Merge "Refactor TaskViewTouchController to separately handle dismiss and launch." into main

2025-02-04 03:47:03 -08:00
parent f86a05eee2 c824545d07
commit 8e7130d364
12 changed files with 536 additions and 403 deletions
@@ -149,8 +149,9 @@ import com.android.launcher3.uioverrides.touchcontrollers.NoButtonQuickSwitchTou
 import com.android.launcher3.uioverrides.touchcontrollers.PortraitStatesTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.QuickSwitchTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.StatusBarTouchController;
+import com.android.launcher3.uioverrides.touchcontrollers.TaskViewDismissTouchController;
+import com.android.launcher3.uioverrides.touchcontrollers.TaskViewLaunchTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.TaskViewRecentsTouchContext;
-import com.android.launcher3.uioverrides.touchcontrollers.TaskViewTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.TaskViewTouchControllerDeprecated;
 import com.android.launcher3.uioverrides.touchcontrollers.TransposedQuickSwitchTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.TwoButtonNavbarTouchController;
@@ -687,7 +688,8 @@ public class QuickstepLauncher extends Launcher implements RecentsViewContainer,
        }

        if (enableExpressiveDismissTaskMotion()) {
-            list.add(new TaskViewTouchController<>(this, mTaskViewRecentsTouchContext));
+            list.add(new TaskViewLaunchTouchController<>(this, mTaskViewRecentsTouchContext));
+            list.add(new TaskViewDismissTouchController<>(this, mTaskViewRecentsTouchContext));
        } else {
            list.add(new TaskViewTouchControllerDeprecated<>(this, mTaskViewRecentsTouchContext));
        }
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2025 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.launcher3.uioverrides.touchcontrollers
+
+import android.content.Context
+import android.view.MotionEvent
+import androidx.dynamicanimation.animation.SpringAnimation
+import com.android.app.animation.Interpolators.DECELERATE
+import com.android.launcher3.AbstractFloatingView
+import com.android.launcher3.Utilities.EDGE_NAV_BAR
+import com.android.launcher3.Utilities.boundToRange
+import com.android.launcher3.Utilities.isRtl
+import com.android.launcher3.Utilities.mapToRange
+import com.android.launcher3.touch.SingleAxisSwipeDetector
+import com.android.launcher3.util.TouchController
+import com.android.quickstep.views.RecentsView
+import com.android.quickstep.views.RecentsViewContainer
+import com.android.quickstep.views.TaskView
+import kotlin.math.abs
+import kotlin.math.sign
+
+/** Touch controller for handling task view card dismiss swipes */
+class TaskViewDismissTouchController<CONTAINER>(
+    private val container: CONTAINER,
+    private val taskViewRecentsTouchContext: TaskViewRecentsTouchContext,
+) : TouchController, SingleAxisSwipeDetector.Listener where
+CONTAINER : Context,
+CONTAINER : RecentsViewContainer {
+    private val recentsView: RecentsView<*, *> = container.getOverviewPanel()
+    private val detector: SingleAxisSwipeDetector =
+        SingleAxisSwipeDetector(
+            container as Context,
+            this,
+            recentsView.pagedOrientationHandler.upDownSwipeDirection,
+        )
+    private val isRtl = isRtl(container.resources)
+
+    private var taskBeingDragged: TaskView? = null
+    private var springAnimation: SpringAnimation? = null
+    private var dismissLength: Int = 0
+    private var verticalFactor: Int = 0
+    private var initialDisplacement: Float = 0f
+
+    private fun canInterceptTouch(ev: MotionEvent): Boolean =
+        when {
+            // Don't intercept swipes on the nav bar, as user might be trying to go home during a
+            // task dismiss animation.
+            (ev.edgeFlags and EDGE_NAV_BAR) != 0 -> {
+                false
+            }
+
+            // Floating views that a TouchController should not try to intercept touches from.
+            AbstractFloatingView.getTopOpenViewWithType(
+                container,
+                AbstractFloatingView.TYPE_TOUCH_CONTROLLER_NO_INTERCEPT,
+            ) != null -> false
+
+            // Disable swiping if the task overlay is modal.
+            taskViewRecentsTouchContext.isRecentsModal -> {
+                false
+            }
+
+            else -> taskViewRecentsTouchContext.isRecentsInteractive
+        }
+
+    override fun onControllerInterceptTouchEvent(ev: MotionEvent): Boolean {
+        if ((ev.action == MotionEvent.ACTION_UP || ev.action == MotionEvent.ACTION_CANCEL)) {
+            clearState()
+        }
+        if (ev.action == MotionEvent.ACTION_DOWN) {
+            if (!onActionDown(ev)) {
+                return false
+            }
+        }
+
+        onControllerTouchEvent(ev)
+        return detector.isDraggingState && detector.wasInitialTouchPositive()
+    }
+
+    override fun onControllerTouchEvent(ev: MotionEvent?): Boolean = detector.onTouchEvent(ev)
+
+    private fun onActionDown(ev: MotionEvent): Boolean {
+        springAnimation?.cancel()
+        if (!canInterceptTouch(ev)) {
+            return false
+        }
+
+        taskBeingDragged =
+            recentsView.taskViews
+                .firstOrNull {
+                    recentsView.isTaskViewVisible(it) && container.dragLayer.isEventOverView(it, ev)
+                }
+                ?.also {
+                    dismissLength = recentsView.pagedOrientationHandler.getSecondaryDimension(it)
+                    verticalFactor =
+                        recentsView.pagedOrientationHandler.secondaryTranslationDirectionFactor
+                }
+
+        detector.setDetectableScrollConditions(
+            recentsView.pagedOrientationHandler.getUpDirection(isRtl),
+            /* ignoreSlop = */ false,
+        )
+
+        return true
+    }
+
+    override fun onDragStart(start: Boolean, startDisplacement: Float) {
+        val taskBeingDragged = taskBeingDragged ?: return
+
+        initialDisplacement =
+            taskBeingDragged.secondaryDismissTranslationProperty.get(taskBeingDragged)
+
+        // Add a tiny bit of translation Z, so that it draws on top of other views. This is relevant
+        // (e.g.) when we dismiss a task by sliding it upward: if there is a row of icons above, we
+        // want the dragged task to stay above all other views.
+        taskBeingDragged.translationZ = 0.1f
+    }
+
+    override fun onDrag(displacement: Float): Boolean {
+        val taskBeingDragged = taskBeingDragged ?: return false
+        val currentDisplacement = displacement + initialDisplacement
+        val boundedDisplacement =
+            boundToRange(abs(currentDisplacement), 0f, dismissLength.toFloat())
+        // When swiping below origin, allow slight undershoot to simulate resisting the movement.
