utility.java

最强手机阅读器Anyview3.0版的界面代码

package com.ismyway.util;

import java.util.Calendar;

import javax.microedition.lcdui.Image;

import com.ismyway.anyview.others.Configure;

public class Utility {
	public final static int INNER = 0; // 文件路径，表示文件在JAR文件中
	public final static int EXTEND = 1; // 文件路径，表示文件在外部在座空间中
	public final static byte PNG = 1;
	public final static byte JPEG = 2;
	public final static byte GIF = 3;

	public final static int byte2int(byte[] b) {
		int value = b[3] & 0xff | (b[2] & 0xff) << 8 | (b[1] & 0xff) << 16 | (b[0] & 0xff) << 24;
		return value;
	}

	public final static int byte2byte(byte[] b) {
		int value = b[0] & 0xff;
		return value;
	}

	public final static String currentDate() {
		Calendar calendar = Calendar.getInstance();
		int year = calendar.get(Calendar.YEAR);
		int month = calendar.get(Calendar.MONTH) + 1;
		int day = calendar.get(Calendar.DATE);
		StringBuffer sb = new StringBuffer();
		sb.append(year).append("-").append(month).append("-").append(day);
		return sb.toString();
	}

	public final static String currentTime() {
		Calendar calendar = Calendar.getInstance();
		int hour = calendar.get(Calendar.HOUR);
		int min = calendar.get(Calendar.MINUTE);
		int sec = calendar.get(Calendar.SECOND);
		int pm = calendar.get(Calendar.AM_PM);
		hour = pm == 1 ? hour + 12 : hour;
		StringBuffer sb = new StringBuffer();
		sb.append(hour < 10 ? "0" : "").append(hour).append(":");
		sb.append(min < 10 ? "0" : "").append(min).append(":");
		sb.append(sec < 10 ? "0" : "").append(sec);
		return sb.toString();
	}

	public final static Image doubleImg(Image img) {
		if (null == img) {
			return null;
		}
		int w = img.getWidth();
		int h = img.getHeight();
		int[] r = new int[w * h];
		img.getRGB(r, 0, w, 0, 0, w, h);
		int[] d = new int[w * h * 4];
		int p = 0;
		for (int row = 0; row < h; row++) {
			for (int col = 0; col < w; col++) {
				int o = row * w * 4 + col * 2;
				d[o] = r[p];
				d[o + 1] = r[p];
				o += w * 2;
				d[o] = r[p];
				d[o + 1] = r[p];
				p++;
			}
		}
		Image image = Image.createRGBImage(d, w * 2, h * 2, true);
		r = d = null;
		Configure.gc();
		return image;
	}

	public final static Image doubleImgAnti(Image img) {
		if (null == img) {
			return null;
		}
		int w = img.getWidth();
		int h = img.getHeight();
		int[] r = new int[w * h];
		img.getRGB(r, 0, w, 0, 0, w, h);
		int nw = 2 * w - 1;
		int nh = 2 * h - 1;
		int[] d = new int[nw * nh];
		for (int i = 0; i < d.length; i++) {
			d[i] = 0xffff0000;
		}
		int p = 0;

		//将点抽开
		for (int row = 0; row < h; row++) {
			for (int col = 0; col < w; col++) {
				int o = 2 * row * nw + 2 * col;
				d[o] = r[p];
				p++;
			}
		}

		//横向羽化
		p = nw;
		for (int row = 0; row < h - 1; row++) {
			for (int col = 0; col < w; col++) {
				int o = (row * 2 + 1) * nw + 2 * col;
				d[o] = avgColor(d[o - nw], d[o + nw]);
			}
		}

		//纵向羽化
		for (int row = 0; row < h; row++) {
			for (int col = 0; col < w - 1; col++) {
				int o = row * 2 * nw + 2 * col + 1;
				d[o] = avgColor(d[o - 1], d[o + 1]);
			}
		}

		//交叉点羽化
		for (int row = 0; row < h - 1; row++) {
			for (int col = 0; col < w - 1; col++) {
				int o = (row * 2 + 1) * nw + 2 * col + 1;
				d[o] = avgColor(d[o - nw], d[o + nw], d[o - 1], d[o + 1]);
			}
		}

