Merge "Converting orientation handler classes to kotlin" into main
diff --git a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
index e6a115a..6c1d4b1 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
+++ b/quickstep/src/com/android/launcher3/uioverrides/RecentsViewStateController.java
@@ -133,7 +133,7 @@
         // Create transition animations to split select
         RecentsPagedOrientationHandler orientationHandler =
                 ((RecentsView) mLauncher.getOverviewPanel()).getPagedOrientationHandler();
-        Pair<FloatProperty, FloatProperty> taskViewsFloat =
+        Pair<FloatProperty<RecentsView>, FloatProperty<RecentsView>> taskViewsFloat =
                 orientationHandler.getSplitSelectTaskOffset(
                         TASK_PRIMARY_SPLIT_TRANSLATION, TASK_SECONDARY_SPLIT_TRANSLATION,
                         mLauncher.getDeviceProfile());
diff --git a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
index 3e731e5..69eaf6a 100644
--- a/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
+++ b/quickstep/src/com/android/quickstep/fallback/FallbackRecentsStateController.java
@@ -49,6 +49,7 @@
 import com.android.launcher3.util.MultiPropertyFactory;
 import com.android.quickstep.RecentsActivity;
 import com.android.quickstep.views.ClearAllButton;
+import com.android.quickstep.views.RecentsView;
 
 /**
  * State controller for fallback recents activity
@@ -125,7 +126,7 @@
             setter.add(pa.buildAnim());
         }
 
-        Pair<FloatProperty, FloatProperty> taskViewsFloat =
+        Pair<FloatProperty<RecentsView>, FloatProperty<RecentsView>> taskViewsFloat =
                 mRecentsView.getPagedOrientationHandler().getSplitSelectTaskOffset(
                         TASK_PRIMARY_SPLIT_TRANSLATION, TASK_SECONDARY_SPLIT_TRANSLATION,
                         mActivity.getDeviceProfile());
diff --git a/quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.java b/quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.java
deleted file mode 100644
index f345aeb..0000000
--- a/quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.java
+++ /dev/null
@@ -1,704 +0,0 @@
-/*
- * 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.Point;
-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) {
-        return thumbnailView.getMeasuredWidth() + x - taskInsetMargin;
-    }
-
-    @Override
-    public float getTaskMenuY(float y, View thumbnailView, int stagePosition,
-            View taskMenuView, float taskInsetMargin, View taskViewIcon) {
-        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_expanded_width);
-        }
-        if (stagePosition == SplitConfigurationOptions.STAGE_POSITION_UNDEFINED) {
-            return thumbnailView.getMeasuredWidth();
-        } else {
-            return thumbnailView.getMeasuredHeight();
-        }
-    }
-
-    @Override
-    public int getTaskMenuHeight(float taskInsetMargin, DeviceProfile deviceProfile,
-            float taskMenuX, float taskMenuY) {
-        return (int) (taskMenuX - taskInsetMargin);
-    }
-
-    @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));
-
-        Pair<Point, Point> taskViewSizes =
-                getGroupedTaskViewSizes(dp, splitBoundsConfig, parentWidth, parentHeight);
-
-        int translationY = taskViewSizes.first.y + spaceAboveSnapshot + dividerBar;
-        primarySnapshot.setTranslationY(spaceAboveSnapshot);
-        secondarySnapshot.setTranslationY(translationY - spaceAboveSnapshot);
-
-        primarySnapshot.measure(
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.first.x, View.MeasureSpec.EXACTLY),
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.first.y, View.MeasureSpec.EXACTLY)
-        );
-        secondarySnapshot.measure(
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.second.x, View.MeasureSpec.EXACTLY),
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.second.y, View.MeasureSpec.EXACTLY)
-        );
-    }
-
-    @Override
-    public Pair<Point, Point> getGroupedTaskViewSizes(
-            DeviceProfile dp,
-            SplitBounds splitBoundsConfig,
-            int parentWidth,
-            int parentHeight) {
-        int spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx;
-        int totalThumbnailHeight = parentHeight - spaceAboveSnapshot;
-        int dividerBar = Math.round(totalThumbnailHeight * (splitBoundsConfig.appsStackedVertically
-                ? splitBoundsConfig.dividerHeightPercent
-                : splitBoundsConfig.dividerWidthPercent));
-        float taskPercent = splitBoundsConfig.appsStackedVertically
-                ? splitBoundsConfig.topTaskPercent
-                : splitBoundsConfig.leftTaskPercent;
-
-        Point firstTaskViewSize = new Point(
-                parentWidth,
-                (int) (totalThumbnailHeight * taskPercent)
-        );
-        Point secondTaskViewSize = new Point(
-                parentWidth,
-                totalThumbnailHeight - firstTaskViewSize.y - dividerBar
-        );
-
-        return new Pair<>(firstTaskViewSize, secondTaskViewSize);
-    }
-
-    @Override
-    public void setTaskIconParams(FrameLayout.LayoutParams iconParams, int taskIconMargin,
-            int taskIconHeight, int thumbnailTopMargin, boolean isRtl) {
-        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 setIconAppChipChildrenParams(FrameLayout.LayoutParams iconParams,
-            int chipChildMarginStart) {
-        iconParams.gravity = Gravity.START | Gravity.CENTER_VERTICAL;
-        iconParams.setMarginStart(chipChildMarginStart);
-        iconParams.topMargin = 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.setSplitTranslationY(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()) {
-            IconAppChipView primaryAppChipView = (IconAppChipView) primaryIconView;
-            IconAppChipView secondaryAppChipView = (IconAppChipView) secondaryIconView;
-            if (primaryIconView.getLayoutDirection() == LAYOUT_DIRECTION_RTL) {
-                secondaryAppChipView.setSplitTranslationY(-primarySnapshotHeight);
-                primaryAppChipView.setSplitTranslationY(0);
-            } else {
-                int secondarySnapshotHeight = groupedTaskViewHeight - primarySnapshotHeight;
-                primaryAppChipView.setSplitTranslationY(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();
-    }
-}
diff --git a/quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.kt b/quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.kt
new file mode 100644
index 0000000..39fb158
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/orientation/LandscapePagedViewHandler.kt
@@ -0,0 +1,659 @@
+/*
+ * 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.content.res.Resources
+import android.graphics.Point
+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.View.MeasureSpec
+import android.view.ViewGroup
+import android.view.accessibility.AccessibilityEvent
+import android.widget.FrameLayout
+import android.widget.LinearLayout
+import androidx.core.util.component1
+import androidx.core.util.component2
+import com.android.launcher3.DeviceProfile
+import com.android.launcher3.Flags
+import com.android.launcher3.LauncherAnimUtils
+import com.android.launcher3.R
+import com.android.launcher3.Utilities
+import com.android.launcher3.touch.PagedOrientationHandler.ChildBounds
+import com.android.launcher3.touch.PagedOrientationHandler.Float2DAction
+import com.android.launcher3.touch.PagedOrientationHandler.Int2DAction
+import com.android.launcher3.touch.SingleAxisSwipeDetector
+import com.android.launcher3.util.SplitConfigurationOptions.*
+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 kotlin.math.max
+
+open class LandscapePagedViewHandler : RecentsPagedOrientationHandler {
+    override fun <T> getPrimaryValue(x: T, y: T): T = y
+
+    override fun <T> getSecondaryValue(x: T, y: T): T = x
+
+    override fun getPrimaryValue(x: Int, y: Int): Int = y
+
+    override fun getSecondaryValue(x: Int, y: Int): Int = x
+
+    override fun getPrimaryValue(x: Float, y: Float): Float = y
+
+    override fun getSecondaryValue(x: Float, y: Float): Float = x
+
+    override val isLayoutNaturalToLauncher: Boolean = false
+
+    override fun adjustFloatingIconStartVelocity(velocity: PointF) {
+        val oldX = velocity.x
+        val oldY = velocity.y
+        velocity.set(-oldY, oldX)
+    }
+
+    override fun fixBoundsForHomeAnimStartRect(outStartRect: RectF, 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(0f, outStartRect.top)
+        } else if (outStartRect.left < -deviceProfile.heightPx) {
+            outStartRect.offsetTo(0f, outStartRect.top)
+        }
+    }
+
+    override fun <T> setPrimary(target: T, action: Int2DAction<T>, param: Int) =
+        action.call(target, 0, param)
+
+    override fun <T> setPrimary(target: T, action: Float2DAction<T>, param: Float) =
+        action.call(target, 0f, param)
+
+    override fun <T> setSecondary(target: T, action: Float2DAction<T>, param: Float) =