+        val totalDisplacement =
+            if (isDisplacementPositiveDirection(currentDisplacement))
+                boundedDisplacement * sign(currentDisplacement)
+            else
+                mapToRange(
+                    boundedDisplacement,
+                    0f,
+                    dismissLength.toFloat(),
+                    0f,
+                    DISMISS_MAX_UNDERSHOOT,
+                    DECELERATE,
+                )
+        taskBeingDragged.secondaryDismissTranslationProperty.setValue(
+            taskBeingDragged,
+            totalDisplacement,
+        )
+        if (taskBeingDragged.isRunningTask && recentsView.enableDrawingLiveTile) {
+            recentsView.runActionOnRemoteHandles { remoteTargetHandle ->
+                remoteTargetHandle.taskViewSimulator.taskSecondaryTranslation.value =
+                    totalDisplacement
+            }
+            recentsView.redrawLiveTile()
+        }
+        return true
+    }
+
+    override fun onDragEnd(velocity: Float) {
+        val taskBeingDragged = taskBeingDragged ?: return
+
+        val currentDisplacement =
+            taskBeingDragged.secondaryDismissTranslationProperty.get(taskBeingDragged)
+        if (currentDisplacement == 0f) {
+            clearState()
+            return
+        }
+        val isBeyondDismissThreshold =
+            abs(currentDisplacement) > abs(DISMISS_THRESHOLD_FRACTION * dismissLength)
+        val isFlingingTowardsDismiss = detector.isFling(velocity) && velocity < 0
+        val isFlingingTowardsRestState = detector.isFling(velocity) && velocity > 0
+        val isDismissing =
+            isFlingingTowardsDismiss || (isBeyondDismissThreshold && !isFlingingTowardsRestState)
+        springAnimation =
+            recentsView
+                .createTaskDismissSettlingSpringAnimation(
+                    taskBeingDragged,
+                    velocity,
+                    isDismissing,
+                    detector,
+                    dismissLength,
+                    this::clearState,
+                )
+                .apply {
+                    animateToFinalPosition(
+                        if (isDismissing) (dismissLength * verticalFactor).toFloat() else 0f
+                    )
+                }
+    }
+
+    // Returns if the current task being dragged is towards "positive" (e.g. dismissal).
+    private fun isDisplacementPositiveDirection(displacement: Float): Boolean =
+        sign(displacement) == sign(verticalFactor.toFloat())
+
+    private fun clearState() {
+        detector.finishedScrolling()
+        detector.setDetectableScrollConditions(0, false)
+        taskBeingDragged?.translationZ = 0f
+        taskBeingDragged = null
+        springAnimation = null
+    }
+
+    companion object {
+        private const val DISMISS_THRESHOLD_FRACTION = 0.5f
+        private const val DISMISS_MAX_UNDERSHOOT = 25f
+    }
+}
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2025 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.launcher3.uioverrides.touchcontrollers
+
+import android.content.Context
+import android.graphics.Rect
+import android.view.MotionEvent
+import com.android.app.animation.Interpolators.ZOOM_IN
+import com.android.launcher3.AbstractFloatingView
+import com.android.launcher3.LauncherAnimUtils
+import com.android.launcher3.Utilities.EDGE_NAV_BAR
+import com.android.launcher3.Utilities.boundToRange
+import com.android.launcher3.Utilities.isRtl
+import com.android.launcher3.anim.AnimatorPlaybackController
+import com.android.launcher3.touch.BaseSwipeDetector
+import com.android.launcher3.touch.SingleAxisSwipeDetector
+import com.android.launcher3.util.DisplayController
+import com.android.launcher3.util.FlingBlockCheck
+import com.android.launcher3.util.TouchController
+import com.android.quickstep.views.RecentsView
+import com.android.quickstep.views.RecentsViewContainer
+import com.android.quickstep.views.TaskView
+import kotlin.math.abs
+
+/** Touch controller which handles dragging task view cards for launch. */
+class TaskViewLaunchTouchController<CONTAINER>(
+    private val container: CONTAINER,
+    private val taskViewRecentsTouchContext: TaskViewRecentsTouchContext,
+) : TouchController, SingleAxisSwipeDetector.Listener where
+CONTAINER : Context,
+CONTAINER : RecentsViewContainer {
+    private val tempRect = Rect()
+    private val flingBlockCheck = FlingBlockCheck()
+    private val recentsView: RecentsView<*, *> = container.getOverviewPanel()
+    private val detector: SingleAxisSwipeDetector =
+        SingleAxisSwipeDetector(
+            container as Context,
+            this,
+            recentsView.pagedOrientationHandler.upDownSwipeDirection,
+        )
+    private val isRtl = isRtl(container.resources)
+
+    private var taskBeingDragged: TaskView? = null
+    private var launchEndDisplacement: Float = 0f
+    private var playbackController: AnimatorPlaybackController? = null
+    private var verticalFactor: Int = 0
+
+    private fun canTaskLaunchTaskView(taskView: TaskView?) =
+        taskView != null &&
+            taskView === recentsView.currentPageTaskView &&
+            DisplayController.getNavigationMode(container).hasGestures &&
+            (!recentsView.showAsGrid() || taskView.isLargeTile) &&
+            recentsView.isTaskInExpectedScrollPosition(taskView)
+
+    private fun canInterceptTouch(ev: MotionEvent): Boolean =
+        when {
+            // Don't intercept swipes on the nav bar, as user might be trying to go home during a
+            // task dismiss animation.
+            (ev.edgeFlags and EDGE_NAV_BAR) != 0 -> {
+                false
+            }
+
+            // Floating views that a TouchController should not try to intercept touches from.
+            AbstractFloatingView.getTopOpenViewWithType(
+                container,
+                AbstractFloatingView.TYPE_TOUCH_CONTROLLER_NO_INTERCEPT,
+            ) != null -> {
+                false
+            }
+
+            // Disable swiping if the task overlay is modal.
+            taskViewRecentsTouchContext.isRecentsModal -> {
+                false
+            }
+
+            else -> taskViewRecentsTouchContext.isRecentsInteractive
+        }
+
+    override fun onControllerInterceptTouchEvent(ev: MotionEvent): Boolean {
+        if (
+            (ev.action == MotionEvent.ACTION_UP || ev.action == MotionEvent.ACTION_CANCEL) &&
+                playbackController == null
+        ) {
+            clearState()
+        }
+        if (ev.action == MotionEvent.ACTION_DOWN) {
+            if (!onActionDown(ev)) {
+                clearState()
+                return false
+            }
+        }
+        onControllerTouchEvent(ev)
+        return detector.isDraggingState && !detector.wasInitialTouchPositive()
