| package com.android.systemui.statusbar |
| |
| import android.animation.Animator |
| import android.animation.AnimatorListenerAdapter |
| import android.animation.ObjectAnimator |
| import android.animation.ValueAnimator |
| import android.content.Context |
| import android.content.res.Configuration |
| import android.os.SystemClock |
| import android.util.DisplayMetrics |
| import android.util.MathUtils |
| import android.view.MotionEvent |
| import android.view.View |
| import android.view.ViewConfiguration |
| import androidx.annotation.VisibleForTesting |
| import com.android.internal.logging.nano.MetricsProto.MetricsEvent |
| import com.android.systemui.ExpandHelper |
| import com.android.systemui.Gefingerpoken |
| import com.android.systemui.R |
| import com.android.systemui.animation.Interpolators |
| import com.android.systemui.biometrics.UdfpsKeyguardViewController |
| import com.android.systemui.classifier.Classifier |
| import com.android.systemui.classifier.FalsingCollector |
| import com.android.systemui.dagger.SysUISingleton |
| import com.android.systemui.media.MediaHierarchyManager |
| import com.android.systemui.plugins.ActivityStarter.OnDismissAction |
| import com.android.systemui.plugins.FalsingManager |
| import com.android.systemui.plugins.qs.QS |
| import com.android.systemui.statusbar.notification.collection.NotificationEntry |
| import com.android.systemui.statusbar.notification.row.ExpandableNotificationRow |
| import com.android.systemui.statusbar.notification.row.ExpandableView |
| import com.android.systemui.statusbar.notification.stack.AmbientState |
| import com.android.systemui.statusbar.notification.stack.NotificationStackScrollLayoutController |
| import com.android.systemui.statusbar.phone.KeyguardBypassController |
| import com.android.systemui.statusbar.phone.LockscreenGestureLogger |
| import com.android.systemui.statusbar.phone.LockscreenGestureLogger.LockscreenUiEvent |
| import com.android.systemui.statusbar.phone.NotificationPanelViewController |
| import com.android.systemui.statusbar.phone.ScrimController |
| import com.android.systemui.statusbar.phone.StatusBar |
| import com.android.systemui.statusbar.policy.ConfigurationController |
| import com.android.systemui.util.Utils |
| import javax.inject.Inject |
| |
| private const val SPRING_BACK_ANIMATION_LENGTH_MS = 375L |
| private const val RUBBERBAND_FACTOR_STATIC = 0.15f |
| private const val RUBBERBAND_FACTOR_EXPANDABLE = 0.5f |
| |
| /** |
| * A class that controls the lockscreen to shade transition |
| */ |
| @SysUISingleton |
| class LockscreenShadeTransitionController @Inject constructor( |
| private val statusBarStateController: SysuiStatusBarStateController, |
| private val lockscreenGestureLogger: LockscreenGestureLogger, |
| private val keyguardBypassController: KeyguardBypassController, |
| private val lockScreenUserManager: NotificationLockscreenUserManager, |
| private val falsingCollector: FalsingCollector, |
| private val ambientState: AmbientState, |
| private val displayMetrics: DisplayMetrics, |
| private val mediaHierarchyManager: MediaHierarchyManager, |
| private val scrimController: ScrimController, |
| private val depthController: NotificationShadeDepthController, |
| private val featureFlags: FeatureFlags, |
| private val context: Context, |
| configurationController: ConfigurationController, |
| falsingManager: FalsingManager |
| ) { |
| private var pulseHeight: Float = 0f |
| private var useSplitShade: Boolean = false |
| private lateinit var nsslController: NotificationStackScrollLayoutController |
| lateinit var notificationPanelController: NotificationPanelViewController |
| lateinit var statusbar: StatusBar |
| lateinit var qS: QS |
| |
| /** |
| * A handler that handles the next keyguard dismiss animation. |
| */ |
