[flexiglass] Only update the NSSL's HUN bounds when they're changing

Only make a requesctChildrenUpdate() upon headsUpTop changes, if we
receibe a new value.

Bug: 387961133
Test: drag HUNs, see if they're still updated smoothly
Flag: com.android.systemui.scene_container
Change-Id: I450b06746bd1e1deacd721f600561ab3ad84c601

1 files changed, 8 insertions, 4 deletions

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java
index 76591ac4e453..7b55e83a0a99 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/NotificationStackScrollLayout.java
@@ -1245,15 +1245,19 @@ public class NotificationStackScrollLayout
     @Override
     public void setHeadsUpTop(float headsUpTop) {
         if (SceneContainerFlag.isUnexpectedlyInLegacyMode()) return;
-        mAmbientState.setHeadsUpTop(headsUpTop);
-        requestChildrenUpdate();
+        if (mAmbientState.getHeadsUpTop() != headsUpTop) {
+            mAmbientState.setHeadsUpTop(headsUpTop);
+            requestChildrenUpdate();
+        }
     }
 
     @Override
     public void setHeadsUpBottom(float headsUpBottom) {
         if (SceneContainerFlag.isUnexpectedlyInLegacyMode()) return;
-        mAmbientState.setHeadsUpBottom(headsUpBottom);
-        mStateAnimator.setHeadsUpAppearHeightBottom(Math.round(headsUpBottom));
+        if (mAmbientState.getHeadsUpBottom() != headsUpBottom) {
+            mAmbientState.setHeadsUpBottom(headsUpBottom);
+            mStateAnimator.setHeadsUpAppearHeightBottom(Math.round(headsUpBottom));
+        }
     }
 
     @Override