package com.wise.pubclas;
import java.io.ByteArrayOutputStream;
import android.content.Context;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.Bitmap.Config;
import android.graphics.PorterDuff.Mode;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.widget.ImageView;
public class BlurImage {
/**
* 圆形图片
* @param bitmap
* @return
*/
public static Bitmap getRoundedCornerBitmap(Bitmap bitmap) {
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(), Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
final RectF rectF = new RectF(rect);
final float roundPx = bitmap.getWidth() / 2;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(bitmap, rect, rect, paint);
return output;
}
/**
* 获取正方形图片
* @param bitmap
* @return
*/
public static Bitmap getSquareBitmaps(Bitmap bitmap){
int imageWidth = bitmap.getWidth();
int imageHeight = bitmap.getHeight();
Log.e("imageWidth",imageWidth+""); // 640
Log.e("imageHeight",imageHeight+""); // 480
int y = 0;
Bitmap image = null;
if(imageHeight > imageWidth){
y = (imageHeight - imageWidth)/2;
image = Bitmap.createBitmap(bitmap, 0, y, imageWidth, imageWidth);
}else{
y = (imageWidth - imageHeight)/2;
image = Bitmap.createBitmap(bitmap, y, 0, imageHeight, imageHeight);
}
return image;
}
public static Bitmap getSquareBitmap(Bitmap bitmap){
int imageWidth = bitmap.getWidth();
int imageHeight = bitmap.getHeight();
int y = 0;
Bitmap image = null;
if(imageHeight > imageWidth){
y = (imageHeight - imageWidth)/2;
image = Bitmap.createBitmap(bitmap, 0, y, imageWidth, imageWidth);
}else{
y = (imageWidth - imageHeight)/2;
image = Bitmap.createBitmap(bitmap, y, 0, imageHeight, imageHeight);
}
return image;
}
/**
* 缩小图片
* @param Path 文件sd卡路径
* @param reqWidth 缩小的宽度
* @param reqHeight 缩小的高度
* @return
*/
public static Bitmap decodeSampledBitmapFromPath(String Path, int reqWidth, int reqHeight) {
// 第一次解析将inJustDecodeBounds设置为true，来获取图片大小
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
//BitmapFactory.decodeResource(res, resId, options);
BitmapFactory.decodeFile(Path, options);
// 调用上面定义的方法计算inSampleSize值
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// 使用获取到的inSampleSize值再次解析图片
options.inJustDecodeBounds = false;
return BitmapFactory.decodeFile(Path, options);
}
public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight) {
// 第一次解析将inJustDecodeBounds设置为true，来获取图片大小
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeResource(res, resId, options);
// 调用上面定义的方法计算inSampleSize值
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// 使用获取到的inSampleSize值再次解析图片
options.inJustDecodeBounds = false;
return BitmapFactory.decodeResource(res, resId, options);
}
/**
* 计算缩放尺寸
* @param options
* @param reqWidth
* @param reqHeight
* @return
*/
public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
// 源图片的高度和宽度
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if(height > width){//竖着拍
if (height > reqHeight || width > reqWidth) {
// 计算出实际宽高和目标宽高的比率
final int heightRatio = Math.round((float) height / (float) reqHeight);
final int widthRatio = Math.round((float) width / (float) reqWidth);
// 选择宽和高中最小的比率作为inSampleSize的值，这样可以保证最终图片的宽和高
// 一定都会大于等于目标的宽和高。
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
}else{//横这拍
if (height > reqWidth || width > reqHeight) {
// 计算出实际宽高和目标宽高的比率
final int heightRatio = Math.round((float) height / (float) reqWidth);
final int widthRatio = Math.round((float) width / (float) reqHeight);
// 选择宽和高中最小的比率作为inSampleSize的值，这样可以保证最终图片的宽和高
// 一定都会大于等于目标的宽和高。
inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
}
}
return inSampleSize;
}
/** 水平方向模糊度 */
