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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.animation;
     18 
     19 import android.view.RenderNodeAnimator;
     20 import android.view.View;
     21 
     22 /**
     23  * Reveals a View with an animated clipping circle.
     24  * The clipping is implemented efficiently by talking to a private reveal API on View.
     25  * This hidden class currently only accessed by the {@link android.view.View}.
     26  *
     27  * @hide
     28  */
     29 public class RevealAnimator extends RenderNodeAnimator {
     30 
     31     private View mClipView;
     32 
     33     public RevealAnimator(View clipView, int x, int y,
     34             float startRadius, float endRadius) {
     35         super(x, y, startRadius, endRadius);
     36         mClipView = clipView;
     37         setTarget(mClipView);
     38     }
     39 
     40     @Override
     41     protected void onFinished() {
     42         mClipView.setRevealClip(false, 0, 0, 0);
     43         super.onFinished();
     44     }
     45 
     46 }
     47