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 com.android.launcher3.util; 18 19 public class CircleRevealOutlineProvider extends RevealOutlineAnimation { 20 21 private int mCenterX; 22 private int mCenterY; 23 private float mRadius0; 24 private float mRadius1; 25 26 /** 27 * @param x reveal center x 28 * @param y reveal center y 29 * @param r0 initial radius 30 * @param r1 final radius 31 */ 32 public CircleRevealOutlineProvider(int x, int y, float r0, float r1) { 33 mCenterX = x; 34 mCenterY = y; 35 mRadius0 = r0; 36 mRadius1 = r1; 37 } 38 39 @Override 40 public boolean shouldRemoveElevationDuringAnimation() { 41 return true; 42 } 43 44 @Override 45 public void setProgress(float progress) { 46 mOutlineRadius = (1 - progress) * mRadius0 + progress * mRadius1; 47 48 mOutline.left = (int) (mCenterX - mOutlineRadius); 49 mOutline.top = (int) (mCenterY - mOutlineRadius); 50 mOutline.right = (int) (mCenterX + mOutlineRadius); 51 mOutline.bottom = (int) (mCenterY + mOutlineRadius); 52 } 53 } 54
