Java Tutorial/SWT/SWT Timer
17. Create one repeating timer
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/
import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class TimerRepeating {
public static void main(String[] args) { final Display display = new Display(); final Shell shell = new Shell(display); final int time = 500; Runnable timer = new Runnable() { public void run() { Point point = display.getCursorLocation(); Rectangle rect = shell.getBounds(); if (rect.contains(point)) { System.out.println("In"); } else { System.out.println("Out"); } display.timerExec(time, this); } }; display.timerExec(time, timer); shell.setSize(200, 200); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
}</source>
17. Create two one shot timers (s)
<source lang="java">
import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class TimerOneShot2000 {
public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.setSize(200, 200); shell.open(); display.timerExec(2000, new Runnable() { public void run() { System.out.println("2000"); } }); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); }
}</source>
17. Stop a repeating timer when a button is pressed
<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/
/*
* Display example snippet: stop a repeating timer when a button is pressed * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/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 TimeStopWhenButtonPressing {
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(); }
}</source>