swingset2.java

实现了对GUM类型的图像的放大缩小漫游的功能

/*
 * @(#)SwingSet2.java	1.19 99/11/08
 *
 * Copyright (c) 1997-1999 by Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
 * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGES.
 * 
 * This software is not designed or intended for use in on-line control of
 * aircraft, air traffic, aircraft navigation or aircraft communications; or in
 * the design, construction, operation or maintenance of any nuclear
 * facility. Licensee represents and warrants that it will not use or
 * redistribute the Software for such purposes.
 */

import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.border.*;
import javax.swing.colorchooser.*;
import javax.swing.filechooser.*;
import javax.accessibility.*;

import javax.swing.plaf.metal.DefaultMetalTheme;
import javax.swing.plaf.metal.MetalLookAndFeel;

import java.lang.reflect.*;
import java.awt.*;
import java.awt.event.*;
import java.beans.*;
import java.util.*;
import java.io.*;

/**
 * A demo that shows all of the Swing components.
 *
 * @version 1.19 11/08/99
 * @author Jeff Dinkins
 */
public class SwingSet2 extends JPanel {

 


    // Possible Look & Feels
    private String mac      = "com.sun.java.swing.plaf.mac.MacLookAndFeel";
    private String metal    = "javax.swing.plaf.metal.MetalLookAndFeel";
    private String motif    = "com.sun.java.swing.plaf.motif.MotifLookAndFeel";
    private String windows  = "com.sun.java.swing.plaf.windows.WindowsLookAndFeel";

    // The current Look & Feel
    private String currentLookAndFeel = metal;

 

    // The preferred size of the demo
    private int PREFERRED_WIDTH = 680;
    private int PREFERRED_HEIGHT = 640;
    
    // Box spacers
    private Dimension HGAP = new Dimension(1,5);
    private Dimension VGAP = new Dimension(5,1);

    // Resource bundle for internationalized and accessible text
    private ResourceBundle bundle = null;


    // About Box
    private JDialog aboutBox = null;


    // Menus
    private JMenuBar menuBar = null;
    private JMenu themesMenu = null;
    private ButtonGroup lafMenuGroup = new ButtonGroup();
    private ButtonGroup themesMenuGroup = new ButtonGroup();

    // Used only if swingset is an application 
    private static GumViewer frame = null;


    // To debug or not to debug, that is the question
    private boolean DEBUG = true;
    private int debugCounter = 0;

    /**
     * SwingSet2 Constructor
     */
    public SwingSet2(GumViewer in) {
	// Note that the applet may null if this is started as an application
	frame=in;

	// setLayout(new BorderLayout());
	setLayout(new BorderLayout());

	// set the preferred size of the demo
	setPreferredSize(new Dimension(PREFERRED_WIDTH,PREFERRED_HEIGHT));
	menuBar = createMenus();
	add(menuBar, BorderLayout.NORTH);
    }


	public void showAbout()
	{
		if(aboutBox == null) {
		// JPanel panel = new JPanel(new BorderLayout());
		JPanel panel = new AboutPanel(this);
		panel.setLayout(new BorderLayout());

		aboutBox = new JDialog(getFrame(), getString("AboutBox.title"), false);
		aboutBox.getContentPane().add(panel, BorderLayout.CENTER);

		// JButton button = new JButton(getString("AboutBox.ok_button_text"));
		JPanel buttonpanel = new JPanel();
		buttonpanel.setOpaque(false);
		JButton button = (JButton) buttonpanel.add(
		    new JButton(getString("AboutBox.ok_button_text"))
		);
		panel.add(buttonpanel, BorderLayout.SOUTH);

		button.addActionListener(new OkAction(aboutBox));
	    }
	    aboutBox.pack();
	    Point p = getLocationOnScreen();
	    aboutBox.setLocation(p.x + 10, p.y +10);
	    aboutBox.show();
	}
    /**
     * Create menus
     */
    public JMenuBar createMenus() {
	JMenuItem mi;
	// ***** create the menubar ****
	JMenuBar menuBar = new JMenuBar();
	menuBar.getAccessibleContext().setAccessibleName(
	    getString("MenuBar.accessible_description"));

