From 5514e76d40b1d870cb81f35046aef0da80f91b1a Mon Sep 17 00:00:00 2001
From: Jerry Chang <chenghsiuchang@google.com>
Date: Thu, 26 Aug 2021 11:31:56 +0800
Subject: [PATCH] Draw rounded corners beside split divider bar

Draw rounded corners beside divider bar which inset with task bar if
the task bar is expanded.

Bug: 196272915
Bug: 182511830
Test: atest WMShellUnitTests
Test: manul check the rounded corners rendered in proper position.
Change-Id: I14c5a9416d52bf06b3e4c8ac843c5a65c0b940b8
---
 .../res/drawable/split_rounded_bottom.xml     | 30 +++++++
 .../Shell/res/drawable/split_rounded_left.xml | 30 +++++++
 .../res/drawable/split_rounded_right.xml      | 30 +++++++
 .../Shell/res/drawable/split_rounded_top.xml  | 26 ++++++
 .../Shell/res/layout/split_divider.xml        | 27 +++++--
 .../Shell/res/values-land/styles.xml          | 14 ++++
 libs/WindowManager/Shell/res/values/dimen.xml |  3 +
 .../WindowManager/Shell/res/values/styles.xml | 16 +++-
 .../shell/common/DisplayInsetsController.java | 12 +--
 .../wm/shell/common/split/DividerView.java    | 80 ++++++++++++++++++-
 .../wm/shell/common/split/SplitLayout.java    | 31 +++++--
 .../common/split/SplitWindowManager.java      | 11 ++-
 .../splitscreen/SplitScreenController.java    | 11 ++-
 .../shell/splitscreen/StageCoordinator.java   | 11 ++-
 .../common/split/SplitWindowManagerTests.java |  3 +-
 .../wm/shell/splitscreen/SplitTestUtils.java  |  7 +-
 .../splitscreen/SplitTransitionTests.java     |  9 ++-
 .../splitscreen/StageCoordinatorTests.java    |  6 +-
 .../systemui/wmshell/WMShellBaseModule.java   |  6 +-
 19 files changed, 324 insertions(+), 39 deletions(-)
 create mode 100644 libs/WindowManager/Shell/res/drawable/split_rounded_bottom.xml
 create mode 100644 libs/WindowManager/Shell/res/drawable/split_rounded_left.xml
 create mode 100644 libs/WindowManager/Shell/res/drawable/split_rounded_right.xml
 create mode 100644 libs/WindowManager/Shell/res/drawable/split_rounded_top.xml

diff --git a/libs/WindowManager/Shell/res/drawable/split_rounded_bottom.xml b/libs/WindowManager/Shell/res/drawable/split_rounded_bottom.xml
new file mode 100644
index 0000000000000..18dc909ae9559
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/split_rounded_bottom.xml
@@ -0,0 +1,30 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="@dimen/split_divider_corner_size"
+        android:height="@dimen/split_divider_corner_size"
+        android:viewportWidth="42"
+        android:viewportHeight="42">
+
+    <group android:pivotX="21"
+           android:pivotY="21"
+           android:rotation="180">
+        <path
+            android:fillColor="@color/split_divider_background"
+            android:pathData="m 0 0 c 8 0 16 8 16 16 h 10 c 0 -8 8 -16 16 -16 z" />
+    </group>
+
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/split_rounded_left.xml b/libs/WindowManager/Shell/res/drawable/split_rounded_left.xml
new file mode 100644
index 0000000000000..931cacf887cd9
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/split_rounded_left.xml
@@ -0,0 +1,30 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="@dimen/split_divider_corner_size"
+        android:height="@dimen/split_divider_corner_size"
+        android:viewportWidth="42"
+        android:viewportHeight="42">
+
+    <group android:pivotX="21"
+           android:pivotY="21"
+           android:rotation="-90">
+        <path
+            android:fillColor="@color/split_divider_background"
+            android:pathData="m 0 0 c 8 0 16 8 16 16 h 10 c 0 -8 8 -16 16 -16 z" />
+    </group>
+
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/split_rounded_right.xml b/libs/WindowManager/Shell/res/drawable/split_rounded_right.xml
new file mode 100644
index 0000000000000..54e47612faa88
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/split_rounded_right.xml
@@ -0,0 +1,30 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="@dimen/split_divider_corner_size"
+        android:height="@dimen/split_divider_corner_size"
+        android:viewportWidth="42"
+        android:viewportHeight="42">
+
+    <group android:pivotX="21"
+           android:pivotY="21"
+           android:rotation="90">
+        <path
+            android:fillColor="@color/split_divider_background"
+            android:pathData="m 0 0 c 8 0 16 8 16 16 h 10 c 0 -8 8 -16 16 -16 z" />
+    </group>
+
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/drawable/split_rounded_top.xml b/libs/WindowManager/Shell/res/drawable/split_rounded_top.xml
new file mode 100644
index 0000000000000..9115b5a2352e8
--- /dev/null
+++ b/libs/WindowManager/Shell/res/drawable/split_rounded_top.xml
@@ -0,0 +1,26 @@
+<!--
+  ~ Copyright (C) 2021 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.
+  -->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="@dimen/split_divider_corner_size"
+        android:height="@dimen/split_divider_corner_size"
+        android:viewportWidth="42"
+        android:viewportHeight="42">
+
+    <path
+        android:fillColor="@color/split_divider_background"
+        android:pathData="m 0 0 c 8 0 16 8 16 16 h 10 c 0 -8 8 -16 16 -16 z" />
+
+</vector>
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/res/layout/split_divider.xml b/libs/WindowManager/Shell/res/layout/split_divider.xml
index a1dba5169f1b1..94182cdba0dd9 100644
--- a/libs/WindowManager/Shell/res/layout/split_divider.xml
+++ b/libs/WindowManager/Shell/res/layout/split_divider.xml
@@ -19,14 +19,25 @@
     android:layout_height="match_parent"
     android:layout_width="match_parent">
 
