Merge "Refactoring PagedOrientationHandler to extract functions from to quickstep" into main

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

@@ -45,7 +45,7 @@ import com.android.launcher3.anim.AnimatorListeners;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.anim.PropertySetter;
 import com.android.launcher3.states.StateAnimationConfig;
-import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.AnimUtils;
 import com.android.quickstep.util.SplitAnimationTimings;
 import com.android.quickstep.views.ClearAllButton;
@@ -130,7 +130,7 @@ public final class RecentsViewStateController extends
         }
 
         // Create transition animations to split select
-        PagedOrientationHandler orientationHandler =
+        RecentsPagedOrientationHandler orientationHandler =
                 ((RecentsView) mLauncher.getOverviewPanel()).getPagedOrientationHandler();
         Pair<FloatProperty, FloatProperty> taskViewsFloat =
                 orientationHandler.getSplitSelectTaskOffset(

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

@@ -36,13 +36,13 @@ 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.PagedOrientationHandler;
 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.launcher3.views.BaseDragLayer;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.VibrationConstants;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskView;
@@ -225,7 +225,8 @@ public abstract class TaskViewTouchController<T extends BaseDraggingActivity>
             mCurrentAnimation.dispatchOnCancel();
         }
 
-        PagedOrientationHandler orientationHandler = mRecentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                mRecentsView.getPagedOrientationHandler();
         mCurrentAnimationIsGoingUp = goingUp;
         BaseDragLayer dl = mActivity.getDragLayer();
         final int secondaryLayerDimension = orientationHandler.getSecondaryDimension(dl);
@@ -269,7 +270,8 @@ public abstract class TaskViewTouchController<T extends BaseDraggingActivity>
 
     @Override
     public void onDragStart(boolean start, float startDisplacement) {
-        PagedOrientationHandler orientationHandler = mRecentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                mRecentsView.getPagedOrientationHandler();
         if (mCurrentAnimation == null) {
             reInitAnimationController(orientationHandler.isGoingUp(startDisplacement, mIsRtl));
             mDisplacementShift = 0;
@@ -283,7 +285,8 @@ public abstract class TaskViewTouchController<T extends BaseDraggingActivity>
 
     @Override
     public boolean onDrag(float displacement) {
-        PagedOrientationHandler orientationHandler = mRecentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                mRecentsView.getPagedOrientationHandler();
         float totalDisplacement = displacement + mDisplacementShift;
         boolean isGoingUp = totalDisplacement == 0 ? mCurrentAnimationIsGoingUp :
                 orientationHandler.isGoingUp(totalDisplacement, mIsRtl);
@@ -346,7 +349,8 @@ public abstract class TaskViewTouchController<T extends BaseDraggingActivity>
         if (blockedFling) {
             fling = false;
         }
-        PagedOrientationHandler orientationHandler = mRecentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                mRecentsView.getPagedOrientationHandler();
         boolean goingUp = orientationHandler.isGoingUp(velocity, mIsRtl);
         float progress = mCurrentAnimation.getProgressFraction();
         float interpolatedProgress = mCurrentAnimation.getInterpolatedProgress();

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

@@ -62,6 +62,7 @@ import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.NavigationMode;
 import com.android.launcher3.views.ScrimView;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.AnimatorControllerWithResistance;
 import com.android.quickstep.views.RecentsView;
@@ -128,7 +129,7 @@ public abstract class BaseActivityInterface<STATE_TYPE extends BaseState<STATE_T
 
     public abstract int getSwipeUpDestinationAndLength(
             DeviceProfile dp, Context context, Rect outRect,
-            PagedOrientationHandler orientationHandler);
+            RecentsPagedOrientationHandler orientationHandler);
 
     /** Called when the animation to home has fully settled. */
     public void onSwipeUpToHomeComplete(RecentsAnimationDeviceState deviceState) {}

quickstep/src/com/android/quickstep/FallbackActivityInterface.java

@@ -32,10 +32,10 @@ import androidx.annotation.Nullable;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.taskbar.FallbackTaskbarUIController;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.DisplayController;
 import com.android.quickstep.GestureState.GestureEndTarget;
 import com.android.quickstep.fallback.RecentsState;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.AnimatorControllerWithResistance;
 import com.android.quickstep.views.RecentsView;
@@ -60,7 +60,7 @@ public final class FallbackActivityInterface extends
     /** 2 */
     @Override
     public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect,
-            PagedOrientationHandler orientationHandler) {
+            RecentsPagedOrientationHandler orientationHandler) {
         calculateTaskSize(context, dp, outRect, orientationHandler);
         if (dp.isVerticalBarLayout() && DisplayController.getNavigationMode(context) != NO_BUTTON) {
             return dp.isSeascape() ? outRect.left : (dp.widthPx - outRect.right);

quickstep/src/com/android/quickstep/LauncherActivityInterface.java

@@ -46,11 +46,11 @@ import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.statehandlers.DesktopVisibilityController;
 import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.taskbar.LauncherTaskbarUIController;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.uioverrides.QuickstepLauncher;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.NavigationMode;
 import com.android.quickstep.GestureState.GestureEndTarget;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.AnimatorControllerWithResistance;
 import com.android.quickstep.util.LayoutUtils;
@@ -74,7 +74,7 @@ public final class LauncherActivityInterface extends
 
     @Override
     public int getSwipeUpDestinationAndLength(DeviceProfile dp, Context context, Rect outRect,
-            PagedOrientationHandler orientationHandler) {
+            RecentsPagedOrientationHandler orientationHandler) {
         calculateTaskSize(context, dp, outRect, orientationHandler);
         if (dp.isVerticalBarLayout()
                 && DisplayController.getNavigationMode(context) != NavigationMode.NO_BUTTON) {

quickstep/src/com/android/quickstep/QuickstepTestInformationHandler.java

@@ -14,8 +14,8 @@ import androidx.annotation.Nullable;
 import com.android.launcher3.taskbar.TaskbarActivityContext;
 import com.android.launcher3.testing.TestInformationHandler;
 import com.android.launcher3.testing.shared.TestProtocol;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.DisplayController;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.LayoutUtils;
 import com.android.quickstep.util.TISBindHelper;
 import com.android.quickstep.views.RecentsView;
@@ -56,7 +56,7 @@ public class QuickstepTestInformationHandler extends TestInformationHandler {
                 }
                 Rect focusedTaskRect = new Rect();
                 LauncherActivityInterface.INSTANCE.calculateTaskSize(mContext, mDeviceProfile,
-                        focusedTaskRect, PagedOrientationHandler.PORTRAIT);
+                        focusedTaskRect, RecentsPagedOrientationHandler.PORTRAIT);
                 response.putInt(TestProtocol.TEST_INFO_RESPONSE_FIELD, focusedTaskRect.height());
                 return response;
             }
@@ -67,7 +67,7 @@ public class QuickstepTestInformationHandler extends TestInformationHandler {
                 }
                 Rect gridTaskRect = new Rect();
                 LauncherActivityInterface.INSTANCE.calculateGridTaskSize(mContext, mDeviceProfile,
-                        gridTaskRect, PagedOrientationHandler.PORTRAIT);
+                        gridTaskRect, RecentsPagedOrientationHandler.PORTRAIT);
                 response.putParcelable(TestProtocol.TEST_INFO_RESPONSE_FIELD, gridTaskRect);
                 return response;
             }

quickstep/src/com/android/quickstep/SwipeUpAnimationLogic.java

@@ -37,6 +37,7 @@ import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.quickstep.RemoteTargetGluer.RemoteTargetHandle;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.AnimatorControllerWithResistance;
 import com.android.quickstep.util.RectFSpringAnim;
 import com.android.quickstep.util.RectFSpringAnim.DefaultSpringConfig;
@@ -151,7 +152,7 @@ public abstract class SwipeUpAnimationLogic implements
     @UiThread
     public abstract void onCurrentShiftUpdated();
 
-    protected PagedOrientationHandler getOrientationHandler() {
+    protected RecentsPagedOrientationHandler getOrientationHandler() {
         // OrientationHandler should be independent of remote target, can directly take one
         return mRemoteTargetHandles[0].getTaskViewSimulator()
                 .getOrientationState().getOrientationHandler();

quickstep/src/com/android/quickstep/TaskShortcutFactory.java

@@ -47,9 +47,9 @@ import com.android.launcher3.logging.StatsLogManager.LauncherEvent;
 import com.android.launcher3.model.WellbeingModel;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.popup.SystemShortcut.AppInfo;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.InstantAppResolver;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.views.GroupedTaskView;
 import com.android.quickstep.views.RecentsView;
 import com.android.quickstep.views.TaskThumbnailView;
@@ -281,7 +281,7 @@ public interface TaskShortcutFactory {
             final int intentFlags = task.key.baseIntent.getFlags();
             final TaskView taskView = taskContainer.getTaskView();
             final RecentsView recentsView = taskView.getRecentsView();
-            final PagedOrientationHandler orientationHandler =
+            final RecentsPagedOrientationHandler orientationHandler =
                     recentsView.getPagedOrientationHandler();
 
