content: /*
   * Copyright  2017 [AllenCoder]
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.allen.apputils;
  
  import android.graphics.Bitmap;
  import android.graphics.Canvas;
  import android.graphics.Matrix;
  import android.graphics.Paint;
  import android.graphics.PorterDuff;
  import android.graphics.PorterDuffXfermode;
  import android.graphics.Rect;
  import android.graphics.RectF;
  
  /**
   * Created by allen on 15/8/6.
   */
  public class BitmapUtil {
      private BitmapUtil() {
      }
  
      /**
       * 缩放图片
       *
       * @param sf
       * @return
       */
      public static Bitmap zoom(Bitmap bitmap, float sf) {
          Matrix matrix = new Matrix();
          matrix.postScale(sf, sf);
          return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
      }
  
      /**
       * 缩放图片
       */
      public static Bitmap zoom(Bitmap bitmap, float wf, float hf) {
          Matrix matrix = new Matrix();
          matrix.postScale(wf, hf);
          return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
      }
  
      /**
       * 图片圆角处理
       *
       * @param bitmap
       * @param roundPX
       * @return
       */
  
      public static Bitmap getRCB(Bitmap bitmap, float roundPX) {
          Bitmap dstbmp = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
          Canvas canvas = new Canvas(dstbmp);
          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);//矩形
          paint.setAntiAlias(true);
          canvas.drawARGB(0, 0, 0, 0);
          paint.setColor(color);
          canvas.drawRoundRect(rectf, roundPX, roundPX, paint);
          paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
          canvas.drawBitmap(bitmap, rect, rect, paint);
          return dstbmp;
  
      }
  }
  