On 2/3/2018 10:02 PM, jmm...@us.es wrote:
Hi, I'm starting a presentation with ConTeXt.
I'd like to visually differentiate each section, so I've come up with
two complementary approaches to do that:
* Use a different color palette for each section, and
* Mark the progress bar to indicate the start of each section.
I've done an small example (at the end) but:
* Last Subject of a Topic take color from next Topic. (e.g. "Some greenB")
* I don't like interactionBar styles provided.
I'd like something like:
|-|-|-|--|--
(horizontal line and a vertical line at the begin of each section and a
vertical line of different color for current position)
other option I like:
##%%@@HHH&&&
(each letter represents a color. It's a bar with colors marking size of
text. So it's a series of color rectangles with colors for each section
and a vertical line for current position)
The main problems are:
* How can I pass the first page of each section to MetaPost?
you need to get the logic ok yourself, something like:
\startuseMPgraphic{PageShape}
StartPage ;
numeric n ; n := \number\nofsubpages ;
numeric m ; m := \number\subpageno ;
if (n > 0) and (m > 0) :
pair pa ;
path p ; p := (100pt,100pt) -- (500pt,100pt) ;
draw p
withpen pencircle scaled 5pt
withcolor "BackgroundColor" ;
for i=0,n-1 :
pa := point(1/n) of p ;
draw (pa + (0,10pt)) -- (pa + (0,-10pt))
withpen pencircle scaled 5pt
withcolor "BackgroundColor" ;
endfor ;
draw point (1/m) of p
withpen pencircle scaled 10pt
withcolor "PositionColor" ;
fi ;
StopPage ;
\stopuseMPgraphic
* How can I protect background color of SomeGreenB to be green and not
blue?
just look at the definitions you load ...
\definecolor [MyBackgroundColor] [s=.85]
\setupbackgrounds
[page]
[background=color,
backgroundcolor=MyBackgroundColor]
Thanks.
---8< - Start example
\usemodule[present-original]
\usemodule[present-common]
\definecolor [PageColor] [black]
\definecolor [BackgroundColor] [s=.85]
\definecolor [OrnamentColor] [r=.75]
\definecolor [PositionColor] [s=.55]
\defineoverlay
[PageShape][\useMPgraphic{PageShape}]
\startuseMPgraphic{PageShape}
StartPage ;
path p ; pair pa, pb ; numeric len ; color contrastcolor ;
numeric i;
numeric sections[];
% simulated load of sections
sections[0] := 1;
sections[1] := 4;
sections[2] := 6;
pickup pencircle scaled 5pt ;
p := (100pt,100pt)--(500pt,100pt);
draw p withcolor \MPcolor{OrnamentColor} ;
contrastcolor = \MPcolor{PositionColor} ;
if (RealPageNumber > 0) and (NOfPages > 0):
len := 1/NOfPages ;
i := 0;
forever :
exitunless known sections[i];
pa := point(0+len*sections[i]) of p ;
draw (pa+(0,10pt))--(pa+(0,-10pt)) withcolor
\MPcolor{OrnamentColor} ;
i := i + 1;
endfor ;
pa := point (0+len*RealPageNumber) of p ;
%draw (pa+(0,10pt))--(pa+(0,-10pt)) withcolor contrastcolor ;
draw pa withpen pencircle scaled 10pt withcolor
contrastcolor ;
fi ;
StopPage ;
\stopuseMPgraphic
\setupbackgrounds
[text]
[background={PageShape}]
\starttext
\setupdocument[title={Title},location={Place}]
\startdocument
\definecolor[BackgroundColor][r=0,g=.7,b=0]
\startTopic[title={Topic Green}]
Some text A
\startSubject[title={Some green 1}]
more text B
\stopSubject
\startSubject[title={Some green 2}]
more text B
\stopSubject
\stopTopic
\definecolor[BackgroundColor][r=0,g=0,b=0.7]
\startTopic[title={Topic Blue}]
Some text C
\startSubject[title={Some blue}]
more text D
\stopSubject
\stopTopic
\definecolor[BackgroundColor][r=.7,g=0,b=0]
\startTopic[title={Topic Red}]
Some text E
\startSubject[title={Some Red}]
more text F
\stopSubject
\stopTopic
\stopdocument
\stoptext
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