iconbutton.java

具有不同语法高亮的编辑器实例

/*
 * 08/10/2005
 *
 * IconButton.java - Button used by editors and renderers for displaying an
 * icon.
 * Copyright (C) 2005 Robert Futrell
 * [e-mail]
 * www.website.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.fife.ui.propertysheet;

import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import javax.swing.Icon;
import javax.swing.ImageIcon;


/**
 * Button used by editors and renderers for displaying an <code>Icon</code>.
 *
 * @author Robert Futrell
 * @version 1.0
 */
public class IconButton extends PropertySheetButton {

	/**
	 * 
	 */
	private static final long serialVersionUID = -6925079834608086551L;
	private Icon representedIcon;


/*****************************************************************************/


	public IconButton() {
		this(null);
	}


/*****************************************************************************/


	public IconButton(Icon icon) {
		super();
		setIcon(icon);
	}


/*****************************************************************************/


	public Icon getRepresentedIcon() {
		return representedIcon;
	}


/*****************************************************************************/


	public void setIcon(final Icon icon) {
		if (icon!=null) {
			BufferedImage image = new BufferedImage(16, 16,
									BufferedImage.TYPE_4BYTE_ABGR );
			Graphics2D g2d = (Graphics2D)image.getGraphics();
			g2d.scale(16.0/icon.getIconWidth(), 16.0/icon.getIconHeight());
			icon.paintIcon(this, g2d, 0, 0);
			setText(icon.getClass().toString()); // Before we reassign icon.
			super.setIcon(new ImageIcon(image));
		}
		else {
			setText("<null>");
			super.setIcon(icon); // == null.
		}
		setRepresentedIcon(icon);
	}


/*****************************************************************************/


	private void setRepresentedIcon(Icon icon) {
		this.representedIcon = icon;
	}


/*****************************************************************************/

}