jmimage.java

梦界家园程序开发基底框架

package jm.framework.gui.module;

import java.awt.Image;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.net.URL;

import javax.swing.BorderFactory;
import javax.swing.JLabel;
import javax.swing.SwingConstants;
import javax.swing.border.Border;
import javax.swing.border.CompoundBorder;

import jm.util.JMCheck;

public class JMImage extends JLabel {

	private static final long serialVersionUID = 2584166834338380201L;

	Border defaultBorder = BorderFactory.createEtchedBorder();

	JMIcon icon = null;

	public JMImage(String filename) {
		icon = new JMIcon(filename);
		setDefault();
		setBorder(defaultBorder);
	}

	public JMImage(URL location) {
		icon = new JMIcon(location);
		setDefault();
		setBorder(defaultBorder);
	}

	public JMImage(Image image) {
		icon = new JMIcon(image);
		setDefault();
		setBorder(defaultBorder);
	}

	public JMImage(byte[] imageData) {
		icon = new JMIcon(imageData);
		setDefault();
		setBorder(defaultBorder);
	}

	/**
	 * Sets the border of this component. The <code>Border</code> object is
	 * responsible for defining the insets for the component (overriding any
	 * insets set directly on the component) and for optionally rendering any
	 * border decorations within the bounds of those insets. Borders should be
	 * used (rather than insets) for creating both decorative and non-decorative
	 * (such as margins and padding) regions for a swing component. Compound
	 * borders can be used to nest multiple borders within a single component.
	 * <p>
	 * Although technically you can set the border on any object that inherits
	 * from <code>JComponent</ocde>, the look and
	 * feel implementation of many standard Swing components
	 * doesn't work well with user-set borders.  In general,
	 * when you want to set a border on a standard Swing
	 * component other than <code>JPanel</code> or <code>JLabel</code>,
	 * we recommend that you put the component in a <code>JPanel</code>
	 * and set the border on the <code>JPanel</code>.
	 * <p>
	 * This is a bound property.
	 *
	 * @param border the border to be rendered for this component
	 * @see Border
	 * @see CompoundBorder
	 * @beaninfo
	 *        bound: true
	 *    preferred: true
	 *    attribute: visualUpdate true
	 *  description: The component's border.
	 */
	public void setBorder(Border border) {
		this.defaultBorder = border;
		super.setBorder(defaultBorder);
	}

	private void setDefault() {
		setIcon(icon);

		setHorizontalAlignment(SwingConstants.CENTER);
		setHorizontalTextPosition(SwingConstants.CENTER);

		addMouseListener(new MouseAdapter() {
			/**
			 * Invoked when the mouse has been clicked on a component.
			 */
			public void mouseClicked(MouseEvent e) {

			}

			/**
			 * Invoked when a mouse button has been pressed on a component.
			 */
			public void mousePressed(MouseEvent e) {
				if (e.getButton() == MouseEvent.BUTTON1) {
					setBorder(BorderFactory.createLoweredBevelBorder());
				}
			}

			/**
			 * Invoked when a mouse button has been released on a component.
			 */
			public void mouseReleased(MouseEvent e) {
				setBorder(BorderFactory.createRaisedBevelBorder());
			}

			/**
			 * Invoked when the mouse enters a component.
			 */
			public void mouseEntered(MouseEvent e) {
				setBorder(BorderFactory.createRaisedBevelBorder());
			}

			/**
			 * Invoked when the mouse exits a component.
			 */
			public void mouseExited(MouseEvent e) {
				setBorder(defaultBorder);
			}
		});

	}

	public synchronized void addMouseListener(MouseListener l) {
		super.addMouseListener(l);
	}

	public void setHelp(String iHelp) {
		if (!JMCheck.isNull(iHelp)) {
			setToolTipText(iHelp);
		}
	}
}