Images centered on page

Images centered on page

[Vyatcheslav Yatskovsky]

Hello,

How can I center the image on a page? I want images to cover the page completely, and since they have proper size (roughly A4), I only need them to be centered. Now they are stuck to the top, leaving a gap on bottom (and same for left-right).

I have the following script (note my Lua trick to process images in a batch). Image names are "Image00001.png" and so on.


%engine=luatex
\setuplayout
  [footer=0mm, header=0mm,
  topspace=0mm, backspace=0mm,
  leftmargin=0mm, rightmargin=0mm,
  location=middle,
  height=fit, width=fit]

\starttext

\startluacode
  for n = 1, 9 do
    tex.print(string.format("\\externalfigure[Image%05d.png]", n)); 
  end
\stopluacode

\stoptext


Best regards,
Vyatcheslav

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Re: Images centered on page

[Idris Samawi Hamid]

On Fri, 23 Nov 2007 09:55:37 -0700, Vyatcheslav Yatskovsky  
<yatskovsky@gmail.com> wrote:

> Hello,
>
> How can I center the image on a page? I want images to cover the page  
> completely, and since they have proper size (roughly A4), I only need  
> them to be centered. Now they are stuck to the top, leaving a gap on  
> bottom (and same for left-right).

Did you try display mode? \vfill <arg> \vfill? I guess I don't see the  
complication... :-)

Best
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: Images centered on page

[Vyatcheslav Yatskovsky]

Hello Idris,

Thank you. 

What is "display mode"?  Simply 

\vfill\externalfigure[Image00001.jpg]\vfill

doesn't work for me.


-- 
Best regards,
Vyatcheslav Yatskovsky


>> Hello,

>> How can I center the image on a page? I want images to cover the page  
>> completely, and since they have proper size (roughly A4), I only need  
>> them to be centered. Now they are stuck to the top, leaving a gap on  
>> bottom (and same for left-right).

> Did you try display mode? \vfill <arg> \vfill? I guess I don't see the
> complication...  

> Best
> Idris

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Re: Images centered on page

[luigi scarso]

On Nov 23, 2007 6:24 PM, Vyatcheslav Yatskovsky <yatskovsky@gmail.com> wrote:
> Hello Idris,
>
> Thank you.
>
> What is "display mode"?  Simply
>
> \vfill\externalfigure[Image00001.jpg]\vfill
>
\vbox to \textheight{\vfill\vskip1sp\externalfigure[Image00001.jpg]\vskip1sp\vfill}




-- 
luigi
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Re: Images centered on page

[Idris Samawi Hamid]

On Fri, 23 Nov 2007 10:31:08 -0700, luigi scarso <luigi.scarso@gmail.com>  
wrote:

> On Nov 23, 2007 6:24 PM, Vyatcheslav Yatskovsky <yatskovsky@gmail.com>  
> wrote:
>> Hello Idris,
>>
>> Thank you.
>>
>> What is "display mode"?  Simply
>>
>> \vfill\externalfigure[Image00001.jpg]\vfill
>>
> \vbox to  
> \textheight{\vfill\vskip1sp\externalfigure[Image00001.jpg]\vskip1sp\vfill}

Alternatively, \vfill + display mode

\leavevmode\vfill$$\externalfigure[cow.pdf]$$\vfill

:-)

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: Images centered on page

[Idris Samawi Hamid]

On Fri, 23 Nov 2007 10:24:35 -0700, Vyatcheslav Yatskovsky  
<yatskovsky@gmail.com> wrote:

> Hello Idris,
>
> Thank you.
>
> What is "display mode"?  Simply
>
> \vfill\externalfigure[Image00001.jpg]\vfill
>
> doesn't work for me.

Try $$<arg>$$.

I'm sure there's a ConTeXt-ish solution for this as well (in addition to  
luigi's solution), can't check at the moment... Where are you, Wolfgang?

Best
Idris

-- 
Professor Idris Samawi Hamid, Editor-in-Chief
International Journal of Shi`i Studies
Department of Philosophy
Colorado State University
Fort Collins, CO 80523

--
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
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Re: Images centered on page

[Peter Münster]

On Fri, 23 Nov 2007, Vyatcheslav Yatskovsky wrote:

> How can I center the image on a page?