| private var animationHandlerOnKeyguardDismiss: ((Long) -> Unit)? = null |
| |
| /** |
| * The entry that was just dragged down on. |
| */ |
| private var draggedDownEntry: NotificationEntry? = null |
| |
| /** |
| * The current animator if any |
| */ |
| @VisibleForTesting |
| internal var dragDownAnimator: ValueAnimator? = null |
| |
| /** |
| * The current pulse height animator if any |
| */ |
| @VisibleForTesting |
| internal var pulseHeightAnimator: ValueAnimator? = null |
| |
| /** |
| * Distance that the full shade transition takes in order for scrim to fully transition to |
| * the shade (in alpha) |
| */ |
| private var scrimTransitionDistance = 0 |
| |
| /** |
| * Distance that the full transition takes in order for us to fully transition to the shade |
| */ |
| private var fullTransitionDistance = 0 |
| |
| /** |
| * Flag to make sure that the dragDownAmount is applied to the listeners even when in the |
| * locked down shade. |
| */ |
| private var forceApplyAmount = false |
| |
| /** |
| * A flag to suppress the default animation when unlocking in the locked down shade. |
| */ |
| private var nextHideKeyguardNeedsNoAnimation = false |
| |
| /** |
| * The distance until we're showing the notifications when pulsing |
| */ |
| val distanceUntilShowingPulsingNotifications |
| get() = scrimTransitionDistance |
| |
| /** |
| * The udfpsKeyguardViewController if it exists. |
| */ |
| var udfpsKeyguardViewController: UdfpsKeyguardViewController? = null |
| |
| /** |
| * The touch helper responsible for the drag down animation. |
| */ |
| val touchHelper = DragDownHelper(falsingManager, falsingCollector, this, context) |
| |
| init { |
| updateResources() |
| configurationController.addCallback(object : ConfigurationController.ConfigurationListener { |
| override fun onConfigChanged(newConfig: Configuration?) { |
| updateResources() |
| touchHelper.updateResources(context) |
| } |
| }) |
| } |
| |
| private fun updateResources() { |
| scrimTransitionDistance = context.resources.getDimensionPixelSize( |
| R.dimen.lockscreen_shade_scrim_transition_distance) |
| fullTransitionDistance = context.resources.getDimensionPixelSize( |
| R.dimen.lockscreen_shade_qs_transition_distance) |
| useSplitShade = Utils.shouldUseSplitNotificationShade(featureFlags, context.resources) |
| } |
| |
| fun setStackScroller(nsslController: NotificationStackScrollLayoutController) { |
| this.nsslController = nsslController |
| touchHelper.host = nsslController.view |
| touchHelper.expandCallback = nsslController.expandHelperCallback |
| } |
| |
| /** |
| * Initialize the shelf controller such that clicks on it will expand the shade |
| */ |
| fun bindController(notificationShelfController: NotificationShelfController) { |
| // Bind the click listener of the shelf to go to the full shade |
| notificationShelfController.setOnClickListener { |
| if (statusBarStateController.state == StatusBarState.KEYGUARD) { |
| statusbar.wakeUpIfDozing(SystemClock.uptimeMillis(), it, "SHADE_CLICK") |
| goToLockedShade(it) |
| } |
| } |
| } |
| |
| /** |
| * @return true if the interaction is accepted, false if it should be cancelled |
| */ |
| internal fun canDragDown(): Boolean { |
| return (statusBarStateController.state == StatusBarState.KEYGUARD || |
| nsslController.isInLockedDownShade()) && |
| qS.isFullyCollapsed |
| } |
| |
| /** |
| * Called by the touch helper when when a gesture has completed all the way and released. |
| */ |
| internal fun onDraggedDown(startingChild: View?, dragLengthY: Int) { |
| if (canDragDown()) { |
| if (nsslController.isInLockedDownShade()) { |
| statusBarStateController.setLeaveOpenOnKeyguardHide(true) |
| statusbar.dismissKeyguardThenExecute(OnDismissAction { |
| nextHideKeyguardNeedsNoAnimation = true |
| false |
| }, |
| null /* cancelRunnable */, false /* afterKeyguardGone */) |
