Merge branch 'ub-launcher3-edmonton-polish' into pi-devandroid-9.0.0_r30android-9.0.0_r22android-9.0.0_r21android-9.0.0_r20android-9.0.0_r19android-9.0.0_r16pie-qpr1-s3-releasepie-qpr1-s2-releasepie-qpr1-s1-releasepie-qpr1-releasepie-dr1-dev

Bug: 111438498
Bug: 80134723
Test: manual
Change-Id: If50f0cfd7ce02978eb0d2ab3a8d5e2c1550548c6

13 files changed, 257 insertions, 166 deletions

diff --git a/quickstep/res/values/dimens.xml b/quickstep/res/values/dimens.xml
index 0af2b28250..49c4492b60 100644
--- a/quickstep/res/values/dimens.xml
+++ b/quickstep/res/values/dimens.xml
@@ -21,6 +21,7 @@
     <dimen name="task_thumbnail_icon_size">48dp</dimen>
     <dimen name="task_corner_radius">2dp</dimen>
     <dimen name="recents_page_spacing">10dp</dimen>
+    <dimen name="recents_clear_all_deadzone_vertical_margin">70dp</dimen>
     <dimen name="quickscrub_adjacent_visible_width">20dp</dimen>
 
     <!-- The speed in dp/s at which the user needs to be scrolling in recents such that we start
@@ -32,7 +33,7 @@
 
     <!-- Launcher app transition -->
     <dimen name="content_trans_y">50dp</dimen>
-    <dimen name="springs_trans_y">-70dp</dimen>
+    <dimen name="workspace_trans_y">50dp</dimen>
     <dimen name="closing_window_trans_y">115dp</dimen>
 
     <dimen name="recents_empty_message_text_size">16sp</dimen>
diff --git a/quickstep/src/com/android/launcher3/LauncherAppTransitionManagerImpl.java b/quickstep/src/com/android/launcher3/LauncherAppTransitionManagerImpl.java
index 252e3eaeee..14633afa52 100644
--- a/quickstep/src/com/android/launcher3/LauncherAppTransitionManagerImpl.java
+++ b/quickstep/src/com/android/launcher3/LauncherAppTransitionManagerImpl.java
@@ -16,7 +16,6 @@
 
 package com.android.launcher3;
 
-import static android.view.View.TRANSLATION_Y;
 import static com.android.launcher3.BaseActivity.INVISIBLE_ALL;
 import static com.android.launcher3.BaseActivity.INVISIBLE_BY_APP_TRANSITIONS;
 import static com.android.launcher3.BaseActivity.INVISIBLE_BY_PENDING_FLAGS;
@@ -28,10 +27,8 @@ import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.Utilities.postAsyncCallback;
 import static com.android.launcher3.allapps.AllAppsTransitionController.ALL_APPS_PROGRESS;
 import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE;
-import static com.android.launcher3.anim.Interpolators.DEACCEL;
 import static com.android.launcher3.anim.Interpolators.DEACCEL_1_7;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
-import static com.android.launcher3.anim.Interpolators.OSCILLATE;
 import static com.android.launcher3.dragndrop.DragLayer.ALPHA_INDEX_TRANSITIONS;
 import static com.android.quickstep.TaskUtils.findTaskViewToLaunch;
 import static com.android.quickstep.TaskUtils.getRecentsWindowAnimator;
@@ -57,7 +54,6 @@ import android.os.CancellationSignal;
 import android.os.Handler;
 import android.os.Looper;
 import android.util.Pair;
-import android.util.Property;
 import android.view.View;
 import android.view.ViewGroup;
 
@@ -119,20 +115,12 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
     public static final int RECENTS_LAUNCH_DURATION = 336;
     public static final int RECENTS_QUICKSCRUB_LAUNCH_DURATION = 300;
-    private static final int LAUNCHER_RESUME_START_DELAY = 40;
+    private static final int LAUNCHER_RESUME_START_DELAY = 100;
     private static final int CLOSING_TRANSITION_DURATION_MS = 250;
 
     // Progress = 0: All apps is fully pulled up, Progress = 1: All apps is fully pulled down.
     public static final float ALL_APPS_PROGRESS_OFF_SCREEN = 1.3059858f;
 
-    private static final int APP_CLOSE_ROW_START_DELAY_MS = 8;
-
-    // The sum of [slide, oscillate, and settle] should be <= LAUNCHER_RESUME_TOTAL_DURATION.
-    private static final int LAUNCHER_RESUME_TOTAL_DURATION = 346;
-    private static final int SPRING_SLIDE_DURATION = 166;
-    private static final int SPRING_OSCILLATE_DURATION = 130;
-    private static final int SPRING_SETTLE_DURATION = 50;
-
     private final Launcher mLauncher;
     private final DragLayer mDragLayer;
     private final AlphaProperty mDragLayerAlpha;
@@ -141,8 +129,7 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
     private final boolean mIsRtl;
 
     private final float mContentTransY;
-    private final float mStartSlideTransY;
-    private final float mEndSlideTransY;
+    private final float mWorkspaceTransY;
     private final float mClosingWindowTransY;
 
     private DeviceProfile mDeviceProfile;
@@ -172,9 +159,8 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
 
