Figures are misplaced with \pagedir TRT\bodydir TRT

Figures are misplaced with \pagedir TRT\bodydir TRT

[Khaled Hosny]

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Figures are shifted to the right (the left edge is where right edge
should) when I set \pagedir TRT\bodydir TRT.

See the attached example.

-- 
 Khaled Hosny
 Arabic localizer and member of Arabeyes.org team

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\pagedir TRT\bodydir TRT

\useexternalfigure
  [Mill]
  [mill]

\starttext
\placefigure
  [here,force]
  [fig:Mill]
  {Test.}
  {\externalfigure[Mill]}

\stoptext

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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Khaled Hosny]

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On Tue, Sep 02, 2008 at 08:33:50PM +0200, Khaled Hosny wrote:
> Figures are shifted to the right (the left edge is where right edge
> should) when I set \pagedir TRT\bodydir TRT.
> 
> See the attached example.

When I make the figure \framed the frame gets in the prober place, but
not the image, may be this is a LuaTeX bug?


-- 
 Khaled Hosny
 Arabic localizer and member of Arabeyes.org team

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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Khaled Hosny]

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On Tue, Sep 02, 2008 at 10:50:23PM +0200, Khaled Hosny wrote:
> On Tue, Sep 02, 2008 at 08:33:50PM +0200, Khaled Hosny wrote:
> > Figures are shifted to the right (the left edge is where right edge
> > should) when I set \pagedir TRT\bodydir TRT.
> > 
> > See the attached example.
> 
> When I make the figure \framed the frame gets in the prober place, but
> not the image, may be this is a LuaTeX bug?

It looks like a bug inherited from omega.
I can reproduce a similar reselut with this plain tex file:

\textdir TRT
\input epsf

\epsfbox{fig.eps}\input knuth

\bye

and it gives the same result with luatex and aleph (and even with omega).
Is this a known bug?

-- 
 Khaled Hosny
 Arabic localizer and member of Arabeyes.org team

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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Hans Hagen]

Khaled Hosny wrote:
> On Tue, Sep 02, 2008 at 10:50:23PM +0200, Khaled Hosny wrote:
>> On Tue, Sep 02, 2008 at 08:33:50PM +0200, Khaled Hosny wrote:
>>> Figures are shifted to the right (the left edge is where right edge
>>> should) when I set \pagedir TRT\bodydir TRT.
>>>
>>> See the attached example.
>> When I make the figure \framed the frame gets in the prober place, but
>> not the image, may be this is a LuaTeX bug?
> 
> It looks like a bug inherited from omega.
> I can reproduce a similar reselut with this plain tex file:
> 
> \textdir TRT
> \input epsf
> 
> \epsfbox{fig.eps}\input knuth
> 
> \bye
> 
> and it gives the same result with luatex and aleph (and even with omega).
> Is this a known bug?

no, it might be related to rlap/llap kind of situations; i'll look into 
it later

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                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Hans Hagen]

Khaled Hosny wrote:
> Figures are shifted to the right (the left edge is where right edge
> should) when I set \pagedir TRT\bodydir TRT.

\pagedir TRT \bodydir TRT

\setupheadertexts[from left to right]

\starttext

\input tufte

\placefigure
   [here,force]
   [fig:Mill]
   {Test.}
   {\externalfigure[mill]}

\input tufte

\stoptext

i'm wondering ... why do we need pagedir and bodydir?

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Idris Samawi Hamid ادريس سماوي حامد]

On Tue, 02 Sep 2008 15:58:21 -0600, Hans Hagen <pragma@wxs.nl> wrote:

> i'm wondering ... why do we need pagedir and bodydir?

=========
http://www.ctan.org/tex-archive/systems/omega/

\pagedir  The direction for pages (\shipout).
\bodydir  The direction for vboxes, including the main body of text.
=========

Think of footnote numerals etc. IIRC: Without \pagedir TRT\bodydir TRT the  
footnote numerals will appear on the left despite \pardir and \textdir.

I still don't completely _separately_ understand \pagedir TRT\bodydir TRT,  
but together they seem to make sense to me. Taco once started explainig  
these two to Hans and I a few months back but that thread was never  
completed... I'll look up where we left things off.

Best wishes
Idris

-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523
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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Idris Samawi Hamid ادريس سماوي حامد]

On Tue, 02 Sep 2008 15:58:21 -0600, Hans Hagen <pragma@wxs.nl> wrote:

> Khaled Hosny wrote:
>> Figures are shifted to the right (the left edge is where right edge
>> should) when I set \pagedir TRT\bodydir TRT.
>
> \pagedir TRT \bodydir TRT
>
> \setupheadertexts[from left to right]
>
> \starttext
>
> \input tufte
>
> \placefigure
>    [here,force]
>    [fig:Mill]
>    {Test.}
>    {\externalfigure[mill]}
>
> \input tufte
>
> \stoptext
>
> i'm wondering ... why do we need pagedir and bodydir?