+    }
+
+    override fun onControllerTouchEvent(ev: MotionEvent) = detector.onTouchEvent(ev)
+
+    private fun onActionDown(ev: MotionEvent): Boolean {
+        if (!canInterceptTouch(ev)) {
+            return false
+        }
+        taskBeingDragged =
+            recentsView.taskViews
+                .firstOrNull {
+                    recentsView.isTaskViewVisible(it) && container.dragLayer.isEventOverView(it, ev)
+                }
+                ?.also {
+                    verticalFactor =
+                        recentsView.pagedOrientationHandler.secondaryTranslationDirectionFactor
+                }
+        if (!canTaskLaunchTaskView(taskBeingDragged)) {
+            return false
+        }
+        detector.setDetectableScrollConditions(
+            recentsView.pagedOrientationHandler.getDownDirection(isRtl),
+            /* ignoreSlop = */ false,
+        )
+        return true
+    }
+
+    override fun onDragStart(start: Boolean, startDisplacement: Float) {
+        val taskBeingDragged = taskBeingDragged ?: return
+
+        val secondaryLayerDimension: Int =
+            recentsView.pagedOrientationHandler.getSecondaryDimension(container.getDragLayer())
+        val maxDuration = 2L * secondaryLayerDimension
+        recentsView.clearPendingAnimation()
+        val pendingAnimation =
+            recentsView.createTaskLaunchAnimation(taskBeingDragged, maxDuration, ZOOM_IN)
+        // Since the thumbnail is what is filling the screen, based the end displacement on it.
+        taskBeingDragged.getThumbnailBounds(tempRect, /* relativeToDragLayer= */ true)
+        launchEndDisplacement = (secondaryLayerDimension - tempRect.bottom).toFloat()
+        playbackController =
+            pendingAnimation.createPlaybackController()?.apply {
+                taskViewRecentsTouchContext.onUserControlledAnimationCreated(this)
+                dispatchOnStart()
+            }
+    }
+
+    override fun onDrag(displacement: Float): Boolean {
+        playbackController?.setPlayFraction(
+            boundToRange(displacement / launchEndDisplacement, 0f, 1f)
+        )
+        return true
+    }
+
+    override fun onDragEnd(velocity: Float) {
+        val playbackController = playbackController ?: return
+
+        val isBeyondLaunchThreshold =
+            abs(playbackController.progressFraction) > abs(LAUNCH_THRESHOLD_FRACTION)
+        val isFlingingTowardsLaunch = detector.isFling(velocity) && velocity > 0
+        val isFlingingTowardsRestState = detector.isFling(velocity) && velocity < 0
+        val isLaunching =
+            isFlingingTowardsLaunch || (isBeyondLaunchThreshold && !isFlingingTowardsRestState)
+
+        val progress = playbackController.progressFraction
+        var animationDuration =
+            BaseSwipeDetector.calculateDuration(
+                velocity,
+                if (isLaunching) (1 - progress) else progress,
+            )
+        if (detector.isFling(velocity) && flingBlockCheck.isBlocked && !isLaunching) {
+            animationDuration *= LauncherAnimUtils.blockedFlingDurationFactor(velocity).toLong()
+        }
+
+        playbackController.setEndAction(this::clearState)
+        playbackController.startWithVelocity(
+            container,
+            isLaunching,
+            velocity,
+            launchEndDisplacement,
+            animationDuration,
+        )
+    }
+
+    private fun clearState() {
+        detector.finishedScrolling()
+        detector.setDetectableScrollConditions(0, false)
+        taskBeingDragged = null
+        playbackController = null
+    }
+
+    companion object {
+        private const val LAUNCH_THRESHOLD_FRACTION: Float = 0.5f
+    }
+}
@@ -1,394 +0,0 @@
-/*
- * Copyright (C) 2025 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.launcher3.uioverrides.touchcontrollers
-
-import android.animation.Animator
-import android.animation.AnimatorListenerAdapter
-import android.content.Context
-import android.graphics.Rect
-import android.os.VibrationEffect
-import android.view.MotionEvent
-import android.view.animation.Interpolator
-import com.android.app.animation.Interpolators
-import com.android.launcher3.AbstractFloatingView
-import com.android.launcher3.LauncherAnimUtils.SUCCESS_TRANSITION_PROGRESS
-import com.android.launcher3.LauncherAnimUtils.blockedFlingDurationFactor
-import com.android.launcher3.R
-import com.android.launcher3.Utilities
-import com.android.launcher3.anim.AnimatorPlaybackController
-import com.android.launcher3.anim.PendingAnimation
-import com.android.launcher3.touch.BaseSwipeDetector
-import com.android.launcher3.touch.SingleAxisSwipeDetector
-import com.android.launcher3.util.DisplayController
-import com.android.launcher3.util.FlingBlockCheck
-import com.android.launcher3.util.TouchController
-import com.android.launcher3.util.VibratorWrapper
-import com.android.quickstep.util.VibrationConstants
-import com.android.quickstep.views.RecentsView
-import com.android.quickstep.views.RecentsViewContainer
-import com.android.quickstep.views.TaskView
-import kotlin.math.abs
-
-/** Touch controller for handling task view card swipes */
-class TaskViewTouchController<CONTAINER>(
-    private val container: CONTAINER,
-    private val taskViewRecentsTouchContext: TaskViewRecentsTouchContext,
-) : AnimatorListenerAdapter(), TouchController, SingleAxisSwipeDetector.Listener where
-CONTAINER : Context,
-CONTAINER : RecentsViewContainer {
-    private val recentsView: RecentsView<*, *> = container.getOverviewPanel()
-    private val detector: SingleAxisSwipeDetector =
-        SingleAxisSwipeDetector(
-            container as Context,
-            this,
-            recentsView.pagedOrientationHandler.upDownSwipeDirection,
-        )
-    private val tempRect = Rect()
-    private val isRtl = Utilities.isRtl(container.resources)
-    private val flingBlockCheck = FlingBlockCheck()
-
-    private var currentAnimation: AnimatorPlaybackController? = null
-    private var currentAnimationIsGoingUp = false
-    private var allowGoingUp = false
-    private var allowGoingDown = false
-    private var noIntercept = false
-    private var displacementShift = 0f
-    private var progressMultiplier = 0f
-    private var endDisplacement = 0f
-    private var draggingEnabled = true
-    private var overrideVelocity: Float? = null
-    private var taskBeingDragged: TaskView? = null
-    private var isDismissHapticRunning = false
-
-    private fun canInterceptTouch(ev: MotionEvent): Boolean {
-        val currentAnimation = currentAnimation
-        return when {
-            (ev.edgeFlags and Utilities.EDGE_NAV_BAR) != 0 -> {
-                // Don't intercept swipes on the nav bar, as user might be trying to go home
-                // during a task dismiss animation.
