Re: [NTG-context] Test for displaying a header
Fabrice,
there is difference between putting something on the first page
regardless of the number of pages in your document or do something when
your document contains only a single or more pages.
When you have a header or title which is always placed on the first page
(but not on the following pages) you have to options.
1. Check the current page when to header is placed which can be
done with \doif{\pagenumber}{1}{...}
2. Disable the header on the first page (\setupheader[state=high])
and place your own title as a regular element in the running text.
A case where you have to number the number of total pages is when you
try to show the page counter in the form "Page x of y" for 2 or more
pages. In this case you have to check against the value for the total
number of pages which can be done with
\doifnot{\totalnumberofpages}{1}{...}.
Below are two examples which show how the header/title placement works.
start example 1
\startsetups [header]
\startframed [width=max,height=max]
First page header
\stopframed
\stopsetups
\startsetups [footer]
Page \userpagenumber\ of \lastuserpagenumber
\stopsetups
\setupheadertexts
[\doif{\pagenumber}{1}{\directsetup{header}}]
\setupfootertexts
[\doifnot{\totalnumberofpages}{1}{\directsetup{footer}}]
\starttext
\dorecurse{12}{\samplefile{lorem}\par}
\stoptext
stop example 1
start example 2
\startsetups [header]
\setupheader[state=high]
\startframed [width=max,height=3cm]
First page header
\stopframed
\blank
\stopsetups
\startsetups [footer]
Page \userpagenumber\ of \lastuserpagenumber
\stopsetups
\setuppagenumbering
[location=none]
\setupfootertexts
[\doifnot{\totalnumberofpages}{1}{\directsetup{footer}}]
\starttext
\setup[header]
\dorecurse{12}{\samplefile{lorem}\par}
\stoptext
stop example 2
Wolfgang
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Re: [NTG-context] Test for displaying a header
Fabrice Couvreur schrieb am 27.08.2021 um 10:04:
Hi Wolfgang,
This may not be nicest but seems to work
Fabrice
%%
\definelayout
[1]
[header=10mm]
\setuplayout
[header=0pt,
height=middle]
\setuppagenumbering
[alternative=doublesided,location=]
\setupbackgrounds
[header]
[text]
[frame=off,bottomframe=on,
framecolor=lightgray,rulethickness=1pt]
\startsetups[header]
\doifelse{\totalnumberofpages}{1}
{\setuplayout[1]}
{\setuplayout[reset]}
\stopsetups
\starttext
\input knuth
%\dorecurse{10}{\input knuth\par}
\stoptext
I have no idea what you try to achieve but the check for the number of
pages in your document is never used. The layout on the first page is
different from the following pages but this is just how \definelayout
work when you use a number as first argument.
What you have to understand is that a setups-environment is just a macro
definition where you provide the names as argument to the start command.
This means
\startsetups [header]
...
\stopsetups
works the same way as
\def\internalname_header
{...}
but you have to use
\setups [header]
rather than
\internalname_header
to get the content of the environment.
Wolfgang
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Re: [NTG-context] Test for displaying a header
Fabrice Couvreur via ntg-context schrieb am 26.08.2021 um 19:06:
Hi,
Using this (almost what I'm trying to do) without success
[...]
\startsetups[header]
\doifelse{\totalnumberofpages}{1}
{\setupheadertexts[\setups{header}]}
{}
\stopsetups
This stores the page check in the setups environment but you never call
it. The call from within the environment itself can't work because the
content is never evaluated and even if it would be called you create an
endless loop.
Wolfgang
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Re: [NTG-context] Test for displaying a header
Hi,
Using this (but it's not exactly what I want) it works
test-1.tex %%
\setuppagenumbering
[alternative=doublesided,location=]
\definelayout
[1]
[header=10mm]
\setuplayout
[header=0pt,
height=middle]
\setupbackgrounds
[header]
[text]
[frame=off,bottomframe=on,
framecolor=lightgray,rulethickness=1pt]
\starttext
\dorecurse{5}{\samplefile{lorem}}
%\dorecurse{1}{\samplefile{lorem}}
\stoptext
%%ù
Using this (almost what I'm trying to do) without success
test-2.tex %
\setuppagenumbering
[alternative=doublesided,location=]
\setupbackgrounds
[header]
[text]
[frame=off,bottomframe=on,
framecolor=lightgray,rulethickness=1pt]
\startsetups[header]
\doifelse{\totalnumberofpages}{1}
{\setupheadertexts[\setups{header}]}
{}
\stopsetups
\starttext
\dorecurse{5}{\samplefile{lorem}}
%\dorecurse{1}{\samplefile[lorem]r}
\stoptext
%%%
Fabrice
Le jeu. 26 août 2021 à 17:56, Wolfgang Schuster via ntg-context <
ntg-context@ntg.nl> a écrit :
> Taco Hoekwater via ntg-context schrieb am 26.08.2021 um 16:34:
> >
> > Hi,
> >
> >> On 26 Aug 2021, at 16:07, Fabrice Couvreur via ntg-context <
> ntg-context@ntg.nl> wrote:
> >>
> >> Hi,
> >> I know I asked the question a few years ago, but I don't remember !
> >> The idea is to test whether the document contains only one page or not.
> >
> > Perhaps not the nicest solution, but this works:
> >
> > \doifvalueelse
> >{\lastpage}
> >{1}
> >{\message{true}}
> >{\message{false}}
>
>
> Same solution but better counter name:
>
> \doifelse{\totalnumberofpages}{1}{...}{...}
>
> Wolfgang
>
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Re: [NTG-context] Test for displaying a header
Taco Hoekwater via ntg-context schrieb am 26.08.2021 um 16:34:
Hi,
On 26 Aug 2021, at 16:07, Fabrice Couvreur via ntg-context
wrote:
Hi,
I know I asked the question a few years ago, but I don't remember !
The idea is to test whether the document contains only one page or not.
Perhaps not the nicest solution, but this works:
\doifvalueelse
{\lastpage}
{1}
{\message{true}}
{\message{false}}
Same solution but better counter name:
\doifelse{\totalnumberofpages}{1}{...}{...}
Wolfgang
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Re: [NTG-context] Test for displaying a header
Hi,
> On 26 Aug 2021, at 16:07, Fabrice Couvreur via ntg-context
> wrote:
>
> Hi,
> I know I asked the question a few years ago, but I don't remember !
> The idea is to test whether the document contains only one page or not.
Perhaps not the nicest solution, but this works:
\doifvalueelse
{\lastpage}
{1}
{\message{true}}
{\message{false}}
> If it contains only one page, the header is enabled.
> If it contains several pages, the header is enabled only on the first page
> but not on the others.
> Thanks
> Fabrice
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> Wiki!
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—
Taco Hoekwater E: t...@bittext.nl
genderfluid (all pronouns)
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[NTG-context] Test for displaying a header
Hi, I know I asked the question a few years ago, but I don't remember ! The idea is to test whether the document contains only one page or not. If it contains only one page, the header is enabled. If it contains several pages, the header is enabled only on the first page but not on the others. Thanks Fabrice ___ 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://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___
