From d8fb07f53428627c3e32a7e15594b00143ca6476 Mon Sep 17 00:00:00 2001
From: Jason Monk <jmonk@google.com>
Date: Tue, 2 Aug 2016 15:39:42 -0400
Subject: [PATCH 1/2] QS Header: don't update everything unless we need to

Because it leads to bad performance.

Bug: 30442298
Change-Id: I4c7b68ad30a1fd4fe8245f27ce2d2b2038583d23
---
 .../android/systemui/statusbar/phone/QuickStatusBarHeader.java   | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
index a9c47834238f9..892fe93717825 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
@@ -197,6 +197,7 @@ public class QuickStatusBarHeader extends BaseStatusBarHeader implements
 
     @Override
     public void setExpanded(boolean expanded) {
+        if (mExpanded == expanded) return;
         mExpanded = expanded;
         mHeaderQsPanel.setExpanded(expanded);
         updateEverything();

From 9c74ff12183776558372df6930591f6a8d3f431f Mon Sep 17 00:00:00 2001
From: Jason Monk <jmonk@google.com>
Date: Wed, 3 Aug 2016 10:25:42 -0400
Subject: [PATCH 2/2] QS Header: post some updates to the header

These sometimes trigger binder calls, that can cause jank on the
first frame of expanding the panel.

Bug: 30442298
Change-Id: Id60fd5ee9732515cd6f9645c7ab307c949dfc506
---
 .../systemui/statusbar/phone/QuickStatusBarHeader.java      | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
index 892fe93717825..7a2ae22ed4664 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
@@ -256,8 +256,10 @@ public class QuickStatusBarHeader extends BaseStatusBarHeader implements
 
     @Override
     public void updateEverything() {
-        updateVisibilities();
-        setClickable(false);
+        post(() -> {
+            updateVisibilities();
+            setClickable(false);
+        });
     }
 
     protected void updateVisibilities() {