-                currentAnimation?.animationPlayer?.end()
-                false
-            }
-            currentAnimation != null -> {
-                currentAnimation.forceFinishIfCloseToEnd()
-                true
-            }
-            AbstractFloatingView.getTopOpenViewWithType(
-                container,
-                AbstractFloatingView.TYPE_TOUCH_CONTROLLER_NO_INTERCEPT,
-            ) != null -> false
-            else -> taskViewRecentsTouchContext.isRecentsInteractive
-        }
-    }
-
-    override fun onAnimationCancel(animation: Animator) {
-        if (animation === currentAnimation?.target) {
-            clearState()
-        }
-    }
-
-    override fun onControllerInterceptTouchEvent(ev: MotionEvent): Boolean {
-        if (
-            (ev.action == MotionEvent.ACTION_UP || ev.action == MotionEvent.ACTION_CANCEL) &&
-                currentAnimation == null
-        ) {
-            clearState()
-        }
-        if (ev.action == MotionEvent.ACTION_DOWN) {
-            // Disable swiping up and down if the task overlay is modal.
-            if (taskViewRecentsTouchContext.isRecentsModal) {
-                noIntercept = true
-                return false
-            }
-            noIntercept = !canInterceptTouch(ev)
-            if (noIntercept) {
-                return false
-            }
-            // Now figure out which direction scroll events the controller will start
-            // calling the callbacks.
-            var directionsToDetectScroll = 0
-            var ignoreSlopWhenSettling = false
-            if (currentAnimation != null) {
-                directionsToDetectScroll = SingleAxisSwipeDetector.DIRECTION_BOTH
-                ignoreSlopWhenSettling = true
-            } else {
-                taskBeingDragged = null
-                recentsView.taskViews.forEach { taskView ->
-                    if (
-                        recentsView.isTaskViewVisible(taskView) &&
-                            container.dragLayer.isEventOverView(taskView, ev)
-                    ) {
-                        taskBeingDragged = taskView
-                        val upDirection = recentsView.pagedOrientationHandler.getUpDirection(isRtl)
-
-                        // The task can be dragged up to dismiss it
-                        allowGoingUp = true
-
-                        // The task can be dragged down to open it if:
-                        // - It's the current page
-                        // - We support gestures to enter overview
-                        // - It's the focused task if in grid view
-                        // - The task is snapped
-                        allowGoingDown =
-                            taskView === recentsView.currentPageTaskView &&
-                                DisplayController.getNavigationMode(container).hasGestures &&
-                                (!recentsView.showAsGrid() || taskView.isLargeTile) &&
-                                recentsView.isTaskInExpectedScrollPosition(taskView)
-
-                        directionsToDetectScroll =
-                            if (allowGoingDown) SingleAxisSwipeDetector.DIRECTION_BOTH
-                            else upDirection
-                        return@forEach
-                    }
-                }
-                if (taskBeingDragged == null) {
-                    noIntercept = true
-                    return false
-                }
-            }
-            detector.setDetectableScrollConditions(directionsToDetectScroll, ignoreSlopWhenSettling)
-        }
-        if (noIntercept) {
-            return false
-        }
-        onControllerTouchEvent(ev)
-        return detector.isDraggingOrSettling
-    }
-
-    override fun onControllerTouchEvent(ev: MotionEvent): Boolean = detector.onTouchEvent(ev)
-
-    private fun reInitAnimationController(goingUp: Boolean) {
-        if (currentAnimation != null && currentAnimationIsGoingUp == goingUp) {
-            // No need to init
-            return
-        }
-        if ((goingUp && !allowGoingUp) || (!goingUp && !allowGoingDown)) {
-            // Trying to re-init in an unsupported direction.
-            return
-        }
-        val taskBeingDragged = taskBeingDragged ?: return
-        currentAnimation?.setPlayFraction(0f)
-        currentAnimation?.target?.removeListener(this)
-        currentAnimation?.dispatchOnCancel()
-
-        val orientationHandler = recentsView.pagedOrientationHandler
-        currentAnimationIsGoingUp = goingUp
-        val dl = container.dragLayer
-        val secondaryLayerDimension = orientationHandler.getSecondaryDimension(dl)
-        val maxDuration = 2L * secondaryLayerDimension
-        val verticalFactor = orientationHandler.getTaskDragDisplacementFactor(isRtl)
-        val secondaryTaskDimension = orientationHandler.getSecondaryDimension(taskBeingDragged)
-        // The interpolator controlling the most prominent visual movement. We use this to determine
-        // whether we passed SUCCESS_TRANSITION_PROGRESS.
-        val currentInterpolator: Interpolator
-        val pa: PendingAnimation
-        if (goingUp) {
-            currentInterpolator = Interpolators.LINEAR
-            pa = PendingAnimation(maxDuration)
-            recentsView.createTaskDismissAnimation(
-                pa,
-                taskBeingDragged,
-                true, /* animateTaskView */
-                true, /* removeTask */
-                maxDuration,
-                false, /* dismissingForSplitSelection*/
-            )
-
-            endDisplacement = -secondaryTaskDimension.toFloat()
-        } else {
-            currentInterpolator = Interpolators.ZOOM_IN
-            pa =
-                recentsView.createTaskLaunchAnimation(
-                    taskBeingDragged,
-                    maxDuration,
-                    currentInterpolator,
-                )
-
-            // Since the thumbnail is what is filling the screen, based the end displacement on it.
-            taskBeingDragged.getThumbnailBounds(tempRect, /* relativeToDragLayer= */ true)
-            endDisplacement = (secondaryLayerDimension - tempRect.bottom).toFloat()
-        }
-        endDisplacement *= verticalFactor.toFloat()
-        currentAnimation =
-            pa.createPlaybackController().apply {
-                // Setting this interpolator doesn't affect the visual motion, but is used to
-                // determine whether we successfully reached the target state in onDragEnd().
-                target.interpolator = currentInterpolator
-                taskViewRecentsTouchContext.onUserControlledAnimationCreated(this)
-                target.addListener(this@TaskViewTouchController)
-                dispatchOnStart()
-            }
-        progressMultiplier = 1 / endDisplacement
-    }
-