             boolean notEnoughTasksToSplit =

quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.java

@@ -0,0 +1,683 @@
+/*
+ * Copyright (C) 2024 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.quickstep.orientation;
+
+import static android.view.Gravity.BOTTOM;
+import static android.view.Gravity.CENTER_VERTICAL;
+import static android.view.Gravity.END;
+import static android.view.Gravity.LEFT;
+import static android.view.Gravity.START;
+import static android.view.Gravity.TOP;
+import static android.view.View.LAYOUT_DIRECTION_RTL;
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
+import static com.android.launcher3.Flags.enableOverviewIconMenu;
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X;
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_Y;
+import static com.android.launcher3.touch.SingleAxisSwipeDetector.HORIZONTAL;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_BOTTOM_OR_RIGHT;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_UNDEFINED;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_TYPE_MAIN;
+
+import android.content.res.Resources;
+import android.graphics.PointF;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.ShapeDrawable;
+import android.util.FloatProperty;
+import android.util.Pair;
+import android.view.Gravity;
+import android.view.MotionEvent;
+import android.view.Surface;
+import android.view.VelocityTracker;
+import android.view.View;
+import android.view.accessibility.AccessibilityEvent;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.touch.SingleAxisSwipeDetector;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitBounds;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
+import com.android.launcher3.views.BaseDragLayer;
+import com.android.quickstep.views.IconAppChipView;
+
+import java.util.Collections;
+import java.util.List;
+
+public class LandscapePagedViewHandler implements RecentsPagedOrientationHandler {
+
+    @Override
+    public <T> T getPrimaryValue(T x, T y) {
+        return y;
+    }
+
+    @Override
+    public <T> T getSecondaryValue(T x, T y) {
+        return x;
+    }
+
+    @Override
+    public int getPrimaryValue(int x, int y) {
+        return y;
+    }
+
+    @Override
+    public int getSecondaryValue(int x, int y) {
+        return x;
+    }
+
+    @Override
+    public float getPrimaryValue(float x, float y) {
+        return y;
+    }
+
+    @Override
+    public float getSecondaryValue(float x, float y) {
+        return x;
+    }
+
+    @Override
+    public boolean isLayoutNaturalToLauncher() {
+        return false;
+    }
+
+    @Override
+    public void adjustFloatingIconStartVelocity(PointF velocity) {
+        float oldX = velocity.x;
+        float oldY = velocity.y;
+        velocity.set(-oldY, oldX);
+    }
+
+    @Override
+    public void fixBoundsForHomeAnimStartRect(RectF outStartRect, DeviceProfile deviceProfile) {
+        // We don't need to check the "top" value here because the startRect is in the orientation
+        // of the app, not of the fixed portrait launcher.
+        if (outStartRect.left > deviceProfile.heightPx) {
+            outStartRect.offsetTo(0, outStartRect.top);
+        } else if (outStartRect.left < -deviceProfile.heightPx) {
+            outStartRect.offsetTo(0, outStartRect.top);
+        }
+    }
+
+    @Override
+    public <T> void setPrimary(T target, Int2DAction<T> action, int param) {
+        action.call(target, 0, param);
+    }
+
+    @Override
+    public <T> void setPrimary(T target, Float2DAction<T> action, float param) {
+        action.call(target, 0, param);
+    }
+
+    @Override
+    public <T> void setSecondary(T target, Float2DAction<T> action, float param) {
+        action.call(target, param, 0);
+    }
+
+    @Override
+    public <T> void set(T target, Int2DAction<T> action, int primaryParam,
+            int secondaryParam) {
+        action.call(target, secondaryParam, primaryParam);
+    }
+
+    @Override
+    public float getPrimaryDirection(MotionEvent event, int pointerIndex) {
+        return event.getY(pointerIndex);
+    }
+
+    @Override
+    public float getPrimaryVelocity(VelocityTracker velocityTracker, int pointerId) {
+        return velocityTracker.getYVelocity(pointerId);
+    }
+
+    @Override
+    public int getMeasuredSize(View view) {
+        return view.getMeasuredHeight();
+    }
+
+    @Override
+    public int getPrimarySize(View view) {
+        return view.getHeight();
+    }
+
+    @Override
+    public float getPrimarySize(RectF rect) {
+        return rect.height();
+    }
+
+    @Override
+    public float getStart(RectF rect) {
+        return rect.top;
+    }
+
+    @Override
+    public float getEnd(RectF rect) {
+        return rect.bottom;
+    }
+
+    @Override
+    public int getClearAllSidePadding(View view, boolean isRtl) {
+        return (isRtl ? view.getPaddingBottom() : - view.getPaddingTop()) / 2;
+    }
+
+    @Override
+    public int getSecondaryDimension(View view) {
+        return view.getWidth();
+    }
+
+    @Override
+    public FloatProperty<View> getPrimaryViewTranslate() {
+        return VIEW_TRANSLATE_Y;
+    }
+
+    @Override
+    public FloatProperty<View> getSecondaryViewTranslate() {
+        return VIEW_TRANSLATE_X;
+    }
+
+    @Override
+    public int getPrimaryScroll(View view) {
+        return view.getScrollY();
+    }
+
+    @Override
+    public float getPrimaryScale(View view) {
+        return view.getScaleY();
+    }
+
+    @Override
+    public void setMaxScroll(AccessibilityEvent event, int maxScroll) {
+        event.setMaxScrollY(maxScroll);
+    }
+
+    @Override
+    public boolean getRecentsRtlSetting(Resources resources) {
+        return !Utilities.isRtl(resources);
+    }
+
+    @Override
+    public float getDegreesRotated() {
+        return 90;
+    }
+
+    @Override
+    public int getRotation() {
+        return Surface.ROTATION_90;
+    }
+
+    @Override
+    public void setPrimaryScale(View view, float scale) {
+        view.setScaleY(scale);
+    }
+
+    @Override
+    public void setSecondaryScale(View view, float scale) {
+        view.setScaleX(scale);
+    }
+
+    @Override
+    public int getChildStart(View view) {
+        return view.getTop();
+    }
+
+    @Override
+    public int getCenterForPage(View view, Rect insets) {
+        return (view.getPaddingLeft() + view.getMeasuredWidth() + insets.left
+            - insets.right - view.getPaddingRight()) / 2;
+    }
+
+    @Override
+    public int getScrollOffsetStart(View view, Rect insets) {
+        return insets.top + view.getPaddingTop();
+    }
+
+    @Override
+    public int getScrollOffsetEnd(View view, Rect insets) {
+        return view.getHeight() - view.getPaddingBottom() - insets.bottom;
+    }
+
+    public int getSecondaryTranslationDirectionFactor() {
+        return 1;
+    }
+
+    @Override
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
+        if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+            return -1;
+        } else {
+            return 1;
+        }
+    }
+
+    @Override
+    public float getTaskMenuX(float x, View thumbnailView,
+            DeviceProfile deviceProfile, float taskInsetMargin, View taskViewIcon) {
+        if (enableOverviewIconMenu()) {
+            return x + (taskInsetMargin / 2f);
+        }
+        return thumbnailView.getMeasuredWidth() + x - taskInsetMargin;
+    }
+
+    @Override
+    public float getTaskMenuY(float y, View thumbnailView, int stagePosition,
+            View taskMenuView, float taskInsetMargin, View taskViewIcon) {
+        if (enableOverviewIconMenu()) {
+            return y - (thumbnailView.getLayoutDirection() == LAYOUT_DIRECTION_RTL
+                    ? taskMenuView.getMeasuredHeight() * 2 - (taskInsetMargin / 2f)
+                    : taskMenuView.getMeasuredHeight());
+
+        }
+        BaseDragLayer.LayoutParams lp = (BaseDragLayer.LayoutParams) taskMenuView.getLayoutParams();
+        int taskMenuWidth = lp.width;
+        if (stagePosition == STAGE_POSITION_UNDEFINED) {
+            return y + taskInsetMargin
+                    + (thumbnailView.getMeasuredHeight() - taskMenuWidth) / 2f;
+        } else {
+            return y + taskInsetMargin;
+        }
+    }
+
+    @Override
+    public int getTaskMenuWidth(View thumbnailView, DeviceProfile deviceProfile,
+            @StagePosition int stagePosition) {
+        if (enableOverviewIconMenu()) {
+            return thumbnailView.getResources().getDimensionPixelSize(
+                    R.dimen.task_thumbnail_icon_menu_max_width);
+        }
+        if (stagePosition == SplitConfigurationOptions.STAGE_POSITION_UNDEFINED) {
+            return thumbnailView.getMeasuredWidth();
+        } else {
+            return thumbnailView.getMeasuredHeight();
+        }
+    }
+
+    @Override
+    public void setTaskOptionsMenuLayoutOrientation(DeviceProfile deviceProfile,
+            LinearLayout taskMenuLayout, int dividerSpacing,
+            ShapeDrawable dividerDrawable) {
+        taskMenuLayout.setOrientation(LinearLayout.VERTICAL);
+        dividerDrawable.setIntrinsicHeight(dividerSpacing);
+        taskMenuLayout.setDividerDrawable(dividerDrawable);
+    }
+
+    @Override
+    public void setLayoutParamsForTaskMenuOptionItem(LinearLayout.LayoutParams lp,
+            LinearLayout viewGroup, DeviceProfile deviceProfile) {
+        // Phone fake landscape
+        viewGroup.setOrientation(LinearLayout.HORIZONTAL);
+        lp.width = MATCH_PARENT;
+        lp.height = WRAP_CONTENT;
+    }
+
+    @Override
+    public Pair<Float, Float> getDwbLayoutTranslations(int taskViewWidth,
+            int taskViewHeight, SplitBounds splitBounds, DeviceProfile deviceProfile,
+            View[] thumbnailViews, int desiredTaskId, View banner) {
+        boolean isRtl = banner.getLayoutDirection() == LAYOUT_DIRECTION_RTL;
+        float translationX = 0;
+        float translationY = 0;
+        FrameLayout.LayoutParams bannerParams = (FrameLayout.LayoutParams) banner.getLayoutParams();
+        banner.setPivotX(0);
+        banner.setPivotY(0);
+        banner.setRotation(getDegreesRotated());
+        translationX = banner.getHeight();
+        FrameLayout.LayoutParams snapshotParams =
+                (FrameLayout.LayoutParams) thumbnailViews[0]
+                        .getLayoutParams();
+        bannerParams.gravity = TOP | (isRtl ? END : START);
+        if (splitBounds == null) {
+            // Single, fullscreen case
+            bannerParams.width = taskViewHeight - snapshotParams.topMargin;
+            return new Pair<>(translationX, Integer.valueOf(snapshotParams.topMargin).floatValue());
+        }
+
+        // Set correct width
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            bannerParams.width = thumbnailViews[0].getMeasuredHeight();
+        } else {
+            bannerParams.width = thumbnailViews[1].getMeasuredHeight();
+        }
+
+        // Set translations
+        if (desiredTaskId == splitBounds.rightBottomTaskId) {
+            float topLeftTaskPlusDividerPercent = splitBounds.appsStackedVertically
+                    ? (splitBounds.topTaskPercent + splitBounds.dividerHeightPercent)
+                    : (splitBounds.leftTaskPercent + splitBounds.dividerWidthPercent);
+            translationY = snapshotParams.topMargin
+                    + ((taskViewHeight - snapshotParams.topMargin) * topLeftTaskPlusDividerPercent);
+        }
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            translationY = snapshotParams.topMargin;
+        }
+        return new Pair<>(translationX, translationY);
+    }
+
+    /* ---------- The following are only used by TaskViewTouchHandler. ---------- */
+
+    @Override
+    public SingleAxisSwipeDetector.Direction getUpDownSwipeDirection() {
+        return HORIZONTAL;
+    }
+
+    @Override
+    public int getUpDirection(boolean isRtl) {
+        return isRtl ? SingleAxisSwipeDetector.DIRECTION_NEGATIVE
+                : SingleAxisSwipeDetector.DIRECTION_POSITIVE;
+    }
+
+    @Override
+    public boolean isGoingUp(float displacement, boolean isRtl) {
+        return isRtl ? displacement < 0 : displacement > 0;
+    }
+
+    @Override
+    public int getTaskDragDisplacementFactor(boolean isRtl) {
+        return isRtl ? 1 : -1;
+    }
+
+    /* -------------------- */
+
+    @Override
+    public ChildBounds getChildBounds(View child, int childStart, int pageCenter,
+            boolean layoutChild) {
+        final int childHeight = child.getMeasuredHeight();
+        final int childBottom = childStart + childHeight;
+        final int childWidth = child.getMeasuredWidth();
+        final int childLeft = pageCenter - childWidth/ 2;
+        if (layoutChild) {
+            child.layout(childLeft, childStart, childLeft + childWidth, childBottom);
+        }
+        return new ChildBounds(childHeight, childWidth, childBottom, childLeft);
+    }
+
+    @SuppressWarnings("SuspiciousNameCombination")
+    @Override
+    public int getDistanceToBottomOfRect(DeviceProfile dp, Rect rect) {
+        return rect.left;
+    }
+
+    @Override
+    public List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp) {
+        // Add "left" side of phone which is actually the top
+        return Collections.singletonList(new SplitPositionOption(
+                R.drawable.ic_split_horizontal, R.string.recent_task_option_split_screen,
+                STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
+    }
+
+    @Override
+    public void getInitialSplitPlaceholderBounds(int placeholderHeight, int placeholderInset,
+            DeviceProfile dp, @StagePosition int stagePosition, Rect out) {
+        // In fake land/seascape, the placeholder always needs to go to the "top" of the device,
+        // which is the same bounds as 0 rotation.
+        int width = dp.widthPx;
+        int insetSizeAdjustment = getPlaceholderSizeAdjustment(dp);
+        out.set(0, 0, width, placeholderHeight + insetSizeAdjustment);
+        out.inset(placeholderInset, 0);
+
+        // Adjust the top to account for content off screen. This will help to animate the view in
+        // with rounded corners.
+        int screenWidth = dp.widthPx;
+        int screenHeight = dp.heightPx;
+        int totalHeight = (int) (1.0f * screenHeight / 2 * (screenWidth - 2 * placeholderInset)
+                / screenWidth);
+        out.top -= (totalHeight - placeholderHeight);
+    }
+
+    @Override
+    public void updateSplitIconParams(View out, float onScreenRectCenterX,
+            float onScreenRectCenterY, float fullscreenScaleX, float fullscreenScaleY,
+            int drawableWidth, int drawableHeight, DeviceProfile dp,
+            @StagePosition int stagePosition) {
+        float insetAdjustment = getPlaceholderSizeAdjustment(dp) / 2f;
+        out.setX(onScreenRectCenterX / fullscreenScaleX
+                - 1.0f * drawableWidth / 2);
+        out.setY((onScreenRectCenterY + insetAdjustment) / fullscreenScaleY
+                - 1.0f * drawableHeight / 2);
+    }
+
+    /**
+     * The split placeholder comes with a default inset to buffer the icon from the top of the
+     * screen. But if the device already has a large inset (from cutouts etc), use that instead.
+     */
+    private int getPlaceholderSizeAdjustment(DeviceProfile dp) {
+        return Math.max(dp.getInsets().top - dp.splitPlaceholderInset, 0);
+    }
+
+    @Override
+    public void setSplitInstructionsParams(View out, DeviceProfile dp, int splitInstructionsHeight,
+            int splitInstructionsWidth) {
+        out.setPivotX(0);
+        out.setPivotY(splitInstructionsHeight);
+        out.setRotation(getDegreesRotated());
+        int distanceToEdge = out.getResources().getDimensionPixelSize(
+                R.dimen.split_instructions_bottom_margin_phone_landscape);
+        // Adjust for any insets on the left edge
+        int insetCorrectionX = dp.getInsets().left;
+        // Center the view in case of unbalanced insets on top or bottom of screen
+        int insetCorrectionY = (dp.getInsets().bottom - dp.getInsets().top) / 2;
+        out.setTranslationX(distanceToEdge - insetCorrectionX);
+        out.setTranslationY(((-splitInstructionsHeight - splitInstructionsWidth) / 2f)
+                + insetCorrectionY);
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) out.getLayoutParams();
+        // Setting gravity to LEFT instead of the lint-recommended START because we always want this
+        // view to be screen-left when phone is in landscape, regardless of the RtL setting.
+        lp.gravity = LEFT | CENTER_VERTICAL;
+        out.setLayoutParams(lp);
+    }
+
+    @Override
+    public void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
+            @StagePosition int stagePosition, Rect out1, Rect out2) {
+        // In fake land/seascape, the window bounds are always top and bottom half
+        int screenHeight = dp.heightPx;
+        int screenWidth = dp.widthPx;
+        out1.set(0, 0, screenWidth, screenHeight / 2  - splitDividerSize);
+        out2.set(0, screenHeight / 2  + splitDividerSize, screenWidth, screenHeight);
+    }
+
+    @Override
+    public void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect,
+            SplitBounds splitInfo, int desiredStagePosition) {
+        float topLeftTaskPercent = splitInfo.appsStackedVertically
+                ? splitInfo.topTaskPercent
+                : splitInfo.leftTaskPercent;
+        float dividerBarPercent = splitInfo.appsStackedVertically
+                ? splitInfo.dividerHeightPercent
+                : splitInfo.dividerWidthPercent;
+
+        if (desiredStagePosition == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
+            outRect.bottom = outRect.top + (int) (outRect.height() * topLeftTaskPercent);
+        } else {
+            outRect.top += (int) (outRect.height() * (topLeftTaskPercent + dividerBarPercent));
+        }
+    }
+
+    @Override
+    public void measureGroupedTaskViewThumbnailBounds(View primarySnapshot, View secondarySnapshot,
+            int parentWidth, int parentHeight, SplitBounds splitBoundsConfig, DeviceProfile dp,
+            boolean isRtl) {
+        FrameLayout.LayoutParams primaryParams =
+                (FrameLayout.LayoutParams) primarySnapshot.getLayoutParams();
+        FrameLayout.LayoutParams secondaryParams =
+                (FrameLayout.LayoutParams) secondarySnapshot.getLayoutParams();
+
+        // Swap the margins that are set in TaskView#setRecentsOrientedState()
+        secondaryParams.topMargin = dp.overviewTaskThumbnailTopMarginPx;
+        primaryParams.topMargin = 0;
+
+        // Measure and layout the thumbnails bottom up, since the primary is on the visual left
+        // (portrait bottom) and secondary is on the right (portrait top)
+        int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
+        int totalThumbnailHeight = parentHeight - spaceAboveSnapshot;
+        int dividerBar = Math.round(totalThumbnailHeight * (splitBoundsConfig.appsStackedVertically
+                ? splitBoundsConfig.dividerHeightPercent
+                : splitBoundsConfig.dividerWidthPercent));
+        int primarySnapshotHeight;
+        int primarySnapshotWidth;
+        int secondarySnapshotHeight;
+        int secondarySnapshotWidth;
+
+        float taskPercent = splitBoundsConfig.appsStackedVertically ?
+                splitBoundsConfig.topTaskPercent : splitBoundsConfig.leftTaskPercent;
+        primarySnapshotWidth = parentWidth;
+        primarySnapshotHeight = (int) (totalThumbnailHeight * (taskPercent));
+
+        secondarySnapshotWidth = parentWidth;
+        secondarySnapshotHeight = totalThumbnailHeight - primarySnapshotHeight - dividerBar;
+
+        int translationY = primarySnapshotHeight + spaceAboveSnapshot + dividerBar;
+        primarySnapshot.setTranslationY(spaceAboveSnapshot);
+        secondarySnapshot.setTranslationY(translationY - spaceAboveSnapshot);
+
+        primarySnapshot.measure(
+                View.MeasureSpec.makeMeasureSpec(primarySnapshotWidth, View.MeasureSpec.EXACTLY),
+                View.MeasureSpec.makeMeasureSpec(primarySnapshotHeight, View.MeasureSpec.EXACTLY)
+        );
+        secondarySnapshot.measure(
+                View.MeasureSpec.makeMeasureSpec(secondarySnapshotWidth, View.MeasureSpec.EXACTLY),
+                View.MeasureSpec.makeMeasureSpec(secondarySnapshotHeight, View.MeasureSpec.EXACTLY)
+        );
+    }
+
+    @Override
+    public void setTaskIconParams(FrameLayout.LayoutParams iconParams, int taskIconMargin,
+            int taskIconHeight, int thumbnailTopMargin, boolean isRtl) {
+        if (enableOverviewIconMenu()) {
+            iconParams.gravity = Gravity.START | Gravity.CENTER_VERTICAL;
+            iconParams.topMargin = 0;
+            return;
+        }
+        iconParams.gravity = (isRtl ? START : END) | CENTER_VERTICAL;
+        iconParams.rightMargin = -taskIconHeight - taskIconMargin / 2;
+        iconParams.leftMargin = 0;
+        iconParams.topMargin = thumbnailTopMargin / 2;
+        iconParams.bottomMargin = 0;
+    }
+
+    @Override
+    public void setIconAppChipMenuParams(IconAppChipView iconAppChipView,
+            FrameLayout.LayoutParams iconMenuParams, int iconMenuMargin, int thumbnailTopMargin) {
+        boolean isRtl = iconAppChipView.getLayoutDirection() == LAYOUT_DIRECTION_RTL;
+        iconMenuParams.gravity = (isRtl ? START : END) | (isRtl ? BOTTOM : TOP);
+        iconMenuParams.setMarginStart(isRtl ? iconMenuMargin : 0);
+        iconMenuParams.topMargin = iconMenuMargin;
+        iconMenuParams.bottomMargin = isRtl ? iconMenuMargin : 0;
+        iconMenuParams.setMarginEnd(iconMenuMargin);
+
+        iconAppChipView.setPivotX(isRtl ? iconMenuParams.width - (iconMenuParams.height / 2f)
+                : iconMenuParams.width / 2f);
+        iconAppChipView.setPivotY(
+                isRtl ? (iconMenuParams.height / 2f) : iconMenuParams.width / 2f);
+        iconAppChipView.setTranslationY(0);
+        iconAppChipView.setRotation(getDegreesRotated());
+    }
+
+    @Override
+    public void setSplitIconParams(View primaryIconView, View secondaryIconView,
+            int taskIconHeight, int primarySnapshotWidth, int primarySnapshotHeight,
+            int groupedTaskViewHeight, int groupedTaskViewWidth, boolean isRtl,
+            DeviceProfile deviceProfile, SplitBounds splitConfig) {
+        FrameLayout.LayoutParams primaryIconParams =
+                (FrameLayout.LayoutParams) primaryIconView.getLayoutParams();
+        FrameLayout.LayoutParams secondaryIconParams = enableOverviewIconMenu()
+                ? (FrameLayout.LayoutParams) secondaryIconView.getLayoutParams()
+                : new FrameLayout.LayoutParams(primaryIconParams);
+
+        // We calculate the "midpoint" of the thumbnail area, and place the icons there.
+        // This is the place where the thumbnail area splits by default, in a near-50/50 split.
+        // It is usually not exactly 50/50, due to insets/screen cutouts.
+        int fullscreenInsetThickness = deviceProfile.getInsets().top
+                - deviceProfile.getInsets().bottom;
+        int fullscreenMidpointFromBottom = ((deviceProfile.heightPx - fullscreenInsetThickness)
+                / 2);
+        float midpointFromBottomPct = (float) fullscreenMidpointFromBottom / deviceProfile.heightPx;
+        float insetPct = (float) fullscreenInsetThickness / deviceProfile.heightPx;
+        int spaceAboveSnapshots = deviceProfile.overviewTaskThumbnailTopMarginPx;
+        int overviewThumbnailAreaThickness = groupedTaskViewHeight - spaceAboveSnapshots;
+        int bottomToMidpointOffset = (int) (overviewThumbnailAreaThickness * midpointFromBottomPct);
+        int insetOffset = (int) (overviewThumbnailAreaThickness * insetPct);
+
+        if (enableOverviewIconMenu()) {
+            primaryIconParams.gravity = isRtl ? BOTTOM | START : TOP | END;
+            secondaryIconParams.gravity = isRtl ? BOTTOM | START : TOP | END;
+        } else {
+            primaryIconParams.gravity = BOTTOM | (isRtl ? START : END);
+            secondaryIconParams.gravity = BOTTOM | (isRtl ? START : END);
+        }
+        primaryIconView.setTranslationX(0);
+        secondaryIconView.setTranslationX(0);
+        if (enableOverviewIconMenu()) {
+            if (primaryIconView.getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
+                secondaryIconView.setTranslationY(-primarySnapshotHeight);
+                primaryIconView.setTranslationY(0);
+            } else {
+                int secondarySnapshotHeight = groupedTaskViewHeight - primarySnapshotHeight;
+                primaryIconView.setTranslationY(secondarySnapshotHeight);
+            }
+        } else if (splitConfig.initiatedFromSeascape) {
+            // if the split was initiated from seascape,
+            // the task on the right (secondary) is slightly larger
+            primaryIconView.setTranslationY(-bottomToMidpointOffset - insetOffset);
+            secondaryIconView.setTranslationY(-bottomToMidpointOffset - insetOffset
+                    + taskIconHeight);
+        } else {
+            // if not,
+            // the task on the left (primary) is slightly larger
+            primaryIconView.setTranslationY(-bottomToMidpointOffset);
+            secondaryIconView.setTranslationY(-bottomToMidpointOffset + taskIconHeight);
+        }
+
+        primaryIconView.setLayoutParams(primaryIconParams);
+        secondaryIconView.setLayoutParams(secondaryIconParams);
+    }
+
+    @Override
+    public int getDefaultSplitPosition(DeviceProfile deviceProfile) {
+        throw new IllegalStateException("Default position not available in fake landscape");
+    }
+
+    @Override
+    public Pair<FloatProperty, FloatProperty> getSplitSelectTaskOffset(FloatProperty primary,
+            FloatProperty secondary, DeviceProfile deviceProfile) {
+        return new Pair<>(primary, secondary);
+    }
+
+    @Override
+    public float getFloatingTaskOffscreenTranslationTarget(View floatingTask, RectF onScreenRect,
+            @StagePosition int stagePosition, DeviceProfile dp) {
+        float currentTranslationY = floatingTask.getTranslationY();
+        return currentTranslationY - onScreenRect.height();
+    }
+
+    @Override
+    public void setFloatingTaskPrimaryTranslation(View floatingTask, float translation,
+            DeviceProfile dp) {
+        floatingTask.setTranslationY(translation);
+    }
+
+    @Override
+    public Float getFloatingTaskPrimaryTranslation(View floatingTask, DeviceProfile dp) {
+        return floatingTask.getTranslationY();
+    }
+}

