tools.java

《神州》RPG游戏引擎

//分割文字的工具类
import java.util.*;

import javax.microedition.lcdui.*;
import java.io.*;


public class Tools {
    private static int LT = Graphics.LEFT | Graphics.TOP;
    private static int CC = Graphics.HCENTER | Graphics.VCENTER;
    private static Font myFont=Font.getFont(Font.FACE_SYSTEM,Font.STYLE_PLAIN,Font.SIZE_SMALL);

    /*
    //根据指定字数分割文字成若干段
    public static String[] splitStringOld(String msg,int len)
    {
        if(len<=0)return null;
        if(msg==null || msg.equals(""))return new String[]{""};

        Vector fontVC=new Vector();
        int beginIndex=0;
        while(beginIndex<msg.length())
        {
            int endIndex=beginIndex+len;
            if(endIndex>msg.length())
            {
                endIndex=msg.length();
            }
            String sub=msg.substring(beginIndex,endIndex);
            fontVC.addElement(sub);
            beginIndex=endIndex;
        }
        if(fontVC.size()>0)
        {
            String[] st=new String[fontVC.size()];
            for(int i=0;i<fontVC.size();i++)
            {
                st[i]=(String)fontVC.elementAt(i);
            }
            return st;
        }
        else
        {
        return null;
        }

    }
    */
    //根据指定宽度分割文字成若干段
    public static String[] splitString(String msg,int width)
    {
        if(width<=0)return null;
        if(msg==null || msg.equals(""))return new String[]{""};

        Vector fontVC=new Vector();
        int beginIndex=0;
        StringBuffer sb=new StringBuffer("");
        while(beginIndex<msg.length())
        {
            sb.append(msg.charAt(beginIndex));

            if(myFont.stringWidth(sb.toString())>width)
            {
                sb.deleteCharAt(sb.length()-1);
                fontVC.addElement(sb.toString());
                //msg=msg.substring(beginIndex);
                sb.delete(0,sb.length());
                beginIndex--;
            }
            beginIndex++;
        }
        if(sb.length()>0)
        {
            fontVC.addElement(sb.toString());
        }
        if(fontVC.size()>0)
        {
            String[] st=new String[fontVC.size()];
            for(int i=0;i<fontVC.size();i++)
            {
                st[i]=(String)fontVC.elementAt(i);
            }
            return st;
        }
        else
        {
        return null;
        }

    }

    //检查两个盒子是否相交
    public static boolean checkBoxInter(int x1,int y1,int w1,int h1,int x2,int y2,int w2,int h2)
    {
        //x1,y1;x1+w1,y1;x1,y1+h1;x1+w1,y1+h1
        //x2,y2;x2+w2,y2;x2,y2+h2;x2+w2,y2+h2
        //System.out.println("x1="+x1+",y1="+y1+",w1="+w1+",h1="+h1+",x2="+x2+",y2="+y2+",w2="+w2+",h2="+h2);
        if(x1>=x2 && x1<=x2+w2 && y1>=y2 && y1<=y2+h2)return true;
        if(x1+w1>=x2 && x1+w1<=x2+w2 && y1>=y2 && y1<=y2+h2)return true;
        if(x1>=x2 && x1<=x2+w2 && y1+h1>=y2 && y1+h1<=y2+h2)return true;
        if(x1+w1>=x2 && x1+w1<=x2+w2 && y1+h1>=y2 && y1+h1<=y2+h2)return true;

        if(x2>=x1 && x2<=x1+w1 && y2>=y1 && y2<=y1+h1)return true;
        if(x2+w2>=x1 && x2+w2<=x1+w1 && y2>=y1 && y2<=y1+h1)return true;
        if(x2>=x1 && x2<=x1+w1 && y2+h2>=y1 && y2+h2<=y1+h1)return true;
        if(x2+w2>=x1 && x2+w2<=x1+w1 && y2+h2>=y1 && y2+h2<=y1+h1)return true;
        return false;
    }