+        action.call(target, param, 0f)
+
+    override fun <T> set(
+        target: T,
+        action: Int2DAction<T>,
+        primaryParam: Int,
+        secondaryParam: Int
+    ) = action.call(target, secondaryParam, primaryParam)
+
+    override fun getPrimaryDirection(event: MotionEvent, pointerIndex: Int): Float =
+        event.getY(pointerIndex)
+
+    override fun getPrimaryVelocity(velocityTracker: VelocityTracker, pointerId: Int): Float =
+        velocityTracker.getYVelocity(pointerId)
+
+    override fun getMeasuredSize(view: View): Int = view.measuredHeight
+
+    override fun getPrimarySize(view: View): Int = view.height
+
+    override fun getPrimarySize(rect: RectF): Float = rect.height()
+
+    override fun getStart(rect: RectF): Float = rect.top
+
+    override fun getEnd(rect: RectF): Float = rect.bottom
+
+    override fun getClearAllSidePadding(view: View, isRtl: Boolean): Int =
+        if (isRtl) view.paddingBottom / 2 else -view.paddingTop / 2
+
+    override fun getSecondaryDimension(view: View): Int = view.width
+
+    override val primaryViewTranslate: FloatProperty<View> = LauncherAnimUtils.VIEW_TRANSLATE_Y
+
+    override val secondaryViewTranslate: FloatProperty<View> = LauncherAnimUtils.VIEW_TRANSLATE_X
+
+    override fun getPrimaryScroll(view: View): Int = view.scrollY
+
+    override fun getPrimaryScale(view: View): Float = view.scaleY
+
+    override fun setMaxScroll(event: AccessibilityEvent, maxScroll: Int) {
+        event.maxScrollY = maxScroll
+    }
+
+    override fun getRecentsRtlSetting(resources: Resources): Boolean = !Utilities.isRtl(resources)
+
+    override val degreesRotated: Float = 90f
+
+    override val rotation: Int = Surface.ROTATION_90
+
+    override fun setPrimaryScale(view: View, scale: Float) {
+        view.scaleY = scale
+    }
+
+    override fun setSecondaryScale(view: View, scale: Float) {
+        view.scaleX = scale
+    }
+
+    override fun getChildStart(view: View): Int = view.top
+
+    override fun getCenterForPage(view: View, insets: Rect): Int =
+        (view.paddingLeft + view.measuredWidth + insets.left - insets.right - view.paddingRight) / 2
+
+    override fun getScrollOffsetStart(view: View, insets: Rect): Int = insets.top + view.paddingTop
+
+    override fun getScrollOffsetEnd(view: View, insets: Rect): Int =
+        view.height - view.paddingBottom - insets.bottom
+
+    override val secondaryTranslationDirectionFactor: Int = 1
+
+    override fun getSplitTranslationDirectionFactor(
+        stagePosition: Int,
+        deviceProfile: DeviceProfile
+    ): Int = if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) -1 else 1
+
+    override fun getTaskMenuX(
+        x: Float,
+        thumbnailView: View,
+        deviceProfile: DeviceProfile,
+        taskInsetMargin: Float,
+        taskViewIcon: View
+    ): Float = thumbnailView.measuredWidth + x - taskInsetMargin
+
+    override fun getTaskMenuY(
+        y: Float,
+        thumbnailView: View,
+        stagePosition: Int,
+        taskMenuView: View,
+        taskInsetMargin: Float,
+        taskViewIcon: View
+    ): Float {
+        val layoutParams = taskMenuView.layoutParams as BaseDragLayer.LayoutParams
+        var taskMenuY = y + taskInsetMargin
+
+        if (stagePosition == STAGE_POSITION_UNDEFINED) {
+            taskMenuY += (thumbnailView.measuredHeight - layoutParams.width) / 2f
+        }
+
+        return taskMenuY
+    }
+
+    override fun getTaskMenuWidth(
+        thumbnailView: View,
+        deviceProfile: DeviceProfile,
+        @StagePosition stagePosition: Int
+    ): Int =
+        when {
+            Flags.enableOverviewIconMenu() ->
+                thumbnailView.resources.getDimensionPixelSize(
+                    R.dimen.task_thumbnail_icon_menu_expanded_width
+                )
+            stagePosition == STAGE_POSITION_UNDEFINED -> thumbnailView.measuredWidth
+            else -> thumbnailView.measuredHeight
+        }
+
+    override fun getTaskMenuHeight(
+        taskInsetMargin: Float,
+        deviceProfile: DeviceProfile,
+        taskMenuX: Float,
+        taskMenuY: Float
+    ): Int = (taskMenuX - taskInsetMargin).toInt()
+
+    override fun setTaskOptionsMenuLayoutOrientation(
+        deviceProfile: DeviceProfile,
+        taskMenuLayout: LinearLayout,
+        dividerSpacing: Int,
+        dividerDrawable: ShapeDrawable
+    ) {
+        taskMenuLayout.orientation = LinearLayout.VERTICAL
+        dividerDrawable.intrinsicHeight = dividerSpacing
+        taskMenuLayout.dividerDrawable = dividerDrawable
+    }
+
+    override fun setLayoutParamsForTaskMenuOptionItem(
+        lp: LinearLayout.LayoutParams,
+        viewGroup: LinearLayout,
+        deviceProfile: DeviceProfile
+    ) {
+        // Phone fake landscape
+        viewGroup.orientation = LinearLayout.HORIZONTAL
+        lp.width = ViewGroup.LayoutParams.MATCH_PARENT
+        lp.height = ViewGroup.LayoutParams.WRAP_CONTENT
+    }
+
+    override fun getDwbLayoutTranslations(
+        taskViewWidth: Int,
+        taskViewHeight: Int,
+        splitBounds: SplitBounds?,
+        deviceProfile: DeviceProfile,
+        thumbnailViews: Array<View>,
+        desiredTaskId: Int,
+        banner: View
+    ): Pair<Float, Float> {
+        val snapshotParams = thumbnailViews[0].layoutParams as FrameLayout.LayoutParams
+        val isRtl = banner.layoutDirection == View.LAYOUT_DIRECTION_RTL
+        val translationX = banner.height.toFloat()
+
+        val bannerParams = banner.layoutParams as FrameLayout.LayoutParams
+        bannerParams.gravity = Gravity.TOP or if (isRtl) Gravity.END else Gravity.START
+        banner.pivotX = 0f
+        banner.pivotY = 0f
+        banner.rotation = degreesRotated
+
+        if (splitBounds == null) {
+            // Single, fullscreen case
+            bannerParams.width = taskViewHeight - snapshotParams.topMargin
+            return Pair(translationX, snapshotParams.topMargin.toFloat())
+        }
+
+        // Set correct width and translations
+        val translationY: Float
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            bannerParams.width = thumbnailViews[0].measuredHeight
+            translationY = snapshotParams.topMargin.toFloat()
+        } else {
+            bannerParams.width = thumbnailViews[1].measuredHeight
+            val topLeftTaskPlusDividerPercent =
+                if (splitBounds.appsStackedVertically) {
+                    splitBounds.topTaskPercent + splitBounds.dividerHeightPercent
+                } else {
+                    splitBounds.leftTaskPercent + splitBounds.dividerWidthPercent
+                }
+            translationY =
+                snapshotParams.topMargin +
+                    (taskViewHeight - snapshotParams.topMargin) * topLeftTaskPlusDividerPercent
+        }
+
+        return Pair(translationX, translationY)
+    }
+
+    /* ---------- The following are only used by TaskViewTouchHandler. ---------- */
+    override val upDownSwipeDirection: SingleAxisSwipeDetector.Direction =
+        SingleAxisSwipeDetector.HORIZONTAL
+
+    override fun getUpDirection(isRtl: Boolean): Int =
+        if (isRtl) SingleAxisSwipeDetector.DIRECTION_NEGATIVE
+        else SingleAxisSwipeDetector.DIRECTION_POSITIVE
+
+    override fun isGoingUp(displacement: Float, isRtl: Boolean): Boolean =
+        if (isRtl) displacement < 0 else displacement > 0
+
+    override fun getTaskDragDisplacementFactor(isRtl: Boolean): Int = if (isRtl) 1 else -1
+    /* -------------------- */
+
+    override fun getChildBounds(
+        child: View,
+        childStart: Int,
+        pageCenter: Int,
+        layoutChild: Boolean
+    ): ChildBounds {
+        val childHeight = child.measuredHeight
+        val childWidth = child.measuredWidth
+        val childBottom = childStart + childHeight
+        val childLeft = pageCenter - childWidth / 2
+        if (layoutChild) {
+            child.layout(childLeft, childStart, childLeft + childWidth, childBottom)
+        }
+        return ChildBounds(childHeight, childWidth, childBottom, childLeft)
+    }
+
+    override fun getDistanceToBottomOfRect(dp: DeviceProfile, rect: Rect): Int = rect.left
+
+    override fun getSplitPositionOptions(dp: DeviceProfile): List<SplitPositionOption> =
+        // Add "left" side of phone which is actually the top
+        listOf(
+            SplitPositionOption(
+                R.drawable.ic_split_horizontal,
+                R.string.recent_task_option_split_screen,
+                STAGE_POSITION_TOP_OR_LEFT,
+                STAGE_TYPE_MAIN
+            )
+        )
+
+    override fun getInitialSplitPlaceholderBounds(
+        placeholderHeight: Int,
+        placeholderInset: Int,
+        dp: DeviceProfile,
+        @StagePosition stagePosition: Int,
+        out: Rect
+    ) {
+        // In fake land/seascape, the placeholder always needs to go to the "top" of the device,
+        // which is the same bounds as 0 rotation.
