制御のJPanelはJFrameのサイズ変更

私はJFrameの中に含まれる他のサイズ変更が可能なのJPanel（ jpanelMidSep）で区切られたまったく同じサイズの2つのサイズ変更可能なのJPanel（ jpanelDarkGrayと jpanelLightGray）を持ちたい

...制御のJPanelはJFrameのサイズ変更

に応じてサイズjpanelDarkGrayの初期の高さjpanelLightGrayは146であり、jpanelMidSepは8である。

JFrameのサイズを変更すると、jpanelDarkGrayの高さがjpanelLightGrayより1単位大きくなることがあります。 jpanelMidSepの高さを1単位（高さをjpanelDarkGrayに1単位減らし、高さをjpanelMidSepに1単位増やすことで、同じサイズに戻したいと思います）。ここで

すべての私のコード：

package thePack; 

import java.awt.Dimension; 
import java.awt.Color; 
import java.awt.event.ComponentAdapter; 
import java.awt.event.ComponentEvent; 
import java.awt.EventQueue; 
import java.util.logging.Level; 
import java.util.logging.Logger; 
import javax.swing.*; 

public class JF_EqualSizeMovingPanels extends JFrame { 

    private JPanel jpanelDarkGray; 
    private JPanel jpanelLightGray; 
    private JPanel jpanelMidSep; 

    public JF_EqualSizeMovingPanels() { 
    initComponents(); 
    } 


    @SuppressWarnings("unchecked") 
    private void initComponents() { 

    jpanelDarkGray = new JPanel(); 
    jpanelMidSep = new JPanel(); 
    jpanelLightGray = new JPanel(); 

    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); 
    addComponentListener(new ComponentAdapter() { 
     public void componentResized(ComponentEvent evt) { 
     formComponentResized(evt); 
     } 
    }); 

    jpanelDarkGray.setBackground(new Color(96, 96, 96)); 

    GroupLayout jpanelDarkGrayLayout = new GroupLayout(jpanelDarkGray); 
    jpanelDarkGray.setLayout(jpanelDarkGrayLayout); 
    jpanelDarkGrayLayout.setHorizontalGroup(
     jpanelDarkGrayLayout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGap(0, 400, Short.MAX_VALUE) 
    ); 
    jpanelDarkGrayLayout.setVerticalGroup(
     jpanelDarkGrayLayout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGap(0, 146, Short.MAX_VALUE) 
    ); 

    jpanelMidSep.setBackground(new Color(128, 128, 128)); 

    GroupLayout jpanelMidSepLayout = new GroupLayout(jpanelMidSep); 
    jpanelMidSep.setLayout(jpanelMidSepLayout); 
    jpanelMidSepLayout.setHorizontalGroup(
     jpanelMidSepLayout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGap(0, 0, Short.MAX_VALUE) 
    ); 
    jpanelMidSepLayout.setVerticalGroup(
     jpanelMidSepLayout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGap(0, 8, Short.MAX_VALUE) 
    ); 

    jpanelLightGray.setBackground(new Color(160, 160, 160)); 

    GroupLayout jpanelLightGrayLayout = new GroupLayout(jpanelLightGray); 
    jpanelLightGray.setLayout(jpanelLightGrayLayout); 
    jpanelLightGrayLayout.setHorizontalGroup(
     jpanelLightGrayLayout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGap(0, 0, Short.MAX_VALUE) 
    ); 
    jpanelLightGrayLayout.setVerticalGroup(
     jpanelLightGrayLayout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGap(0, 146, Short.MAX_VALUE) 
    ); 