-    override fun onDragStart(start: Boolean, startDisplacement: Float) {
-        if (!draggingEnabled) return
-        val currentAnimation = currentAnimation
-
-        val orientationHandler = recentsView.pagedOrientationHandler
-        if (currentAnimation == null) {
-            reInitAnimationController(orientationHandler.isGoingUp(startDisplacement, isRtl))
-            displacementShift = 0f
-        } else {
-            displacementShift = currentAnimation.progressFraction / progressMultiplier
-            currentAnimation.pause()
-        }
-        flingBlockCheck.unblockFling()
-        overrideVelocity = null
-    }
-
-    override fun onDrag(displacement: Float): Boolean {
-        if (!draggingEnabled) return true
-        val taskBeingDragged = taskBeingDragged ?: return true
-        val currentAnimation = currentAnimation ?: return true
-
-        val orientationHandler = recentsView.pagedOrientationHandler
-        val totalDisplacement = displacement + displacementShift
-        val isGoingUp =
-            if (totalDisplacement == 0f) currentAnimationIsGoingUp
-            else orientationHandler.isGoingUp(totalDisplacement, isRtl)
-        if (isGoingUp != currentAnimationIsGoingUp) {
-            reInitAnimationController(isGoingUp)
-            flingBlockCheck.blockFling()
-        } else {
-            flingBlockCheck.onEvent()
-        }
-
-        if (isGoingUp) {
-            if (currentAnimation.progressFraction < ANIMATION_PROGRESS_FRACTION_MIDPOINT) {
-                // Halve the value when dismissing, as we are animating the drag across the full
-                // length for only the first half of the progress
-                currentAnimation.setPlayFraction(
-                    Utilities.boundToRange(totalDisplacement * progressMultiplier / 2, 0f, 1f)
-                )
-            } else {
-                // Set mOverrideVelocity to control task dismiss velocity in onDragEnd
-                var velocityDimenId = R.dimen.default_task_dismiss_drag_velocity
-                if (recentsView.showAsGrid()) {
-                    velocityDimenId =
-                        if (taskBeingDragged.isLargeTile) {
-                            R.dimen.default_task_dismiss_drag_velocity_grid_focus_task
-                        } else {
-                            R.dimen.default_task_dismiss_drag_velocity_grid
-                        }
-                }
-                overrideVelocity = -taskBeingDragged.resources.getDimension(velocityDimenId)
-
-                // Once halfway through task dismissal interpolation, switch from reversible
-                // dragging-task animation to playing the remaining task translation animations,
-                // while this is in progress disable dragging.
-                draggingEnabled = false
-            }
-        } else {
-            currentAnimation.setPlayFraction(
-                Utilities.boundToRange(totalDisplacement * progressMultiplier, 0f, 1f)
-            )
-        }
-
-        return true
-    }
-
-    override fun onDragEnd(velocity: Float) {
-        val taskBeingDragged = taskBeingDragged ?: return
-        val currentAnimation = currentAnimation ?: return
-
-        // Limit velocity, as very large scalar values make animations play too quickly
-        val maxTaskDismissDragVelocity =
-            taskBeingDragged.resources.getDimension(R.dimen.max_task_dismiss_drag_velocity)
-        val endVelocity =
-            Utilities.boundToRange(
-                overrideVelocity ?: velocity,
-                -maxTaskDismissDragVelocity,
-                maxTaskDismissDragVelocity,
-            )
-        overrideVelocity = null
-
-        var fling = draggingEnabled && detector.isFling(endVelocity)
-        val goingToEnd: Boolean
-        val blockedFling = fling && flingBlockCheck.isBlocked
-        if (blockedFling) {
-            fling = false
-        }
-        val orientationHandler = recentsView.pagedOrientationHandler
-        val goingUp = orientationHandler.isGoingUp(endVelocity, isRtl)
-        val progress = currentAnimation.progressFraction
-        val interpolatedProgress = currentAnimation.interpolatedProgress
-        goingToEnd =
-            if (fling) {
-                goingUp == currentAnimationIsGoingUp
-            } else {
-                interpolatedProgress > SUCCESS_TRANSITION_PROGRESS
-            }
-        var animationDuration =
-            BaseSwipeDetector.calculateDuration(
-                endVelocity,
-                if (goingToEnd) (1 - progress) else progress,
-            )
-        if (blockedFling && !goingToEnd) {
-            animationDuration *= blockedFlingDurationFactor(endVelocity).toLong()
-        }
-        // Due to very high or low velocity dismissals, animation durations can be inconsistently
-        // long or short. Bound the duration for animation of task translations for a more
-        // standardized feel.
-        animationDuration =
-            Utilities.boundToRange(
-                animationDuration,
-                MIN_TASK_DISMISS_ANIMATION_DURATION,
-                MAX_TASK_DISMISS_ANIMATION_DURATION,
-            )
-
-        currentAnimation.setEndAction { this.clearState() }
-        currentAnimation.startWithVelocity(
-            container,
-            goingToEnd,
-            abs(endVelocity.toDouble()).toFloat(),
-            endDisplacement,
-            animationDuration,
-        )
-        if (goingUp && goingToEnd && !isDismissHapticRunning) {
-            VibratorWrapper.INSTANCE.get(container)
-                .vibrate(
-                    TASK_DISMISS_VIBRATION_PRIMITIVE,
-                    TASK_DISMISS_VIBRATION_PRIMITIVE_SCALE,
-                    TASK_DISMISS_VIBRATION_FALLBACK,
-                )
-            isDismissHapticRunning = true
-        }
-
-        draggingEnabled = true
-    }
-
-    private fun clearState() {
-        detector.finishedScrolling()
-        detector.setDetectableScrollConditions(0, false)
-        draggingEnabled = true
-        taskBeingDragged = null
-        currentAnimation = null
-        isDismissHapticRunning = false
-    }
-
-    companion object {
-        private const val ANIMATION_PROGRESS_FRACTION_MIDPOINT = 0.5f
-        private const val MIN_TASK_DISMISS_ANIMATION_DURATION: Long = 300
-        private const val MAX_TASK_DISMISS_ANIMATION_DURATION: Long = 600
-
-        private const val TASK_DISMISS_VIBRATION_PRIMITIVE: Int =
-            VibrationEffect.Composition.PRIMITIVE_TICK
-        private const val TASK_DISMISS_VIBRATION_PRIMITIVE_SCALE: Float = 1f
-        private val TASK_DISMISS_VIBRATION_FALLBACK: VibrationEffect =
-            VibrationConstants.EFFECT_TEXTURE_TICK
-    }
-}
@@ -21,8 +21,9 @@ import android.content.Context;
 import android.util.AttributeSet;

