Re: Header background won't go away

[Hans Hagen <pragma@wxs.nl>]

Duncan Hothersall wrote:
> Hi all.
> 
> I have a book with parts and chapters, which wants a tint in the 
> background of the header line. I have the following set-up producing 
> almost what I want (apologies for the length but I've stripped out as 
> much as I can to still show the same effect):
> 
> -- 
> \setupsectionblock[bodypart][page=right]
> %...
> \setuppagenumbering[alternative=doublesided]
> \setuplayout[location=doublesided,
>         backspace=8.5pc,topspace=5.5pc,top=0pt,topdistance=0pt,
>         header=12pt,headerdistance=12pt,height=61pc,footer=16pt,
>     bottom=6pc,leftedge=9pc,leftedgedistance=0pt,leftmargin=0pt,
>     leftmargindistance=0pt,width=29pc,rightmargindistance=0pt,
>     rightmargin=6.5pc,rightedgedistance=0pt,rightedge=6.5pc]
> \setuphead[part]
>      [placehead=yes,command=\XPart,resetnumber=no,page=right,
>       header=high,before=,after=]
> \def\XPart#1#2{#1 #2} %simplified
> \setuphead[chapter]
>      [command=\XChapter,header=high,
>       before=\vbox to 14pc\bgroup,after=\vss\egroup]
> \def\XChapter#1#2{#1 #2} %simplified
> %...
> \setupcolors[rgb=no,cmyk=no,spot=yes,state=start]
> \definecolor[PantoneTwoNineFour][c=1,m=.56,y=0,k=.18]
> \definecolor[IFSblueheadertint][PantoneTwoNineFour][p=.12]
> %...
> \setupbackgrounds[header]
>      [leftedge,leftmargin,text,rightmargin,rightedge]
>      [background=color,backgroundcolor=IFSblueheadertint,state=start]
> \setupheader[state=start]
> \setupheadertexts[margin]
>     []
>     [\hfill\llap{\tfx\getmarking[chapter][current]}]
>     [\hbox to \leftmarginwidth{\rlap{\tfx\getmarking[section][last]\hfil}}]
>     []
> %...
> \starttext
> \startbodymatter
> \part{First part}
> Looks good, but still has band on next page
> \chapter{First chapter}
> Looks good, no band on first page of chapter. \page[yes]
> \section{First section}
> Looks good, the band is there. \page[yes]
> \section{Second section}
> Looks good, the band is still there.
> \chapter{Second chapter}
> Ugh, the band has impinged on my title, and I'm getting an extra odd 
> page at the end too.
> \stopbodymatter
> \stoptext
> -- 
> 
> The above code runs in live.contextgarden.net and demonstrates my 
> problems, which are:
> 
> 1. The big problem - the second chapter title page doesn't suppress the 
> band, even though the first one did. NB this behaviour seems to change 
> depending on whether the previous chapter ends on an odd or even page. 
> Bug, or incorrect header setup?
> 
> 2. Empty pages (like the back of the part title) have the colour band on 
> them - how can this be suppressed for empty pages?
> 
> 3. There's an extra odd page at the end (I've tried a few of the 
> suggested fixes for this but can't get them to work).
> 
> If anyone can answer, especially question 1, I'd be really grateful!

you can do a stepwise page change:

   \setuphead[part][page={yes,blank,right}]
   \setuphead[chapter][header=high,page={yes,blank,right}]

also, in order to let backgrounds adapt to each page, say:

   \setupbackgrounds[state=repeat]

otherwise only text|page backgrounds will be calculated each page and the other 
ones when backgrounds are set/changed (otherwise too slow)

Hans

(some day i'll make this nicer)


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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
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