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@@ -0,0 +1,125 @@
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+package com.sheep.gamegroup.util.glide;
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+
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+import android.content.Context;
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+import android.graphics.Bitmap;
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+import android.graphics.BitmapShader;
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+import android.graphics.Canvas;
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+import android.graphics.Matrix;
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+import android.graphics.Paint;
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+import android.graphics.RectF;
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+import android.graphics.Shader;
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+import android.support.annotation.NonNull;
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+
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+import com.bumptech.glide.Glide;
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+import com.bumptech.glide.load.engine.Resource;
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+import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
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+import com.bumptech.glide.load.resource.bitmap.BitmapResource;
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+import com.bumptech.glide.load.resource.bitmap.BitmapTransformation;
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+
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+import java.security.MessageDigest;
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+
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+
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+/**
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+ * Created by realicing on 2018/8/8.
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+ * realicing@sina.com
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+ */
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+public class CornerTransform extends BitmapTransformation {
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+
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+
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+ private float radius;
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+
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+ private boolean exceptLeftTop, exceptRightTop, exceptLeftBottom, exceptRightBotoom;
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+
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+ /**
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+ * 除了那几个角不需要圆角的
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+ *
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+ * @param leftTop
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+ * @param rightTop
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+ * @param leftBottom
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+ * @param rightBottom
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+ */
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+ public void setExceptCorner(boolean leftTop, boolean rightTop, boolean leftBottom, boolean rightBottom) {
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+ this.exceptLeftTop = leftTop;
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+ this.exceptRightTop = rightTop;
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+ this.exceptLeftBottom = leftBottom;
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+ this.exceptRightBotoom = rightBottom;
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+ }
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+
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+ public CornerTransform(Context context, float radius) {
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+ this.radius = radius;
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+ }
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+
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+
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+ @Override
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+ protected Bitmap transform(@NonNull BitmapPool pool, @NonNull Bitmap source, int outWidth, int outHeight) {
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+ int finalWidth, finalHeight;
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+ float ratio; //输出目标的宽高或高宽比例
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+ if (outWidth > outHeight) { //输出宽度>输出高度,求高宽比
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+ ratio = (float) outHeight / (float) outWidth;
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+ finalWidth = source.getWidth();
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+ finalHeight = (int) ((float) source.getWidth() * ratio); //固定原图宽度,求最终高度
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+ if (finalHeight > source.getHeight()) { //求出的最终高度>原图高度,求宽高比
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+ ratio = (float) outWidth / (float) outHeight;
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+ finalHeight = source.getHeight();
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+ finalWidth = (int) ((float) source.getHeight() * ratio);//固定原图高度,求最终宽度
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+ }
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+ } else if (outWidth < outHeight) { //输出宽度 < 输出高度,求宽高比
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+ ratio = (float) outWidth / (float) outHeight;
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+ finalHeight = source.getHeight();
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+ finalWidth = (int) ((float) source.getHeight() * ratio);//固定原图高度,求最终宽度
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+ if (finalWidth > source.getWidth()) { //求出的最终宽度 > 原图宽度,求高宽比
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+ ratio = (float) outHeight / (float) outWidth;
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+ finalWidth = source.getWidth();
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+ finalHeight = (int) ((float) source.getWidth() * ratio);
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+ }
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+ } else { //输出宽度=输出高度
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+ finalHeight = source.getHeight();
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+ finalWidth = finalHeight;
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+ }
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+
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+ //修正圆角
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+ this.radius *= (float) finalHeight / (float) outHeight;
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+ Bitmap outBitmap = pool.get(finalWidth, finalHeight, Bitmap.Config.ARGB_8888);
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+
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+ Canvas canvas = new Canvas(outBitmap);
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+ Paint paint = new Paint();
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+ //关联画笔绘制的原图bitmap
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+ BitmapShader shader = new BitmapShader(source, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
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+ //计算中心位置,进行偏移
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+ int width = (source.getWidth() - finalWidth) / 2;
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+ int height = (source.getHeight() - finalHeight) / 2;
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+ if (width != 0 || height != 0) {
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+ Matrix matrix = new Matrix();
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+ matrix.setTranslate((float) (-width), (float) (-height));
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+ shader.setLocalMatrix(matrix);
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+ }
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+
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+ paint.setShader(shader);
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+ paint.setAntiAlias(true);
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+ RectF rectF = new RectF(0.0F, 0.0F, (float) canvas.getWidth(), (float) canvas.getHeight());
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+ canvas.drawRoundRect(rectF, this.radius, this.radius, paint); //先绘制圆角矩形
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+
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+ if (exceptLeftTop) { //左上角不为圆角
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+ canvas.drawRect(0, 0, radius, radius, paint);
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+ }
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+ if (exceptRightTop) {//右上角不为圆角
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+ canvas.drawRect(canvas.getWidth() - radius, 0, radius, radius, paint);
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+ }
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+
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+ if (exceptLeftBottom) {//左下角不为圆角
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+ canvas.drawRect(0, canvas.getHeight() - radius, radius, canvas.getHeight(), paint);
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+ }
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+
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+ if (exceptRightBotoom) {//右下角不为圆角
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+ canvas.drawRect(canvas.getWidth() - radius, canvas.getHeight() - radius, canvas.getWidth(), canvas.getHeight(), paint);
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+ }
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+
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+ return outBitmap;
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+
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+ }
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+
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+ @Override
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+ public void updateDiskCacheKey(MessageDigest messageDigest) {
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+
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+ }
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+}
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