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1%D \module
2%D   [      file=s-present-shaded,
3%D        version=2014.04.30,
4%D          title=\CONTEXT\ Style File,
5%D       subtitle=Presentation Environment Shaded Content,
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%D As usual, this style was made for a Bacho\TeX\ conference. It doesn't do anything
15%D special apart from progressively changing the shaded backgrounds. You can
16%D redefine the colors \type {maincolor} and \type {othercolor} to suit your taste.
17
18\startmodule[present-shaded]
19
20\setuppapersize[S6]
21
22\setuplayout
23  [cutspace=120pt,
24   rightmargin=100pt,
25   margindistance=10pt,
26   rightmargin=0pt,
27   margindistance=0pt,
28   rightedge=100pt,
29   edgedistance=12.5pt,
30   backspace=10pt,
31   topspace=10pt,
32   bottomspace=10pt,
33   header=0pt,
34   footer=0pt,
35   width=middle,
36   height=middle]
37
38\setupbodyfont
39  [dejavu]
40
41\setuplist
42  [chapter]
43  [before=,
44   after=,
45   inbetween=\vskip5pt,
46   inbetween=\vfill,
47   alternative=e,
48   width=\hsize,
49   height=\measure{menu-item-height},
50   style=bold,
51   frame=off,
52   background=color,
53   backgroundcolor=\structurelistuservariable{color},
54   criterium=text]
55
56\setupcolors
57  [textcolor=white]
58
59\setupinteraction
60  [state=start,
61   menu=on,
62   color=white,
63   click=off,
64   contrastcolor=white]
65
\setupinteractionmenu
67  [right]
68  [topoffset=5pt,
69   bottomoffset=5pt]
70
\startinteractionmenu[right]
72    \placelist[chapter]
\stopinteractionmenu
74
75\definecolor[maincolor] [b=.4]
76\definecolor[othercolor][s=.4]
77
78\definecolor[verydark][s=.2]
79\definecolor[lessdark][1.5(verydark)]
80
81%  we need some extra counter values: \getstructurenumber{self}
82
83\setupmodule
84  [n=\the\numexpr\lastpage-\plusone\relax]
85
86\appendtoks
87    \dorecurse {\moduleparameter{present-shaded}{n}} {
88        \definecolor[shade:#1][\luaexpr{.8*#1/\moduleparameter{present-shaded}{n}}(maincolor,othercolor)]
89    }
90\to \everystarttext
91
92\setupbackgrounds
93  [page]
94  [background=color,
95   backgroundoffset=5pt,
96   backgroundcolor=verydark]
97
98\setupbackgrounds
99  [text]
100  [background={invoke,color},
101   backgroundoffset=5pt,
102   backgroundcolor=\namedstructureuservariable{chapter}{color}]
103
104\definemeasure
105  [menu-item-height]
106  [(\textheight-\numexpr\moduleparameter{present-shaded}{n}-1\relax\dimexpr5pt\relax)/\moduleparameter{present-shaded}{n}]
107
108\setupitemgroup
109  [itemize]
110  [packed]
111
112\setuphead
113  [chapter]
114  [number=no,
115   style=\bfc]
116
117\setuphead
118  [section]
119  [number=no,
120   style=\bf,
121   before=\blank,
122   after=\blank]
123
124\setupdocument
125  [title=Title,
126   subtitle=Subtitle,
127   location=\currentdate]
128
129\startsetups document:start
130
131    \setupbackgrounds
132      [text]
133      [backgroundcolor=lessdark]
134
135    \startstandardmakeup
136
137        \setupalign[middle]
138
139        \vfil
140        \dontleavehmode \scale[width=.8\textwidth] {\documentvariable{title}}
141        \vfil
142        \dontleavehmode \scale[width=.6\textwidth] {\documentvariable{subtitle}}
143        \vfil \vfil \vfil
144        \dontleavehmode \scale[width=.4\textwidth] {\documentvariable{location}}
145        \vfil
146
147    \stopstandardmakeup
148
149    \setupbackgrounds
150      [text]
151      [backgroundcolor=\namedstructureuservariable{chapter}{color}]
152
153\stopsetups
154
155\stopmodule
156
157\continueifinputfile{s-present-shaded.mkiv}
158
159\usemodule[present-common]
160
161\inputpresentationfile{examples/present-shaded-001.tex}
162