trmenu.java.svn-base

利用J2ME编写的手机应用程序。 功能包括显示图片

package test;

import java.util.Vector;

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

import wFramework.Map;
import wFramework.MapInputListener;
import wFramework.ResultSet;
import wFramework.wFramework;
import wFramework.MapOverlay;

public class TrMenu extends MapOverlay implements MapInputListener
{
	private Map map;
	private wFramework wf;
	private boolean visible;
	
	private int selitem;
	private String mainmenu[];
	private String currentmenu[];

	public TrMenu(wFramework wf, Map map)
	{
		super(map, null, null);
		this.wf = wf;
		this.map = map;
		visible = false;
		
		selitem = 0;
		mainmenu = new String[4];
		mainmenu[0] = "Tags";
		mainmenu[1] = "Fotograf";
		mainmenu[2] = "舝";
		mainmenu[3] = "Avslutt program";
		
		currentmenu = mainmenu;
	}
	
	public void paint(Graphics g)
	{
		g.setColor(0x0);
		if (TrBilde.background != null)
			g.drawImage(TrBilde.background, 0, 0, Graphics.LEFT | Graphics.TOP);
		
		g.drawString("Valg", map.getWidth() / 2, 4, Graphics.HCENTER | Graphics.TOP);
		
		int y = g.getFont().getHeight() + 6;
		int x = 6;
		
		for (int i = 0; i < currentmenu.length; i++)
		{
			if (i == selitem)
				g.setColor(0xC0C0FF);
			else
				g.setColor(0xFFFFFF);
			
			g.fillRoundRect(2, y, map.getWidth() - 5, g.getFont().getHeight(), 8, 8);
			g.setColor(0x808080);
			g.drawRoundRect(2, y, map.getWidth() - 5, g.getFont().getHeight(), 8, 8);			
			g.setColor(0x00);
			g.drawString(currentmenu[i], x, y, Graphics.LEFT | Graphics.TOP);
			y += g.getFont().getHeight();
		}
	}
	
	public void destroyApp(boolean conditional) throws MIDletStateChangeException
	{
		wf.getSession().logout();
	}
	
	public void exitApp()
	{
		try
		{
			destroyApp(true);
		}
		catch (MIDletStateChangeException e)
		{
			
		}
	}
	
	public void toggleVisible()
	{
		if (visible)
			hide();
		else
			show();
	}
	
	public void show()
	{
		if (visible) return;
		visible = true;
		map.addOverlay(this);
		map.addKeyListener(this);
		map.disableCursor();
		map.repaint();
	}
	
	public void hide()
	{
		visible = false;
		map.removeOverlay(this);
		map.removeKeyListener(this);
		map.enableCursor();
		map.repaint();
	}

	public void onKeyPressed(int key) 
	{
		switch (key)
		{
			case Canvas.UP:
				selitem = Math.max(selitem - 1, 0);
				map.repaint();
				break;
			case Canvas.DOWN:
				selitem = Math.min(selitem + 1, currentmenu.length - 1);
				map.repaint();
				break;
			case Canvas.FIRE:
				if (currentmenu == mainmenu)
				{
					switch (selitem)
					{
						case 3:
							Main.instance.exitApp();
							break;
					}
				}
				break;
		}
	}
}