-    <View
-        style="@style/DockedDividerBackground"
-        android:id="@+id/docked_divider_background"/>
+    <FrameLayout
+        android:id="@+id/divider_bar"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
 
-    <com.android.wm.shell.common.split.DividerHandleView
-        style="@style/DockedDividerHandle"
-        android:id="@+id/docked_divider_handle"
-        android:contentDescription="@string/accessibility_divider"
-        android:background="@null"/>
+        <View style="@style/DockedDividerTopLeftRoundCorner"/>
+
+        <View
+            style="@style/DockedDividerBackground"
+            android:id="@+id/docked_divider_background"/>
+
+        <View style="@style/DockedDividerBottomRightRoundCorner"/>
+
+        <com.android.wm.shell.common.split.DividerHandleView
+            style="@style/DockedDividerHandle"
+            android:id="@+id/docked_divider_handle"
+            android:contentDescription="@string/accessibility_divider"
+            android:background="@null"/>
+
+    </FrameLayout>
 
 </com.android.wm.shell.common.split.DividerView>
diff --git a/libs/WindowManager/Shell/res/values-land/styles.xml b/libs/WindowManager/Shell/res/values-land/styles.xml
index 9eddac48e6dea..e5707f3170d80 100644
--- a/libs/WindowManager/Shell/res/values-land/styles.xml
+++ b/libs/WindowManager/Shell/res/values-land/styles.xml
@@ -28,6 +28,20 @@
         <item name="android:layout_height">96dp</item>
     </style>
 
+    <style name="DockedDividerTopLeftRoundCorner">
+        <item name="android:layout_gravity">center_horizontal|top</item>
+        <item name="android:background">@drawable/split_rounded_top</item>
+        <item name="android:layout_width">@dimen/split_divider_corner_size</item>
+        <item name="android:layout_height">@dimen/split_divider_corner_size</item>
+    </style>
+
+    <style name="DockedDividerBottomRightRoundCorner">
+        <item name="android:layout_gravity">center_horizontal|bottom</item>
+        <item name="android:background">@drawable/split_rounded_bottom</item>
+        <item name="android:layout_width">@dimen/split_divider_corner_size</item>
+        <item name="android:layout_height">@dimen/split_divider_corner_size</item>
+    </style>
+
     <style name="DockedDividerMinimizedShadow">
         <item name="android:layout_width">8dp</item>
         <item name="android:layout_height">match_parent</item>
diff --git a/libs/WindowManager/Shell/res/values/dimen.xml b/libs/WindowManager/Shell/res/values/dimen.xml
index 26c619d92599f..f85766437b44a 100644
--- a/libs/WindowManager/Shell/res/values/dimen.xml
+++ b/libs/WindowManager/Shell/res/values/dimen.xml
@@ -83,6 +83,9 @@
     <dimen name="split_divider_handle_width">72dp</dimen>
     <dimen name="split_divider_handle_height">3dp</dimen>
 
+    <dimen name="split_divider_bar_width">10dp</dimen>
+    <dimen name="split_divider_corner_size">42dp</dimen>
+
     <!-- One-Handed Mode -->
     <!-- Threshold for dragging distance to enable one-handed mode -->
     <dimen name="gestures_onehanded_drag_threshold">20dp</dimen>
diff --git a/libs/WindowManager/Shell/res/values/styles.xml b/libs/WindowManager/Shell/res/values/styles.xml
index 3e4ca3ac6dcee..28ff25ae0fbe4 100644
--- a/libs/WindowManager/Shell/res/values/styles.xml
+++ b/libs/WindowManager/Shell/res/values/styles.xml
@@ -32,11 +32,25 @@
 
     <style name="DockedDividerBackground">
         <item name="android:layout_width">match_parent</item>
-        <item name="android:layout_height">10dp</item>
+        <item name="android:layout_height">@dimen/split_divider_bar_width</item>
         <item name="android:layout_gravity">center_vertical</item>
         <item name="android:background">@color/split_divider_background</item>
     </style>
 
