Merge changes I9749124a,Ic59b877c,Ibe8734e8 into sc-dev am: 1282050f2f am: 878a005d07

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/14448428

Change-Id: Ifb451869fbc58b339aab1385156feafbe7085096

quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java

@@ -19,6 +19,7 @@ import static com.android.launcher3.AbstractFloatingView.TYPE_ALL;
 import static com.android.launcher3.AbstractFloatingView.TYPE_HIDE_BACK_BUTTON;
 import static com.android.launcher3.LauncherState.FLAG_HIDE_BACK_BUTTON;
 import static com.android.launcher3.LauncherState.NORMAL;
+import static com.android.launcher3.LauncherState.NO_OFFSET;
 import static com.android.launcher3.util.DisplayController.CHANGE_ACTIVE_SCREEN;
 import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
 import static com.android.quickstep.SysUINavigationMode.Mode.TWO_BUTTONS;
@@ -343,7 +344,7 @@ public abstract class BaseQuickstepLauncher extends Launcher
     @Override
     public float[] getNormalOverviewScaleAndOffset() {
         return SysUINavigationMode.getMode(this).hasGestures
-                ? new float[] {1, 1} : new float[] {1.1f, 0};
+                ? new float[] {1, NO_OFFSET, 1} : new float[] {1.1f, NO_OFFSET, NO_OFFSET};
     }
 
     @Override

quickstep/src/com/android/launcher3/uioverrides/BaseRecentsViewStateController.java

@@ -22,8 +22,10 @@ import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_FA
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_MODAL;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_SCALE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_X;
+import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_Y;
 import static com.android.launcher3.states.StateAnimationConfig.SKIP_OVERVIEW;
-import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_HORIZONTAL_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_VERTICAL_OFFSET;
 import static com.android.quickstep.views.RecentsView.RECENTS_GRID_PROGRESS;
 import static com.android.quickstep.views.RecentsView.RECENTS_SCALE_PROPERTY;
 import static com.android.quickstep.views.RecentsView.TASK_PRIMARY_SPLIT_TRANSLATION;
@@ -62,7 +64,8 @@ public abstract class BaseRecentsViewStateController<T extends RecentsView>
     public void setState(@NonNull LauncherState state) {
         float[] scaleAndOffset = state.getOverviewScaleAndOffset(mLauncher);
         RECENTS_SCALE_PROPERTY.set(mRecentsView, scaleAndOffset[0]);
-        ADJACENT_PAGE_OFFSET.set(mRecentsView, scaleAndOffset[1]);
+        ADJACENT_PAGE_HORIZONTAL_OFFSET.set(mRecentsView, scaleAndOffset[1]);
+        ADJACENT_PAGE_VERTICAL_OFFSET.set(mRecentsView, scaleAndOffset[2]);
         TASK_SECONDARY_TRANSLATION.set(mRecentsView, 0f);
 
         getContentAlphaProperty().set(mRecentsView, state.overviewUi ? 1f : 0);
@@ -92,8 +95,10 @@ public abstract class BaseRecentsViewStateController<T extends RecentsView>
         float[] scaleAndOffset = toState.getOverviewScaleAndOffset(mLauncher);
         setter.setFloat(mRecentsView, RECENTS_SCALE_PROPERTY, scaleAndOffset[0],
                 config.getInterpolator(ANIM_OVERVIEW_SCALE, LINEAR));
-        setter.setFloat(mRecentsView, ADJACENT_PAGE_OFFSET, scaleAndOffset[1],
+        setter.setFloat(mRecentsView, ADJACENT_PAGE_HORIZONTAL_OFFSET, scaleAndOffset[1],
                 config.getInterpolator(ANIM_OVERVIEW_TRANSLATE_X, LINEAR));
+        setter.setFloat(mRecentsView, ADJACENT_PAGE_VERTICAL_OFFSET, scaleAndOffset[2],
+                config.getInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, LINEAR));
         PagedOrientationHandler orientationHandler =
                 ((RecentsView) mLauncher.getOverviewPanel()).getPagedOrientationHandler();
         FloatProperty taskViewsFloat = orientationHandler.getSplitSelectTaskOffset(

quickstep/src/com/android/launcher3/uioverrides/states/AllAppsState.java

@@ -83,11 +83,6 @@ public class AllAppsState extends LauncherState {
         return ALL_APPS_CONTENT;
     }
 
-    @Override
-    public float[] getOverviewScaleAndOffset(Launcher launcher) {
-        return new float[] {0.9f, 1};
-    }
-
     @Override
     public LauncherState getHistoryForState(LauncherState previousState) {
         return previousState == OVERVIEW ? OVERVIEW : NORMAL;

quickstep/src/com/android/launcher3/uioverrides/states/BackgroundAppState.java

@@ -96,6 +96,6 @@ public class BackgroundAppState extends OverviewState {
             BaseDraggingActivity activity) {
         return new float[] {
                 ((RecentsView) activity.getOverviewPanel()).getMaxScaleForFullScreen(),
-                NO_OFFSET};
+                NO_OFFSET, NO_OFFSET};
     }
 }

quickstep/src/com/android/launcher3/uioverrides/states/OverviewModalTaskState.java

@@ -78,6 +78,6 @@ public class OverviewModalTaskState extends OverviewState {
         float scale = Math.min((float) modalTaskSize.height() / taskSize.y,
                 (float) modalTaskSize.width() / taskSize.x);
 
-        return new float[] {scale, NO_OFFSET};
+        return new float[] {scale, NO_OFFSET, NO_OFFSET};
     }
 }

quickstep/src/com/android/launcher3/uioverrides/states/OverviewState.java

@@ -17,7 +17,6 @@ package com.android.launcher3.uioverrides.states;
 
 import static com.android.launcher3.anim.Interpolators.DEACCEL_2;
 import static com.android.launcher3.logging.StatsLogManager.LAUNCHER_STATE_OVERVIEW;
-import static com.android.quickstep.SysUINavigationMode.Mode.NO_BUTTON;
 
 import android.content.Context;
 import android.graphics.Rect;
@@ -60,9 +59,8 @@ public class OverviewState extends LauncherState {
 
