1 /* 2 * Copyright (C) 2019 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.keyguard.clock; 18 19 import android.content.res.Resources; 20 import android.util.MathUtils; 21 22 import com.android.internal.annotations.VisibleForTesting; 23 import com.android.systemui.R; 24 25 /** 26 * Computes preferred position of clock by considering height of status bar and lock icon. 27 */ 28 class SmallClockPosition { 29 30 /** 31 * Dimensions used to determine preferred clock position. 32 */ 33 private final int mStatusBarHeight; 34 private final int mKeyguardLockPadding; 35 private final int mKeyguardLockHeight; 36 private final int mBurnInOffsetY; 37 38 /** 39 * Amount of transition between AOD and lock screen. 40 */ 41 private float mDarkAmount; 42 SmallClockPosition(Resources res)43 SmallClockPosition(Resources res) { 44 this(res.getDimensionPixelSize(R.dimen.status_bar_height), 45 res.getDimensionPixelSize(R.dimen.keyguard_lock_padding), 46 res.getDimensionPixelSize(R.dimen.keyguard_lock_height), 47 res.getDimensionPixelSize(R.dimen.burn_in_prevention_offset_y) 48 ); 49 } 50 51 @VisibleForTesting SmallClockPosition(int statusBarHeight, int lockPadding, int lockHeight, int burnInY)52 SmallClockPosition(int statusBarHeight, int lockPadding, int lockHeight, int burnInY) { 53 mStatusBarHeight = statusBarHeight; 54 mKeyguardLockPadding = lockPadding; 55 mKeyguardLockHeight = lockHeight; 56 mBurnInOffsetY = burnInY; 57 } 58 59 /** 60 * See {@link ClockPlugin#setDarkAmount}. 61 */ setDarkAmount(float darkAmount)62 void setDarkAmount(float darkAmount) { 63 mDarkAmount = darkAmount; 64 } 65 66 /** 67 * Gets the preferred Y position accounting for status bar and lock icon heights. 68 */ getPreferredY()69 int getPreferredY() { 70 // On AOD, clock needs to appear below the status bar with enough room for pixel shifting 71 int aodY = mStatusBarHeight + mKeyguardLockHeight + 2 * mKeyguardLockPadding 72 + mBurnInOffsetY; 73 // On lock screen, clock needs to appear below the lock icon 74 int lockY = mStatusBarHeight + mKeyguardLockHeight + 2 * mKeyguardLockPadding; 75 return (int) MathUtils.lerp(lockY, aodY, mDarkAmount); 76 } 77 } 78