| } else { |
| lockscreenGestureLogger.write( |
| MetricsEvent.ACTION_LS_SHADE, |
| (dragLengthY / displayMetrics.density).toInt(), |
| 0 /* velocityDp */) |
| lockscreenGestureLogger.log(LockscreenUiEvent.LOCKSCREEN_PULL_SHADE_OPEN) |
| if (!ambientState.isDozing() || startingChild != null) { |
| // go to locked shade while animating the drag down amount from its current |
| // value |
| val animationHandler = { delay: Long -> |
| if (startingChild is ExpandableNotificationRow) { |
| startingChild.onExpandedByGesture( |
| true /* drag down is always an open */) |
| } |
| notificationPanelController.animateToFullShade(delay) |
| notificationPanelController.setTransitionToFullShadeAmount(0f, |
| true /* animated */, delay) |
| |
| // Let's reset ourselves, ready for the next animation |
| |
| // changing to shade locked will make isInLockDownShade true, so let's |
| // override that |
| forceApplyAmount = true |
| // Reset the behavior. At this point the animation is already started |
| dragDownAmount = 0f |
| forceApplyAmount = false |
| } |
| val cancelRunnable = Runnable { setDragDownAmountAnimated(0f) } |
| goToLockedShadeInternal(startingChild, animationHandler, cancelRunnable) |
| } |
| } |
| } else { |
| setDragDownAmountAnimated(0f) |
| } |
| } |
| |
| /** |
| * Called by the touch helper when the drag down was aborted and should be reset. |
| */ |
| internal fun onDragDownReset() { |
| nsslController.setDimmed(true /* dimmed */, true /* animated */) |
| nsslController.resetScrollPosition() |
| nsslController.resetCheckSnoozeLeavebehind() |
| setDragDownAmountAnimated(0f) |
| } |
| |
| /** |
| * The user has dragged either above or below the threshold which changes the dimmed state. |
| * @param above whether they dragged above it |
| */ |
| internal fun onCrossedThreshold(above: Boolean) { |
| nsslController.setDimmed(!above /* dimmed */, true /* animate */) |
| } |
| |
| /** |
| * Called by the touch helper when the drag down was started |
| */ |
| internal fun onDragDownStarted() { |
| nsslController.cancelLongPress() |
| nsslController.checkSnoozeLeavebehind() |
| dragDownAnimator?.cancel() |
| } |
| |
| /** |
| * Do we need a falsing check currently? |
| */ |
| internal val isFalsingCheckNeeded: Boolean |
| get() = statusBarStateController.state == StatusBarState.KEYGUARD |
| |
| /** |
| * Is dragging down enabled on a given view |
| * @param view The view to check or `null` to check if it's enabled at all |
| */ |
| internal fun isDragDownEnabledForView(view: ExpandableView?): Boolean { |
| if (isDragDownAnywhereEnabled) { |
| return true |
| } |
| if (nsslController.isInLockedDownShade()) { |
| if (view == null) { |
| // Dragging down is allowed in general |
| return true |
| } |
| if (view is ExpandableNotificationRow) { |
| // Only drag down on sensitive views, otherwise the ExpandHelper will take this |
| return view.entry.isSensitive |
| } |
| } |
| return false |
| } |
| |
| /** |
| * @return if drag down is enabled anywhere, not just on selected views. |
| */ |
| internal val isDragDownAnywhereEnabled: Boolean |
| get() = (statusBarStateController.getState() == StatusBarState.KEYGUARD && |
| !keyguardBypassController.bypassEnabled && |
| qS.isFullyCollapsed) |
| |
| /** |
| * The amount in pixels that the user has dragged down. |
| */ |
| internal var dragDownAmount = 0f |
| set(value) { |
| if (field != value || forceApplyAmount) { |
| field = value |
| if (!nsslController.isInLockedDownShade() || forceApplyAmount) { |
| nsslController.setTransitionToFullShadeAmount(field) |
| notificationPanelController.setTransitionToFullShadeAmount(field, |
| false /* animate */, 0 /* delay */) |
| // TODO: appear qs also in split shade |
| val qsAmount = if (useSplitShade) 0f else field |
| qS.setTransitionToFullShadeAmount(qsAmount, false /* animate */) |