    GroupLayout layout = new GroupLayout(getContentPane()); 
    getContentPane().setLayout(layout); 
    layout.setHorizontalGroup(
     layout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addComponent(jpanelDarkGray, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
     .addComponent(jpanelMidSep, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
     .addComponent(jpanelLightGray, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
    ); 
    layout.setVerticalGroup(
     layout.createParallelGroup(GroupLayout.Alignment.LEADING) 
     .addGroup(layout.createSequentialGroup() 
     .addComponent(jpanelDarkGray, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) 
     .addGap(0, 0, 0) 
     .addComponent(jpanelMidSep, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE) 
     .addGap(0, 0, 0) 
     .addComponent(jpanelLightGray, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)) 
    ); 

    pack(); 
    } 

    private void formComponentResized(java.awt.event.ComponentEvent evt) { 
    System.out.println("+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++"); 
    System.out.println(this.getName()+ " - Height:" + this.getHeight() 
     + ", Width:" + this.getWidth()); 
    System.out.println(); 
    System.out.println("jpanelDarkGray - Height:" + jpanelDarkGray.getHeight() 
     + ", Width:" + jpanelDarkGray.getWidth()); 
    System.out.println("jpanelMidSep - Height:" + jpanelMidSep.getHeight() 
     + ", Width:" + jpanelMidSep.getWidth()); 
    System.out.println("jpanelLightGray - Height:" + jpanelLightGray.getHeight() 
     + ", Width:" + jpanelLightGray.getWidth()); 
    int adding = (jpanelDarkGray.getHeight() + jpanelMidSep.getHeight() + jpanelLightGray.getHeight()); 
    System.out.println("Adding:" + adding + ", diff:" + (this.getHeight() - adding)); 
    System.out.println("..........................................................."); 
    if (jpanelDarkGray.getHeight() != jpanelLightGray.getHeight()) { 
     int diff; 
     if (jpanelDarkGray.getHeight() > jpanelLightGray.getHeight()) { 
     diff = jpanelDarkGray.getHeight() - jpanelLightGray.getHeight(); 
     jpanelDarkGray.setSize(jpanelDarkGray.getWidth(), jpanelLightGray.getHeight()); 
//  jpanelDarkGray.setPreferredSize(new Dimension(jpanelDarkGray.getWidth(), 
//   jpanelLightGray.getHeight())); 
     jpanelMidSep.setSize(jpanelMidSep.getWidth(), jpanelMidSep.getHeight() + diff); 
//  jpanelMidSep.setPreferredSize(new Dimension(jpanelMidSep.getWidth(), 
//   jpanelMidSep.getHeight() + diff)); 
     } 
     if (jpanelLightGray.getHeight() > jpanelDarkGray.getHeight()) { 
     diff = jpanelLightGray.getHeight() - jpanelDarkGray.getHeight(); 
     jpanelLightGray.setSize(jpanelLightGray.getWidth(), jpanelDarkGray.getHeight()); 
//  jpanelLightGray.setPreferredSize(new Dimension(jpanelLightGray.getWidth(), 
//   jpanelDarkGray.getHeight())); 
     jpanelMidSep.setSize(jpanelMidSep.getWidth(), jpanelMidSep.getHeight() + diff); 
     jpanelMidSep.setPreferredSize(new Dimension(jpanelMidSep.getWidth(), 
      jpanelMidSep.getHeight() + diff)); 
     } 
    } 
    } 

    public static void main(String args[]) { 
    try { 
     for (UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels()) { 
     if ("Nimbus".equals(info.getName())) { 
      UIManager.setLookAndFeel(info.getClassName()); 
      break; 
     } 
     } 
    } catch (ClassNotFoundException | InstantiationException | 
      IllegalAccessException | UnsupportedLookAndFeelException ex) { 
     Logger.getLogger(JF_EqualSizeMovingPanels.class.getName()).log(Level.SEVERE, null, ex); 
    } 

    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
     new JF_EqualSizeMovingPanels().setVisible(true); 
     } 
    }); 
    } 
}

しかし、あなたはJFormのサイズを変更するたびに、jSepMidの高さは（setPreferredSizeメソッドを使用して）、制御不能に成長するか、目標が（制御可能高さを変更する）に達していません（setSizeメソッドを使用）。