         Resources res = mLauncher.getResources();
         mContentTransY = res.getDimensionPixelSize(R.dimen.content_trans_y);
+        mWorkspaceTransY = res.getDimensionPixelSize(R.dimen.workspace_trans_y);
         mClosingWindowTransY = res.getDimensionPixelSize(R.dimen.closing_window_trans_y);
-        mStartSlideTransY = res.getDimensionPixelSize(R.dimen.springs_trans_y);
-        mEndSlideTransY = -mStartSlideTransY * 0.1f;
 
         mLauncher.addOnDeviceProfileChangeListener(this);
         registerRemoteAnimations();
@@ -786,33 +772,25 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
             });
         } else {
             AnimatorSet workspaceAnimator = new AnimatorSet();
-            workspaceAnimator.setStartDelay(LAUNCHER_RESUME_START_DELAY);
 
-            ShortcutAndWidgetContainer currentPage = ((CellLayout) mLauncher.getWorkspace()
-                    .getChildAt(mLauncher.getWorkspace().getCurrentPage()))
-                    .getShortcutsAndWidgets();
+            mDragLayer.setTranslationY(-mWorkspaceTransY);;
+            workspaceAnimator.play(ObjectAnimator.ofFloat(mDragLayer, View.TRANSLATION_Y,
+                    -mWorkspaceTransY, 0));
 
-            // Set up springs on workspace items.
-            for (int i = currentPage.getChildCount() - 1; i >= 0; i--) {
-                View child = currentPage.getChildAt(i);
-                CellLayout.LayoutParams lp = ((CellLayout.LayoutParams) child.getLayoutParams());
-                addStaggeredAnimationForView(child, workspaceAnimator, lp.cellY + lp.cellVSpan);
-            }
+            mDragLayerAlpha.setValue(0);
+            workspaceAnimator.play(ObjectAnimator.ofFloat(
+                    mDragLayerAlpha, MultiValueAlpha.VALUE, 0, 1f));
 
-            // Set up a spring for the shelf.
-            if (!mLauncher.getDeviceProfile().isVerticalBarLayout()) {
-                AllAppsTransitionController allAppsController = mLauncher.getAllAppsController();
-                float shiftRange = allAppsController.getShiftRange();
-                float slideStart = shiftRange / (shiftRange - mStartSlideTransY);
-                float oscillateStart = shiftRange / (shiftRange - mEndSlideTransY);
-
-                buildSpringAnimation(workspaceAnimator, allAppsController, ALL_APPS_PROGRESS,
-                        0 /* startDelay */, slideStart, oscillateStart, 1f /* finalPosition */);
-            }
+            workspaceAnimator.setStartDelay(LAUNCHER_RESUME_START_DELAY);
+            workspaceAnimator.setDuration(333);
+            workspaceAnimator.setInterpolator(Interpolators.DEACCEL_1_7);
 
             mDragLayer.getScrim().hideSysUiScrim(true);
+
             // Pause page indicator animations as they lead to layer trashing.
             mLauncher.getWorkspace().getPageIndicator().pauseAnimations();
+            mDragLayer.setLayerType(View.LAYER_TYPE_HARDWARE, null);
+
             workspaceAnimator.addListener(new AnimatorListenerAdapter() {
                 @Override
                 public void onAnimationEnd(Animator animation) {
@@ -823,66 +801,6 @@ public class LauncherAppTransitionManagerImpl extends LauncherAppTransitionManag
         }
     }
 
