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GoogleMapAPI: Draggable Markers and MouseWheel Zoom

 
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wolfgang
Smarty n00b


Joined: 23 May 2008
Posts: 1

PostPosted: Fri May 23, 2008 3:38 pm    Post subject: GoogleMapAPI: Draggable Markers and MouseWheel Zoom Reply with quote

To zoom by MouseWheel just add the following line to function getMapJS()

Code:
 
$_output .= 'map.enableScrollWheelZoom();'."\n";


If you like draggable markers:

Code:

var $draggable = false;
// Make Marker draggable and output coords to "coords_lat" and "coords_lon"
function enableDraggable() {
  $this->draggable = true;
}
// disable draggable Markers
function disableDraggable() {
  $this->draggable = false;
}


Change following in getCreateMarkerJS:

Code:

if(!empty($this->_icons)) {
  if($this->draggable) {
    $_output .= 'var marker = new GMarker(point,{\'icon\': icon[n], \'draggable\': true, \'title\': tooltip});' . "\n";
  } else {
    $_output .= 'var marker = new GMarker(point,{\'icon\': icon[n], \'title\': tooltip});' . "\n";
  }
} else {
  if($this->draggable) {
    $_output .= 'var marker = new GMarker(point,{\'draggable\': true, \'title\': tooltip});' . "\n";
  } else {
    $_output .= 'var marker = new GMarker(point,{\'title\': tooltip});' . "\n";
  }
}


Add the following at the end of this function, before "return marker;":

Code:
 
if($this->draggable) {
  $_output .= 'marker.enableDragging();'."\n";
  $_output .= 'GEvent.addListener(marker, "drag", function(){ ';
  $_output .= 'document.getElementById("coords_lat").value=marker.getPoint().lat();';
  $_output .= 'document.getElementById("coords_lon").value=marker.getPoint().lng();';
  $_output .= '});'."\n";
}


This could be implemented smarter I think, maybe the author could do it, who has done a great job btw.

Comments and tips welcome, have a look in action at www.bandliste.de
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