Rounded corners on app transitions

Test: Manualy launch an app
Test: Press home when activity is on top of the stack
Test: Quick scrub
Test: Swipe up on the home button, swipe down
Bug: 111514493
Fixes: 116745318
Change-Id: I66d25bc433061ede46107ea9651c198614306692
(cherry picked from commit faa443308ef4de1be482d7d033209d8d6d8cff7b)

1 files changed, 26 insertions, 0 deletions

diff --git a/quickstep/src/com/android/quickstep/RecentsModel.java b/quickstep/src/com/android/quickstep/RecentsModel.java
index 2e4d4d2b8..a62e6adfa 100644
--- a/quickstep/src/com/android/quickstep/RecentsModel.java
+++ b/quickstep/src/com/android/quickstep/RecentsModel.java
@@ -45,6 +45,9 @@ import androidx.annotation.WorkerThread;
  */
 @TargetApi(Build.VERSION_CODES.O)
 public class RecentsModel extends TaskStackChangeListener {
+
+    private static final String TAG = "RecentsModel";
+
     // We do not need any synchronization for this variable as its only written on UI thread.
     public static final MainThreadInitializedObject<RecentsModel> INSTANCE =
             new MainThreadInitializedObject<>(c -> new RecentsModel(c));
@@ -62,6 +65,9 @@ public class RecentsModel extends TaskStackChangeListener {
     private final TaskIconCache mIconCache;
     private final TaskThumbnailCache mThumbnailCache;
 
+    private float mWindowCornerRadius = -1;
+
+
     private RecentsModel(Context context) {
         mContext = context;
 
@@ -174,6 +180,26 @@ public class RecentsModel extends TaskStackChangeListener {
         return mSystemUiProxy;
     }
 
+    public float getWindowCornerRadius() {
+        // The window corner radius is expressed in pixels and won't change if the
+        // display density changes. It's safe to cache the value.
+        if (mWindowCornerRadius == -1) {
+            if (mSystemUiProxy != null) {
+                try {
+                    mWindowCornerRadius = mSystemUiProxy.getWindowCornerRadius();
+                } catch (RemoteException e) {
+                    Log.w(TAG, "Connection to ISystemUIProxy was lost, ignoring window corner "
+                            + "radius");
+                    return 0;
+                }
+            } else {
+                Log.w(TAG, "ISystemUIProxy is null, ignoring window corner radius");
+                return 0;
+            }
+        }
+        return mWindowCornerRadius;
+    }
+
     public void onTrimMemory(int level) {
         if (level == ComponentCallbacks2.TRIM_MEMORY_UI_HIDDEN) {
             mThumbnailCache.getHighResLoadingState().setVisible(false);