     @Override
     public int getTransitionDuration(Context context) {
-        // In no-button mode, overview comes in all the way from the left, so give it more time.
+        // In gesture modes, overview comes in all the way from the bottom, so give it more time.
-        boolean isNoButtonMode = SysUINavigationMode.INSTANCE.get(context).getMode() == NO_BUTTON;
+        return SysUINavigationMode.INSTANCE.get(context).getMode().hasGestures ? 380 : 250;
-        return isNoButtonMode ? 380 : 250;
     }
 
     @Override
@@ -80,7 +78,7 @@ public class OverviewState extends LauncherState {
 
     @Override
     public float[] getOverviewScaleAndOffset(Launcher launcher) {
-        return new float[] {NO_SCALE, NO_OFFSET};
+        return new float[] {NO_SCALE, NO_OFFSET, NO_OFFSET};
     }
 
     @Override

quickstep/src/com/android/launcher3/uioverrides/states/QuickstepAtomicAnimationFactory.java

@@ -23,34 +23,34 @@ import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.WorkspaceStateTransitionAnimation.getSpringScaleAnimator;
 import static com.android.launcher3.anim.Interpolators.ACCEL;
-import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
+import static com.android.launcher3.anim.Interpolators.AGGRESSIVE_EASE_IN_OUT;
 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.DEACCEL_3;
 import static com.android.launcher3.anim.Interpolators.FINAL_FRAME;
 import static com.android.launcher3.anim.Interpolators.INSTANT;
+import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.anim.Interpolators.OVERSHOOT_1_2;
 import static com.android.launcher3.anim.Interpolators.clampToProgress;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_ALL_APPS_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_DEPTH;
+import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_ACTIONS_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_SCALE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_X;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_Y;
+import static com.android.launcher3.states.StateAnimationConfig.ANIM_SCRIM_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_WORKSPACE_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_WORKSPACE_SCALE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_WORKSPACE_TRANSLATE;
-import static com.android.quickstep.SysUINavigationMode.Mode.NO_BUTTON;
 import static com.android.quickstep.views.RecentsView.RECENTS_SCALE_PROPERTY;
 
 import android.animation.ValueAnimator;
-import android.view.View;
 
 import com.android.launcher3.CellLayout;
 import com.android.launcher3.Hotseat;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.Workspace;
-import com.android.launcher3.allapps.AllAppsContainerView;
 import com.android.launcher3.states.StateAnimationConfig;
 import com.android.launcher3.uioverrides.QuickstepLauncher;
 import com.android.quickstep.SysUINavigationMode;
@@ -65,6 +65,12 @@ public class QuickstepAtomicAnimationFactory extends
 
     // Scale recents takes before animating in
     private static final float RECENTS_PREPARE_SCALE = 1.33f;
+    // Scale workspace takes before animating in
+    private static final float WORKSPACE_PREPARE_SCALE_GESTURES = 0.97f;
+    private static final float WORKSPACE_PREPARE_SCALE_BUTTONS = 0.92f;
+    // When the overview to home transition reaches this percentage, immediately hide overview and
+    // start animating away the scrim and animating in workspace.
+    private static final float OVERVIEW_TO_HOME_HARD_HAND_OFF = 0.4f;
 
     // Due to use of physics, duration may differ between devices so we need to calculate and
     // cache the value.
@@ -79,21 +85,31 @@ public class QuickstepAtomicAnimationFactory extends
             StateAnimationConfig config) {
         RecentsView overview = mActivity.getOverviewPanel();
         if (toState == NORMAL && fromState == OVERVIEW) {
-            config.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL);
+            final float workspacePrepareScale;
-            config.setInterpolator(ANIM_WORKSPACE_FADE, ACCEL);
+            if (SysUINavigationMode.getMode(mActivity).hasGestures
-            config.setInterpolator(ANIM_ALL_APPS_FADE, ACCEL);
+                    && overview.getTaskViewCount() > 0) {
-            config.setInterpolator(ANIM_OVERVIEW_SCALE, clampToProgress(ACCEL, 0, 0.9f));
+                workspacePrepareScale = WORKSPACE_PREPARE_SCALE_GESTURES;
-            config.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, ACCEL_DEACCEL);
+                // Overview is going offscreen, so keep it at its current scale and opacity.
-
+                config.setInterpolator(ANIM_OVERVIEW_SCALE, FINAL_FRAME);
-            if (SysUINavigationMode.getMode(mActivity) == NO_BUTTON) {
+                config.setInterpolator(ANIM_OVERVIEW_FADE, clampToProgress(
-                // Scrolling in tasks, so make visible straight away
+                        FINAL_FRAME, 0f, OVERVIEW_TO_HOME_HARD_HAND_OFF));
-                if (overview.getTaskViewCount() > 0) {
+                config.setInterpolator(ANIM_OVERVIEW_ACTIONS_FADE, clampToProgress(
-                    config.setInterpolator(ANIM_OVERVIEW_FADE, FINAL_FRAME);
+                        DEACCEL, 0f, OVERVIEW_TO_HOME_HARD_HAND_OFF));
-                } else {
+                config.setInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, AGGRESSIVE_EASE_IN_OUT);
-                    config.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL_1_7);
+                config.setInterpolator(ANIM_SCRIM_FADE, clampToProgress(
-                }
+                        DEACCEL, OVERVIEW_TO_HOME_HARD_HAND_OFF, 1f));
+                config.setInterpolator(ANIM_WORKSPACE_SCALE, clampToProgress(
+                        DEACCEL, OVERVIEW_TO_HOME_HARD_HAND_OFF, 1f));
+                config.setInterpolator(ANIM_WORKSPACE_FADE, clampToProgress(
+                        INSTANT, OVERVIEW_TO_HOME_HARD_HAND_OFF, 1f));
             } else {
+                workspacePrepareScale = WORKSPACE_PREPARE_SCALE_BUTTONS;
+                config.setInterpolator(ANIM_OVERVIEW_SCALE, clampToProgress(ACCEL, 0, 0.9f));
                 config.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL_1_7);
+                config.setInterpolator(ANIM_OVERVIEW_ACTIONS_FADE, LINEAR);
+                config.setInterpolator(ANIM_SCRIM_FADE, LINEAR);
+                config.setInterpolator(ANIM_WORKSPACE_SCALE, DEACCEL);
+                config.setInterpolator(ANIM_WORKSPACE_FADE, ACCEL);
             }
 
