Spacing between formula and texts

Spacing between formula and texts

[Zhichu Chen]

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Hi,

I happened to review the output of my article and found one thing which is
not perfect for me. The spacing between a formula and its upper texts is not
treated well when I tuned with some indent things. Here is my test file
========================================
\usemodule[units]

\setupindenting[big]
\indenting[always,next]
% no, not, yes, always, never, first, next

% \setupformulas[spacebefore=5em]

\starttext

Blah,
blah, blah, blah, blah, blah, blah, blah, blah,
blah, blah, blah, blah, blah, blah, blah, blah,
blah, blah, blah, blah, blah, blah, blah, blah,
blah, blah, blah, blah, blah, blah, blah, blah,
I love the following formula:
\placeformula[-]
  \startformula
    6.670 \times 10^{-11} \Newton \Times \Square \Meter \Per \Square \Kilo
\Gram
  \stopformula
which is very cool.
which is very cool.
which is very cool.
which is very cool.
which is very cool.

% \showmathcharacters

\stoptext
========================================

I'm really uncomfortable with that, and I want to solve it by myself. When I
looked up the indent macros in core-spa.tex, how complex is that. So I just
hope you guys could help me.

-- 
Best Regards
Chen
----------------------------------------------------------------

          Zhi-chu Chen | Shanghai Synchrotron Radiation Facility
         No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China
             tel: 086 21 5955 3405 | zhichu.chen.googlepages.com
                                               | www.sinap.ac.cn
----------------------------------------------------------------

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___________________________________________________________________________________

Re: Spacing between formula and texts

[Wolfgang Schuster]

On Wed, 19 Sep 2007 23:30:26 +0800
"Zhichu Chen" <zhichu.chen@gmail.com> wrote:

> \usemodule[units]
> 
> \setupindenting[big]
> \indenting[always,next]
> % no, not, yes, always, never, first, next
> 
> % \setupformulas[spacebefore=5em]
> 
> \starttext
> 
> Blah,
> blah, blah, blah, blah, blah, blah, blah, blah,
> blah, blah, blah, blah, blah, blah, blah, blah,
> blah, blah, blah, blah, blah, blah, blah, blah,
> blah, blah, blah, blah, blah, blah, blah, blah,
> I love the following formula:
> \placeformula[-]
>   \startformula
>     6.670 \times 10^{-11} \Newton \Times \Square \Meter \Per \Square \Kilo
> \Gram
>   \stopformula
> which is very cool.
> which is very cool.
> which is very cool.
> which is very cool.
> which is very cool.
> 
> % \showmathcharacters
> 
> \stoptext

Hi Chen,

I can't give a real solution but only a workaround, the problem lies in
the macro \beforedisplayspace which calls \docomplexdoblank which calls
itself \presetindentation and this macro causes your real problem.

You solve this now by placing \let\presetindentation\relax at the begin
in your document or remove the next key for \setupindenting.

This is all what I can do for you in a few minutes, the rest is up to
Hans to make a extra test in \beforedisplay or somewhere else to
disable \preetindentation before a display formula.

Wolfgang
___________________________________________________________________________________
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  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Spacing between formula and texts

[Zhichu Chen]

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Hi Wolfgang,

On 9/20/07, Wolfgang Schuster <schuster.wolfgang@googlemail.com> wrote:
>
> On Wed, 19 Sep 2007 23:30:26 +0800
> "Zhichu Chen" <zhichu.chen@gmail.com> wrote:
>
> > \usemodule[units]
> >
> > \setupindenting[big]
> > \indenting[always,next]
> > % no, not, yes, always, never, first, next
> >
> > % \setupformulas[spacebefore=5em]
> >
> > \starttext
> >
> > Blah,
> > blah, blah, blah, blah, blah, blah, blah, blah,
> > blah, blah, blah, blah, blah, blah, blah, blah,
> > blah, blah, blah, blah, blah, blah, blah, blah,
> > blah, blah, blah, blah, blah, blah, blah, blah,
> > I love the following formula:
> > \placeformula[-]
> >   \startformula
> >     6.670 \times 10^{-11} \Newton \Times \Square \Meter \Per \Square
> \Kilo
> > \Gram
> >   \stopformula
> > which is very cool.
> > which is very cool.
> > which is very cool.
> > which is very cool.
> > which is very cool.
> >
> > % \showmathcharacters
> >
> > \stoptext
>
> Hi Chen,
>
> I can't give a real solution but only a workaround, the problem lies in
> the macro \beforedisplayspace which calls \docomplexdoblank which calls
> itself \presetindentation and this macro causes your real problem.
>
> You solve this now by placing \let\presetindentation\relax at the begin
> in your document or remove the next key for \setupindenting.


