platform.java

j2me手机图书阅读器

package org.pook.ui.core;

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

/**
 * Provides platform dependent settings for Sun WTK platform
 * 
 * @author Greg Gridin
 */
public class Platform extends Canvas {

	static public final byte PLATFORM_BARTEO = 1;

	static public final byte PLATFORM_LG = 2;

	static public final byte PLATFORM_MOTOROLA = 3;

	static public final byte PLATFORM_MOTOROLA_V = 4;

	static public final byte PLATFORM_NOKIA = 5;

	static public final byte PLATFORM_NOKIA_30 = 6;

	static public final byte PLATFORM_SIEMENS = 7;

	static public final byte PLATFORM_SAMSUNG = 8;

	static public final byte PLATFORM_SONYERICSSON = 9;

	static public final byte PLATFORM_SUN_WTK = 10;

	static public final byte PLATFORM = PLATFORM_SUN_WTK;

	/**
	 * The width in pixels of a screen
	 */
	public static int WIDTH;

	/**
	 * The height in pixels of a screen
	 */
	public static int HEIGHT;

	/**
	 * Indicated whether the phone has hardware support for double buffering for
	 * screen painting
	 */
	public static final boolean DOUBLE_BUFFER = true;

	/**
	 * "No-key" key code
	 */
	public static final int KEY_UNDEFINED = 0;

	public static final int KEY_FULL_MODE = 48;

	/**
	 * Key code for the UP game action.
	 */
	public static final int KEY_UP = -1;

	/**
	 * Key code for the LEFT game action.
	 */
	public static final int KEY_LEFT = -3;

	/**
	 * Key code for the RIGHT game action.
	 */
	public static final int KEY_RIGHT = -4;

	/**
	 * Key code for the DOWN game action.
	 */
	public static final int KEY_DOWN = -2;

	/**
	 * Key code for the FIRE game action.
	 */
	public static final int KEY_FIRE = -5;

	/**
	 * Key code for left soft key
	 */
	public static final int KEY_SOFT_LEFT = -6;

	/**
	 * Key code for right soft key
	 */
	public static final int KEY_SOFT_RIGHT = -7;

	/**
	 * Key code for PHONE_ON key (green button)
	 */
	public static final int KEY_PHONE_ON = -10;

	/**
	 * Key code for PHONE_OFF key (red button)
	 */
	public static final int KEY_PHONE_OFF = -11;

	/**
	 * Key code for CLEAR key
	 */
	public static final int KEY_CLEAR = -8;

	/**
	 * Key code for VOLUME UP key
	 */
	public static final int KEY_VOLUME_UP = KEY_UNDEFINED;

	/**
	 * Key code for VOLUME DOWN key
	 */
	public static final int KEY_VOLUME_DOWN = KEY_UNDEFINED;

	/**
	 * Key code for "fictitious" ENTER key Some phones does not have FIRE
	 * button, we have to find out the replacement
	 */
	public static final int KEY_ENTER = KEY_FIRE;

	public static final int KEY_PAGEUP = 42;

	public static final int KEY_PAGEDOWN = 35;

	public static final int REFRESH = 53;

	protected void paint(Graphics g) {

	}

	static {
		Canvas dummy = new Canvas() {
			
			public void paint(Graphics g) {
				
			}
			/** 当整个屏幕大小改变时候,通知其他屏幕,屏幕大小改变了 **/
			protected    void sizeChanged(int w, int h) {
				if(h>HEIGHT){
					WIDTH = w;
					HEIGHT = h;
				}
				
			}
		};
		dummy. setFullScreenMode(true);
		
		//不知道为什么这里总是不能修正高度
		if(dummy.getHeight() > HEIGHT){
			WIDTH = dummy.getWidth();
			HEIGHT = dummy.getHeight();
		}
		
		dummy = null;
		
		System.out.println("配置正确！");
	}


	public final static long getTotalMemory(){
		long memory = Runtime.getRuntime().totalMemory();
		return memory;
		
	}

	public final static long getfreeMemory(){
		long memory = Runtime.getRuntime().freeMemory();
		return memory;
		
	}
	
	 
	 
} // class PlatformCanvas