[mapserver-users] Is there a way to add a single click zoom button

[Pietro Giannini]

Yes, but using some javascript in template html.

if you want to zoomin 2x:

<script language="JavaScript">
 function zoom2x()
 {
 	document.forms['mapserv'].imgxy.value = [mapwidth]/2 + " " + [mapheight]/2;
 	document.forms['mapserv'].zoom.value = 2;
 	document.forms['mapserv'].submit();
 }
</script>

called from a button control:
<input type="button" value="zoom in 2 X" onclick="javascript:zoom2x();">

assuming that you have an hidden field named 'imgxy' and a control
(select, radio, another hidden fiedl...) named 'zoom' in a form named
'mapserv'.

ciao
.......................pg

-- 
Pietro Giannini
Bytewise srl - Area GIS
41°50'38.58"N 12°29'13.39"E



On Mer, Gennaio 14, 2009 18:34, boesiii wrote:
>
> by just using the map file and html template file.
> --
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