quickstep/src/com/android/quickstep/orientation/PortraitPagedViewHandler.java

@@ -0,0 +1,778 @@
+/*
+ * Copyright (C) 2024 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.quickstep.orientation;
+
+import static android.view.Gravity.BOTTOM;
+import static android.view.Gravity.CENTER_HORIZONTAL;
+import static android.view.Gravity.END;
+import static android.view.Gravity.START;
+import static android.view.Gravity.TOP;
+import static android.view.View.LAYOUT_DIRECTION_RTL;
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
+import static com.android.launcher3.Flags.enableOverviewIconMenu;
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_X;
+import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_Y;
+import static com.android.launcher3.touch.SingleAxisSwipeDetector.VERTICAL;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_BOTTOM_OR_RIGHT;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_TYPE_MAIN;
+
+import android.graphics.Matrix;
+import android.graphics.PointF;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.ShapeDrawable;
+import android.util.FloatProperty;
+import android.util.Pair;
+import android.view.Gravity;
+import android.view.Surface;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.touch.DefaultPagedViewHandler;
+import com.android.launcher3.touch.SingleAxisSwipeDetector;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitBounds;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
+import com.android.quickstep.views.IconAppChipView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PortraitPagedViewHandler extends DefaultPagedViewHandler implements
+        RecentsPagedOrientationHandler {
+
+    private final Matrix mTmpMatrix = new Matrix();
+    private final RectF mTmpRectF = new RectF();
+
+    @Override
+    public <T> T getPrimaryValue(T x, T y) {
+        return x;
+    }
+
+    @Override
+    public <T> T getSecondaryValue(T x, T y) {
+        return y;
+    }
+    @Override
+    public boolean isLayoutNaturalToLauncher() {
+        return true;
+    }
+
+    @Override
+    public void adjustFloatingIconStartVelocity(PointF velocity) {
+        //no-op
+    }
+
+    @Override
+    public void fixBoundsForHomeAnimStartRect(RectF outStartRect, DeviceProfile deviceProfile) {
+        if (outStartRect.left > deviceProfile.widthPx) {
+            outStartRect.offsetTo(0, outStartRect.top);
+        } else if (outStartRect.left < -deviceProfile.widthPx) {
+            outStartRect.offsetTo(0, outStartRect.top);
+        }
+    }
+
+    @Override
+    public <T> void setSecondary(T target, Float2DAction<T> action, float param) {
+        action.call(target, 0, param);
+    }
+
+    @Override
+    public <T> void set(T target, Int2DAction<T> action, int primaryParam,
+            int secondaryParam) {
+        action.call(target, primaryParam, secondaryParam);
+    }
+
+    @Override
+    public int getPrimarySize(View view) {
+        return view.getWidth();
+    }
+
+    @Override
+    public float getPrimarySize(RectF rect) {
+        return rect.width();
+    }
+
+    @Override
+    public float getStart(RectF rect) {
+        return rect.left;
+    }
+
+    @Override
+    public float getEnd(RectF rect) {
+        return rect.right;
+    }
+
+    @Override
+    public int getClearAllSidePadding(View view, boolean isRtl) {
+        return (isRtl ? view.getPaddingRight() : - view.getPaddingLeft()) / 2;
+    }
+
+    @Override
+    public int getSecondaryDimension(View view) {
+        return view.getHeight();
+    }
+
+    @Override
+    public FloatProperty<View> getPrimaryViewTranslate() {
+        return VIEW_TRANSLATE_X;
+    }
+
+    @Override
+    public FloatProperty<View> getSecondaryViewTranslate() {
+        return VIEW_TRANSLATE_Y;
+    }
+
+    @Override
+    public float getDegreesRotated() {
+        return 0;
+    }
+
+    @Override
+    public int getRotation() {
+        return Surface.ROTATION_0;
+    }
+
+    @Override
+    public void setPrimaryScale(View view, float scale) {
+        view.setScaleX(scale);
+    }
+
+    @Override
+    public void setSecondaryScale(View view, float scale) {
+        view.setScaleY(scale);
+    }
+
+    public int getSecondaryTranslationDirectionFactor() {
+        return -1;
+    }
+
+    @Override
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
+        if (deviceProfile.isLeftRightSplit && stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+            return -1;
+        } else {
+            return 1;
+        }
+    }
+
+    @Override
+    public float getTaskMenuX(float x, View thumbnailView,
+            DeviceProfile deviceProfile, float taskInsetMargin, View taskViewIcon) {
+        if (enableOverviewIconMenu()) {
+            if (thumbnailView.getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
+                return x + taskInsetMargin - taskViewIcon.getHeight() - (taskInsetMargin / 2f);
+            }
+            return x + taskInsetMargin;
+        } else if (deviceProfile.isLandscape) {
+            return x + taskInsetMargin
+                    + (thumbnailView.getMeasuredWidth() - thumbnailView.getMeasuredHeight()) / 2f;
+        } else {
+            return x + taskInsetMargin;
+        }
+    }
+
+    @Override
+    public float getTaskMenuY(float y, View thumbnailView, int stagePosition,
+            View taskMenuView, float taskInsetMargin, View taskViewIcon) {
+        if (enableOverviewIconMenu()) {
+            return y;
+        }
+        return y + taskInsetMargin;
+    }
+
+    @Override
+    public int getTaskMenuWidth(View thumbnailView, DeviceProfile deviceProfile,
+            @StagePosition int stagePosition) {
+        if (enableOverviewIconMenu()) {
+            return thumbnailView.getResources().getDimensionPixelSize(
+                    R.dimen.task_thumbnail_icon_menu_max_width);
+        }
+        int padding = thumbnailView.getResources()
+                .getDimensionPixelSize(R.dimen.task_menu_edge_padding);
+        return (deviceProfile.isLandscape && !deviceProfile.isTablet
+                ? thumbnailView.getMeasuredHeight()
+                : thumbnailView.getMeasuredWidth()) - (2 * padding);
+    }
+
+    @Override
+    public void setTaskOptionsMenuLayoutOrientation(DeviceProfile deviceProfile,
+            LinearLayout taskMenuLayout, int dividerSpacing,
+            ShapeDrawable dividerDrawable) {
+        taskMenuLayout.setOrientation(LinearLayout.VERTICAL);
+        dividerDrawable.setIntrinsicHeight(dividerSpacing);
+        taskMenuLayout.setDividerDrawable(dividerDrawable);
+    }
+
+    @Override
+    public void setLayoutParamsForTaskMenuOptionItem(LinearLayout.LayoutParams lp,
+            LinearLayout viewGroup, DeviceProfile deviceProfile) {
+        viewGroup.setOrientation(LinearLayout.HORIZONTAL);
+        lp.width = LinearLayout.LayoutParams.MATCH_PARENT;
+        lp.height = WRAP_CONTENT;
+    }
+
+    @Override
+    public Pair<Float, Float> getDwbLayoutTranslations(int taskViewWidth,
+            int taskViewHeight, SplitBounds splitBounds, DeviceProfile deviceProfile,
+            View[] thumbnailViews, int desiredTaskId, View banner) {
+        float translationX = 0;
+        float translationY = 0;
+        FrameLayout.LayoutParams bannerParams = (FrameLayout.LayoutParams) banner.getLayoutParams();
+        banner.setPivotX(0);
+        banner.setPivotY(0);
+        banner.setRotation(getDegreesRotated());
+        if (splitBounds == null) {
+            // Single, fullscreen case
+            bannerParams.width = MATCH_PARENT;
+            bannerParams.gravity = BOTTOM | CENTER_HORIZONTAL;
+            return new Pair<>(translationX, translationY);
+        }
+
+        bannerParams.gravity = BOTTOM | ((deviceProfile.isLandscape) ? START : CENTER_HORIZONTAL);
+
+        // Set correct width
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            bannerParams.width = thumbnailViews[0].getMeasuredWidth();
+        } else {
+            bannerParams.width = thumbnailViews[1].getMeasuredWidth();
+        }
+
+        // Set translations
+        if (deviceProfile.isLeftRightSplit) {
+            if (desiredTaskId == splitBounds.rightBottomTaskId) {
+                float leftTopTaskPercent = splitBounds.appsStackedVertically
+                        ? splitBounds.topTaskPercent
+                        : splitBounds.leftTaskPercent;
+                float dividerThicknessPercent = splitBounds.appsStackedVertically
+                        ? splitBounds.dividerHeightPercent
+                        : splitBounds.dividerWidthPercent;
+                translationX = ((taskViewWidth * leftTopTaskPercent)
+                        + (taskViewWidth * dividerThicknessPercent));
+            }
+        } else {
+            if (desiredTaskId == splitBounds.leftTopTaskId) {
+                FrameLayout.LayoutParams snapshotParams =
+                        (FrameLayout.LayoutParams) thumbnailViews[0]
+                                .getLayoutParams();
+                float bottomRightTaskPlusDividerPercent = splitBounds.appsStackedVertically
+                        ? (1f - splitBounds.topTaskPercent)
+                        : (1f - splitBounds.leftTaskPercent);
+                translationY = -((taskViewHeight - snapshotParams.topMargin)
+                        * bottomRightTaskPlusDividerPercent);
+            }
+        }
+        return new Pair<>(translationX, translationY);
+    }
+
+    /* ---------- The following are only used by TaskViewTouchHandler. ---------- */
+
+    @Override
+    public SingleAxisSwipeDetector.Direction getUpDownSwipeDirection() {
+        return VERTICAL;
+    }
+
+    @Override
+    public int getUpDirection(boolean isRtl) {
+        // Ignore rtl since it only affects X value displacement, Y displacement doesn't change
+        return SingleAxisSwipeDetector.DIRECTION_POSITIVE;
+    }
+
+    @Override
+    public boolean isGoingUp(float displacement, boolean isRtl) {
+        // Ignore rtl since it only affects X value displacement, Y displacement doesn't change
+        return displacement < 0;
+    }
+
+    @Override
+    public int getTaskDragDisplacementFactor(boolean isRtl) {
+        // Ignore rtl since it only affects X value displacement, Y displacement doesn't change
+        return 1;
+    }
+
+    /* -------------------- */
+    @Override
+    public int getDistanceToBottomOfRect(DeviceProfile dp, Rect rect) {
+        return dp.heightPx - rect.bottom;
+    }
+
+    @Override
+    public List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp) {
+        if (dp.isTablet) {
+            return Utilities.getSplitPositionOptions(dp);
+        }
+
+        List<SplitPositionOption> options = new ArrayList<>();
+        if (dp.isSeascape()) {
+            options.add(new SplitPositionOption(
+                    R.drawable.ic_split_horizontal, R.string.recent_task_option_split_screen,
+                    STAGE_POSITION_BOTTOM_OR_RIGHT, STAGE_TYPE_MAIN));
+        } else if (dp.isLeftRightSplit) {
+            options.add(new SplitPositionOption(
+                    R.drawable.ic_split_horizontal, R.string.recent_task_option_split_screen,
+                    STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
+        } else {
+            // Only add top option
+            options.add(new SplitPositionOption(
+                    R.drawable.ic_split_vertical, R.string.recent_task_option_split_screen,
+                    STAGE_POSITION_TOP_OR_LEFT, STAGE_TYPE_MAIN));
+        }
+        return options;
+    }
+
+    @Override
+    public void getInitialSplitPlaceholderBounds(int placeholderHeight, int placeholderInset,
+            DeviceProfile dp, @StagePosition int stagePosition, Rect out) {
+        int screenWidth = dp.widthPx;
+        int screenHeight = dp.heightPx;
+        boolean pinToRight = stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+        int insetSizeAdjustment = getPlaceholderSizeAdjustment(dp, pinToRight);
+
+        out.set(0, 0, screenWidth, placeholderHeight + insetSizeAdjustment);
+        if (!dp.isLeftRightSplit) {
+            // portrait, phone or tablet - spans width of screen, nothing else to do
+            out.inset(placeholderInset, 0);
+
+            // Adjust the top to account for content off screen. This will help to animate the view
+            // in with rounded corners.
+            int totalHeight = (int) (1.0f * screenHeight / 2 * (screenWidth - 2 * placeholderInset)
+                    / screenWidth);
+            out.top -= (totalHeight - placeholderHeight);
+            return;
+        }
+
+        // Now we rotate the portrait rect depending on what side we want pinned
+
+        float postRotateScale = (float) screenHeight / screenWidth;
+        mTmpMatrix.reset();
+        mTmpMatrix.postRotate(pinToRight ? 90 : 270);
+        mTmpMatrix.postTranslate(pinToRight ? screenWidth : 0, pinToRight ? 0 : screenWidth);
+        // The placeholder height stays constant after rotation, so we don't change width scale
+        mTmpMatrix.postScale(1, postRotateScale);
+
+        mTmpRectF.set(out);
+        mTmpMatrix.mapRect(mTmpRectF);
+        mTmpRectF.inset(0, placeholderInset);
+        mTmpRectF.roundOut(out);
+
+        // Adjust the top to account for content off screen. This will help to animate the view in
+        // with rounded corners.
+        int totalWidth = (int) (1.0f * screenWidth / 2 * (screenHeight - 2 * placeholderInset)
+                / screenHeight);
+        int width = out.width();
+        if (pinToRight) {
+            out.right += totalWidth - width;
+        } else {
+            out.left -= totalWidth - width;
+        }
+    }
+
+    @Override
+    public void updateSplitIconParams(View out, float onScreenRectCenterX,
+            float onScreenRectCenterY, float fullscreenScaleX, float fullscreenScaleY,
+            int drawableWidth, int drawableHeight, DeviceProfile dp,
+            @StagePosition int stagePosition) {
+        boolean pinToRight = stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+        float insetAdjustment = getPlaceholderSizeAdjustment(dp, pinToRight) / 2f;
+        if (!dp.isLeftRightSplit) {
+            out.setX(onScreenRectCenterX / fullscreenScaleX
+                    - 1.0f * drawableWidth / 2);
+            out.setY((onScreenRectCenterY + insetAdjustment) / fullscreenScaleY
+                    - 1.0f * drawableHeight / 2);
+        } else {
+            if (pinToRight) {
+                out.setX((onScreenRectCenterX - insetAdjustment) / fullscreenScaleX
+                        - 1.0f * drawableWidth / 2);
+            } else {
+                out.setX((onScreenRectCenterX + insetAdjustment) / fullscreenScaleX
+                        - 1.0f * drawableWidth / 2);
+            }
+            out.setY(onScreenRectCenterY / fullscreenScaleY
+                    - 1.0f * drawableHeight / 2);
+        }
+    }
+
+    /**
+     * The split placeholder comes with a default inset to buffer the icon from the top of the
+     * screen. But if the device already has a large inset (from cutouts etc), use that instead.
+     */
+    private int getPlaceholderSizeAdjustment(DeviceProfile dp, boolean pinToRight) {
+        int insetThickness;
+        if (!dp.isLandscape) {
+            insetThickness = dp.getInsets().top;
+        } else {
+            insetThickness = pinToRight ? dp.getInsets().right : dp.getInsets().left;
+        }
+        return Math.max(insetThickness - dp.splitPlaceholderInset, 0);
+    }
+
+    @Override
+    public void setSplitInstructionsParams(View out, DeviceProfile dp, int splitInstructionsHeight,
+            int splitInstructionsWidth) {
+        out.setPivotX(0);
+        out.setPivotY(splitInstructionsHeight);
+        out.setRotation(getDegreesRotated());
+        int distanceToEdge;
+        if (dp.isPhone) {
+            if (dp.isLandscape) {
+                distanceToEdge = out.getResources().getDimensionPixelSize(
+                        R.dimen.split_instructions_bottom_margin_phone_landscape);
+            } else {
+                distanceToEdge = out.getResources().getDimensionPixelSize(
+                        R.dimen.split_instructions_bottom_margin_phone_portrait);
+            }
+        } else {
+            distanceToEdge = dp.getOverviewActionsClaimedSpaceBelow();
+        }
+
