diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
index ce7fa0d..9dce984 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/AppToOverviewAnimationProvider.java
@@ -19,7 +19,7 @@
 import static com.android.launcher3.LauncherState.OVERVIEW;
 import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
 import static com.android.launcher3.anim.Interpolators.TOUCH_RESPONSE_INTERPOLATOR;
-import static com.android.launcher3.uioverrides.DepthController.DEPTH;
+import static com.android.launcher3.statehandlers.DepthController.DEPTH;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_CLOSING;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_OPENING;
 
@@ -34,7 +34,7 @@
 import com.android.launcher3.AbstractFloatingView;
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.anim.AnimationSuccessListener;
-import com.android.launcher3.uioverrides.DepthController;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.quickstep.util.AppWindowAnimationHelper;
 import com.android.quickstep.util.AppWindowAnimationHelper.TransformParams;
 import com.android.quickstep.util.RemoteAnimationProvider;
@@ -105,12 +105,6 @@
             mRecentsView.setRunningTaskIconScaledDown(true);
         }
 
-        DepthController depthController = mActivityInterface.getDepthController();
-        if (depthController != null) {
-            // Update the surface to be the lowest closing app surface
-            depthController.setSurfaceToLauncher(mRecentsView);
-        }
-
         AnimatorSet anim = new AnimatorSet();
         anim.addListener(new AnimationSuccessListener() {
             @Override
@@ -123,11 +117,17 @@
         });
         if (mActivity == null) {
             Log.e(TAG, "Animation created, before activity");
-            anim.play(ValueAnimator.ofInt(0, 1).setDuration(RECENTS_LAUNCH_DURATION))
-                    .with(createDepthAnimator(depthController));
             return anim;
         }
 
+        DepthController depthController = mActivityInterface.getDepthController();
+        if (depthController != null) {
+            anim.play(ObjectAnimator.ofFloat(depthController, DEPTH,
+                    BACKGROUND_APP.getDepth(mActivity),
+                    OVERVIEW.getDepth(mActivity))
+                    .setDuration(RECENTS_LAUNCH_DURATION));
+        }
+
         RemoteAnimationTargets targets = new RemoteAnimationTargets(appTargets,
                 wallpaperTargets, MODE_CLOSING);
 
@@ -135,8 +135,6 @@
         RemoteAnimationTargetCompat runningTaskTarget = targets.findTask(mTargetTaskId);
         if (runningTaskTarget == null) {
             Log.e(TAG, "No closing app");
-            anim.play(ValueAnimator.ofInt(0, 1).setDuration(RECENTS_LAUNCH_DURATION))
-                    .with(createDepthAnimator(depthController));
             return anim;
         }
 
@@ -183,8 +181,6 @@
                 transaction.apply();
             });
         }
-        anim.play(valueAnimator)
-                .with(createDepthAnimator(depthController));
         return anim;
     }
 
@@ -196,15 +192,4 @@
     long getRecentsLaunchDuration() {
         return RECENTS_LAUNCH_DURATION;
     }
-
-    private Animator createDepthAnimator(DepthController depthController) {
-        if (depthController == null) {
-            // Dummy animation
-            return ValueAnimator.ofInt(0);
-        }
-        return ObjectAnimator.ofFloat(depthController, DEPTH,
-                BACKGROUND_APP.getDepth(mActivity),
-                OVERVIEW.getDepth(mActivity))
-                .setDuration(RECENTS_LAUNCH_DURATION);
-    }
 }
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java
index 55e6ba2..455ae76 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherActivityInterface.java
@@ -55,9 +55,9 @@
 import com.android.launcher3.allapps.DiscoveryBounce;
 import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.appprediction.PredictionUiStateManager;
+import com.android.launcher3.statehandlers.DepthController;
+import com.android.launcher3.statehandlers.DepthController.ClampedDepthProperty;
 import com.android.launcher3.touch.PagedOrientationHandler;
-import com.android.launcher3.uioverrides.DepthController;
-import com.android.launcher3.uioverrides.DepthController.ClampedDepthProperty;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.launcher3.views.FloatingIconView;
 import com.android.quickstep.SysUINavigationMode.Mode;
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java
index cafdb62..5bac844 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/LauncherSwipeHandler.java
@@ -294,7 +294,6 @@
         }
 
         setupRecentsViewUi();
-        mActivityInterface.getDepthController().setSurfaceToLauncher(mRecentsView);
 
         if (mDeviceState.getNavMode() == TWO_BUTTONS) {
             // If the device is in two button mode, swiping up will show overview with predictions
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskViewUtils.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskViewUtils.java
index 7ec083e..6a3e1fe 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskViewUtils.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/TaskViewUtils.java
@@ -19,7 +19,7 @@
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.anim.Interpolators.TOUCH_RESPONSE_INTERPOLATOR;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
-import static com.android.launcher3.uioverrides.DepthController.DEPTH;
+import static com.android.launcher3.statehandlers.DepthController.DEPTH;
 import static com.android.systemui.shared.system.RemoteAnimationTargetCompat.MODE_OPENING;
 
 import android.animation.Animator;
@@ -35,7 +35,7 @@
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.uioverrides.DepthController;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.quickstep.util.AppWindowAnimationHelper;
 import com.android.quickstep.util.MultiValueUpdateListener;
 import com.android.quickstep.views.RecentsView;
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
index a027fea..24703bd 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/LauncherRecentsView.java
@@ -37,9 +37,9 @@
 import android.view.View;
 import android.widget.FrameLayout;
 
