Allow closing the whole panel when QS is open

If the user drags below the notifications, we close everything. Only
implemented for the SHADE, and not on Keyguard because of
time constraints.

Bug: 15414856
Change-Id: I4cf656484bc1217d552211c2bfdd7598eb52dad7

packages/SystemUI/src/com/android/systemui/statusbar/phone/NotificationPanelView.java

@@ -450,7 +450,13 @@ public class NotificationPanelView extends PanelView implements
                 mIntercepting = false;
                 break;
         }
-        return !mQsExpanded && super.onInterceptTouchEvent(event);
+
+        // Allow closing the whole panel when in SHADE state.
+        if (mStatusBarState == StatusBarState.SHADE) {
+            return super.onInterceptTouchEvent(event);
+        } else {
+            return !mQsExpanded && super.onInterceptTouchEvent(event);
+        }
     }
 
     private void resetDownStates(MotionEvent event) {
@@ -503,7 +509,7 @@ public class NotificationPanelView extends PanelView implements
             return true;
         }
         if (event.getActionMasked() == MotionEvent.ACTION_DOWN && getExpandedFraction() == 1f
-                && mStatusBar.getBarState() != StatusBarState.KEYGUARD) {
+                && mStatusBar.getBarState() != StatusBarState.KEYGUARD && !mQsExpanded) {
 
             // Down in the empty area while fully expanded - go to QS.
             mQsTracking = true;
@@ -516,7 +522,7 @@ public class NotificationPanelView extends PanelView implements
         if (mExpandedHeight != 0) {
             handleQsDown(event);
         }
-        if (!mTwoFingerQsExpand && (mQsTracking || mQsExpanded)) {
+        if (!mTwoFingerQsExpand && mQsTracking) {
             onQsTouch(event);
             if (!mConflictingQsExpansionGesture) {
                 return true;
@@ -539,9 +545,15 @@ public class NotificationPanelView extends PanelView implements
         return true;
     }
 
+    private boolean isInQsArea(float x, float y) {
+        return mStatusBarState != StatusBarState.SHADE
+                || y <= mNotificationStackScroller.getBottomMostNotificationBottom()
+                || y <= mQsContainer.getY() + mQsContainer.getHeight();
+    }
+
     private void handleQsDown(MotionEvent event) {
         if (event.getActionMasked() == MotionEvent.ACTION_DOWN
-                && shouldQuickSettingsIntercept(event.getX(), event.getY(), 0)) {
+                && shouldQuickSettingsIntercept(event.getX(), event.getY(), -1)) {
             mQsTracking = true;
             onQsExpansionStarted();
             mInitialHeightOnTouch = mQsExpansionHeight;
@@ -627,8 +639,9 @@ public class NotificationPanelView extends PanelView implements
     }
 
     @Override
-    public void onOverscrolled(int amount) {
-        if (mIntercepting) {
+    public void onOverscrolled(float lastTouchX, float lastTouchY, int amount) {
+        if (mIntercepting && shouldQuickSettingsIntercept(lastTouchX, lastTouchY,
+                -1 /* yDiff: Not relevant here */)) {
             onQsExpansionStarted(amount);
             mInitialHeightOnTouch = mQsExpansionHeight;
             mInitialTouchY = mLastTouchY;
@@ -1037,7 +1050,7 @@ public class NotificationPanelView extends PanelView implements
         boolean onHeader = x >= header.getLeft() && x <= header.getRight()
                 && y >= header.getTop() && y <= header.getBottom();
         if (mQsExpanded) {
-            return onHeader || (mScrollView.isScrolledToBottom() && yDiff < 0);
+            return onHeader || (mScrollView.isScrolledToBottom() && yDiff < 0) && isInQsArea(x, y);
         } else {
             return onHeader;
         }
@@ -1087,8 +1100,9 @@ public class NotificationPanelView extends PanelView implements
         }
         if (!isInSettings()) {
             return mNotificationStackScroller.isScrolledToBottom();
+        } else {
+            return mScrollView.isScrolledToBottom();
         }
-        return super.isScrolledToBottom();
     }
 
     @Override
@@ -1354,6 +1368,9 @@ public class NotificationPanelView extends PanelView implements
                 || mStatusBar.getBarState() == StatusBarState.SHADE_LOCKED) {
             mAfforanceHelper.animateHideLeftRightIcon();
         }
+        if (mQsExpanded) {
+            mTwoFingerQsExpand = true;
+        }
     }
 
     @Override

packages/SystemUI/src/com/android/systemui/statusbar/phone/ObservableScrollView.java

@@ -31,6 +31,8 @@ public class ObservableScrollView extends ScrollView {
     private int mLastOverscrollAmount;
     private boolean mTouchEnabled = true;
     private boolean mHandlingTouchEvent;
+    private float mLastX;
+    private float mLastY;
 
     public ObservableScrollView(Context context, AttributeSet attrs) {
         super(context, attrs);
@@ -65,6 +67,8 @@ public class ObservableScrollView extends ScrollView {
     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         mHandlingTouchEvent = true;
+        mLastX = ev.getX();
+        mLastY = ev.getY();
         boolean result = super.onTouchEvent(ev);
         mHandlingTouchEvent = false;
         return result;
@@ -73,6 +77,8 @@ public class ObservableScrollView extends ScrollView {
     @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
         mHandlingTouchEvent = true;
+        mLastX = ev.getX();
+        mLastY = ev.getY();
         boolean result = super.onInterceptTouchEvent(ev);
         mHandlingTouchEvent = false;
         return result;
@@ -107,12 +113,12 @@ public class ObservableScrollView extends ScrollView {
     protected void onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY) {
         super.onOverScrolled(scrollX, scrollY, clampedX, clampedY);
         if (mListener != null && mLastOverscrollAmount > 0) {
-            mListener.onOverscrolled(mLastOverscrollAmount);
+            mListener.onOverscrolled(mLastX, mLastY, mLastOverscrollAmount);
         }
     }
 
     public interface Listener {
         void onScrollChanged();
-        void onOverscrolled(int amount);
+        void onOverscrolled(float lastX, float lastY, int amount);
     }
 }

packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java

@@ -2123,6 +2123,22 @@ public class NotificationStackScrollLayout extends ViewGroup
         return mDismissView.getHeight() + mPaddingBetweenElementsNormal;
     }
 
+    public float getBottomMostNotificationBottom() {
+        final int count = getChildCount();
+        float max = 0;
+        for (int childIdx = 0; childIdx < count; childIdx++) {
+            ExpandableView child = (ExpandableView) getChildAt(childIdx);
+            if (child.getVisibility() == GONE) {
+                continue;
+            }
+            float bottom = child.getTranslationY() + child.getActualHeight();
+            if (bottom > max) {
+                max = bottom;
+            }
+        }
+        return max + getTranslationY();
+    }
+
     /**
      * A listener that is notified when some child locations might have changed.
      */