infolistcanvas.java

J2ME上的一个播放器,可以更换皮肤.开源软件.

package inline.ui;

import inline.ui.*;
import inline.sys.*;
import java.util.*;
import javax.microedition.lcdui.*;
import inline.ui.le.*;
import inline.sys.*;

public class InfoListCanvas extends ListFormCanvas 
{
    private String text;
    
    public InfoListCanvas(HostCanvas pprevious, String caption, String ttext)
    {
	super(pprevious, caption, Base.getText(0x0501),"");
	
	text = ttext;
	fillList(text);
    }
    
    private void fillList(String text)
    {
	Vector vct = new Vector();
	
	int dw = list.getWidth();
	if (dw == 0) return;
	
	Font fn = list.getFont();
	
	char[] ca = new char[text.length()];
	text.getChars(0, text.length(), ca, 0);
	
	int ls = 0; // line start position
	int ps = 0; // ps - previous space position
	
	for(int i=0;i<ca.length;i++)
	{
	    if (ca[i] == ' ' || ca[i] == '/' || ca[i] == '\n') 
	    {
		int te = fn.charsWidth(ca, ls, i-ls);
		if (te > dw) 
		{
		    String txx = new String(ca, ls, ps-ls).trim();
		    vct.addElement(new StringElement(txx));
		    
		    ls = ps;
		}
		    
		ps = i;
	    }

	    if (ca[i] == '\n')
	    {
		String txx = new String(ca, ls, i-ls).trim();
		vct.addElement(new StringElement(txx));
		
		ps = i;
		ls = i;
	    }
	}
	
	if (ls<ca.length)
	{
	    String txx = new String(ca, ls, ca.length-ls).trim();
	    if (txx.length()>0) vct.addElement(new StringElement(txx));
	}
	
	list.setLines(vct);
    }

    protected void sizeChanged(int w, int h)
    {
	super.sizeChanged(w,h);
	fillList(text);
    }
}