Java 饼图源码-支持分解

package king.yang; import java.util.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseMotionListener; import java.awt.image.BufferedImage; import java.awt.image.ColorModel; import java.applet.Applet; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; /** * 不想再改了，算了 * @author Administrator * */ public class GraphVersion extends JFrame { int depth; int radius; public static void main(String[] args) { new GraphVersion(); } public GraphVersion() { setSize(600,400); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setVisible(true); //设置窗口显示位置为屏幕中央 Dimension dm = Toolkit.getDefaultToolkit().getScreenSize(); this.setLocation(dm.width/2-this.getWidth()/2, dm.height/2-this.getHeight()/2); float value; String at; //根据屏幕的大小，决定饼图的半径和高度 radius = this.getWidth()>this.getHeight() ? this.getHeight()/3 : this.getWidth()/3; depth = this.getWidth()>this.getHeight() ? this.getHeight()/8 : this.getWidth()/8; //饼图有几块，是什么颜色 at = "1-red,2-green,3-blue,4-yellow"; //画饼图 PieChartCanvas c = new PieChartCanvas(radius, depth); // Create Hashtable to map color name (String) to Color type Hashtable colors = new Hashtable(); colors.put("green", Color.green); colors.put("red", Color.red); colors.put("blue", Color.blue); colors.put("yellow", Color.yellow); colors.put("magenta", Color.magenta); colors.put("cyan", Color.cyan); colors.put("orange", Color.orange); colors.put("pink", Color.pink); colors.put("white", Color.white); colors.put("black", Color.black); // "value-color,value-color,..." StringTokenizer t = new StringTokenizer(at, ","); String s; float values[] = new float[10]; Color myColor[] = new Color[10]; int j=0; int count = 0; int i; while (t.hasMoreTokens()) { s = t.nextToken(); i = s.indexOf('-'); value = Float.valueOf(s.substring(0, i)).floatValue(); values[j] = value; c.addSlice(value, (Color)colors.get(s.substring(i + 1))); myColor[j] = (Color)colors.get(s.substring(i + 1)); j++; count++; } //System.out.println("coutn"+count); add(c,"Center"); JPanel jp1 = new JPanel(); JLabel j1 = new JLabel("销量图"); jp1.add(j1); JPanel jp2 = new JPanel(); add(jp1,"North"); add(jp2,"East"); } } class PieChartCanvas extends Canvas implements MouseListener,MouseMotionListener{ /* ** */ boolean[] isPaint = new boolean[10]; boolean isDoubleClicked = false; Robot robot; static int counter = 0; int moveX = 0; int moveY = 0; int leftExcursion = 40; int downExcursion = 10; final double aspectFudge = 2.5; int radius; int depth; int called = 1; int numSlices = 0; float total = 0; float value[] = new float[10]; Color color[] = new Color[10]; int left = getWidth()/10; int right = getWidth()/10; int top = getHeight()/5; int down = getHeight()/5; int MyWidth = this.getWidth()-left-right;; int MyHeight = this.getHeight()-top-down; Graphics2D offGraphics = null; Image gfxBuff; // BackDeal bd; public PieChartCanvas(int radius, int depth) { this.radius = radius; gfxBuff = new BufferedImage(400, 400, BufferedImage.TYPE_INT_BGR); // bd = new BackDeal(gfxBuff, this); // bd.start(); this.depth = depth; this.addMouseListener(this);//增加监听器 this.addMouseMotionListener(this); for(int i=0; i<10; i++) { isPaint[i] = true; } } //重写update，禁止JVM在擦除背景，在paint中使用双缓冲技术，可以消除闪烁现象 public void update(Graphics g) { paint(g); } public void paint(Graphics g) { // new BackDeal(this).start(); bufferedImageDraw(); Graphics2D g2d = (Graphics2D)g; g2d.drawImage(gfxBuff, 0, 0, null); } public void bufferedImageDraw() { int startAngle; float angle; left = getWidth()/10; right = getWidth()/5; top = getHeight()/5; down = getHeight()/5; RenderingHints qualityHints = new RenderingHints(RenderingHints.KEY_ANTIALIASING,RenderingHints.VALUE_ANTIALIAS_ON); MyWidth = this.getWidth()-left-right;; MyHeight = this.getHeight()-top-down; Dimension d = getSize(); gfxBuff = createImage(d.width, d.height); offGraphics = (Graphics2D)gfxBuff.getGraphics(); //offGraphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.8f)); offGraphics.setRenderingHints(qualityHints); offGraphics.setColor(getBackground()); offGraphics.fillRect(0, 0, d.width, d.height); int step = this.getHeight()/10; int blank = this.getHeight()/20; int myY = this.getHeight()/3; for(int k=0; k<this.numSlices; k++) { offGraphics.setColor(color[k]); offGraphics.fillRect(this.getWidth()-this.getWidth()/8, myY, blank, blank); offGraphics.drawString(Integer.toString((int)value[k])+"月份", this.getWidth()-this.getWidth()/12, myY+step/5); myY += step; } // do the 3d effect for(int x = depth; x >= 1; x--) { startAngle = -45; for(int i = 0; i < numSlices; i++) { offGraphics.setColor(color[i].darker()); angle = Math.round(360 * (value[i] / total)); switch(i) { case 0: if(isPaint[i]) { offGraphics.fillArc(left, top+x, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.fillArc(left+leftExcursion, top+x+downExcursion, MyWidth, MyHeight,startAngle, (int)angle); } break; case 1: if(isPaint[i]) { offGraphics.fillArc(left, top+x, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.fillArc(left+leftExcursion, top+x-downExcursion, MyWidth, MyHeight,startAngle, (int)angle); } break; case 2: if(isPaint[i]) { offGraphics.fillArc(left, top+x, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.fillArc(left-leftExcursion, top+x-downExcursion, MyWidth, MyHeight,startAngle, (int)angle); } break; case 3: if(isPaint[i]) { offGraphics.fillArc(left, top+x, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.fillArc(left-leftExcursion, top+x+downExcursion, MyWidth, MyHeight,startAngle, (int)angle); } break; } startAngle += angle; } } // draw the pie slice startAngle = -45; for(int i = 0; i < numSlices; i++) { offGraphics.setColor(color[i]); angle = Math.round(360 * (value[i] / total)); switch(i) { case 0: if(isPaint[i]) { offGraphics.fillArc(left, top, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.fillArc(left+leftExcursion, top+downExcursion, MyWidth, MyHeight,startAngle, (int)angle); } break; case 1: if(isPaint[i]) { offGraphics.fillArc(left, top, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.fillArc(left+leftExcursion, top-downExcursion, MyWidth, MyHeight,startAngle, (int)angle); } break; case 2: if(isPaint[i]) { offGraphics.fillArc(left, top, MyWidth, MyHeight,startAngle, (int)angle); } else { offGraphics.