| // TODO: appear media also in split shade |
| val mediaAmount = if (useSplitShade) 0f else field |
| mediaHierarchyManager.setTransitionToFullShadeAmount(mediaAmount) |
| transitionToShadeAmountCommon(field) |
| } |
| } |
| } |
| |
| private fun transitionToShadeAmountCommon(dragDownAmount: Float) { |
| val scrimProgress = MathUtils.saturate(dragDownAmount / scrimTransitionDistance) |
| scrimController.setTransitionToFullShadeProgress(scrimProgress) |
| // Fade out all content only visible on the lockscreen |
| notificationPanelController.setKeyguardOnlyContentAlpha(1.0f - scrimProgress) |
| depthController.transitionToFullShadeProgress = scrimProgress |
| udfpsKeyguardViewController?.setTransitionToFullShadeProgress(scrimProgress) |
| } |
| |
| private fun setDragDownAmountAnimated( |
| target: Float, |
| delay: Long = 0, |
| endlistener: (() -> Unit)? = null |
| ) { |
| val dragDownAnimator = ValueAnimator.ofFloat(dragDownAmount, target) |
| dragDownAnimator.interpolator = Interpolators.FAST_OUT_SLOW_IN |
| dragDownAnimator.duration = SPRING_BACK_ANIMATION_LENGTH_MS |
| dragDownAnimator.addUpdateListener { animation: ValueAnimator -> |
| dragDownAmount = animation.animatedValue as Float |
| } |
| if (delay > 0) { |
| dragDownAnimator.startDelay = delay |
| } |
| if (endlistener != null) { |
| dragDownAnimator.addListener(object : AnimatorListenerAdapter() { |
| override fun onAnimationEnd(animation: Animator?) { |
| endlistener.invoke() |
| } |
| }) |
| } |
| dragDownAnimator.start() |
| this.dragDownAnimator = dragDownAnimator |
| } |
| |
| /** |
| * Animate appear the drag down amount. |
| */ |
| private fun animateAppear(delay: Long = 0) { |
| // changing to shade locked will make isInLockDownShade true, so let's override |
| // that |
| forceApplyAmount = true |
| |
| // we set the value initially to 1 pixel, since that will make sure we're |
| // transitioning to the full shade. this is important to avoid flickering, |
| // as the below animation only starts once the shade is unlocked, which can |
| // be a couple of frames later. if we're setting it to 0, it will use the |
| // default inset and therefore flicker |
| dragDownAmount = 1f |
| setDragDownAmountAnimated(fullTransitionDistance.toFloat(), delay = delay) { |
| // End listener: |
| // Reset |
| dragDownAmount = 0f |
| forceApplyAmount = false |
| } |
| } |
| |
| /** |
| * Ask this controller to go to the locked shade, changing the state change and doing |
| * an animation, where the qs appears from 0 from the top |
| * |
| * If secure with redaction: Show bouncer, go to unlocked shade. |
| * If secure without redaction or no security: Go to [StatusBarState.SHADE_LOCKED]. |
| * |
| * @param expandView The view to expand after going to the shade |
| * @param needsQSAnimation if this needs the quick settings to slide in from the top or if |
| * that's already handled separately |
| */ |
| @JvmOverloads |
| fun goToLockedShade(expandedView: View?, needsQSAnimation: Boolean = true) { |
| if (statusBarStateController.state == StatusBarState.KEYGUARD) { |
| val animationHandler: ((Long) -> Unit)? |
| if (needsQSAnimation) { |
| // Let's use the default animation |
| animationHandler = null |
| } else { |
| // Let's only animate notifications |
| animationHandler = { delay: Long -> |
| notificationPanelController.animateToFullShade(delay) |
| } |
| } |
| goToLockedShadeInternal(expandedView, animationHandler, |
| cancelAction = null) |
| } |
| } |
| |
| /** |
| * If secure with redaction: Show bouncer, go to unlocked shade. |
| * |
| * If secure without redaction or no security: Go to [StatusBarState.SHADE_LOCKED]. |
| * |
| * @param expandView The view to expand after going to the shade. |
| * @param animationHandler The handler which performs the go to full shade animation. If null, |