+    <style name="DockedDividerTopLeftRoundCorner">
+        <item name="android:layout_gravity">center_vertical|left</item>
+        <item name="android:background">@drawable/split_rounded_left</item>
+        <item name="android:layout_width">@dimen/split_divider_corner_size</item>
+        <item name="android:layout_height">@dimen/split_divider_corner_size</item>
+    </style>
+
+    <style name="DockedDividerBottomRightRoundCorner">
+        <item name="android:layout_gravity">center_vertical|right</item>
+        <item name="android:background">@drawable/split_rounded_right</item>
+        <item name="android:layout_width">@dimen/split_divider_corner_size</item>
+        <item name="android:layout_height">@dimen/split_divider_corner_size</item>
+    </style>
+
     <style name="DockedDividerMinimizedShadow">
         <item name="android:layout_width">match_parent</item>
         <item name="android:layout_height">8dp</item>
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/common/DisplayInsetsController.java b/libs/WindowManager/Shell/src/com/android/wm/shell/common/DisplayInsetsController.java
index 5f3de7ec35c0a..565f1481233c4 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/common/DisplayInsetsController.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/common/DisplayInsetsController.java
@@ -233,18 +233,18 @@ public class DisplayInsetsController implements DisplayController.OnDisplaysChan
          * control. Won't be called if config_remoteInsetsControllerControlsSystemBars is false.
          * @param packageName: Passes the top package name
          */
-        void topFocusedWindowChanged(String packageName);
+        default void topFocusedWindowChanged(String packageName) {}
 
         /**
          * Called when the window insets configuration has changed.
          */
-        void insetsChanged(InsetsState insetsState);
+        default void insetsChanged(InsetsState insetsState) {}
 
         /**
          * Called when this window retrieved control over a specified set of insets sources.
          */
-        void insetsControlChanged(InsetsState insetsState,
-                InsetsSourceControl[] activeControls);
+        default void insetsControlChanged(InsetsState insetsState,
+                InsetsSourceControl[] activeControls) {}
 
         /**
          * Called when a set of insets source window should be shown by policy.
@@ -252,7 +252,7 @@ public class DisplayInsetsController implements DisplayController.OnDisplaysChan
          * @param types internal insets types (WindowInsets.Type.InsetsType) to show
          * @param fromIme true if this request originated from IME (InputMethodService).
          */
-        void showInsets(int types, boolean fromIme);
+        default void showInsets(int types, boolean fromIme) {}
 
         /**
          * Called when a set of insets source window should be hidden by policy.
@@ -260,6 +260,6 @@ public class DisplayInsetsController implements DisplayController.OnDisplaysChan
          * @param types internal insets types (WindowInsets.Type.InsetsType) to hide
          * @param fromIme true if this request originated from IME (InputMethodService).
          */
-        void hideInsets(int types, boolean fromIme);
+        default void hideInsets(int types, boolean fromIme) {}
     }
 }
\ No newline at end of file
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/DividerView.java b/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/DividerView.java
index cba019a11b282..826e2f5c2f74a 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/DividerView.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/DividerView.java
@@ -19,15 +19,23 @@ package com.android.wm.shell.common.split;
 import static android.content.res.Configuration.ORIENTATION_LANDSCAPE;
 import static android.view.WindowManager.LayoutParams.FLAG_SLIPPERY;
 
+import android.animation.ObjectAnimator;
 import android.content.Context;
+import android.graphics.Rect;
 import android.util.AttributeSet;
+import android.util.Property;
+import android.util.TypedValue;
 import android.view.GestureDetector;
+import android.view.InsetsSource;
+import android.view.InsetsState;
 import android.view.MotionEvent;
 import android.view.SurfaceControlViewHost;
 import android.view.VelocityTracker;
 import android.view.View;
 import android.view.ViewConfiguration;
+import android.view.ViewGroup;
 import android.view.WindowManager;
+import android.view.animation.Interpolator;
 import android.widget.FrameLayout;
 
 import androidx.annotation.NonNull;
@@ -44,6 +52,23 @@ public class DividerView extends FrameLayout implements View.OnTouchListener {
     public static final long TOUCH_ANIMATION_DURATION = 150;
     public static final long TOUCH_RELEASE_ANIMATION_DURATION = 200;
 
