%D \module
%D   [      file=s-present-slanted, % was: s-pre-64,
%D        version=2006.05.11,
%D          title=\CONTEXT\ Style File,
%D       subtitle=Presentation Environment Slanted,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

%D This style is kept as reference (but can be usedof course). It was used at the
%D TUG conference in San Diego in 2007 (the very early days if \LUATEX\ and \MKIV).
%D
%D This was one of he four presentations, each with a different style. The other
%D styles were quite ok but I just lack time (ane motivation) to generalize them,

\usemodule[s][pre-60]

\newcounter\shapesynctag
\newdimen  \slantedshapedimen
\newdimen  \slantedshapestep
\newdimen  \slantedshapeleftskip
\newdimen  \slantedshapeoffset
\newdimen  \slantedshapeextra
\newdimen  \slantedshapedelta

\positioningtrue

\unexpanded\def\AdaptShape
  {\doglobal\increment\shapesynctag
   \getnoflines\textheight
   \slantedshapestep\dimexpr\slantedshapeleftskip/\noflines\relax
   \leftskip\slantedshapeleftskip
   \scratchdimen\dimexpr
     \MPy{text:\MPp\shapesynctag}
    +\MPh{text:\MPp\shapesynctag}
    -\topskip
    -\MPy\shapesynctag
    +\slantedshapeextra
   \relax
   \getnoflines\scratchdimen
   \slantedshapedimen \noflines \slantedshapestep
   \scratchtoks\emptytoks
   \dorecurse{30}
     {\appendetoks
         \the\dimexpr
           -\slantedshapedimen
           +\slantedshapeoffset
           +\slantedshapedelta
         \relax
         \space
         \the\dimexpr
           \hsize
          -2\slantedshapeoffset
         \relax
         \space
      \to\scratchtoks
      \advance\slantedshapedimen \slantedshapestep}%
   \parshape 30 \the\scratchtoks
   \strut\xypos\shapesynctag}

\setuppapersize[S6][S6]

\setupinteraction
  [state=start,
   click=no]

\setupinteractionscreen
  [option=max]

\setuplayout
  [backspace=12pt,
   topspace=24pt,
   height=middle,
   width=middle,
   header=0pt,
   footer=0pt]

\definecolor[maincolor][b=.5]
\definecolor[somecolor][g=.5]
\definecolor[morecolor][r=.5]

\setupcolors
  [textcolor=maincolor]

\setupbodyfont
  [pagella]

\setupbackgrounds
  [text]% [text]
  [background={base,text,invoke}]

\definelayer
  [text]
  [width=\textwidth,
   height=\textheight]

\definelayer
  [base]
  [width=\textwidth,
   height=\textheight]

\definetype [epet] [style=,color=morecolor]
\setuptype         [style=,color=somecolor]
\slantedshapeleftskip150pt
\slantedshapeoffset   12pt
\slantedshapeextra    10pt

\startreusableMPgraphic{page}
    StartPage ;
        fill Page withcolor \MPcolor{maincolor} ;
        path p ; p := Field[Text][Text] enlarged 6pt ;
        p :=
            llcorner p shifted (0,-12pt) --
            lrcorner p shifted (-150pt,0) --
            urcorner p shifted (0,12pt) --
            ulcorner p shifted (150pt,0) --
            cycle ;
        fill p
            withcolor .9white ;
    StopPage ;
\stopreusableMPgraphic

\defineoverlay
  [page]
  [\reuseMPgraphic{page}]

\setupbackgrounds
  [page]
  [background=page]

\setupalign
  [flushleft]

\unexpanded\def\StartItem
  {\blank[line]
   \begingroup
   \EveryPar {\AdaptShape}} % beware: \ABBREV aan begin gaat fout

\unexpanded\def\StopItem
  {\endgraf
   \endgroup
   \blank[line]}

\unexpanded\def\StartType
  {\blank[halfline]
   \begingroup
   \EveryPar {\AdaptShape}
   \dontleavehmode \quad}

\unexpanded\def\StopType
  {\endgraf
   \endgroup
   \blank[halfline]}

\unexpanded\def\StartTopic#1%
  {\page
   \setlayer
     [text]
     [preset=lefttop,
      rotation=90]
     {\color[white]{\scale[height=24pt]{\strut#1}}}}

\unexpanded\def\StopTopic
  {\page}

\startsetups document:start
    \ifdefined\TitleFont \else
        \definedfont[TitleFont][Bold*default sa 4]
    \fi
    \ifdefined\MainTextFont
        \MainTextFont
    \fi
    \Banner{\documentvariable{location}}
    \StartTopic{\documentvariable{author}}
    \startstandardmakeup
        \TitleFont
        \setupinterlinespace[line=3ex]
        \vfill
        \def\docommand##1{\StartItem\dontleavehmode\quad{\morecolor##1}\StopItem}
        \processcommacommand[\documentvariable{title}]\docommand
        \vfill
    \stopstandardmakeup
    \StopTopic
\stopsetups

\startsetups document:stop
\stopsetups

\unexpanded\def\Banner#1%
  {\setuplayer
     [base]
     [state=repeat]
   \setlayer
     [base]
     [preset=rightbottom]
     {\color[white]{\scale[height=9pt]{\strut#1}}}}

\continueifinputfile{s-present-slanted.mkiv}

\usemodule[present-common]

\inputpresentationfile{tug/2007/tug-2007-fonts.tex}