1/* 2 * Copyright (C) 2016 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 17package android.support.transition; 18 19import android.graphics.drawable.Drawable; 20import android.support.annotation.NonNull; 21import android.support.annotation.RequiresApi; 22 23@RequiresApi(14) 24interface ViewOverlayImpl { 25 26 /** 27 * Adds a Drawable to the overlay. The bounds of the drawable should be relative to 28 * the host view. Any drawable added to the overlay should be removed when it is no longer 29 * needed or no longer visible. 30 * 31 * @param drawable The Drawable to be added to the overlay. This drawable will be 32 * drawn when the view redraws its overlay. 33 * @see #remove(Drawable) 34 */ 35 void add(@NonNull Drawable drawable); 36 37 /** 38 * Removes all content from the overlay. 39 */ 40 void clear(); 41 42 /** 43 * Removes the specified Drawable from the overlay. 44 * 45 * @param drawable The Drawable to be removed from the overlay. 46 * @see #add(Drawable) 47 */ 48 void remove(@NonNull Drawable drawable); 49 50} 51