[Chameleon] DHTML image gets shifted

[Paul Spencer]

In the latest cvs version, this issue and related issues should be 
fixed.  The problem is that different browsers can resolve page layout 
in different orders.  We had made the assumption that by positioning the 
map image in the script after the </body> tag, the browser would have 
completed all calculations and the image would be positioned correctly. 
  This is not (apparently) the case.  Now the map image is positioned as 
part of the page's onload event and appears correctly in every 
circumstance we can invent.

As a side benefit we have added a hook to the page's onresize event 
which correctly repositions the map image when resizing the page in IE 
(netscape/mozilla submits after a resize so it was less of an issue). 
This would only happen if the html in the page was designed to move if 
the page resized, for instance if a table is fixed width and centered.

Cheers,

Paul

bartvde@xs4all.nl wrote:

> Hi Jacob,
> 
> there was a pretty extended discussion about this in January, see this
> thread:
> 
> http://lists.maptools.org/pipermail/chameleon/2004-January/000299.html
> 
> Best regards,
> Bart
> 
> 
>>Hi List,
>>
>>I got a little bug in the chameleon site I built (version 1.0.4). It's
>>something that happens only sometimes (most enjoyable kind of bug to fix).
>>When the page loads for the first time, the DHTML image tends to show up
>>shifted roughly 250 pixels to the right. After I either refresh or
>>re-submit, it's mostly okay again. It happens more frequently if the
>>connection is slower. I was wondering if this is a known issue, and if
>>there
>>is a quick fix. I suspect that it's a problem with the order in which
>>things
>>get initialised. I was thinking of running a function on the 'onload'
>>event
>>which forces the image in the right spot. But I'm not too clear about how
>>I'd actually move the DHTML image (or the DIV it sits in) without messing
>>up
>>other things. Any ideas?
>>
>>The site runs at http://spatial.hgm.com.au/cwcroe7/cwc2.php
>><http://spatial.hgm.com.au/cwcroe7/cwc2.php>  (internet explorer
>>oriented...
>>sorry)
>>
>>Regards,
>>
>>Jacob
>>
>>
>>
>>JACOB DELFOS
>>SPATIAL INFORMATION ANALYST
>>Maunsell Australia Pty Ltd
>>629 Newcastle Street
>>PO Box 81
>>Leederville 6902
>>Western Australia
>>ABN 20 093 846 925
>>
>>Tel     + 61 8 9281 6185
>>Fax     + 61 8 9281 6297
>>jacob.delfos@maunsell.com
>>
>>
> 
> 
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> 

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|Paul Spencer                           pspencer@dmsolutions.ca   |
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|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
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