Add crop circle with border transformation (#136)

transformations/src/main/java/jp/wasabeef/glide/transformations/CropCircleWithBorderTransformation.java

@@ -0,0 +1,94 @@
+package jp.wasabeef.glide.transformations;
+
+/**
+ * Copyright (C) 2017 Wasabeef
+ *
+ * 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:https://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.
+ */
+
+public class CropCircleWithBorderTransformation implements Transformation<Bitmap> {
+
+ private BitmapPool mBitmapPool;
+ private int borderWidth;
+ private int borderColor;
+
+ public CropCircleWithBorderTransformation(Context context, int borderWidth,
+ @ColorInt int borderColor) {
+ this(Glide.get(context).getBitmapPool());
+ this.borderWidth = borderWidth;
+ this.borderColor = borderColor;
+ }
+
+ public CropCircleWithBorderTransformation(BitmapPool pool) {
+ this.mBitmapPool = pool;
+ }
+
+ @Override
+ public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
+ Bitmap source = resource.get();
+ int size = Math.min(source.getWidth(), source.getHeight());
+
+ int width = (source.getWidth() - size) / 2;
+ int height = (source.getHeight() - size) / 2;
+
+ Bitmap bitmap = mBitmapPool.get(size, size, Bitmap.Config.ARGB_8888);
+ if (bitmap == null) {
+ bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
+ }
+
+ Canvas canvas = new Canvas(bitmap);
+ Paint paint = new Paint();
+ BitmapShader shader =
+ new BitmapShader(source, BitmapShader.TileMode.CLAMP, BitmapShader.TileMode.CLAMP);
+ if (width != 0 || height != 0) {
+ // source isn't square, move viewport to center
+ Matrix matrix = new Matrix();
+ matrix.setTranslate(-width, -height);
+ shader.setLocalMatrix(matrix);
+ }
+ paint.setShader(shader);
+ paint.setAntiAlias(true);
+
+ float r = size / 2f;
+ canvas.drawCircle(r, r, r, paint);
+
+ // add border
+ int dstBitmapWidth = bitmap.getWidth() + borderWidth * 2;
+ Bitmap borderedBitmap =
+ Bitmap.createBitmap(dstBitmapWidth, dstBitmapWidth, Bitmap.Config.ARGB_8888);
+ Canvas canvas1 = new Canvas(borderedBitmap);
+ canvas1.drawBitmap(bitmap, borderWidth, borderWidth, null);
+
+ Paint paint1 = new Paint();
+ paint1.setColor(borderColor);
+ paint1.setStyle(Paint.Style.STROKE);
+ paint1.setStrokeWidth(borderWidth);
+ paint1.setAntiAlias(true);
+
+ canvas1.drawCircle(
+ canvas1.getWidth() / 2,
+ canvas1.getWidth() / 2,
+ canvas1.getWidth() / 2 - borderWidth / 2,
+ paint1
+ );
+
+ bitmap.recycle();
+
+ return BitmapResource.obtain(borderedBitmap, mBitmapPool);
+ }
+
+ @Override public String getId() {
+ return "CropCircleWithBorderTransformation(" +
+ "width=" + borderWidth + ", color=" + borderColor + ")";
+ }
+}