[OpenLayers-Users] Another offset problem (follow-up on Bug? Zoom box offset when using large scales)

Fri Aug 24 08:30:39 EDT 2007

Hi,

As a follow-up to my earlier report (see below), I am getting some other
XY-coordinate problems that I suspect could be related:

I am using X=evt.xy.x; Y = evt.xy.y for getting click-coordinates to report
back to a GetFeautureInfo call to WMS. In IE7 on PC, Safari & Opera on
MacOSX this works fine. In FireFox on Mac & PC however, the X reported back
if offset as soon as the body of the HTML is offset. In other words, if the
map <div> is in a HTML <body> that has a margin-left=100px, evt.xy.x=101 in
FireFox, and evt.xy.x=1 in all other browsers! Equally,  evt.xy.y is
affected by margin-top...

My question is: is evt.xy.x a OpenLayers property, or a general javaScript
one? In the latter case, I guess it's a FireFox bug. Any ideas on how to get
around it...?

Yours,
__ 
Barend Köbben
International Institute for Geo-information
Sciences and Earth Observation (ITC)
PO Box 6, 7500AA Enschede (The Netherlands)
ph: +31 (0)53 4874253; fax: +31 (0)53 4874335

On 03-08-2007 14:50, "Christopher Schmidt" <crschmidt at metacarta.com> wrote:

> On Fri, Aug 03, 2007 at 12:26:57PM +0200, Barend K?bben wrote:
>> Hi ,
>> 
>> I have data of a really large scale, it's almost 1:1 drawings of
>> archeological finds. They have been measured very precisely and nicely
>> georef'd to a UTM projection and consist of maps of typically some 15x15 to
>> 20x20 meters in size.
>> All works quite fine, but the large scale obviously gives some problems,
>> that I consider a bug: The zoom box (SHIFT-Drag) does not appear were the
>> actual mouse is moving. The effect varies according to the size of the
>> screen and the browser (eg. on my 1024x768 Mac running Firefox it's not as
>> bad as on a 1680x1050 PC using IE7, where it's really way off). I have
>> experimented with all kinds of resolution and scale settings, but to no
>> avail...
> 
> This is almost definitely a bug in OpenLayers ... holy crap, you weren't
> kidding. Something's totally broken there.
> 
> Erik, can you file this as a blocker for 2.5?
> 
> Thanks for the report, Barend. We'll look into this.
> 
> -- Chris
> 
>> Sciences and Earth Observation (ITC)
>> PO Box 6, 7500AA Enschede (The Netherlands)
>> ph: +31 (0)53 4874253; fax: +31 (0)53 4874335
>> 
>> 
>> _______________________________________________
>> Users mailing list
>> Users at openlayers.org
>> http://openlayers.org/mailman/listinfo/users
>> 