comparison view/View.cpp @ 283:86a112b5b319

* Make it possible to "measure" a feature on the spectrogram by double-
  clicking in measure mode
* Make shift-click-drag (for zoom to region) work in measure mode as well
  as navigate mode.  It would be nice to be able to shift-doubleclick to
  zoom on a feature directly using a combination of these last two features,
  but that isn't possible yet.
* Make Del delete the measurement under the mouse pointer.

             }
             bw = paint.fontMetrics().width(bxs);
         }
     }
         
-    if (b0 && b1 && u0 == u1) {
+    if (b0 && b1 && v1 != v0 && u0 == u1) {
         dxs = QString("(%1 %2)").arg(fabs(v1 - v0)).arg(u1);
         dw = paint.fontMetrics().width(dxs);
     }
     
     b0 = false;

     bool bd = false;
     float dy = 0.f;
     QString du;
 
     if ((bd = topLayer->getYScaleDifference(this, r.y(), r.y() + r.height(),
-                                            dy, du))) {
+                                            dy, du)) &&
+        dy != 0) {
         if (du != "") {
             dys = QString("(%1 %2)").arg(dy).arg(du);
         } else {
             dys = QString("(%1)").arg(dy);
         }