Set background color for a single page

Set background color for a single page

[Tim Li]

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Sometimes, I only want a single page, say, the titlepage or page 32, with colored background rather that the whole document. Here are some codes: \starttext% titlepage (yellow)
\startmakeup[standard]
\midaligned{How to make document}
\stopmakeup
% page1 (gray)
Many \CONTEXT\ users $\ldots$
\page
% page2 (darkyellow)
Many \TEX\ users $\ldots$ 
\stoptext
Of course, it is awful that if I set the titlepage yellow, page1 gray and page2 darkyellow. How can I achieve this? regrads, Tim 		 	   		  

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Re: Set background color for a single page

[Aditya Mahajan]

On Tue, 23 Apr 2013, Tim Li wrote:

> Sometimes, I only want a single page, say, the titlepage or page 32, with colored background rather that the whole document. Here are some codes: \starttext% titlepage (yellow)
> \startmakeup[standard]
> \midaligned{How to make document}
> \stopmakeup
> % page1 (gray)
> Many \CONTEXT\ users $\ldots$
> \page
> % page2 (darkyellow)
> Many \TEX\ users $\ldots$
> \stoptext
> Of course, it is awful that if I set the titlepage yellow, page1 gray and page2 darkyellow. How can I achieve this? regrads, Tim

See: http://thread.gmane.org/gmane.comp.tex.context/75726/focus=75743

Another alternative is to pick the color from a list using 
\convertnumber{colors}{userpage}, similar to the solution at
http://tex.stackexchange.com/a/54062/323

Aditya
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___________________________________________________________________________________

Re: Set background color for a single page

[Tim Li]

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Aditya, Thanks. Defining a color conversion is a good idea, and we can apply this conversion easily to somethings like chapter, section, etc. which has a `color' filed to assign, but not pages. Is there a way to set the color of a page like that done for chapters and sections? Tim
 > Date: Tue, 23 Apr 2013 07:28:09 -0400
> From: adityam@umich.edu
> To: ntg-context@ntg.nl
> Subject: Re: [NTG-context] Set background color for a single page
> 
> On Tue, 23 Apr 2013, Tim Li wrote:
> 
> > Sometimes, I only want a single page, say, the titlepage or page 32, with colored background rather that the whole document. Here are some codes: \starttext% titlepage (yellow)
> > \startmakeup[standard]
> > \midaligned{How to make document}
> > \stopmakeup
> > % page1 (gray)
> > Many \CONTEXT\ users $\ldots$
> > \page
> > % page2 (darkyellow)
> > Many \TEX\ users $\ldots$
> > \stoptext
> > Of course, it is awful that if I set the titlepage yellow, page1 gray and page2 darkyellow. How can I achieve this? regrads, Tim
> 
> See: http://thread.gmane.org/gmane.comp.tex.context/75726/focus=75743
> 
> Another alternative is to pick the color from a list using 
> \convertnumber{colors}{userpage}, similar to the solution at
> http://tex.stackexchange.com/a/54062/323
> 
> Aditya
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
 		 	   		  

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

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wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Set background color for a single page

[Aditya Mahajan]

On Tue, 23 Apr 2013, Tim Li wrote:

> Aditya, Thanks. Defining a color conversion is a good idea, and we can apply this conversion easily to somethings like chapter, section, etc. which has a `color' filed to assign, but not pages. Is there a way to set the color of a page like that done for chapters and sections? Tim

Do you want to assign a specific color to each page, or do you want the 
pages to cycle through a finite list of colors.