+        val width = dp.widthPx
+        val 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.
+        val screenWidth = dp.widthPx
+        val screenHeight = dp.heightPx
+        val totalHeight =
+            (1.0f * screenHeight / 2 * (screenWidth - 2 * placeholderInset) / screenWidth).toInt()
+        out.top -= totalHeight - placeholderHeight
+    }
+
+    override fun updateSplitIconParams(
+        out: View,
+        onScreenRectCenterX: Float,
+        onScreenRectCenterY: Float,
+        fullscreenScaleX: Float,
+        fullscreenScaleY: Float,
+        drawableWidth: Int,
+        drawableHeight: Int,
+        dp: DeviceProfile,
+        @StagePosition stagePosition: Int
+    ) {
+        val insetAdjustment = getPlaceholderSizeAdjustment(dp) / 2f
+        out.x = (onScreenRectCenterX / fullscreenScaleX - 1.0f * drawableWidth / 2)
+        out.y =
+            ((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 fun getPlaceholderSizeAdjustment(dp: DeviceProfile?): Int =
+        max((dp!!.insets.top - dp.splitPlaceholderInset).toDouble(), 0.0).toInt()
+
+    override fun setSplitInstructionsParams(
+        out: View,
+        dp: DeviceProfile,
+        splitInstructionsHeight: Int,
+        splitInstructionsWidth: Int
+    ) {
+        out.pivotX = 0f
+        out.pivotY = splitInstructionsHeight.toFloat()
+        out.rotation = degreesRotated
+        val distanceToEdge =
+            out.resources.getDimensionPixelSize(
+                R.dimen.split_instructions_bottom_margin_phone_landscape
+            )
+        // Adjust for any insets on the left edge
+        val insetCorrectionX = dp.insets.left
+        // Center the view in case of unbalanced insets on top or bottom of screen
+        val insetCorrectionY = (dp.insets.bottom - dp.insets.top) / 2
+        out.translationX = (distanceToEdge - insetCorrectionX).toFloat()
+        out.translationY =
+            (-splitInstructionsHeight - splitInstructionsWidth) / 2f + insetCorrectionY
+        // 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.
+        val lp = out.layoutParams as FrameLayout.LayoutParams
+        lp.gravity = Gravity.LEFT or Gravity.CENTER_VERTICAL
+        out.layoutParams = lp
+    }
+
+    override fun getFinalSplitPlaceholderBounds(
+        splitDividerSize: Int,
+        dp: DeviceProfile,
+        @StagePosition stagePosition: Int,
+        out1: Rect,
+        out2: Rect
+    ) {
+        // In fake land/seascape, the window bounds are always top and bottom half
+        val screenHeight = dp.heightPx
+        val screenWidth = dp.widthPx
+        out1.set(0, 0, screenWidth, screenHeight / 2 - splitDividerSize)
+        out2.set(0, screenHeight / 2 + splitDividerSize, screenWidth, screenHeight)
+    }
+
+    override fun setSplitTaskSwipeRect(
+        dp: DeviceProfile,
+        outRect: Rect,
+        splitInfo: SplitBounds,
+        desiredStagePosition: Int
+    ) {
+        val topLeftTaskPercent: Float
+        val dividerBarPercent: Float
+        if (splitInfo.appsStackedVertically) {
+            topLeftTaskPercent = splitInfo.topTaskPercent
+            dividerBarPercent = splitInfo.dividerHeightPercent
+        } else {
+            topLeftTaskPercent = splitInfo.leftTaskPercent
+            dividerBarPercent = splitInfo.dividerWidthPercent
+        }
+
+        if (desiredStagePosition == STAGE_POSITION_TOP_OR_LEFT) {
+            outRect.bottom = outRect.top + (outRect.height() * topLeftTaskPercent).toInt()
+        } else {
+            outRect.top += (outRect.height() * (topLeftTaskPercent + dividerBarPercent)).toInt()
+        }
+    }
+
+    override fun measureGroupedTaskViewThumbnailBounds(
+        primarySnapshot: View,
+        secondarySnapshot: View,
+        parentWidth: Int,
+        parentHeight: Int,
+        splitBoundsConfig: SplitBounds,
+        dp: DeviceProfile,
+        isRtl: Boolean
+    ) {
+        val primaryParams = primarySnapshot.layoutParams as FrameLayout.LayoutParams
+        val secondaryParams = secondarySnapshot.layoutParams as FrameLayout.LayoutParams
+
+        // 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)
+        val spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx
+        val totalThumbnailHeight = parentHeight - spaceAboveSnapshot
+        val dividerBar =
+            Math.round(
+                totalThumbnailHeight *
+                    if (splitBoundsConfig.appsStackedVertically)
+                        splitBoundsConfig.dividerHeightPercent
+                    else splitBoundsConfig.dividerWidthPercent
+            )
+        val (taskViewFirst, taskViewSecond) =
+            getGroupedTaskViewSizes(dp, splitBoundsConfig, parentWidth, parentHeight)
+
+        primarySnapshot.translationY = spaceAboveSnapshot.toFloat()
+        primarySnapshot.measure(
+            MeasureSpec.makeMeasureSpec(taskViewFirst.x, MeasureSpec.EXACTLY),
+            MeasureSpec.makeMeasureSpec(taskViewFirst.y, MeasureSpec.EXACTLY)
+        )
+        val translationY = taskViewFirst.y + spaceAboveSnapshot + dividerBar
+        secondarySnapshot.translationY = (translationY - spaceAboveSnapshot).toFloat()
+        secondarySnapshot.measure(
+            MeasureSpec.makeMeasureSpec(taskViewSecond.x, MeasureSpec.EXACTLY),
+            MeasureSpec.makeMeasureSpec(taskViewSecond.y, MeasureSpec.EXACTLY)
+        )
+    }
+
+    override fun getGroupedTaskViewSizes(
+        dp: DeviceProfile,
+        splitBoundsConfig: SplitBounds,
+        parentWidth: Int,
+        parentHeight: Int
+    ): Pair<Point, Point> {
+        val spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx
+        val totalThumbnailHeight = parentHeight - spaceAboveSnapshot
+        val dividerBar =
+            Math.round(
+                totalThumbnailHeight *
+                    if (splitBoundsConfig.appsStackedVertically)
+                        splitBoundsConfig.dividerHeightPercent
+                    else splitBoundsConfig.dividerWidthPercent
+            )
+        val taskPercent =
+            if (splitBoundsConfig.appsStackedVertically) {
+                splitBoundsConfig.topTaskPercent
+            } else {
+                splitBoundsConfig.leftTaskPercent
+            }
+        val firstTaskViewSize = Point(parentWidth, (totalThumbnailHeight * taskPercent).toInt())
+        val secondTaskViewSize =
+            Point(parentWidth, totalThumbnailHeight - firstTaskViewSize.y - dividerBar)
+        return Pair(firstTaskViewSize, secondTaskViewSize)
+    }
+
+    override fun setTaskIconParams(
+        iconParams: FrameLayout.LayoutParams,
+        taskIconMargin: Int,
+        taskIconHeight: Int,
+        thumbnailTopMargin: Int,
+        isRtl: Boolean
+    ) {
+        iconParams.gravity =
+            if (isRtl) {
+                Gravity.START or Gravity.CENTER_VERTICAL
+            } else {
+                Gravity.END or Gravity.CENTER_VERTICAL
+            }
+        iconParams.rightMargin = -taskIconHeight - taskIconMargin / 2
+        iconParams.leftMargin = 0
+        iconParams.topMargin = thumbnailTopMargin / 2
+        iconParams.bottomMargin = 0
+    }
+
+    override fun setIconAppChipChildrenParams(
+        iconParams: FrameLayout.LayoutParams,
+        chipChildMarginStart: Int
+    ) {
+        iconParams.gravity = Gravity.START or Gravity.CENTER_VERTICAL