             Workspace workspace = mActivity.getWorkspace();
@@ -106,25 +122,18 @@ public class QuickstepAtomicAnimationFactory extends
                         && currentChild.getShortcutsAndWidgets().getAlpha() > 0;
             }
             if (!isWorkspaceVisible) {
-                workspace.setScaleX(0.92f);
+                workspace.setScaleX(workspacePrepareScale);
-                workspace.setScaleY(0.92f);
+                workspace.setScaleY(workspacePrepareScale);
             }
             Hotseat hotseat = mActivity.getHotseat();
             boolean isHotseatVisible = hotseat.getVisibility() == VISIBLE && hotseat.getAlpha() > 0;
             if (!isHotseatVisible) {
-                hotseat.setScaleX(0.92f);
+                hotseat.setScaleX(workspacePrepareScale);
-                hotseat.setScaleY(0.92f);
+                hotseat.setScaleY(workspacePrepareScale);
-                AllAppsContainerView qsbContainer = mActivity.getAppsView();
-                View qsb = qsbContainer.getSearchView();
-                boolean qsbVisible = qsb.getVisibility() == VISIBLE && qsb.getAlpha() > 0;
-                if (!qsbVisible) {
-                    qsbContainer.setScaleX(0.92f);
-                    qsbContainer.setScaleY(0.92f);
-                }
             }
         } else if ((fromState == NORMAL || fromState == HINT_STATE
                 || fromState == HINT_STATE_TWO_BUTTON) && toState == OVERVIEW) {
-            if (SysUINavigationMode.getMode(mActivity) == NO_BUTTON) {
+            if (SysUINavigationMode.getMode(mActivity).hasGestures) {
                 config.setInterpolator(ANIM_WORKSPACE_SCALE,
                         fromState == NORMAL ? ACCEL : OVERSHOOT_1_2);
                 config.setInterpolator(ANIM_WORKSPACE_TRANSLATE, ACCEL);
@@ -148,6 +157,10 @@ public class QuickstepAtomicAnimationFactory extends
             config.setInterpolator(ANIM_ALL_APPS_FADE, OVERSHOOT_1_2);
             config.setInterpolator(ANIM_OVERVIEW_SCALE, OVERSHOOT_1_2);
             config.setInterpolator(ANIM_DEPTH, OVERSHOOT_1_2);
+            config.setInterpolator(ANIM_SCRIM_FADE, t -> {
+                // Animate at the same rate until reaching progress 1, and skip the overshoot.
+                return Math.min(1, OVERSHOOT_1_2.getInterpolation(t));
+            });
             config.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, OVERSHOOT_1_2);
             config.setInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, OVERSHOOT_1_2);
         } else if (fromState == HINT_STATE && toState == NORMAL) {

quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/NoButtonQuickSwitchTouchController.java

@@ -41,7 +41,8 @@ import static com.android.launcher3.touch.BothAxesSwipeDetector.DIRECTION_RIGHT;
 import static com.android.launcher3.touch.BothAxesSwipeDetector.DIRECTION_UP;
 import static com.android.launcher3.util.DisplayController.getSingleFrameMs;
 import static com.android.launcher3.util.VibratorWrapper.OVERVIEW_HAPTIC;
-import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_HORIZONTAL_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_VERTICAL_OFFSET;
 import static com.android.quickstep.views.RecentsView.CONTENT_ALPHA;
 import static com.android.quickstep.views.RecentsView.FULLSCREEN_PROGRESS;
 import static com.android.quickstep.views.RecentsView.RECENTS_SCALE_PROPERTY;
@@ -221,7 +222,8 @@ public class NoButtonQuickSwitchTouchController implements TouchController,
 
         // Set RecentView's initial properties.
         RECENTS_SCALE_PROPERTY.set(mRecentsView, fromState.getOverviewScaleAndOffset(mLauncher)[0]);
-        ADJACENT_PAGE_OFFSET.set(mRecentsView, 1f);
+        ADJACENT_PAGE_HORIZONTAL_OFFSET.set(mRecentsView, 1f);
+        ADJACENT_PAGE_VERTICAL_OFFSET.set(mRecentsView, 0f);
         mRecentsView.setContentAlpha(1);
         mRecentsView.setFullscreenProgress(fromState.getOverviewFullscreenProgress());
         mLauncher.getActionsView().getVisibilityAlpha().setValue(
@@ -233,7 +235,7 @@ public class NoButtonQuickSwitchTouchController implements TouchController,
         //   - OverviewScrim
         //   - RecentsView fade (if it's empty)
         PendingAnimation xAnim = new PendingAnimation((long) (mXRange * 2));
-        xAnim.setFloat(mRecentsView, ADJACENT_PAGE_OFFSET, scaleAndOffset[1], LINEAR);
+        xAnim.setFloat(mRecentsView, ADJACENT_PAGE_HORIZONTAL_OFFSET, scaleAndOffset[1], LINEAR);
         xAnim.setViewBackgroundColor(mLauncher.getScrimView(),
                 toState.getWorkspaceScrimColor(mLauncher), LINEAR);
         if (mRecentsView.getTaskViewCount() == 0) {

quickstep/src/com/android/launcher3/uioverrides/touchcontrollers/QuickSwitchTouchController.java