    //检查两个盒子是否相交
    public static boolean checkBoxInter(Box box1,Box box2)
    {
        return checkBoxInter(box1.x,box1.y,box1.w,box1.h,box2.x,box2.y,box2.w,box2.h);

    }

    //取得图片对象
    public static Image getImage(String str)
    {
        Image img=null;
        try {
          img = Image.createImage(str);
        }
        catch (Exception ex) {
          System.out.println(ex);
        }        
        return img;
      }

    //从一张图片中绘制一个区域到Canvas
    public static void drawRegion(Graphics g,Image img,int x_src,int y_src,int width,int height,int x_dest,int y_dest,int anchor)
    {
        //System.out.println("g.getClipX()="+g.getClipX());
        //System.out.println("g.getClipY()="+g.getClipY());
        //System.out.println("g.getClipWidth()="+g.getClipWidth());
        //System.out.println("g.getClipHeight()="+g.getClipHeight());
        int clipX=g.getClipX();
        int clipY=g.getClipY();
        int clipWidth=g.getClipWidth();
        int clipHeight=g.getClipHeight();
        if(anchor==CC)
        {
        g.setClip(x_dest-width/2,y_dest-height/2,width,height);
        g.drawImage(img,x_dest-width/2-x_src,y_dest-height/2-y_src,LT);
        }
        if(anchor==LT)
        {
        g.setClip(x_dest,y_dest,width,height);
        g.drawImage(img,x_dest-x_src,y_dest-y_src,LT);
        }

        g.setClip(clipX,clipY,clipWidth,clipHeight);

    }
    public static Date getDateByDateStr(String dateStr)
    {
        int y=0;
        int M=0;
        int d=0;
        int h=0;
        int m=0;
        int s=0;

        int blankIndex=dateStr.indexOf(" ");
        if(blankIndex==-1)  //没有时分秒
        {
            int yIndex=dateStr.indexOf("-");
            y=Integer.parseInt(dateStr.substring(0,yIndex));
            int MIndex=dateStr.indexOf("-",yIndex+1);
            M=Integer.parseInt(dateStr.substring(yIndex+1,MIndex));
            d=Integer.parseInt(dateStr.substring(MIndex+1));
        }
        else
        {
            int yIndex=dateStr.indexOf("-");
            y=Integer.parseInt(dateStr.substring(0,yIndex));
            int MIndex=dateStr.indexOf("-",yIndex+1);
            M=Integer.parseInt(dateStr.substring(yIndex+1,MIndex));
            d=Integer.parseInt(dateStr.substring(MIndex+1,blankIndex));

            int hIndex=dateStr.indexOf(":",blankIndex+1);
            h=Integer.parseInt(dateStr.substring(blankIndex+1,hIndex));
            int mIndex=dateStr.indexOf(":",hIndex+1);
            m=Integer.parseInt(dateStr.substring(hIndex+1,mIndex));
            s=Integer.parseInt(dateStr.substring(mIndex+1));
        }
        /*
        System.out.println(dateStr);
        System.out.println(y);
        System.out.println(M-1);
        System.out.println(d);
        System.out.println(h);
        System.out.println(m);
        System.out.println(s);
        */

        Calendar cal=Calendar.getInstance();
        cal.set(Calendar.YEAR,y);
        cal.set(Calendar.MONTH,M-1);
        cal.set(Calendar.DAY_OF_MONTH,d);
        cal.set(Calendar.HOUR_OF_DAY,h);
        cal.set(Calendar.MINUTE,m);
        cal.set(Calendar.SECOND,s);

        Date date=cal.getTime();
        return date;
    }

    public static String getUTFStr(byte[] args)
    {
        String str = "";

        try {
            str = new String(args, 0, args.length, "UTF-8");
        }
        catch (UnsupportedEncodingException ex)
        {
            //ex.printStackTrace();
        }


        return str;
    }

    public static byte[] getUTFByte(String str)
    {
        byte[] b = null;
        try {
            b = str.getBytes("UTF-8");
        }
        catch (UnsupportedEncodingException ex) {
            b = str.getBytes();
        }

        return b;
    }
}