code: @SuppressWarnings("unused")
      private void zoomSliderStateChanged(javax.swing.event.ChangeEvent evt)
      {// GEN-FIRST:event_zoomSliderStateChanged
          if (!zoomChanging)
          {
              setZoom(zoomSlider.getValue());
          }
          // TODO add your handling code here:
      }
docs: GEN-LAST:event_zoomInButtonActionPerformed