+        iconParams.marginStart = chipChildMarginStart
+        iconParams.topMargin = 0
+    }
+
+    override fun setIconAppChipMenuParams(
+        iconAppChipView: IconAppChipView,
+        iconMenuParams: FrameLayout.LayoutParams,
+        iconMenuMargin: Int,
+        thumbnailTopMargin: Int
+    ) {
+        val isRtl = iconAppChipView.layoutDirection == View.LAYOUT_DIRECTION_RTL
+
+        if (isRtl) {
+            iconMenuParams.gravity = Gravity.START or Gravity.BOTTOM
+            iconMenuParams.marginStart = iconMenuMargin
+            iconMenuParams.bottomMargin = iconMenuMargin
+            iconAppChipView.pivotX = iconMenuParams.width - iconMenuParams.height / 2f
+            iconAppChipView.pivotY = iconMenuParams.height / 2f
+        } else {
+            iconMenuParams.gravity = Gravity.END or Gravity.TOP
+            iconMenuParams.marginStart = 0
+            iconMenuParams.bottomMargin = 0
+            iconAppChipView.pivotX = iconMenuParams.width / 2f
+            iconAppChipView.pivotY = iconMenuParams.width / 2f
+        }
+
+        iconMenuParams.topMargin = iconMenuMargin
+        iconMenuParams.marginEnd = iconMenuMargin
+        iconAppChipView.setSplitTranslationY(0f)
+        iconAppChipView.setRotation(degreesRotated)
+    }
+
+    override fun setSplitIconParams(
+        primaryIconView: View,
+        secondaryIconView: View,
+        taskIconHeight: Int,
+        primarySnapshotWidth: Int,
+        primarySnapshotHeight: Int,
+        groupedTaskViewHeight: Int,
+        groupedTaskViewWidth: Int,
+        isRtl: Boolean,
+        deviceProfile: DeviceProfile,
+        splitConfig: SplitBounds
+    ) {
+        val primaryIconParams = primaryIconView.layoutParams as FrameLayout.LayoutParams
+        val secondaryIconParams =
+            if (Flags.enableOverviewIconMenu())
+                secondaryIconView.layoutParams as FrameLayout.LayoutParams
+            else 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.
+        val fullscreenInsetThickness = (deviceProfile.insets.top - deviceProfile.insets.bottom)
+        val fullscreenMidpointFromBottom = ((deviceProfile.heightPx - fullscreenInsetThickness) / 2)
+        val midpointFromBottomPct = fullscreenMidpointFromBottom.toFloat() / deviceProfile.heightPx
+        val insetPct = fullscreenInsetThickness.toFloat() / deviceProfile.heightPx
+        val spaceAboveSnapshots = deviceProfile.overviewTaskThumbnailTopMarginPx
+        val overviewThumbnailAreaThickness = groupedTaskViewHeight - spaceAboveSnapshots
+        val bottomToMidpointOffset =
+            (overviewThumbnailAreaThickness * midpointFromBottomPct).toInt()
+        val insetOffset = (overviewThumbnailAreaThickness * insetPct).toInt()
+        if (Flags.enableOverviewIconMenu()) {
+            val gravity = if (isRtl) Gravity.BOTTOM or Gravity.START else Gravity.TOP or Gravity.END
+            primaryIconParams.gravity = gravity
+            secondaryIconParams.gravity = gravity
+        } else {
+            primaryIconParams.gravity = Gravity.BOTTOM or if (isRtl) Gravity.START else Gravity.END
+            secondaryIconParams.gravity =
+                Gravity.BOTTOM or if (isRtl) Gravity.START else Gravity.END
+        }
+        primaryIconView.translationX = 0f
+        secondaryIconView.translationX = 0f
+        when {
+            Flags.enableOverviewIconMenu() -> {
+                val primaryAppChipView = primaryIconView as IconAppChipView
+                val secondaryAppChipView = secondaryIconView as IconAppChipView
+                if (primaryIconView.getLayoutDirection() == View.LAYOUT_DIRECTION_RTL) {
+                    secondaryAppChipView.setSplitTranslationY(-primarySnapshotHeight.toFloat())
+                    primaryAppChipView.setSplitTranslationY(0f)
+                } else {
+                    val secondarySnapshotHeight = groupedTaskViewHeight - primarySnapshotHeight
+                    primaryAppChipView.setSplitTranslationY(secondarySnapshotHeight.toFloat())
+                }
+            }
+            splitConfig.initiatedFromSeascape -> {
+                // if the split was initiated from seascape,
+                // the task on the right (secondary) is slightly larger
+                primaryIconView.translationY = (-bottomToMidpointOffset - insetOffset).toFloat()
+                secondaryIconView.translationY =
+                    (-bottomToMidpointOffset - insetOffset + taskIconHeight).toFloat()
+            }
+            else -> {
+                // if not,
+                // the task on the left (primary) is slightly larger
+                primaryIconView.translationY = -bottomToMidpointOffset.toFloat()
+                secondaryIconView.translationY =
+                    (-bottomToMidpointOffset + taskIconHeight).toFloat()
+            }
+        }
+        primaryIconView.layoutParams = primaryIconParams
+        secondaryIconView.layoutParams = secondaryIconParams
+    }
+
+    override fun getDefaultSplitPosition(deviceProfile: DeviceProfile): Int {
+        throw IllegalStateException("Default position not available in fake landscape")
+    }
+
+    override fun <T> getSplitSelectTaskOffset(
+        primary: FloatProperty<T>,
+        secondary: FloatProperty<T>,
+        deviceProfile: DeviceProfile
+    ): Pair<FloatProperty<T>, FloatProperty<T>> = Pair(primary, secondary)
+
+    override fun getFloatingTaskOffscreenTranslationTarget(
+        floatingTask: View,
+        onScreenRect: RectF,
+        @StagePosition stagePosition: Int,
+        dp: DeviceProfile
+    ): Float = floatingTask.translationY - onScreenRect.height()
+
+    override fun setFloatingTaskPrimaryTranslation(
+        floatingTask: View,
+        translation: Float,
+        dp: DeviceProfile
+    ) {
+        floatingTask.translationY = translation
+    }
+
+    override fun getFloatingTaskPrimaryTranslation(floatingTask: View, dp: DeviceProfile): Float =
+        floatingTask.translationY
+}
diff --git a/quickstep/src/com/android/quickstep/orientation/PortraitPagedViewHandler.java b/quickstep/src/com/android/quickstep/orientation/PortraitPagedViewHandler.java
index 5cd9776..62dfd82 100644
--- a/quickstep/src/com/android/quickstep/orientation/PortraitPagedViewHandler.java
+++ b/quickstep/src/com/android/quickstep/orientation/PortraitPagedViewHandler.java
@@ -795,7 +795,7 @@
     }
 
     @Override
-    public Float getFloatingTaskPrimaryTranslation(View floatingTask, DeviceProfile dp) {
+    public float getFloatingTaskPrimaryTranslation(View floatingTask, DeviceProfile dp) {
         return dp.isLeftRightSplit
                 ? floatingTask.getTranslationX()
                 : floatingTask.getTranslationY();
diff --git a/quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.java b/quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.java
deleted file mode 100644
index 4b65d53..0000000
--- a/quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.java
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- * 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.Point;
-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);
-
-    /**
-     * Creates two Points representing the dimensions of the two tasks in a GroupedTaskView
-     *
-     * @return first -> primary task snapshot, second -> secondary task snapshot.
