1 /* 2 * Copyright (C) 2017 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.anim; 18 19 import android.graphics.Rect; 20 21 /** 22 * A {@link RevealOutlineAnimation} that provides an outline that interpolates between two radii 23 * and two {@link Rect}s. 24 * 25 * An example usage of this provider is an outline that starts out as a circle and ends 26 * as a rounded rectangle. 27 */ 28 public class RoundedRectRevealOutlineProvider extends RevealOutlineAnimation { 29 private final float mStartRadius; 30 private final float mEndRadius; 31 32 private final Rect mStartRect; 33 private final Rect mEndRect; 34 35 public RoundedRectRevealOutlineProvider(float startRadius, float endRadius, Rect startRect, 36 Rect endRect) { 37 mStartRadius = startRadius; 38 mEndRadius = endRadius; 39 mStartRect = startRect; 40 mEndRect = endRect; 41 } 42 43 @Override 44 public boolean shouldRemoveElevationDuringAnimation() { 45 return false; 46 } 47 48 @Override 49 public void setProgress(float progress) { 50 mOutlineRadius = (1 - progress) * mStartRadius + progress * mEndRadius; 51 52 mOutline.left = (int) ((1 - progress) * mStartRect.left + progress * mEndRect.left); 53 mOutline.top = (int) ((1 - progress) * mStartRect.top + progress * mEndRect.top); 54 mOutline.right = (int) ((1 - progress) * mStartRect.right + progress * mEndRect.right); 55 mOutline.bottom = (int) ((1 - progress) * mStartRect.bottom + progress * mEndRect.bottom); 56 } 57 } 58
