\environment doc-env
%\startproduct ctxnotes
\starttext

% 封面
\startMPinclusions
  def random_hash_frame (expr width, height, offset, linewidth ) =

    def delta = ((uniformdeviate .5offset) + .25offset) enddef ;
    x1 := offset ; y1 := offset ; x2 := width-offset ; y2 := height-offset ;

    drawoptions(withpen pencircle scaled linewidth withcolor transparent(1,.8,\MPcolor{BackgroundColor})) ;
    fill z1--(x2,y1)--z2--(x1,y2)--cycle ;

    drawoptions(withpen pencircle scaled linewidth withcolor \MPcolor{OrnamentColor}) ;
    draw (x1-delta,y1)--(x2+delta,y1) ;
    draw (x2,y1-delta)--(x2,y2+delta) ;
    draw (x2+delta,y2)--(x1-delta,y2) ;
    draw (x1,y2+delta)--(x1,y1-delta) ;

    drawoptions();
    setbounds currentpicture to unitsquare xscaled width yscaled height ;
  enddef ;
\stopMPinclusions

\startuseMPgraphic{TitleGraphic}
  for i=1 upto 400 :
    offset := uniformdeviate 10pt ;
    width  := 2*offset + 40pt + uniformdeviate 30pt ;
    height := 2*offset + 30pt + uniformdeviate 10pt ;
    addto currentpicture also
      image(random_hash_frame(width,height,offset,1pt)) shifted
      (uniformdeviate OverlayWidth, uniformdeviate OverlayHeight) ;
  endfor ;
\stopuseMPgraphic

\defineoverlay [TitleGraphic] [\useMPgraphic{TitleGraphic}]

% 前文
\startfrontmatter
\setupbackgrounds [page][background=TitleGraphic]
\startstandardmakeup
  \startcolor[white]
    \startframedtext[middle][width=.8\textwidth,height=5cm]
      \dontleavehmode
      \blank[.5cm]
      \hfil\bfd\ConTeXt\ 学习笔记\hfil
      \blank[.5cm]
      \hfil\bfc Using MkIV\hfil
      \blank[1cm]
      \hfil\bfa Li Yanrui (liyanrui.m2@gmail.com)\hfil
    \stopframedtext
  \stopcolor
  \blank[14cm]
\stopstandardmakeup
\setupbackgrounds [page][background=]
\setuppagenumbering[conversion=romannumerals]
\setuppagenumber[number=1]
\title{目\;\;录}\blank
\placecontent
\stopfrontmatter

% 正文
\startbodymatter
\setuppagenumbering[conversion=number]
\setuppagenumber[number=1]
\setups{HeaderFooter}
\component basis
\component fonts
\component layout
\component references
\component project
\component metafun
\stopbodymatter

% 附录
\startappendices
\title{参考文献}
\placepublications[criterium=all]
\stopappendices

% 后文
\startbackmatter
未完成……
\stopbackmatter

%\stopproduct
\stoptext
