Edit 2:
And back to feeling dumb... I found the issue (actually found it some time ago but forgot to update this...). The issue ended up being that I was only using the runnable and not placing it inside of a new Thread()
object. For some reason I was thinking runnable objects created their own new threads, but once I figured out my mistake, it was an easy fix. Obviously I still have a long ways to go in learning Java...
Edit:
Ok, now I'm annoyed... apparently it still breaks if you attempt to run it from an action listener of some kind. My most recent version of the PulseAlert class (below) that calls into the PulseWindow class shown in the original answer further below:
public class PulseAlert {
private static Border compound = BorderFactory.createCompoundBorder(BorderFactory.createRaisedBevelBorder(), BorderFactory.createLoweredBevelBorder());
private static Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
public void runAlert() throws InterruptedException {
final PulseWindow pulseWin = new PulseWindow(alertWindow());
pulseWin.getWindow().addMouseListener(new MouseListener() {
@Override
public void mouseClicked(MouseEvent click) {
if(SwingUtilities.isRightMouseButton(click)) {
pulseWin.stopPulsing();
pulseWin.destroyPulse();
} else if(SwingUtilities.isLeftMouseButton(click) && pulseWin.isPulsing()) {
pulseWin.stopPulsing();
} else if(SwingUtilities.isLeftMouseButton(click) && !pulseWin.isPulsing()) {
pulseWin.startPulsing();
}
}
@Override
public void mouseEntered(MouseEvent arg0) {}
@Override
public void mouseExited(MouseEvent arg0) {}
@Override
public void mousePressed(MouseEvent arg0) {}
@Override
public void mouseReleased(MouseEvent arg0) {}
});
try {
pulseWin.startPulse();
} catch (Exception e) {
e.printStackTrace();
}
while(pulseWin.pulserActive()) {
Thread.sleep(100);
}
System.out.println("done with second SW");
}
public static JWindow alertWindow() {
System.out.println("Start");
JWindow newWin = new JWindow();
JPanel panel = new JPanel();
panel.setBorder(compound);
panel.setBackground(Color.RED);
JLabel imgLbl = new JLabel("Enter Alert Msg Here!");
imgLbl.setFont(new Font(null,Font.BOLD,16));
panel.add(imgLbl);
newWin.setContentPane(panel);
newWin.pack();
Insets scnMax = Toolkit.getDefaultToolkit().getScreenInsets(newWin.getGraphicsConfiguration());
int taskBar = scnMax.bottom;
int x = screenSize.width - newWin.getWidth();
int y = screenSize.height - taskBar - newWin.getHeight();
newWin.setLocation(x,y);
newWin.setVisible(true);
return newWin;
}
}
And below is how I can call up the alert window - repeatedly, if I like, as long as it's outside of an action listener.
PulseAlert alertPulse = new PulseAlert();
alertPulse.runAlert();
The above code works flawlessly until placed into an action listener of some kind such as:
trayIcon.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
alertPulse.runAlert();
} catch (InterruptedException e1) {
e1.printStackTrace();
}
}
});
Once the runAlert()
method is called from an action listener, the whole thing freezes like it did previously. Runs perfectly fine until then. Any ideas what is causing this? Is this a bug in Java or am I doing something wrong?
Original Answer:
Ok, I feel pretty dumb, now. All I had to do to fix the issue was place the startPulsing()
contents into a new runnable and it all works, and as many times as I need it to.
public void startPulsing() throws Exception {
new Runnable() {
@Override
public void run() {
pulse = true;
win.setVisible(true);
boolean decreasing = true;
double inc = 0.05;
double current = win.getOpacity();
while(pulse) {
if(doPulse) {
if(decreasing) {
current = current - inc;
if((float) current <= floor) {
current = floor;
win.setOpacity((float) current);
decreasing = false;
} else {
win.setOpacity((float) current);
}
} else {
current = current + inc;
if((float) current >= 1.0f) {
current = 1.0;
win.setOpacity((float) current);
decreasing = true;
} else {
win.setOpacity((float) current);
}
}
} else {
current = 1.0;
win.setOpacity(1.0f);
decreasing = true;
}
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
win.setOpacity(1.0f);
}
}.run();
}