Really! It works fine with "first" key. OK, I can just live with that,
although I hope Hans will have time to fix it, it's not so cool with the
first paragraph indented :)

This is all what I can do for you in a few minutes, the rest is up to
> Hans to make a extra test in \beforedisplay or somewhere else to
> disable \preetindentation before a display formula.
>
> Wolfgang
>
> ___________________________________________________________________________________
> 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  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
>
> ___________________________________________________________________________________
>



-- 
Best Regards
Chen
----------------------------------------------------------------

          Zhi-chu Chen | Shanghai Synchrotron Radiation Facility
         No. 2019 | Jialuo Rd. | Jiading | Shanghai | P.R. China
             tel: 086 21 5955 3405 | zhichu.chen.googlepages.com
                                               | www.sinap.ac.cn
----------------------------------------------------------------

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[-- Attachment #2: Type: text/plain, Size: 487 bytes --]

___________________________________________________________________________________
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  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: Spacing between formula and texts

[Wolfgang Schuster]

On Thu, 20 Sep 2007 03:04:20 +0800
"Zhichu Chen" <zhichu.chen@gmail.com> wrote:

> Hi Wolfgang,
> 
> On 9/20/07, Wolfgang Schuster <schuster.wolfgang@googlemail.com> wrote:
> >
> > On Wed, 19 Sep 2007 23:30:26 +0800
> > "Zhichu Chen" <zhichu.chen@gmail.com> wrote:
> >
> > > \usemodule[units]
> > >
> > > \setupindenting[big]
> > > \indenting[always,next]
> > > % no, not, yes, always, never, first, next
> > >
> > > % \setupformulas[spacebefore=5em]
> > >
> > > \starttext
> > >
> > > Blah,
> > > blah, blah, blah, blah, blah, blah, blah, blah,
> > > blah, blah, blah, blah, blah, blah, blah, blah,
> > > blah, blah, blah, blah, blah, blah, blah, blah,
> > > blah, blah, blah, blah, blah, blah, blah, blah,
> > > I love the following formula:
> > > \placeformula[-]
> > >   \startformula
> > >     6.670 \times 10^{-11} \Newton \Times \Square \Meter \Per \Square
> > \Kilo
> > > \Gram
> > >   \stopformula
> > > which is very cool.
> > > which is very cool.
> > > which is very cool.
> > > which is very cool.
> > > which is very cool.
> > >
> > > % \showmathcharacters
> > >
> > > \stoptext
> >
> > Hi Chen,
> >
> > I can't give a real solution but only a workaround, the problem lies in
> > the macro \beforedisplayspace which calls \docomplexdoblank which calls
> > itself \presetindentation and this macro causes your real problem.
> >
> > You solve this now by placing \let\presetindentation\relax at the begin
> > in your document or remove the next key for \setupindenting.
> 
> 
> Really! It works fine with "first" key. OK, I can just live with that,
> although I hope Hans will have time to fix it, it's not so cool with the
> first paragraph indented :)
> 
> This is all what I can do for you in a few minutes, the rest is up to
> > Hans to make a extra test in \beforedisplay or somewhere else to
> > disable \preetindentation before a display formula.
> >
> > Wolfgang

Hi Chen,

you use the following code for the moment (untested):

\newif\ifquicksolution \quicksolutiontrue

\def\beforedisplayspace
  {\doifnot{\formulaparameter\c!spacebefore}\v!none
     {\quicksolutionfalse\blank[\formulaparameter\c!spacebefore]}}

\def\afterdisplayspace
  {\doifnot{\formulaparameter\c!spaceafter }\v!none
    {\blank[\formulaparameter\c!spaceafter ]\quicksolutiontrue}}

\def\presetindentation
  {\doifoutervmode{\ifindentfirstparagraph\else\ifquicksolution\noindentation\fi\fi}}

Wolfgang
___________________________________________________________________________________
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  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________