Re: Position of figures

[Hans Hagen <pragma@wxs.nl>]

"Haseloff, Lutz" wrote:

> Is it possible in ConTeXt to place a figure or text on the page
> *independent* of all other
> contents of the page and *independent* of the margins?
> In LaTeX it was possible with the at.sty.
> I tried out the Command \position(number,number){text}, but it places
> text and figures depending from the current Position and gives me many
> overfull \hbox and \vbox messages, \hss and \vss didn´t help.
> My TeX Knowledge isn´t that deep, that i could change the content of \output
> without crashing ConTeXt.

There are two mechanisms, one is described in the chapters I posted
recently , and deals with logo's, the other, more frequently used
mechanism is called overlays. Say you have: 

  \defineoverlay[thisorthat][{\externalfigure[...]}]

then you can say: 

  \setupbackgrounds
    [text][text]
    [background=thisorthat]

or even a collection of overlays, like background={color,one,two,three}
where color refers to the current backgroundcolor. When dealing with
overlays, one can use \overlaywidth and \overlayheight as dimensions
(macros actually). Overlays can be put behind all relevant areas:
headers, footers, text, margin, edge, top, bottom, and page. The latter
permits you to exactly position the figure, the former force
consistency. There is much more to say to this btw. 

In my spare moments, 'm working on graphics layering as well, which
means graphics on and across layers, hooked into overlays. Rather nice
(and even impressive) I would say. Here I also have an experimental page
model for metapost, which means that one can have graphics that uses
dimensions and positions fed by tex, but permits more clever graphics. 

In the next MAPS I will (if taco permits me) present some of this, so
maybe this is a reason to join the NTG -)

Hans

> btw, what means degelijkheid?

Ha, you refer to the language documentation where I classify according
to proverbs and so. It means that when germans do something they do it
quite well, they go for it, proper stuff and so. If you want to buy a
'degelijke' car, you'd better buy german. Of course 'degelijkheid' can
have its backsides too -)

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.nl
-----------------------------------------------------------------