+    // TODO(b/191269755): use the value defined in InsetsController.
+    private static final Interpolator RESIZE_INTERPOLATOR = Interpolators.LINEAR;
+
+    // TODO(b/191269755): use the value defined in InsetsController.
+    private static final int ANIMATION_DURATION_RESIZE = 300;
+
+    /**
+     * The task bar height defined in launcher. Used to determine whether to insets divider bounds
+     * or not.
+     */
+    private static final int EXPANDED_TASK_BAR_HEIGHT_IN_DP = 60;
+
+    /** The task bar expanded height. Used to determine whether to insets divider bounds or not. */
+    private final float mExpandedTaskBarHeight = TypedValue.applyDimension(
+            TypedValue.COMPLEX_UNIT_DIP, EXPANDED_TASK_BAR_HEIGHT_IN_DP,
+            getResources().getDisplayMetrics());
+
     private final int mTouchSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
 
     private SplitLayout mSplitLayout;
@@ -58,6 +83,31 @@ public class DividerView extends FrameLayout implements View.OnTouchListener {
     private GestureDetector mDoubleTapDetector;
     private boolean mInteractive;
 
+    /**
+     * Tracks divider bar visible bounds in screen-based coordination. Used to calculate with
+     * insets.
+     */
+    private final Rect mDividerBounds = new Rect();
+    private final Rect mTempRect = new Rect();
+    private FrameLayout mDividerBar;
+
+
+    static final Property<DividerView, Integer> DIVIDER_HEIGHT_PROPERTY =
+            new Property<DividerView, Integer>(Integer.class, "height") {
+                @Override
+                public Integer get(DividerView object) {
+                    return object.mDividerBar.getLayoutParams().height;
+                }
+
+                @Override
+                public void set(DividerView object, Integer value) {
+                    ViewGroup.MarginLayoutParams lp = (ViewGroup.MarginLayoutParams)
+                            object.mDividerBar.getLayoutParams();
+                    lp.height = value;
+                    object.mDividerBar.setLayoutParams(lp);
+                }
+            };
+
     public DividerView(@NonNull Context context) {
         super(context);
     }
@@ -79,14 +129,42 @@ public class DividerView extends FrameLayout implements View.OnTouchListener {
     /** Sets up essential dependencies of the divider bar. */
     public void setup(
             SplitLayout layout,
-            SurfaceControlViewHost viewHost) {
+            SurfaceControlViewHost viewHost,
+            InsetsState insetsState) {
         mSplitLayout = layout;
         mViewHost = viewHost;
+        mDividerBounds.set(layout.getDividerBounds());
+        onInsetsChanged(insetsState, false /* animate */);
+    }
+
+    void onInsetsChanged(InsetsState insetsState, boolean animate) {
+        mTempRect.set(mSplitLayout.getDividerBounds());
+        final InsetsSource taskBarInsetsSource =
+                insetsState.getSource(InsetsState.ITYPE_EXTRA_NAVIGATION_BAR);
+        // Only insets the divider bar with task bar when it's expanded so that the rounded corners
+        // will be drawn against task bar.
+        if (taskBarInsetsSource.getFrame().height() >= mExpandedTaskBarHeight) {
+            mTempRect.inset(taskBarInsetsSource.calculateVisibleInsets(mTempRect));
+        }
+
+        if (!mTempRect.equals(mDividerBounds)) {
+            if (animate) {
+                ObjectAnimator animator = ObjectAnimator.ofInt(this,
+                        DIVIDER_HEIGHT_PROPERTY, mDividerBounds.height(), mTempRect.height());
+                animator.setInterpolator(RESIZE_INTERPOLATOR);
+                animator.setDuration(ANIMATION_DURATION_RESIZE);
+                animator.start();
+            } else {
+                DIVIDER_HEIGHT_PROPERTY.set(this, mTempRect.height());
+            }
+            mDividerBounds.set(mTempRect);
+        }
     }
 
     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
+        mDividerBar = findViewById(R.id.divider_bar);
         mHandle = findViewById(R.id.docked_divider_handle);
         mBackground = findViewById(R.id.docked_divider_background);
         mTouchElevation = getResources().getDimensionPixelSize(
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitLayout.java b/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitLayout.java
index f9c681c1ae4b0..81cad5ac5a510 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitLayout.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitLayout.java
@@ -40,6 +40,8 @@ import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Point;
 import android.graphics.Rect;
+import android.view.InsetsSourceControl;
+import android.view.InsetsState;
 import android.view.SurfaceControl;
 import android.view.WindowInsets;
 import android.view.WindowManager;
@@ -54,12 +56,13 @@ import com.android.internal.policy.DockedDividerUtils;
 import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.animation.Interpolators;
 import com.android.wm.shell.common.DisplayImeController;
+import com.android.wm.shell.common.DisplayInsetsController;
 
 /**
  * Records and handles layout of splits. Helps to calculate proper bounds when configuration or
  * divide position changes.
  */
-public final class SplitLayout {
+public final class SplitLayout implements DisplayInsetsController.OnInsetsChangedListener {
     /**
      * Split position isn't specified normally meaning to use what ever it is currently set to.
      */
@@ -102,6 +105,7 @@ public final class SplitLayout {
     private final ImePositionProcessor mImePositionProcessor;
     private final DismissingParallaxPolicy mDismissingParallaxPolicy;
     private final ShellTaskOrganizer mTaskOrganizer;
+    private final InsetsState mInsetsState = new InsetsState();
 
     private Context mContext;
     private DividerSnapAlgorithm mDividerSnapAlgorithm;
@@ -249,7 +253,7 @@ public final class SplitLayout {
     public void init() {
         if (mInitialized) return;
         mInitialized = true;
-        mSplitWindowManager.init(this);
+        mSplitWindowManager.init(this, mInsetsState);
         mDisplayImeController.addPositionProcessor(mImePositionProcessor);
     }
 
