ViewAnimationUtils.java revision e83cbd451868a734bfac07ccd680d5617080b579
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 17package android.view; 18 19import android.animation.Animator; 20import android.animation.RevealAnimator; 21 22/** 23 * Defines common utilities for working with View's animations. 24 * 25 */ 26public final class ViewAnimationUtils { 27 private ViewAnimationUtils() {} 28 /** 29 * Returns an Animator which can animate a clipping circle. 30 * <p> 31 * Any shadow cast by the View will respect the circular clip from this animator. 32 * <p> 33 * Only a single non-rectangular clip can be applied on a View at any time. 34 * Views clipped by a circular reveal animation take priority over 35 * {@link View#setClipToOutline(boolean) View Outline clipping}. 36 * <p> 37 * Note that the animation returned here is a one-shot animation. It cannot 38 * be re-used, and once started it cannot be paused or resumed. 39 * 40 * @param view The View will be clipped to the animating circle. 41 * @param centerX The x coordinate of the center of the animating circle. 42 * @param centerY The y coordinate of the center of the animating circle. 43 * @param startRadius The starting radius of the animating circle. 44 * @param endRadius The ending radius of the animating circle. 45 */ 46 public static Animator createCircularReveal(View view, 47 int centerX, int centerY, float startRadius, float endRadius) { 48 return new RevealAnimator(view, centerX, centerY, startRadius, endRadius); 49 } 50} 51