viewimagedialog.java

基于MPEG 7 标准,符合未来语义网架构,很值得参考

/*
 * This file is part of Caliph & Emir.
 *
 * Caliph & Emir 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
 * (at your option) any later version.
 *
 * Caliph & Emir 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 Caliph & Emir; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Copyright statement:
 * --------------------
 * (c) 2002-2005 by Mathias Lux ([e-mail])
 * http://www.juggle.at, http://caliph-emir.sourceforge.net
 */
package at.lux.components;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.geom.AffineTransform;
import java.awt.image.AffineTransformOp;
import java.awt.image.BufferedImage;

/**
 * Description
 *
 * @author Mathias Lux, [e-mail]
 */

public class ViewImageDialog extends JDialog {
    private BufferedImage img;
    private ImageViewPanel panel;
    private JButton rotate;

    public ViewImageDialog(BufferedImage img) {
        this.img = img;
        this.setTitle("View Image");
        rotate = new JButton("rotate");
        rotate.setMnemonic(KeyEvent.VK_R);
        rotate.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                rotateImage();
            }
        });

        JPanel buttonPanel = new JPanel(new FlowLayout());
        buttonPanel.add(rotate);

        panel = new ImageViewPanel(img);
        // this.setSize(640, 480);
        this.getContentPane().add(new JScrollPane(panel), BorderLayout.CENTER);
        this.getContentPane().add(buttonPanel, BorderLayout.SOUTH);
        this.pack();
    }

    private void rotateImage() {
        if (panel.getOp() != null) {
            panel.setOp(null);
            rotate.setText("Rotate");
        } else {
            AffineTransform transform = AffineTransform.getRotateInstance(Math.PI / 2.0);
            AffineTransformOp op = new AffineTransformOp(transform, AffineTransformOp.TYPE_BILINEAR);
            panel.setOp(op);
            rotate.setText("Unrotate");
        }
        this.pack();
        panel.repaint();
    }
}