@@ -262,6 +266,23 @@ public final class SplitLayout {
         mImePositionProcessor.reset();
     }
 
+    @Override
+    public void insetsChanged(InsetsState insetsState) {
+        mInsetsState.set(insetsState);
+        if (!mInitialized) {
+            return;
+        }
+        mSplitWindowManager.onInsetsChanged(insetsState);
+    }
+
+    @Override
+    public void insetsControlChanged(InsetsState insetsState,
+            InsetsSourceControl[] activeControls) {
+        if (!mInsetsState.equals(insetsState)) {
+            insetsChanged(insetsState);
+        }
+    }
+
     /**
      * Updates bounds with the passing position. Usually used to update recording bounds while
      * performing animation or dragging divider bar to resize the splits.
@@ -506,7 +527,7 @@ public final class SplitLayout {
         /**
          * Applies a parallax to the task to hint dismissing progress.
          *
-         * @param position the split position to apply dismissing parallax effect
+         * @param position    the split position to apply dismissing parallax effect
          * @param isLandscape indicates whether it's splitting horizontally or vertically
          */
         void applyDividerPosition(int position, boolean isLandscape) {
@@ -518,11 +539,11 @@ public final class SplitLayout {
             if (position <= mDividerSnapAlgorithm.getFirstSplitTarget().position) {
                 mDismissingSide = isLandscape ? DOCKED_LEFT : DOCKED_TOP;
                 totalDismissingDistance = mDividerSnapAlgorithm.getDismissStartTarget().position
-                                - mDividerSnapAlgorithm.getFirstSplitTarget().position;
+                        - mDividerSnapAlgorithm.getFirstSplitTarget().position;
             } else if (position >= mDividerSnapAlgorithm.getLastSplitTarget().position) {
                 mDismissingSide = isLandscape ? DOCKED_RIGHT : DOCKED_BOTTOM;
                 totalDismissingDistance = mDividerSnapAlgorithm.getLastSplitTarget().position
-                                - mDividerSnapAlgorithm.getDismissEndTarget().position;
+                        - mDividerSnapAlgorithm.getDismissEndTarget().position;
             }
 
             if (mDismissingSide != DOCKED_INVALID) {
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitWindowManager.java b/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitWindowManager.java
index b7bbe807cf0c7..fc7edfc4bcebf 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitWindowManager.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/common/split/SplitWindowManager.java
@@ -36,6 +36,7 @@ import android.os.IBinder;
 import android.os.RemoteException;
 import android.util.Slog;
 import android.view.IWindow;
+import android.view.InsetsState;
 import android.view.LayoutInflater;
 import android.view.SurfaceControl;
 import android.view.SurfaceControlViewHost;
@@ -103,7 +104,7 @@ public final class SplitWindowManager extends WindowlessWindowManager {
     }
 
     /** Inflates {@link DividerView} on to the root surface. */
-    void init(SplitLayout splitLayout) {
+    void init(SplitLayout splitLayout, InsetsState insetsState) {
         if (mDividerView != null || mViewHost != null) {
             throw new UnsupportedOperationException(
                     "Try to inflate divider view again without release first");
@@ -123,7 +124,7 @@ public final class SplitWindowManager extends WindowlessWindowManager {
         lp.setTitle(mWindowName);
         lp.privateFlags |= PRIVATE_FLAG_NO_MOVE_ANIMATION | PRIVATE_FLAG_TRUSTED_OVERLAY;
         mViewHost.setView(mDividerView, lp);
-        mDividerView.setup(splitLayout, mViewHost);
+        mDividerView.setup(splitLayout, mViewHost, insetsState);
     }
 
     /**
@@ -169,4 +170,10 @@ public final class SplitWindowManager extends WindowlessWindowManager {
     SurfaceControl getSurfaceControl() {
         return mLeash;
     }
+
+    void onInsetsChanged(InsetsState insetsState) {
+        if (mDividerView != null) {
+            mDividerView.onInsetsChanged(insetsState, true /* animate */);
+        }
+    }
 }
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreenController.java b/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreenController.java
index 5bfecf2ef7aef..437b52a31ee43 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreenController.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/SplitScreenController.java
@@ -42,8 +42,8 @@ import android.view.IRemoteAnimationFinishedCallback;
 import android.view.RemoteAnimationAdapter;
 import android.view.RemoteAnimationTarget;
 import android.view.SurfaceControl;
-import android.view.WindowManager;
 import android.view.SurfaceSession;
+import android.view.WindowManager;
 import android.window.IRemoteTransition;
 import android.window.WindowContainerTransaction;
 