| * the default handler will do the animation, otherwise the caller is |
| * responsible for the animation. The input value is a Long for the |
| * delay for the animation. |
| * @param cancelAction The runnable to invoke when the transition is aborted. This happens if |
| * the user goes to the bouncer and goes back. |
| */ |
| private fun goToLockedShadeInternal( |
| expandView: View?, |
| animationHandler: ((Long) -> Unit)? = null, |
| cancelAction: Runnable? = null |
| ) { |
| if (statusbar.isShadeDisabled) { |
| cancelAction?.run() |
| return |
| } |
| var userId: Int = lockScreenUserManager.getCurrentUserId() |
| var entry: NotificationEntry? = null |
| if (expandView is ExpandableNotificationRow) { |
| entry = expandView.entry |
| entry.setUserExpanded(true /* userExpanded */, true /* allowChildExpansion */) |
| // Indicate that the group expansion is changing at this time -- this way the group |
| // and children backgrounds / divider animations will look correct. |
| entry.setGroupExpansionChanging(true) |
| userId = entry.sbn.userId |
| } |
| var fullShadeNeedsBouncer = (!lockScreenUserManager.userAllowsPrivateNotificationsInPublic( |
| lockScreenUserManager.getCurrentUserId()) || |
| !lockScreenUserManager.shouldShowLockscreenNotifications() || |
| falsingCollector.shouldEnforceBouncer()) |
| if (keyguardBypassController.bypassEnabled) { |
| fullShadeNeedsBouncer = false |
| } |
| if (lockScreenUserManager.isLockscreenPublicMode(userId) && fullShadeNeedsBouncer) { |
| statusBarStateController.setLeaveOpenOnKeyguardHide(true) |
| var onDismissAction: OnDismissAction? = null |
| if (animationHandler != null) { |
| onDismissAction = OnDismissAction { |
| // We're waiting on keyguard to hide before triggering the action, |
| // as that will make the animation work properly |
| animationHandlerOnKeyguardDismiss = animationHandler |
| false |
| } |
| } |
| val cancelHandler = Runnable { |
| draggedDownEntry?.apply { |
| setUserLocked(false) |
| notifyHeightChanged(false /* needsAnimation */) |
| draggedDownEntry = null |
| } |
| cancelAction?.run() |
| } |
| statusbar.showBouncerWithDimissAndCancelIfKeyguard(onDismissAction, cancelHandler) |
| draggedDownEntry = entry |
| } else { |
| statusBarStateController.setState(StatusBarState.SHADE_LOCKED) |
| // This call needs to be after updating the shade state since otherwise |
| // the scrimstate resets too early |
| if (animationHandler != null) { |
| animationHandler.invoke(0 /* delay */) |
| } else { |
| performDefaultGoToFullShadeAnimation(0) |
| } |
| } |
| } |
| |
| /** |
| * Notify this handler that the keyguard was just dismissed and that a animation to |
| * the full shade should happen. |
| * |
| * @param delay the delay to do the animation with |
| * @param previousState which state were we in when we hid the keyguard? |
| */ |
| fun onHideKeyguard(delay: Long, previousState: Int) { |
| if (animationHandlerOnKeyguardDismiss != null) { |
| animationHandlerOnKeyguardDismiss!!.invoke(delay) |
| animationHandlerOnKeyguardDismiss = null |
| } else { |
| if (nextHideKeyguardNeedsNoAnimation) { |
| nextHideKeyguardNeedsNoAnimation = false |
| } else if (previousState != StatusBarState.SHADE_LOCKED) { |
| // No animation necessary if we already were in the shade locked! |
| performDefaultGoToFullShadeAnimation(delay) |
| } |
| } |
| draggedDownEntry?.apply { |
| setUserLocked(false) |
| draggedDownEntry = null |
| } |
| } |
| |
| /** |
| * Perform the default appear animation when going to the full shade. This is called when |
| * not triggered by gestures, e.g. when clicking on the shelf or expand button. |
| */ |
| private fun performDefaultGoToFullShadeAnimation(delay: Long) { |
| notificationPanelController.animateToFullShade(delay) |
| animateAppear(delay) |
| } |
| |
| // |
| // PULSE EXPANSION |
| // |
| |
| /** |
