\vfill shifts content off grid

\vfill shifts content off grid

[Henri Menke]

Dear list,

when I use a body font size other than the standard, issuing \vfill will move the content off the grid.  MWE is below.  How do I fix this?

Cheers, Henri

---

\setupbodyfont[9pt]
\setuplayout[grid=yes]
\showgrid
\starttext
Hello

\vfill

World
\stoptext
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___________________________________________________________________________________

Re: \vfill shifts content off grid

[Hans Hagen]

On 8/31/2016 7:45 PM, Henri Menke wrote:
> Dear list,
>
> when I use a body font size other than the standard, issuing \vfill will move the content off the grid.  MWE is below.  How do I fix this?

that's how vfill works, you can try \vskip30\lineheight with a value you 
like

> Cheers, Henri
>
> ---
>
> \setupbodyfont[9pt]
> \setuplayout[grid=yes]
> \showgrid
> \starttext
> Hello
>
> \vfill
>
> World
> \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://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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: \vfill shifts content off grid

[Henri Menke]

On 09/01/2016 09:33 AM, Hans Hagen wrote:
> On 8/31/2016 7:45 PM, Henri Menke wrote:
>> Dear list,
>>
>> when I use a body font size other than the standard, issuing \vfill will move the content off the grid.  MWE is below.  How do I fix this?
> 
> that's how vfill works, you can try \vskip30\lineheight with a value you like

Hm.  Then I'd like to reformulate my question:  How do I flush content to the bottom of the page when grid is enabled without having to specific how many lines to clear.

> 
>> Cheers, Henri
>>
>> ---
>>
>> \setupbodyfont[9pt]
>> \setuplayout[grid=yes]
>> \showgrid
>> \starttext
>> Hello
>>
>> \vfill
>>
>> World
>> \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://tex.aanhet.net
>> archive  : http://foundry.supelec.fr/projects/contextrev/
>> 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://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \vfill shifts content off grid

[Hans Hagen]

On 9/1/2016 1:22 PM, Henri Menke wrote:
> On 09/01/2016 09:33 AM, Hans Hagen wrote:
>> On 8/31/2016 7:45 PM, Henri Menke wrote:
>>> Dear list,
>>>
>>> when I use a body font size other than the standard, issuing \vfill will move the content off the grid.  MWE is below.  How do I fix this?
>>
>> that's how vfill works, you can try \vskip30\lineheight with a value you like
>
> Hm.  Then I'd like to reformulate my question:  How do I flush content to the bottom of the page when grid is enabled without having to specific how many lines to clear.

trial and error:

\vfilll \strut World \par \removedepth \page


>>
>>> Cheers, Henri
>>>
>>> ---
>>>
>>> \setupbodyfont[9pt]
>>> \setuplayout[grid=yes]
>>> \showgrid
>>> \starttext
>>> Hello
>>>
>>> \vfill
>>>
>>> World
>>> \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://tex.aanhet.net
>>> archive  : http://foundry.supelec.fr/projects/contextrev/
>>> 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://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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: \vfill shifts content off grid

[Henri Menke]

On 09/01/2016 01:53 PM, Hans Hagen wrote:
> On 9/1/2016 1:22 PM, Henri Menke wrote:
>> On 09/01/2016 09:33 AM, Hans Hagen wrote:
>>> On 8/31/2016 7:45 PM, Henri Menke wrote:
>>>> Dear list,
>>>>
>>>> when I use a body font size other than the standard, issuing \vfill will move the content off the grid.  MWE is below.  How do I fix this?
>>>
>>> that's how vfill works, you can try \vskip30\lineheight with a value you like
>>
>> Hm.  Then I'd like to reformulate my question:  How do I flush content to the bottom of the page when grid is enabled without having to specific how many lines to clear.
> 
> trial and error:
> 
> \vfilll \strut World \par \removedepth \page

This is not very satisfactory because it does not work unconditionally.  For instance with lucidaot it is still shifted off the grid.

\setupbodyfont[lucidaot,9pt]
\setuplayout[grid=yes]
\showgrid
\starttext
Hello

\vfill

World\strut\par\removedepth
\stoptext

I have come up with this other really hackish solution.  I just put the text on a layer and align this to the last line of the grid which I previously computed in Lua (Brrr).  Also, this has the disadvantage that text might flow into the layer (it's in the background).

\setupbodyfont[9pt]
\setuplayout[grid=yes]
\showgrid

\definelayer [flushbottom]
\setupbackgrounds [text] [background=flushbottom]
\edef\numberoflines{%
  \ctxlua{context(math.round(tex.dimen.textheight / tex.dimen.lineheight))}}

\starttext
Hello

\setlayer
  [flushbottom]
  [line=\numberoflines,location=grid]
  {World}
\stoptext

Is there really no way to have grid-consistent \vfill?  If there isn't please consider this a feature request.