private static float hRadius = 5;
/** 竖直方向模糊度 */
private static float vRadius = 5;
/** 模糊迭代度 */
private static int iterations = 5;
/**
* 高斯模糊
* @param bmp
* @return
*/
public static Bitmap BoxBlurFilter(Bitmap bmp) {
int width = bmp.getWidth();
int height = bmp.getHeight();
int[] inPixels = new int[width * height];
int[] outPixels = new int[width * height];
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
bmp.getPixels(inPixels, 0, width, 0, 0, width, height);
for (int i = 0; i < iterations; i++) {
blur(inPixels, outPixels, width, height, hRadius);
blur(outPixels, inPixels, height, width, vRadius);
}
blurFractional(inPixels, outPixels, width, height, hRadius);
blurFractional(outPixels, inPixels, height, width, vRadius);
bitmap.setPixels(inPixels, 0, width, 0, 0, width, height);
//Drawable drawable = new BitmapDrawable(bitmap);
return bitmap;
}
public static void blur(int[] in, int[] out, int width, int height,
float radius) {
int widthMinus1 = width - 1;
int r = (int) radius;
int tableSize = 2 * r + 1;
int divide[] = new int[256 * tableSize];
for (int i = 0; i < 256 * tableSize; i++)
divide[i] = i / tableSize;
int inIndex = 0;
for (int y = 0; y < height; y++) {
int outIndex = y;
int ta = 0, tr = 0, tg = 0, tb = 0;
for (int i = -r; i <= r; i++) {
int rgb = in[inIndex + clamp(i, 0, width - 1)];
ta += (rgb >> 24) & 0xff;
tr += (rgb >> 16) & 0xff;
tg += (rgb >> 8) & 0xff;
tb += rgb & 0xff;
}
for (int x = 0; x < width; x++) {
out[outIndex] = (divide[ta] << 24) | (divide[tr] << 16)
| (divide[tg] << 8) | divide[tb];
int i1 = x + r + 1;
if (i1 > widthMinus1)
i1 = widthMinus1;
int i2 = x - r;
if (i2 < 0)
i2 = 0;
int rgb1 = in[inIndex + i1];
int rgb2 = in[inIndex + i2];
ta += ((rgb1 >> 24) & 0xff) - ((rgb2 >> 24) & 0xff);
tr += ((rgb1 & 0xff0000) - (rgb2 & 0xff0000)) >> 16;
tg += ((rgb1 & 0xff00) - (rgb2 & 0xff00)) >> 8;
tb += (rgb1 & 0xff) - (rgb2 & 0xff);
outIndex += height;
}
inIndex += width;
}
}
public static void blurFractional(int[] in, int[] out, int width,
int height, float radius) {
radius -= (int) radius;
float f = 1.0f / (1 + 2 * radius);
int inIndex = 0;
for (int y = 0; y < height; y++) {
int outIndex = y;
out[outIndex] = in[0];
outIndex += height;
for (int x = 1; x < width - 1; x++) {
int i = inIndex + x;
int rgb1 = in[i - 1];
int rgb2 = in[i];
int rgb3 = in[i + 1];
int a1 = (rgb1 >> 24) & 0xff;
int r1 = (rgb1 >> 16) & 0xff;
int g1 = (rgb1 >> 8) & 0xff;
int b1 = rgb1 & 0xff;
int a2 = (rgb2 >> 24) & 0xff;
int r2 = (rgb2 >> 16) & 0xff;
int g2 = (rgb2 >> 8) & 0xff;
int b2 = rgb2 & 0xff;
int a3 = (rgb3 >> 24) & 0xff;
int r3 = (rgb3 >> 16) & 0xff;
int g3 = (rgb3 >> 8) & 0xff;
int b3 = rgb3 & 0xff;
a1 = a2 + (int) ((a1 + a3) * radius);
r1 = r2 + (int) ((r1 + r3) * radius);
g1 = g2 + (int) ((g1 + g3) * radius);
b1 = b2 + (int) ((b1 + b3) * radius);
a1 *= f;
r1 *= f;
g1 *= f;
b1 *= f;
out[outIndex] = (a1 << 24) | (r1 << 16) | (g1 << 8) | b1;
outIndex += height;
}
out[outIndex] = in[width - 1];
inIndex += width;
}
}
/**
* 图片缩放
*/
public static Bitmap zoomImg(String pathName, int newWidth ,int newHeight){
Bitmap bm = BitmapFactory.decodeFile(pathName);
// 获得图片的宽高
int width = bm.getWidth();
int height = bm.getHeight();
// 计算缩放比例
float scaleWidth = ((float) newWidth) / width;
float scaleHeight = ((float) newHeight) / height;
// 取得想要缩放的matrix参数
Matrix matrix = new Matrix();
matrix.postScale(scaleWidth, scaleWidth);
// 得到新的图片
Bitmap newbm = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, true);
return newbm;
}
public static int clamp(int x, int a, int b) {
return (x < a) ? a : (x > b) ? b : x;
}
}