Re: [NTG-context] fitting a picture to the available space

11 Sep 2008


      Thomas A. Schmitz wrote:
...
On Sep 11, 2008, at 4:13 PM, Wolfgang Schuster wrote:
...
...
On Sep 11, 2008, at 10:04 AM, Thomas A. Schmitz wrote:
...
On Sep 11, 2008, at 9:28 AM, Hans Hagen wrote:
...
\starttext
\framed[width=5cm,height4cm]{\externalfigure[mill.png]
[maxwidth=3cm,maxheight=4cm,width=10cm]}
\stoptext
seems to work
Ah of course! I could set the width to an absurdly high number and  
so
make sure that it will always reach the maxheight/maxwidth, no  
matter
what the ratio! This seems to work, thanks a lot!
Alas, I spake too soon. Here is an example:
\starttext
\framed[frame=on,strut=no,width=8cm,height=2cm]
{\externalfigure[mill.png][maxwidth=8cm,maxheight=2cm,width=10cm]}
\stoptext
I would expect the picture to stay within the maxheight, but it  
doesn't.
You could write your own macros and comapre the width/height ration  
of the
On Thu, Sep 11, 2008 at 3:28 PM, Thomas A. Schmitz
 wrote:
picture with the reation of the box, is simple example is shown below.
\starttext
\start
\setbox\scratchbox\vbox{\externalfigure[mill]}
\dimen0=\wd\scratchbox
\dimen2=\ht\scratchbox
\framed[frame=on,strut=no,width=8cm,height=2cm]
 {\dimen1=\hsize \divide\dimen1 by \dimen0
  \dimen3=\vsize \divide\dimen3 by \dimen2
  \ifdim\dimen1>\dimen3
    \externalfigure[mill][height=\vsize]
  \else
    \externalfigure[mill][width=\hsize]
  \fi}
\framed[frame=on,strut=no,width=2cm,height=8cm]
 {\dimen1=\hsize \divide\dimen1 by \dimen0
  \dimen3=\vsize \divide\dimen3 by \dimen2
  \ifdim\dimen1>\dimen3
    \externalfigure[mill][height=\vsize]
  \else
    \externalfigure[mill][width=\hsize]
  \fi}
\stop
\stoptext
Wolfgang
Wolfgang,
as always, you're a source of wisdom and knowledge... Just I  
understand this correctly and can adapt it to my macro: \dimen1= 
\hsize: here \hsize refers to the size of the \framed inside which  
we're operating, right?
be careful ... use \dimen4 and 6 instead of 1 and 3, by convention odd 
registers < 10 are used global

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