content: package com.xiaochao.lcrapiddevelop.Util;
  
  import android.content.Context;
  import android.graphics.Bitmap;
  import android.graphics.BitmapShader;
  import android.graphics.Canvas;
  import android.graphics.Paint;
  
  import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
  import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
  
  /**
   * glide设置圆形图片
   * 不需要去添加圆形图片控件
   * Glide.transform(new GlideCircleTransform(mContext))
   *也可按照自己的要求修改
   */
  public class GlideCircleTransform extends BitmapTransformation {
  
      public GlideCircleTransform(Context context) {
          super(context);
      }
  
      @Override
      protected Bitmap transform(BitmapPool pool, Bitmap toTransform, int outWidth, int outHeight) {
          return circleCrop(pool, toTransform);
      }
  
      private static Bitmap circleCrop(BitmapPool pool, Bitmap source) {
          if (source == null) return null;
  
          int size = Math.min(source.getWidth(), source.getHeight());
          int x = (source.getWidth() - size) / 2;
          int y = (source.getHeight() - size) / 2;
  
          Bitmap squared = Bitmap.createBitmap(source, x, y, size, size);
  
          Bitmap result = pool.get(size, size, Bitmap.Config.ARGB_8888);
          if (result == null) {
              result = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
          }
  
          Canvas canvas = new Canvas(result);
          Paint paint = new Paint();
          paint.setShader(new BitmapShader(squared, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP));
          paint.setAntiAlias(true);
          float r = size / 2f;
          canvas.drawCircle(r, r, r, paint);
          return result;
      }
  
      @Override
      public String getId() {
          return getClass().getName();
      }
  }
  