@@ -56,6 +56,7 @@ import com.android.internal.util.FrameworkStatsLog;
 import com.android.wm.shell.RootTaskDisplayAreaOrganizer;
 import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.common.DisplayImeController;
+import com.android.wm.shell.common.DisplayInsetsController;
 import com.android.wm.shell.common.RemoteCallable;
 import com.android.wm.shell.common.ShellExecutor;
 import com.android.wm.shell.common.SyncTransactionQueue;
@@ -68,7 +69,6 @@ import com.android.wm.shell.transition.Transitions;
 
 import java.io.PrintWriter;
 import java.util.Arrays;
-import java.util.Comparator;
 import java.util.concurrent.Executor;
 
 /**
@@ -87,6 +87,7 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
     private final ShellExecutor mMainExecutor;
     private final SplitScreenImpl mImpl = new SplitScreenImpl();
     private final DisplayImeController mDisplayImeController;
+    private final DisplayInsetsController mDisplayInsetsController;
     private final Transitions mTransitions;
     private final TransactionPool mTransactionPool;
     private final SplitscreenEventLogger mLogger;
@@ -97,6 +98,7 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
             SyncTransactionQueue syncQueue, Context context,
             RootTaskDisplayAreaOrganizer rootTDAOrganizer,
             ShellExecutor mainExecutor, DisplayImeController displayImeController,
+            DisplayInsetsController displayInsetsController,
             Transitions transitions, TransactionPool transactionPool) {
         mTaskOrganizer = shellTaskOrganizer;
         mSyncQueue = syncQueue;
@@ -104,6 +106,7 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
         mRootTDAOrganizer = rootTDAOrganizer;
         mMainExecutor = mainExecutor;
         mDisplayImeController = displayImeController;
+        mDisplayInsetsController = displayInsetsController;
         mTransitions = transitions;
         mTransactionPool = transactionPool;
         mLogger = new SplitscreenEventLogger();
@@ -127,8 +130,8 @@ public class SplitScreenController implements DragAndDropPolicy.Starter,
         if (mStageCoordinator == null) {
             // TODO: Multi-display
             mStageCoordinator = new StageCoordinator(mContext, DEFAULT_DISPLAY, mSyncQueue,
-                    mRootTDAOrganizer, mTaskOrganizer, mDisplayImeController, mTransitions,
-                    mTransactionPool, mLogger);
+                    mRootTDAOrganizer, mTaskOrganizer, mDisplayImeController,
+                    mDisplayInsetsController, mTransitions, mTransactionPool, mLogger);
         }
     }
 
diff --git a/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java b/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java
index 736fae41f2ed2..9e6edd2a53817 100644
--- a/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java
+++ b/libs/WindowManager/Shell/src/com/android/wm/shell/splitscreen/StageCoordinator.java
@@ -85,6 +85,7 @@ import com.android.internal.protolog.common.ProtoLog;
 import com.android.wm.shell.RootTaskDisplayAreaOrganizer;
 import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.common.DisplayImeController;
+import com.android.wm.shell.common.DisplayInsetsController;
 import com.android.wm.shell.common.SyncTransactionQueue;
 import com.android.wm.shell.common.TransactionPool;
 import com.android.wm.shell.common.split.SplitLayout;
@@ -136,6 +137,7 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
     private final Context mContext;
     private final List<SplitScreen.SplitScreenListener> mListeners = new ArrayList<>();
     private final DisplayImeController mDisplayImeController;
+    private final DisplayInsetsController mDisplayInsetsController;
     private final SplitScreenTransitions mSplitTransitions;
     private final SplitscreenEventLogger mLogger;
     private boolean mExitSplitScreenOnHide;
@@ -163,7 +165,8 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
 
