add Vignette

README.md

@@ -65,7 +65,7 @@ Glide.with(this).load(R.drawable.demo).bitmapTransform(
 ### Filter (use GPUImage)
 `ToonFilterTransformation`, `SepiaFilterTransformation`, `ContrastFilterTransformation`  
 `InvertFilterTransformation`, `PixelationFilterTransformation`, `SketchFilterTransformation`  
-`SwirlFilterTransformation`, `KuwaharaFilterTransformation`
+`SwirlFilterTransformation`, `KuwaharaFilterTransformation`, `VignetteFilterTransformation`
 
 ### Other
 `RoundedCornersTransformation`

example/src/main/java/jp/wasabeef/example/glide/MainActivity.java

@@ -38,6 +38,7 @@ public class MainActivity extends ActionBarActivity {
         dataSet.add(Type.Swirl);
         dataSet.add(Type.Brightness);
         dataSet.add(Type.Kuawahara);
+        dataSet.add(Type.Vignette);
 
         recyclerView.setAdapter(new MainAdapter(this, dataSet));
     }

example/src/main/java/jp/wasabeef/example/glide/MainAdapter.java

@@ -33,6 +33,7 @@ import jp.wasabeef.glide.transformations.gpu.SepiaFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.SketchFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.SwirlFilterTransformation;
 import jp.wasabeef.glide.transformations.gpu.ToonFilterTransformation;
+import jp.wasabeef.glide.transformations.gpu.VignetteFilterTransformation;
 
 /**
  * Created by Wasabeef on 2015/01/11.
@@ -59,7 +60,8 @@ public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {
         Sketch,
         Swirl,
         Brightness,
-        Kuawahara
+        Kuawahara,
+        Vignette
     }
 
     public MainAdapter(Context context, List<Type> dataSet) {
@@ -128,6 +130,10 @@ public class MainAdapter extends RecyclerView.Adapter<MainAdapter.ViewHolder> {
             case Kuawahara:
                 transformation = new KuwaharaFilterTransformation(mContext, mPool, 25);
                 break;
+            case Vignette:
+                transformation = new VignetteFilterTransformation(mContext, mPool,
+                        new PointF(0.5f, 0.5f), new float[]{0.0f, 0.0f, 0.0f}, 0f, 0.75f);
+                break;
         }
 
         Glide.with(mContext).load(R.drawable.demo)

transformations/src/main/java/jp/wasabeef/glide/transformations/gpu/VignetteFilterTransformation.java

@@ -0,0 +1,90 @@
+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 android.graphics.PointF;
+
+import java.util.Arrays;
+
+import jp.co.cyberagent.android.gpuimage.GPUImage;
+import jp.co.cyberagent.android.gpuimage.GPUImageVignetteFilter;
+
+/**
+ * Performs a vignetting effect, fading out the image at the edges
+ * x:
+ * y: The directional intensity of the vignetting, with a default of x = 0.75, y = 0.5
+ */
+public class VignetteFilterTransformation implements Transformation<Bitmap> {
+
+    private Context mContext;
+    private BitmapPool mBitmapPool;
+
+    private GPUImageVignetteFilter mFilter = new GPUImageVignetteFilter();
+    private PointF mCenter;
+    private float[] mVignetteColor;
+    private float mVignetteStart;
+    private float mVignetteEnd;
+
+
+    public VignetteFilterTransformation(Context context, BitmapPool pool) {
+        mContext = context;
+        mBitmapPool = pool;
+        mCenter = new PointF();
+    }
+
+    public VignetteFilterTransformation(Context context, BitmapPool pool,
+            PointF center, float[] color, float start, float end) {
+        mContext = context;
+        mBitmapPool = pool;
+        mCenter = center;
+        mVignetteColor = color;
+        mVignetteStart = start;
+        mVignetteEnd = end;
+        mFilter.setVignetteCenter(mCenter);
+        mFilter.setVignetteColor(mVignetteColor);
+        mFilter.setVignetteStart(mVignetteStart);
+        mFilter.setVignetteEnd(mVignetteEnd);
+    }
+
+    @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(mFilter);
+        Bitmap bitmap = gpuImage.getBitmapWithFilterApplied();
+
+        source.recycle();
+
+        return BitmapResource.obtain(bitmap, mBitmapPool);
+    }
+
+    @Override
+    public String getId() {
+        return "VignetteFilterTransformation(center=" + mCenter.toString() +
+                ",color=" + Arrays.toString(mVignetteColor) +
+                ",start=" + mVignetteStart + ",end=" + mVignetteEnd + ")";
+    }
+}