Try this one, and play with commenting lines 1 or 2:

\pagedir TRT \bodydir TRT
\pardir TRT \textdir TRT

\setupheadertexts[from left to right]

\starttext

\input tufte\footnote{\input ward }

\placefigure
    [here,force]
    [fig:Mill]
    {Test.}
    {\externalfigure[mill]}

\input tufte\footnote{\input ward }

\stoptext

As to the original problem:

\textdir TRT
\input epsf

\epsfbox{fig.eps}\input knuth

\bye

I don't think this is an omega/aleph/luatex bug, but rather that epsf.tex  
does not take the global direction change into account. It seems that, for  
any figure mechanism in TeX, the coordinates of the figure need to be  
vertically reversed when
\pagedir TRT \bodydir TRT
in effect.

Best wishes
Idris


-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523
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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Khaled Hosny]

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On Tue, Sep 02, 2008 at 06:11:57PM -0600, Idris Samawi Hamid ادريس سماوي حامد wrote:
> As to the original problem:
> 
> \textdir TRT
> \input epsf
> 
> \epsfbox{fig.eps}\input knuth
> 
> \bye
> 
> I don't think this is an omega/aleph/luatex bug, but rather that epsf.tex  
> does not take the global direction change into account. It seems that, for  
> any figure mechanism in TeX, the coordinates of the figure need to be  
> vertically reversed when
> \pagedir TRT \bodydir TRT
> in effect.

I think I got the idea now (and this explains why the frame gets right).

-- 
 Khaled Hosny
 Arabic localizer and member of Arabeyes.org team

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___________________________________________________________________________________

Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Hans Hagen]

Idris Samawi Hamid ادريس سماوي حامد wrote:
> On Tue, 02 Sep 2008 15:58:21 -0600, Hans Hagen <pragma@wxs.nl> wrote:
> 
>> i'm wondering ... why do we need pagedir and bodydir?
> 
> =========
> http://www.ctan.org/tex-archive/systems/omega/
> 
> \pagedir  The direction for pages (\shipout).
> \bodydir  The direction for vboxes, including the main body of text.
> =========
> 
> Think of footnote numerals etc. IIRC: Without \pagedir TRT\bodydir TRT the  
> footnote numerals will appear on the left despite \pardir and \textdir.
> 
> I still don't completely _separately_ understand \pagedir TRT\bodydir TRT,  
> but together they seem to make sense to me. Taco once started explainig  
> these two to Hans and I a few months back but that thread was never  
> completed... I'll look up where we left things off.

among the pending issues was 'where do we explicitly need to set it and 
when do we need to compensate for it'

for some reason inserts (the figure) are sensitive to it and it might be 
some interference as well as a missing explicit dir reversal

[omega provides these mechanisms but i think that there was never a full 
blown macro package using them, i.e. mixed direction support and such; 
there might be many places where we need to add dir-checking code to 
context; a few places already have it]


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Hans Hagen]

Khaled Hosny wrote:
> On Tue, Sep 02, 2008 at 08:33:50PM +0200, Khaled Hosny wrote:
>> Figures are shifted to the right (the left edge is where right edge
>> should) when I set \pagedir TRT\bodydir TRT.
>>
>> See the attached example.
> 
> When I make the figure \framed the frame gets in the prober place, but
> not the image, may be this is a LuaTeX bug?

we need to look into it next week (when taco is back from vacation) 
because it might as well be some problem in luatex itself (when/where 
inject those dir nodes)


-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Hans Hagen]

Idris Samawi Hamid ادريس سماوي حامد wrote:
> On Tue, 02 Sep 2008 15:58:21 -0600, Hans Hagen <pragma@wxs.nl> wrote:
> 
>> i'm wondering ... why do we need pagedir and bodydir?
> 
> =========
> http://www.ctan.org/tex-archive/systems/omega/
> 
> \pagedir  The direction for pages (\shipout).
> \bodydir  The direction for vboxes, including the main body of text.
> =========
> 
> Think of footnote numerals etc. IIRC: Without \pagedir TRT\bodydir TRT the  
> footnote numerals will appear on the left despite \pardir and \textdir.

sure, but we might as well deal with them in a special r-l aware mode 
(probably easier)

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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Re: Figures are misplaced with \pagedir TRT\bodydir TRT

[Khaled Hosny]

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On Tue, Sep 02, 2008 at 08:33:50PM +0200, Khaled Hosny wrote:
> Figures are shifted to the right (the left edge is where right edge
> should) when I set \pagedir TRT\bodydir TRT.

This my not be an optimum solution, but putting \externalfigure inside
an hbox with TLT direction gets the figure in the correct position:

\placefigure[][]{}{\hbox dir TLT\externalfigure[mill]}}

Regards,


-- 
 Khaled Hosny
 Arabic localizer and member of Arabeyes.org team

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