-    /**
-     * Adds an alpha/trans animator for {@param v}, with a start delay based on the view's row.
-     *
-     * @param v View in a ShortcutAndWidgetContainer.
-     * @param row The bottom-most row that contains the view.
-     */
-    private void addStaggeredAnimationForView(View v, AnimatorSet outAnimator, int row) {
-        // Invert the rows, because we stagger starting from the bottom of the screen.
-        int invertedRow = LauncherAppState.getIDP(mLauncher).numRows - row + 1;
-        long startDelay = (long) (invertedRow * APP_CLOSE_ROW_START_DELAY_MS);
-
-        v.setAlpha(0);
-        ObjectAnimator alpha = ObjectAnimator.ofFloat(v, View.ALPHA, 1f);
-        alpha.setInterpolator(LINEAR);
-        alpha.setDuration(SPRING_SLIDE_DURATION + SPRING_OSCILLATE_DURATION);
-        alpha.setStartDelay(startDelay);
-        outAnimator.play(alpha);
-
-        buildSpringAnimation(outAnimator, v, TRANSLATION_Y, startDelay, mStartSlideTransY,
-                mEndSlideTransY, 0f /* finalPosition */);
-
-        outAnimator.addListener(new AnimatorListenerAdapter() {
-            @Override
-            public void onAnimationEnd(Animator animation) {
-                v.setAlpha(1f);
-                v.setTranslationY(0);
-            }
-        });
-    }
-
-    /**
-     * Spring animations consists of three sequential animators: a slide, an oscillation, and
-     * a settle.
-     */
-    private <T> void buildSpringAnimation(AnimatorSet outAnimator, T objectToSpring,
-            Property<T, Float> property, long startDelay, float slideStart, float oscillateStart,
-            float finalPosition) {
-        // Ensures a clean hand-off between slide and oscillate.
-        float slideEnd = Utilities.mapToRange(0, 0, 1f, oscillateStart, finalPosition, OSCILLATE);
-
-        property.set(objectToSpring, slideStart);
-
-        ObjectAnimator slideIn = ObjectAnimator.ofFloat(objectToSpring, property, slideStart,
-                slideEnd);
-        slideIn.setInterpolator(DEACCEL);
-        slideIn.setStartDelay(startDelay);
-        slideIn.setDuration(SPRING_SLIDE_DURATION);
-
-        ObjectAnimator oscillate = ObjectAnimator.ofFloat(objectToSpring, property, oscillateStart,
-                finalPosition);
-        oscillate.setInterpolator(OSCILLATE);
-        oscillate.setDuration(SPRING_OSCILLATE_DURATION);
-
-        ObjectAnimator settle = ObjectAnimator.ofFloat(objectToSpring, property, finalPosition);
-        settle.setInterpolator(LINEAR);
-        settle.setDuration(SPRING_SETTLE_DURATION);
-
-        outAnimator.playSequentially(slideIn, oscillate, settle);
-    }
-
     private void resetContentView() {
         mLauncher.getWorkspace().getPageIndicator().skipAnimationsToEnd();
         mDragLayerAlpha.setValue(1f);
diff --git a/quickstep/src/com/android/quickstep/LongSwipeHelper.java b/quickstep/src/com/android/quickstep/LongSwipeHelper.java
index 0785093302..6b66ec8db5 100644
--- a/quickstep/src/com/android/quickstep/LongSwipeHelper.java
+++ b/quickstep/src/com/android/quickstep/LongSwipeHelper.java
@@ -20,17 +20,22 @@ import static com.android.launcher3.LauncherState.ALL_APPS;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.anim.Interpolators.DEACCEL;
 import static com.android.quickstep.WindowTransformSwipeHandler.MAX_SWIPE_DURATION;
+import static com.android.quickstep.WindowTransformSwipeHandler.MIN_OVERSHOOT_DURATION;
 
 import android.animation.ValueAnimator;
+import android.view.animation.Interpolator;
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherAnimUtils;
 import com.android.launcher3.LauncherStateManager;
 import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
 import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.launcher3.allapps.DiscoveryBounce;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.AnimatorSetBuilder;
+import com.android.launcher3.anim.Interpolators;
+import com.android.launcher3.anim.Interpolators.OvershootParams;
 import com.android.launcher3.uioverrides.PortraitStatesTouchController;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
@@ -89,7 +94,9 @@ public class LongSwipeHelper {
     }
 
     public void end(float velocity, boolean isFling, Runnable callback) {
+        float velocityPxPerMs = velocity / 1000;
         long duration = MAX_SWIPE_DURATION;
+        Interpolator interpolator = DEACCEL;
 
         final float currentFraction = mAnimator.getProgressFraction();
         final boolean toAllApps;
@@ -107,6 +114,16 @@ public class LongSwipeHelper {
             long expectedDuration = Math.abs(Math.round((endProgress - currentFraction)
                     * MAX_SWIPE_DURATION * SWIPE_DURATION_MULTIPLIER));
             duration = Math.min(MAX_SWIPE_DURATION, expectedDuration);
+
+            if (blockedFling && !toAllApps) {
+                Interpolators.OvershootParams overshoot = new OvershootParams(currentFraction,
+                        currentFraction, endProgress, velocityPxPerMs, (int) mMaxSwipeDistance);
+                duration = (overshoot.duration + duration);
+                duration = Utilities.boundToRange(duration, MIN_OVERSHOOT_DURATION,
+                        MAX_SWIPE_DURATION);
+                interpolator = overshoot.interpolator;
+                endProgress = overshoot.end;
+            }
         } else {
             toAllApps = velocity < 0;
             endProgress = toAllApps ? 1 : 0;
@@ -119,18 +136,16 @@ public class LongSwipeHelper {
                 // we want the page's snap velocity to approximately match the velocity at
                 // which the user flings, so we scale the duration by a value near to the
                 // derivative of the scroll interpolator at zero, ie. 2.
-                long baseDuration = Math.round(1000 * Math.abs(distanceToTravel / velocity));
+                long baseDuration = Math.round(Math.abs(distanceToTravel / velocityPxPerMs));
                 duration = Math.min(MAX_SWIPE_DURATION, 2 * baseDuration);
             }
         }
 
