[OpenLayers-Users] mousewheel

[Mike Quentel]

Try modifying the following mouse wheel related events.  I changed these
because I wanted the mouse wheel to zoom in using the centre of the map,
not centre at mouse cursor.

in Navigation.js:

    /** 
     * Method: wheelUp
     * User spun scroll wheel up
     * 
     * Parameters:
     * evt - {Event}
     */
    wheelUp: function(evt) {
        //this.wheelChange(evt, 1);
        this.map.zoomIn();
    },

    /** 
     * Method: wheelDown
     * User spun scroll wheel down
     * 
     * Parameters:
     * evt - {Event}
     */
    wheelDown: function(evt) {
        //this.wheelChange(evt, -1);
        this.map.zoomOut();
    },

in MouseDefaults.js:

    /** 
     * Method: defaultWheelUp
     * User spun scroll wheel up
     * 
     */
    defaultWheelUp: function(evt) {
//        if (this.map.getZoom() <= this.map.getNumZoomLevels()) {
//            this.map.setCenter(this.map.getLonLatFromPixel(evt.xy),
//                               this.map.getZoom() + 1);
//        }
         this.map.zoomIn();
    },

    /**
     * Method: defaultWheelDown
     * User spun scroll wheel down
     */
    defaultWheelDown: function(evt) {
//        if (this.map.getZoom() > 0) {
//            this.map.setCenter(this.map.getLonLatFromPixel(evt.xy),
//                               this.map.getZoom() - 1);
//        }
          this.map.zoomOut();
    },

-----Original Message-----
From: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org]
On Behalf Of matthewsnape
Sent: Wednesday, 23 April 2008 09:22
To: users at openlayers.org
Subject: [OpenLayers-Users] mousewheel


Hi,

I have a problem with the mousewheel.  When I zoom in and out it zooms
by 2 steps instead of just one.  If I zoom in or out using the pan zoom
bar it only uses a single increment. Any ideas why this may be
happening?

Thanks.
--
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http://www.nabble.com/mousewheel-tp16834598p16834598.html
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