     StageCoordinator(Context context, int displayId, SyncTransactionQueue syncQueue,
             RootTaskDisplayAreaOrganizer rootTDAOrganizer, ShellTaskOrganizer taskOrganizer,
-            DisplayImeController displayImeController, Transitions transitions,
+            DisplayImeController displayImeController,
+            DisplayInsetsController displayInsetsController, Transitions transitions,
             TransactionPool transactionPool, SplitscreenEventLogger logger) {
         mContext = context;
         mDisplayId = displayId;
@@ -185,6 +188,7 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
                 mSyncQueue,
                 mSurfaceSession);
         mDisplayImeController = displayImeController;
+        mDisplayInsetsController = displayInsetsController;
         mRootTDAOrganizer.registerListener(displayId, this);
         final DeviceStateManager deviceStateManager =
                 mContext.getSystemService(DeviceStateManager.class);
@@ -199,7 +203,8 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
     StageCoordinator(Context context, int displayId, SyncTransactionQueue syncQueue,
             RootTaskDisplayAreaOrganizer rootTDAOrganizer, ShellTaskOrganizer taskOrganizer,
             MainStage mainStage, SideStage sideStage, DisplayImeController displayImeController,
-            SplitLayout splitLayout, Transitions transitions, TransactionPool transactionPool,
+            DisplayInsetsController displayInsetsController, SplitLayout splitLayout,
+            Transitions transitions, TransactionPool transactionPool,
             SplitscreenEventLogger logger) {
         mContext = context;
         mDisplayId = displayId;
@@ -209,6 +214,7 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
         mMainStage = mainStage;
         mSideStage = sideStage;
         mDisplayImeController = displayImeController;
+        mDisplayInsetsController = displayInsetsController;
         mRootTDAOrganizer.registerListener(displayId, this);
         mSplitLayout = splitLayout;
         mSplitTransitions = new SplitScreenTransitions(transactionPool, transitions,
@@ -832,6 +838,7 @@ class StageCoordinator implements SplitLayout.SplitLayoutHandler,
                     mDisplayAreaInfo.configuration, this,
                     b -> mRootTDAOrganizer.attachToDisplayArea(mDisplayId, b),
                     mDisplayImeController, mTaskOrganizer);
+            mDisplayInsetsController.addInsetsChangedListener(mDisplayId, mSplitLayout);
         }
     }
 
diff --git a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/common/split/SplitWindowManagerTests.java b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/common/split/SplitWindowManagerTests.java
index 698315a77d8e5..c456c7de8821c 100644
--- a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/common/split/SplitWindowManagerTests.java
+++ b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/common/split/SplitWindowManagerTests.java
@@ -22,6 +22,7 @@ import static org.mockito.Mockito.when;
 
 import android.content.res.Configuration;
 import android.graphics.Rect;
+import android.view.InsetsState;
 import android.view.SurfaceControl;
 
 import androidx.test.annotation.UiThreadTest;
@@ -59,7 +60,7 @@ public class SplitWindowManagerTests extends ShellTestCase {
     @Test
     @UiThreadTest
     public void testInitRelease() {
-        mSplitWindowManager.init(mSplitLayout);
+        mSplitWindowManager.init(mSplitLayout, new InsetsState());
         assertThat(mSplitWindowManager.getSurfaceControl()).isNotNull();
         mSplitWindowManager.release();
         assertThat(mSplitWindowManager.getSurfaceControl()).isNull();
diff --git a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTestUtils.java b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTestUtils.java
index b0a39d67d00cb..736566e5b4d31 100644
--- a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTestUtils.java
+++ b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTestUtils.java
@@ -33,6 +33,7 @@ import com.android.dx.mockito.inline.extended.ExtendedMockito;
 import com.android.wm.shell.RootTaskDisplayAreaOrganizer;
 import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.common.DisplayImeController;
+import com.android.wm.shell.common.DisplayInsetsController;
 import com.android.wm.shell.common.SyncTransactionQueue;
 import com.android.wm.shell.common.TransactionPool;
 import com.android.wm.shell.common.split.SplitLayout;
@@ -65,10 +66,12 @@ public class SplitTestUtils {
         TestStageCoordinator(Context context, int displayId, SyncTransactionQueue syncQueue,
                 RootTaskDisplayAreaOrganizer rootTDAOrganizer, ShellTaskOrganizer taskOrganizer,
                 MainStage mainStage, SideStage sideStage, DisplayImeController imeController,
-                SplitLayout splitLayout, Transitions transitions, TransactionPool transactionPool,
+                DisplayInsetsController insetsController, SplitLayout splitLayout,
+                Transitions transitions, TransactionPool transactionPool,
                 SplitscreenEventLogger logger) {
             super(context, displayId, syncQueue, rootTDAOrganizer, taskOrganizer, mainStage,
-                    sideStage, imeController, splitLayout, transitions, transactionPool, logger);
+                    sideStage, imeController, insetsController, splitLayout, transitions,
+                    transactionPool, logger);
 