-        if (blockedFling && !toAllApps) {
-            duration *= LauncherAnimUtils.blockedFlingDurationFactor(0);
-        }
         final boolean finalIsFling = isFling;
         mAnimator.setEndAction(() -> onSwipeAnimationComplete(toAllApps, finalIsFling, callback));
+
         ValueAnimator animator = mAnimator.getAnimationPlayer();
-        animator.setDuration(duration).setInterpolator(DEACCEL);
+        animator.setDuration(duration).setInterpolator(interpolator);
         animator.setFloatValues(currentFraction, endProgress);
         animator.start();
     }
diff --git a/quickstep/src/com/android/quickstep/TaskSystemShortcut.java b/quickstep/src/com/android/quickstep/TaskSystemShortcut.java
index c77d0c7d79..5a6312d4e1 100644
--- a/quickstep/src/com/android/quickstep/TaskSystemShortcut.java
+++ b/quickstep/src/com/android/quickstep/TaskSystemShortcut.java
@@ -189,9 +189,14 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
                     final Rect taskBounds = new Rect(position[0], position[1],
                             position[0] + width, position[1] + height);
 
+                    // Take the thumbnail of the task without a scrim and apply it back after
+                    float alpha = thumbnailView.getDimAlpha();
+                    thumbnailView.setDimAlpha(0);
                     Bitmap thumbnail = RecentsTransition.drawViewIntoHardwareBitmap(
                             taskBounds.width(), taskBounds.height(), thumbnailView, 1f,
                             Color.BLACK);
+                    thumbnailView.setDimAlpha(alpha);
+
                     AppTransitionAnimationSpecsFuture future =
                             new AppTransitionAnimationSpecsFuture(mHandler) {
                         @Override
diff --git a/quickstep/src/com/android/quickstep/WindowTransformSwipeHandler.java b/quickstep/src/com/android/quickstep/WindowTransformSwipeHandler.java
index ff3137d441..902eb950de 100644
--- a/quickstep/src/com/android/quickstep/WindowTransformSwipeHandler.java
+++ b/quickstep/src/com/android/quickstep/WindowTransformSwipeHandler.java
@@ -21,6 +21,7 @@ import static com.android.launcher3.Utilities.SINGLE_FRAME_MS;
 import static com.android.launcher3.Utilities.postAsyncCallback;
 import static com.android.launcher3.anim.Interpolators.DEACCEL;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
+import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
 import static com.android.quickstep.QuickScrubController.QUICK_SCRUB_FROM_APP_START_DURATION;
 import static com.android.quickstep.TouchConsumer.INTERACTION_NORMAL;
 import static com.android.quickstep.TouchConsumer.INTERACTION_QUICK_SCRUB;
@@ -163,6 +164,7 @@ public class WindowTransformSwipeHandler<T extends BaseDraggingActivity> {
 
     public static final long MAX_SWIPE_DURATION = 350;
     public static final long MIN_SWIPE_DURATION = 80;
+    public static final long MIN_OVERSHOOT_DURATION = 120;
 
     public static final float MIN_PROGRESS_FOR_OVERVIEW = 0.5f;
     private static final float SWIPE_DURATION_MULTIPLIER =
@@ -498,7 +500,8 @@ public class WindowTransformSwipeHandler<T extends BaseDraggingActivity> {
         setStateOnUiThread(STATE_QUICK_SCRUB_START | STATE_GESTURE_COMPLETED);
 
         // Start the window animation without waiting for launcher.
-        animateToProgress(mCurrentShift.value, 1f, QUICK_SCRUB_FROM_APP_START_DURATION, LINEAR);
+        animateToProgress(mCurrentShift.value, 1f, QUICK_SCRUB_FROM_APP_START_DURATION, LINEAR,
+                true /* goingToHome */);
     }
 