		Image image = Image.createRGBImage(d, nw, nh, true);
		r = d = null;
		Configure.gc();
		return image;
	}

	public static int avgColor(int c1, int c2) {
		int a1 = (c1 >> 24) & 0xff;
		int r1 = (c1 >> 16) & 0xff;
		int g1 = (c1 >> 8) & 0xff;
		int b1 = c1 & 0xff;

		int a2 = (c2 >> 24) & 0xff;
		int r2 = (c2 >> 16) & 0xff;
		int g2 = (c2 >> 8) & 0xff;
		int b2 = c2 & 0xff;

		a1 = ((a1 + a2) >> 1) & 0xff;
		r1 = ((r1 + r2) >> 1) & 0xff;
		g1 = ((g1 + g2) >> 1) & 0xff;
		b1 = ((b1 + b2) >> 1) & 0xff;

		int c = a1 << 24 | r1 << 16 | g1 << 8 | b1;
		return c;
	}

	public static int avgColor(int c1, int c2, int c3, int c4) {
		int a1 = (c1 >> 24) & 0xff;
		int r1 = (c1 >> 16) & 0xff;
		int g1 = (c1 >> 8) & 0xff;
		int b1 = c1 & 0xff;

		int a2 = (c2 >> 24) & 0xff;
		int r2 = (c2 >> 16) & 0xff;
		int g2 = (c2 >> 8) & 0xff;
		int b2 = c2 & 0xff;

		int a3 = (c3 >> 24) & 0xff;
		int r3 = (c3 >> 16) & 0xff;
		int g3 = (c3 >> 8) & 0xff;
		int b3 = c3 & 0xff;

		int a4 = (c4 >> 24) & 0xff;
		int r4 = (c4 >> 16) & 0xff;
		int g4 = (c4 >> 8) & 0xff;
		int b4 = c4 & 0xff;

		a1 = ((a1 + a2 + a3 + a4) >> 2) & 0xff;
		r1 = ((r1 + r2 + r3 + r4) >> 2) & 0xff;
		g1 = ((g1 + g2 + g3 + g4) >> 2) & 0xff;
		b1 = ((b1 + b2 + b3 + b4) >> 2) & 0xff;

		int c = a1 << 24 | r1 << 16 | g1 << 8 | b1;
		return c;
	}

	/**
	 * 取得给定文件名的后缀
	 * 如果是文件夹，返回null
	 * @param filename
	 * @return
	 */
	public final static String getSuffix(String filename) {
		String suffix = null;
		if (null == filename || filename.endsWith("/")) {
			return null;
		}

		int off = filename.lastIndexOf('.');
		if (off > 0) {
			suffix = filename.substring(off).toLowerCase();
		}
		return suffix;
	}

	public static Image getScaledImage(Image dispImage, int width, int height) {
		return dispImage;
	}

	/**
	 * 将图片按red, green, blue的增量变换图片
	 * @param img
	 * @param red
	 * @param green
	 * @param blue
	 * @param alpha
	 * @return
	 */
	public final static Image transImage(Image img, int red, int green, int blue, boolean alpha) {
		if (null == img) {
			return null;
		}
		int w = img.getWidth();
		int h = img.getHeight();
		int[] array = new int[w * h];
		img.getRGB(array, 0, w, 0, 0, w, h);
		for (int i = 0; i < array.length; i++) {
			if (array[i] != 0) {
				int a = array[i] >> 24;
				int r = (array[i] >> 16) & 0xff;
				int g = (array[i] >> 8) & 0xff;
				int b = array[i] & 0xff;
				r += red;
				g += green;
				b += blue;
				r = r > 0xff ? 0xff : r;
				r = r < 0 ? 0 : r;
				g = g > 0xff ? 0xff : g;
				g = g < 0 ? 0 : g;
				b = b > 0xff ? 0xff : b;
				b = b < 0 ? 0 : b;
				array[i] = (a << 24) | (r << 16) | (g << 8) | b;
			}
		}
		Image image = Image.createRGBImage(array, w, h, alpha);
		array = null;
		Configure.gc();
		return image;
	}
}