             // Prepare default TaskDisplayArea for testing.
             mDisplayAreaInfo = new DisplayAreaInfo(
diff --git a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTransitionTests.java b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTransitionTests.java
index cb759dc454af2..a53d2e8b12680 100644
--- a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTransitionTests.java
+++ b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/SplitTransitionTests.java
@@ -58,6 +58,7 @@ import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.ShellTestCase;
 import com.android.wm.shell.TestRunningTaskInfoBuilder;
 import com.android.wm.shell.common.DisplayImeController;
+import com.android.wm.shell.common.DisplayInsetsController;
 import com.android.wm.shell.common.ShellExecutor;
 import com.android.wm.shell.common.SyncTransactionQueue;
 import com.android.wm.shell.common.TransactionPool;
@@ -79,6 +80,7 @@ public class SplitTransitionTests extends ShellTestCase {
     @Mock private SyncTransactionQueue mSyncQueue;
     @Mock private RootTaskDisplayAreaOrganizer mRootTDAOrganizer;
     @Mock private DisplayImeController mDisplayImeController;
+    @Mock private DisplayInsetsController mDisplayInsetsController;
     @Mock private TransactionPool mTransactionPool;
     @Mock private Transitions mTransitions;
     @Mock private SurfaceSession mSurfaceSession;
@@ -107,9 +109,10 @@ public class SplitTransitionTests extends ShellTestCase {
                 StageTaskListener.StageListenerCallbacks.class), mSyncQueue, mSurfaceSession);
         mSideStage.onTaskAppeared(new TestRunningTaskInfoBuilder().build(), createMockSurface());
         mStageCoordinator = new SplitTestUtils.TestStageCoordinator(mContext, DEFAULT_DISPLAY,
-                    mSyncQueue, mRootTDAOrganizer, mTaskOrganizer, mMainStage, mSideStage,
-                    mDisplayImeController, mSplitLayout, mTransitions, mTransactionPool,
-                    mLogger);
+                mSyncQueue, mRootTDAOrganizer, mTaskOrganizer, mMainStage, mSideStage,
+                mDisplayImeController, mDisplayInsetsController, mSplitLayout, mTransitions,
+                mTransactionPool,
+                mLogger);
         mSplitScreenTransitions = mStageCoordinator.getSplitTransitions();
         doAnswer((Answer<IBinder>) invocation -> mock(IBinder.class))
                 .when(mTransitions).startTransition(anyInt(), any(), any());
diff --git a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/StageCoordinatorTests.java b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/StageCoordinatorTests.java
index a4b76fb943e65..6cce0ab26df75 100644
--- a/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/StageCoordinatorTests.java
+++ b/libs/WindowManager/Shell/tests/unittest/src/com/android/wm/shell/splitscreen/StageCoordinatorTests.java
@@ -37,6 +37,7 @@ import com.android.wm.shell.ShellTaskOrganizer;
 import com.android.wm.shell.ShellTestCase;
 import com.android.wm.shell.TestRunningTaskInfoBuilder;
 import com.android.wm.shell.common.DisplayImeController;
+import com.android.wm.shell.common.DisplayInsetsController;
 import com.android.wm.shell.common.SyncTransactionQueue;
 import com.android.wm.shell.common.TransactionPool;
 import com.android.wm.shell.transition.Transitions;
@@ -57,6 +58,7 @@ public class StageCoordinatorTests extends ShellTestCase {
     @Mock private MainStage mMainStage;
     @Mock private SideStage mSideStage;
     @Mock private DisplayImeController mDisplayImeController;
+    @Mock private DisplayInsetsController mDisplayInsetsController;
     @Mock private Transitions mTransitions;
     @Mock private TransactionPool mTransactionPool;
     @Mock private SplitscreenEventLogger mLogger;
@@ -67,8 +69,8 @@ public class StageCoordinatorTests extends ShellTestCase {
         MockitoAnnotations.initMocks(this);
         mStageCoordinator = new SplitTestUtils.TestStageCoordinator(mContext, DEFAULT_DISPLAY,
                 mSyncQueue, mRootTDAOrganizer, mTaskOrganizer, mMainStage, mSideStage,
-                mDisplayImeController, null /* splitLayout */, mTransitions, mTransactionPool,
-                mLogger);
+                mDisplayImeController, mDisplayInsetsController, null /* splitLayout */,
+                mTransitions, mTransactionPool, mLogger);
     }
 
     @Test
diff --git a/packages/SystemUI/src/com/android/systemui/wmshell/WMShellBaseModule.java b/packages/SystemUI/src/com/android/systemui/wmshell/WMShellBaseModule.java
index c178b29326f7f..f420a85c8bf6a 100644
--- a/packages/SystemUI/src/com/android/systemui/wmshell/WMShellBaseModule.java
+++ b/packages/SystemUI/src/com/android/systemui/wmshell/WMShellBaseModule.java
@@ -377,11 +377,13 @@ public abstract class WMShellBaseModule {
             SyncTransactionQueue syncQueue, Context context,
             RootTaskDisplayAreaOrganizer rootTaskDisplayAreaOrganizer,
             @ShellMainThread ShellExecutor mainExecutor,
-            DisplayImeController displayImeController, Transitions transitions,
+            DisplayImeController displayImeController,
+            DisplayInsetsController displayInsetsController, Transitions transitions,
             TransactionPool transactionPool) {
         if (ActivityTaskManager.supportsSplitScreenMultiWindow(context)) {
             return Optional.of(new SplitScreenController(shellTaskOrganizer, syncQueue, context,
-                    rootTaskDisplayAreaOrganizer, mainExecutor, displayImeController, transitions,
+                    rootTaskDisplayAreaOrganizer, mainExecutor, displayImeController,
+                    displayInsetsController, transitions,
                     transactionPool));
         } else {
             return Optional.empty();