placing (on) layers

placing (on) layers

[Henning Hraban Ramm via ntg-context]

Hi again,

I’m always struggling with putting stuff on layers, since these just 
never start where I’d expect them to, and the offsets changed a few 
times within the last years.

Please explain how I should define a layer that covers the whole page, 
since the following MWE is wrong (the layer always starts below the 
first line):


\useMPlibrary[dum]

\setuppapersize[A5][A4]
\setuplayout[
   marking=on,
   location=middle,
]
\definemeasure[Bleed][3mm]
\definemeasure[MaxHeight][{\dimexpr\paperheight + 2\measure{Bleed}\relax}]
\definemeasure[MaxWidth][{\dimexpr\paperwidth + 2\measure{Bleed}\relax}]

\definelayer[papier][
   preset=lefttop,
   %x=0mm,y=0mm,
   width=\paperwidth,
   height=\paperheight,
]
\setupbackgrounds[paper][background=cover,state=start]


\starttext
\showframe
TEST

\setlayerframed[papier][
   preset=lefttop,
   %x=-\measure{Bleed},
   %y=-\measure{Bleed},
   offset=overlay,
   %frame=off,
   width=\measure{MaxWidth},
   height=\measure{MaxHeight},
]{\externalfigure[dummy][
   width=\measure{MaxWidth},height=\measure{MaxHeight}
]}

\flushlayer[papier]

\stoptext
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Re: placing (on) layers

[Willi Egger via ntg-context]

Hi Hraban,

if you flush a layer like in your example, then the layer is attached to the left top of the text area. If you want to place it in another place, you will have to move it by x and y dimensions to the right place in the first brackets of the \setlayerframed command . — What would be possible is to attach the layer as a background to one of the different areas of the  paper.

I hope this gives you a hint how to proceed..

Willi

> On 15 Apr 2022, at 21:51, Henning Hraban Ramm via ntg-context <ntg-context@ntg.nl> wrote:
> 
> Hi again,
> 
> I’m always struggling with putting stuff on layers, since these just never start where I’d expect them to, and the offsets changed a few times within the last years.
> 
> Please explain how I should define a layer that covers the whole page, since the following MWE is wrong (the layer always starts below the first line):
> 
> 
> \useMPlibrary[dum]
> 
> \setuppapersize[A5][A4]
> \setuplayout[
>  marking=on,
>  location=middle,
> ]
> \definemeasure[Bleed][3mm]
> \definemeasure[MaxHeight][{\dimexpr\paperheight + 2\measure{Bleed}\relax}]
> \definemeasure[MaxWidth][{\dimexpr\paperwidth + 2\measure{Bleed}\relax}]
> 
> \definelayer[papier][
>  preset=lefttop,
>  %x=0mm,y=0mm,
>  width=\paperwidth,
>  height=\paperheight,
> ]
> \setupbackgrounds[paper][background=cover,state=start]
> 
> 
> \starttext
> \showframe
> TEST
> 
> \setlayerframed[papier][
>  preset=lefttop,
>  %x=-\measure{Bleed},
>  %y=-\measure{Bleed},
>  offset=overlay,
>  %frame=off,
>  width=\measure{MaxWidth},
>  height=\measure{MaxHeight},
> ]{\externalfigure[dummy][
>  width=\measure{MaxWidth},height=\measure{MaxHeight}
> ]}
> 
> \flushlayer[papier]
> 
> \stoptext
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________

___________________________________________________________________________________
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
___________________________________________________________________________________

Re: placing (on) layers

[Henning Hraban Ramm via ntg-context]

Hi Willi,

thank you, I wasn’t aware that \flushlayer works this way. This was also 
the problem in my real project.

And I had the wrong layer mentioned in \setupbackgrounds from another test.
Also, cropoffset was interfering in the real project, see my other mail.