@@ -30,6 +30,9 @@ import static com.android.launcher3.states.StateAnimationConfig.ANIM_VERTICAL_PR
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_WORKSPACE_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_WORKSPACE_TRANSLATE;
 import static com.android.launcher3.util.SystemUiController.UI_STATE_FULLSCREEN_TASK;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_HORIZONTAL_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_VERTICAL_OFFSET;
+import static com.android.quickstep.views.RecentsView.RECENTS_SCALE_PROPERTY;
 import static com.android.quickstep.views.RecentsView.UPDATE_SYSUI_FLAGS_THRESHOLD;
 import static com.android.systemui.shared.system.ActivityManagerWrapper.CLOSE_SYSTEM_WINDOWS_REASON_RECENTS;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
@@ -105,6 +108,14 @@ public class QuickSwitchTouchController extends AbstractStateChangeTouchControll
         StateAnimationConfig config = new StateAnimationConfig();
         setupInterpolators(config);
         config.duration = (long) (getShiftRange() * 2);
+
+        // Set RecentView's initial properties for coming in from the side.
+        RECENTS_SCALE_PROPERTY.set(mOverviewPanel,
+                QUICK_SWITCH.getOverviewScaleAndOffset(mLauncher)[0] * 0.85f);
+        ADJACENT_PAGE_HORIZONTAL_OFFSET.set(mOverviewPanel, 1f);
+        ADJACENT_PAGE_VERTICAL_OFFSET.set(mOverviewPanel, 0f);
+        mOverviewPanel.setContentAlpha(1);
+
         mCurrentAnimation = mLauncher.getStateManager()
                 .createAnimationToNewWorkspace(mToState, config);
         mCurrentAnimation.getTarget().addListener(mClearStateOnCancelListener);

quickstep/src/com/android/quickstep/BaseActivityInterface.java

@@ -23,8 +23,8 @@ import static com.android.quickstep.AbsSwipeUpHandler.RECENTS_ATTACH_DURATION;
 import static com.android.quickstep.GestureState.GestureEndTarget.RECENTS;
 import static com.android.quickstep.SysUINavigationMode.getMode;
 import static com.android.quickstep.util.RecentsAtomicAnimationFactory.INDEX_RECENTS_FADE_ANIM;
-import static com.android.quickstep.util.RecentsAtomicAnimationFactory.INDEX_RECENTS_TRANSLATE_X_ANIM;
+import static com.android.quickstep.util.RecentsAtomicAnimationFactory.INDEX_RECENTS_TRANSLATE_Y_ANIM;
-import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_VERTICAL_OFFSET;
 import static com.android.quickstep.views.RecentsView.FULLSCREEN_PROGRESS;
 import static com.android.quickstep.views.RecentsView.RECENTS_SCALE_PROPERTY;
 import static com.android.quickstep.views.RecentsView.TASK_SECONDARY_TRANSLATION;
@@ -469,17 +469,17 @@ public abstract class BaseActivityInterface<STATE_TYPE extends BaseState<STATE_T
             float fromTranslation = attached ? 1 : 0;
             float toTranslation = attached ? 0 : 1;
             mActivity.getStateManager()
-                    .cancelStateElementAnimation(INDEX_RECENTS_TRANSLATE_X_ANIM);
+                    .cancelStateElementAnimation(INDEX_RECENTS_TRANSLATE_Y_ANIM);
             if (!recentsView.isShown() && animate) {
-                ADJACENT_PAGE_OFFSET.set(recentsView, fromTranslation);
+                ADJACENT_PAGE_VERTICAL_OFFSET.set(recentsView, fromTranslation);
             } else {
-                fromTranslation = ADJACENT_PAGE_OFFSET.get(recentsView);
+                fromTranslation = ADJACENT_PAGE_VERTICAL_OFFSET.get(recentsView);
             }
             if (!animate) {
-                ADJACENT_PAGE_OFFSET.set(recentsView, toTranslation);
+                ADJACENT_PAGE_VERTICAL_OFFSET.set(recentsView, toTranslation);
             } else {
                 mActivity.getStateManager().createStateElementAnimation(
-                        INDEX_RECENTS_TRANSLATE_X_ANIM,
+                        INDEX_RECENTS_TRANSLATE_Y_ANIM,
                         fromTranslation, toTranslation).start();
             }
 

quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java

@@ -22,7 +22,8 @@ import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TR
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_Y;
 import static com.android.launcher3.states.StateAnimationConfig.ANIM_SCRIM_FADE;
 import static com.android.launcher3.states.StateAnimationConfig.SKIP_OVERVIEW;
-import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_HORIZONTAL_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_VERTICAL_OFFSET;
 import static com.android.quickstep.views.RecentsView.FULLSCREEN_PROGRESS;
 import static com.android.quickstep.views.RecentsView.RECENTS_GRID_PROGRESS;
 import static com.android.quickstep.views.RecentsView.RECENTS_SCALE_PROPERTY;
@@ -86,8 +87,10 @@ public class FallbackRecentsStateController implements StateHandler<RecentsState
         float[] scaleAndOffset = state.getOverviewScaleAndOffset(mActivity);
         setter.setFloat(mRecentsView, RECENTS_SCALE_PROPERTY, scaleAndOffset[0],
                 config.getInterpolator(ANIM_OVERVIEW_SCALE, LINEAR));
-        setter.setFloat(mRecentsView, ADJACENT_PAGE_OFFSET, scaleAndOffset[1],
+        setter.setFloat(mRecentsView, ADJACENT_PAGE_HORIZONTAL_OFFSET, scaleAndOffset[1],
                 config.getInterpolator(ANIM_OVERVIEW_TRANSLATE_X, LINEAR));
+        setter.setFloat(mRecentsView, ADJACENT_PAGE_VERTICAL_OFFSET, scaleAndOffset[2],
+                config.getInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, LINEAR));
         setter.setFloat(mRecentsView, TASK_SECONDARY_TRANSLATION, 0f,
                 config.getInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, LINEAR));
 

quickstep/src/com/android/quickstep/fallback/RecentsState.java

@@ -126,7 +126,7 @@ public class RecentsState implements BaseState<RecentsState> {
     }
 
     public float[] getOverviewScaleAndOffset(RecentsActivity activity) {
-        return new float[] { NO_SCALE, NO_OFFSET };
+        return new float[] { NO_SCALE, NO_OFFSET, NO_OFFSET };
     }
 
     /**
@@ -170,7 +170,7 @@ public class RecentsState implements BaseState<RecentsState> {
 
