trygridbaglayout.java

用java语言编写的两个网格袋布局管理器

package com.libin.gridbaglayout;

import java.awt.Component;
import java.awt.Container;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class TryGridBagLayout extends JFrame{
	
	
	private Container content;
	private GridBagLayout gbLayout;
	private GridBagConstraints gbConstraints=new GridBagConstraints();
	
	
	
	public TryGridBagLayout(){
		
		this.setTitle("网格袋布局管理器使用");
		this.setBounds(100,150,400,300);
		content=this.getContentPane();
		gbLayout=new GridBagLayout();
		content.setLayout(gbLayout);
		
		
		//创建相应相应的组件
		JTextArea tx1=new JTextArea(8,5);
		tx1.setText("abcdefghigklmnopqrstuvwxyz");
		tx1.setLineWrap(true);
		
		JTextArea tx2=new JTextArea(8,5);
		tx1.setText("abcdefghigklmnopqrstuvwxyz");
		tx1.setLineWrap(true);
		
		JButton b1=new JButton("button1");
		JButton b2=new JButton("button2");
		JButton b3=new JButton("button3");
		
		JTextField tf1=new JTextField("fadfadsfasfasfds");
		
		String [] names={"James","Jhon","Mike"};
		JComboBox combo1=new JComboBox(names);
		
		
		//向容器中添加组件
		gbConstraints.weightx=10;
		gbConstraints.weighty=100;
		gbConstraints.fill=GridBagConstraints.VERTICAL;
		this.addMyComonpent(tx1,0,0,1,3);
		
		
		
		gbConstraints.weightx=100;
		gbConstraints.weighty=20;
		gbConstraints.fill=GridBagConstraints.BOTH;
		this.addMyComonpent(b1,0,1,2,1);
		
		
		gbConstraints.weightx=100;
		gbConstraints.weighty=100;
		gbConstraints.fill=GridBagConstraints.BOTH;
		this.addMyComonpent(b2,1,1,1,1);
		
		
		gbConstraints.weightx=100;
		gbConstraints.weighty=100;
		gbConstraints.fill=GridBagConstraints.BOTH;
		this.addMyComonpent(b3,1,2,1,1);
		
		
		gbConstraints.weightx=100;
		gbConstraints.weighty=20;
		gbConstraints.fill=GridBagConstraints.BOTH;
		this.addMyComonpent(combo1,2,1,2,1);
		
		
		gbConstraints.weightx=10;
		gbConstraints.weighty=50;
		gbConstraints.fill=GridBagConstraints.HORIZONTAL;
		this.addMyComonpent(tf1,3,0,2,1);
		
		
		gbConstraints.weightx=100;
		gbConstraints.weighty=50;
		gbConstraints.fill=GridBagConstraints.BOTH;
		this.addMyComonpent(tx2,3,2,1,1);
		
		
		
		
		
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setResizable(false);
		this.setVisible(true);
		
		
	}
	
	
	/*
	 * 为了添加组件方便，用户自定义一个向容器中添加组件的方法
	 * */
	public void addMyComonpent(Component c,int row,int col,int width,int height){
		
		gbConstraints.gridx=col;
		gbConstraints.gridy=row;
		gbConstraints.gridwidth=width;
		gbConstraints.gridheight=height;
		//让布局管理器对象为组件添加约束对象
		gbLayout.setConstraints(c, gbConstraints);
		//向容器中添加组件
		content.add(c);
	}
	
	

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		
		TryGridBagLayout app=new TryGridBagLayout();
		

	}

}