test.java

点阵字库在JAVA中的实现的源代码 点阵信息还原为汉字

import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.image.*;

public class Test extends JFrame {
    byte[] dotfont;
    BufferedImage imgCH;
    int[] verify = {128, 64, 32, 16, 8, 4, 2, 1};
    String test = "点阵汉字的测试";
    int imgWidth = 300;
    int imgHeight = 200;

    public Test() {
        super("DotFont");

        File file = new File("gb.dat");
        try {
            FileInputStream fis = new FileInputStream(file);
            dotfont = new byte[fis.available()];
            fis.read(dotfont);
            fis.close();
        } catch (FileNotFoundException ex) {
        } catch (IOException ex) {
        }

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(300, 240);
        this.show();
    }

    void createCH(byte[] ch, int off) {
        int q1 = ch[off] & 0xff;
        int q2 = ch[off + 1] & 0xff;
        int offset = (q1 - 0xa1) * 94 * 24;
        q2 -= 0xa1;
        offset += q2 * 24;
        imgCH = new BufferedImage(12, 12, BufferedImage.TYPE_INT_RGB);
        for (int h = 0; h < 12; h++) {
            byte b = dotfont[offset++];
            for (int w = 0; w < 8; w++) {
                if ((b & verify[w]) == verify[w]) {
                    imgCH.setRGB(w, h, 0xffffffff);
                } else {
                    imgCH.setRGB(w, h, 0);
                }
            }
            b = dotfont[offset++];
            for (int w = 0; w < 4; w++) {
                if ((b & verify[w]) == verify[w]) {
                    imgCH.setRGB(w + 8, h, 0xffffffff);
                } else {
                    imgCH.setRGB(w + 8, h, 0);
                }
            }
        }
    }

    public void paint(Graphics g) {
        g.setColor(Color.black);
        g.fillRect(0, 0, getWidth(), getHeight());
        byte[] an = str2bytes(test);
        int offset = 0;
        int x = 10, y = 34;
        while (y < imgHeight && offset < an.length) {
            int b = an[offset] & 0xff;
            if (b > 0x7f) {
                createCH(an, offset);
                g.drawImage(imgCH, x, y, null);
                x += 12;
                offset += 2;
            } else { //英文暂时不考虑
                x += 6;
                offset++;
            }
            if (x > imgWidth) {
                x = 10;
                y += 14;
            }
        }
    }

    byte[] str2bytes(String s) {
        if (null == s || "".equals(s)) {
            return null;
        }
        byte[] abytes = null;
        try {
            abytes = s.getBytes("gb2312");
        } catch (UnsupportedEncodingException ex) {
        }
        return abytes;
    }

    public static void main(String[] args) {
        new Test();
    }
}