         @Override
         public float[] getOverviewScaleAndOffset(RecentsActivity activity) {
-            return new float[] { NO_SCALE, 1 };
+            return new float[] { NO_SCALE, NO_OFFSET, 1 };
         }
     }
 }

quickstep/src/com/android/quickstep/util/OverviewToHomeAnim.java

@@ -17,44 +17,26 @@ package com.android.quickstep.util;
 
 import static com.android.launcher3.LauncherState.NORMAL;
 import static com.android.launcher3.LauncherState.OVERVIEW;
-import static com.android.launcher3.anim.Interpolators.DEACCEL;
-import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
-import static com.android.launcher3.anim.Interpolators.FINAL_FRAME;
-import static com.android.launcher3.anim.Interpolators.LINEAR;
-import static com.android.launcher3.anim.Interpolators.clampToProgress;
-import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_ACTIONS_FADE;
-import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_FADE;
-import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_SCALE;
-import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_X;
-import static com.android.launcher3.states.StateAnimationConfig.ANIM_OVERVIEW_TRANSLATE_Y;
 
 import android.animation.Animator;
 import android.animation.AnimatorSet;
 import android.util.Log;
-import android.view.animation.Interpolator;
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.states.StateAnimationConfig;
-import com.android.quickstep.views.RecentsView;
 
 /**
  * Runs an animation from overview to home. Currently, this animation is just a wrapper around the
- * normal state transition, in order to keep RecentsView at the same scale and translationY that
+ * normal state transition and may play a {@link StaggeredWorkspaceAnim} if we're starting from an
- * it started out at as it translates offscreen. It also scrolls RecentsView to page 0 and may play
+ * upward fling.
- * a {@link StaggeredWorkspaceAnim} if we're starting from an upward fling.
  */
 public class OverviewToHomeAnim {
 
     private static final String TAG = "OverviewToHomeAnim";
 
-    // Constants to specify how to scroll RecentsView to the default page if it's not already there.
-    private static final int DEFAULT_PAGE = 0;
-    private static final int PER_PAGE_SCROLL_DURATION = 150;
-    private static final int MAX_PAGE_SCROLL_DURATION = 750;
-
     private final Launcher mLauncher;
     private final Runnable mOnReachedHome;
 
@@ -95,24 +77,8 @@ public class OverviewToHomeAnim {
             mIsHomeStaggeredAnimFinished = true;
         }
 
-        RecentsView recentsView = mLauncher.getOverviewPanel();
+        StateAnimationConfig config = new StateAnimationConfig();
-        int numPagesToScroll = recentsView.getNextPage() - DEFAULT_PAGE;
+        config.duration = startState.getTransitionDuration(mLauncher);
-        int scrollDuration = Math.min(MAX_PAGE_SCROLL_DURATION,
-                numPagesToScroll * PER_PAGE_SCROLL_DURATION);
-        int duration = Math.max(scrollDuration, startState.getTransitionDuration(mLauncher));
-
-        StateAnimationConfig config = new UseFirstInterpolatorStateAnimConfig();
-        config.duration = duration;
-        boolean isLayoutNaturalToLauncher = recentsView.getPagedOrientationHandler()
-                .isLayoutNaturalToLauncher();
-        config.setInterpolator(ANIM_OVERVIEW_TRANSLATE_X, isLayoutNaturalToLauncher
-                ? clampToProgress(FAST_OUT_SLOW_IN, 0, 0.75f) : FINAL_FRAME);
-        config.setInterpolator(ANIM_OVERVIEW_TRANSLATE_Y, FINAL_FRAME);
-        config.setInterpolator(ANIM_OVERVIEW_SCALE, FINAL_FRAME);
-        config.setInterpolator(ANIM_OVERVIEW_ACTIONS_FADE, LINEAR);
-        if (!isLayoutNaturalToLauncher) {
-            config.setInterpolator(ANIM_OVERVIEW_FADE, DEACCEL);
-        }
         AnimatorSet stateAnim = stateManager.createAtomicAnimation(
                 startState, NORMAL, config);
         stateAnim.addListener(new AnimationSuccessListener() {
@@ -125,7 +91,6 @@ public class OverviewToHomeAnim {
         anim.play(stateAnim);
         stateManager.setCurrentAnimation(anim, NORMAL);
         anim.start();
-        recentsView.snapToPage(DEFAULT_PAGE, duration);
     }
 
     private void maybeOverviewToHomeAnimComplete() {
@@ -133,17 +98,4 @@ public class OverviewToHomeAnim {
             mOnReachedHome.run();
         }
     }
-
-    /**
-     * Wrapper around StateAnimationConfig that doesn't allow interpolators to be set if they are
-     * already set. This ensures they aren't overridden before being used.
-     */
-    private static class UseFirstInterpolatorStateAnimConfig extends StateAnimationConfig {
-        @Override
-        public void setInterpolator(int animId, Interpolator interpolator) {
-            if (mInterpolators[animId] == null || interpolator == null) {
-                super.setInterpolator(animId, interpolator);
-            }
-        }
-    }
 }

quickstep/src/com/android/quickstep/util/RecentsAtomicAnimationFactory.java

@@ -15,11 +15,13 @@
  */
 package com.android.quickstep.util;
 
-import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_OFFSET;
+import static com.android.quickstep.views.RecentsView.ADJACENT_PAGE_VERTICAL_OFFSET;
 
 import android.animation.Animator;
 import android.animation.ObjectAnimator;
 
+import androidx.dynamicanimation.animation.DynamicAnimation;
+
 import com.android.launcher3.anim.SpringAnimationBuilder;
 import com.android.launcher3.statemanager.StateManager.AtomicAnimationFactory;
 import com.android.launcher3.statemanager.StatefulActivity;
@@ -29,7 +31,7 @@ public class RecentsAtomicAnimationFactory<ACTIVITY_TYPE extends StatefulActivit
         extends AtomicAnimationFactory<STATE_TYPE> {
 
     public static final int INDEX_RECENTS_FADE_ANIM = AtomicAnimationFactory.NEXT_INDEX + 0;
-    public static final int INDEX_RECENTS_TRANSLATE_X_ANIM = AtomicAnimationFactory.NEXT_INDEX + 1;
+    public static final int INDEX_RECENTS_TRANSLATE_Y_ANIM = AtomicAnimationFactory.NEXT_INDEX + 1;
 
     private static final int MY_ANIM_COUNT = 2;
 