	// ***** create File menu 
	JMenu fileMenu = (JMenu) menuBar.add(new JMenu(getString("FileMenu.file_label")));
        fileMenu.setMnemonic(getMnemonic("FileMenu.file_mnemonic"));
	fileMenu.getAccessibleContext().setAccessibleDescription(getString("FileMenu.accessible_description"));

	createMenuItem(fileMenu, "FileMenu.about_label", "FileMenu.about_mnemonic",
		       "FileMenu.about_accessible_description", new AboutAction(this));

        fileMenu.addSeparator();

	createMenuItem(fileMenu, "FileMenu.open_label", "FileMenu.open_mnemonic",
		       "FileMenu.open_accessible_description", new FileOpenAction(this));

	createMenuItem(fileMenu, "FileMenu.save_label", "FileMenu.save_mnemonic",
		       "FileMenu.save_accessible_description", null);

	createMenuItem(fileMenu, "FileMenu.save_as_label", "FileMenu.save_as_mnemonic",
		       "FileMenu.save_as_accessible_description", null);


	
	    fileMenu.addSeparator();
	    
	    createMenuItem(fileMenu, "FileMenu.exit_label", "FileMenu.exit_mnemonic",
			   "FileMenu.exit_accessible_description", new ExitAction(this)
	    );
	


	// ***** create laf switcher menu 
	JMenu lafMenu = (JMenu) menuBar.add(new JMenu(getString("LafMenu.laf_label")));
        lafMenu.setMnemonic(getMnemonic("LafMenu.laf_mnemonic"));
	lafMenu.getAccessibleContext().setAccessibleDescription(
	    getString("LafMenu.laf_accessible_description"));

	mi = createLafMenuItem(lafMenu, "LafMenu.java_label", "LafMenu.java_mnemonic",
		       "LafMenu.java_accessible_description", metal);
	mi.setSelected(true); // this is the default l&f

	createLafMenuItem(lafMenu, "LafMenu.mac_label", "LafMenu.mac_mnemonic",
		       "LafMenu.mac_accessible_description", mac);

	createLafMenuItem(lafMenu, "LafMenu.motif_label", "LafMenu.motif_mnemonic",
		       "LafMenu.motif_accessible_description", motif);

	createLafMenuItem(lafMenu, "LafMenu.windows_label", "LafMenu.windows_mnemonic",
		       "LafMenu.windows_accessible_description", windows);

	// ***** create themes menu 
	themesMenu = (JMenu) menuBar.add(new JMenu(getString("ThemesMenu.themes_label")));
        themesMenu.setMnemonic(getMnemonic("ThemesMenu.themes_mnemonic"));
	themesMenu.getAccessibleContext().setAccessibleDescription(
	    getString("ThemesMenu.themes_accessible_description"));

	mi = createThemesMenuItem(themesMenu, "ThemesMenu.default_label", "ThemesMenu.default_mnemonic",
		       "ThemesMenu.default_accessible_description", new DefaultMetalTheme());
	mi.setSelected(true); // This is the default theme
	
	createThemesMenuItem(themesMenu, "ThemesMenu.aqua_label", "ThemesMenu.aqua_mnemonic",
		       "ThemesMenu.aqua_accessible_description", new AquaTheme());

	createThemesMenuItem(themesMenu, "ThemesMenu.charcoal_label", "ThemesMenu.charcoal_mnemonic",
		       "ThemesMenu.charcoal_accessible_description", new CharcoalTheme());

	createThemesMenuItem(themesMenu, "ThemesMenu.contrast_label", "ThemesMenu.contrast_mnemonic",
		       "ThemesMenu.contrast_accessible_description", new ContrastTheme());

	createThemesMenuItem(themesMenu, "ThemesMenu.emerald_label", "ThemesMenu.emerald_mnemonic",
		       "ThemesMenu.emerald_accessible_description", new EmeraldTheme());

	createThemesMenuItem(themesMenu, "ThemesMenu.ruby_label", "ThemesMenu.ruby_mnemonic",
		       "ThemesMenu.ruby_accessible_description", new RubyTheme());

	return menuBar;
    }

    /**
     * Creates a generic menu item
     */
    public JMenuItem createMenuItem(JMenu menu, String label, String mnemonic,
			       String accessibleDescription, Action action) {
        JMenuItem mi = (JMenuItem) menu.add(new JMenuItem(getString(label)));
	mi.setMnemonic(getMnemonic(mnemonic));
	mi.getAccessibleContext().setAccessibleDescription(getString(accessibleDescription));
	mi.addActionListener(action);
	if(action == null) {
	    mi.setEnabled(false);
	}
	return mi;
    }

    /**
     * Creates a JRadioButtonMenuItem for the Themes menu
     */