JAVA如何制作梯形按钮？

Question

JAVA如何制作梯形按钮？

Answer 1

import java.awt.*; 
import java.awt.geom.*; 
import javax.swing.*; 
import java.awt.event.*; 
public class RoundButton extends JButton { 
    public RoundButton(String label) { 
        super(label); 
              //ÏÂÃæµÄÓï¾ä½²ÊöÕâ¸ö°´Å¥±äΪһ¸öÔ²Ðζø²»ÊÇÍÖÔ²ÐΠ
        Dimension size = getPreferredSize(); 
        size.width = size.height = Math.max(size.width, size.height); 
        setPreferredSize(size); 
        //²»ÈÃJButton»­±³¾°¶øÔÊÐíÎÒÃÇÈ¥»­Ò»¸öÔ²±³¾° 
        setContentAreaFilled(false); 
    } 
    // »­³öÔ²µÄ±³¾°ºÍ±êÇ© 
    protected void paintComponent(Graphics g) { 
        if (getModel().isArmed()) { 
            g.setColor(Color.lightGray); 
        } else { 
            g.setColor(getBackground()); 
        } 
        g.fillOval(0, 0, getSize().width-1, getSize().height-1); 
        // ÔÚ½¹µãÉÏ»­³öÒ»¸ö±êÇ© 
        super.paintComponent(g); 
    } 
    // »­³öÒ»¸ö±ß¿ò 
    protected void paintBorder(Graphics g) { 
        g.setColor(getForeground()); 
        g.drawOval(0, 0, getSize().width-1, getSize().height-1); 
    } 
    // Õì²ìµ¥»÷ÇøÓò 
    Shape shape; 
    public boolean contains(int x, int y) { 
        // Èç¹û°´Å¥¸Ä±äÁ˳ߴ罫ÖØд´½¨Ò»¸öShape 
        if (shape == null || !shape.getBounds().equals(getBounds())) { 
            shape = new Ellipse2D.Float(0, 0, getWidth(), getHeight()); 
                    } 
        return shape.contains(x, y); 
    } 
    // ²âÊÔ 
    public static void main(String[] args) { 
        JButton button1 = new RoundButton("http://www.cn-java.com"); 
        JButton button2 = new RoundButton("»¶Ó­Äã³£À´×ö¿Í"); 
        button1.setBackground(Color.green); 
        button2.setBackground(Color.yellow); 
        // ´´½¨Ò»¸öFramÀ´ÏÔʾÕâ¸ö°´Å¥ 
        JFrame frame = new JFrame(); 
        frame.getContentPane().add(button1); 
        frame.getContentPane().add(button2); 
        frame.getContentPane().setLayout(new FlowLayout()); 
        frame.setSize(450, 350); 
        frame.setVisible(true); 
        //²âÊÔµ¥»÷ʼþ 
        button1.addActionListener(new ActionListener(){ 
                        public void actionPerformed(ActionEvent e){ 
                                System.out.println("you click button1!"); 
                        } 
                                        }); 
        button2.addActionListener(new ActionListener(){ 
                        public void actionPerformed(ActionEvent e){ 
                                System.out.println("you click button2!"); 
                        } 
                });     } 
}

Answer 2

import java.awt.*; 
import java.awt.geom.*; 
import javax.swing.*; 
import java.awt.event.*; 
public class RoundButton extends JButton { 
    public RoundButton(String label) { 
        super(label); 
              
        Dimension size = getPreferredSize(); 
        size.width = size.height = Math.max(size.width, size.height); 
        setPreferredSize(size); 
 
        setContentAreaFilled(false); 
    } 
  
    protected void paintComponent(Graphics g) { 
        if (getModel().isArmed()) { 
            g.setColor(Color.lightGray); 
        } else { 
            g.setColor(getBackground()); 
        } 
        g.fillOval(0, 0, getSize().width-1, getSize().height-1); 
  
        super.paintComponent(g); 
    }     protected void paintBorder(Graphics g) { 
        g.setColor(getForeground()); 
        g.drawOval(0, 0, getSize().width-1, getSize().height-1); 
    }     Shape shape; 
    public boolean contains(int x, int y) { 
  
        if (shape == null || !shape.getBounds().equals(getBounds())) { 
            shape = new Ellipse2D.Float(0, 0, getWidth(), getHeight()); 
                    } 
        return shape.contains(x, y); 
    }     public static void main(String[] args) { 
        JButton button1 = new RoundButton("http://www.cn-java.com"); 
        JButton button2 = new RoundButton("»¶Ó­Äã³£À´×ö¿Í"); 
        button1.setBackground(Color.green); 
        button2.setBackground(Color.yellow); 
    
        JFrame frame = new JFrame(); 
        frame.getContentPane().add(button1); 
        frame.getContentPane().add(button2); 
        frame.getContentPane().setLayout(new FlowLayout()); 
        frame.setSize(450, 350); 
        frame.setVisible(true);         button1.addActionListener(new ActionListener(){ 
                        public void actionPerformed(ActionEvent e){ 
                                System.out.println("you click button1!"); 
                        } 
                                        }); 
        button2.addActionListener(new ActionListener(){ 
                        public void actionPerformed(ActionEvent e){ 
                                System.out.println("you click button2!"); 
                        } 
                });     } 
}