comparison widgets/Panner.cpp @ 193:57c2350a8c40

* Add slice layers (so you can display a slice of a colour 3d plot as if it were
  a spectrum)
* Make spectrum layer a subclass of slice layer

 }
 
 void
 Panner::wheelEvent(QWheelEvent *e)
 {
-    if (e->delta() > 0) {
+    if (e->delta() < 0) {
         m_rectY += 0.1;
     } else {
         m_rectY -= 0.1;
     }