のsetSize方法（JFrameのの高さが奇数である場合、jpanelDarkGrayとjpanelLightGrayの高さは、私は同じを行うことができなかった）を使用して出力。

run: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:338, Width:416 jpanelDarkGray - Height:146, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:146, Width:400 Adding:300, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:338, Width:416 jpanelDarkGray - Height:146, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:146, Width:400 Adding:300, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:354, Width:416 jpanelDarkGray - Height:154, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:154, Width:400 Adding:316, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:331, Width:416 jpanelDarkGray - Height:143, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:142, Width:400 Adding:293, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:331, Width:438 jpanelDarkGray - Height:143, Width:422 jpanelMidSep - Height:8, Width:422 jpanelLightGray - Height:142, Width:422 Adding:293, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:331, Width:457 jpanelDarkGray - Height:143, Width:441 jpanelMidSep - Height:8, Width:441 jpanelLightGray - Height:142, Width:441 Adding:293, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:322, Width:457 jpanelDarkGray - Height:138, Width:441 jpanelMidSep - Height:8, Width:441 jpanelLightGray - Height:138, Width:441 Adding:284, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:326, Width:457 jpanelDarkGray - Height:140, Width:441 jpanelMidSep - Height:8, Width:441 jpanelLightGray - Height:140, Width:441 Adding:288, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:311, Width:457 jpanelDarkGray - Height:133, Width:441 jpanelMidSep - Height:8, Width:441 jpanelLightGray - Height:132, Width:441 Adding:273, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:311, Width:439 jpanelDarkGray - Height:133, Width:423 jpanelMidSep - Height:8, Width:423 jpanelLightGray - Height:132, Width:423 Adding:273, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:311, Width:408 jpanelDarkGray - Height:133, Width:392 jpanelMidSep - Height:8, Width:392 jpanelLightGray - Height:132, Width:392 Adding:273, diff:38 ...........................................................
setPreferredSize方法を使用して出力。

run: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:338, Width:416 jpanelDarkGray - Height:146, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:146, Width:400 Adding:300, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:338, Width:416 jpanelDarkGray - Height:146, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:146, Width:400 Adding:300, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:342, Width:416 jpanelDarkGray - Height:148, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:148, Width:400 Adding:304, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:337, Width:416 jpanelDarkGray - Height:146, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:145, Width:400 Adding:299, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:337, Width:420 jpanelDarkGray - Height:145, Width:404 jpanelMidSep - Height:9, Width:404 jpanelLightGray - Height:145, Width:404 Adding:299, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:337, Width:442 jpanelDarkGray - Height:145, Width:426 jpanelMidSep - Height:9, Width:426 jpanelLightGray - Height:145, Width:426 Adding:299, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:337, Width:430 jpanelDarkGray - Height:145, Width:414 jpanelMidSep - Height:9, Width:414 jpanelLightGray - Height:145, Width:414 Adding:299, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:313, Width:430 jpanelDarkGray - Height:133, Width:414 jpanelMidSep - Height:9, Width:414 jpanelLightGray - Height:133, Width:414 Adding:275, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:317, Width:430 jpanelDarkGray - Height:135, Width:414 jpanelMidSep - Height:9, Width:414 jpanelLightGray - Height:135, Width:414 Adding:279, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:315, Width:430 jpanelDarkGray - Height:134, Width:414 jpanelMidSep - Height:9, Width:414 jpanelLightGray - Height:134, Width:414 Adding:277, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:317, Width:430 jpanelDarkGray - Height:135, Width:414 jpanelMidSep - Height:9, Width:414 jpanelLightGray - Height:135, Width:414 Adding:279, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:318, Width:430 jpanelDarkGray - Height:135, Width:414 jpanelMidSep - Height:9, Width:414 jpanelLightGray - Height:136, Width:414 Adding:280, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:318, Width:447 jpanelDarkGray - Height:140, Width:431 jpanelMidSep - Height:10, Width:431 jpanelLightGray - Height:130, Width:431 Adding:280, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:320, Width:447 jpanelDarkGray - Height:129, Width:431 jpanelMidSep - Height:20, Width:431 jpanelLightGray - Height:133, Width:431 Adding:282, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:322, Width:447 jpanelDarkGray - Height:130, Width:431 jpanelMidSep - Height:24, Width:431 jpanelLightGray - Height:130, Width:431 Adding:284, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:328, Width:447 jpanelDarkGray - Height:133, Width:431 jpanelMidSep - Height:24, Width:431 jpanelLightGray - Height:133, Width:431 Adding:290, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:328, Width:457 jpanelDarkGray - Height:133, Width:441 jpanelMidSep - Height:24, Width:441 jpanelLightGray - Height:133, Width:441 Adding:290, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:328, Width:401 jpanelDarkGray - Height:133, Width:385 jpanelMidSep - Height:24, Width:385 jpanelLightGray - Height:133, Width:385 Adding:290, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:328, Width:401 jpanelDarkGray - Height:133, Width:385 jpanelMidSep - Height:24, Width:385 jpanelLightGray - Height:133, Width:385 Adding:290, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:327, Width:401 jpanelDarkGray - Height:133, Width:385 jpanelMidSep - Height:24, Width:385 jpanelLightGray - Height:132, Width:385 Adding:289, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:327, Width:401 jpanelDarkGray - Height:133, Width:385 jpanelMidSep - Height:24, Width:385 jpanelLightGray - Height:132, Width:385 Adding:289, diff:38 ...........................................................

