[Mapserver-users] Pan

[David Fawcett]

Brent, 

I have been just digging into the javascript in the workshop demo. 
Below is the pan function from the itasca_adds_pan.html.  In the last
few lines, you will see that there is a statement that forces the
zoom/pan option to pan.  

I would assume that you could add a similar statement to force your
map/query mode to 'browse'.  

How about something like:  

    document.mapserv.mode[0].checked = true; // force browse

David.  

YMMV, I haven't tested this, just conjecture.......


<script language="javascript">
  var pansize = 0.80;

  function pan(direction) {    
    var x, y;

    if(direction == 'n') {
      x = ([mapwidth]-1)/2.0;
      y = 0 - [mapheight]*pansize + [mapheight]/2.0;
    } else if(direction == 'nw') {
      x = 0 - [mapwidth]*pansize + [mapwidth]/2.0;
      y = 0 - [mapheight]*pansize + [mapheight]/2.0;
    } else if(direction == 'ne') {
      x = ([mapwidth]-1) + [mapwidth]*pansize - [mapwidth]/2.0;
      y = 0 - [mapheight]*pansize + [mapheight]/2.0;
    } else if(direction == 's') {
      x = ([mapwidth]-1)/2.0;
      y = ([mapheight]-1) + [mapheight]*pansize - [mapheight]/2.0;
    } else if(direction == 'sw') {
      x = 0 - [mapwidth]*pansize + [mapwidth]/2.0;
      y = ([mapheight]-1) + [mapheight]*pansize - [mapheight]/2.0;
    } else if(direction == 'se') {
      x = ([mapwidth]-1) + [mapwidth]*pansize - [mapwidth]/2.0;
      y = ([mapheight]-1) + [mapheight]*pansize - [mapheight]/2.0;
    } else if(direction == 'e') {
      x = ([mapwidth]-1) + [mapwidth]*pansize - [mapwidth]/2.0;
      y = ([mapheight]-1)/2.0;
    } else if(direction == 'w') {
      x = 0 - [mapwidth]*pansize + [mapwidth]/2.0;
      y = ([mapheight]-1)/2.0;
    }

    document.mapserv.zoomdir[1].checked = true; // force pan
    document.mapserv.imgxy.value = x + " " + y;
    document.mapserv.submit();
  }
</script>



David J. Fawcett
MN Office of Environmental Assistance

>>> Brent Lund <Brent.Lund at state.mn.us> 12/9/2003 11:05:13 AM >>>
I am attempting to add pan controls similar to Steve's example at

 

http://maps.dnr.state.mn.us/mapserver_demos/workshop/ 
<http://maps.dnr.state.mn.us/mapserver_demos/workshop/>   (select the
"add
pan controls").   Steve's example works swell except when the user
selects a
query option and then decides to use a pan control.    Rather than
panning
the user ends up with a query result.

 

I'm guessing there has to be a way to set the mode in the Pan
javascript
function.     I haven't been able to figure out the syntax however -
anyone
know what that would be?  

 

 

Thanks

 

Brent