/**
* Creates the Control for the associated DisplayScalar. This method invokes the method {@link
* ScalarMapListener#controlChanged(ScalarMapControlEvent)} on all registered {@link
* ScalarMapListener}s with this instance as the event source and {@link
* ScalarMapEvent#CONTROL_ADDED} or {@link ScalarMapEvent#CONTROL_REPLACED} as the event ID --
* depending on whether this is the first control or not. The event control is the previous
* control if the event ID is {@link ScalarMapEvent#CONTROL_REPLACED}. If the event ID is {@link
* ScalarMapEvent#CONTROL_ADDED}, then the event control is the created control or <code>null
* </code> -- depending on whether or not the control was successfully created.
*
* @throws RemoteException Java RMI failure
* @throws VisADException VisAD failure
*/
synchronized void setControl() throws VisADException, RemoteException {
int evtID;
Control evtCtl;
if (control != null) {
evtID = ScalarMapEvent.CONTROL_REPLACED;
evtCtl = control;
} else {
evtID = ScalarMapEvent.CONTROL_ADDED;
evtCtl = null;
}
if (display == null) {
throw new DisplayException("ScalarMap.setControl: not part of " + "any Display");
}
control = display.getDisplayRenderer().makeControl(this);
if (control != null) {
display.addControl(control);
if (evtCtl == null) {
evtCtl = control;
}
}
if (control != null || evtCtl != null) {
notifyCtlListeners(new ScalarMapControlEvent(this, evtID, evtCtl));
}
}
/**
* Create the scale that is displayed. This is called automatically when <CODE>setRange(lo, hi)
* </CODE> and <CODE>setDisplay</CODE> are called. It makes a call to <CODE>AxisScale.makeScale()
* </CODE> where the actual hard work is done.
*
* @throws VisADException VisAD error.
*/
public void makeScale() throws VisADException {
if (axisScale != null) {
DisplayRenderer displayRenderer = null;
if (display == null) return;
displayRenderer = display.getDisplayRenderer();
if (displayRenderer == null) return;
boolean scaleMade = axisScale.makeScale();
if (scaleMade) {
// displayRenderer.setScale(axis, axis_ordinal, array, scale_color);
if (scale_on) {
displayRenderer.setScale(axisScale);
} else {
displayRenderer.clearScale(axisScale);
}
scale_flag = false;
}
}
}
