fillpaintframe.java

Java灵感编程1-101之61-80

package fillpaint;

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

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

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

  //Construct the frame
  public fillPaintFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(fillPaintFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("fillPaint 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);
    Paint paint;//声明Paint类
    BufferedImage bufferedImage;//声明图像缓冲区
    Ellipse2D circle;//声明椭圆类
    Graphics2D g2 = (Graphics2D)g;//使用Java 2D
   //使用单色填充
   paint = Color.red; // Color implements Paint
   g2.setPaint(paint);//设置填充类型
   circle = new Ellipse2D.Double(10, 60, 140, 140);//构造一个圆
   g2.fill(circle);//填充圆
    //画出标题
   g2.drawString("使用单色填充",40,230);
   g2.drawString("使用双色过渡填充",200,230);
   g2.drawString("使用图像填充",390,230);
   //使用双色过渡填充
   paint = new GradientPaint(180, 60, Color.red, 280, 160, Color.yellow);//构造GradientPaint类
   g2.setPaint(paint);//设置填充类型
   circle = new Ellipse2D.Double(180, 60, 140, 140);//构造一个圆
   g2.fill(circle);
   //使用图像填充
    Image image = Toolkit.getDefaultToolkit().getImage//构造Image类，得到图像
       ("E:\\jb6exam\\fillPaint\\fillPaint\\src\\fillpaint\\JBXMedium.gif");
    MediaTracker tracker = new MediaTracker(this);
    tracker.addImage(image, 0);//读取图像，并跟踪读过程
    try { tracker.waitForID(0); }
      catch (InterruptedException e) {}
    bufferedImage = new BufferedImage(image.getWidth(null),//构造图像缓冲区
         image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
    Graphics2D bufg = bufferedImage.createGraphics();//取得图像环境拖入到缓冲区
    bufg.drawImage(image, 0, 0, null);//读取图像到缓冲区
    Rectangle2D anchor = new Rectangle2D.Double(0, 0,//设置anchor矩形来表示图像填充的大小
         bufferedImage.getWidth()/3,
         bufferedImage.getHeight()/3);
   paint = new TexturePaint(bufferedImage, anchor);//构造TexturePaint类
   g2.setPaint(paint);//设置填充类型
   circle = new Ellipse2D.Double(350, 60, 140, 140);//构造一个圆
   g2.fill(circle);//填充圆
  }
}