Merge "Keep reporting > 0 insets on home screen" into tm-dev am: 808b6c2fed

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/apps/Launcher3/+/17084127

Change-Id: Ia8209ca860ad9bb0080bf77ef8a3a352ec1b0461

quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java

@@ -250,7 +250,11 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
      * Returns whether the taskbar is currently visible and in an app.
      */
     public boolean isInAppAndNotStashed() {
-        return !mIsStashed && (mState & FLAG_IN_APP) != 0;
+        return !mIsStashed && isInApp();
+    }
+
+    private boolean isInApp() {
+        return hasAnyFlag(FLAG_IN_APP);
     }
 
     /**
@@ -266,8 +270,15 @@ public class TaskbarStashController implements TaskbarControllers.LoggableTaskba
                 return mUnstashedHeight;
             }
             boolean isAnimating = mAnimator != null && mAnimator.isStarted();
-            return mControllers.stashedHandleViewController.isStashedHandleVisible() || isAnimating
-                    ? mStashedHeight : 0;
+            if (!mControllers.stashedHandleViewController.isStashedHandleVisible()
+                    && isInApp()
+                    && !isAnimating) {
+                // We are in a settled state where we're not showing the handle even though taskbar
+                // is stashed. This can happen for example when home button is disabled (see
+                // StashedHandleViewController#setIsHomeButtonDisabled()).
+                return 0;
+            }
+            return mStashedHeight;
         }
         return mUnstashedHeight;
     }