Aditya
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Set background color for a single page

[Tim Li]

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Aditya, I want to know both please. Now I use the   \start  \definecolor ...  ...  \startmakeup[standard]  ...  \stopmakeup  \stopto assign a specific color to the tilepage whose content is on a single page exactly. But I don't know how to set the background for a single page, say, page 3 if a document has more than three pages. Also, I don't know how to cycle pages through a finite list of colors. Can you show me that? Tim
 > Date: Tue, 23 Apr 2013 09:47:32 -0400
> From: adityam@umich.edu
> To: ntg-context@ntg.nl
> Subject: Re: [NTG-context] Set background color for a single page
> 
> On Tue, 23 Apr 2013, Tim Li wrote:
> 
> > Aditya, Thanks. Defining a color conversion is a good idea, and we can apply this conversion easily to somethings like chapter, section, etc. which has a `color' filed to assign, but not pages. Is there a way to set the color of a page like that done for chapters and sections? Tim
> 
> Do you want to assign a specific color to each page, or do you want the 
> pages to cycle through a finite list of colors.
> 
> Aditya
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
 		 	   		  

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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: Set background color for a single page

[Aditya Mahajan]

> Aditya, I want to know both please. Now I use the \start \definecolor 
> ...  ...  \startmakeup[standard] ...  \stopmakeup \stopto assign a 
> specific color to the tilepage whose content is on a single page 
> exactly. But I don't know how to set the background for a single page, 
> say, page 3 if a document has more than three pages. Also, I don't know 
> how to cycle pages through a finite list of colors. Can you show me 
> that? Tim

One way to do this is to set

\setupbackgrounds[page][background=color, backgroundcolor=\PageColor]

and define \PageColor such that it expands to an appropriate color. For 
arbitrary control, you can use a lua function, for example:

\startluacode
   thirddata = thirddata or {}

   function thirddata.getpagecolor(num)
     -- A lua function that assigns colors based on page numbers
     if num == 3 then
        context("blue")
     elseif num == 5 then
        context("red")
     end
   end
\stopluacode

\def\PageColor%
   {\ctxlua{thirddata.getpagecolor(\rawcountervalue[userpage])}}

\setupbackgrounds[page][background=color, backgroundcolor=\PageColor]

\setuppapersize[S3]
\starttext

\dorecurse{10}{\input knuth \par}

\stoptext

You can also use a lua table to assign colors, and then you do not have to 
build a ladder of if statements.

Aditya
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: Set background color for a single page

[Tim Li]

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Aditya, thanks. I like this Lua way, but I have to explore the Lua world first. Ok, reading PIL and coding in Lua.
 Tim> Date: Tue, 23 Apr 2013 10:51:24 -0400
> From: adityam@umich.edu
> To: ntg-context@ntg.nl
> Subject: Re: [NTG-context] Set background color for a single page
> 
> > Aditya, I want to know both please. Now I use the \start \definecolor 
> > ...  ...  \startmakeup[standard] ...  \stopmakeup \stopto assign a 
> > specific color to the tilepage whose content is on a single page 
> > exactly. But I don't know how to set the background for a single page, 
> > say, page 3 if a document has more than three pages. Also, I don't know 
> > how to cycle pages through a finite list of colors. Can you show me 
> > that? Tim
> 
> One way to do this is to set
> 
> \setupbackgrounds[page][background=color, backgroundcolor=\PageColor]
> 
> and define \PageColor such that it expands to an appropriate color. For 
> arbitrary control, you can use a lua function, for example:
> 
> \startluacode
>    thirddata = thirddata or {}
> 
>    function thirddata.getpagecolor(num)
>      -- A lua function that assigns colors based on page numbers
>      if num == 3 then
>         context("blue")
>      elseif num == 5 then
>         context("red")
>      end
>    end
> \stopluacode
> 
> \def\PageColor%
>    {\ctxlua{thirddata.getpagecolor(\rawcountervalue[userpage])}}
> 
> \setupbackgrounds[page][background=color, backgroundcolor=\PageColor]
> 
> \setuppapersize[S3]
> \starttext
> 
> \dorecurse{10}{\input knuth \par}
> 
> \stoptext
> 
> You can also use a lua table to assign colors, and then you do not have to 
> build a ladder of if statements.
> 
> Aditya
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________
 		 	   		  

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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
___________________________________________________________________________________