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            <54C62ADA.7090308@morningstar2.co.uk>
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Message-ID:  <20150126125712.GB15138@hzdr.de>
Date:         Mon, 26 Jan 2015 13:57:13 +0100
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From: Alexander Grahn <A.Grahn@HZDR.DE>
Subject: Re: \box_resize_to_ht:Nn (bug report)
To: LATEX-L@LISTSERV.UNI-HEIDELBERG.DE
In-Reply-To:  <54C62ADA.7090308@morningstar2.co.uk>
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Envelope-To: <rainer.schoepf@GMX.NET>
Status: R

On Mon, Jan 26, 2015 at 11:54:02AM +0000, Joseph Wright wrote:
>On 26/01/2015 09:55, Alexander Grahn wrote:
>> Good morning,
>> 
>> I have just noticed that \box_resize_to_ht:Nn forces the given box
>> into a square instead of scaling the width appropriately. The other,
>> \box_resize_to_wd:Nn works as expected as it preserves the original
>> aspect ratio:
>> 
>>   \documentclass{article}
>>   \usepackage{expl3}
>>   \usepackage{graphicx}
>>   \usepackage{mwe}
>>   
>>   \begin{document}
>>   \newsavebox\picbox
>>   \savebox\picbox{\includegraphics{example-image-a}}
>>   
>>   \typeout{orig. size: \the\wd\picbox\space X \the\ht\picbox}
>>   
>>   \ExplSyntaxOn
>>   \box_resize_to_ht:Nn\picbox{60pt}
>>   \ExplSyntaxOff
>>   \typeout{\string\box_resize_to_ht:Nn \the\wd\picbox\space X \the\ht\picbox}
>>   
>>   \savebox\picbox{\includegraphics{example-image-a}}
>>   \ExplSyntaxOn
>>   \box_resize_to_wd:Nn\picbox{60pt}
>>   \ExplSyntaxOff
>>   \typeout{\string\box_resize_to_wd:Nn \the\wd\picbox\space X \the\ht\picbox}
>>   
>>   \end{document}
>> 
>> Kind regards,
>> Alexander
>> 
>
>Logged as #202 (https://github.com/latex3/svn-mirror/issues/202). I see
>where the issue is: fix coming up. Is an 'urgent' release of expl3
>required to deal with this?

Thanks! I think there is no rush with updating expl3. Just keep with the
planned schedule.

>BTW, I assume that the resize functions are useful. Do the current
>interfaces make sense: they are down as 'experimental' but I do wonder
>if they should get moved to 'stable'.

In my opinion the set of \box_resize_* functions is complete, as it allows
for independently resizing width and [total]height (while, if necessary,
making use of \box_[wd|ht]:N for the dimension to keep unchanged), as well
as for resizing one of width or [total]height with preserved aspect ratio.

Thanks a lot for providing the functions! Moving them to stable is up to
your decision.

Kind regards,
Alexander