| * Set the height how tall notifications are pulsing. This is only set whenever we are expanding |
| * from a pulse and determines how much the notifications are expanded. |
| */ |
| fun setPulseHeight(height: Float, animate: Boolean = false) { |
| if (animate) { |
| val pulseHeightAnimator = ValueAnimator.ofFloat(pulseHeight, height) |
| pulseHeightAnimator.interpolator = Interpolators.FAST_OUT_SLOW_IN |
| pulseHeightAnimator.duration = SPRING_BACK_ANIMATION_LENGTH_MS |
| pulseHeightAnimator.addUpdateListener { animation: ValueAnimator -> |
| setPulseHeight(animation.animatedValue as Float) |
| } |
| pulseHeightAnimator.start() |
| this.pulseHeightAnimator = pulseHeightAnimator |
| } else { |
| pulseHeight = height |
| val overflow = nsslController.setPulseHeight(height) |
| notificationPanelController.setOverStrechAmount(overflow) |
| val transitionHeight = if (keyguardBypassController.bypassEnabled) height else 0.0f |
| transitionToShadeAmountCommon(transitionHeight) |
| } |
| } |
| |
| /** |
| * Finish the pulse animation when the touch interaction finishes |
| * @param cancelled was the interaction cancelled and this is a reset? |
| */ |
| fun finishPulseAnimation(cancelled: Boolean) { |
| if (cancelled) { |
| setPulseHeight(0f, animate = true) |
| } else { |
| notificationPanelController.onPulseExpansionFinished() |
| setPulseHeight(0f, animate = false) |
| } |
| } |
| |
| /** |
| * Notify this class that a pulse expansion is starting |
| */ |
| fun onPulseExpansionStarted() { |
| pulseHeightAnimator?.cancel() |
| } |
| } |
| |
| /** |
| * A utility class to enable the downward swipe on the lockscreen to go to the full shade and expand |
| * the notification where the drag started. |
| */ |
| class DragDownHelper( |
| private val falsingManager: FalsingManager, |
| private val falsingCollector: FalsingCollector, |
| private val dragDownCallback: LockscreenShadeTransitionController, |
| context: Context |
| ) : Gefingerpoken { |
| |
| private var dragDownAmountOnStart = 0.0f |
| lateinit var expandCallback: ExpandHelper.Callback |
| lateinit var host: View |
| |
| private var minDragDistance = 0 |
| private var initialTouchX = 0f |
| private var initialTouchY = 0f |
| private var touchSlop = 0f |
| private var slopMultiplier = 0f |
| private val temp2 = IntArray(2) |
| private var draggedFarEnough = false |
| private var startingChild: ExpandableView? = null |
| private var lastHeight = 0f |
| var isDraggingDown = false |
| private set |
| |
| private val isFalseTouch: Boolean |
| get() { |
| return if (!dragDownCallback.isFalsingCheckNeeded) { |
| false |
| } else { |
| falsingManager.isFalseTouch(Classifier.NOTIFICATION_DRAG_DOWN) || !draggedFarEnough |
| } |
| } |
| |
| val isDragDownEnabled: Boolean |
| get() = dragDownCallback.isDragDownEnabledForView(null) |
| |
| init { |
| updateResources(context) |
| } |
| |
| fun updateResources(context: Context) { |
| minDragDistance = context.resources.getDimensionPixelSize( |
| R.dimen.keyguard_drag_down_min_distance) |
| val configuration = ViewConfiguration.get(context) |
| touchSlop = configuration.scaledTouchSlop.toFloat() |
| slopMultiplier = configuration.scaledAmbiguousGestureMultiplier |
| } |
| |
| override fun onInterceptTouchEvent(event: MotionEvent): Boolean { |
| val x = event.x |
| val y = event.y |
| when (event.actionMasked) { |
| MotionEvent.ACTION_DOWN -> { |
| draggedFarEnough = false |
| isDraggingDown = false |
| startingChild = null |
| initialTouchY = y |
| initialTouchX = x |
| } |
| MotionEvent.ACTION_MOVE -> { |
| val h = y - initialTouchY |
| // Adjust the touch slop if another gesture may be being performed. |
| val touchSlop = if (event.classification |
| == MotionEvent.CLASSIFICATION_AMBIGUOUS_GESTURE) |
| touchSlop * slopMultiplier |
| else |
| touchSlop |