\setuplayout[page]
\starttext
\startstandardmakeup
\startalignment[middle]
\dontleavehmode
\externalfigure[image.png]
\stopalignment
\stopstandardmakeup
\stoptext

Cheers, Peter

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Re: Images centered on page

[Idris Samawi Hamid]

On Fri, 23 Nov 2007 10:46:16 -0700, Peter Münster <pmlists@free.fr> wrote:

> On Fri, 23 Nov 2007, Vyatcheslav Yatskovsky wrote:
>
>> How can I center the image on a page?
>
> \setuplayout[page]
> \starttext
> \startstandardmakeup
> \startalignment[middle]
> \dontleavehmode
> \externalfigure[image.png]
> \stopalignment
> \stopstandardmakeup
> \stoptext

Yes! Now let's make it even simpler:

\starttext
\startstandardmakeup
\midaligned{\externalfigure[cow.pdf]}
\stopstandardmakeup
\stoptext

Best
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: Images centered on page

[Wolfgang Schuster]

On Fri, 23 Nov 2007 18:55:37 +0200
Vyatcheslav Yatskovsky <yatskovsky@gmail.com> wrote:

> Hello,
> 
> How can I center the image on a page? I want images to cover the page completely, and since they have proper size (roughly A4), I only need them to be centered. Now they are stuck to the top, leaving a gap on bottom (and same for left-right).
> 
> I have the following script (note my Lua trick to process images in a batch). Image names are "Image00001.png" and so on.
> 
> 
> %engine=luatex
> \setuplayout
>   [footer=0mm, header=0mm,
>   topspace=0mm, backspace=0mm,
>   leftmargin=0mm, rightmargin=0mm,
>   location=middle,
>   height=fit, width=fit]
> 
> \starttext
> 
> \startluacode
>   for n = 1, 9 do
>     tex.print(string.format("\\externalfigure[Image%05d.png]", n)); 
>   end
> \stopluacode
> 
> \stoptext

\def\fivedigits#1%
  {\ifnum#1<10000 0\ifnum#1<1000 0\ifnum#1<100 0\ifnum#1<10 0\fi\fi\fi
\fi\number#1}

\dorecurse{9}
  {\startTEXpage[width=210mm,height=297mm]
   \centeredbox{\externalfigure[Image-\fivedigits\recurselevel]}
   \stopTEXpage}

Wolfgang
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___________________________________________________________________________________

Re: Images centered on page

[Wolfgang Schuster]

2007/11/23, Vyatcheslav Yatskovsky <yatskovsky@gmail.com>:
> Hello,
>
> How can I center the image on a page? I want images to cover the page completely, and since they have proper size (roughly A4), I only need them to be centered. Now they are stuck to the top, leaving a gap on bottom (and same for left-right).
>
> I have the following script (note my Lua trick to process images in a batch). Image names are "Image00001.png" and so on.
>
>
> %engine=luatex
> \setuplayout
>   [footer=0mm, header=0mm,
>   topspace=0mm, backspace=0mm,
>   leftmargin=0mm, rightmargin=0mm,
>   location=middle,
>   height=fit, width=fit]
>
> \starttext
>
> \startluacode
>   for n = 1, 9 do
>     tex.print(string.format("\\externalfigure[Image%05d.png]", n));
>   end
> \stopluacode
>
> \stoptext

your mail remind me to something I wanted a long time ago but I was now
motivated enough to write it. Below is solution to fit a given image to
a page with the normal width and height but remove parts at the top and
bottom or left and right if the width height relation is different from
the one of the document.

I think Hans would be ablo to write a better solution but this all I
can do by myself at the moment.

