QS: Only allow clicking in the expand button

Also ditch the header BG so the panel can feel like one surface, as
a result need to set some clip bounds on the QSPanel to avoid some
collisions between the header and QS.

Bug: 27881430
Change-Id: Ia78c5b8a7a90bd02b97fa448efa06fc056f624ef
diff --git a/packages/SystemUI/res/layout/quick_status_bar_expanded_header.xml b/packages/SystemUI/res/layout/quick_status_bar_expanded_header.xml
index cb861ec..b88846b 100644
--- a/packages/SystemUI/res/layout/quick_status_bar_expanded_header.xml
+++ b/packages/SystemUI/res/layout/quick_status_bar_expanded_header.xml
@@ -26,9 +26,6 @@
     android:clipChildren="false"
     android:clipToPadding="false"
     android:baselineAligned="false"
-    android:background="@drawable/quick_header_bg"
-    android:clickable="true"
-    android:focusable="true"
     >
 
     <LinearLayout
@@ -83,6 +80,10 @@
             android:id="@+id/expand_indicator"
             android:layout_width="48dp"
             android:layout_height="48dp"
+            android:clipToPadding="false"
+            android:clickable="true"
+            android:focusable="true"
+            android:background="?android:attr/selectableItemBackgroundBorderless"
             android:padding="12dp" />
 
     </LinearLayout>
diff --git a/packages/SystemUI/src/com/android/systemui/qs/QSContainer.java b/packages/SystemUI/src/com/android/systemui/qs/QSContainer.java
index 43ebe04..5dd482b 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/QSContainer.java
+++ b/packages/SystemUI/src/com/android/systemui/qs/QSContainer.java
@@ -20,6 +20,7 @@
 import android.animation.AnimatorListenerAdapter;
 import android.content.Context;
 import android.graphics.Point;
+import android.graphics.Rect;
 import android.util.AttributeSet;
 import android.util.Log;
 import android.view.View;
@@ -43,6 +44,7 @@
     private static final boolean DEBUG = false;
 
     private final Point mSizePoint = new Point();
+    private final Rect mQsBounds = new Rect();
 
     private int mHeightOverride = -1;
     private QSPanel mQSPanel;
@@ -226,6 +228,12 @@
         mQSDetail.setFullyExpanded(expansion == 1);
         mQSAnimator.setPosition(expansion);
         updateBottom();
+
+        // Set bounds on the QS panel so it doesn't run over the header.
+        mQsBounds.top = (int) (mQSPanel.getHeight() * (1 - expansion));
+        mQsBounds.right = mQSPanel.getWidth();
+        mQsBounds.bottom = mQSPanel.getHeight();
+        mQSPanel.setClipBounds(mQsBounds);
     }
 
     public void animateHeaderSlidingIn(long delay) {
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
index 12035b9..ed1ad90 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java
@@ -225,7 +225,8 @@
             public void onInflated(View v) {
                 mQsContainer = (QSContainer) v.findViewById(R.id.quick_settings_container);
                 mQsContainer.setPanelView(NotificationPanelView.this);
-                mQsContainer.getHeader().setOnClickListener(NotificationPanelView.this);
+                mQsContainer.getHeader().findViewById(R.id.expand_indicator)
+                        .setOnClickListener(NotificationPanelView.this);
             }
         });
         mClockView = (TextView) findViewById(R.id.clock_view);
@@ -1758,7 +1759,7 @@
 
     @Override
     public void onClick(View v) {
-        if (v == mQsContainer.getHeader()) {
+        if (v.getId() == R.id.expand_indicator) {
             onQsExpansionStarted();
             if (mQsExpanded) {
                 flingSettings(0 /* vel */, false /* expand */, null, true /* isClick */);
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 8f329c4..8b030a6 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickStatusBarHeader.java
@@ -124,7 +124,6 @@
 
         // RenderThread is doing more harm than good when touching the header (to expand quick
         // settings), so disable it for this view
-        ((RippleDrawable) getBackground()).setForceSoftware(true);
         ((RippleDrawable) mSettingsButton.getBackground()).setForceSoftware(true);
 
         updateResources();