いくつかの手がかり？

EDIT @chepe_luchoのソリューションをテストする1

は...私のために正常に動作します！

run: +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:338, Width:416 jpanelDarkGray - Height:146, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:146, Width:400 Adding:300, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:343, Width:416 jpanelDarkGray - Height:148, Width:400 jpanelMidSep - Height:8, Width:400 jpanelLightGray - Height:149, Width:400 Adding:305, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:343, Width:422 jpanelDarkGray - Height:148, Width:406 jpanelMidSep - Height:9, Width:406 jpanelLightGray - Height:148, Width:406 Adding:305, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:292, Width:422 jpanelDarkGray - Height:123, Width:406 jpanelMidSep - Height:9, Width:406 jpanelLightGray - Height:122, Width:406 Adding:254, diff:38 ........................................................... +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ frame0 - Height:292, Width:460 jpanelDarkGray - Height:123, Width:444 jpanelMidSep - Height:8, Width:444 jpanelLightGray - Height:123, Width:444 Adding:254, diff:38 ...........................................................

出典

2016-04-17 QA_Col

をユーザーがパネルサイズやコードを変更することができスイングスプリットペインが変化しないように、独自のスプリットペインを構築しようとしていますか？ – DevilsHnd

常に同じサイズ（高さと幅）の2つのパネルが必要です。コンテナ（この場合はJFrame）は自由にサイズ変更可能ですが、jpanelDarkGrayとjpanelLightGrayのサイズは自由ではありませんが、制御されています。 –

'GridBagLayout'には丸めの問題があります。時には、利用可能なスペースにすべてのコンポーネントを表示する方法を決定する必要がある場合があります。 – MadProgrammer

あなたはこのコードをテストする必要があります。

if (jpanelDarkGray.getHeight() != jpanelLightGray.getHeight()) { 
    if (jpanelMidSep.getHeight() == 8) { 
    jpanelMidSep.setPreferredSize(new Dimension(jpanelMidSep.getWidth(), 9)); 
    } 
    if (jpanelMidSep.getHeight() == 9) { 
    jpanelMidSep.setPreferredSize(new Dimension(jpanelMidSep.getWidth(), 8)); 
    } 
}

出典

2016-04-18 01:05:16

コンテナJFrameのGridLayoutを使用できます。行と列を設定します。あなたの場合、2行1列になります。 グリッドレイアウトは、すべてのコンポーネント

jframe.setLayout(new GridLayout(2,1));

に等しい面積を共有するには、フレームとフレームのサイズを変更しようとするグリッドレイアウトを設定してみてください。これは、同じ面積でパネルのサイズを変更します。 setPrefferedSize（）をパネルに使用しないでください。

出典

2016-04-17 05:50:26

OPが望んでいるという事実3つのパラメータは、2つが等しいサイズで、3つ目は（私は可変であると仮定します）、 'GridLayout'は助けになりません – MadProgrammer

制御のJPanelはJFrameのサイズ変更

答えて

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