| if (h > touchSlop && h > Math.abs(x - initialTouchX)) { |
| falsingCollector.onNotificationStartDraggingDown() |
| isDraggingDown = true |
| captureStartingChild(initialTouchX, initialTouchY) |
| initialTouchY = y |
| initialTouchX = x |
| dragDownCallback.onDragDownStarted() |
| dragDownAmountOnStart = dragDownCallback.dragDownAmount |
| return startingChild != null || dragDownCallback.isDragDownAnywhereEnabled |
| } |
| } |
| } |
| return false |
| } |
| |
| override fun onTouchEvent(event: MotionEvent): Boolean { |
| if (!isDraggingDown) { |
| return false |
| } |
| val x = event.x |
| val y = event.y |
| when (event.actionMasked) { |
| MotionEvent.ACTION_MOVE -> { |
| lastHeight = y - initialTouchY |
| captureStartingChild(initialTouchX, initialTouchY) |
| dragDownCallback.dragDownAmount = lastHeight + dragDownAmountOnStart |
| if (startingChild != null) { |
| handleExpansion(lastHeight, startingChild!!) |
| } |
| if (lastHeight > minDragDistance) { |
| if (!draggedFarEnough) { |
| draggedFarEnough = true |
| dragDownCallback.onCrossedThreshold(true) |
| } |
| } else { |
| if (draggedFarEnough) { |
| draggedFarEnough = false |
| dragDownCallback.onCrossedThreshold(false) |
| } |
| } |
| return true |
| } |
| MotionEvent.ACTION_UP -> if (!falsingManager.isUnlockingDisabled && !isFalseTouch && |
| dragDownCallback.canDragDown()) { |
| dragDownCallback.onDraggedDown(startingChild, (y - initialTouchY).toInt()) |
| if (startingChild != null) { |
| expandCallback.setUserLockedChild(startingChild, false) |
| startingChild = null |
| } |
| isDraggingDown = false |
| } else { |
| stopDragging() |
| return false |
| } |
| MotionEvent.ACTION_CANCEL -> { |
| stopDragging() |
| return false |
| } |
| } |
| return false |
| } |
| |
| private fun captureStartingChild(x: Float, y: Float) { |
| if (startingChild == null) { |
| startingChild = findView(x, y) |
| if (startingChild != null) { |
| if (dragDownCallback.isDragDownEnabledForView(startingChild)) { |
| expandCallback.setUserLockedChild(startingChild, true) |
| } else { |
| startingChild = null |
| } |
| } |
| } |
| } |
| |
| private fun handleExpansion(heightDelta: Float, child: ExpandableView) { |
| var hDelta = heightDelta |
| if (hDelta < 0) { |
| hDelta = 0f |
| } |
| val expandable = child.isContentExpandable |
| val rubberbandFactor = if (expandable) { |
| RUBBERBAND_FACTOR_EXPANDABLE |
| } else { |
| RUBBERBAND_FACTOR_STATIC |
| } |
| var rubberband = hDelta * rubberbandFactor |
| if (expandable && rubberband + child.collapsedHeight > child.maxContentHeight) { |
| var overshoot = rubberband + child.collapsedHeight - child.maxContentHeight |
| overshoot *= 1 - RUBBERBAND_FACTOR_STATIC |
| rubberband -= overshoot |
| } |
| child.actualHeight = (child.collapsedHeight + rubberband).toInt() |
| } |
| |
| private fun cancelChildExpansion(child: ExpandableView) { |
| if (child.actualHeight == child.collapsedHeight) { |
| expandCallback.setUserLockedChild(child, false) |
| return |
| } |
| val anim = ObjectAnimator.ofInt(child, "actualHeight", |
| child.actualHeight, child.collapsedHeight) |
| anim.interpolator = Interpolators.FAST_OUT_SLOW_IN |
| anim.duration = SPRING_BACK_ANIMATION_LENGTH_MS |
| anim.addListener(object : AnimatorListenerAdapter() { |
| override fun onAnimationEnd(animation: Animator) { |
| expandCallback.setUserLockedChild(child, false) |
| } |
| }) |
| anim.start() |
| } |
| |
| private fun stopDragging() { |
| falsingCollector.onNotificationStopDraggingDown() |
| if (startingChild != null) { |
| cancelChildExpansion(startingChild!!) |
| startingChild = null |
| } |
| isDraggingDown = false |
| dragDownCallback.onDragDownReset() |
| } |
| |
| private fun findView(x: Float, y: Float): ExpandableView? { |
| host.getLocationOnScreen(temp2) |
| return expandCallback.getChildAtRawPosition(x + temp2[0], y + temp2[1]) |
| } |
| } |