 import com.android.launcher3.statemanager.StatefulContainer;
+import com.android.launcher3.uioverrides.touchcontrollers.TaskViewDismissTouchController;
+import com.android.launcher3.uioverrides.touchcontrollers.TaskViewLaunchTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.TaskViewRecentsTouchContext;
-import com.android.launcher3.uioverrides.touchcontrollers.TaskViewTouchController;
 import com.android.launcher3.uioverrides.touchcontrollers.TaskViewTouchControllerDeprecated;
 import com.android.launcher3.util.TouchController;
 import com.android.launcher3.views.BaseDragLayer;
@@ -54,10 +55,18 @@ public class RecentsDragLayer<T extends Context & RecentsViewContainer

    @Override
    public void recreateControllers() {
-        mControllers = new TouchController[]{
-                enableExpressiveDismissTaskMotion() ? new TaskViewTouchController<>(mContainer,
-                        mTaskViewRecentsTouchContext) : new TaskViewTouchControllerDeprecated<>(
-                        mContainer, mTaskViewRecentsTouchContext),
-                new FallbackNavBarTouchController(mContainer)};
+        mControllers = enableExpressiveDismissTaskMotion()
+                ? new TouchController[]{
+                        new TaskViewLaunchTouchController<>(mContainer,
+                                mTaskViewRecentsTouchContext),
+                        new TaskViewDismissTouchController<>(mContainer,
+                                mTaskViewRecentsTouchContext),
+                        new FallbackNavBarTouchController(mContainer)
+                }
+                : new TouchController[]{
+                        new TaskViewTouchControllerDeprecated<>(mContainer,
+                                mTaskViewRecentsTouchContext),
+                        new FallbackNavBarTouchController(mContainer)
+                };
    }
 }
@@ -306,6 +306,10 @@ open class LandscapePagedViewHandler : RecentsPagedOrientationHandler {
        if (isRtl) SingleAxisSwipeDetector.DIRECTION_NEGATIVE
        else SingleAxisSwipeDetector.DIRECTION_POSITIVE

