swing2d.java~28~

Contains a complete archiver by Haruhiko Okumura. The archiver uses an LZ engine whose output is c

package swingexample;

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

 public class Swing2D extends JApplet {
     final static int maxCharHeight = 15;
     final static int minFontSize = 6;

     final static Color bg = Color.white;
     final static Color fg = Color.black;
     final static Color red = Color.red;
     final static Color white = Color.white;

     final static BasicStroke stroke = new BasicStroke(2.0f);
     final static BasicStroke wideStroke = new BasicStroke(8.0f);

     final static float dash1[] = {10.0f};
     final static BasicStroke dashed = new BasicStroke(1.0f,
                                                   BasicStroke.CAP_BUTT,
                                                   BasicStroke.JOIN_MITER,
                                                   10.0f, dash1, 0.0f);
     Dimension totalSize;
     FontMetrics fontMetrics;

     public void init() {
         setBackground(bg);
         setForeground(fg);
     }

     FontMetrics pickFont(Graphics2D g2, String longString,int xSpace) {
         boolean fontFits = false;
         Font font = g2.getFont();
         FontMetrics fontMetrics = g2.getFontMetrics();
         int size = font.getSize();
         String name = font.getName();
         int style = font.getStyle();

         while ( !fontFits ) {
             if ( (fontMetrics.getHeight() <= maxCharHeight)
                  && (fontMetrics.stringWidth(longString) <= xSpace) ) {
                 fontFits = true;
             }
             else {
                 if ( size <= minFontSize ) {
                     fontFits = true;
                 }
                 else {
                     g2.setFont(font = new Font(name, style, --size));
                     fontMetrics = g2.getFontMetrics();
                 }
             }
         }

         return fontMetrics;
     }

     public void paint(Graphics g) {
         Graphics2D g2 = (Graphics2D) g;
         g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
         Dimension d = getSize();
         int gridWidth = d.width / 6;
         int gridHeight = d.height / 2;
         fontMetrics = pickFont(g2, "填充和模化的路径轨道", gridWidth);
         Color fg3D = Color.lightGray;
         g2.setPaint(fg3D);
         g2.draw3DRect(0, 0, d.width - 1, d.height - 1, true);
         g2.draw3DRect(3, 3, d.width - 7, d.height - 7, false);
         g2.setPaint(fg);

         int x = 5;
         int y = 7;
         int rectWidth = gridWidth - 2*x;
         int stringY = gridHeight - 3 - fontMetrics.getDescent();
         int rectHeight = stringY - fontMetrics.getMaxAscent() - y - 2;
         g2.draw(new Line2D.Double(x, y+rectHeight-1, x + rectWidth, y));
         g2.drawString("2D直线", x, stringY);
         x += gridWidth;

         g2.setStroke(stroke);
         g2.draw(new Rectangle2D.Double(x, y, rectWidth, rectHeight));
         g2.drawString("2D矩形", x, stringY);
         x += gridWidth;

         g2.setStroke(dashed);
         g2.draw(new RoundRectangle2D.Double(x, y, rectWidth,
                                             rectHeight, 10, 10));
         g2.drawString("2D圆角矩形", x, stringY);
         x += gridWidth;

         g2.setStroke(wideStroke);
         g2.draw(new Arc2D.Double(x, y, rectWidth, rectHeight, 90,
                                  135, Arc2D.OPEN));
         g2.drawString("2D扇形", x, stringY);
         x += gridWidth;

         g2.setStroke(stroke);
         g2.draw(new Ellipse2D.Double(x, y, rectWidth, rectHeight));
         g2.drawString("2D椭圆", x, stringY);
         x += gridWidth;

         int x1Points[] = {x, x+rectWidth, x, x+rectWidth};
         int y1Points[] = {y, y+rectHeight, y+rectHeight, y};
         GeneralPath polygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
                                               x1Points.length);
         polygon.moveTo(x1Points[0], y1Points[0]);
         for ( int index = 1; index < x1Points.length; index++ ) {
             polygon.lineTo(x1Points[index], y1Points[index]);
         };
         polygon.closePath();

         g2.draw(polygon);
         g2.drawString("一般路径", x, stringY);
         x = 5;
         y += gridHeight;
         stringY += gridHeight;

         int x2Points[] = {x, x+rectWidth, x, x+rectWidth};
         int y2Points[] = {y, y+rectHeight, y+rectHeight, y};
         GeneralPath polyline = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
                                                x2Points.length);
         polyline.moveTo (x2Points[0], y2Points[0]);
         for ( int index = 1; index < x2Points.length; index++ ) {
             polyline.lineTo(x2Points[index], y2Points[index]);
         };

         g2.draw(polyline);
         g2.drawString("一般路径 (开口)", x, stringY);
         x += gridWidth;

         g2.setPaint(red);
         g2.fill(new Rectangle2D.Double(x, y, rectWidth, rectHeight));
         g2.setPaint(fg);
         g2.drawString("填充的2D矩形", x, stringY);
         x += gridWidth;

         GradientPaint redtowhite = new GradientPaint(x,y,red,x+rectWidth, y,white);
         g2.setPaint(redtowhite);
         g2.fill(new RoundRectangle2D.Double(x, y, rectWidth,
                                             rectHeight, 10, 10));
         g2.setPaint(fg);
         g2.drawString("填充的2D圆角矩形", x, stringY);
         x += gridWidth;

         g2.setPaint(red);
         g2.fill(new Arc2D.Double(x, y, rectWidth, rectHeight, 90,
                                  135, Arc2D.OPEN));
         g2.setPaint(fg);
         g2.drawString("填充的2D扇形", x, stringY);
         x += gridWidth;

         redtowhite = new GradientPaint(x,y,red,x+rectWidth, y,white);
         g2.setPaint(redtowhite);
         g2.fill (new Ellipse2D.Double(x, y, rectWidth, rectHeight));
         g2.setPaint(fg);
         g2.drawString("Filled Ellipse2D", x, stringY);
         x += gridWidth;

         int x3Points[] = {x, x+rectWidth, x, x+rectWidth};
         int y3Points[] = {y, y+rectHeight, y+rectHeight, y};
         GeneralPath filledPolygon = new GeneralPath(GeneralPath.WIND_EVEN_ODD,
                                                     x3Points.length);
         filledPolygon.moveTo(x3Points[0], y3Points[0]);
         for ( int index = 1; index < x3Points.length; index++ ) {
             filledPolygon.lineTo(x3Points[index], y3Points[index]);
         };
         filledPolygon.closePath();
         g2.setPaint(red);
         g2.fill(filledPolygon);
         g2.setPaint(fg);
         g2.draw(filledPolygon);
         g2.drawString("Filled and Stroked GeneralPath", x, stringY);
     }

     public static void main(String s[]) {
         JFrame f = new JFrame("2D图形示例");
         f.addWindowListener(new WindowAdapter() {
             public void windowClosing(WindowEvent e) {System.exit(0);}
         });
         JApplet applet = new Swing2D();
         f.getContentPane().add("Center", applet);
         applet.init();
         f.pack();
         f.setSize(new Dimension(500, 200));
         f.show();
     }
 }