-     * x -> width, y -> height
-     */
-    Pair<Point, Point> getGroupedTaskViewSizes(DeviceProfile dp, SplitBounds splitBoundsConfig,
-            int parentWidth, int parentHeight);
-
-    // Overview TaskMenuView methods
-    /** Sets layout params on a task's app icon. Only use this when app chip is disabled. */
-    void setTaskIconParams(FrameLayout.LayoutParams iconParams,
-            int taskIconMargin, int taskIconHeight, int thumbnailTopMargin, boolean isRtl);
-
-    /**
-     * Sets layout params on the children of an app chip. Only use this when app chip is enabled.
-     */
-    void setIconAppChipChildrenParams(
-            FrameLayout.LayoutParams iconParams, int chipChildMarginStart);
-
-    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);
-
-    int getTaskMenuHeight(float taskInsetMargin, DeviceProfile deviceProfile, float taskMenuX,
-            float taskMenuY);
-    /**
-     * 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);
-}
diff --git a/quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.kt b/quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.kt
new file mode 100644
index 0000000..6c82890
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/orientation/RecentsPagedOrientationHandler.kt
@@ -0,0 +1,379 @@
+/*
+ * 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.Point
+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.PagedOrientationHandler.Float2DAction
+import com.android.launcher3.touch.PagedOrientationHandler.Int2DAction
+import com.android.launcher3.touch.SingleAxisSwipeDetector
+import com.android.launcher3.util.SplitConfigurationOptions
+import com.android.launcher3.util.SplitConfigurationOptions.SplitPositionOption
+import com.android.launcher3.util.SplitConfigurationOptions.StagePosition
+import com.android.quickstep.views.IconAppChipView
+
+/**
+ * Abstraction layer to separate horizontal and vertical specific implementations for
+ * [com.android.quickstep.views.RecentsView]. Majority of these implementations are (should be) as
+ * simple as choosing the correct X and Y analogous methods.
+ */
+interface RecentsPagedOrientationHandler : PagedOrientationHandler {
+    fun <T> setSecondary(target: T, action: Float2DAction<T>, param: Float)
+
+    operator fun <T> set(target: T, action: Int2DAction<T>, primaryParam: Int, secondaryParam: Int)
+
+    fun getPrimarySize(view: View): Int
+
+    fun getPrimarySize(rect: RectF): Float
+
+    val secondaryTranslationDirectionFactor: Int
+
+    val degreesRotated: Float
+
+    val rotation: Int
+
+    val isLayoutNaturalToLauncher: Boolean
+
+    fun <T> getPrimaryValue(x: T, y: T): T
+
+    fun <T> getSecondaryValue(x: T, y: T): T
+
+    fun setPrimaryScale(view: View, scale: Float)
+
+    fun setSecondaryScale(view: View, scale: Float)
+
+    fun getStart(rect: RectF): Float
+
+    fun getEnd(rect: RectF): Float
+
+    fun getClearAllSidePadding(view: View, isRtl: Boolean): Int
+
+    fun getSecondaryDimension(view: View): Int
+
+    val primaryViewTranslate: FloatProperty<View>
+    val secondaryViewTranslate: FloatProperty<View>
+
+    fun getSplitTranslationDirectionFactor(
+        @StagePosition stagePosition: Int,
+        deviceProfile: DeviceProfile
+    ): Int
+
+    fun <T> getSplitSelectTaskOffset(
+        primary: FloatProperty<T>,
+        secondary: FloatProperty<T>,
+        deviceProfile: DeviceProfile
+    ): Pair<FloatProperty<T>, FloatProperty<T>>
+
+    fun getDistanceToBottomOfRect(dp: DeviceProfile, rect: Rect): Int
+
+    fun getSplitPositionOptions(dp: DeviceProfile): List<SplitPositionOption>
+
+    /** @param placeholderHeight height of placeholder view in portrait, width in landscape */
+    fun getInitialSplitPlaceholderBounds(
+        placeholderHeight: Int,
+        placeholderInset: Int,
+        dp: DeviceProfile,
+        @StagePosition stagePosition: Int,
+        out: Rect
+    )
+
+    /**
+     * 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.
+     */
+    fun updateSplitIconParams(
+        out: View,
+        onScreenRectCenterX: Float,
+        onScreenRectCenterY: Float,
+        fullscreenScaleX: Float,
+        fullscreenScaleY: Float,
+        drawableWidth: Int,
+        drawableHeight: Int,
+        dp: DeviceProfile,
+        @StagePosition stagePosition: Int
+    )
+
+    /**
+     * 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.
+     */
+    fun setSplitInstructionsParams(
+        out: View,
+        dp: DeviceProfile,
+        splitInstructionsHeight: Int,
+        splitInstructionsWidth: Int
+    )
+
+    /**
+     * @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}
+     */
+    fun getFinalSplitPlaceholderBounds(
+        splitDividerSize: Int,
+        dp: DeviceProfile,
+        @StagePosition stagePosition: Int,
+        out1: Rect,
+        out2: Rect
+    )
+
+    fun getDefaultSplitPosition(deviceProfile: DeviceProfile): Int
+
+    /**
+     * @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
+     */
+    fun setSplitTaskSwipeRect(
+        dp: DeviceProfile,
+        outRect: Rect,
+        splitInfo: SplitConfigurationOptions.SplitBounds,
+        @StagePosition desiredStagePosition: Int
+    )
+
+    fun measureGroupedTaskViewThumbnailBounds(
+        primarySnapshot: View,
+        secondarySnapshot: View,
+        parentWidth: Int,
+        parentHeight: Int,
+        splitBoundsConfig: SplitConfigurationOptions.SplitBounds,
+        dp: DeviceProfile,
+        isRtl: Boolean
+    )
+
+    /**
+     * Creates two Points representing the dimensions of the two tasks in a GroupedTaskView
+     *
+     * @return first -> primary task snapshot, second -> secondary task snapshot. x -> width, y ->
+     *   height
+     */
+    fun getGroupedTaskViewSizes(
+        dp: DeviceProfile,
+        splitBoundsConfig: SplitConfigurationOptions.SplitBounds,
+        parentWidth: Int,
+        parentHeight: Int
+    ): Pair<Point, Point>
+    // Overview TaskMenuView methods
+    /** Sets layout params on a task's app icon. Only use this when app chip is disabled. */
+    fun setTaskIconParams(
+        iconParams: FrameLayout.LayoutParams,
+        taskIconMargin: Int,
+        taskIconHeight: Int,
+        thumbnailTopMargin: Int,
+        isRtl: Boolean
+    )
+
+    /**
+     * Sets layout params on the children of an app chip. Only use this when app chip is enabled.
+     */
+    fun setIconAppChipChildrenParams(
+        iconParams: FrameLayout.LayoutParams,
+        chipChildMarginStart: Int
+    )
+
+    fun setIconAppChipMenuParams(
+        iconAppChipView: IconAppChipView,
+        iconMenuParams: FrameLayout.LayoutParams,
+        iconMenuMargin: Int,
+        thumbnailTopMargin: Int
+    )
+
+    fun setSplitIconParams(
+        primaryIconView: View,
+        secondaryIconView: View,
+        taskIconHeight: Int,
+        primarySnapshotWidth: Int,
+        primarySnapshotHeight: Int,
+        groupedTaskViewHeight: Int,
+        groupedTaskViewWidth: Int,
+        isRtl: Boolean,
+        deviceProfile: DeviceProfile,
+        splitConfig: SplitConfigurationOptions.SplitBounds
+    )
+
+    /*
+     * 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.
+     */
+    fun getTaskMenuX(
+        x: Float,
+        thumbnailView: View,
+        deviceProfile: DeviceProfile,
+        taskInsetMargin: Float,
+        taskViewIcon: View
+    ): Float
+
+    fun getTaskMenuY(
+        y: Float,
+        thumbnailView: View,
+        stagePosition: Int,
+        taskMenuView: View,
+        taskInsetMargin: Float,
+        taskViewIcon: View
+    ): Float
+
+    fun getTaskMenuWidth(
+        thumbnailView: View,
+        deviceProfile: DeviceProfile,
+        @StagePosition stagePosition: Int
+    ): Int
+
+    fun getTaskMenuHeight(
+        taskInsetMargin: Float,
+        deviceProfile: DeviceProfile,
+        taskMenuX: Float,
+        taskMenuY: Float
+    ): Int
+
+    /**
+     * Sets linear layout orientation for [com.android.launcher3.popup.SystemShortcut] items inside
+     * task menu view.
