Merge "Don't set expansion for downward (upward) scroll when the bouncer is hidden (shown)." into tm-dev

packages/SystemUI/src/com/android/systemui/dreams/touch/BouncerSwipeTouchHandler.java

@@ -117,15 +117,23 @@ public class BouncerSwipeTouchHandler implements DreamTouchHandler {
                         return false;
                     }
 
+                    // Don't set expansion for downward scroll when the bouncer is hidden.
+                    if (!mBouncerInitiallyShowing && (e1.getY() < e2.getY())) {
+                        return true;
+                    }
+
+                    // Don't set expansion for upward scroll when the bouncer is shown.
+                    if (mBouncerInitiallyShowing && (e1.getY() > e2.getY())) {
+                        return true;
+                    }
+
                     // For consistency, we adopt the expansion definition found in the
                     // PanelViewController. In this case, expansion refers to the view above the
                     // bouncer. As that view's expansion shrinks, the bouncer appears. The bouncer
                     // is fully hidden at full expansion (1) and fully visible when fully collapsed
                     // (0).
-                    final float dy = mBouncerInitiallyShowing ? e2.getY() - e1.getY()
+                    final float screenTravelPercentage = Math.abs(e1.getY() - e2.getY())
-                            : e1.getY() - e2.getY();
+                            / mCentralSurfaces.getDisplayHeight();
-                    final float screenTravelPercentage = Math.max(0,
-                            dy / mCentralSurfaces.getDisplayHeight());
                     setPanelExpansion(mBouncerInitiallyShowing
                             ? screenTravelPercentage : 1 - screenTravelPercentage);
                     return true;

packages/SystemUI/tests/src/com/android/systemui/dreams/touch/BouncerSwipeTouchHandlerTest.java

@@ -169,7 +169,7 @@ public class BouncerSwipeTouchHandlerTest extends SysuiTestCase {
      * Makes sure swiping up when bouncer initially showing doesn't change the expansion amount.
      */
     @Test
-    public void testSwipeUp_whenBouncerInitiallyShowing_keepsExpansionAtZero() {
+    public void testSwipeUp_whenBouncerInitiallyShowing_doesNotSetExpansion() {
         when(mCentralSurfaces.isBouncerShowing()).thenReturn(true);
 
         mTouchHandler.onSessionStart(mTouchSession);
@@ -191,21 +191,15 @@ public class BouncerSwipeTouchHandlerTest extends SysuiTestCase {
         assertThat(gestureListener.onScroll(event1, event2, 0, distanceY))
                 .isTrue();
 
-        // Ensure only called once
+        verify(mStatusBarKeyguardViewManager, never())
-        verify(mStatusBarKeyguardViewManager)
                 .onPanelExpansionChanged(anyFloat(), anyBoolean(), anyBoolean());
-
-        // TODO(b/227348372): update the logic and also this test.
-        // Ensure the expansion is kept at 0.
-        verify(mStatusBarKeyguardViewManager).onPanelExpansionChanged(eq(0f), eq(false),
-                eq(true));
     }
 
     /**
      * Makes sure swiping down when bouncer initially hidden doesn't change the expansion amount.
      */
     @Test
-    public void testSwipeDown_whenBouncerInitiallyHidden_keepsExpansionAtOne() {
+    public void testSwipeDown_whenBouncerInitiallyHidden_doesNotSetExpansion() {
         mTouchHandler.onSessionStart(mTouchSession);
         ArgumentCaptor<GestureDetector.OnGestureListener> gestureListenerCaptor =
                 ArgumentCaptor.forClass(GestureDetector.OnGestureListener.class);
@@ -225,14 +219,8 @@ public class BouncerSwipeTouchHandlerTest extends SysuiTestCase {
         assertThat(gestureListener.onScroll(event1, event2, 0, distanceY))
                 .isTrue();
 
-        // Ensure only called once
+        verify(mStatusBarKeyguardViewManager, never())
-        verify(mStatusBarKeyguardViewManager)
                 .onPanelExpansionChanged(anyFloat(), anyBoolean(), anyBoolean());
-
-        // TODO(b/227348372): update the logic and also this test.
-        // Ensure the expansion is kept at 1.
-        verify(mStatusBarKeyguardViewManager).onPanelExpansionChanged(eq(1f), eq(false),
-                eq(true));
     }
 
     /**