     private void shiftAnimationDestinationForQuickscrub() {
@@ -699,36 +702,46 @@ public class WindowTransformSwipeHandler<T extends BaseDraggingActivity> {
     private void handleNormalGestureEnd(float endVelocity, boolean isFling) {
         float velocityPxPerMs = endVelocity / 1000;
         long duration = MAX_SWIPE_DURATION;
-        final float endShift;
+        float currentShift = mCurrentShift.value;
+        final boolean goingToHome;
+        float endShift;
         final float startShift;
-        final Interpolator interpolator;
+        Interpolator interpolator = DEACCEL;
         if (!isFling) {
-            endShift = mCurrentShift.value >= MIN_PROGRESS_FOR_OVERVIEW && mGestureStarted ? 1 : 0;
-            long expectedDuration = Math.abs(Math.round((endShift - mCurrentShift.value)
+            goingToHome = currentShift >= MIN_PROGRESS_FOR_OVERVIEW && mGestureStarted;
+            endShift = goingToHome ? 1 : 0;
+            long expectedDuration = Math.abs(Math.round((endShift - currentShift)
                     * MAX_SWIPE_DURATION * SWIPE_DURATION_MULTIPLIER));
             duration = Math.min(MAX_SWIPE_DURATION, expectedDuration);
-            startShift = mCurrentShift.value;
-            interpolator = DEACCEL;
+            startShift = currentShift;
+            interpolator = goingToHome ? OVERSHOOT_1_2 : DEACCEL;
         } else {
-            endShift = endVelocity < 0 ? 1 : 0;
-            interpolator = endVelocity < 0
-                    ? Interpolators.overshootInterpolatorForVelocity(velocityPxPerMs, 2f)
-                    : DEACCEL;
+            goingToHome = endVelocity < 0;
+            endShift = goingToHome ? 1 : 0;
+            startShift = Utilities.boundToRange(currentShift - velocityPxPerMs
+                    * SINGLE_FRAME_MS / mTransitionDragLength, 0, 1);
             float minFlingVelocity = mContext.getResources()
                     .getDimension(R.dimen.quickstep_fling_min_velocity);
             if (Math.abs(endVelocity) > minFlingVelocity && mTransitionDragLength > 0) {
-                float distanceToTravel = (endShift - mCurrentShift.value) * mTransitionDragLength;
-
-                // we want the page's snap velocity to approximately match the velocity at
-                // which the user flings, so we scale the duration by a value near to the
-                // derivative of the scroll interpolator at zero, ie. 2.
-                long baseDuration = Math.round(Math.abs(distanceToTravel / velocityPxPerMs));
-                duration = Math.min(MAX_SWIPE_DURATION, 2 * baseDuration);
+                if (goingToHome) {
+                    Interpolators.OvershootParams overshoot = new Interpolators.OvershootParams(
+                            startShift, endShift, endShift, velocityPxPerMs, mTransitionDragLength);
+                    endShift = overshoot.end;
+                    interpolator = overshoot.interpolator;
+                    duration = Utilities.boundToRange(overshoot.duration, MIN_OVERSHOOT_DURATION,
+                            MAX_SWIPE_DURATION);
+                } else {
+                    float distanceToTravel = (endShift - currentShift) * mTransitionDragLength;
+
+                    // we want the page's snap velocity to approximately match the velocity at
+                    // which the user flings, so we scale the duration by a value near to the
+                    // derivative of the scroll interpolator at zero, ie. 2.
+                    long baseDuration = Math.round(Math.abs(distanceToTravel / velocityPxPerMs));
+                    duration = Math.min(MAX_SWIPE_DURATION, 2 * baseDuration);
+                }
             }
-            startShift = Utilities.boundToRange(mCurrentShift.value - velocityPxPerMs
-                    * SINGLE_FRAME_MS / (mTransitionDragLength), 0, 1);
         }
-        animateToProgress(startShift, endShift, duration, interpolator);
+        animateToProgress(startShift, endShift, duration, interpolator, goingToHome);
     }
 
     private void doLogGesture(boolean toLauncher) {
@@ -754,14 +767,14 @@ public class WindowTransformSwipeHandler<T extends BaseDraggingActivity> {
 
     /** Animates to the given progress, where 0 is the current app and 1 is overview. */
     private void animateToProgress(float start, float end, long duration,
-            Interpolator interpolator) {
+            Interpolator interpolator, boolean goingToHome) {
         mRecentsAnimationWrapper.runOnInit(() -> animateToProgressInternal(start, end, duration,
-                interpolator));
+                interpolator, goingToHome));
     }
 
     private void animateToProgressInternal(float start, float end, long duration,
-            Interpolator interpolator) {
-        mIsGoingToHome = Float.compare(end, 1) == 0;
+            Interpolator interpolator, boolean goingToHome) {
+        mIsGoingToHome = goingToHome;
         ObjectAnimator anim = mCurrentShift.animateToValue(start, end).setDuration(duration);
         anim.setInterpolator(interpolator);
         anim.addListener(new AnimationSuccessListener() {
@@ -869,8 +882,21 @@ public class WindowTransformSwipeHandler<T extends BaseDraggingActivity> {
                 // new thumbnail
                 finishTransitionPosted = new WindowCallbacksCompat(taskView) {
 
+                    // The number of frames to defer until we actually finish the animation
+                    private int mDeferFrameCount = 2;
+
                     @Override
                     public void onPostDraw(Canvas canvas) {
+                        if (mDeferFrameCount > 0) {
+                            mDeferFrameCount--;
+                            // Workaround, detach and reattach to invalidate the root node for
+                            // another draw
+                            detach();
+                            attach();
+                            taskView.invalidate();
+                            return;
+                        }
+
                         setStateOnUiThread(STATE_SCREENSHOT_CAPTURED);
                         detach();
                     }
diff --git a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java
index 9e2de33954..261f45dc24 100644
--- a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java
+++ b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsView.java
@@ -39,7 +39,7 @@ public class FallbackRecentsView extends RecentsView<RecentsActivity> {
     }
 
     @Override
-    protected void onAllTasksRemoved() {
+    protected void startHome() {
         mActivity.startHome();
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
index 5aca4f3263..7c5828b440 100644
--- a/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -79,7 +79,7 @@ public class LauncherRecentsView extends RecentsView<Launcher> {
     }
 
