package org.freehep.j3d.plot;
/**
* MouseDownUpBehavior.java - used to switch a switch node to display a simpler
* graph during rotations, panning, zooming, etc.
*/
import java.awt.event.*;
import java.awt.AWTEvent;
import javax.media.j3d.*;
import java.util.Enumeration;
import javax.vecmath.*;
/**
* @author Joy Kyriakopulos (joyk@fnal.gov)
* @version $Id: MouseDownUpBehavior.java 8584 2006-08-10 23:06:37Z duns $
*/
class MouseDownUpBehavior extends Behavior
{
WakeupOnAWTEvent w1 = new WakeupOnAWTEvent(MouseEvent.MOUSE_RELEASED);
WakeupCriterion[] w2 = {w1};
WakeupCondition w = new WakeupOr(w2);
WakeupOnAWTEvent wu1 = new WakeupOnAWTEvent(MouseEvent.MOUSE_PRESSED);
WakeupCriterion[] wu2 = {wu1};
WakeupCondition wu = new WakeupOr(wu2);
Switch sw;
private TimeStamp timeStamp = TimeStamp.sharedInstance();
public void initialize() {
// Establish initial wakeup criteria
wakeupOn(wu);
}
/**
* Override Behavior's stimulus method to handle the event.
*/
public void processStimulus(Enumeration criteria) {
WakeupOnAWTEvent ev;
WakeupCriterion genericEvt;
AWTEvent[] events;
// return if switch is disabled (user data is false)
if (!(((Boolean)sw.getUserData()).booleanValue())) {
wakeupOn(wu);
return;
}
while (criteria.hasMoreElements()) {
genericEvt = (WakeupCriterion) criteria.nextElement();
if (genericEvt instanceof WakeupOnAWTEvent) {
ev = (WakeupOnAWTEvent) genericEvt;
events = ev.getAWTEvent();
processSwitchEvent(events);
}
}
}
/**
* Process a mouse up or down event to switch a switch node.
*/
void processSwitchEvent(AWTEvent[] events) {
for (int i = 0; i < events.length; ++i) {
if (events[i] instanceof MouseEvent) {
MouseEvent event = (MouseEvent)events[i];
if (event.getID() == MouseEvent.MOUSE_PRESSED) {
sw.setWhichChild(1); // we assume here that zero is the default
// Set wakeup criteria for next time
wakeupOn(w);
break;
}
else if (event.getID() == MouseEvent.MOUSE_RELEASED) {
sw.setWhichChild(0); // we assume here that zero is the default
// Set wakeup criteria for next time
wakeupOn(wu);
break;
}
}
}
}
/**
* Constructor
*/
public MouseDownUpBehavior(Bounds bound, Switch s) { // change to switch
this.setSchedulingBounds(bound);
sw = s;
}
}