+        // Center the view in case of unbalanced insets on left or right of screen
+        int insetCorrectionX = (dp.getInsets().right - dp.getInsets().left) / 2;
+        // Adjust for any insets on the bottom edge
+        int insetCorrectionY = dp.getInsets().bottom;
+        out.setTranslationX(insetCorrectionX);
+        out.setTranslationY(-distanceToEdge + insetCorrectionY);
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) out.getLayoutParams();
+        lp.gravity = CENTER_HORIZONTAL | BOTTOM;
+        out.setLayoutParams(lp);
+    }
+
+    @Override
+    public void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
+            @StagePosition int stagePosition, Rect out1, Rect out2) {
+        int screenHeight = dp.heightPx;
+        int screenWidth = dp.widthPx;
+        out1.set(0, 0, screenWidth, screenHeight / 2 - splitDividerSize);
+        out2.set(0, screenHeight / 2 + splitDividerSize, screenWidth, screenHeight);
+        if (!dp.isLeftRightSplit) {
+            // Portrait - the window bounds are always top and bottom half
+            return;
+        }
+
+        // Now we rotate the portrait rect depending on what side we want pinned
+        boolean pinToRight = stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT;
+        float postRotateScale = (float) screenHeight / screenWidth;
+
+        mTmpMatrix.reset();
+        mTmpMatrix.postRotate(pinToRight ? 90 : 270);
+        mTmpMatrix.postTranslate(pinToRight ? screenHeight : 0, pinToRight ? 0 : screenWidth);
+        mTmpMatrix.postScale(1 / postRotateScale, postRotateScale);
+
+        mTmpRectF.set(out1);
+        mTmpMatrix.mapRect(mTmpRectF);
+        mTmpRectF.roundOut(out1);
+
+        mTmpRectF.set(out2);
+        mTmpMatrix.mapRect(mTmpRectF);
+        mTmpRectF.roundOut(out2);
+    }
+
+    @Override
+    public void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect,
+            SplitBounds splitInfo, int desiredStagePosition) {
+        float topLeftTaskPercent = splitInfo.appsStackedVertically
+                ? splitInfo.topTaskPercent
+                : splitInfo.leftTaskPercent;
+        float dividerBarPercent = splitInfo.appsStackedVertically
+                ? splitInfo.dividerHeightPercent
+                : splitInfo.dividerWidthPercent;
+
+        int taskbarHeight = dp.isTransientTaskbar ? 0 : dp.taskbarHeight;
+        float scale = (float) outRect.height() / (dp.availableHeightPx - taskbarHeight);
+        float topTaskHeight = dp.availableHeightPx * topLeftTaskPercent;
+        float scaledTopTaskHeight = topTaskHeight * scale;
+        float dividerHeight = dp.availableHeightPx * dividerBarPercent;
+        float scaledDividerHeight = dividerHeight * scale;
+
+        if (desiredStagePosition == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
+            if (dp.isLeftRightSplit) {
+                outRect.right = outRect.left + Math.round(outRect.width() * topLeftTaskPercent);
+            } else {
+                outRect.bottom = Math.round(outRect.top + scaledTopTaskHeight);
+            }
+        } else {
+            if (dp.isLeftRightSplit) {
+                outRect.left += Math.round(outRect.width()
+                        * (topLeftTaskPercent + dividerBarPercent));
+            } else {
+                outRect.top += Math.round(scaledTopTaskHeight + scaledDividerHeight);
+            }
+        }
+    }
+
+    @Override
+    public void measureGroupedTaskViewThumbnailBounds(View primarySnapshot, View secondarySnapshot,
+            int parentWidth, int parentHeight, SplitBounds splitBoundsConfig,
+            DeviceProfile dp, boolean isRtl) {
+        int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
+        int totalThumbnailHeight = parentHeight - spaceAboveSnapshot;
+        float dividerScale = splitBoundsConfig.appsStackedVertically
+                ? splitBoundsConfig.dividerHeightPercent
+                : splitBoundsConfig.dividerWidthPercent;
+        int primarySnapshotHeight;
+        int primarySnapshotWidth;
+        int secondarySnapshotHeight;
+        int secondarySnapshotWidth;
+        float taskPercent = splitBoundsConfig.appsStackedVertically ?
+                splitBoundsConfig.topTaskPercent : splitBoundsConfig.leftTaskPercent;
+        if (dp.isLeftRightSplit) {
+            int scaledDividerBar = Math.round(parentWidth * dividerScale);
+            primarySnapshotHeight = totalThumbnailHeight;
+            primarySnapshotWidth = Math.round(parentWidth * taskPercent);
+
+            secondarySnapshotHeight = totalThumbnailHeight;
+            secondarySnapshotWidth = parentWidth - primarySnapshotWidth - scaledDividerBar;
+            if (isRtl) {
+                int translationX = secondarySnapshotWidth + scaledDividerBar;
+                primarySnapshot.setTranslationX(-translationX);
+                secondarySnapshot.setTranslationX(0);
+            } else {
+                int translationX = primarySnapshotWidth + scaledDividerBar;
+                secondarySnapshot.setTranslationX(translationX);
+                primarySnapshot.setTranslationX(0);
+            }
+            secondarySnapshot.setTranslationY(spaceAboveSnapshot);
+
+            // Reset unused translations
+            primarySnapshot.setTranslationY(0);
+        } else {
+            int taskbarHeight = dp.isTransientTaskbar ? 0 : dp.taskbarHeight;
+            float scale = (float) totalThumbnailHeight / (dp.availableHeightPx - taskbarHeight);
+            float topTaskHeight = dp.availableHeightPx * taskPercent;
+            float finalDividerHeight = Math.round(totalThumbnailHeight * dividerScale);
+            float scaledTopTaskHeight = topTaskHeight * scale;
+            primarySnapshotWidth = parentWidth;
+            primarySnapshotHeight = Math.round(scaledTopTaskHeight);
+
+            secondarySnapshotWidth = parentWidth;
+            secondarySnapshotHeight = Math.round(totalThumbnailHeight - primarySnapshotHeight
+                    - finalDividerHeight);
+            float translationY = primarySnapshotHeight + spaceAboveSnapshot + finalDividerHeight;
+            secondarySnapshot.setTranslationY(translationY);
+
+            FrameLayout.LayoutParams primaryParams =
+                    (FrameLayout.LayoutParams) primarySnapshot.getLayoutParams();
+            FrameLayout.LayoutParams secondaryParams =
+                    (FrameLayout.LayoutParams) secondarySnapshot.getLayoutParams();
+            secondaryParams.topMargin = 0;
+            primaryParams.topMargin = spaceAboveSnapshot;
+
+            // Reset unused translations
+            primarySnapshot.setTranslationY(0);
+            secondarySnapshot.setTranslationX(0);
+            primarySnapshot.setTranslationX(0);
+        }
+        primarySnapshot.measure(
+                View.MeasureSpec.makeMeasureSpec(primarySnapshotWidth, View.MeasureSpec.EXACTLY),
+                View.MeasureSpec.makeMeasureSpec(primarySnapshotHeight, View.MeasureSpec.EXACTLY));
+        secondarySnapshot.measure(
+                View.MeasureSpec.makeMeasureSpec(secondarySnapshotWidth, View.MeasureSpec.EXACTLY),
+                View.MeasureSpec.makeMeasureSpec(secondarySnapshotHeight,
+                        View.MeasureSpec.EXACTLY));
+        primarySnapshot.setScaleX(1);
+        secondarySnapshot.setScaleX(1);
+        primarySnapshot.setScaleY(1);
+        secondarySnapshot.setScaleY(1);
+    }
+
+    @Override
+    public void setTaskIconParams(FrameLayout.LayoutParams iconParams, int taskIconMargin,
+            int taskIconHeight, int thumbnailTopMargin, boolean isRtl) {
+        if (enableOverviewIconMenu()) {
+            iconParams.setMarginStart(taskIconMargin);
+            iconParams.gravity = Gravity.START | Gravity.CENTER_VERTICAL;
+            iconParams.topMargin = 0;
+            return;
+        }
+        iconParams.gravity = TOP | CENTER_HORIZONTAL;
+        // Reset margins, since they may have been set on rotation
+        iconParams.leftMargin = iconParams.rightMargin = 0;
+        iconParams.topMargin = iconParams.bottomMargin = 0;
+    }
+
+    @Override
+    public void setIconAppChipMenuParams(IconAppChipView iconAppChipView,
+            FrameLayout.LayoutParams iconMenuParams, int iconMenuMargin, int thumbnailTopMargin) {
+        iconMenuParams.gravity = TOP | START;
+        iconMenuParams.setMarginStart(iconMenuMargin);
+        iconMenuParams.topMargin = thumbnailTopMargin;
+        iconMenuParams.bottomMargin = 0;
+        iconMenuParams.setMarginEnd(0);
+
+        iconAppChipView.setPivotX(0);
+        iconAppChipView.setPivotY(0);
+        iconAppChipView.setTranslationY(0);
+        iconAppChipView.setRotation(getDegreesRotated());
+    }
+
+    @Override
+    public void setSplitIconParams(View primaryIconView, View secondaryIconView,
+            int taskIconHeight, int primarySnapshotWidth, int primarySnapshotHeight,
+            int groupedTaskViewHeight, int groupedTaskViewWidth, boolean isRtl,
+            DeviceProfile deviceProfile, SplitBounds splitConfig) {
+        FrameLayout.LayoutParams primaryIconParams =
+                (FrameLayout.LayoutParams) primaryIconView.getLayoutParams();
+        FrameLayout.LayoutParams secondaryIconParams = enableOverviewIconMenu()
+                ? (FrameLayout.LayoutParams) secondaryIconView.getLayoutParams()
+                : new FrameLayout.LayoutParams(primaryIconParams);
+
+        if (enableOverviewIconMenu()) {
+            primaryIconParams.gravity = TOP | START;
+            secondaryIconParams.gravity = TOP | START;
+            secondaryIconParams.topMargin = primaryIconParams.topMargin;
+            secondaryIconParams.setMarginStart(primaryIconParams.getMarginStart());
+            if (deviceProfile.isLeftRightSplit) {
+                if (isRtl) {
+                    int secondarySnapshotWidth = groupedTaskViewWidth - primarySnapshotWidth;
+                    primaryIconView.setTranslationX(-secondarySnapshotWidth);
+                } else {
+                    secondaryIconView.setTranslationX(primarySnapshotWidth);
+                }
+            } else {
+                primaryIconView.setTranslationX(0);
+                secondaryIconView.setTranslationX(0);
+                int dividerThickness = Math.min(splitConfig.visualDividerBounds.width(),
+                        splitConfig.visualDividerBounds.height());
+                secondaryIconView.setTranslationY(
+                        primarySnapshotHeight + (deviceProfile.isTablet ? 0 : dividerThickness));
+            }
+        } else if (deviceProfile.isLeftRightSplit) {
+            // We calculate the "midpoint" of the thumbnail area, and place the icons there.
+            // This is the place where the thumbnail area splits by default, in a near-50/50 split.
+            // It is usually not exactly 50/50, due to insets/screen cutouts.
+            int fullscreenInsetThickness = deviceProfile.isSeascape()
+                    ? deviceProfile.getInsets().right
+                    : deviceProfile.getInsets().left;
+            int fullscreenMidpointFromBottom = ((deviceProfile.widthPx
+                    - fullscreenInsetThickness) / 2);
+            float midpointFromEndPct = (float) fullscreenMidpointFromBottom
+                    / deviceProfile.widthPx;
+            float insetPct = (float) fullscreenInsetThickness / deviceProfile.widthPx;
+            int spaceAboveSnapshots = 0;
+            int overviewThumbnailAreaThickness = groupedTaskViewWidth - spaceAboveSnapshots;
+            int bottomToMidpointOffset = (int) (overviewThumbnailAreaThickness
+                    * midpointFromEndPct);
+            int insetOffset = (int) (overviewThumbnailAreaThickness * insetPct);
+
+            if (deviceProfile.isSeascape()) {
+                primaryIconParams.gravity = TOP | (isRtl ? END : START);
+                secondaryIconParams.gravity = TOP | (isRtl ? END : START);
+                if (splitConfig.initiatedFromSeascape) {
+                    // if the split was initiated from seascape,
+                    // the task on the right (secondary) is slightly larger
+                    primaryIconView.setTranslationX(bottomToMidpointOffset - taskIconHeight);
+                    secondaryIconView.setTranslationX(bottomToMidpointOffset);
+                } else {
+                    // if not,
+                    // the task on the left (primary) is slightly larger
+                    primaryIconView.setTranslationX(bottomToMidpointOffset + insetOffset
+                            - taskIconHeight);
+                    secondaryIconView.setTranslationX(bottomToMidpointOffset + insetOffset);
+                }
+            } else {
+                primaryIconParams.gravity = TOP | (isRtl ? START : END);
+                secondaryIconParams.gravity = TOP | (isRtl ? START : END);
+                if (!splitConfig.initiatedFromSeascape) {
+                    // if the split was initiated from landscape,
+                    // the task on the left (primary) is slightly larger
+                    primaryIconView.setTranslationX(-bottomToMidpointOffset);
+                    secondaryIconView.setTranslationX(-bottomToMidpointOffset + taskIconHeight);
+                } else {
+                    // if not,
+                    // the task on the right (secondary) is slightly larger
+                    primaryIconView.setTranslationX(-bottomToMidpointOffset - insetOffset);
+                    secondaryIconView.setTranslationX(-bottomToMidpointOffset - insetOffset
+                            + taskIconHeight);
+                }
+            }
+        } else {
+            primaryIconParams.gravity = TOP | CENTER_HORIZONTAL;
+            // shifts icon half a width left (height is used here since icons are square)
+            primaryIconView.setTranslationX(-(taskIconHeight / 2f));
+            secondaryIconParams.gravity = TOP | CENTER_HORIZONTAL;
+            secondaryIconView.setTranslationX(taskIconHeight / 2f);
+        }
+        if (!enableOverviewIconMenu()) {
+            primaryIconView.setTranslationY(0);
+            secondaryIconView.setTranslationY(0);
+        }
+
+        primaryIconView.setLayoutParams(primaryIconParams);
+        secondaryIconView.setLayoutParams(secondaryIconParams);
+    }
+
+    @Override
+    public int getDefaultSplitPosition(DeviceProfile deviceProfile) {
+        if (!deviceProfile.isTablet) {
+            throw new IllegalStateException("Default position available only for large screens");
+        }
+        if (deviceProfile.isLeftRightSplit) {
+            return STAGE_POSITION_BOTTOM_OR_RIGHT;
+        } else {
+            return STAGE_POSITION_TOP_OR_LEFT;
+        }
+    }
+
+    @Override
+    public Pair<FloatProperty, FloatProperty> getSplitSelectTaskOffset(FloatProperty primary,
+            FloatProperty secondary, DeviceProfile deviceProfile) {
+        if (deviceProfile.isLeftRightSplit) { // or seascape
+            return new Pair<>(primary, secondary);
+        } else {
+            return new Pair<>(secondary, primary);
+        }
+    }
+
+    @Override
+    public float getFloatingTaskOffscreenTranslationTarget(View floatingTask, RectF onScreenRect,
+            @StagePosition int stagePosition, DeviceProfile dp) {
+        if (dp.isLeftRightSplit) {
+            float currentTranslationX = floatingTask.getTranslationX();
+            return stagePosition == STAGE_POSITION_TOP_OR_LEFT
+                    ? currentTranslationX - onScreenRect.width()
+                    : currentTranslationX + onScreenRect.width();
+        } else {
+            float currentTranslationY = floatingTask.getTranslationY();
+            return currentTranslationY - onScreenRect.height();
+        }
+    }
+
+    @Override
+    public void setFloatingTaskPrimaryTranslation(View floatingTask, float translation,
+            DeviceProfile dp) {
+        if (dp.isLeftRightSplit) {
+            floatingTask.setTranslationX(translation);
+        } else {
+            floatingTask.setTranslationY(translation);
+        }
+
+    }
+
+    @Override
+    public Float getFloatingTaskPrimaryTranslation(View floatingTask, DeviceProfile dp) {
+        return dp.isLeftRightSplit
+                ? floatingTask.getTranslationX()
+                : floatingTask.getTranslationY();
+    }
+}

quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.java

@@ -0,0 +1,241 @@
+/*
+ * Copyright (C) 2024 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.quickstep.orientation;
+
+
+import android.graphics.PointF;
+import android.graphics.Rect;
+import android.graphics.RectF;
+import android.graphics.drawable.ShapeDrawable;
+import android.util.FloatProperty;
+import android.util.Pair;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.launcher3.touch.SingleAxisSwipeDetector;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitBounds;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition;
+import com.android.quickstep.views.IconAppChipView;
+
+import java.util.List;
+
+/**
+ * Abstraction layer to separate horizontal and vertical specific implementations
+ * for {@link com.android.quickstep.views.RecentsView}. Majority of these implementations are
+ * (should be) as simple as choosing the correct X and Y analogous methods.
+ */
+public interface RecentsPagedOrientationHandler extends PagedOrientationHandler {
+
+    RecentsPagedOrientationHandler PORTRAIT = new PortraitPagedViewHandler();
+    RecentsPagedOrientationHandler LANDSCAPE = new LandscapePagedViewHandler();
+    RecentsPagedOrientationHandler SEASCAPE = new SeascapePagedViewHandler();
+
+    <T> void setSecondary(T target, Float2DAction<T> action, float param);
+    <T> void set(T target, Int2DAction<T> action, int primaryParam, int secondaryParam);
+    int getPrimarySize(View view);
+    float getPrimarySize(RectF rect);
+    int getSecondaryTranslationDirectionFactor();
+    float getDegreesRotated();
+    int getRotation();
+    boolean isLayoutNaturalToLauncher();
+
+    <T> T getPrimaryValue(T x, T y);
+    <T> T getSecondaryValue(T x, T y);
+    void setPrimaryScale(View view, float scale);
+    void setSecondaryScale(View view, float scale);
+    float getStart(RectF rect);
+    float getEnd(RectF rect);
+    int getClearAllSidePadding(View view, boolean isRtl);
+    int getSecondaryDimension(View view);
+    FloatProperty<View> getPrimaryViewTranslate();
+    FloatProperty<View> getSecondaryViewTranslate();
+    int getSplitTranslationDirectionFactor(@StagePosition int stagePosition,
+            DeviceProfile deviceProfile);
+    Pair<FloatProperty, FloatProperty> getSplitSelectTaskOffset(FloatProperty primary,
+            FloatProperty secondary, DeviceProfile deviceProfile);
+    int getDistanceToBottomOfRect(DeviceProfile dp, Rect rect);
+    List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp);
+    /**
+     * @param placeholderHeight height of placeholder view in portrait, width in landscape
+     */
+    void getInitialSplitPlaceholderBounds(int placeholderHeight, int placeholderInset,
+            DeviceProfile dp, @StagePosition int stagePosition, Rect out);
+
+    /**
+     * Centers an icon in the split staging area, accounting for insets.
+     * @param out The icon that needs to be centered.
+     * @param onScreenRectCenterX The x-center of the on-screen staging area (most of the Rect is
+     *                        offscreen).
+     * @param onScreenRectCenterY The y-center of the on-screen staging area (most of the Rect is
+     *                        offscreen).
+     * @param fullscreenScaleX A x-scaling factor used to convert coordinates back into pixels.
+     * @param fullscreenScaleY A y-scaling factor used to convert coordinates back into pixels.
+     * @param drawableWidth The icon's drawable (final) width.
+     * @param drawableHeight The icon's drawable (final) height.
+     * @param dp The device profile, used to report rotation and hardware insets.
+     * @param stagePosition 0 if the staging area is pinned to top/left, 1 for bottom/right.
+     */
+    void updateSplitIconParams(View out, float onScreenRectCenterX,
+            float onScreenRectCenterY, float fullscreenScaleX, float fullscreenScaleY,
+            int drawableWidth, int drawableHeight, DeviceProfile dp,
+            @StagePosition int stagePosition);
+
+    /**
+     * Sets positioning and rotation for a SplitInstructionsView.
+     * @param out The SplitInstructionsView that needs to be positioned.
+     * @param dp The device profile, used to report rotation and device type.
+     * @param splitInstructionsHeight The SplitInstructionView's height.
+     * @param splitInstructionsWidth  The SplitInstructionView's width.
+     */
+    void setSplitInstructionsParams(View out, DeviceProfile dp, int splitInstructionsHeight,
+            int splitInstructionsWidth);
+
+    /**
+     * @param splitDividerSize height of split screen drag handle in portrait, width in landscape
+     * @param stagePosition the split position option (top/left, bottom/right) of the first
+     *                           task selected for entering split
+     * @param out1 the bounds for where the first selected app will be
+     * @param out2 the bounds for where the second selected app will be, complimentary to
+     *             {@param out1} based on {@param initialSplitOption}
+     */
+    void getFinalSplitPlaceholderBounds(int splitDividerSize, DeviceProfile dp,
+            @StagePosition int stagePosition, Rect out1, Rect out2);
+
+    int getDefaultSplitPosition(DeviceProfile deviceProfile);
+
+    /**
+     * @param outRect This is expected to be the rect that has the dimensions for a non-split,
+     *                fullscreen task in overview. This will directly be modified.
+     * @param desiredStagePosition Which stage position (topLeft/rightBottom) we want to resize
+     *                           outRect for
+     */
+    void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect, SplitBounds splitInfo,
+            @SplitConfigurationOptions.StagePosition int desiredStagePosition);
+
+    void measureGroupedTaskViewThumbnailBounds(View primarySnapshot, View secondarySnapshot,
+            int parentWidth, int parentHeight,
+            SplitBounds splitBoundsConfig, DeviceProfile dp, boolean isRtl);
+
+    // Overview TaskMenuView methods
+    void setTaskIconParams(FrameLayout.LayoutParams iconParams,
+            int taskIconMargin, int taskIconHeight, int thumbnailTopMargin, boolean isRtl);
+
+    void setIconAppChipMenuParams(IconAppChipView iconAppChipView,
+            FrameLayout.LayoutParams iconMenuParams,
+            int iconMenuMargin, int thumbnailTopMargin);
+    void setSplitIconParams(View primaryIconView, View secondaryIconView,
+            int taskIconHeight, int primarySnapshotWidth, int primarySnapshotHeight,
+            int groupedTaskViewHeight, int groupedTaskViewWidth, boolean isRtl,
+            DeviceProfile deviceProfile, SplitBounds splitConfig);
+
+    /*
+     * The following two methods try to center the TaskMenuView in landscape by finding the center
+     * of the thumbnail view and then subtracting half of the taskMenu width. In this case, the
+     * taskMenu width is the same size as the thumbnail width (what got set below in
+     * getTaskMenuWidth()), so we directly use that in the calculations.
+     */
+    float getTaskMenuX(float x, View thumbnailView, DeviceProfile deviceProfile,
+            float taskInsetMargin, View taskViewIcon);
+    float getTaskMenuY(float y, View thumbnailView, int stagePosition,
+            View taskMenuView, float taskInsetMargin, View taskViewIcon);
+    int getTaskMenuWidth(View thumbnailView, DeviceProfile deviceProfile,
+            @StagePosition int stagePosition);
+    /**
+     * Sets linear layout orientation for {@link com.android.launcher3.popup.SystemShortcut} items
+     * inside task menu view.
+     */
+    void setTaskOptionsMenuLayoutOrientation(DeviceProfile deviceProfile,
+            LinearLayout taskMenuLayout, int dividerSpacing,
+            ShapeDrawable dividerDrawable);
+    /**
+     * Sets layout param attributes for {@link com.android.launcher3.popup.SystemShortcut} child
+     * views inside task menu view.
+     */
+    void setLayoutParamsForTaskMenuOptionItem(LinearLayout.LayoutParams lp,
+            LinearLayout viewGroup, DeviceProfile deviceProfile);
+
+    /**
+     * Calculates the position where a Digital Wellbeing Banner should be placed on its parent
+     * TaskView.
+     * @return A Pair of Floats representing the proper x and y translations.
+     */
+    Pair<Float, Float> getDwbLayoutTranslations(int taskViewWidth,
+            int taskViewHeight, SplitBounds splitBounds, DeviceProfile deviceProfile,
+            View[] thumbnailViews, int desiredTaskId, View banner);
+
+    // The following are only used by TaskViewTouchHandler.
+    /** @return Either VERTICAL or HORIZONTAL. */
+    SingleAxisSwipeDetector.Direction getUpDownSwipeDirection();
+    /** @return Given {@link #getUpDownSwipeDirection()}, whether POSITIVE or NEGATIVE is up. */
+    int getUpDirection(boolean isRtl);
+    /** @return Whether the displacement is going towards the top of the screen. */
+    boolean isGoingUp(float displacement, boolean isRtl);
+    /** @return Either 1 or -1, a factor to multiply by so the animation goes the correct way. */
+    int getTaskDragDisplacementFactor(boolean isRtl);
+
+    /**
+     * Maps the velocity from the coordinate plane of the foreground app to that
+     * of Launcher's (which now will always be portrait)
+     */
+    void adjustFloatingIconStartVelocity(PointF velocity);
+
+    /**
+     * Ensures that outStartRect left bound is within the DeviceProfile's visual boundaries
+     * @param outStartRect The start rect that will directly be modified
+     */
+    void fixBoundsForHomeAnimStartRect(RectF outStartRect, DeviceProfile deviceProfile);
+
+    /**
+     * Determine the target translation for animating the FloatingTaskView out. This value could
+     * either be an x-coordinate or a y-coordinate, depending on which way the FloatingTaskView was
+     * docked.
+     *
+     * @param floatingTask The FloatingTaskView.
+     * @param onScreenRect The current on-screen dimensions of the FloatingTaskView.
+     * @param stagePosition STAGE_POSITION_TOP_OR_LEFT or STAGE_POSITION_BOTTOM_OR_RIGHT.
+     * @param dp The device profile.
+     * @return A float. When an animation translates the FloatingTaskView to this position, it will
+     * appear to tuck away off the edge of the screen.
+     */
+    float getFloatingTaskOffscreenTranslationTarget(View floatingTask, RectF onScreenRect,
+            @StagePosition int stagePosition, DeviceProfile dp);
+
+    /**
+     * Sets the translation of a FloatingTaskView along its "slide-in/slide-out" axis (could be
+     * either x or y), depending on how the view is oriented.
+     *
+     * @param floatingTask The FloatingTaskView to be translated.
+     * @param translation The target translation value.
+     * @param dp The current device profile.
+     */
+    void setFloatingTaskPrimaryTranslation(View floatingTask, float translation, DeviceProfile dp);
+
+    /**
+     * Gets the translation of a FloatingTaskView along its "slide-in/slide-out" axis (could be
+     * either x or y), depending on how the view is oriented.
+     *
+     * @param floatingTask The FloatingTaskView in question.
+     * @param dp The current device profile.
+     * @return The current translation value.
+     */
+    Float getFloatingTaskPrimaryTranslation(View floatingTask, DeviceProfile dp);
+}

quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.java

@@ -0,0 +1,394 @@
+/*
+ * Copyright (C) 2024 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.quickstep.orientation;
+
+import static android.view.Gravity.BOTTOM;
+import static android.view.Gravity.CENTER_VERTICAL;
+import static android.view.Gravity.END;
+import static android.view.Gravity.RIGHT;
+import static android.view.Gravity.START;
+import static android.view.Gravity.TOP;
+import static android.view.View.LAYOUT_DIRECTION_RTL;
+
+import static com.android.launcher3.Flags.enableOverviewIconMenu;
+import static com.android.launcher3.touch.SingleAxisSwipeDetector.HORIZONTAL;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_BOTTOM_OR_RIGHT;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_POSITION_UNDEFINED;
+import static com.android.launcher3.util.SplitConfigurationOptions.STAGE_TYPE_MAIN;
+
+import android.content.res.Resources;
+import android.graphics.PointF;
+import android.graphics.Rect;
+import android.util.Pair;
+import android.view.Gravity;
+import android.view.Surface;
+import android.view.View;
+import android.widget.FrameLayout;
+
+import com.android.launcher3.DeviceProfile;
+import com.android.launcher3.R;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.touch.SingleAxisSwipeDetector;
+import com.android.launcher3.util.SplitConfigurationOptions;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitBounds;
+import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption;
+import com.android.launcher3.views.BaseDragLayer;
+import com.android.quickstep.views.IconAppChipView;
+
+import java.util.Collections;
+import java.util.List;
+
+public class SeascapePagedViewHandler extends LandscapePagedViewHandler {
+
+    @Override
+    public int getSecondaryTranslationDirectionFactor() {
+        return -1;
+    }
+
+    @Override
+    public int getSplitTranslationDirectionFactor(int stagePosition, DeviceProfile deviceProfile) {
+        if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) {
+            return -1;
+        } else {
+            return 1;
+        }
+    }
+
+    @Override
+    public boolean getRecentsRtlSetting(Resources resources) {
+        return Utilities.isRtl(resources);
+    }
+
+    @Override
+    public float getDegreesRotated() {
+        return 270;
+    }
+
+    @Override
+    public int getRotation() {
+        return Surface.ROTATION_270;
+    }
+
+    @Override
+    public void adjustFloatingIconStartVelocity(PointF velocity) {
+        float oldX = velocity.x;
+        float oldY = velocity.y;
+        velocity.set(oldY, -oldX);
+    }
+
+    @Override
+    public float getTaskMenuX(float x, View thumbnailView,
+            DeviceProfile deviceProfile, float taskInsetMargin, View taskViewIcon) {
+        if (enableOverviewIconMenu()) {
+            return x + (taskViewIcon.getHeight() * 2);
+        }
+        return x + taskInsetMargin;
+    }
+
+    @Override
+    public float getTaskMenuY(float y, View thumbnailView, int stagePosition,
+            View taskMenuView, float taskInsetMargin, View taskViewIcon) {
+        if (enableOverviewIconMenu()) {
+            return y + taskViewIcon.getWidth() + (
+                    thumbnailView.getLayoutDirection() == LAYOUT_DIRECTION_RTL ? taskInsetMargin
+                            / 2f : -taskViewIcon.getHeight());
+        }
+        BaseDragLayer.LayoutParams lp = (BaseDragLayer.LayoutParams) taskMenuView.getLayoutParams();
+        int taskMenuWidth = lp.width;
+        if (stagePosition == STAGE_POSITION_UNDEFINED) {
+            return y + taskInsetMargin
+                    + (thumbnailView.getMeasuredHeight() + taskMenuWidth) / 2f;
+        } else {
+            return y + taskMenuWidth + taskInsetMargin;
+        }
+    }
+
+    @Override
+    public void setSplitTaskSwipeRect(DeviceProfile dp, Rect outRect, SplitBounds splitInfo,
+            int desiredStagePosition) {
+        float topLeftTaskPercent = splitInfo.appsStackedVertically
+                ? splitInfo.topTaskPercent
+                : splitInfo.leftTaskPercent;
+        float dividerBarPercent = splitInfo.appsStackedVertically
+                ? splitInfo.dividerHeightPercent
+                : splitInfo.dividerWidthPercent;
+
+        // In seascape, the primary thumbnail is counterintuitively placed at the physical bottom of
+        // the screen. This is to preserve consistency when the user rotates: From the user's POV,
+        // the primary should always be on the left.
+        if (desiredStagePosition == SplitConfigurationOptions.STAGE_POSITION_TOP_OR_LEFT) {
+            outRect.top += (int) (outRect.height() * ((1 - topLeftTaskPercent)));
+        } else {
+            outRect.bottom -= (int) (outRect.height() * (topLeftTaskPercent + dividerBarPercent));
+        }
+    }
+
+    @Override
+    public Pair<Float, Float> getDwbLayoutTranslations(int taskViewWidth,
+            int taskViewHeight, SplitBounds splitBounds, DeviceProfile deviceProfile,
+            View[] thumbnailViews, int desiredTaskId, View banner) {
+        boolean isRtl = banner.getLayoutDirection() == LAYOUT_DIRECTION_RTL;
+        float translationX = 0;
+        float translationY = 0;
+        FrameLayout.LayoutParams bannerParams = (FrameLayout.LayoutParams) banner.getLayoutParams();
+        banner.setPivotX(0);
+        banner.setPivotY(0);
+        banner.setRotation(getDegreesRotated());
+        translationX = taskViewWidth - banner.getHeight();
+        FrameLayout.LayoutParams snapshotParams =
+                (FrameLayout.LayoutParams) thumbnailViews[0]
+                        .getLayoutParams();
+        bannerParams.gravity = BOTTOM | (isRtl ? END : START);
+
+        if (splitBounds == null) {
+            // Single, fullscreen case
+            bannerParams.width = taskViewHeight - snapshotParams.topMargin;
+            translationY = banner.getHeight();
+            return new Pair<>(translationX, translationY);
+        }
+
+        // Set correct width
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            bannerParams.width = thumbnailViews[0].getMeasuredHeight();
+        } else {
+            bannerParams.width = thumbnailViews[1].getMeasuredHeight();
+        }
+
+        // Set translations
+        if (desiredTaskId == splitBounds.rightBottomTaskId) {
+            translationY = banner.getHeight();
+        }
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            float bottomRightTaskPlusDividerPercent = splitBounds.appsStackedVertically
+                    ? (1f - splitBounds.topTaskPercent)
+                    : (1f - splitBounds.leftTaskPercent);
+            translationY = banner.getHeight()
+                    - ((taskViewHeight - snapshotParams.topMargin)
+                    * bottomRightTaskPlusDividerPercent);
+        }
+        return new Pair<>(translationX, translationY);
+    }
+
+    @Override
+    public int getDistanceToBottomOfRect(DeviceProfile dp, Rect rect) {
+        return dp.widthPx - rect.right;
+    }
+
+    @Override
+    public List<SplitPositionOption> getSplitPositionOptions(DeviceProfile dp) {
+        // Add "right" option which is actually the top
+        return Collections.singletonList(new SplitPositionOption(
+                R.drawable.ic_split_horizontal, R.string.recent_task_option_split_screen,
+                STAGE_POSITION_BOTTOM_OR_RIGHT, STAGE_TYPE_MAIN));
+    }
+
+    @Override
+    public void setSplitInstructionsParams(View out, DeviceProfile dp, int splitInstructionsHeight,
+            int splitInstructionsWidth) {
+        out.setPivotX(0);
+        out.setPivotY(splitInstructionsHeight);
+        out.setRotation(getDegreesRotated());
+        int distanceToEdge = out.getResources().getDimensionPixelSize(
+                R.dimen.split_instructions_bottom_margin_phone_landscape);
+        // Adjust for any insets on the right edge
+        int insetCorrectionX = dp.getInsets().right;
+        // Center the view in case of unbalanced insets on top or bottom of screen
+        int insetCorrectionY = (dp.getInsets().bottom - dp.getInsets().top) / 2;
+        out.setTranslationX(splitInstructionsWidth - distanceToEdge + insetCorrectionX);
+        out.setTranslationY(((-splitInstructionsHeight + splitInstructionsWidth) / 2f)
+                + insetCorrectionY);
+        FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) out.getLayoutParams();
+        // Setting gravity to RIGHT instead of the lint-recommended END because we always want this
+        // view to be screen-right when phone is in seascape, regardless of the RtL setting.
+        lp.gravity = RIGHT | CENTER_VERTICAL;
+        out.setLayoutParams(lp);
+    }
+
+    @Override
+    public void setTaskIconParams(FrameLayout.LayoutParams iconParams,
+            int taskIconMargin, int taskIconHeight, int thumbnailTopMargin, boolean isRtl) {
+        iconParams.rightMargin = 0;
+        iconParams.bottomMargin = 0;
+        if (enableOverviewIconMenu()) {
+            iconParams.setMarginStart(taskIconMargin);
+            iconParams.gravity = Gravity.START | Gravity.CENTER_VERTICAL;
+            iconParams.leftMargin = 0;
+            iconParams.topMargin = 0;
+        } else {
+            iconParams.gravity = (isRtl ? END : START) | CENTER_VERTICAL;
+            iconParams.leftMargin = -taskIconHeight - taskIconMargin / 2;
+            iconParams.topMargin = thumbnailTopMargin / 2;
+        }
+    }
+
+    @Override
+    public void setIconAppChipMenuParams(IconAppChipView iconAppChipView,
+            FrameLayout.LayoutParams iconMenuParams, int iconMenuMargin, int thumbnailTopMargin) {
+        boolean isRtl = iconAppChipView.getLayoutDirection() == LAYOUT_DIRECTION_RTL;
+        iconMenuParams.gravity = (isRtl ? TOP : BOTTOM) | (isRtl ? END : START);
+        iconMenuParams.setMarginStart(0);
+        iconMenuParams.topMargin = isRtl ? iconMenuMargin : 0;
+        iconMenuParams.bottomMargin = 0;
+        iconMenuParams.setMarginEnd(isRtl ? thumbnailTopMargin : 0);
+
+        // Use half menu height to place the pivot within the X/Y center of icon in the menu.
+        float iconCenter = iconAppChipView.getHeight() / 2f;
+        iconAppChipView.setPivotX(isRtl ? iconMenuParams.width / 2f : iconCenter);
+        iconAppChipView.setPivotY(
+                isRtl ? iconMenuParams.width / 2f : iconCenter - iconMenuMargin);
+        iconAppChipView.setTranslationY(0);
+        iconAppChipView.setRotation(getDegreesRotated());
+    }
+
+    @Override
+    public void setSplitIconParams(View primaryIconView, View secondaryIconView,
+            int taskIconHeight, int primarySnapshotWidth, int primarySnapshotHeight,
+            int groupedTaskViewHeight, int groupedTaskViewWidth, boolean isRtl,
+            DeviceProfile deviceProfile, SplitBounds splitConfig) {
+        super.setSplitIconParams(primaryIconView, secondaryIconView, taskIconHeight,
+                primarySnapshotWidth, primarySnapshotHeight, groupedTaskViewHeight,
+                groupedTaskViewWidth, isRtl, deviceProfile, splitConfig);
+        FrameLayout.LayoutParams primaryIconParams =
+                (FrameLayout.LayoutParams) primaryIconView.getLayoutParams();
+        FrameLayout.LayoutParams secondaryIconParams =
+                (FrameLayout.LayoutParams) secondaryIconView.getLayoutParams();
+
+        // We calculate the "midpoint" of the thumbnail area, and place the icons there.
+        // This is the place where the thumbnail area splits by default, in a near-50/50 split.
+        // It is usually not exactly 50/50, due to insets/screen cutouts.
+        int fullscreenInsetThickness = deviceProfile.getInsets().top
+                - deviceProfile.getInsets().bottom;
+        int fullscreenMidpointFromBottom = ((deviceProfile.heightPx
+                - fullscreenInsetThickness) / 2);
+        float midpointFromBottomPct = (float) fullscreenMidpointFromBottom / deviceProfile.heightPx;
+        float insetPct = (float) fullscreenInsetThickness / deviceProfile.heightPx;
+        int spaceAboveSnapshots = deviceProfile.overviewTaskThumbnailTopMarginPx;
+        int overviewThumbnailAreaThickness = groupedTaskViewHeight - spaceAboveSnapshots;
+        int bottomToMidpointOffset = (int) (overviewThumbnailAreaThickness * midpointFromBottomPct);
+        int insetOffset = (int) (overviewThumbnailAreaThickness * insetPct);
+
+        int gravity = (isRtl ? TOP : BOTTOM) | (isRtl ? END : START);
+        primaryIconParams.gravity = gravity;
+        secondaryIconParams.gravity = gravity;
+        primaryIconView.setTranslationX(0);
+        secondaryIconView.setTranslationX(0);
+        if (enableOverviewIconMenu()) {
+            if (isRtl) {
+                primaryIconView.setTranslationY(groupedTaskViewHeight - primarySnapshotHeight);
+                secondaryIconView.setTranslationY(0);
+            } else {
+                secondaryIconView.setTranslationY(-primarySnapshotHeight);
+                primaryIconView.setTranslationY(0);
+            }
+        } else if (splitConfig.initiatedFromSeascape) {
+            // if the split was initiated from seascape,
+            // the task on the right (secondary) is slightly larger
+            if (isRtl) {
+                primaryIconView.setTranslationY(bottomToMidpointOffset - insetOffset
+                        + taskIconHeight);
+                secondaryIconView.setTranslationY(bottomToMidpointOffset - insetOffset);
+            } else {
+                primaryIconView.setTranslationY(-bottomToMidpointOffset - insetOffset
+                        + taskIconHeight);
+                secondaryIconView.setTranslationY(-bottomToMidpointOffset - insetOffset);
+            }
+        } else {
+            // if not,
+            // the task on the left (primary) is slightly larger
+            if (isRtl) {
+                primaryIconView.setTranslationY(bottomToMidpointOffset + taskIconHeight);
+                secondaryIconView.setTranslationY(bottomToMidpointOffset);
+            } else {
+                primaryIconView.setTranslationY(-bottomToMidpointOffset + taskIconHeight);
+                secondaryIconView.setTranslationY(-bottomToMidpointOffset);
+            }
+        }
+
+        primaryIconView.setLayoutParams(primaryIconParams);
+        secondaryIconView.setLayoutParams(secondaryIconParams);
+    }
+
+    @Override
+    public void measureGroupedTaskViewThumbnailBounds(View primarySnapshot, View secondarySnapshot,
+            int parentWidth, int parentHeight, SplitBounds splitBoundsConfig, DeviceProfile dp,
+            boolean isRtl) {
+        FrameLayout.LayoutParams primaryParams =
+                (FrameLayout.LayoutParams) primarySnapshot.getLayoutParams();
+        FrameLayout.LayoutParams secondaryParams =
+                (FrameLayout.LayoutParams) secondarySnapshot.getLayoutParams();
+
+        // Swap the margins that are set in TaskView#setRecentsOrientedState()
+        secondaryParams.topMargin = dp.overviewTaskThumbnailTopMarginPx;
+        primaryParams.topMargin = 0;
+
+        // Measure and layout the thumbnails bottom up, since the primary is on the visual left
+        // (portrait bottom) and secondary is on the right (portrait top)
+        int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
+        int totalThumbnailHeight = parentHeight - spaceAboveSnapshot;
+        int dividerBar = Math.round(totalThumbnailHeight * (splitBoundsConfig.appsStackedVertically
+                ? splitBoundsConfig.dividerHeightPercent
+                : splitBoundsConfig.dividerWidthPercent));
+        int primarySnapshotHeight;
+        int primarySnapshotWidth;
+        int secondarySnapshotHeight;
+        int secondarySnapshotWidth;
+
+        float taskPercent = splitBoundsConfig.appsStackedVertically ?
+                splitBoundsConfig.topTaskPercent : splitBoundsConfig.leftTaskPercent;
+        primarySnapshotWidth = parentWidth;
+        primarySnapshotHeight = (int) (totalThumbnailHeight * (taskPercent));
+
+        secondarySnapshotWidth = parentWidth;
+        secondarySnapshotHeight = totalThumbnailHeight - primarySnapshotHeight - dividerBar;
+        secondarySnapshot.setTranslationY(0);
+        primarySnapshot.setTranslationY(secondarySnapshotHeight + spaceAboveSnapshot + dividerBar);
+
+        primarySnapshot.measure(
+                View.MeasureSpec.makeMeasureSpec(primarySnapshotWidth, View.MeasureSpec.EXACTLY),
+                View.MeasureSpec.makeMeasureSpec(primarySnapshotHeight, View.MeasureSpec.EXACTLY)
+        );
+        secondarySnapshot.measure(
+                View.MeasureSpec.makeMeasureSpec(secondarySnapshotWidth, View.MeasureSpec.EXACTLY),
+                View.MeasureSpec.makeMeasureSpec(secondarySnapshotHeight, View.MeasureSpec.EXACTLY)
+        );
+    }
+
+    /* ---------- The following are only used by TaskViewTouchHandler. ---------- */
+
+    @Override
+    public SingleAxisSwipeDetector.Direction getUpDownSwipeDirection() {
+        return HORIZONTAL;
+    }
+
+    @Override
+    public int getUpDirection(boolean isRtl) {
+        return isRtl ? SingleAxisSwipeDetector.DIRECTION_POSITIVE
+                : SingleAxisSwipeDetector.DIRECTION_NEGATIVE;
+    }
+
+    @Override
+    public boolean isGoingUp(float displacement, boolean isRtl) {
+        return isRtl ? displacement > 0 : displacement < 0;
+    }
+
+    @Override
+    public int getTaskDragDisplacementFactor(boolean isRtl) {
+        return isRtl ? -1 : 1;
+    }
+
+    /* -------------------- */
+}

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

@@ -43,7 +43,7 @@ import com.android.launcher3.statemanager.StateManager;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.states.StateAnimationConfig;
 import com.android.launcher3.touch.AllAppsSwipeController;
-import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.views.RecentsView;
 
 /**
@@ -200,7 +200,7 @@ public class AnimatorControllerWithResistance {
     public static <SCALE, TRANSLATION> PendingAnimation createRecentsResistanceAnim(
             RecentsParams<SCALE, TRANSLATION> params) {
         Rect startRect = new Rect();
-        PagedOrientationHandler orientationHandler = params.recentsOrientedState
+        RecentsPagedOrientationHandler orientationHandler = params.recentsOrientedState
                 .getOrientationHandler();
         params.recentsOrientedState.getActivityInterface()
                 .calculateTaskSize(params.context, params.dp, startRect, orientationHandler);

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

@@ -21,10 +21,10 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import com.android.launcher3.DeviceProfile;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.DisplayController;
 import com.android.launcher3.util.NavigationMode;
 import com.android.quickstep.LauncherActivityInterface;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 
 public class LayoutUtils {
 
@@ -40,7 +40,7 @@ public class LayoutUtils {
     }
 
     public static int getShelfTrackingDistance(Context context, DeviceProfile dp,
-            PagedOrientationHandler orientationHandler) {
+            RecentsPagedOrientationHandler orientationHandler) {
         // Track the bottom of the window.
         Rect taskSize = new Rect();
         LauncherActivityInterface.INSTANCE.calculateTaskSize(context, dp, taskSize,

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

@@ -53,6 +53,7 @@ import com.android.launcher3.util.SettingsCache;
 import com.android.quickstep.BaseActivityInterface;
 import com.android.quickstep.SystemUiProxy;
 import com.android.quickstep.TaskAnimationManager;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 
 import java.lang.annotation.Retention;
 import java.util.function.IntConsumer;
@@ -75,7 +76,8 @@ public class RecentsOrientedState implements
     @IntDef({ROTATION_0, ROTATION_90, ROTATION_180, ROTATION_270})
     public @interface SurfaceRotation {}
 
-    private PagedOrientationHandler mOrientationHandler = PagedOrientationHandler.PORTRAIT;
+    private RecentsPagedOrientationHandler mOrientationHandler =
+            RecentsPagedOrientationHandler.PORTRAIT;
 
     private @SurfaceRotation int mTouchRotation = ROTATION_0;
     private @SurfaceRotation int mDisplayRotation = ROTATION_0;
@@ -225,13 +227,13 @@ public class RecentsOrientedState implements
     private boolean updateHandler() {
         mRecentsActivityRotation = inferRecentsActivityRotation(mDisplayRotation);
         if (mRecentsActivityRotation == mTouchRotation || isRecentsActivityRotationAllowed()) {
-            mOrientationHandler = PagedOrientationHandler.PORTRAIT;
+            mOrientationHandler = RecentsPagedOrientationHandler.PORTRAIT;
         } else if (mTouchRotation == ROTATION_90) {
-            mOrientationHandler = PagedOrientationHandler.LANDSCAPE;
+            mOrientationHandler = RecentsPagedOrientationHandler.LANDSCAPE;
         } else if (mTouchRotation == ROTATION_270) {
-            mOrientationHandler = PagedOrientationHandler.SEASCAPE;
+            mOrientationHandler = RecentsPagedOrientationHandler.SEASCAPE;
         } else {
-            mOrientationHandler = PagedOrientationHandler.PORTRAIT;
+            mOrientationHandler = RecentsPagedOrientationHandler.PORTRAIT;
         }
         if (DEBUG) {
             Log.d(TAG, "current RecentsOrientedState: " + this);
@@ -413,7 +415,7 @@ public class RecentsOrientedState implements
         return scale;
     }
 
-    public PagedOrientationHandler getOrientationHandler() {
+    public RecentsPagedOrientationHandler getOrientationHandler() {
         return mOrientationHandler;
     }
 

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

@@ -25,7 +25,7 @@ import android.widget.Button;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.statemanager.StatefulActivity;
-import com.android.launcher3.touch.PagedOrientationHandler;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 
 public class ClearAllButton extends Button {
 
@@ -81,7 +81,8 @@ public class ClearAllButton extends Button {
     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
         super.onLayout(changed, left, top, right, bottom);
-        PagedOrientationHandler orientationHandler = getRecentsView().getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                getRecentsView().getPagedOrientationHandler();
         mSidePadding = orientationHandler.getClearAllSidePadding(getRecentsView(), mIsRtl);
     }
 
@@ -131,7 +132,8 @@ public class ClearAllButton extends Button {
             return;
         }
 
-        PagedOrientationHandler orientationHandler = recentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                recentsView.getPagedOrientationHandler();
         float orientationSize = orientationHandler.getPrimaryValue(getWidth(), getHeight());
         if (orientationSize == 0) {
             return;
@@ -219,7 +221,8 @@ public class ClearAllButton extends Button {
             return;
         }
 
-        PagedOrientationHandler orientationHandler = recentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                recentsView.getPagedOrientationHandler();
         orientationHandler.getPrimaryViewTranslate().set(this,
                 orientationHandler.getPrimaryValue(0f, getOriginalTranslationY())
                         + mNormalTranslationPrimary + getFullscreenTrans(
@@ -232,7 +235,8 @@ public class ClearAllButton extends Button {
             return;
         }
 
-        PagedOrientationHandler orientationHandler = recentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                recentsView.getPagedOrientationHandler();
         orientationHandler.getSecondaryViewTranslate().set(this,
                 orientationHandler.getSecondaryValue(0f, getOriginalTranslationY()));
     }

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

@@ -50,8 +50,8 @@ import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.SplitConfigurationOptions.SplitBounds;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.systemui.shared.recents.model.Task;
 
 import java.lang.annotation.Retention;
@@ -321,7 +321,7 @@ public final class DigitalWellBeingToast {
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
         layoutParams.bottomMargin = ((ViewGroup.MarginLayoutParams)
                 mTaskView.getThumbnail().getLayoutParams()).bottomMargin;
-        PagedOrientationHandler orientationHandler = mTaskView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler = mTaskView.getPagedOrientationHandler();
         Pair<Float, Float> translations = orientationHandler
                 .getDwbLayoutTranslations(mTaskView.getMeasuredWidth(),
                         mTaskView.getMeasuredHeight(), mSplitBounds, deviceProfile,