     @Override
-    protected void onAllTasksRemoved() {
+    protected void startHome() {
         mActivity.getStateManager().goToState(NORMAL);
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 92852d2cbf..e18708b193 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -55,6 +55,7 @@ import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.view.ViewDebug;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.accessibility.AccessibilityNodeInfo;
@@ -127,6 +128,8 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
     private final RecentsModel mModel;
     private final int mTaskTopMargin;
     private final ClearAllButton mClearAllButton;
+    private final Rect mClearAllButtonDeadZoneRect = new Rect();
+    private final Rect mTaskViewDeadZoneRect = new Rect();
 
     private final ScrollState mScrollState = new ScrollState();
     // Keeps track of the previously known visible tasks for purposes of loading/unloading task data
@@ -230,6 +233,10 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
     private boolean mHandleTaskStackChanges;
     private Runnable mNextPageSwitchRunnable;
     private boolean mSwipeDownShouldLaunchApp;
+    private boolean mTouchDownToStartHome;
+    private final int mTouchSlop;
+    private int mDownX;
+    private int mDownY;
 
     private PendingAnimation mPendingAnimation;
 
@@ -275,6 +282,7 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
         setLayoutDirection(mIsRtl ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR);
         mTaskTopMargin = getResources()
                 .getDimensionPixelSize(R.dimen.task_thumbnail_top_margin);
+        mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
 
         mEmptyIcon = context.getDrawable(R.drawable.ic_empty_recents);
         mEmptyIcon.setCallback(this);
@@ -378,9 +386,45 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         super.onTouchEvent(ev);
-        if (ev.getAction() == MotionEvent.ACTION_UP && mShowEmptyMessage) {
-            onAllTasksRemoved();
+        final int x = (int) ev.getX();
+        final int y = (int) ev.getY();
+        switch (ev.getAction()) {
+            case MotionEvent.ACTION_UP:
+                if (mShowEmptyMessage) {
+                    onAllTasksRemoved();
+                }
+                if (mTouchDownToStartHome) {
+                    startHome();
+                }
+                mTouchDownToStartHome = false;
+                break;
+            case MotionEvent.ACTION_CANCEL:
+                mTouchDownToStartHome = false;
+                break;
+            case MotionEvent.ACTION_MOVE:
+                // Passing the touch slop will not allow dismiss to home
+                if (mTouchDownToStartHome && Math.hypot(mDownX - x, mDownY - y) > mTouchSlop) {
+                    mTouchDownToStartHome = false;
+                }
+                break;
+            case MotionEvent.ACTION_DOWN:
+                // Touch down anywhere but the deadzone around the visible clear all button and
+                // between the task views will start home on touch up
+                if (mTouchState == TOUCH_STATE_REST) {
+                    updateDeadZoneRects();
+                    final boolean clearAllButtonDeadZoneConsumed = mClearAllButton.getAlpha() == 1
+                            && mClearAllButtonDeadZoneRect.contains(x, y);
+                    if (!clearAllButtonDeadZoneConsumed
+                            && !mTaskViewDeadZoneRect.contains(x + getScrollX(), y)) {
+                        mTouchDownToStartHome = true;
+                    }
+                }
+                mDownX = x;
+                mDownY = y;
+                break;
         }
+
+
         // Do not let touch escape to siblings below this view.
         return true;
     }
@@ -599,7 +643,11 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
         mHasVisibleTaskData.clear();
     }
 
-    protected abstract void onAllTasksRemoved();
+    protected void onAllTasksRemoved() {
+        startHome();
+    }
+
+    protected abstract void startHome();
 
     public void reset() {
         mRunningTaskId = -1;
@@ -1058,6 +1106,27 @@ public abstract class RecentsView<T extends BaseActivity> extends PagedView impl
                 + (getWidth() - mInsets.right - getPaddingRight())) / 2);
     }
 
+    private void updateDeadZoneRects() {
+        // Get the deadzone rect surrounding the clear all button to not dismiss overview to home
+        mClearAllButtonDeadZoneRect.setEmpty();
+        if (mClearAllButton.getWidth() > 0) {
+            int verticalMargin = getResources()
+                    .getDimensionPixelSize(R.dimen.recents_clear_all_deadzone_vertical_margin);
+            mClearAllButton.getHitRect(mClearAllButtonDeadZoneRect);
+            mClearAllButtonDeadZoneRect.inset(-getPaddingRight() / 2, -verticalMargin);
+        }
+
+        // Get the deadzone rect between the task views
+        mTaskViewDeadZoneRect.setEmpty();
+        int count = getTaskViewCount();
+        if (count > 0) {
+            final View taskView = getTaskViewAt(0);
+            getTaskViewAt(count - 1).getHitRect(mTaskViewDeadZoneRect);
+            mTaskViewDeadZoneRect.union(taskView.getLeft(), taskView.getTop(), taskView.getRight(),
+                    taskView.getBottom());
+        }
+    }
+
     private void updateEmptyStateUi(boolean sizeChanged) {
         boolean hasValidSize = getWidth() > 0 && getHeight() > 0;
         if (sizeChanged && hasValidSize) {
diff --git a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
index 07f22aada4..fb653cfacd 100644
--- a/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
+++ b/quickstep/src/com/android/quickstep/views/TaskThumbnailView.java
@@ -161,6 +161,10 @@ public class TaskThumbnailView extends View {
         updateThumbnailPaintFilter();
     }
 