@@ -46,14 +48,14 @@ public class RecentsAtomicAnimationFactory<ACTIVITY_TYPE extends StatefulActivit
             case INDEX_RECENTS_FADE_ANIM:
                 return ObjectAnimator.ofFloat(mActivity.getOverviewPanel(),
                         RecentsView.CONTENT_ALPHA, values);
-            case INDEX_RECENTS_TRANSLATE_X_ANIM: {
+            case INDEX_RECENTS_TRANSLATE_Y_ANIM: {
                 RecentsView rv = mActivity.getOverviewPanel();
                 return new SpringAnimationBuilder(mActivity)
-                        .setMinimumVisibleChange(1f / rv.getPageOffsetScale())
+                        .setMinimumVisibleChange(DynamicAnimation.MIN_VISIBLE_CHANGE_SCALE)
                         .setDampingRatio(0.8f)
                         .setStiffness(250)
                         .setValues(values)
-                        .build(rv, ADJACENT_PAGE_OFFSET);
+                        .build(rv, ADJACENT_PAGE_VERTICAL_OFFSET);
             }
             default:
                 return super.createStateElementAnimation(index, values);

quickstep/src/com/android/quickstep/views/LauncherRecentsView.java

@@ -21,7 +21,6 @@ import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.LauncherState.OVERVIEW_MODAL_TASK;
 import static com.android.launcher3.LauncherState.OVERVIEW_SPLIT_SELECT;
 import static com.android.launcher3.LauncherState.SPRING_LOADED;
-import static com.android.quickstep.util.NavigationModeFeatureFlag.LIVE_TILE;
 
 import android.annotation.TargetApi;
 import android.content.Context;
@@ -39,7 +38,6 @@ import com.android.launcher3.statemanager.StateManager.StateListener;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.quickstep.LauncherActivityInterface;
-import com.android.quickstep.util.OverviewToHomeAnim;
 import com.android.systemui.plugins.PluginListener;
 import com.android.systemui.plugins.RecentsExtraCard;
 
@@ -90,15 +88,7 @@ public class LauncherRecentsView extends RecentsView<BaseQuickstepLauncher, Laun
 
     @Override
     public void startHome() {
-        Runnable onReachedHome = () -> mActivity.getStateManager().goToState(NORMAL, false);
+        mActivity.getStateManager().goToState(NORMAL);
-        OverviewToHomeAnim overviewToHomeAnim = new OverviewToHomeAnim(mActivity, onReachedHome);
-        if (LIVE_TILE.get()) {
-            switchToScreenshot(null,
-                    () -> finishRecentsAnimation(true /* toRecents */,
-                            () -> overviewToHomeAnim.animateWithVelocity(0)));
-        } else {
-            overviewToHomeAnim.animateWithVelocity(0);
-        }
     }
 
     @Override

quickstep/src/com/android/quickstep/views/RecentsView.java

@@ -213,19 +213,35 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 }
             };
 
-    public static final FloatProperty<RecentsView> ADJACENT_PAGE_OFFSET =
+    public static final FloatProperty<RecentsView> ADJACENT_PAGE_HORIZONTAL_OFFSET =
-            new FloatProperty<RecentsView>("adjacentPageOffset") {
+            new FloatProperty<RecentsView>("adjacentPageHorizontalOffset") {
                 @Override
                 public void setValue(RecentsView recentsView, float v) {
-                    if (recentsView.mAdjacentPageOffset != v) {
+                    if (recentsView.mAdjacentPageHorizontalOffset != v) {
-                        recentsView.mAdjacentPageOffset = v;
+                        recentsView.mAdjacentPageHorizontalOffset = v;
                         recentsView.updatePageOffsets();
                     }
                 }
 
                 @Override
                 public Float get(RecentsView recentsView) {
-                    return recentsView.mAdjacentPageOffset;
+                    return recentsView.mAdjacentPageHorizontalOffset;
+                }
+            };
+
+    public static final FloatProperty<RecentsView> ADJACENT_PAGE_VERTICAL_OFFSET =
+            new FloatProperty<RecentsView>("adjacentPageVerticalOffset") {
+                @Override
+                public void setValue(RecentsView recentsView, float v) {
+                    if (recentsView.mAdjacentPageVerticalOffset != v) {
+                        recentsView.mAdjacentPageVerticalOffset = v;
+                        recentsView.updateVerticalPageOffsets();
+                    }
+                }
+
+                @Override
+                public Float get(RecentsView recentsView) {
+                    return recentsView.mAdjacentPageVerticalOffset;
                 }
             };
 
@@ -240,6 +256,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 @Override
                 public void setValue(RecentsView recentsView, float v) {
                     recentsView.setTaskViewsResistanceTranslation(v);
+                    recentsView.mLastComputedTaskBottomPushOutDistance = null;
+                    recentsView.updateVerticalPageOffsets();
                 }
 
                 @Override
@@ -289,9 +307,11 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                     view.setScaleY(scale);
                     view.mLastComputedTaskStartPushOutDistance = null;
                     view.mLastComputedTaskEndPushOutDistance = null;
+                    view.mLastComputedTaskBottomPushOutDistance = null;
                     view.mLiveTileTaskViewSimulator.recentsViewScale.value = scale;
-                    view.updatePageOffsets();
                     view.setTaskViewsResistanceTranslation(view.mTaskViewsSecondaryTranslation);
+                    view.updatePageOffsets();
+                    view.updateVerticalPageOffsets();
                 }
 
                 @Override
@@ -330,6 +350,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     // How much a task that is directly offscreen will be pushed out due to RecentsView scale/pivot.
     protected Float mLastComputedTaskStartPushOutDistance = null;
     protected Float mLastComputedTaskEndPushOutDistance = null;
+    protected Float mLastComputedTaskBottomPushOutDistance = null;
     protected boolean mEnableDrawingLiveTile = false;
     protected final Rect mTempRect = new Rect();
     protected final RectF mTempRectF = new RectF();
@@ -373,7 +394,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     private boolean mOverviewGridEnabled;
     private boolean mOverviewFullscreenEnabled;
 
