addareaframe.java

Java灵感编程1-101之61-80

package addarea;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.geom.*;

/**
 * <p>Title: AddArea Demo</p>
 * <p>Description: This is a AddArea Demo</p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: D6-125</p>
 * @author liujun
 * @version 1.0
 */

public class AddAreaFrame extends JFrame {
  JPanel contentPane;
  BorderLayout borderLayout1 = new BorderLayout();

  //Construct the frame
  public AddAreaFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(AddAreaFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("AddArea Frame Demo");
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }
  public void paint(Graphics g) {
    /**@todo: Override this java.awt.Container method*/
    super.paint( g);
      Area area1,area2,area;//声明三个区域
      Graphics2D g2 = (Graphics2D)g;
      g2.setColor(Color.magenta);//设置显示颜色
      //面积1加上面积2
      area1 = new Area(new Rectangle2D.Double(30, 30, 80, 80));
      area2 = new Area(new Ellipse2D.Double(60, 60, 70, 70));
      area = new Area();
      area.add(area1);
      area.add(area2);
      g2.draw(area1);
      g2.draw(area2);
      g2.fill(area);
      g2.drawString("面积1加上面积2",30,180);
      //面积1减去面积2
      int x=1;
      area1 = new Area(new Rectangle2D.Double(30+x*120, 30, 80, 80));
      area2 = new Area(new Ellipse2D.Double(60+x*120, 60, 70, 70));
      area = new Area();
      area.add(area1);
      area.subtract(area2);
      g2.draw(area1);
      g2.draw(area2);
      g2.fill(area);
      g2.drawString("面积1减去面积2",30+x*120,180);
      //面积1与面积2的交集
      x=2;
      area1 = new Area(new Rectangle2D.Double(30+x*120, 30, 80, 80));
      area2 = new Area(new Ellipse2D.Double(60+x*120, 60, 70, 70));
      area = new Area();
      area.add(area1);
      area.intersect(area2);
      g2.draw(area1);
      g2.draw(area2);
      g2.fill(area);
      g2.drawString("面积1与面积2的交集",30+x*120,180);
      //面积1异或面积2
      x=3;
      area1 = new Area(new Rectangle2D.Double(30+x*120, 30, 80, 80));
      area2 = new Area(new Ellipse2D.Double(60+x*120, 60, 70, 70));
      area = new Area();
      area.add(area1);
      area.exclusiveOr(area2);
      g2.draw(area1);
      g2.draw(area2);
      g2.fill(area);
      g2.drawString("面积1异或面积2",30+x*120,180);
  }
}