+    public float getDimAlpha() {
+        return mDimAlpha;
+    }
+
     public Rect getInsets() {
         if (mThumbnailData != null) {
             return mThumbnailData.insets;
diff --git a/src/com/android/launcher3/IconCache.java b/src/com/android/launcher3/IconCache.java
index 9dc3129fd8..c5ca183f7d 100644
--- a/src/com/android/launcher3/IconCache.java
+++ b/src/com/android/launcher3/IconCache.java
@@ -801,7 +801,7 @@ public class IconCache {
     }
 
     private static final class IconDB extends SQLiteCacheHelper {
-        private final static int RELEASE_VERSION = 23;
+        private final static int RELEASE_VERSION = 24;
 
         private final static String TABLE_NAME = "icons";
         private final static String COLUMN_ROWID = "rowid";
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 3a8679e21b..c3c4f5e5ed 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -741,6 +741,8 @@ public class Launcher extends BaseDraggingActivity implements LauncherExterns,
         NotificationListener.removeNotificationsChangedListener();
         getStateManager().moveToRestState();
 
+        UiFactory.onLauncherStateOrResumeChanged(this);
+
         // Workaround for b/78520668, explicitly trim memory once UI is hidden
         onTrimMemory(TRIM_MEMORY_UI_HIDDEN);
     }
diff --git a/src/com/android/launcher3/anim/Interpolators.java b/src/com/android/launcher3/anim/Interpolators.java
index 8a1abf412d..675e26de05 100644
--- a/src/com/android/launcher3/anim/Interpolators.java
+++ b/src/com/android/launcher3/anim/Interpolators.java
@@ -16,7 +16,10 @@
 
 package com.android.launcher3.anim;
 
+import static com.android.launcher3.Utilities.SINGLE_FRAME_MS;
+
 import android.graphics.Path;
+import android.view.animation.AccelerateDecelerateInterpolator;
 import android.view.animation.AccelerateInterpolator;
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.Interpolator;
@@ -45,6 +48,8 @@ public class Interpolators {
     public static final Interpolator DEACCEL_2_5 = new DecelerateInterpolator(2.5f);
     public static final Interpolator DEACCEL_3 = new DecelerateInterpolator(3f);
 
+    public static final Interpolator ACCEL_DEACCEL = new AccelerateDecelerateInterpolator();
+
     public static final Interpolator FAST_OUT_SLOW_IN = new PathInterpolator(0.4f, 0f, 0.2f, 1f);
 
     public static final Interpolator AGGRESSIVE_EASE = new PathInterpolator(0.2f, 0f, 0f, 1f);
@@ -52,6 +57,9 @@ public class Interpolators {
 
     public static final Interpolator EXAGGERATED_EASE;
 
+    private static final int MIN_SETTLE_DURATION = 200;
+    private static final float OVERSHOOT_FACTOR = 0.9f;
+
     static {
         Path exaggeratedEase = new Path();
         exaggeratedEase.moveTo(0, 0);
@@ -112,46 +120,18 @@ public class Interpolators {
         }
     };
 
-    /**
-     * Interpolates using a particular section of the damped oscillation function.
-     * The section is selected by scaling and shifting the function.
-     */
-    public static final Interpolator OSCILLATE = new Interpolator() {
-
-        // Used to scale the oscillations horizontally
-        private final float horizontalScale = 1f;
-        // Used to shift the oscillations horizontally
-        private final float horizontalShift = 0.5f;
-        // Used to scale the oscillations vertically
-        private final float verticalScale = 1f;
-        // Used to shift the oscillations vertically
-        private final float verticalShift = 1f;
-
-        @Override
-        public float getInterpolation(float t) {
-            t = horizontalScale * (t + horizontalShift);
-            return (float) ((verticalScale * (Math.exp(-t) * Math.cos(2 * Math.PI * t)))
-                    + verticalShift);
-        }
-    };
-
     private static final float FAST_FLING_PX_MS = 10;
 
     public static Interpolator scrollInterpolatorForVelocity(float velocity) {
         return Math.abs(velocity) > FAST_FLING_PX_MS ? SCROLL : SCROLL_CUBIC;
     }
 
-    public static Interpolator overshootInterpolatorForVelocity(float velocity) {
-        return overshootInterpolatorForVelocity(velocity, 1f);
-    }
-
     /**
      * Create an OvershootInterpolator with tension directly related to the velocity (in px/ms).
      * @param velocity The start velocity of the animation we want to overshoot.
-     * @param dampFactor An optional factor to reduce the amount of tension (how far we overshoot).
      */
-    public static Interpolator overshootInterpolatorForVelocity(float velocity, float dampFactor) {
-        return new OvershootInterpolator(Math.min(Math.abs(velocity), 3f) / dampFactor);
+    public static Interpolator overshootInterpolatorForVelocity(float velocity) {
+        return new OvershootInterpolator(Math.min(Math.abs(velocity), 3f));
     }
 
