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