Hraban

Am 16.04.22 um 22:27 schrieb Willi Egger via ntg-context:
> Hi Hraban,
> 
> if you flush a layer like in your example, then the layer is attached to the left top of the text area. If you want to place it in another place, you will have to move it by x and y dimensions to the right place in the first brackets of the \setlayerframed command . — What would be possible is to attach the layer as a background to one of the different areas of the  paper.
> 
> I hope this gives you a hint how to proceed..
> 
> Willi
> 
>> On 15 Apr 2022, at 21:51, Henning Hraban Ramm via ntg-context <ntg-context@ntg.nl> wrote:
>>
>> Hi again,
>>
>> I’m always struggling with putting stuff on layers, since these just never start where I’d expect them to, and the offsets changed a few times within the last years.
>>
>> Please explain how I should define a layer that covers the whole page, since the following MWE is wrong (the layer always starts below the first line):
>>
>>
>> \useMPlibrary[dum]
>>
>> \setuppapersize[A5][A4]
>> \setuplayout[
>>   marking=on,
>>   location=middle,
>> ]
>> \definemeasure[Bleed][3mm]
>> \definemeasure[MaxHeight][{\dimexpr\paperheight + 2\measure{Bleed}\relax}]
>> \definemeasure[MaxWidth][{\dimexpr\paperwidth + 2\measure{Bleed}\relax}]
>>
>> \definelayer[papier][
>>   preset=lefttop,
>>   %x=0mm,y=0mm,
>>   width=\paperwidth,
>>   height=\paperheight,
>> ]
>> \setupbackgrounds[paper][background=cover,state=start]
>>
>>
>> \starttext
>> \showframe
>> TEST
>>
>> \setlayerframed[papier][
>>   preset=lefttop,
>>   %x=-\measure{Bleed},
>>   %y=-\measure{Bleed},
>>   offset=overlay,
>>   %frame=off,
>>   width=\measure{MaxWidth},
>>   height=\measure{MaxHeight},
>> ]{\externalfigure[dummy][
>>   width=\measure{MaxWidth},height=\measure{MaxHeight}
>> ]}
>>
>> \flushlayer[papier]
>>
>> \stoptext
>> ___________________________________________________________________________________
>> 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
>> ___________________________________________________________________________________
> 
> ___________________________________________________________________________________
> 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
> ___________________________________________________________________________________

___________________________________________________________________________________
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
___________________________________________________________________________________

Re: placing (on) layers

[Pablo Rodriguez via ntg-context]

On 4/15/22 21:51, Henning Hraban Ramm via ntg-context wrote:
> Hi again,
>
> I’m always struggling with putting stuff on layers, since these just
> never start where I’d expect them to, and the offsets changed a few
> times within the last years.
>
> Please explain how I should define a layer that covers the whole page,
> since the following MWE is wrong (the layer always starts below the
> first line):

Hi Hraban,

slightly modifying your MWE, I think I get what might fit your needs
(see below).

I never used \flushlayer and your sample shows that it doesn’t fit here.

The layer is relative to the page, not to the paper in this case.

And the state is an option for the layer (in \definelayer), not for the
background, being "start" its default value.

Just in case it might help,

Pablo

  \setupexternalfigures
     [location={default,global}]

  \setuppapersize[A5][A4]
  \setuplayout[
     marking=on,
     location=middle,
  ]
  \definemeasure[Bleed][3mm]
  \definemeasure[MaxHeight]
      [{\dimexpr\paperheight + 2\measure{Bleed}\relax}]
  \definemeasure[MaxWidth]
      [{\dimexpr\paperwidth + 2\measure{Bleed}\relax}]

  \definelayer[papier][
     preset=lefttop,
     %x=0mm,y=0mm,
     width=\paperwidth,
     height=\paperheight,
  ]
  \setupbackgrounds[page][background=papier]

  \starttext
  \showframe
  TEST

  \setlayerframed[papier][
     preset=lefttop,
     %x=-\measure{Bleed},
     %y=-\measure{Bleed},
     offset=overlay,
     %frame=off,
     width=\measure{MaxWidth},
     height=\measure{MaxHeight},
  ]{\externalfigure[cow][
     width=\measure{MaxWidth},height=\measure{MaxHeight}
  ]}

  \stoptext
___________________________________________________________________________________
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
___________________________________________________________________________________