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1%D \module
2%D   [      file=s-pre-18,
3%D        version=1999.08.20,
4%D          title=\CONTEXT\ Style File,
5%D       subtitle=Presentation Environment 18,
6%D         author=Hans Hagen,
7%D           date=\currentdate,
8%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
9%C
10%C This module is part of the \CONTEXT\ macro||package and is
11%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
12%C details.
13
14% todo: met pos en dan iedere titel
15
16\setuppapersize
17  [S6][S6]
18
19\setupbodyfont
20  [loc,ppl]
21
22\setupcolors
23  [state=start]
24
25\definecolor [shade-1] [s=.7]
26\definecolor [shade-2] [s=.1]
27
28\definecolor [shade-3] [s=.8]
29\definecolor [shade-4] [b=.8]
30
31\definecolor [shade-5] [g=.6]
32
33\setuplayout
34  [topspace=1cm,
35   height=fit,
36   backspace=1cm,
37   width=middle,
38   header=0pt,
39   footer=0pt,
40   bottomdistance=1cm]
41
42\setupbackgrounds
43  [state=repeat]
44
45\setupbackgrounds [page] [background=page]
46
47\defineoverlay [page] [\useMPgraphic{page}]
48\defineoverlay [text] [\useMPgraphic{text}]
49
50\startuseMPgraphic{page}
51  StartPage ;
52    path p ; numeric s ; pair cp ; cp := center Page ;
53    s := define_circular_shade(cp,cp,0,TextWidth,
54      \MPcolor{shade-1},\MPcolor{shade-2}) ;
55    fill Page withshade s ;
56    p := fullcircle xyscaled (TextWidth+1cm, TextHeight+1cm) shifted cp ;
57    s := define_circular_shade(cp,cp,0,TextWidth,\MPcolor{shade-3},
58      \MPcolor{shade-4}) ;
59    fill p withshade s ;
60  StopPage
61\stopuseMPgraphic
62
63\startuseMPgraphic{text}
64  StartPage ;
65    path p ; numeric s, t ; pair cp ; cp := center Page ;
66    s := define_circular_shade(cp,cp,0,TextWidth,
67      \MPcolor{shade-1},\MPcolor{shade-2}) ;
68    fill Page withshade s ;
69    p := llcorner Field[Text][Bottom] --
70         lrcorner Field[Text][Bottom] --
71         urcorner Field[Text][Text]   --
72         ulcorner Field[Text][Text]   -- cycle ;
73    p := p enlarged .5cm randomized .5cm ;
74    t := define_circular_shade(cp,cp,0,TextWidth,\MPcolor{shade-3},
75      \MPcolor{shade-4}) ;
76    fill p withshade t ;
77
78    def bottom_menu_button (expr nn, rr, pp, xx, yy, ww, hh, dd) =
79      if (pp>0) and (rr>0) :
80        if     nn = 1 :
81          p := (0,0)--(ww,hh/2)--(0,hh)--cycle ;
82        elseif nn = 2 :
83          p := (0,hh/2)--(ww,hh)--(ww,0)--cycle ;
84        else :
85          p := origin--cycle ;
86        fi ;
87        fill p randomized 2.5mm shifted (xx,yy) withshade s ;
88      fi ;
89    enddef ;
90
91    \MPmenubuttons{bottom}
92
93    if length \MPstring{topic} > 0 :
94      graphictext
95        \MPstring{topic}
96        scaled 3
97        shifted ulcorner Field[Text][Text]
98        shifted (0,-1.5cm)
99        withshade s ;
100    fi ;
101
102  StopPage ;
103\stopuseMPgraphic
104
105\setupinteractionmenu
106  [bottom]
107  [state=start,
108   frame=off,
109   left=\hfill,
110   middle=\hskip.5cm,
111   width=2\bottomheight,
112   position=yes]
113
114\startinteractionmenu[bottom]
115  \but [previouspage] \\
116  \but [nextpage]     \\
117\stopinteractionmenu
118
119\setupinteraction
120  [state=start,
121   click=no,
122   color=shade-5,
123   contrastcolor=shade-5,
124   menu=on]
125
126\setupwhitespace
127  [big]
128
129\def\Topic#1%
130  {\page
131   \setMPtext{topic}{#1}
132   \vbox to 2cm{}}
133
134\setMPtext{topic}{}
135
136\def\StartTitlePage%
137  {\startstandardmakeup[bottomstate=none]
138   \setupalign[middle]
139   \vfill}
140
141\def\StopTitlePage%
142  {\stopstandardmakeup
143   \setuplayout[bottom=1.5cm]
144   \setupbackgrounds[page][background=text]}
145
146\def\TitleString#1#2%
147  {\indent
148   \startMPcode
149     graphictext
150       "#2"
151       scaled #1
152       withdrawcolor .4white
153       withfillcolor .7white
154       withpen pencircle scaled 2pt ;
155   \stopMPcode
156   \vfill}
157
158\doifnotmode{demo}{\endinput}
159
160\starttext
161
162\StartTitlePage
163  \TitleString{8}{Welcome}
164  \TitleString{4}{to my favourite}
165  \TitleString{8}{Quotes}
166\StopTitlePage
167
168\Topic {Douglas R. Hofstadter} \input douglas \page
169\Topic {Donald  E. Knuth}      \input knuth   \page
170\Topic {Edward  R. Tufte}      \input tufte   \page
171\Topic {Hermann    Zapf}       \input zapf    \page
172
173\stoptext
174