1 /* 2 * Copyright (C) 2021 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 package com.android.keyguard; 17 18 import android.animation.AnimatorSet; 19 import android.animation.ValueAnimator; 20 import android.content.Context; 21 import android.content.res.ColorStateList; 22 import android.content.res.TypedArray; 23 import android.graphics.drawable.GradientDrawable; 24 import android.graphics.drawable.RippleDrawable; 25 import android.view.ContextThemeWrapper; 26 27 import androidx.annotation.StyleRes; 28 29 import com.android.systemui.R; 30 import com.android.systemui.animation.Interpolators; 31 import com.android.systemui.util.Utils; 32 33 /** 34 * Provides background color and radius animations for key pad buttons. 35 */ 36 class NumPadAnimator { 37 private AnimatorSet mAnimator; 38 private ValueAnimator mExpandAnimator; 39 private ValueAnimator mContractAnimator; 40 private GradientDrawable mBackground; 41 private RippleDrawable mRipple; 42 private int mNormalColor; 43 private int mHighlightColor; 44 private int mStyle; 45 NumPadAnimator(Context context, final RippleDrawable drawable, @StyleRes int style)46 NumPadAnimator(Context context, final RippleDrawable drawable, @StyleRes int style) { 47 mStyle = style; 48 mRipple = (RippleDrawable) drawable.mutate(); 49 mBackground = (GradientDrawable) mRipple.findDrawableByLayerId(R.id.background); 50 51 reloadColors(context); 52 53 // Actual values will be updated later, usually during an onLayout() call 54 mAnimator = new AnimatorSet(); 55 mExpandAnimator = ValueAnimator.ofFloat(0f, 1f); 56 mExpandAnimator.setDuration(50); 57 mExpandAnimator.setInterpolator(Interpolators.LINEAR); 58 mExpandAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 59 public void onAnimationUpdate(ValueAnimator anim) { 60 mBackground.setCornerRadius((float) anim.getAnimatedValue()); 61 mRipple.invalidateSelf(); 62 } 63 }); 64 65 mContractAnimator = ValueAnimator.ofFloat(1f, 0f); 66 mContractAnimator.setStartDelay(33); 67 mContractAnimator.setDuration(417); 68 mContractAnimator.setInterpolator(Interpolators.FAST_OUT_SLOW_IN); 69 mContractAnimator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() { 70 public void onAnimationUpdate(ValueAnimator anim) { 71 mBackground.setCornerRadius((float) anim.getAnimatedValue()); 72 mRipple.invalidateSelf(); 73 } 74 }); 75 mAnimator.playSequentially(mExpandAnimator, mContractAnimator); 76 } 77 onLayout(int height)78 void onLayout(int height) { 79 float startRadius = height / 2f; 80 float endRadius = height / 4f; 81 mBackground.setCornerRadius(startRadius); 82 mExpandAnimator.setFloatValues(startRadius, endRadius); 83 mContractAnimator.setFloatValues(endRadius, startRadius); 84 } 85 start()86 void start() { 87 mAnimator.cancel(); 88 mAnimator.start(); 89 } 90 91 /** 92 * Reload colors from resources. 93 **/ reloadColors(Context context)94 void reloadColors(Context context) { 95 int[] customAttrs = {android.R.attr.colorControlNormal, 96 android.R.attr.colorControlHighlight}; 97 98 ContextThemeWrapper ctw = new ContextThemeWrapper(context, mStyle); 99 TypedArray a = ctw.obtainStyledAttributes(customAttrs); 100 mNormalColor = Utils.getPrivateAttrColorIfUnset(ctw, a, 0, 0, 101 com.android.internal.R.attr.colorSurface); 102 mHighlightColor = a.getColor(1, 0); 103 a.recycle(); 104 105 mBackground.setColor(mNormalColor); 106 mRipple.setColor(ColorStateList.valueOf(mHighlightColor)); 107 } 108 } 109 110