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      1 /*
      2  * Copyright (C) 2015 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 package android.support.car.ui;
     17 
     18 import android.content.Context;
     19 import android.graphics.Canvas;
     20 import android.graphics.Path;
     21 import android.util.AttributeSet;
     22 import android.view.View;
     23 import android.widget.FrameLayout;
     24 
     25 /**
     26  * FrameLayout that enables the user to set a Path that the view will be clipped to
     27  *
     28  * From GoogleSearch/com.google.android.shared.ui/CircularClipAnimation
     29  * @hide
     30  */
     31 public class ClippableFrameLayout extends FrameLayout implements PathClippingView {
     32     private Path mClipPath;
     33 
     34     public ClippableFrameLayout(Context context, AttributeSet attrs) {
     35         super(context, attrs);
     36     }
     37 
     38     @Override
     39     public void setClipPath(Path clipPath) {
     40         mClipPath = clipPath;
     41         setClipToPadding(true);
     42         setClipChildren(true);
     43         setLayerType(View.LAYER_TYPE_SOFTWARE, null);
     44         setWillNotDraw(false);
     45         invalidate();
     46     }
     47 
     48     @Override
     49     protected void onDraw(Canvas canvas) {
     50         if (mClipPath != null) {
     51             canvas.clipPath(mClipPath);
     52         }
     53         super.onDraw(canvas);
     54     }
     55 }
     56