|
/*
* Display example snippet: stop a repeating timer when a button is pressed
*
* For a list of all SWT example snippets see
* http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class Snippet68 {
public static void main(String[] args) {
final Display display = new Display();
final Color red = display.getSystemColor(SWT.COLOR_RED);
final Color blue = display.getSystemColor(SWT.COLOR_BLUE);
Shell shell = new Shell(display);
shell.setLayout(new RowLayout());
Button button = new Button(shell, SWT.PUSH);
button.setText("Stop Timer");
final Label label = new Label(shell, SWT.BORDER);
label.setBackground(red);
final int time = 500;
final Runnable timer = new Runnable() {
public void run() {
if (label.isDisposed())
return;
Color color = label.getBackground().equals(red) ? blue : red;
label.setBackground(color);
display.timerExec(time, this);
}
};
display.timerExec(time, timer);
button.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event event) {
display.timerExec(-1, timer);
}
});
button.pack();
label.setLayoutData(new RowData(button.getSize()));
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
|