\unprotect

\def\fullpagebox
  {\bgroup
   \dowithnextbox
     {\!!widtha\dimexpr\paperwidth/\nextboxwd\relax
      \!!widthb\dimexpr\paperheight/\nextboxht\relax
      \ifdim\!!widtha>\!!widthb
        \setbox\nextbox\vbox\!!to\paperheight{\vss\expanded{\scale[\c!width=\paperwidth]{\flushnextbox}}\vss}%
      \else
        \setbox\nextbox\hbox\!!to\paperwidth{\hss\expanded{\scale[\c!height=\paperheight]{\flushnextbox}}\hss}%
      \fi \setbox\nextbox\hbox{\clip[\c!width=\paperwidth,\c!height=\paperheight]{\flushnextbox}}%
      \startTEXpage
      \flushnextbox
      \stopTEXpage
      \egroup}
   \hbox}

\protect

\starttext

\fullpagebox{\externalfigure[image]}

\stoptext

Wolfgang
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Re: Images centered on page

[luigi scarso]

amazing mailing list


-- 
luigi
...
it's new .
it's powerful .
it's luatex .
http://www.luatex.org
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Re: Images centered on page

[Idris Samawi Hamid]

On Fri, 23 Nov 2007 12:30:48 -0700, Wolfgang Schuster  
<schuster.wolfgang@googlemail.com> wrote:

> \unprotect
>
> \def\fullpagebox
>   {\bgroup
>    \dowithnextbox
>      {\!!widtha\dimexpr\paperwidth/\nextboxwd\relax
>       \!!widthb\dimexpr\paperheight/\nextboxht\relax
>       \ifdim\!!widtha>\!!widthb
>         \setbox\nextbox\vbox\!!to\paperheight{\vss\expanded{\scale[\c!width=\paperwidth]{\flushnextbox}}\vss}%
>       \else
>         \setbox\nextbox\hbox\!!to\paperwidth{\hss\expanded{\scale[\c!height=\paperheight]{\flushnextbox}}\hss}%
>       \fi  
> \setbox\nextbox\hbox{\clip[\c!width=\paperwidth,\c!height=\paperheight]{\flushnextbox}}%
>       \startTEXpage
>       \flushnextbox
>       \stopTEXpage
>       \egroup}
>    \hbox}
>
> \protect
>
> \starttext
>
> \fullpagebox{\externalfigure[image]}
>
> \stoptext

Now THAT's the 1st-class gangster we know and love so much ;-)

Question: How can we, if desired, fit the image to the page dimensions?  
See what happens with

\starttext

\fullpagebox{\externalfigure[cow][scale=fit]}

\stoptext

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: Images centered on page

[Wolfgang Schuster]

On Fri, 23 Nov 2007 22:32:46 -0700
"Idris Samawi Hamid" <ishamid@colostate.edu> wrote:

> On Fri, 23 Nov 2007 12:30:48 -0700, Wolfgang Schuster  
> <schuster.wolfgang@googlemail.com> wrote:
> 
> > \unprotect
> >
> > \def\fullpagebox
> >   {\bgroup
> >    \dowithnextbox
> >      {\!!widtha\dimexpr\paperwidth/\nextboxwd\relax
> >       \!!widthb\dimexpr\paperheight/\nextboxht\relax
> >       \ifdim\!!widtha>\!!widthb
> >         \setbox\nextbox\vbox\!!to\paperheight{\vss\expanded{\scale[\c!width=\paperwidth]{\flushnextbox}}\vss}%
> >       \else
> >         \setbox\nextbox\hbox\!!to\paperwidth{\hss\expanded{\scale[\c!height=\paperheight]{\flushnextbox}}\hss}%
> >       \fi  
> > \setbox\nextbox\hbox{\clip[\c!width=\paperwidth,\c!height=\paperheight]{\flushnextbox}}%
> >       \startTEXpage
> >       \flushnextbox
> >       \stopTEXpage
> >       \egroup}
> >    \hbox}
> >
> > \protect
> >
> > \starttext
> >
> > \fullpagebox{\externalfigure[image]}
> >
> > \stoptext
> 
> Now THAT's the 1st-class gangster we know and love so much ;-)
> 
> Question: How can we, if desired, fit the image to the page dimensions?  
> See what happens with
> 
> \starttext
> 
> \fullpagebox{\externalfigure[cow][scale=fit]}
> 
> \stoptext

Can you try \pagefigure, my solution was to scale a image to the
papersize and remove parts. \pagefigure includes a figure within a
TEXpage and you scale now the figure to the size of the document.

\starttext

\pagefigure[cow][width=\paperwidth,height=\paperheight]

\stoptext

Wolfgang
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