| /* |
| * Copyright (c) 2015 Eike Stepper (Berlin, Germany) 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: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.net4j.util.ui.widgets; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.events.MouseEvent; |
| import org.eclipse.swt.events.MouseListener; |
| import org.eclipse.swt.events.MouseMoveListener; |
| import org.eclipse.swt.events.MouseTrackListener; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Label; |
| |
| /** |
| * @author Eike Stepper |
| * @since 3.5 |
| */ |
| public class ImageButton extends Label implements MouseTrackListener, MouseMoveListener, MouseListener |
| { |
| private final Image image; |
| |
| private final Image grayImage; |
| |
| private boolean inImage; |
| |
| public ImageButton(Composite parent, Image image) |
| { |
| this(parent, image, new Image(parent.getDisplay(), image, SWT.IMAGE_GRAY)); |
| } |
| |
| public ImageButton(Composite parent, Image image, Image grayImage) |
| { |
| super(parent, SWT.NONE); |
| this.image = image; |
| this.grayImage = grayImage; |
| |
| setImage(grayImage); |
| |
| addMouseTrackListener(this); |
| addMouseMoveListener(this); |
| addMouseListener(this); |
| } |
| |
| public void mouseEnter(MouseEvent e) |
| { |
| mouseMove(e); |
| } |
| |
| public void mouseExit(MouseEvent e) |
| { |
| mouseMove(e); |
| } |
| |
| public void mouseHover(MouseEvent e) |
| { |
| // Do nothing. |
| } |
| |
| public void mouseMove(MouseEvent e) |
| { |
| Rectangle bounds = getBounds(); |
| bounds.x = 0; |
| bounds.y = 0; |
| |
| inImage = bounds.contains(e.x, e.y); |
| if (inImage) |
| { |
| setImage(image); |
| } |
| else |
| { |
| setImage(grayImage); |
| } |
| } |
| |
| public void mouseDoubleClick(MouseEvent e) |
| { |
| // Do nothing. |
| } |
| |
| public void mouseDown(MouseEvent e) |
| { |
| // Do nothing. |
| } |
| |
| public void mouseUp(MouseEvent e) |
| { |
| if (inImage) |
| { |
| widgetSelected(); |
| } |
| } |
| |
| @Override |
| protected void checkSubclass() |
| { |
| // Disable the check that prevents subclassing of SWT components. |
| } |
| |
| protected void widgetSelected() |
| { |
| } |
| } |