1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14package android.support.v17.leanback.widget; 15 16import android.graphics.Color; 17import android.graphics.drawable.ColorDrawable; 18import android.os.Build; 19import android.view.View; 20 21/** 22 * Helper for setting rounded rectangle backgrounds on a view. 23 */ 24final class RoundedRectHelper { 25 26 private final static RoundedRectHelper sInstance = new RoundedRectHelper(); 27 private Impl mImpl; 28 29 /** 30 * Returns an instance of the helper. 31 */ 32 public static RoundedRectHelper getInstance() { 33 return sInstance; 34 } 35 36 /** 37 * Sets or removes a rounded rectangle outline on the given view. 38 */ 39 public void setClipToRoundedOutline(View view, boolean clip) { 40 mImpl.setClipToRoundedOutline(view, clip); 41 } 42 43 static interface Impl { 44 public void setClipToRoundedOutline(View view, boolean clip); 45 } 46 47 /** 48 * Implementation used prior to L. 49 */ 50 private static final class StubImpl implements Impl { 51 @Override 52 public void setClipToRoundedOutline(View view, boolean clip) { 53 // Not supported 54 } 55 } 56 57 /** 58 * Implementation used on api 21 (and above). 59 */ 60 private static final class Api21Impl implements Impl { 61 @Override 62 public void setClipToRoundedOutline(View view, boolean clip) { 63 RoundedRectHelperApi21.setClipToRoundedOutline(view, clip); 64 } 65 } 66 67 private RoundedRectHelper() { 68 if (Build.VERSION.SDK_INT >= 21) { 69 mImpl = new Api21Impl(); 70 } else { 71 mImpl = new StubImpl(); 72 } 73 } 74} 75