| /* |
| * Copyright (C) 2019 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.keyguard.clock; |
| |
| import static com.android.systemui.doze.util.BurnInHelperKt.getBurnInOffset; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.util.AttributeSet; |
| import android.util.MathUtils; |
| import android.view.View; |
| import android.widget.FrameLayout; |
| |
| import com.android.keyguard.R; |
| |
| /** |
| * Positions clock faces (analog, digital, typographic) and handles pixel shifting |
| * to prevent screen burn-in. |
| */ |
| public class ClockLayout extends FrameLayout { |
| |
| private static final int ANALOG_CLOCK_SHIFT_FACTOR = 3; |
| /** |
| * Clock face views. |
| */ |
| private View mAnalogClock; |
| |
| /** |
| * Pixel shifting amplitudes used to prevent screen burn-in. |
| */ |
| private int mBurnInPreventionOffsetX; |
| private int mBurnInPreventionOffsetY; |
| |
| private float mDarkAmount; |
| |
| public ClockLayout(Context context) { |
| this(context, null); |
| } |
| |
| public ClockLayout(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public ClockLayout(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| mAnalogClock = findViewById(R.id.analog_clock); |
| |
| // Get pixel shifting X, Y amplitudes from resources. |
| Resources resources = getResources(); |
| mBurnInPreventionOffsetX = resources.getDimensionPixelSize( |
| R.dimen.burn_in_prevention_offset_x); |
| mBurnInPreventionOffsetY = resources.getDimensionPixelSize( |
| R.dimen.burn_in_prevention_offset_y); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int left, int top, int right, int bottom) { |
| super.onLayout(changed, left, top, right, bottom); |
| positionChildren(); |
| } |
| |
| void onTimeChanged() { |
| positionChildren(); |
| } |
| |
| /** |
| * See {@link com.android.systemui.plugins.ClockPlugin#setDarkAmount(float)}. |
| */ |
| void setDarkAmount(float darkAmount) { |
| mDarkAmount = darkAmount; |
| positionChildren(); |
| } |
| |
| private void positionChildren() { |
| final float offsetX = MathUtils.lerp(0f, |
| getBurnInOffset(mBurnInPreventionOffsetX * 2, true) - mBurnInPreventionOffsetX, |
| mDarkAmount); |
| final float offsetY = MathUtils.lerp(0f, |
| getBurnInOffset(mBurnInPreventionOffsetY * 2, false) |
| - 0.5f * mBurnInPreventionOffsetY, |
| mDarkAmount); |
| |
| // Put the analog clock in the middle of the screen. |
| if (mAnalogClock != null) { |
| mAnalogClock.setX(Math.max(0f, 0.5f * (getWidth() - mAnalogClock.getWidth())) |
| + ANALOG_CLOCK_SHIFT_FACTOR * offsetX); |
| mAnalogClock.setY(Math.max(0f, 0.5f * (getHeight() - mAnalogClock.getHeight())) |
| + ANALOG_CLOCK_SHIFT_FACTOR * offsetY); |
| } |
| } |
| } |