example6.java

Micro Window Toolkit(MWT)是一个用于开发J2ME用户界面(UI)的工具包。它具有友好

package example;

/*
 * MWT - Micro Window Toolkit
 * Copyright (C) 2007 Lucas Domanico - [e-mail]
 * 
 * Licensed under the terms of the GNU Lesser General Public License:
 * 		http://www.opensource.org/licenses/lgpl-license.php
 * 
 * For further information visit:
 * 		http://j2me-mwt.sourceforge.net/
 */

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Graphics;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

import mwt.Button;
import mwt.Component;
import mwt.EventListener;
import mwt.Window;


// Dynamic Properties
//
class Canvas6 extends Canvas implements Runnable, EventListener {
	Window win = new Window(8,8,100,100);	// the main window -reference-
	Window sub = new Window(4,24,60,60);	// a sub window
	Component panel = new Component(44,4,80,80,true); // component used as a panel
	boolean exit;	// setted to true to finish the application
	static final int ACTION_MOVEUP = 0;	// button's action ids
	static final int ACTION_MOVEDOWN = 1;
	static final int ACTION_MOVERIGHT = 2;
	static final int ACTION_MOVELEFT = 3;
	static final int ACTION_SHRINK = 4;
	static final int ACTION_STRETCH = 5;
	static final int ACTION_ENABLE = 6;
	static final int ACTION_EXIT1 = 7;
	static final int ACTION_EXIT2 = 8;
	
	// notify input
	protected void keyPressed(int keyCode)	{ win.setKeyState(keyCode,Window.KEYSTATE_PRESSED,true); }
	protected void keyReleased(int keyCode) { win.setKeyState(keyCode,Window.KEYSTATE_RELEASED,true); }
	
	// event listener implementation
	public void processEvent(int eventType, Component sender, Object[] args) {
		switch(eventType) {
			case EVENT_ACTION: // when a button is pressed an event action is triggered
				switch(((Button)sender).getActionType()) {
				case ACTION_MOVEUP:		sub.setY(sub.getY()-4); break;
				case ACTION_MOVEDOWN:	sub.setY(sub.getY()+4); break;
				case ACTION_MOVERIGHT:	sub.setX(sub.getX()+4); break;
				case ACTION_MOVELEFT:	sub.setX(sub.getX()-4); break;
				case ACTION_SHRINK:		win.setWidth(win.getWidth()-2);
										win.setHeight(win.getHeight()-2);
										break;
				case ACTION_STRETCH:	win.setWidth(win.getWidth()+2);
										win.setHeight(win.getHeight()+2);
										break;
				case ACTION_ENABLE:		sub.setEnabled(!sub.isEnabled());
										panel.setVisible(!panel.isVisible());
										break;
				case ACTION_EXIT1: exit = true;	break;
				case ACTION_EXIT2: exit = true; return;
				}
				break;
			default: break;
		}
	}
	
	Canvas6() {
		// initialize the window
		win.add(new Button(24,4,16,16,"?",this,ACTION_ENABLE));
		win.add(new Button(4,4,16,16,"X",this,ACTION_EXIT1),0);
		
		panel.add(new Button( 0,0,16,16,"-",this,ACTION_SHRINK));
		panel.add(new Button(20,0,16,16,"+",this,ACTION_STRETCH));
		win.add(panel);
		
		sub.add(new Button(22, 4,16,16,"^",this,ACTION_MOVEUP));
		sub.add(new Button( 4,22,16,16,"<",this,ACTION_MOVELEFT));
		sub.add(new Button(40,22,16,16,">",this,ACTION_MOVERIGHT));
		sub.add(new Button(22,40,16,16,"卢",this,ACTION_MOVEDOWN));
		win.add(sub);
		
		win.setFocusFirst();
	}	
	
	public void run() {
		while(!exit) { // main loop
			win.repeatKeys(true);
			repaint();
			serviceRepaints();
			try { Thread.sleep(1); }
			catch(Exception e) { e.printStackTrace(); }
		}
		Example6.instance.notifyDestroyed();
	}
	
	protected void paint(Graphics g) {
		g.setColor(0xFFFFFFFF);	// clear graphics
		g.fillRect(0,0,getWidth(),getHeight());
		win.paint(g); // and paint the window...
	}
}


public class Example6 extends MIDlet {
	static MIDlet instance;
	protected void startApp() throws MIDletStateChangeException {
		instance = this;
		Canvas6 c = new Canvas6();
		Display.getDisplay(this).setCurrent(c);
		new Thread(c).start();
	}
	protected void pauseApp() { }
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException { }
}