+     */
+    fun setTaskOptionsMenuLayoutOrientation(
+        deviceProfile: DeviceProfile,
+        taskMenuLayout: LinearLayout,
+        dividerSpacing: Int,
+        dividerDrawable: ShapeDrawable
+    )
+
+    /**
+     * Sets layout param attributes for [com.android.launcher3.popup.SystemShortcut] child views
+     * inside task menu view.
+     */
+    fun setLayoutParamsForTaskMenuOptionItem(
+        lp: LinearLayout.LayoutParams,
+        viewGroup: LinearLayout,
+        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.
+     */
+    fun getDwbLayoutTranslations(
+        taskViewWidth: Int,
+        taskViewHeight: Int,
+        splitBounds: SplitConfigurationOptions.SplitBounds?,
+        deviceProfile: DeviceProfile,
+        thumbnailViews: Array<View>,
+        desiredTaskId: Int,
+        banner: View
+    ): Pair<Float, Float>
+    // The following are only used by TaskViewTouchHandler.
+
+    /** @return Either VERTICAL or HORIZONTAL. */
+    val upDownSwipeDirection: SingleAxisSwipeDetector.Direction
+
+    /** @return Given [.getUpDownSwipeDirection], whether POSITIVE or NEGATIVE is up. */
+    fun getUpDirection(isRtl: Boolean): Int
+
+    /** @return Whether the displacement is going towards the top of the screen. */
+    fun isGoingUp(displacement: Float, isRtl: Boolean): Boolean
+
+    /** @return Either 1 or -1, a factor to multiply by so the animation goes the correct way. */
+    fun getTaskDragDisplacementFactor(isRtl: Boolean): Int
+
+    /**
+     * Maps the velocity from the coordinate plane of the foreground app to that of Launcher's
+     * (which now will always be portrait)
+     */
+    fun adjustFloatingIconStartVelocity(velocity: PointF)
+
+    /**
+     * Ensures that outStartRect left bound is within the DeviceProfile's visual boundaries
+     *
+     * @param outStartRect The start rect that will directly be modified
+     */
+    fun fixBoundsForHomeAnimStartRect(outStartRect: RectF, 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.
+     */
+    fun getFloatingTaskOffscreenTranslationTarget(
+        floatingTask: View,
+        onScreenRect: RectF,
+        @StagePosition stagePosition: Int,
+        dp: DeviceProfile
+    ): Float
+
+    /**
+     * 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.
+     */
+    fun setFloatingTaskPrimaryTranslation(floatingTask: View, translation: Float, dp: DeviceProfile)
+
+    /**
+     * 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.
+     */
+    fun getFloatingTaskPrimaryTranslation(floatingTask: View, dp: DeviceProfile): Float
+
+    companion object {
+        @JvmField val PORTRAIT: RecentsPagedOrientationHandler = PortraitPagedViewHandler()
+        @JvmField val LANDSCAPE: RecentsPagedOrientationHandler = LandscapePagedViewHandler()
+        @JvmField val SEASCAPE: RecentsPagedOrientationHandler = SeascapePagedViewHandler()
+    }
+}
diff --git a/quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.java b/quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.java
deleted file mode 100644
index 89c678c..0000000
--- a/quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.java
+++ /dev/null
@@ -1,418 +0,0 @@
-/*
- * 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.Point;
-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) {
-        return x + taskInsetMargin;
-    }
-
-    @Override
-    public float getTaskMenuY(float y, View thumbnailView, int stagePosition,
-            View taskMenuView, float taskInsetMargin, View taskViewIcon) {
-        if (enableOverviewIconMenu()) {
-            return y;
-        }
-        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 int getTaskMenuHeight(float taskInsetMargin, DeviceProfile deviceProfile,
-            float taskMenuX, float taskMenuY) {
-        return (int) (deviceProfile.availableWidthPx - taskInsetMargin - taskMenuX);
-    }
-
-    @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.gravity = (isRtl ? END : START) | CENTER_VERTICAL;
-        iconParams.setMargins(-taskIconHeight - taskIconMargin / 2, thumbnailTopMargin / 2, 0, 0);
-    }
-
-    @Override
-    public void setIconAppChipChildrenParams(FrameLayout.LayoutParams iconParams,
-            int chipChildMarginStart) {
-        iconParams.setMargins(0, 0, 0, 0);
-        iconParams.setMarginStart(chipChildMarginStart);
-        iconParams.gravity = Gravity.START | Gravity.CENTER_VERTICAL;
-    }
-
-    @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.setSplitTranslationY(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()) {
-            IconAppChipView primaryAppChipView = (IconAppChipView) primaryIconView;
-            IconAppChipView secondaryAppChipView = (IconAppChipView) secondaryIconView;
-            if (isRtl) {
-                primaryAppChipView.setSplitTranslationY(
-                        groupedTaskViewHeight - primarySnapshotHeight);
-                secondaryAppChipView.setSplitTranslationY(0);
-            } else {
-                secondaryAppChipView.setSplitTranslationY(-primarySnapshotHeight);
-                primaryAppChipView.setSplitTranslationY(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));
-
-        Pair<Point, Point> taskViewSizes =
-                getGroupedTaskViewSizes(dp, splitBoundsConfig, parentWidth, parentHeight);
-
-        secondarySnapshot.setTranslationY(0);
-        primarySnapshot.setTranslationY(taskViewSizes.second.y + spaceAboveSnapshot + dividerBar);
-
-        primarySnapshot.measure(
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.first.x, View.MeasureSpec.EXACTLY),
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.first.y, View.MeasureSpec.EXACTLY)
-        );
-        secondarySnapshot.measure(
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.second.x, View.MeasureSpec.EXACTLY),
-                View.MeasureSpec.makeMeasureSpec(taskViewSizes.second.y, View.MeasureSpec.EXACTLY)
-        );
-    }
-
-    @Override
-    public Pair<Point, Point> getGroupedTaskViewSizes(
-            DeviceProfile dp,
-            SplitBounds splitBoundsConfig,
-            int parentWidth,
-            int parentHeight) {
-        // 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));
-        float taskPercent = splitBoundsConfig.appsStackedVertically
-                ? splitBoundsConfig.topTaskPercent
-                : splitBoundsConfig.leftTaskPercent;
-
-        Point firstTaskViewSize = new Point(
-                parentWidth,
-                (int) (totalThumbnailHeight * taskPercent)
-        );
-        Point secondTaskViewSize = new Point(
-                parentWidth,
-                totalThumbnailHeight - firstTaskViewSize.y - dividerBar
-        );
-
-        return new Pair<>(firstTaskViewSize, secondTaskViewSize);
-    }
-
-    /* ---------- 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;
-    }
-
-    /* -------------------- */
-}
diff --git a/quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.kt b/quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.kt
new file mode 100644
index 0000000..0c78b8f
--- /dev/null
+++ b/quickstep/src/com/android/quickstep/orientation/SeascapePagedViewHandler.kt
@@ -0,0 +1,433 @@
+/*
+ * 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.content.res.Resources
+import android.graphics.Point
+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.view.View.MeasureSpec
+import android.widget.FrameLayout
+import androidx.core.util.component1
+import androidx.core.util.component2
+import com.android.launcher3.DeviceProfile
+import com.android.launcher3.Flags
+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.views.BaseDragLayer
+import com.android.quickstep.views.IconAppChipView
+
+class SeascapePagedViewHandler : LandscapePagedViewHandler() {
+    override val secondaryTranslationDirectionFactor: Int = -1
+
+    override fun getSplitTranslationDirectionFactor(
+        stagePosition: Int,
+        deviceProfile: DeviceProfile
+    ): Int = if (stagePosition == STAGE_POSITION_BOTTOM_OR_RIGHT) -1 else 1
+
+    override fun getRecentsRtlSetting(resources: Resources): Boolean = Utilities.isRtl(resources)
+
+    override val degreesRotated: Float = 270f
+
+    override val rotation: Int = Surface.ROTATION_270
+
+    override fun adjustFloatingIconStartVelocity(velocity: PointF) =
+        velocity.set(velocity.y, -velocity.x)
+
+    override fun getTaskMenuX(
+        x: Float,
+        thumbnailView: View,
+        deviceProfile: DeviceProfile,
+        taskInsetMargin: Float,
