Creating Rigid Areas: Strut : Box « Swing

Creating Rigid Areas: Strut : Box « Swing « Java Tutorial

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Java Tutorial » Swing » Box

14. 88. 4. Creating Rigid Areas: Strut

Struts can be two-dimensional, requiring you to specify the width and height of the component;
Or, they can be one-dimensional, requiring you to specify either the width or height.


public static Component createRigidArea(Dimension dimension)



// Two-dimensional

Component rigidArea = Box. createRigidArea(new Dimension(10, 10));

aBox.add(rigidArea);





public static Component createHorizontalStrut(int width)

// One-dimensional: horizontal

Component horizontalStrut = Box. createHorizontalStrut(10);

aBox.add(horizontalStrut);







public static Component createVerticalStrut(int height)

// One-dimensional: vertical

Component verticalStrut = Box. createVerticalStrut(10);

aBox.add(verticalStrut);


import java.awt.GridLayout;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;



import javax.swing.BorderFactory;

import javax.swing.Box;

import javax.swing.BoxLayout;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JPanel;



public class BoxLayoutGlueStrutCompare extends JFrame {



  public BoxLayoutGlueStrutCompare() {

    JPanel p = new JPanel(new GridLayout(3, 1));



    JPanel p1 = new JPanel();

    Box box1 = new Box(BoxLayout.X_AXIS);

    box1.add(Box.createHorizontalGlue());

    box1.add(new JButton("glue-strut"));

    box1.add(Box.createHorizontalStrut(15));

    box1.add(new JButton("strut-glue"));

    box1.add(Box.createHorizontalGlue());

    p1.add(box1);

    p1.setBorder(BorderFactory.createRaisedBevelBorder());



    JPanel p2 = new JPanel();

    Box box2 = new Box(BoxLayout.X_AXIS);

    box2.add(Box.createHorizontalStrut(25));

    box2.add(new JButton("strut-glue"));

    box2.add(Box.createHorizontalGlue());

    box2.add(new JButton("glue-strut"));

    box2.add(Box.createHorizontalStrut(25));

    p2.add(box2);

    p2.setBorder(BorderFactory.createRaisedBevelBorder());



    JPanel p3 = new JPanel();

    Box box3 = new Box(BoxLayout.X_AXIS);

    box3.add(Box.createHorizontalStrut(25));

    box3.add(new JButton("strut-glue"));

    box3.add(Box.createHorizontalGlue());

    box3.add(new JButton("glue-glue"));

    box3.add(Box.createHorizontalGlue());

    p3.add(box3);

    p3.setBorder(BorderFactory.createRaisedBevelBorder());



    p.add(p1);

    p.add(p2);

    p.add(p3);

    getContentPane().add(p);

    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    pack();

  }



  public static void main(String[] args) {

    BoxLayoutGlueStrutCompare ex1 = new BoxLayoutGlueStrutCompare();

    ex1.setVisible(true);

  }

}

14. 88. Box
	14. 88. 1.	Box simplifies working with BoxLayout
	14. 88. 2.	new Box(BoxLayout.Y_AXIS)
	14. 88. 3.	Working with Box.Filler: Glue and Strut
	14. 88. 4.	Creating Rigid Areas: Strut
	14. 88. 5.	Box.createVerticalGlue()

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