Don't affect digital mouse wheels (a.k.a. step-scroll)

2012-05-22 17:43:52 +02:00
parent f377d0387f
commit 12931612ea
2 changed files with 7 additions and 2 deletions
--- a/lib/OpenLayers/Handler/MouseWheel.js
+++ b/lib/OpenLayers/Handler/MouseWheel.js
@@ -176,7 +176,12 @@ OpenLayers.Handler.MouseWheel = OpenLayers.Class(OpenLayers.Handler, {
                    e = window.event;
                }
                if (e.wheelDelta) {
-                    delta = e.wheelDelta/this.analogWheelPrecision; 
+                    delta = e.wheelDelta;
+                    if (delta % 120 === 0) {
+                        delta = delta / 120;
+                    } else {
+                        delta = delta / this.analogWheelPrecision;
+                    }
                    if (window.opera && window.opera.version() < 9.2) {
                        delta = -delta;
                    }