/* * Copyright (C) 2023 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.systemui.keyguard.ui.viewmodel import android.util.Log import android.util.MathUtils import com.android.app.animation.Interpolators import com.android.systemui.common.ui.domain.interactor.ConfigurationInteractor import com.android.systemui.dagger.SysUISingleton import com.android.systemui.dagger.qualifiers.Application import com.android.systemui.keyguard.domain.interactor.BurnInInteractor import com.android.systemui.keyguard.domain.interactor.KeyguardInteractor import com.android.systemui.keyguard.domain.interactor.KeyguardTransitionInteractor import com.android.systemui.keyguard.shared.model.BurnInModel import com.android.systemui.keyguard.shared.model.BurnInModel.Companion.MAX_LARGE_CLOCK_SCALE import com.android.systemui.keyguard.shared.model.Edge import com.android.systemui.keyguard.shared.model.KeyguardState import com.android.systemui.keyguard.ui.StateToValue import com.android.systemui.res.R import com.android.systemui.shade.ShadeDisplayAware import javax.inject.Inject import kotlin.math.max import kotlinx.coroutines.CoroutineScope import kotlinx.coroutines.ExperimentalCoroutinesApi import kotlinx.coroutines.flow.Flow import kotlinx.coroutines.flow.MutableStateFlow import kotlinx.coroutines.flow.SharingStarted import kotlinx.coroutines.flow.StateFlow import kotlinx.coroutines.flow.combine import kotlinx.coroutines.flow.filter import kotlinx.coroutines.flow.flatMapLatest import kotlinx.coroutines.flow.map import kotlinx.coroutines.flow.merge import kotlinx.coroutines.flow.onStart import kotlinx.coroutines.flow.stateIn /** * Models UI state for elements that need to apply anti-burn-in tactics when showing in AOD * (always-on display). */ @OptIn(ExperimentalCoroutinesApi::class) @SysUISingleton class AodBurnInViewModel @Inject constructor( @Application private val applicationScope: CoroutineScope, private val burnInInteractor: BurnInInteractor, @ShadeDisplayAware private val configurationInteractor: ConfigurationInteractor, private val keyguardInteractor: KeyguardInteractor, private val keyguardTransitionInteractor: KeyguardTransitionInteractor, private val goneToAodTransitionViewModel: GoneToAodTransitionViewModel, private val lockscreenToAodTransitionViewModel: LockscreenToAodTransitionViewModel, private val aodToLockscreenTransitionViewModel: AodToLockscreenTransitionViewModel, private val occludedToLockscreenTransitionViewModel: OccludedToLockscreenTransitionViewModel, private val keyguardClockViewModel: KeyguardClockViewModel, ) { private val TAG = "AodBurnInViewModel" private val burnInParams = MutableStateFlow(BurnInParameters()) fun updateBurnInParams(params: BurnInParameters) { burnInParams.value = if (params.minViewY < params.topInset) { // minViewY should never be below the inset. Correct it if needed Log.w(TAG, "minViewY is below topInset: $params") params.copy(minViewY = params.topInset) } else { params } } /** All burn-in movement: x,y,scale, to shift items and prevent burn-in */ val movement: StateFlow = burnInParams .flatMapLatest { params -> configurationInteractor .dimensionPixelSize( setOf( R.dimen.keyguard_enter_from_top_translation_y, R.dimen.keyguard_enter_from_side_translation_x, ) ) .flatMapLatest { dimens -> combine( keyguardInteractor.keyguardTranslationY.onStart { emit(0f) }, burnIn(params).onStart { emit(BurnInModel()) }, goneToAodTransitionViewModel .enterFromTopTranslationY( dimens[R.dimen.keyguard_enter_from_top_translation_y]!! ) .onStart { emit(StateToValue()) }, goneToAodTransitionViewModel .enterFromSideTranslationX( dimens[R.dimen.keyguard_enter_from_side_translation_x]!! ) .onStart { emit(StateToValue()) }, lockscreenToAodTransitionViewModel .enterFromSideTranslationX( dimens[R.dimen.keyguard_enter_from_side_translation_x]!! ) .onStart { emit(StateToValue()) }, occludedToLockscreenTransitionViewModel.lockscreenTranslationY.onStart { emit(0f) }, aodToLockscreenTransitionViewModel .translationX(params.translationX) .onStart { emit(StateToValue()) }, aodToLockscreenTransitionViewModel .translationY(params.translationY) .onStart { emit(StateToValue()) }, ) { flows -> val keyguardTranslationY = flows[0] as Float val burnInModel = flows[1] as BurnInModel val goneToAodTranslationY = flows[2] as StateToValue val goneToAodTranslationX = flows[3] as StateToValue val lockscreenToAodTranslationX = flows[4] as StateToValue val occludedToLockscreen = flows[5] as Float val aodToLockscreenTranslationX = flows[6] as StateToValue val aodToLockscreenTranslationY = flows[7] as StateToValue val translationY = if (aodToLockscreenTranslationY.transitionState.isTransitioning()) { aodToLockscreenTranslationY.value ?: 0f } else if ( goneToAodTranslationY.transitionState.isTransitioning() ) { (goneToAodTranslationY.value ?: 0f) + burnInModel.translationY } else { burnInModel.translationY + occludedToLockscreen + keyguardTranslationY } val translationX = if (aodToLockscreenTranslationX.transitionState.isTransitioning()) { aodToLockscreenTranslationX.value ?: 0f } else { burnInModel.translationX + (goneToAodTranslationX.value ?: 0f) + (lockscreenToAodTranslationX.value ?: 0f) } burnInModel.copy( translationX = translationX.toInt(), translationY = translationY.toInt(), ) } } } .stateIn( scope = applicationScope, started = SharingStarted.WhileSubscribed(), initialValue = BurnInModel(), ) private fun burnIn(params: BurnInParameters): Flow { return combine( merge( keyguardTransitionInteractor.transition(Edge.create(to = KeyguardState.AOD)), keyguardTransitionInteractor .transition(Edge.create(from = KeyguardState.AOD)) .map { it.copy(value = 1f - it.value) }, keyguardTransitionInteractor .transition(Edge.create(to = KeyguardState.LOCKSCREEN)) .filter { it.from != KeyguardState.AOD } .map { it.copy(value = 0f) }, ) .map { Interpolators.FAST_OUT_SLOW_IN.getInterpolation(it.value) }, burnInInteractor.burnIn( xDimenResourceId = R.dimen.burn_in_prevention_offset_x, yDimenResourceId = R.dimen.burn_in_prevention_offset_y, ), ) { interpolated, burnIn -> val useAltAod = keyguardClockViewModel.currentClock.value ?.config ?.useAlternateSmartspaceAODTransition == true // Only scale large non-weather clocks elements in large weather clock will translate // the same as smartspace val useScaleOnly = (!useAltAod) && keyguardClockViewModel.isLargeClockVisible.value val burnInY = MathUtils.lerp(0, burnIn.translationY, interpolated).toInt() val translationY = max(params.topInset - params.minViewY, burnInY) BurnInModel( translationX = MathUtils.lerp(0, burnIn.translationX, interpolated).toInt(), translationY = translationY, scale = MathUtils.lerp(burnIn.scale, MAX_LARGE_CLOCK_SCALE, 1f - interpolated), scaleClockOnly = useScaleOnly, ) } } } /** UI-sourced parameters to pass into the various methods of [AodBurnInViewModel]. */ data class BurnInParameters( /** System insets that keyguard needs to stay out of */ val topInset: Int = 0, /** The min y-value of the visible elements on lockscreen */ val minViewY: Int = Int.MAX_VALUE, /** The current y translation of the view */ val translationY: () -> Float? = { null }, /** The current x translation of the view */ val translationX: () -> Float? = { null }, ) /** * Models UI state of the scaling to apply to elements that need to be scaled for anti-burn-in * purposes. */ data class BurnInScaleViewModel( val scale: Float = 1f, /** Whether the scale only applies to clock UI elements. */ val scaleClockOnly: Boolean = false, )