Merge "Fully expand QSPanel on scroll" into sc-dev

packages/SystemUI/plugin/src/com/android/systemui/plugins/qs/QS.java

@@ -35,7 +35,7 @@ public interface QS extends FragmentBase {
 
     String ACTION = "com.android.systemui.action.PLUGIN_QS";
 
-    int VERSION = 10;
+    int VERSION = 11;
 
     String TAG = "QS";
 
@@ -108,6 +108,20 @@ public interface QS extends FragmentBase {
      */
     void setCollapsedMediaVisibilityChangedListener(Consumer<Boolean> listener);
 
+    /**
+     * Set a scroll listener for the QSPanel container
+     */
+    default void setScrollListener(ScrollListener scrollListener) {}
+
+    /**
+     * Callback for when QSPanel container is scrolled
+     */
+    @ProvidesInterface(version = ScrollListener.VERSION)
+    interface ScrollListener {
+        int VERSION = 1;
+        void onQsPanelScrollChanged(int scrollY);
+    }
+
     @ProvidesInterface(version = HeightListener.VERSION)
     interface HeightListener {
         int VERSION = 1;

packages/SystemUI/src/com/android/systemui/qs/QSContainerImpl.java

@@ -215,7 +215,7 @@ public class QSContainerImpl extends FrameLayout {
 
     public void setExpansion(float expansion) {
         mQsExpansion = expansion;
-        mQSPanelContainer.setScrollingEnabled(expansion > 0.0f);
+        mQSPanelContainer.setScrollingEnabled(expansion > 0f);
         updateExpansion();
     }
 

packages/SystemUI/src/com/android/systemui/qs/QSFragment.java

@@ -108,6 +108,7 @@ public class QSFragment extends LifecycleFragment implements QS, CommandQueue.Ca
     private QSPanelController mQSPanelController;
     private QuickQSPanelController mQuickQSPanelController;
     private QSCustomizerController mQSCustomizerController;
+    private ScrollListener mScrollListener;
     private FeatureFlags mFeatureFlags;
     /**
      * When true, QS will translate from outside the screen. It will be clipped with parallax
@@ -174,6 +175,9 @@ public class QSFragment extends LifecycleFragment implements QS, CommandQueue.Ca
                     // Lazily update animators whenever the scrolling changes
                     mQSAnimator.onQsScrollingChanged();
                     mHeader.setExpandedScrollAmount(scrollY);
+                    if (mScrollListener != null) {
+                        mScrollListener.onQsPanelScrollChanged(scrollY);
+                    }
         });
         mQSDetail = view.findViewById(R.id.qs_detail);
         mHeader = view.findViewById(R.id.header);
@@ -213,6 +217,11 @@ public class QSFragment extends LifecycleFragment implements QS, CommandQueue.Ca
                 });
     }
 
+    @Override
+    public void setScrollListener(ScrollListener listener) {
+        mScrollListener = listener;
+    }
+
     @Override
     public void onDestroy() {
         super.onDestroy();
@@ -222,6 +231,7 @@ public class QSFragment extends LifecycleFragment implements QS, CommandQueue.Ca
         }
         mQSCustomizerController.setQs(null);
         mQsDetailDisplayer.setQsPanelController(null);
+        mScrollListener = null;
     }
 
     @Override

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

@@ -3477,6 +3477,14 @@ public class NotificationPanelViewController extends PanelViewController {
         return !isFullWidth() || !mShowIconsWhenExpanded;
     }
 
+    public final QS.ScrollListener mScrollListener = scrollY -> {
+        if (scrollY > 0 && !mQsFullyExpanded) {
+            if (DEBUG) Log.d(TAG, "Scrolling while not expanded. Forcing expand");
+            // If we are scrolling QS, we should be fully expanded.
+            expandWithQs();
+        }
+    };
+
     private final FragmentListener mFragmentListener = new FragmentListener() {
         @Override
         public void onFragmentViewCreated(String tag, Fragment fragment) {
@@ -3506,6 +3514,7 @@ public class NotificationPanelViewController extends PanelViewController {
             });
             mLockscreenShadeTransitionController.setQS(mQs);
             mNotificationStackScrollLayoutController.setQsContainer((ViewGroup) mQs.getView());
+            mQs.setScrollListener(mScrollListener);
             updateQsExpansion();
         }