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

@@ -43,9 +43,9 @@ import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.PendingAnimation;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.taskbar.TaskbarActivityContext;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.SplitConfigurationOptions;
 import com.android.launcher3.views.BaseDragLayer;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.AnimUtils;
 import com.android.quickstep.util.MultiValueUpdateListener;
 import com.android.quickstep.util.SplitAnimationTimings;
@@ -95,7 +95,7 @@ public class FloatingTaskView extends FrameLayout {
     private final StatefulActivity mActivity;
     private final boolean mIsRtl;
     private final FullscreenDrawParams mFullscreenParams;
-    private PagedOrientationHandler mOrientationHandler;
+    private RecentsPagedOrientationHandler mOrientationHandler;
     @SplitConfigurationOptions.StagePosition
     private int mStagePosition;
     private final Rect mTmpRect = new Rect();
@@ -220,7 +220,7 @@ public class FloatingTaskView extends FrameLayout {
         mOrientationHandler.setSecondaryScale(mSplitPlaceholderView.getIconView(), childScaleY);
     }
 
-    public void updateOrientationHandler(PagedOrientationHandler orientationHandler) {
+    public void updateOrientationHandler(RecentsPagedOrientationHandler orientationHandler) {
         mOrientationHandler = orientationHandler;
         mSplitPlaceholderView.getIconView().setRotation(mOrientationHandler.getDegreesRotated());
     }

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

@@ -39,9 +39,9 @@ import androidx.annotation.Nullable;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.views.ActivityContext;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.RecentsOrientedState;
 
 /**
@@ -211,7 +211,8 @@ public class IconAppChipView extends FrameLayout implements TaskViewIcon {
 
     @Override
     public void setIconOrientation(RecentsOrientedState orientationState, boolean isGridTask) {
-        PagedOrientationHandler orientationHandler = orientationState.getOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                orientationState.getOrientationHandler();
         boolean isRtl = isLayoutRtl();
         DeviceProfile deviceProfile =
                 ActivityContext.lookupContext(getContext()).getDeviceProfile();

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

@@ -30,8 +30,8 @@ import androidx.annotation.Nullable;
 
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.views.ActivityContext;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.RecentsOrientedState;
 
 /**
@@ -173,7 +173,8 @@ public class IconView extends View implements TaskViewIcon {
 
     @Override
     public void setIconOrientation(RecentsOrientedState orientationState, boolean isGridTask) {
-        PagedOrientationHandler orientationHandler = orientationState.getOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                orientationState.getOrientationHandler();
         boolean isRtl = getLayoutDirection() == LAYOUT_DIRECTION_RTL;
         DeviceProfile deviceProfile =
                 ActivityContext.lookupContext(getContext()).getDeviceProfile();

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

@@ -156,7 +156,6 @@ import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.shared.TestProtocol;
 import com.android.launcher3.touch.OverScroll;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.DynamicResource;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSet;
@@ -187,6 +186,7 @@ import com.android.quickstep.TaskThumbnailCache;
 import com.android.quickstep.TaskViewUtils;
 import com.android.quickstep.TopTaskTracker;
 import com.android.quickstep.ViewUtils;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.ActiveGestureErrorDetector;
 import com.android.quickstep.util.ActiveGestureLog;
 import com.android.quickstep.util.AnimUtils;
@@ -788,7 +788,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         mDesktopTaskViewPool = new ViewPool<>(context, this, R.layout.task_desktop,
                 5 /* max size */, 1 /* initial size */);
 
-        mIsRtl = mOrientationHandler.getRecentsRtlSetting(getResources());
+        setOrientationHandler(mOrientationState.getOrientationHandler());
+        mIsRtl = getPagedOrientationHandler().getRecentsRtlSetting(getResources());
         setLayoutDirection(mIsRtl ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR);
         mSplitPlaceholderSize = getResources().getDimensionPixelSize(
                 R.dimen.split_placeholder_size);
@@ -812,7 +813,6 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 .getDimensionPixelSize(R.dimen.recents_empty_message_text_padding);
         setWillNotDraw(false);
         updateEmptyMessage();
-        mOrientationHandler = mOrientationState.getOrientationHandler();
 
         mTaskOverlayFactory = Overrides.getObject(
                 TaskOverlayFactory.class,
@@ -918,9 +918,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         if (mAllowOverScroll && (!mEdgeGlowRight.isFinished() || !mEdgeGlowLeft.isFinished())) {
             final int restoreCount = canvas.save();
 
-            int primarySize = mOrientationHandler.getPrimaryValue(getWidth(), getHeight());
+            int primarySize = getPagedOrientationHandler().getPrimaryValue(getWidth(), getHeight());
             int scroll = OverScroll.dampedScroll(getUndampedOverScrollShift(), primarySize);
-            mOrientationHandler.setPrimary(canvas, CANVAS_TRANSLATE, scroll);
+            getPagedOrientationHandler().setPrimary(canvas, CANVAS_TRANSLATE, scroll);
 
             if (mOverScrollShift != scroll) {
                 mOverScrollShift = scroll;
@@ -944,8 +944,8 @@ 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);
+        int primarySize = getPagedOrientationHandler().getPrimaryValue(width, height);
+        int secondarySize = getPagedOrientationHandler().getSecondaryValue(width, height);
 
         float effectiveShift = 0;
         if (!mEdgeGlowLeft.isFinished()) {
@@ -1270,8 +1270,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
     public boolean isTaskViewVisible(TaskView tv) {
         if (showAsGrid()) {
-            int screenStart = mOrientationHandler.getPrimaryScroll(this);
-            int screenEnd = screenStart + mOrientationHandler.getMeasuredSize(this);
+            int screenStart = getPagedOrientationHandler().getPrimaryScroll(this);
+            int screenEnd = screenStart + getPagedOrientationHandler().getMeasuredSize(this);
             return isTaskViewWithinBounds(tv, screenStart, screenEnd);
         } else {
             // For now, just check if it's the active task or an adjacent task
@@ -1281,8 +1281,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
     public boolean isTaskViewFullyVisible(TaskView tv) {
         if (showAsGrid()) {
-            int screenStart = mOrientationHandler.getPrimaryScroll(this);
-            int screenEnd = screenStart + mOrientationHandler.getMeasuredSize(this);
+            int screenStart = getPagedOrientationHandler().getPrimaryScroll(this);
+            int screenEnd = screenStart + getPagedOrientationHandler().getMeasuredSize(this);
             return isTaskViewFullyWithinBounds(tv, screenStart, screenEnd);
         } else {
             // For now, just check if it's the active task
@@ -1307,9 +1307,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
     private int getSnapToLastTaskScrollDiff() {
         // Snap to a position where ClearAll is just invisible.
-        int screenStart = mOrientationHandler.getPrimaryScroll(this);
+        int screenStart = getPagedOrientationHandler().getPrimaryScroll(this);
         int clearAllScroll = getScrollForPage(indexOfChild(mClearAllButton));
-        int clearAllWidth = mOrientationHandler.getPrimarySize(mClearAllButton);
+        int clearAllWidth = getPagedOrientationHandler().getPrimarySize(mClearAllButton);
         int lastTaskScroll = getLastTaskScroll(clearAllScroll, clearAllWidth);
         return screenStart - lastTaskScroll;
     }
@@ -1320,20 +1320,20 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     }
 
     private boolean isTaskViewWithinBounds(TaskView tv, int start, int end) {
-        int taskStart = mOrientationHandler.getChildStart(tv) + (int) tv.getOffsetAdjustment(
-                showAsGrid());
-        int taskSize = (int) (mOrientationHandler.getMeasuredSize(tv) * tv.getSizeAdjustment(
-                showAsFullscreen()));
+        int taskStart = getPagedOrientationHandler().getChildStart(tv)
+                + (int) tv.getOffsetAdjustment(showAsGrid());
+        int taskSize = (int) (getPagedOrientationHandler().getMeasuredSize(tv)
+                * tv.getSizeAdjustment(showAsFullscreen()));
         int taskEnd = taskStart + taskSize;
         return (taskStart >= start && taskStart <= end) || (taskEnd >= start
                 && taskEnd <= end);
     }
 
     private boolean isTaskViewFullyWithinBounds(TaskView tv, int start, int end) {
-        int taskStart = mOrientationHandler.getChildStart(tv) + (int) tv.getOffsetAdjustment(
-                showAsGrid());
-        int taskSize = (int) (mOrientationHandler.getMeasuredSize(tv) * tv.getSizeAdjustment(
-                showAsFullscreen()));
+        int taskStart = getPagedOrientationHandler().getChildStart(tv)
+                + (int) tv.getOffsetAdjustment(showAsGrid());
+        int taskSize = (int) (getPagedOrientationHandler().getMeasuredSize(tv)
+                * tv.getSizeAdjustment(showAsFullscreen()));
         int taskEnd = taskStart + taskSize;
         return taskStart >= start && taskEnd <= end;
     }
@@ -1628,7 +1628,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             return;
         }
 
-        int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+        int primaryScroll = getPagedOrientationHandler().getPrimaryScroll(this);
         int currentPageScroll = getScrollForPage(mCurrentPage);
         mCurrentPageScrollDiff = primaryScroll - currentPageScroll;
 
@@ -2021,20 +2021,20 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
     private void updateOrientationHandler(boolean forceRecreateDragLayerControllers) {
         // Handle orientation changes.
-        PagedOrientationHandler oldOrientationHandler = mOrientationHandler;
-        mOrientationHandler = mOrientationState.getOrientationHandler();
+        RecentsPagedOrientationHandler oldOrientationHandler = getPagedOrientationHandler();
+        setOrientationHandler(mOrientationState.getOrientationHandler());
 
-        mIsRtl = mOrientationHandler.getRecentsRtlSetting(getResources());
+        mIsRtl = getPagedOrientationHandler().getRecentsRtlSetting(getResources());
         setLayoutDirection(mIsRtl
                 ? View.LAYOUT_DIRECTION_RTL
                 : View.LAYOUT_DIRECTION_LTR);
         mClearAllButton.setLayoutDirection(mIsRtl
                 ? View.LAYOUT_DIRECTION_LTR
                 : View.LAYOUT_DIRECTION_RTL);
-        mClearAllButton.setRotation(mOrientationHandler.getDegreesRotated());
+        mClearAllButton.setRotation(getPagedOrientationHandler().getDegreesRotated());
 
         if (forceRecreateDragLayerControllers
-                || !mOrientationHandler.equals(oldOrientationHandler)) {
+                || !getPagedOrientationHandler().equals(oldOrientationHandler)) {
             // Changed orientations, update controllers so they intercept accordingly.
             mActivity.getDragLayer().recreateControllers();
             onOrientationChanged();
@@ -2081,7 +2081,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         mSizeStrategy.calculateGridSize(mActivity.getDeviceProfile(), mActivity,
                 mLastComputedGridSize);
         mSizeStrategy.calculateGridTaskSize(mActivity, mActivity.getDeviceProfile(),
-                mLastComputedGridTaskSize, mOrientationHandler);
+                mLastComputedGridTaskSize, getPagedOrientationHandler());
         if (isDesktopModeSupported()) {
             mSizeStrategy.calculateDesktopTaskSize(mActivity, mActivity.getDeviceProfile(),
                     mLastComputedDesktopTaskSize);
@@ -2136,7 +2136,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
     public void getTaskSize(Rect outRect) {
         mSizeStrategy.calculateTaskSize(mActivity, mActivity.getDeviceProfile(), outRect,
-                mOrientationHandler);
+                getPagedOrientationHandler());
         mLastComputedTaskSize.set(outRect);
     }
 
@@ -2159,7 +2159,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
     private Rect getTaskBounds(TaskView taskView) {
         int selectedPage = indexOfChild(taskView);
-        int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+        int primaryScroll = getPagedOrientationHandler().getPrimaryScroll(this);
         int selectedPageScroll = getScrollForPage(selectedPage);
         boolean isTopRow = taskView != null && mTopRowIdSet.contains(taskView.getTaskViewId());
         Rect outRect = new Rect(mLastComputedTaskSize);
@@ -2187,7 +2187,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     /** Gets the task size for modal state. */
     public void getModalTaskSize(Rect outRect) {
         mSizeStrategy.calculateModalTaskSize(mActivity, mActivity.getDeviceProfile(), outRect,
-                mOrientationHandler);
+                getPagedOrientationHandler());
     }
 
     @Override
@@ -2243,7 +2243,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         if (getPageCount() == 0 || getPageAt(0).getMeasuredWidth() == 0) {
             return;
         }
-        int scroll = mOrientationHandler.getPrimaryScroll(this);
+        int scroll = getPagedOrientationHandler().getPrimaryScroll(this);
         mClearAllButton.onRecentsViewScroll(scroll, mOverviewGridEnabled);
 
         // Clear all button alpha was set by the previous line.
@@ -2293,8 +2293,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         int visibleStart = 0;
         int visibleEnd = 0;
         if (showAsGrid()) {
-            int screenStart = mOrientationHandler.getPrimaryScroll(this);
-            int pageOrientedSize = mOrientationHandler.getMeasuredSize(this);
+            int screenStart = getPagedOrientationHandler().getPrimaryScroll(this);
+            int pageOrientedSize = getPagedOrientationHandler().getMeasuredSize(this);
             // For GRID_ONLY_OVERVIEW, use +/- 1 task column as visible area for preloading
             // adjacent thumbnails, otherwise use +/-50% screen width
             int extraWidth = enableGridOnlyOverview() ? getLastComputedTaskSize().width()
@@ -3232,8 +3232,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 clampToProgress(isOnGridBottomRow(taskView) ? ACCELERATE : FINAL_FRAME, 0, 0.5f));
         FloatProperty<TaskView> secondaryViewTranslate =
                 taskView.getSecondaryDismissTranslationProperty();
-        int secondaryTaskDimension = mOrientationHandler.getSecondaryDimension(taskView);
-        int verticalFactor = mOrientationHandler.getSecondaryTranslationDirectionFactor();
+        int secondaryTaskDimension = getPagedOrientationHandler().getSecondaryDimension(taskView);
+        int verticalFactor = getPagedOrientationHandler().getSecondaryTranslationDirectionFactor();
 
         ResourceProvider rp = DynamicResource.provider(mActivity);
         SpringProperty sp = new SpringProperty(SpringProperty.FLAG_CAN_SPRING_ON_START)
@@ -3248,7 +3248,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 if (!mEnableDrawingLiveTile) return;
                 runActionOnRemoteHandles(
                         remoteTargetHandle -> remoteTargetHandle.getTaskViewSimulator()
-                                .taskSecondaryTranslation.value = mOrientationHandler
+                                .taskSecondaryTranslation.value = getPagedOrientationHandler()
                                 .getSecondaryValue(taskView.getTranslationX(),
                                         taskView.getTranslationY()
                                 ));
@@ -3262,7 +3262,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
      * and then animates it into the split position that was desired
      */
     private void createInitialSplitSelectAnimation(PendingAnimation anim) {
-        mOrientationHandler.getInitialSplitPlaceholderBounds(mSplitPlaceholderSize,
+        getPagedOrientationHandler().getInitialSplitPlaceholderBounds(mSplitPlaceholderSize,
                 mSplitPlaceholderInset, mActivity.getDeviceProfile(),
                 mSplitSelectStateController.getActiveSplitStagePosition(), mTempRect);
         SplitAnimationTimings timings =
@@ -3491,7 +3491,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 // beyond that, we'll need to snap to last task instead.
                 TaskView lastTask = getLastGridTaskView();
                 if (lastTask != null) {
-                    int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+                    int primaryScroll = getPagedOrientationHandler().getPrimaryScroll(this);
                     int lastTaskScroll = getScrollForPage(indexOfChild(lastTask));
                     if ((mIsRtl && primaryScroll < lastTaskScroll)
                             || (!mIsRtl && primaryScroll > lastTaskScroll)) {
@@ -3597,7 +3597,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                 if (scrollDiff != 0) {
                     FloatProperty translationProperty = child instanceof TaskView
                             ? ((TaskView) child).getPrimaryDismissTranslationProperty()
-                            : mOrientationHandler.getPrimaryViewTranslate();
+                            : getPagedOrientationHandler().getPrimaryViewTranslate();
 
                     float additionalDismissDuration =
                             ADDITIONAL_DISMISS_TRANSLATION_INTERPOLATION_OFFSET * Math.abs(
@@ -3633,7 +3633,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                                     remoteTargetHandle ->
                                             remoteTargetHandle.getTaskViewSimulator()
                                                     .taskPrimaryTranslation.value =
-                                                    mOrientationHandler.getPrimaryValue(
+                                                    getPagedOrientationHandler().getPrimaryValue(
                                                             child.getTranslationX(),
                                                             child.getTranslationY()
                                                     ));
@@ -3709,7 +3709,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                     if (isStagingFocusedTask) {
                         // Moves less if focused task is not in scroll position.
                         int focusedTaskScroll = getScrollForPage(dismissedIndex);
-                        int primaryScroll = mOrientationHandler.getPrimaryScroll(this);
+                        int primaryScroll = getPagedOrientationHandler().getPrimaryScroll(this);
                         int focusedTaskScrollDiff = primaryScroll - focusedTaskScroll;
                         primaryTranslation +=
                                 mIsRtl ? focusedTaskScrollDiff : -focusedTaskScrollDiff;
@@ -3837,7 +3837,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                             }
 
