
for i = 1 upto pages:
m[i] = m[0] shifted (i*factor,0) ;
fill m[i] withcolor \MPcolor{c} ;
if i+1 = PageNumber:
% fill m[i] withcolor \MPcolor{b} ;
fill m[i] xyscaled (0,2) shifted (0,-diff-.85cm) withcolor \MPcolor{b} ;
fi ;
endfor ;
StopPage ;
\stopuseMPgraphic
%D We define these backgrounds as overlays:
\defineoverlay
[lecbackground]
[\useMPgraphic{bottom}]
%D These are shortcuts to switch backgrounds:
\define\lecback{\setuplayout[header=1cm]\setupbackgrounds[page][background={lecbackground,slidetitle}]}
\define\titback{\setuplayout[header=0cm]\setupbackgrounds[page][background=lecbackground]}
\define\picback{\setuplayout[header=0cm]\setupbackgrounds[page][background={lecbackground,slidetitle}]}
\define\noback{\setupbackgrounds[page][background=nobackground]}
%D We use combinations for placing vertical pictures and text side by side, and
%D we want a distance of 1.1 cm between both.
\setupcombinations[distance=0cm]
%D The symbol for the first level of itemizations.
\definesymbol[1][\useMPgraphic{ItSquare}]
\setupitemize[1][color=b]
\protect
\stopmodule
\endinput
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