+        taskViewIcon: View
+    ): Float = x + taskInsetMargin
+
+    override fun getTaskMenuY(
+        y: Float,
+        thumbnailView: View,
+        stagePosition: Int,
+        taskMenuView: View,
+        taskInsetMargin: Float,
+        taskViewIcon: View
+    ): Float {
+        if (Flags.enableOverviewIconMenu()) {
+            return y
+        }
+        val lp = taskMenuView.layoutParams as BaseDragLayer.LayoutParams
+        val taskMenuWidth = lp.width
+        return if (stagePosition == STAGE_POSITION_UNDEFINED) {
+            y + taskInsetMargin + (thumbnailView.measuredHeight + taskMenuWidth) / 2f
+        } else {
+            y + taskMenuWidth + taskInsetMargin
+        }
+    }
+
+    override fun getTaskMenuHeight(
+        taskInsetMargin: Float,
+        deviceProfile: DeviceProfile,
+        taskMenuX: Float,
+        taskMenuY: Float
+    ): Int = (deviceProfile.availableWidthPx - taskInsetMargin - taskMenuX).toInt()
+
+    override fun setSplitTaskSwipeRect(
+        dp: DeviceProfile,
+        outRect: Rect,
+        splitInfo: SplitBounds,
+        desiredStagePosition: Int
+    ) {
+        val topLeftTaskPercent: Float
+        val dividerBarPercent: Float
+        if (splitInfo.appsStackedVertically) {
+            topLeftTaskPercent = splitInfo.topTaskPercent
+            dividerBarPercent = splitInfo.dividerHeightPercent
+        } else {
+            topLeftTaskPercent = splitInfo.leftTaskPercent
+            dividerBarPercent = 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 == STAGE_POSITION_TOP_OR_LEFT) {
+            outRect.top += (outRect.height() * (1 - topLeftTaskPercent)).toInt()
+        } else {
+            outRect.bottom -= (outRect.height() * (topLeftTaskPercent + dividerBarPercent)).toInt()
+        }
+    }
+
+    override fun getDwbLayoutTranslations(
+        taskViewWidth: Int,
+        taskViewHeight: Int,
+        splitBounds: SplitBounds?,
+        deviceProfile: DeviceProfile,
+        thumbnailViews: Array<View>,
+        desiredTaskId: Int,
+        banner: View
+    ): Pair<Float, Float> {
+        val snapshotParams = thumbnailViews[0].layoutParams as FrameLayout.LayoutParams
+        val isRtl = banner.layoutDirection == View.LAYOUT_DIRECTION_RTL
+
+        val bannerParams = banner.layoutParams as FrameLayout.LayoutParams
+        bannerParams.gravity = Gravity.BOTTOM or if (isRtl) Gravity.END else Gravity.START
+        banner.pivotX = 0f
+        banner.pivotY = 0f
+        banner.rotation = degreesRotated
+
+        val translationX: Float = (taskViewWidth - banner.height).toFloat()
+        if (splitBounds == null) {
+            // Single, fullscreen case
+            bannerParams.width = taskViewHeight - snapshotParams.topMargin
+            return Pair(translationX, banner.height.toFloat())
+        }
+
+        // Set correct width and translations
+        val translationY: Float
+        if (desiredTaskId == splitBounds.leftTopTaskId) {
+            bannerParams.width = thumbnailViews[0].measuredHeight
+            val bottomRightTaskPlusDividerPercent =
+                if (splitBounds.appsStackedVertically) {
+                    1f - splitBounds.topTaskPercent
+                } else {
+                    1f - splitBounds.leftTaskPercent
+                }
+            translationY =
+                banner.height -
+                    (taskViewHeight - snapshotParams.topMargin) * bottomRightTaskPlusDividerPercent
+        } else {
+            bannerParams.width = thumbnailViews[1].measuredHeight
+            translationY = banner.height.toFloat()
+        }
+
+        return Pair(translationX, translationY)
+    }
+
+    override fun getDistanceToBottomOfRect(dp: DeviceProfile, rect: Rect): Int =
+        dp.widthPx - rect.right
+
+    override fun getSplitPositionOptions(dp: DeviceProfile): List<SplitPositionOption> =
+        // Add "right" option which is actually the top
+        listOf(
+            SplitPositionOption(
+                R.drawable.ic_split_horizontal,
+                R.string.recent_task_option_split_screen,
+                STAGE_POSITION_BOTTOM_OR_RIGHT,
+                STAGE_TYPE_MAIN
+            )
+        )
+
+    override fun setSplitInstructionsParams(
+        out: View,
+        dp: DeviceProfile,
+        splitInstructionsHeight: Int,
+        splitInstructionsWidth: Int
+    ) {
+        out.pivotX = 0f
+        out.pivotY = splitInstructionsHeight.toFloat()
+        out.rotation = degreesRotated
+        val distanceToEdge =
+            out.resources.getDimensionPixelSize(
+                R.dimen.split_instructions_bottom_margin_phone_landscape
+            )
+        // Adjust for any insets on the right edge
+        val insetCorrectionX = dp.insets.right
+        // Center the view in case of unbalanced insets on top or bottom of screen
+        val insetCorrectionY = (dp.insets.bottom - dp.insets.top) / 2
+        out.translationX = (splitInstructionsWidth - distanceToEdge + insetCorrectionX).toFloat()
+        out.translationY =
+            (-splitInstructionsHeight + splitInstructionsWidth) / 2f + insetCorrectionY
+        // 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.
+        val lp = out.layoutParams as FrameLayout.LayoutParams
+        lp.gravity = Gravity.RIGHT or Gravity.CENTER_VERTICAL
+        out.layoutParams = lp
+    }
+
+    override fun setTaskIconParams(
+        iconParams: FrameLayout.LayoutParams,
+        taskIconMargin: Int,
+        taskIconHeight: Int,
+        thumbnailTopMargin: Int,
+        isRtl: Boolean
+    ) {
+        iconParams.gravity =
+            if (isRtl) {
+                Gravity.END or Gravity.CENTER_VERTICAL
+            } else {
+                Gravity.START or Gravity.CENTER_VERTICAL
+            }
+        iconParams.setMargins(-taskIconHeight - taskIconMargin / 2, thumbnailTopMargin / 2, 0, 0)
+    }
+
+    override fun setIconAppChipChildrenParams(
+        iconParams: FrameLayout.LayoutParams,
+        chipChildMarginStart: Int
+    ) {
+        iconParams.setMargins(0, 0, 0, 0)
+        iconParams.marginStart = chipChildMarginStart
+        iconParams.gravity = Gravity.START or Gravity.CENTER_VERTICAL
+    }
+
+    override fun setIconAppChipMenuParams(
+        iconAppChipView: IconAppChipView,
+        iconMenuParams: FrameLayout.LayoutParams,
+        iconMenuMargin: Int,
+        thumbnailTopMargin: Int
+    ) {
+        val isRtl = iconAppChipView.layoutDirection == View.LAYOUT_DIRECTION_RTL
+        val iconCenter = iconAppChipView.getHeight() / 2f
+
+        if (isRtl) {
+            iconMenuParams.gravity = Gravity.TOP or Gravity.END
+            iconMenuParams.topMargin = iconMenuMargin
+            iconMenuParams.marginEnd = thumbnailTopMargin
+            // Use half menu height to place the pivot within the X/Y center of icon in the menu.
+            iconAppChipView.pivotX = iconMenuParams.width / 2f
+            iconAppChipView.pivotY = iconMenuParams.width / 2f
+        } else {
+            iconMenuParams.gravity = Gravity.BOTTOM or Gravity.START
+            iconMenuParams.topMargin = 0
+            iconMenuParams.marginEnd = 0
+            iconAppChipView.pivotX = iconCenter
+            iconAppChipView.pivotY = iconCenter - iconMenuMargin
+        }
+        iconMenuParams.marginStart = 0
+        iconMenuParams.bottomMargin = 0
+        iconAppChipView.setSplitTranslationY(0f)
+        iconAppChipView.setRotation(degreesRotated)
+    }
+
+    override fun setSplitIconParams(
+        primaryIconView: View,
+        secondaryIconView: View,
+        taskIconHeight: Int,
+        primarySnapshotWidth: Int,
+        primarySnapshotHeight: Int,
+        groupedTaskViewHeight: Int,
+        groupedTaskViewWidth: Int,
+        isRtl: Boolean,
+        deviceProfile: DeviceProfile,
+        splitConfig: SplitBounds
+    ) {
+        super.setSplitIconParams(
+            primaryIconView,
+            secondaryIconView,
+            taskIconHeight,
+            primarySnapshotWidth,
+            primarySnapshotHeight,
+            groupedTaskViewHeight,
+            groupedTaskViewWidth,
+            isRtl,
+            deviceProfile,
+            splitConfig
+        )
+        val primaryIconParams = primaryIconView.layoutParams as FrameLayout.LayoutParams
+        val secondaryIconParams = secondaryIconView.layoutParams as FrameLayout.LayoutParams
+
+        // 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.