-    private float mAdjacentPageOffset = 0;
+    private float mAdjacentPageHorizontalOffset = 0;
+    private float mAdjacentPageVerticalOffset = 0;
     protected float mTaskViewsSecondaryTranslation = 0;
     protected float mTaskViewsPrimarySplitTranslation = 0;
     protected float mTaskViewsSecondarySplitTranslation = 0;
@@ -622,28 +644,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         // Draw overscroll
         if (mAllowOverScroll && (!mEdgeGlowRight.isFinished() || !mEdgeGlowLeft.isFinished())) {
             final int restoreCount = canvas.save();
-            final int width = getWidth();
-            final int height = getHeight();
-            int primarySize = mOrientationHandler.getPrimaryValue(width, height);
-            int secondarySize = mOrientationHandler.getSecondaryValue(width, height);
 
-            float effectiveShift = 0;
+            int primarySize = mOrientationHandler.getPrimaryValue(getWidth(), getHeight());
-            if (!mEdgeGlowLeft.isFinished()) {
+            int scroll = OverScroll.dampedScroll(getUndampedOverScrollShift(), primarySize);
-                mEdgeGlowLeft.setSize(secondarySize, primarySize);
-                if (((TranslateEdgeEffect) mEdgeGlowLeft).getTranslationShift(mTempFloat)) {
-                    effectiveShift = mTempFloat[0];
-                    postInvalidateOnAnimation();
-                }
-            }
-            if (!mEdgeGlowRight.isFinished()) {
-                mEdgeGlowRight.setSize(secondarySize, primarySize);
-                if (((TranslateEdgeEffect) mEdgeGlowRight).getTranslationShift(mTempFloat)) {
-                    effectiveShift -= mTempFloat[0];
-                    postInvalidateOnAnimation();
-                }
-            }
-
-            int scroll = OverScroll.dampedScroll(effectiveShift * primarySize, primarySize);
             mOrientationHandler.set(canvas, CANVAS_TRANSLATE, scroll);
 
             if (mOverScrollShift != scroll) {
@@ -665,6 +668,31 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         }
     }
 
+    private float getUndampedOverScrollShift() {
+        final int width = getWidth();
+        final int height = getHeight();
+        int primarySize = mOrientationHandler.getPrimaryValue(width, height);
+        int secondarySize = mOrientationHandler.getSecondaryValue(width, height);
+
+        float effectiveShift = 0;
+        if (!mEdgeGlowLeft.isFinished()) {
+            mEdgeGlowLeft.setSize(secondarySize, primarySize);
+            if (((TranslateEdgeEffect) mEdgeGlowLeft).getTranslationShift(mTempFloat)) {
+                effectiveShift = mTempFloat[0];
+                postInvalidateOnAnimation();
+            }
+        }
+        if (!mEdgeGlowRight.isFinished()) {
+            mEdgeGlowRight.setSize(secondarySize, primarySize);
+            if (((TranslateEdgeEffect) mEdgeGlowRight).getTranslationShift(mTempFloat)) {
+                effectiveShift -= mTempFloat[0];
+                postInvalidateOnAnimation();
+            }
+        }
+
+        return effectiveShift * primarySize;
+    }
+
     /**
      * Returns the view shift due to overscroll
      */
@@ -1188,6 +1216,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         // Update the set of visible task's data
         loadVisibleTaskData(TaskView.FLAG_UPDATE_ALL);
         setTaskModalness(0);
+        updateVerticalPageOffsets();
     }
 
     public void setFullscreenProgress(float fullscreenProgress) {
@@ -2642,13 +2671,15 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         setTaskModalness(mTaskModalness);
         mLastComputedTaskStartPushOutDistance = null;
         mLastComputedTaskEndPushOutDistance = null;
+        mLastComputedTaskBottomPushOutDistance = null;
         updatePageOffsets();
+        updateVerticalPageOffsets();
         setImportantForAccessibility(isModal() ? IMPORTANT_FOR_ACCESSIBILITY_NO
                 : IMPORTANT_FOR_ACCESSIBILITY_AUTO);
     }
 
     private void updatePageOffsets() {
-        float offset = mAdjacentPageOffset;
+        float offset = mAdjacentPageHorizontalOffset;
         float modalOffset = ACCEL_0_75.getInterpolation(mTaskModalness);
         int count = getChildCount();
 
@@ -2659,10 +2690,10 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
         float midpointOffsetSize = 0;
         float leftOffsetSize = midpoint - 1 >= 0
-                ? -getOffsetSize(midpoint - 1, midpoint, offset)
+                ? -getHorizontalOffsetSize(midpoint - 1, midpoint, offset)
                 : 0;
         float rightOffsetSize = midpoint + 1 < count
-                ? getOffsetSize(midpoint + 1, midpoint, offset)
+                ? getHorizontalOffsetSize(midpoint + 1, midpoint, offset)
                 : 0;
 
         boolean showAsGrid = showAsGrid();
@@ -2676,14 +2707,14 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             // calculation is the task directly next to the focus task in the grid.
             int referenceIndex = modalMidpoint == 0 ? 1 : 0;
             gridOffsetSize = referenceIndex < count
-                    ? getOffsetSize(referenceIndex, modalMidpoint, modalOffset)
+                    ? getHorizontalOffsetSize(referenceIndex, modalMidpoint, modalOffset)
                     : 0;
         } else {
             modalLeftOffsetSize = modalMidpoint - 1 >= 0
-                    ? getOffsetSize(modalMidpoint - 1, modalMidpoint, modalOffset)
+                    ? getHorizontalOffsetSize(modalMidpoint - 1, modalMidpoint, modalOffset)
                     : 0;
             modalRightOffsetSize = modalMidpoint + 1 < count
-                    ? getOffsetSize(modalMidpoint + 1, modalMidpoint, modalOffset)
+                    ? getHorizontalOffsetSize(modalMidpoint + 1, modalMidpoint, modalOffset)
                     : 0;
         }
 
@@ -2734,7 +2765,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
      * translating away from the given midpoint.
      * @param offsetProgress From 0 to 1 where 0 means no offset and 1 means offset offscreen.
      */
-    private float getOffsetSize(int childIndex, int midpointIndex, float offsetProgress) {
+    private float getHorizontalOffsetSize(int childIndex, int midpointIndex, float offsetProgress) {
         if (offsetProgress == 0) {
             // Don't bother calculating everything below if we won't offset anyway.
             return 0;
@@ -2796,6 +2827,64 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         return distanceToOffscreen * offsetProgress;
     }
 