> 
> 
>>>
>>>> Cheers, Henri
>>>>
>>>> ---
>>>>
>>>> \setupbodyfont[9pt]
>>>> \setuplayout[grid=yes]
>>>> \showgrid
>>>> \starttext
>>>> Hello
>>>>
>>>> \vfill
>>>>
>>>> World
>>>> \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://tex.aanhet.net
>>>> archive  : http://foundry.supelec.fr/projects/contextrev/
>>>> 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://tex.aanhet.net
>> archive  : http://foundry.supelec.fr/projects/contextrev/
>> 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://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: \vfill shifts content off grid

[Hans Hagen]

On 9/1/2016 2:18 PM, Henri Menke wrote:
> On 09/01/2016 01:53 PM, Hans Hagen wrote:
>> On 9/1/2016 1:22 PM, Henri Menke wrote:
>>> On 09/01/2016 09:33 AM, Hans Hagen wrote:
>>>> On 8/31/2016 7:45 PM, Henri Menke wrote:
>>>>> Dear list,
>>>>>
>>>>> when I use a body font size other than the standard, issuing \vfill will move the content off the grid.  MWE is below.  How do I fix this?
>>>>
>>>> that's how vfill works, you can try \vskip30\lineheight with a value you like
>>>
>>> Hm.  Then I'd like to reformulate my question:  How do I flush content to the bottom of the page when grid is enabled without having to specific how many lines to clear.
>>
>> trial and error:
>>
>> \vfilll \strut World \par \removedepth \page
>
> This is not very satisfactory because it does not work unconditionally.  For instance with lucidaot it is still shifted off the grid.
>
> \setupbodyfont[lucidaot,9pt]
> \setuplayout[grid=yes]
> \showgrid
> \starttext
> Hello
>
> \vfill
>
> World\strut\par\removedepth
> \stoptext
>
> I have come up with this other really hackish solution.  I just put the text on a layer and align this to the last line of the grid which I previously computed in Lua (Brrr).  Also, this has the disadvantage that text might flow into the layer (it's in the background).
>
> \setupbodyfont[9pt]
> \setuplayout[grid=yes]
> \showgrid
>
> \definelayer [flushbottom]
> \setupbackgrounds [text] [background=flushbottom]
> \edef\numberoflines{%
>   \ctxlua{context(math.round(tex.dimen.textheight / tex.dimen.lineheight))}}
>
> \starttext
> Hello
>
> \setlayer
>   [flushbottom]
>   [line=\numberoflines,location=grid]
>   {World}
> \stoptext
>
> Is there really no way to have grid-consistent \vfill?  If there isn't please consider this a feature request.

not without some explicit support for it which currently is not there

     \startstandardmakeup[top=,bottom=]
         \strut Hello
         \vss
         \dontleavehmode\raise3\lineheight\hbox{\strut World}
     \stopstandardmakeup



>>
>>
>>>>
>>>>> Cheers, Henri
>>>>>
>>>>> ---
>>>>>
>>>>> \setupbodyfont[9pt]
>>>>> \setuplayout[grid=yes]
>>>>> \showgrid
>>>>> \starttext
>>>>> Hello
>>>>>
>>>>> \vfill
>>>>>
>>>>> World
>>>>> \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://tex.aanhet.net
>>>>> archive  : http://foundry.supelec.fr/projects/contextrev/
>>>>> 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://tex.aanhet.net
>>> archive  : http://foundry.supelec.fr/projects/contextrev/
>>> 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://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>


-- 

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
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: \vfill shifts content off grid

[Wolfgang Schuster]

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> Henri Menke <mailto:henrimenke@gmail.com>
> 31. August 2016 um 19:45
> Dear list,
>
> when I use a body font size other than the standard, issuing \vfill 
> will move the content off the grid. MWE is below. How do I fix this?
>
> Cheers, Henri
>
> ---
>
> \setupbodyfont[9pt]
> \setuplayout[grid=yes]
> \showgrid
> \starttext
> Hello
>
> \vfill
>
> World
> \stoptext

You can calculate the number of lines which have to be inserted to move 
the text
to the bottom of the text. The first step for this is to put the text 
which should be
moved into a \vbox which allows paragraphs and not only short texts. 
Afterwards
you can determine how much space is left on the page and with the 
\getnoflines
command you get the number of lines for the free space.

%%%% begin example
\define\MoveToBottom
   {\par
    \dowithnextbox
      
{\scratchdimen\dimexpr\pagegoal-\pagetotal-\nextboxht-\lineheight\relax
       \getnoflines\scratchdimen
       \emptylines[\number\noflines]%
       \flushnextbox}
      \vbox}

\setuplayout[grid=yes]

\showgrid

\starttext

Hello

\MoveToBottom{World}

\page

\input knuth

\MoveToBottom{\input ward }

\stoptext
%%%% end example

Wolfgang

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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
___________________________________________________________________________________