+    override fun getDownDirection(isRtl: Boolean): Int =
+        if (isRtl) SingleAxisSwipeDetector.DIRECTION_POSITIVE
+        else SingleAxisSwipeDetector.DIRECTION_NEGATIVE
+
    override fun isGoingUp(displacement: Float, isRtl: Boolean): Boolean =
        if (isRtl) displacement < 0 else displacement > 0

@@ -309,6 +309,12 @@ public class PortraitPagedViewHandler extends DefaultPagedViewHandler implements
        return SingleAxisSwipeDetector.DIRECTION_POSITIVE;
    }

+    @Override
+    public int getDownDirection(boolean isRtl) {
+        // Ignore rtl since it only affects X value displacement, Y displacement doesn't change
+        return SingleAxisSwipeDetector.DIRECTION_NEGATIVE;
+    }
+
    @Override
    public boolean isGoingUp(float displacement, boolean isRtl) {
        // Ignore rtl since it only affects X value displacement, Y displacement doesn't change
@@ -332,6 +332,9 @@ interface RecentsPagedOrientationHandler : PagedOrientationHandler {
    /** @return Given [.getUpDownSwipeDirection], whether POSITIVE or NEGATIVE is up. */
    fun getUpDirection(isRtl: Boolean): Int

+    /** @return Given [.getUpDownSwipeDirection], whether POSITIVE or NEGATIVE is down. */
+    fun getDownDirection(isRtl: Boolean): Int
+
    /** @return Whether the displacement is going towards the top of the screen. */
    fun isGoingUp(displacement: Float, isRtl: Boolean): Boolean

@@ -351,6 +351,10 @@ class SeascapePagedViewHandler : LandscapePagedViewHandler() {
        if (isRtl) SingleAxisSwipeDetector.DIRECTION_POSITIVE
        else SingleAxisSwipeDetector.DIRECTION_NEGATIVE

+    override fun getDownDirection(isRtl: Boolean): Int =
+        if (isRtl) SingleAxisSwipeDetector.DIRECTION_NEGATIVE
+        else SingleAxisSwipeDetector.DIRECTION_POSITIVE
+
    override fun isGoingUp(displacement: Float, isRtl: Boolean): Boolean =
        if (isRtl) displacement > 0 else displacement < 0

@@ -136,6 +136,7 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 import androidx.core.graphics.ColorUtils;
+import androidx.dynamicanimation.animation.SpringAnimation;

 import com.android.internal.jank.Cuj;
 import com.android.launcher3.AbstractFloatingView;
@@ -165,6 +166,7 @@ import com.android.launcher3.statemanager.StatefulContainer;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.shared.TestProtocol;
 import com.android.launcher3.touch.OverScroll;
+import com.android.launcher3.touch.SingleAxisSwipeDetector;
 import com.android.launcher3.util.CancellableTask;
 import com.android.launcher3.util.DynamicResource;
 import com.android.launcher3.util.IntArray;
@@ -240,6 +242,7 @@ import com.android.wm.shell.shared.desktopmode.DesktopModeTransitionSource;
 import kotlin.Unit;
 import kotlin.collections.CollectionsKt;

+import kotlin.jvm.functions.Function0;
 import kotlinx.coroutines.CoroutineScope;

 import java.util.ArrayList;
@@ -5703,6 +5706,13 @@ public abstract class RecentsView<
                mTempRect, mContainer.getDeviceProfile(), mTempPointF);
    }