                             if (calculateScrollDiff) {
-                                int primaryScroll = mOrientationHandler.getPrimaryScroll(
+                                int primaryScroll = getPagedOrientationHandler().getPrimaryScroll(
                                         RecentsView.this);
                                 int currentPageScroll = getScrollForPage(mCurrentPage);
                                 mCurrentPageScrollDiff = primaryScroll - currentPageScroll;
@@ -3878,9 +3878,9 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                                 TaskView taskView = requireTaskViewAt(highestVisibleTaskIndex);
 
                                 boolean shouldRebalance;
-                                int screenStart = mOrientationHandler.getPrimaryScroll(
+                                int screenStart = getPagedOrientationHandler().getPrimaryScroll(
                                         RecentsView.this);
-                                int taskStart = mOrientationHandler.getChildStart(taskView)
+                                int taskStart = getPagedOrientationHandler().getChildStart(taskView)
                                         + (int) taskView.getOffsetAdjustment(/*gridEnabled=*/ true);
 
                                 // Rebalance only if there is a maximum gap between the task and the
@@ -3889,10 +3889,11 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                                 if (mIsRtl) {
                                     shouldRebalance = taskStart <= screenStart + mPageSpacing;
                                 } else {
-                                    int screenEnd =
-                                            screenStart + mOrientationHandler.getMeasuredSize(
-                                                    RecentsView.this);
-                                    int taskSize = (int) (mOrientationHandler.getMeasuredSize(
+                                    int screenEnd = screenStart
+                                            + getPagedOrientationHandler().getMeasuredSize(
+                                            RecentsView.this);
+                                    int taskSize = (int) (
+                                            getPagedOrientationHandler().getMeasuredSize(
                                             taskView) * taskView
                                             .getSizeAdjustment(/*fullscreenEnabled=*/false));
                                     int taskEnd = taskStart + taskSize;
@@ -4287,8 +4288,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         return mOrientationState;
     }
 
-    public PagedOrientationHandler getPagedOrientationHandler() {
-        return mOrientationHandler;
+    public RecentsPagedOrientationHandler getPagedOrientationHandler() {
+        return (RecentsPagedOrientationHandler) super.getPagedOrientationHandler();
     }
 
     @Nullable
@@ -4466,7 +4467,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             View child = getChildAt(i);
             FloatProperty translationPropertyX = child instanceof TaskView
                     ? ((TaskView) child).getPrimaryTaskOffsetTranslationProperty()
-                    : mOrientationHandler.getPrimaryViewTranslate();
+                    : getPagedOrientationHandler().getPrimaryViewTranslate();
             translationPropertyX.set(child, totalTranslationX);
             if (mEnableDrawingLiveTile && i == getRunningTaskIndex()) {
                 runActionOnRemoteHandles(
@@ -4504,8 +4505,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
                     mIsRtl ? outRect.right : outRect.left, outRect.top);
             mTempMatrix.mapRect(outRect);
         }
-        outRect.offset(mOrientationHandler.getPrimaryValue(-midPointScroll, 0),
-                mOrientationHandler.getSecondaryValue(-midPointScroll, 0));
+        outRect.offset(getPagedOrientationHandler().getPrimaryValue(-midPointScroll, 0),
+                getPagedOrientationHandler().getSecondaryValue(-midPointScroll, 0));
     }
 
     /**
@@ -4530,14 +4531,15 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             // to reach offscreen. Offset the task position to the task's starting point, and offset
             // by current page's scroll diff.
             int midpointScroll = getScrollForPage(midpointIndex)
-                    + mOrientationHandler.getPrimaryScroll(this) - getScrollForPage(mCurrentPage);
+                    + getPagedOrientationHandler().getPrimaryScroll(this)
+                    - getScrollForPage(mCurrentPage);
 
             getPersistentChildPosition(midpointIndex, midpointScroll, taskPosition);
-            float midpointStart = mOrientationHandler.getStart(taskPosition);
+            float midpointStart = getPagedOrientationHandler().getStart(taskPosition);
 
             getPersistentChildPosition(childIndex, midpointScroll, taskPosition);
             // Assume child does not overlap with midPointChild.
-            isStartShift = mOrientationHandler.getStart(taskPosition) < midpointStart;
+            isStartShift = getPagedOrientationHandler().getStart(taskPosition) < midpointStart;
         } else {
             // Position the task at scroll position.
             getPersistentChildPosition(childIndex, getScrollForPage(childIndex), taskPosition);
@@ -4551,27 +4553,29 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         // desired position, and adjust the computed distance accordingly.
         float distanceToOffscreen;
         if (isStartShift) {
-            float desiredStart = -mOrientationHandler.getPrimarySize(taskPosition);
-            distanceToOffscreen = -mOrientationHandler.getEnd(taskPosition);
+            float desiredStart = -getPagedOrientationHandler().getPrimarySize(taskPosition);
+            distanceToOffscreen = -getPagedOrientationHandler().getEnd(taskPosition);
             if (mLastComputedTaskStartPushOutDistance == null) {
                 taskPosition.offsetTo(
-                        mOrientationHandler.getPrimaryValue(desiredStart, 0f),
-                        mOrientationHandler.getSecondaryValue(desiredStart, 0f));
+                        getPagedOrientationHandler().getPrimaryValue(desiredStart, 0f),
+                        getPagedOrientationHandler().getSecondaryValue(desiredStart, 0f));
                 getMatrix().mapRect(taskPosition);
-                mLastComputedTaskStartPushOutDistance = mOrientationHandler.getEnd(taskPosition)
-                        / mOrientationHandler.getPrimaryScale(this);
+                mLastComputedTaskStartPushOutDistance = getPagedOrientationHandler().getEnd(
+                        taskPosition) / getPagedOrientationHandler().getPrimaryScale(this);
             }
             distanceToOffscreen -= mLastComputedTaskStartPushOutDistance;
         } else {
-            float desiredStart = mOrientationHandler.getPrimarySize(this);
-            distanceToOffscreen = desiredStart - mOrientationHandler.getStart(taskPosition);
+            float desiredStart = getPagedOrientationHandler().getPrimarySize(this);
+            distanceToOffscreen = desiredStart - getPagedOrientationHandler().getStart(
+                    taskPosition);
             if (mLastComputedTaskEndPushOutDistance == null) {
                 taskPosition.offsetTo(
-                        mOrientationHandler.getPrimaryValue(desiredStart, 0f),
-                        mOrientationHandler.getSecondaryValue(desiredStart, 0f));
+                        getPagedOrientationHandler().getPrimaryValue(desiredStart, 0f),
+                        getPagedOrientationHandler().getSecondaryValue(desiredStart, 0f));
                 getMatrix().mapRect(taskPosition);
-                mLastComputedTaskEndPushOutDistance = (mOrientationHandler.getStart(taskPosition)
-                        - desiredStart) / mOrientationHandler.getPrimaryScale(this);
+                mLastComputedTaskEndPushOutDistance = (getPagedOrientationHandler().getStart(
+                        taskPosition) - desiredStart)
+                        / getPagedOrientationHandler().getPrimaryScale(this);
             }
             distanceToOffscreen -= mLastComputedTaskEndPushOutDistance;
         }
@@ -4660,7 +4664,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
      * of split invocation as such.
      */
     public void initiateSplitSelect(TaskView taskView) {
-        int defaultSplitPosition = mOrientationHandler
+        int defaultSplitPosition = getPagedOrientationHandler()
                 .getDefaultSplitPosition(mActivity.getDeviceProfile());
         initiateSplitSelect(taskView, defaultSplitPosition, LAUNCHER_OVERVIEW_ACTIONS_SPLIT);
     }
@@ -4803,7 +4807,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
         int halfDividerSize = getResources()
                 .getDimensionPixelSize(R.dimen.multi_window_task_divider_size) / 2;
-        mOrientationHandler.getFinalSplitPlaceholderBounds(halfDividerSize,
+        getPagedOrientationHandler().getFinalSplitPlaceholderBounds(halfDividerSize,
                 mActivity.getDeviceProfile(),
                 mSplitSelectStateController.getActiveSplitStagePosition(), firstTaskEndingBounds,
                 secondTaskEndingBounds);
@@ -4920,7 +4924,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
      */
     public float getSplitSelectTranslation() {
         DeviceProfile deviceProfile = mActivity.getDeviceProfile();
-        PagedOrientationHandler orientationHandler = getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler = getPagedOrientationHandler();
         int splitPosition = getSplitSelectController().getActiveSplitStagePosition();
         int splitPlaceholderSize =
                 mActivity.getResources().getDimensionPixelSize(R.dimen.split_placeholder_size);
@@ -4945,16 +4949,16 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     }
 
     protected void onRotateInSplitSelectionState() {
-        mOrientationHandler.getInitialSplitPlaceholderBounds(mSplitPlaceholderSize,
+        getPagedOrientationHandler().getInitialSplitPlaceholderBounds(mSplitPlaceholderSize,
                 mSplitPlaceholderInset, mActivity.getDeviceProfile(),
                 mSplitSelectStateController.getActiveSplitStagePosition(), mTempRect);
         mTempRectF.set(mTempRect);
         FloatingTaskView firstFloatingTaskView =
                 mSplitSelectStateController.getFirstFloatingTaskView();
-        firstFloatingTaskView.updateOrientationHandler(mOrientationHandler);
+        firstFloatingTaskView.updateOrientationHandler(getPagedOrientationHandler());
         firstFloatingTaskView.update(mTempRectF, /*progress=*/1f);
 
-        PagedOrientationHandler orientationHandler = getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler = getPagedOrientationHandler();
         Pair<FloatProperty, FloatProperty> taskViewsFloat =
                 orientationHandler.getSplitSelectTaskOffset(
                         TASK_PRIMARY_SPLIT_TRANSLATION, TASK_SECONDARY_SPLIT_TRANSLATION,
@@ -5059,7 +5063,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             float displacementX = tv.getWidth() * (toScale - 1f);
             float primaryTranslation = mIsRtl ? -displacementX : displacementX;
             anim.play(ObjectAnimator.ofFloat(getPageAt(centerTaskIndex),
-                    mOrientationHandler.getPrimaryViewTranslate(), primaryTranslation));
+                    getPagedOrientationHandler().getPrimaryViewTranslate(), primaryTranslation));
             int runningTaskIndex = getRunningTaskIndex();
             if (runningTaskIndex != -1 && runningTaskIndex != taskIndex
                     && getRemoteTargetHandles() != null) {
@@ -5075,7 +5079,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             if (otherAdjacentTaskIndex >= 0 && otherAdjacentTaskIndex < getPageCount()) {
                 PropertyValuesHolder[] properties = new PropertyValuesHolder[3];
                 properties[0] = PropertyValuesHolder.ofFloat(
-                        mOrientationHandler.getPrimaryViewTranslate(), primaryTranslation);
+                        getPagedOrientationHandler().getPrimaryViewTranslate(), primaryTranslation);
                 properties[1] = PropertyValuesHolder.ofFloat(View.SCALE_X, 1);
                 properties[2] = PropertyValuesHolder.ofFloat(View.SCALE_Y, 1);
 
@@ -5495,8 +5499,8 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
         // Align ClearAllButton to the left (RTL) or right (non-RTL), which is different from other
         // TaskViews. This must be called after laying out ClearAllButton.
         if (layoutChildren) {
-            int clearAllWidthDiff = mOrientationHandler.getPrimaryValue(mTaskWidth, mTaskHeight)
-                    - mOrientationHandler.getPrimarySize(mClearAllButton);
+            int clearAllWidthDiff = getPagedOrientationHandler().getPrimaryValue(mTaskWidth,
+                    mTaskHeight) - getPagedOrientationHandler().getPrimarySize(mClearAllButton);
             mClearAllButton.setScrollOffsetPrimary(mIsRtl ? clearAllWidthDiff : -clearAllWidthDiff);
         }
 
@@ -5504,7 +5508,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
 
         int clearAllIndex = indexOfChild(mClearAllButton);
         int clearAllScroll = 0;
-        int clearAllWidth = mOrientationHandler.getPrimarySize(mClearAllButton);
+        int clearAllWidth = getPagedOrientationHandler().getPrimarySize(mClearAllButton);
         if (clearAllIndex != -1 && clearAllIndex < outPageScrolls.length) {
             float scrollDiff = mClearAllButton.getScrollAdjustment(showAsFullscreen, showAsGrid);
             clearAllScroll = newPageScrolls[clearAllIndex] + (int) scrollDiff;
@@ -5613,7 +5617,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
             overScrollShift = (int) Utilities.mapRange(mAdjacentPageHorizontalOffset,
                     overScrollShift, getUndampedOverScrollShift());
         }
-        return getScrollForPage(pageIndex) - mOrientationHandler.getPrimaryScroll(this)
+        return getScrollForPage(pageIndex) - getPagedOrientationHandler().getPrimaryScroll(this)
                 + overScrollShift + getOffsetFromScrollPosition(pageIndex);
     }
 
@@ -5682,7 +5686,7 @@ public abstract class RecentsView<ACTIVITY_TYPE extends StatefulActivity<STATE_T
     public Consumer<MotionEvent> getEventDispatcher(float navbarRotation) {
         float degreesRotated;
         if (navbarRotation == 0) {
-            degreesRotated = mOrientationHandler.getDegreesRotated();
+            degreesRotated = getPagedOrientationHandler().getDegreesRotated();
         } else {
             degreesRotated = -navbarRotation;
         }

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

@@ -48,10 +48,10 @@ import com.android.launcher3.R;
 import com.android.launcher3.anim.AnimationSuccessListener;
 import com.android.launcher3.anim.RoundedRectRevealOutlineProvider;
 import com.android.launcher3.popup.SystemShortcut;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.views.BaseDragLayer;
 import com.android.quickstep.TaskOverlayFactory;
 import com.android.quickstep.TaskUtils;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.TaskCornerRadius;
 import com.android.quickstep.views.TaskView.TaskIdAttributeContainer;
 
@@ -215,7 +215,8 @@ public class TaskMenuView extends AbstractFloatingView {
 
     private void orientAroundTaskView(TaskIdAttributeContainer taskContainer) {
         RecentsView recentsView = mActivity.getOverviewPanel();
-        PagedOrientationHandler orientationHandler = recentsView.getPagedOrientationHandler();
+        RecentsPagedOrientationHandler orientationHandler =
+                recentsView.getPagedOrientationHandler();
         measure(MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
 
         // Get Position

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

@@ -51,11 +51,11 @@ import androidx.core.graphics.ColorUtils;
 import com.android.launcher3.BaseActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.SystemUiController;
 import com.android.launcher3.util.SystemUiController.SystemUiControllerFlags;
 import com.android.quickstep.TaskOverlayFactory.TaskOverlay;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.views.TaskView.FullscreenDrawParams;
 import com.android.systemui.shared.recents.model.Task;
 import com.android.systemui.shared.recents.model.ThumbnailData;
@@ -513,7 +513,7 @@ public class TaskThumbnailView extends View {
             return false;
         }
 
-        if (recents.getPagedOrientationHandler() == PagedOrientationHandler.PORTRAIT) {
+        if (recents.getPagedOrientationHandler() == RecentsPagedOrientationHandler.PORTRAIT) {
             int currentRotation = recents.getPagedViewOrientedState().getRecentsActivityRotation();
             return (currentRotation - mThumbnailData.rotation) % 2 != 0;
         } else {

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

@@ -87,7 +87,6 @@ import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.statemanager.StatefulActivity;
 import com.android.launcher3.testing.TestLogging;
 import com.android.launcher3.testing.shared.TestProtocol;
-import com.android.launcher3.touch.PagedOrientationHandler;
 import com.android.launcher3.util.ActivityOptionsWrapper;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.RunnableList;
@@ -104,6 +103,7 @@ import com.android.quickstep.TaskIconCache;
 import com.android.quickstep.TaskThumbnailCache;
 import com.android.quickstep.TaskUtils;
 import com.android.quickstep.TaskViewUtils;
+import com.android.quickstep.orientation.RecentsPagedOrientationHandler;
 import com.android.quickstep.util.ActiveGestureLog;
 import com.android.quickstep.util.BorderAnimator;
 import com.android.quickstep.util.CancellableTask;
@@ -116,6 +116,8 @@ import com.android.systemui.shared.recents.model.ThumbnailData;
 import com.android.systemui.shared.system.ActivityManagerWrapper;
 import com.android.systemui.shared.system.QuickStepContract;
 
+import kotlin.Unit;
+
 import java.lang.annotation.Retention;
 import java.util.Arrays;
 import java.util.Collections;
@@ -124,8 +126,6 @@ import java.util.List;
 import java.util.function.Consumer;
 import java.util.stream.Stream;
 
-import kotlin.Unit;
-
 /**
  * A task in the Recents view.
  */
@@ -1660,7 +1660,7 @@ public class TaskView extends FrameLayout implements Reusable {
         return (RecentsView) getParent();
     }
 
-    PagedOrientationHandler getPagedOrientationHandler() {
+    RecentsPagedOrientationHandler getPagedOrientationHandler() {
         return getRecentsView().mOrientationState.getOrientationHandler();
     }