+    private void updateVerticalPageOffsets() {
+        float offset = mAdjacentPageVerticalOffset;
+        int count = getTaskViewCount();
+
+        TaskView runningTask = mRunningTaskId == -1 || !mRunningTaskTileHidden
+                ? null : getTaskView(mRunningTaskId);
+        int midpoint = runningTask == null ? -1 : indexOfChild(runningTask);
+
+        float offsetSize = getVerticalOffsetSize(offset);
+        float midpointOffsetSize = 0;
+
+        for (int i = 0; i < count; i++) {
+            float translation = i == midpoint
+                    ? midpointOffsetSize
+                    : offsetSize;
+            int directionFactor = mOrientationHandler.getSecondaryTranslationDirectionFactor() * -1;
+            translation *= directionFactor;
+            TaskView child = getTaskViewAt(i);
+            FloatProperty translationProperty = child.getSecondaryTaskOffsetTranslationProperty();
+            translationProperty.set(child, translation);
+            if (LIVE_TILE.get() && mEnableDrawingLiveTile && i == getRunningTaskIndex()) {
+                mLiveTileTaskViewSimulator.taskSecondaryTranslation.value = translation;
+                redrawLiveTile();
+            }
+        }
+    }
+
+    /**
+     * Computes the distance to offset the given child such that it is completely offscreen when
+     * translating away from its position in overview.
+     * @param offsetProgress From 0 to 1 where 0 means no offset and 1 means offset offscreen.
+     */
+    private float getVerticalOffsetSize(float offsetProgress) {
+        if (offsetProgress == 0) {
+            // Don't bother calculating everything below if we won't offset anyway.
+            return 0;
+        }
+        // First, find the distance to offscreen from the normal (centered) task position.
+        mTempRectF.set(mLastComputedTaskSize);
+        RectF taskPosition = mTempRectF;
+        float desiredTop = getHeight();
+        float distanceToOffscreen = desiredTop - taskPosition.top;
+        // Next, we need to account for the resistance translation if any (e.g. long swipe up).
+        float translationY = mTaskViewsSecondaryTranslation;
+        distanceToOffscreen -= translationY;
+        // Finally, we need to account for RecentsView scale, because it moves tasks based on its
+        // pivot. To do this, we move the task position to where it would be offscreen at scale = 1
+        // (computed above), then we apply the scale via getMatrix() to determine how much that
+        // moves the task from its desired position, and adjust the computed distance accordingly.
+        if (mLastComputedTaskBottomPushOutDistance == null) {
+            taskPosition.offsetTo(0, desiredTop + translationY);
+            getMatrix().mapRect(taskPosition);
+            mLastComputedTaskBottomPushOutDistance = (taskPosition.top - desiredTop) / getScaleY();
+        }
+        distanceToOffscreen -= mLastComputedTaskBottomPushOutDistance;
+        return distanceToOffscreen * offsetProgress;
+    }
+
     protected void setTaskViewsResistanceTranslation(float translation) {
         mTaskViewsSecondaryTranslation = translation;
         for (int i = 0; i < getTaskViewCount(); i++) {
@@ -2821,13 +2910,6 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         }
     }
 
-    /**
-     * TODO: Do not assume motion across X axis for adjacent page
-     */
-    public float getPageOffsetScale() {
-        return Math.max(getWidth(), 1);
-    }
-
     /**
      * Resets the visuals when exit modal state.
      */
@@ -3440,8 +3522,16 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         if (pageIndex == -1) {
             return 0;
         }
+
+        int overScrollShift = getOverScrollShift();
+        if (mAdjacentPageVerticalOffset > 0) {
+            // Don't dampen the scroll (due to overscroll) if the adjacent tasks are offscreen, so
+            // that the page can move freely given there's no visual indication why it shouldn't.
+            overScrollShift = (int) Utilities.mapRange(mAdjacentPageVerticalOffset, overScrollShift,
+                    getUndampedOverScrollShift());
+        }
         return getScrollForPage(pageIndex) - mOrientationHandler.getPrimaryScroll(this)
-                + getOverScrollShift();
+                + overScrollShift;
     }
 
     /**

quickstep/src/com/android/quickstep/views/TaskView.java

@@ -1151,6 +1151,11 @@ public class TaskView extends FrameLayout implements Reusable {
                 TASK_OFFSET_TRANSLATION_X, TASK_OFFSET_TRANSLATION_Y);
     }
 
+    public FloatProperty<TaskView> getSecondaryTaskOffsetTranslationProperty() {
+        return getPagedOrientationHandler().getSecondaryValue(
+                TASK_OFFSET_TRANSLATION_X, TASK_OFFSET_TRANSLATION_Y);
+    }
+
     public FloatProperty<TaskView> getTaskResistanceTranslationProperty() {
         return getPagedOrientationHandler().getSecondaryValue(
                 TASK_RESISTANCE_TRANSLATION_X, TASK_RESISTANCE_TRANSLATION_Y);

src/com/android/launcher3/Launcher.java

@@ -2780,7 +2780,7 @@ public class Launcher extends StatefulActivity<LauncherState> implements Launche
      * @see LauncherState#getOverviewScaleAndOffset(Launcher)
      */
     public float[] getNormalOverviewScaleAndOffset() {
-        return new float[] {NO_SCALE, NO_OFFSET};
+        return new float[] {NO_SCALE, NO_OFFSET, NO_OFFSET};
     }
 
     /**

src/com/android/launcher3/LauncherState.java

@@ -172,10 +172,12 @@ public abstract class LauncherState implements BaseState<LauncherState> {
     }
 
     /**
-     * Returns an array of two elements.
+     * Returns an array of three elements.
      * The first specifies the scale for the overview
      * The second is the factor ([0, 1], 0 => center-screen; 1 => offscreen) by which overview
      * should be shifted horizontally.
+     * The third is the factor ([0, 1], 0 => center-screen; 1 => offscreen) by which overview
+     * should be shifted vertically.
      */
     public float[] getOverviewScaleAndOffset(Launcher launcher) {
         return launcher.getNormalOverviewScaleAndOffset();