+    /**
+     * Clears the existing PendingAnimation.
+     */
+    public void clearPendingAnimation() {
+        mPendingAnimation = null;
+    }
+
    public PendingAnimation createTaskLaunchAnimation(
            TaskView taskView, long duration, Interpolator interpolator) {
        if (FeatureFlags.IS_STUDIO_BUILD && mPendingAnimation != null) {
@@ -5864,6 +5874,10 @@ public abstract class RecentsView<
        mEnableDrawingLiveTile = enableDrawingLiveTile;
    }

+    public boolean getEnableDrawingLiveTile() {
+        return mEnableDrawingLiveTile;
+    }
+
    public void redrawLiveTile() {
        runActionOnRemoteHandles(remoteTargetHandle -> {
            TransformParams params = remoteTargetHandle.getTransformParams();
@@ -6897,6 +6911,19 @@ public abstract class RecentsView<
        return Typeface.Builder.NORMAL_WEIGHT;
    }

+    /**
+     * Creates the spring animations which run as a task settles back into its place in overview.
+     *
+     * <p>When a task dismiss is cancelled, the task will return to its original position via a
+     * spring animation.
+     */
+    public SpringAnimation createTaskDismissSettlingSpringAnimation(TaskView draggedTaskView,
+            float velocity, boolean isDismissing, SingleAxisSwipeDetector detector,
+            int dismissLength, Function0<Unit> onEndRunnable) {
+        return mUtils.createTaskDismissSettlingSpringAnimation(draggedTaskView, velocity,
+                isDismissing, detector, dismissLength, onEndRunnable);
+    }
+
    public interface TaskLaunchListener {
        void onTaskLaunched();
    }
@@ -19,14 +19,21 @@ package com.android.quickstep.views
 import android.graphics.Rect
 import android.view.View
 import androidx.core.view.children
+import androidx.dynamicanimation.animation.FloatPropertyCompat
+import androidx.dynamicanimation.animation.SpringAnimation
+import androidx.dynamicanimation.animation.SpringForce
 import com.android.launcher3.Flags.enableLargeDesktopWindowingTile
 import com.android.launcher3.Flags.enableSeparateExternalDisplayTasks
+import com.android.launcher3.R
+import com.android.launcher3.touch.SingleAxisSwipeDetector
+import com.android.launcher3.util.DynamicResource
 import com.android.launcher3.util.IntArray
 import com.android.quickstep.util.GroupTask
 import com.android.quickstep.util.isExternalDisplay
 import com.android.quickstep.views.RecentsView.RUNNING_TASK_ATTACH_ALPHA
 import com.android.systemui.shared.recents.model.ThumbnailData
 import java.util.function.BiConsumer
+import kotlin.math.abs

 /**
 * Helper class for [RecentsView]. This util class contains refactored and extracted functions from
@@ -294,6 +301,58 @@ class RecentsViewUtils(private val recentsView: RecentsView<*, *>) {
        }
    }

+    /**
+     * Creates the spring animations which run when a dragged task view in overview is released.
+     *
+     * <p>When a task dismiss is cancelled, the task will return to its original position via a
+     * spring animation.
+     */
+    fun createTaskDismissSettlingSpringAnimation(
+        draggedTaskView: TaskView?,
+        velocity: Float,
+        isDismissing: Boolean,
+        detector: SingleAxisSwipeDetector,
+        dismissLength: Int,
+        onEndRunnable: () -> Unit,
+    ): SpringAnimation? {
+        draggedTaskView ?: return null
+        val taskDismissFloatProperty =
+            FloatPropertyCompat.createFloatPropertyCompat(
+                draggedTaskView.secondaryDismissTranslationProperty
+            )
+        val rp = DynamicResource.provider(recentsView.mContainer)
+        return SpringAnimation(draggedTaskView, taskDismissFloatProperty)
+            .setSpring(
+                SpringForce()
+                    .setDampingRatio(rp.getFloat(R.dimen.dismiss_task_trans_y_damping_ratio))
+                    .setStiffness(rp.getFloat(R.dimen.dismiss_task_trans_y_stiffness))
+            )
+            .setStartVelocity(if (detector.isFling(velocity)) velocity else 0f)
+            .addUpdateListener { animation, value, _ ->
+                if (isDismissing && abs(value) >= abs(dismissLength)) {
+                    // TODO(b/393553524): Remove 0 alpha, instead animate task fully off screen.
+                    draggedTaskView.alpha = 0f
+                    animation.cancel()
+                } else if (draggedTaskView.isRunningTask && recentsView.enableDrawingLiveTile) {
+                    recentsView.runActionOnRemoteHandles { remoteTargetHandle ->
+                        remoteTargetHandle.taskViewSimulator.taskSecondaryTranslation.value =
+                            taskDismissFloatProperty.getValue(draggedTaskView)
+                    }
+                    recentsView.redrawLiveTile()
+                }
+            }
+            .addEndListener { _, _, _, _ ->
+                if (isDismissing) {
+                    recentsView.dismissTask(
+                        draggedTaskView,
+                        /* animateTaskView = */ false,
+                        /* removeTask = */ true,
+                    )
+                }
+                onEndRunnable()
+            }
+    }
+
    companion object {
        val TEMP_RECT = Rect()
    }
@@ -213,7 +213,7 @@ constructor(
        get() =
            pagedOrientationHandler.getPrimaryValue(DISMISS_TRANSLATION_X, DISMISS_TRANSLATION_Y)

-    protected val secondaryDismissTranslationProperty: FloatProperty<TaskView>
+    val secondaryDismissTranslationProperty: FloatProperty<TaskView>
        get() =
            pagedOrientationHandler.getSecondaryValue(DISMISS_TRANSLATION_X, DISMISS_TRANSLATION_Y)