     /**
@@ -183,4 +163,75 @@ public class Interpolators {
             float upperBound) {
         return t -> Utilities.mapRange(interpolator.getInterpolation(t), lowerBound, upperBound);
     }
-}
\ No newline at end of file
+
+    /**
+     * Computes parameters necessary for an overshoot effect.
+     */
+    public static class OvershootParams {
+        public Interpolator interpolator;
+        public float start;
+        public float end;
+        public long duration;
+
+        /**
+         * Given the input params, sets OvershootParams variables to be used by the caller.
+         * @param startProgress The progress from 0 to 1 that the overshoot starts from.
+         * @param overshootPastProgress The progress from 0 to 1 where we overshoot past (should
+         *        either be equal to startProgress or endProgress, depending on if we want to
+         *        overshoot immediately or only once we reach the end).
+         * @param endProgress The final progress from 0 to 1 that we will settle to.
+         * @param velocityPxPerMs The initial velocity that causes this overshoot.
+         * @param totalDistancePx The distance against which progress is calculated.
+         */
+        public OvershootParams(float startProgress, float overshootPastProgress,
+                float endProgress, float velocityPxPerMs, int totalDistancePx) {
+            velocityPxPerMs = Math.abs(velocityPxPerMs);
+            start = startProgress;
+            int startPx = (int) (start * totalDistancePx);
+            // Overshoot by about half a frame.
+            float overshootBy = OVERSHOOT_FACTOR * velocityPxPerMs *
+                    SINGLE_FRAME_MS / totalDistancePx / 2;
+            overshootBy = Utilities.boundToRange(overshootBy, 0.02f, 0.15f);
+            end = overshootPastProgress + overshootBy;
+            int endPx = (int) (end  * totalDistancePx);
+            int overshootDistance = endPx - startPx;
+            // Calculate deceleration necessary to reach overshoot distance.
+            // Formula: velocityFinal^2 = velocityInitial^2 + 2 * acceleration * distance
+            //          0 = v^2 + 2ad (velocityFinal == 0)
+            //          a = v^2 / -2d
+            float decelerationPxPerMs = velocityPxPerMs * velocityPxPerMs / (2 * overshootDistance);
+            // Calculate time necessary to reach peak of overshoot.
+            // Formula: acceleration = velocity / time
+            //          time = velocity / acceleration
+            duration = (long) (velocityPxPerMs / decelerationPxPerMs);
+
+            // Now that we're at the top of the overshoot, need to settle back to endProgress.
+            float settleDistance = end - endProgress;
+            int settleDistancePx = (int) (settleDistance * totalDistancePx);
+            // Calculate time necessary for the settle.
+            // Formula: distance = velocityInitial * time + 1/2 * acceleration * time^2
+            //          d = 1/2at^2 (velocityInitial = 0, since we just stopped at the top)
+            //          t = sqrt(2d/a)
+            // Above formula assumes constant acceleration. Since we use ACCEL_DEACCEL, we actually
+            // have acceleration to halfway then deceleration the rest. So the formula becomes:
+            //          t = sqrt(d/a) * 2 (half the distance for accel, half for deaccel)
+            long settleDuration = (long) Math.sqrt(settleDistancePx / decelerationPxPerMs) * 4;
+
+            settleDuration = Math.max(MIN_SETTLE_DURATION, settleDuration);
+            // How much of the animation to devote to playing the overshoot (the rest is for settle).
+            float overshootFraction = (float) duration / (duration + settleDuration);
+            duration += settleDuration;
+            // Finally, create the interpolator, composed of two interpolators: an overshoot, which
+            // reaches end > 1, and then a settle to endProgress.
+            Interpolator overshoot = Interpolators.clampToProgress(DEACCEL, 0, overshootFraction);
+            // The settle starts at 1, where 1 is the top of the overshoot, and maps to a fraction
+            // such that final progress is endProgress. For example, if we overshot to 1.1 but want
+            // to end at 1, we need to map to 1/1.1.
+            Interpolator settle = Interpolators.clampToProgress(Interpolators.mapToProgress(
+                    ACCEL_DEACCEL, 1, (endProgress - start) / (end - start)), overshootFraction, 1);
+            interpolator = t -> t <= overshootFraction
+                    ? overshoot.getInterpolation(t)
+                    : settle.getInterpolation(t);
+        }
+    }
+}
diff --git a/src/com/android/launcher3/graphics/LauncherIcons.java b/src/com/android/launcher3/graphics/LauncherIcons.java
index 09ea1ad41a..333fe5907c 100644
--- a/src/com/android/launcher3/graphics/LauncherIcons.java
+++ b/src/com/android/launcher3/graphics/LauncherIcons.java
@@ -340,7 +340,7 @@ public class LauncherIcons implements AutoCloseable {
         if (Utilities.ATLEAST_OREO && icon instanceof AdaptiveIconDrawable) {
             int offset = Math.max((int) Math.ceil(BLUR_FACTOR * textureWidth), Math.max(left, top));
             int size = Math.max(width, height);
-            icon.setBounds(offset, offset, offset + size, offset + size);
+            icon.setBounds(offset, offset, size - offset, size - offset);
         } else {
             icon.setBounds(left, top, left+width, top+height);
         }