Three FormLayout component sizes: minimum, default and preferred : FormLayout实例 « Swing组件 « Java

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Java 教程
Java » Swing组件 » FormLayout实例屏幕截图 
Three FormLayout component sizes: minimum, default and preferred
Three FormLayout component sizes: minimum, default and   preferred

/*
 * Copyright (c) 2002-2004 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
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 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */



import java.awt.Insets;

import javax.swing.*;
import javax.swing.border.EmptyBorder;

import com.jgoodies.forms.builder.DefaultFormBuilder;
import com.jgoodies.forms.builder.PanelBuilder;
import com.jgoodies.forms.layout.CellConstraints;
import com.jgoodies.forms.layout.FormLayout;

/**
 * Demonstrates the three FormLayout component sizes: minimum, default and 
 * preferred.
 * Min and Pref measure the components minimum and preferred size, where the 
 * Default size behaves like Pref but shrinks if the container space is scarce.
 *
 @author  Karsten Lentzsch
 @version $Revision: 1.8 $
 */
public class ComponentSizesExample {

    
    public static void main(String[] args) {
        try {
            UIManager.setLookAndFeel("com.jgoodies.plaf.plastic.PlasticXPLookAndFeel");
        catch (Exception e) {
            // Likely PlasticXP is not in the class path; ignore.
        }
        JFrame frame = new JFrame();
        frame.setTitle("Forms Tutorial :: Component Sizes");
        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        JComponent panel = new ComponentSizesExample().buildPanel();
        frame.getContentPane().add(panel);
        frame.pack();
        frame.setVisible(true);
    }


    public JComponent buildPanel() {
        JSplitPane splitPane = new JSplitPane(
            JSplitPane.HORIZONTAL_SPLIT,
            true,
            buildCombinedPanel()
            buildTextPanel());
        return splitPane;
    }
    
        
    /**
     * Builds and answer the panel that combines the three sizing panels.
     
     @return the combined panel
     */
    private JComponent buildCombinedPanel() {
        FormLayout layout = new FormLayout(
            "30dlu:grow",
            "pref, 3dlu, pref, 3dlu, pref");
            
        PanelBuilder builder = new PanelBuilder(layout);
        builder.setDefaultDialogBorder();

        CellConstraints cc = new CellConstraints();

        builder.add(buildMinimumSizePanel(),   cc.xy(11));
        builder.add(buildDefaultSizePanel(),   cc.xy(13));
        builder.add(buildPreferredSizePanel(), cc.xy(15));
        
        return builder.getPanel();
    }
    

    private JComponent buildMinimumSizePanel() {
        FormLayout layout = new FormLayout
                "right:max(25dlu;pref), 3dlu, min",
                "pref");
        DefaultFormBuilder builder = new DefaultFormBuilder(layout);
        builder.append("Min"new JTextField(15));
        return builder.getPanel();
    }
    
    private JComponent buildDefaultSizePanel() {
        FormLayout layout = new FormLayout(
                "right:max(25dlu;pref), 3dlu, default",
                "pref");
        DefaultFormBuilder builder = new DefaultFormBuilder(layout);
        builder.append("Default"new JTextField(15));
        return builder.getPanel();
    }
    
    private JComponent buildPreferredSizePanel() {
        FormLayout layout = new FormLayout(
                "right:max(25dlu;pref), 3dlu, pref",
                "pref");
        DefaultFormBuilder builder = new DefaultFormBuilder(layout);
        builder.append("Pref"new JTextField(15));
        return builder.getPanel();
    }
    
    private JComponent buildTextPanel() {
        JTextArea textArea = new JTextArea(520);
        textArea.setEditable(false);
        textArea.setMargin(new Insets(61046));
        textArea.setText("The text field used in the example on the left\n" +
        "has a narrow minimum width and a wider preferred width.\n\n" +
        "If you move the split divider to the left and right\n" +
        "you can see how 'Default' shrinks the field if space is scarce.\n\n" +
        "If there's not enough space for the preferred width\n" 
        "the bottom field will be 'cut' on the right-hand side.");
        JScrollPane scrollpane = new JScrollPane(textArea);
        scrollpane.setBorder(new EmptyBorder(0000));
        return scrollpane;
    }
    
    
}



           
       
forms.zip( 197 k)
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