From 2d435949ef08a2219feb23dba035f5a78b038f3f Mon Sep 17 00:00:00 2001
From: Graciela Wissen Putri <gracielawputri@google.com>
Date: Tue, 2 May 2023 15:32:24 +0000
Subject: [PATCH] Send update config change when letterbox is moved

When letterbox is repositioned, window configuration bounds are changed.
Because we currently only report public config changes in
diffPublicOnly, the client doesn't report changes in window
configuration.

We should always report window configuration bounds change to notify
that the position of window has changed.

Bug: 262900133
Test: atest FrameworksCoreTests:android.app.activity.ActivityThreadTest
      Manual test with app in bug
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:70187af25ce3f56f85ddd703f982caa82f685605)
Merged-In: I9fc10876c03933ac8aac05205d56ad6537df72a8
Change-Id: I9fc10876c03933ac8aac05205d56ad6537df72a8
---
 core/java/android/app/ActivityThread.java                   | 6 ++++++
 core/java/android/window/ConfigurationHelper.java           | 2 +-
 .../src/android/app/activity/ActivityThreadTest.java        | 6 ++----
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/core/java/android/app/ActivityThread.java b/core/java/android/app/ActivityThread.java
index 5985d6e93107a..10ca8990f2ff3 100644
--- a/core/java/android/app/ActivityThread.java
+++ b/core/java/android/app/ActivityThread.java
@@ -36,6 +36,7 @@ import static android.view.Display.INVALID_DISPLAY;
 import static android.window.ConfigurationHelper.freeTextLayoutCachesIfNeeded;
 import static android.window.ConfigurationHelper.isDifferentDisplay;
 import static android.window.ConfigurationHelper.shouldUpdateResources;
+import static android.window.ConfigurationHelper.shouldUpdateWindowMetricsBounds;
 
 import static com.android.internal.annotations.VisibleForTesting.Visibility.PACKAGE;
 
@@ -5987,6 +5988,11 @@ public final class ActivityThread extends ClientTransactionHandler
     public static boolean shouldReportChange(@Nullable Configuration currentConfig,
             @NonNull Configuration newConfig, @Nullable SizeConfigurationBuckets sizeBuckets,
             int handledConfigChanges) {
+        // Always report changes in window configuration bounds
+        if (shouldUpdateWindowMetricsBounds(currentConfig, newConfig)) {
+            return true;
+        }
+
         final int publicDiff = currentConfig.diffPublicOnly(newConfig);
         // Don't report the change if there's no public diff between current and new config.
         if (publicDiff == 0) {
diff --git a/core/java/android/window/ConfigurationHelper.java b/core/java/android/window/ConfigurationHelper.java
index e32adcf23a3b8..269ce083d2059 100644
--- a/core/java/android/window/ConfigurationHelper.java
+++ b/core/java/android/window/ConfigurationHelper.java
@@ -106,7 +106,7 @@ public class ConfigurationHelper {
      * @see WindowManager#getCurrentWindowMetrics()
      * @see WindowManager#getMaximumWindowMetrics()
      */
-    private static boolean shouldUpdateWindowMetricsBounds(@NonNull Configuration currentConfig,
+    public static boolean shouldUpdateWindowMetricsBounds(@NonNull Configuration currentConfig,
             @NonNull Configuration newConfig) {
         final Rect currentBounds = currentConfig.windowConfiguration.getBounds();
         final Rect newBounds = newConfig.windowConfiguration.getBounds();
diff --git a/core/tests/coretests/src/android/app/activity/ActivityThreadTest.java b/core/tests/coretests/src/android/app/activity/ActivityThreadTest.java
index 984ba584953ac..1e1fca1ed0f41 100644
--- a/core/tests/coretests/src/android/app/activity/ActivityThreadTest.java
+++ b/core/tests/coretests/src/android/app/activity/ActivityThreadTest.java
@@ -351,10 +351,8 @@ public class ActivityThreadTest {
         final Rect bounds = activity.getWindowManager().getCurrentWindowMetrics().getBounds();
         assertEquals(activityConfigPortrait.windowConfiguration.getBounds(), bounds);
 
-        // Ensure that Activity#onConfigurationChanged() not be called because the changes in
-        // WindowConfiguration shouldn't be reported, and we only apply the latest Configuration
-        // update in transaction.
-        assertEquals(numOfConfig, activity.mNumOfConfigChanges);
+        // Ensure changes in window configuration bounds are reported
+        assertEquals(numOfConfig + 1, activity.mNumOfConfigChanges);
     }
 
     @Test