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Commit 12de672d authored by Lyn Han's avatar Lyn Han
Browse files

Set views below shelf explicitly invisible to skip hardware rendering 

Bug: 191969252
Test: manual logs verified that viewState#applyToView
      invisibles views below shelf
Change-Id: I36e8a4e96d6830c5610649e5987b1e65add593fa
parent 576c548b

packages/SystemUI/src/com/android/systemui/statusbar/notification/stack/StackScrollAlgorithm.java

+17 −4
Original line number Diff line number Diff line
@@ -148,8 +148,22 @@ public class StackScrollAlgorithm { 
            AmbientState ambientState) {



        NotificationShelf shelf = ambientState.getShelf();

        if (shelf != null) {

        if (shelf == null) {

            return;

        }



        shelf.updateState(algorithmState, ambientState);



        // After the shelf has updated its yTranslation,

        // explicitly hide views below the shelf to skip rendering them in the hardware layer.

        final float shelfTop = shelf.getViewState().yTranslation;



        for (ExpandableView view : algorithmState.visibleChildren) {

            final float viewTop = view.getViewState().yTranslation;



            if (viewTop >= shelfTop) {

                view.getViewState().hidden = true;

            }

        }

    }
@@ -411,8 +425,7 @@ public class StackScrollAlgorithm { 
        } else {

            if (view != ambientState.getTrackedHeadsUpRow()) {

                if (ambientState.isExpansionChanging()) {

                    // Show all views. Views below the shelf will later be clipped (essentially

                    // hidden) in NotificationShelf.

                    // We later update shelf state, then hide views below the shelf.

                    viewState.hidden = false;

                    viewState.inShelf = algorithmState.firstViewInShelf != null

                            && i >= algorithmState.visibleChildren.indexOf(