On Sep 22, 8:33 pm, jbliesener <[EMAIL PROTECTED]> wrote:
> Folks,
>
> I have a problem which I don't know how to resolve. I'm using Google
> Maps API in my GWT application, however the question is related more
> to the general API than to GWT.
>
> I have a map with n GMarkers and possibly a GInfoWindow. I would like
> to calculate map bounds and zoom so that ALL markers AND the
> infowindow are fully shown in the view.
>
> My first problem is to obtain the left/top/width/height coordinates of
> the InfoWindow. Any idea how to do this without tampering with browser
> specific code?

The infowindow is dynamically sized to fit its contents.  I don't know
of anyway to pre-calculate its size.  If all your infoWindows are the
same size, or if there size can be precalculated off-line, then you
might be able to attempt this.  However, you would have to make sure
that user adjustments of the font size don't affect the size of the
infoWindow...

>
> Next question: I would have to calculate the pixel bounds of the set
> of markers in the new zoom scale without actually drawing them. Only
> this would allow me to test whether it would be possible to show the
> (fixed sized) infowindow and the (variable scale) markers on the same
> screen. (I would calculate union of the marker set bounds and the
> infowindow bounds and compare it with the screen size. If it were
> beyond, I would reduce zoom and try again).

The API provides methods for doing that:
http://code.google.com/apis/maps/documentation/reference.html#GMap2.Methods.Map-State
getBoundsZoomLevel(bounds)

  -- Larry
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