different page background for chapter title page

different page background for chapter title page

[Thomas A. Schmitz]

Hi all,

I'm sure there must be a solution for this, but I haven't been able to 
find it yet: I want my chapter titles typeset in a sort of frame which 
will span the entire page, not only the text area, so I guess the 
easiest way to do that would be a page background. How can I set up a 
background that will appear only on the title page, in addition to the 
regular background? Bonus question: I also want the color schemes of 
both backgrounds to be different in every chapter, so the solution 
should make this possible. The example is a bit silly, but it shows what 
I'm looking for, I hope.

Thanks, and all best

Thomas

\setuplayout [header=0cm,
               topspace=1.625cm,
               footer=0cm,
               width=fit,
               height=fit]

\definecolor [color:background] [r=0.86,g=0.61,b=0.54]
\definecolor [color:title]      [r=0.91,g=0.75,b=0.7]

\startuseMPgraphic{background:normal}
StartPage ;
numeric h ; h = 10mm ;
z[1] = ulcorner Page ;
z[2] = urcorner Page ;
z[3] = z[2] shifted (0, -h) ;
z[4] = z[1] shifted (0, -h) ;
path p ; p = z[1] -- z[2] -- z[3] -- z[4] -- cycle ;
fill p withcolor \MPcolor{color:background} ;
StopPage ;
\stopuseMPgraphic

\defineoverlay [background:normal] [\useMPgraphic{background:normal}]

\startuseMPgraphic{background:title}
StartPage ;
numeric h ; h = 10mm ;
z[1] = ulcorner Page shifted (0, -1.5*h) ;
z[2] = urcorner Page shifted (0, -1.5*h);
z[3] = z[2] shifted (0, -h) ;
z[4] = z[1] shifted (0, -h) ;
path p ; p = z[1] -- z[2] -- z[3] -- z[4] -- cycle ;
fill p withcolor \MPcolor{color:title};
StopPage ;
\stopuseMPgraphic

\defineoverlay [background:title] [\useMPgraphic{background:title}]

\setupbackgrounds[page][background={background:normal,background:title}]

\starttext

\startchapter[title=One]

\input tufte

\page

\input knuth

\stopchapter

\startchapter[title=Two]

\definecolor [color:background] [r=0.82,g=0.85,b=0.68]
\definecolor [color:title]      [r=0.86,g=0.88,b=0.76]

\input tufte

\page

\input knuth

\stopchapter

\stoptext
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Re: different page background for chapter title page

[Hans Hagen]

Hi,

You know the price you have to pay: wikifying ..


\setuplayout
   [header=0cm,
    topspace=1.625cm,
    footer=0cm,
    width=fit,
    height=fit]

\startMPinclusions
     numeric MyTitlePageDone[] ;
\stopMPinclusions

\startuseMPgraphic{background:normal}
     StartPage ;
         fill
             (topboundary Page --cycle) enlarged(0,5mm) shifted (0,-5mm)
             withcolor 
\MPcolor{color:background:\namedstructureuservariable{chapter}{mycolor}} ;
     StopPage ;
\stopuseMPgraphic

\defineoverlay
   [background:normal]
   [\useMPgraphic{background:normal}]

\startuseMPgraphic{background:title}
     if unknown 
MyTitlePageDone.\namedstructureuservariable{chapter}{mycolor} :
         StartPage ;
             fill
                 ((topboundary Page --cycle) enlarged(0,5mm)) shifted 
(0,-20mm)
                 withcolor 
\MPcolor{color:title:\namedstructureuservariable{chapter}{mycolor}} ;
         StopPage ;
         MyTitlePageDone.\namedstructureuservariable{chapter}{mycolor} 
:= 1 ;
     fi ;
\stopuseMPgraphic

\defineoverlay
   [background:title]
   [\useMPgraphic{background:title}]

\setupbackgrounds
   [page]
   [background={background:normal,background:title}] % could be drawn in 
one go

\definecolor [color:title:one]      [r=0.86,g=0.88,b=0.76]
\definecolor [color:background:one] [.9(color:title:one)]

\definecolor [color:title:two]      [g=0.86,r=0.88,b=0.76]
\definecolor [color:background:two] [.9(color:title:two)]

\starttext

\startchapter[title=One][mycolor=one] \input tufte \page \input knuth 
\stopchapter
\startchapter[title=Two][mycolor=two] \input tufte \page \input knuth 
\stopchapter

\stoptext

Of course more solutions are possible. Btw, watch the topboundary 
trickery and the fractional color.

Hans

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               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: different page background for chapter title page

[Thomas A. Schmitz]

On 03/23/2013 01:27 PM, Hans Hagen wrote:
> Hi,
>
> You know the price you have to pay: wikifying ..
>

Hi Hans,

thanks a lot - will do after I have played with it and understood at 
least the main parts of it!

All best

Thomas
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________