common.java

来自「很简单的J2ME源码」· Java 代码 · 共 52 行

import javax.microedition.lcdui.Font;
import java.util.Vector;

public class Common {

	public static Vector getSubsection(String strSource,Font font,int width,String strSplit) {
        Vector vector = new Vector();
        String temp=strSource;
        int i,j;
        int LastLength = 1;
        int step = 0;
        try {
            while (!temp.equals("")) {
                i=temp.indexOf("\n");
                if (i > 0) {
                    if (font.stringWidth(temp.substring(0,i-1)) >= width) i = -1;
                }
                if (i == -1) {
                    if (LastLength > temp.length()) i = temp.length();
                    else {
                        i = LastLength;
                        step = font.stringWidth(temp.substring(0, i)) > width ? -1 : 1;
                        if (i < temp.length()) {
                            while (! (font.stringWidth(temp.substring(0, i)) <= width && font.stringWidth(temp.substring(0, i + 1)) > width)) {
                                i = i + step;
                                if (i == temp.length()) break;
                            }
                        }
                    }
                    if (!strSplit.equals("")) {
                        j = i;
                        if (i < temp.length()) {
                            while (strSplit.indexOf(temp.substring(i-1,i))==-1) {
                                i--;
                                if (i == 0) { i = j; break; }
                            }
                        }
                    }
                }
                LastLength = i;
                vector.addElement(temp.substring(0, i));
                if (i == temp.length()) temp = "";
                else {
                    temp = temp.substring(i);
                    if (temp.substring(0, 1).equals("\n")) temp = temp.substring(1);
                }
            }
        }
        catch (Exception e) { }
        return vector;
    }
}