Issue with grid

Issue with grid

[Joseph]

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Re: Issue with grid

[Pablo Rodriguez]

On 11/22/20 5:03 PM, Joseph wrote:
> Dear list,
>
> In some cases with latest LMTX I see text not aligned to grid. MWE
> reproduces the problem (could not reproduce with default font).

Hi Joseph,

I think this is related to the fact that your paragraphs are hard to
break between pages, since they only contain two lines.

I think this paragraph break among pages is what triggers the issue you
mention.

> Typesetting MWE using online ConTeXt page shows correctly aligned text
> on grid.

https://live.contextgarden.net/ includes both LuaTeX 2.06 20200630 +
ConTeXt MkIV 2020.06.30 17:30.

> If number of itérations is changed from 8 to 7) problem does not appear,
> seems to be linked to the fact page is fully filled with lines.

Because the text fits in a single page.

> If one of the \blank lines is commented out problem does not occur either.

Because you avoid the problem of breaking the paragraph between pages.

You can also avoid that using the following (but it will work only with
your MWE, I know):

  \setuplayout[setups=*lessstrict]
  \startsetups[*lessstrict]
      \widowpenalty=1000
      \clubpenalty=1000
      \brokenpenalty=1000
  \stopsetups

  \setuplayout[setups={*lessstrict}]

  \showgrid

I think that the problem might be related to the (unsuccesful) avoidance
of orphans and widows in current latest.

But of course, Hans or Wolfgang know better.

Just in case it might help,

Pablo
--
http://www.ousia.tk
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RE : Issue with grid

[Joseph]

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Re: Issue with grid

[Hans Hagen]

On 11/22/2020 5:03 PM, Joseph wrote:
> Dear list,
> 
> In some cases with latest LMTX I see text not aligned to grid. MWE 
> reproduces the problem (could not reproduce with default font).
> 
> Typesetting MWE using online ConTeXt page shows correctly aligned text 
> on grid.
> 
> \showgrid
> 
> \setuplayout[grid=both]
> 
> \definefontfeature[base][mode=node]
> 
> \definefontfamily[mainfont][serif][EBGaramond][features=base]
> 
> \setupbodyfont[mainfont, 9pt]
> 
> \starttext
> 
> \blank[line, samepage]Fin des psalmes.
> 
> \blank[line, samepage]Fin des psalmes.
> 
> \dorecurse{8}{\input knuth
> 
> }
> 
> \stoptext
> 
> If number of itérations is changed from 8 to 7) problem does not appear, 
> seems to be linked to the fact page is fully filled with lines.
> 
> If one of the \blank lines is commented out problem does not occur either.

It might have to do with the fact that the height/depth ratio that is 
used doesn't match well with the ascenders/descenders of the font that 
you use. The defaults are:

\setupinterlinespace
   [height=.72,
    depth=.28,
    line=2.8\exheight]

so you can play with these. The 72:28 ratio works ok for most fonts but 
sometimes need to be adapted. Sometimes the 2.8 is not enough.

(makes me wonder: i can issue a warning when a font can overrun)

(normally grid snapping should catch is but columns are kind of different)

Hans


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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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RE : Issue with grid

[Joseph]

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Re: RE : Issue with grid

[Hans Hagen]

On 11/23/2020 9:31 AM, Joseph wrote:
> I don’t understand the answer I am afraid, I’ve never seen any issue 
> with grid alignment before (I don’t use columns either, and I changed 
> nothing at all).
you talk about grid alignment i.e. text not sitting on the grid ... this 
is something that relates to font and line distance properties

if on th eother hand you talk about when a pag ebreak occurs pablos 
answer points to the solution

Hans


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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RE : RE : Issue with grid

[Joseph]

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Re: RE : RE : Issue with grid

[Hans Hagen]

On 11/23/2020 11:13 AM, Joseph wrote:
> Yes, I refer to text not being aligned on the grid. This only happens if 
> \blank is used it seems, and text sits above where it’s supposed to (ie 
> amount of space being skipped vertically is smaller, ie \blank[line] 
> skips less than 1 line). I attach pdf I get. Could reduce MWE a bit.
> 
> \showgrid
> 
> \setuplayout[grid=both]
> 
> \definefontfamily[mainfont][serif][EBGaramond][features=default]
> 
> \setupbodyfont[mainfont, 9pt]
> 
> \starttext
> 
> \blank[line]Fin des psalmes.
> 
> \blank[line]Fin des psalmes.
> 
> \dorecurse{8}{\input knuth
> 
> }
> 
> \stoptext
It looks ok here< I also checked the latest eb (less fonts now it seems).

Hans


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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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RE : RE : RE : Issue with grid

[Joseph]

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Re: RE : RE : RE : Issue with grid

[Pablo Rodriguez]

On 11/23/20 4:29 PM, Joseph wrote:
> Could reproduce this problem with ‘default’ font and even seeing it
> cumulating in same page. BTW, Perhaps you already fixed it locally.

Hi Joseph,

probably the approach has to be different.

Setting the whitespace to line fixes everything:

  \startsetups[*lessstrict]
      \widowpenalty=1000
      \clubpenalty=1000
      \brokenpenalty=1000
  \stopsetups

  \setuplayout[setups={*lessstrict}, grid=both]

  \showgrid

  \setupwhitespace[line]

  \starttext

  \dorecurse{8}
    {\blank[line]Fin des psalmes.\par
     \blank[line]\input knuth\par}

  \stoptext

Just in case it helps,

Pablo
--
http://www.ousia.tk
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RE : RE : RE : RE : Issue with grid

[Joseph]

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Re: RE : RE : RE : RE : Issue with grid

[Hans Hagen]

On 11/25/2020 6:10 PM, Joseph wrote:
> \setupindenting[yes, next, 1em]
> 
> \starttext
> 
> \input knuth
> 
> \stoptext
hm, maybe i did somethign wrong. i'll check it, but indeed for now you 
can just use the patch

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
        tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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Re: Issue with grid

[Hans Hagen]

On 11/22/2020 5:03 PM, Joseph wrote:

> \definefontfeature[base][mode=node]
> 
> \definefontfamily[mainfont][serif][EBGaramond][features=base]
Really? No features enabled at all? EBGaramond is quite loaded with 
features. Just use 'default'.

Hans

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