qselector.java

j2me 高级UI

/**
 * 作者：cat 戚永城
 * 时间：2008-3-1
 * QQ：415898635
 * E-Mail：	[e-mail]
 * 			[e-mail]
 * 
 * */
package org.qui.container;
//selector只对确定键抬起做事件反应(按下不作反应)

import org.qui.manager.QItem;
import org.qui.manager.UIManager;

public class QSelector {

	public int br = 189;

	public int bg = 156;

	public int bb = 42;

	public int selected = -1;

	private UIManager ui = null;
	
	public boolean inComboItem=false;
	
	public boolean inInputItem=false;
	
	public boolean inEmComboItem=false;
	
	public boolean inEmInputItem=false;
	
	public boolean enableoffset=false;
	
	public QSelector(UIManager ui,boolean enableoffset) {
		this.ui = ui;
		this.enableoffset=enableoffset;
	}

	public void selectorBack(int pre,int cur) {//类似undo
		ui.getItem(pre).focus=false;
		ui.getItem(cur).focus=true;
		if(enableoffset){
			setoffset(ui.getItem(cur));
		}
	}
	
	public boolean isLast = false;

	public boolean setSelected(int index) {
		selected=index;
		if (selected < (ui.getItemSum() - 1)) {
			isLast = false;
		} else {
			selected=ui.getItemSum()-1;
			isLast = true;
		}
		setFocus(selected);
		QItem item = ui.getItem(selected);
		if(enableoffset){
			setoffset(item);
		}
		return item.isVisible() ;
	}

	public boolean nextElement() {
		if (selected < (ui.getItemSum() - 1)) {
			selected++;
			isLast = false;
		} else {
			selected=ui.getItemSum()-1;
			isLast = true;
		}
		setFocus(selected);
		QItem item = ui.getItem(selected);
		if(enableoffset){
			setoffset(item);
		}
		return item.isVisible() ;
	}

	public boolean preElement() { 
		if (selected > 0) {
			selected--;
			isLast = false;
		} else {
			selected = 0;
			isLast = true;
		}
		setFocus(selected);
		QItem item = ui.getItem(selected);
		if(enableoffset){
			setoffset(item);
		}
		return item.isVisible() ;
	}

	public void setFocus(int index){
		int sum=ui.getItemSum();
		for (int i = 0; i < sum; i++) {
			ui.getItem(i).focus=false;
		}
		ui.getItem(index).focus=true;
	}
	private int lastOffx=0;
	private int lastOffy=0;
	private int curOffx=0;
	private int curOffy=0;	
	private Thread movingThread=null;
	private void setoffset(QItem item) {
		//注销线程
		if(movingThread!=null){
			lastOffx=curOffx;
			lastOffy=curOffy;
			try {
				Thread.sleep(41);
			} catch (InterruptedException e1) {
				// TODO 自动生成 catch 块
				e1.printStackTrace();
			}
			movingThread=null;
		}
		int width=ui.frame.getWidth();
		int height=ui.frame.getHeight();
		int x=item.x+item.width;
		int y=item.y+item.height;
		//移动的时候右下各让出20像素(下方再让出20像素用于Menu)
		lastOffx=ui.offx;
		lastOffy=ui.offy;
		curOffx=0;
		curOffy=0;
		if(x>width){
			curOffx=width-x-20;
		}else{
			curOffx=0;
		}
		if(y>height){
			curOffy=height-y-40;
		}else{
			curOffy=0;
		}
		
		movingThread=new Thread(new Runnable(){

			public void run() {
				// TODO 自动生成方法存根
			
				while(lastOffx!=curOffx || lastOffy!=curOffy){
					if(lastOffx>curOffx){
						lastOffx=lastOffx-5;
						if(lastOffx-curOffx<5){
							lastOffx=curOffx;
						}
					}else if(lastOffx<curOffx){
						lastOffx=lastOffx+5;
						if(curOffx-lastOffx<5){
							lastOffx=curOffx;
						}
					}
					if(lastOffy>curOffy){
						lastOffy=lastOffy-5;
						if(lastOffy-curOffy<5){
							lastOffy=curOffy;
						}
					}else if(lastOffy<curOffy){
						lastOffy=lastOffy+5;
						if(curOffy-lastOffy<5){
							lastOffy=curOffy;
						}
					}
					ui.offx=lastOffx;
					ui.offy=lastOffy;
					ui.frame.repaint();
					try {
						Thread.sleep(40);
					} catch (InterruptedException e) {
						e.printStackTrace();
					}
				}
			}
			
		});
		movingThread.start();
	}
}