From b0f95bcbafa65eb7c7b2ccf172ebd5e7f6993bcc Mon Sep 17 00:00:00 2001
From: wasabeef <dadadada.chop@gmail.com>
Date: Mon, 12 Jan 2015 17:50:02 +0900
Subject: [PATCH] add InvertFilter

---
 .../gpu/InvertFilterTransformation.java       | 58 +++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/InvertFilterTransformation.java

diff --git a/transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/InvertFilterTransformation.java b/transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/InvertFilterTransformation.java
new file mode 100644
index 0000000..cefdef9
--- /dev/null
+++ b/transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/InvertFilterTransformation.java
@@ -0,0 +1,58 @@
+package jp.wasabeef.glide.transformations.gpu;
+
+/**
+ * Copyright (C) 2015 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://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.
+ */
+
+import com.bumptech.glide.load.Transformation;
+import com.bumptech.glide.load.engine.Resource;
+import com.bumptech.glide.load.engine.bitmap_recycle.BitmapPool;
+import com.bumptech.glide.load.resource.bitmap.BitmapResource;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+
+import jp.co.cyberagent.android.gpuimage.GPUImage;
+import jp.co.cyberagent.android.gpuimage.GPUImageColorInvertFilter;
+
+public class InvertFilterTransformation implements Transformation<Bitmap> {
+
+    private Context mContext;
+    private BitmapPool mBitmapPool;
+
+    public InvertFilterTransformation(Context context, BitmapPool pool) {
+        mContext = context;
+        mBitmapPool = pool;
+    }
+
+    @Override
+    public Resource<Bitmap> transform(Resource<Bitmap> resource, int outWidth, int outHeight) {
+        Bitmap source = resource.get();
+
+        GPUImage gpuImage = new GPUImage(mContext);
+        gpuImage.setImage(source);
+        gpuImage.setFilter(new GPUImageColorInvertFilter());
+        Bitmap bitmap = gpuImage.getBitmapWithFilterApplied();
+
+        source.recycle();
+
+        return BitmapResource.obtain(bitmap, mBitmapPool);
+    }
+
+    @Override
+    public String getId() {
+        return "InvertFilterTransformation()";
+    }
+}