+        val fullscreenInsetThickness = (deviceProfile.insets.top - deviceProfile.insets.bottom)
+        val fullscreenMidpointFromBottom = (deviceProfile.heightPx - fullscreenInsetThickness) / 2
+        val midpointFromBottomPct = fullscreenMidpointFromBottom.toFloat() / deviceProfile.heightPx
+        val insetPct = fullscreenInsetThickness.toFloat() / deviceProfile.heightPx
+        val spaceAboveSnapshots = deviceProfile.overviewTaskThumbnailTopMarginPx
+        val overviewThumbnailAreaThickness = groupedTaskViewHeight - spaceAboveSnapshots
+        val bottomToMidpointOffset =
+            (overviewThumbnailAreaThickness * midpointFromBottomPct).toInt()
+        val insetOffset = (overviewThumbnailAreaThickness * insetPct).toInt()
+        val gravity = if (isRtl) Gravity.TOP or Gravity.END else Gravity.BOTTOM or Gravity.START
+        primaryIconParams.gravity = gravity
+        secondaryIconParams.gravity = gravity
+        primaryIconView.translationX = 0f
+        secondaryIconView.translationX = 0f
+        when {
+            Flags.enableOverviewIconMenu() -> {
+                val primaryAppChipView = primaryIconView as IconAppChipView
+                val secondaryAppChipView = secondaryIconView as IconAppChipView
+                if (isRtl) {
+                    primaryAppChipView.setSplitTranslationY(
+                        (groupedTaskViewHeight - primarySnapshotHeight).toFloat()
+                    )
+                    secondaryAppChipView.setSplitTranslationY(0f)
+                } else {
+                    secondaryAppChipView.setSplitTranslationY(-primarySnapshotHeight.toFloat())
+                    primaryAppChipView.setSplitTranslationY(0f)
+                }
+            }
+            splitConfig.initiatedFromSeascape -> {
+                // if the split was initiated from seascape,
+                // the task on the right (secondary) is slightly larger
+                if (isRtl) {
+                    primaryIconView.translationY =
+                        (bottomToMidpointOffset - insetOffset + taskIconHeight).toFloat()
+                    secondaryIconView.translationY =
+                        (bottomToMidpointOffset - insetOffset).toFloat()
+                } else {
+                    primaryIconView.translationY =
+                        (-bottomToMidpointOffset - insetOffset + taskIconHeight).toFloat()
+                    secondaryIconView.translationY =
+                        (-bottomToMidpointOffset - insetOffset).toFloat()
+                }
+            }
+            else -> {
+                // if not,
+                // the task on the left (primary) is slightly larger
+                if (isRtl) {
+                    primaryIconView.translationY =
+                        (bottomToMidpointOffset + taskIconHeight).toFloat()
+                    secondaryIconView.translationY = bottomToMidpointOffset.toFloat()
+                } else {
+                    primaryIconView.translationY =
+                        (-bottomToMidpointOffset + taskIconHeight).toFloat()
+                    secondaryIconView.translationY = -bottomToMidpointOffset.toFloat()
+                }
+            }
+        }
+        primaryIconView.layoutParams = primaryIconParams
+        secondaryIconView.layoutParams = secondaryIconParams
+    }
+
+    override fun measureGroupedTaskViewThumbnailBounds(
+        primarySnapshot: View,
+        secondarySnapshot: View,
+        parentWidth: Int,
+        parentHeight: Int,
+        splitBoundsConfig: SplitBounds,
+        dp: DeviceProfile,
+        isRtl: Boolean
+    ) {
+        val primaryParams = primarySnapshot.layoutParams as FrameLayout.LayoutParams
+        val secondaryParams = secondarySnapshot.layoutParams as FrameLayout.LayoutParams
+
+        // 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)
+        val spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx
+        val totalThumbnailHeight = parentHeight - spaceAboveSnapshot
+        val dividerBar =
+            Math.round(
+                totalThumbnailHeight *
+                    if (splitBoundsConfig.appsStackedVertically)
+                        splitBoundsConfig.dividerHeightPercent
+                    else splitBoundsConfig.dividerWidthPercent
+            )
+        val (taskViewFirst, taskViewSecond) =
+            getGroupedTaskViewSizes(dp, splitBoundsConfig, parentWidth, parentHeight)
+        secondarySnapshot.translationY = 0f
+        primarySnapshot.translationY =
+            (taskViewSecond.y + spaceAboveSnapshot + dividerBar).toFloat()
+        primarySnapshot.measure(
+            MeasureSpec.makeMeasureSpec(taskViewFirst.x, MeasureSpec.EXACTLY),
+            MeasureSpec.makeMeasureSpec(taskViewFirst.y, MeasureSpec.EXACTLY)
+        )
+        secondarySnapshot.measure(
+            MeasureSpec.makeMeasureSpec(taskViewSecond.x, MeasureSpec.EXACTLY),
+            MeasureSpec.makeMeasureSpec(taskViewSecond.y, MeasureSpec.EXACTLY)
+        )
+    }
+
+    override fun getGroupedTaskViewSizes(
+        dp: DeviceProfile,
+        splitBoundsConfig: SplitBounds,
+        parentWidth: Int,
+        parentHeight: Int
+    ): Pair<Point, Point> {
+        // 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)
+        val spaceAboveSnapshot = dp.overviewTaskThumbnailTopMarginPx
+        val totalThumbnailHeight = parentHeight - spaceAboveSnapshot
+        val dividerBar =
+            Math.round(
+                totalThumbnailHeight *
+                    if (splitBoundsConfig.appsStackedVertically)
+                        splitBoundsConfig.dividerHeightPercent
+                    else splitBoundsConfig.dividerWidthPercent
+            )
+        val taskPercent =
+            if (splitBoundsConfig.appsStackedVertically) {
+                splitBoundsConfig.topTaskPercent
+            } else {
+                splitBoundsConfig.leftTaskPercent
+            }
+        val firstTaskViewSize = Point(parentWidth, (totalThumbnailHeight * taskPercent).toInt())
+        val secondTaskViewSize =
+            Point(parentWidth, totalThumbnailHeight - firstTaskViewSize.y - dividerBar)
+        return Pair(firstTaskViewSize, secondTaskViewSize)
+    }
+
+    /* ---------- The following are only used by TaskViewTouchHandler. ---------- */
+    override val upDownSwipeDirection: SingleAxisSwipeDetector.Direction =
+        SingleAxisSwipeDetector.HORIZONTAL
+
+    override fun getUpDirection(isRtl: Boolean): Int =
+        if (isRtl) SingleAxisSwipeDetector.DIRECTION_POSITIVE
+        else SingleAxisSwipeDetector.DIRECTION_NEGATIVE
+
+    override fun isGoingUp(displacement: Float, isRtl: Boolean): Boolean =
+        if (isRtl) displacement > 0 else displacement < 0
+
+    override fun getTaskDragDisplacementFactor(isRtl: Boolean): Int = if (isRtl) -1 else 1
+    /* -------------------- */
+}
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index 1c8abaf..34feee4 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -5032,7 +5032,7 @@
         firstFloatingTaskView.update(mTempRectF, /*progress=*/1f);
 
         RecentsPagedOrientationHandler orientationHandler = getPagedOrientationHandler();
-        Pair<FloatProperty, FloatProperty> taskViewsFloat =
+        Pair<FloatProperty<RecentsView>, FloatProperty<RecentsView>> taskViewsFloat =
                 orientationHandler.getSplitSelectTaskOffset(
                         TASK_PRIMARY_SPLIT_TRANSLATION, TASK_SECONDARY_SPLIT_TRANSLATION,
                         mActivity.getDeviceProfile());