From 30c947df377af0a50736f401a8061b2b67b882f0 Mon Sep 17 00:00:00 2001
From: Sergey Nikolaienkov <sergeynv@google.com>
Date: Wed, 15 Apr 2020 19:55:48 +0200
Subject: [PATCH] Make unfocused windows in pinned mode unable to receive touch
 input

Make unfocused ActivityStacks in pinned windowing mode ignore input on
Leanback devices (TVs).

Bug: 144032975
Bug: 153050065
Test: atest atest CtsWindowManagerDeviceTestCases:PinnedStackTests
Change-Id: Id9049c543ed6493a840b7a34a68f4e7bc1010262
---
 .../core/java/com/android/server/wm/ActivityStack.java | 10 +++++++++-
 .../android/server/wm/ActivityTaskManagerService.java  |  8 ++++++--
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/services/core/java/com/android/server/wm/ActivityStack.java b/services/core/java/com/android/server/wm/ActivityStack.java
index 8bf46bc7c2e84..45c881b9ffa68 100644
--- a/services/core/java/com/android/server/wm/ActivityStack.java
+++ b/services/core/java/com/android/server/wm/ActivityStack.java
@@ -3610,7 +3610,15 @@ class ActivityStack extends Task {
     }
 
     boolean shouldIgnoreInput() {
-        return inSplitScreenPrimaryWindowingMode() && !isFocusable();
+        if (inSplitScreenPrimaryWindowingMode() && !isFocusable()) {
+            return true;
+        }
+        if (mAtmService.mHasLeanbackFeature && inPinnedWindowingMode()
+                && !isFocusedStackOnDisplay()) {
+            // Preventing Picture-in-Picture stack from receiving input on TVs.
+            return true;
+        }
+        return false;
     }
 
     @Override
diff --git a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
index 7a04894523f59..80036865c3770 100644
--- a/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
+++ b/services/core/java/com/android/server/wm/ActivityTaskManagerService.java
@@ -42,7 +42,9 @@ import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
 import static android.content.pm.ApplicationInfo.FLAG_FACTORY_TEST;
 import static android.content.pm.ConfigurationInfo.GL_ES_VERSION_UNDEFINED;
 import static android.content.pm.PackageManager.FEATURE_ACTIVITIES_ON_SECONDARY_DISPLAYS;
+import static android.content.pm.PackageManager.FEATURE_CANT_SAVE_STATE;
 import static android.content.pm.PackageManager.FEATURE_FREEFORM_WINDOW_MANAGEMENT;
+import static android.content.pm.PackageManager.FEATURE_LEANBACK;
 import static android.content.pm.PackageManager.FEATURE_PICTURE_IN_PICTURE;
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 import static android.os.FactoryTest.FACTORY_TEST_HIGH_LEVEL;
@@ -393,6 +395,7 @@ public class ActivityTaskManagerService extends IActivityTaskManager.Stub {
     /** The currently running heavy-weight process, if any. */
     WindowProcessController mHeavyWeightProcess = null;
     boolean mHasHeavyWeightFeature;
+    boolean mHasLeanbackFeature;
     /**
      * This is the process holding the activity the user last visited that is in a different process
      * from the one they are currently in.
@@ -734,8 +737,9 @@ public class ActivityTaskManagerService extends IActivityTaskManager.Stub {
 
     public void onSystemReady() {
         synchronized (mGlobalLock) {
-            mHasHeavyWeightFeature = mContext.getPackageManager().hasSystemFeature(
-                    PackageManager.FEATURE_CANT_SAVE_STATE);
+            final PackageManager pm = mContext.getPackageManager();
+            mHasHeavyWeightFeature = pm.hasSystemFeature(FEATURE_CANT_SAVE_STATE);
+            mHasLeanbackFeature = pm.hasSystemFeature(FEATURE_LEANBACK);
             mAssistUtils = new AssistUtils(mContext);
             mVrController.onSystemReady();
             mRecentTasks.onSystemReadyLocked();