+import com.android.launcher3.BaseQuickstepLauncher;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.Hotseat;
-import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
 import com.android.launcher3.LauncherStateManager.StateListener;
 import com.android.launcher3.R;
@@ -47,8 +47,8 @@
 import com.android.launcher3.appprediction.PredictionUiStateManager;
 import com.android.launcher3.appprediction.PredictionUiStateManager.Client;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.states.RotationHelper;
-import com.android.launcher3.uioverrides.DepthController;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.util.TraceHelper;
 import com.android.launcher3.views.ScrimView;
@@ -63,7 +63,8 @@
  * {@link RecentsView} used in Launcher activity
  */
 @TargetApi(Build.VERSION_CODES.O)
-public class LauncherRecentsView extends RecentsView<Launcher> implements StateListener {
+public class LauncherRecentsView extends RecentsView<BaseQuickstepLauncher>
+        implements StateListener {
 
     private static final Rect sTempRect = new Rect();
 
diff --git a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
index 68c51a0..57a9940 100644
--- a/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/recents_ui_overrides/src/com/android/quickstep/views/RecentsView.java
@@ -30,7 +30,7 @@
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_OVERVIEW_ACTIONS;
 import static com.android.launcher3.config.FeatureFlags.ENABLE_QUICKSTEP_LIVE_TILE;
-import static com.android.launcher3.uioverrides.DepthController.DEPTH;
+import static com.android.launcher3.statehandlers.DepthController.DEPTH;
 import static com.android.launcher3.uioverrides.touchcontrollers.TaskViewTouchController.SUCCESS_TRANSITION_PROGRESS;
 import static com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch.TAP;
 import static com.android.launcher3.userevent.nano.LauncherLogProto.ControlType.CLEAR_ALL_BUTTON;
@@ -96,9 +96,9 @@
 import com.android.launcher3.compat.AccessibilityManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.graphics.RotationMode;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.states.RotationHelper;
 import com.android.launcher3.touch.PagedOrientationHandler.CurveProperties;
-import com.android.launcher3.uioverrides.DepthController;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Direction;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch;
diff --git a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
index ec66f11..83c67bb 100644
--- a/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
+++ b/quickstep/src/com/android/launcher3/BaseQuickstepLauncher.java
@@ -43,8 +43,9 @@
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.proxy.ProxyActivityStarter;
 import com.android.launcher3.proxy.StartActivityParams;
+import com.android.launcher3.statehandlers.BackButtonAlphaHandler;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.touch.PagedOrientationHandler;
-import com.android.launcher3.uioverrides.BackButtonAlphaHandler;
 import com.android.launcher3.uioverrides.RecentsViewStateController;
 import com.android.launcher3.util.UiThreadHelper;
 import com.android.quickstep.RecentsModel;
@@ -67,6 +68,7 @@
 public abstract class BaseQuickstepLauncher extends Launcher
         implements NavigationModeChangeListener {
 
+    private DepthController mDepthController = new DepthController(this);
     protected SystemActions mSystemActions;
 
     /**
@@ -249,6 +251,10 @@
                 new BackButtonAlphaHandler(this)};
     }
 
+    public DepthController getDepthController() {
+        return mDepthController;
+    }
+
     @Override
     protected ScaleAndTranslation getOverviewScaleAndTranslationForNormalState() {
         if (SysUINavigationMode.getMode(this) == Mode.NO_BUTTON) {
@@ -294,6 +300,10 @@
             onLauncherStateOrFocusChanged();
         }
 
+        if ((changeBits & ACTIVITY_STATE_STARTED) != 0) {
+            mDepthController.setActivityStarted(isStarted());
+        }
+
         super.onActivityFlagsChanged(changeBits);
     }
 
diff --git a/quickstep/src/com/android/launcher3/QuickstepAppTransitionManagerImpl.java b/quickstep/src/com/android/launcher3/QuickstepAppTransitionManagerImpl.java
index c93a4ba..a30e102 100644
--- a/quickstep/src/com/android/launcher3/QuickstepAppTransitionManagerImpl.java
+++ b/quickstep/src/com/android/launcher3/QuickstepAppTransitionManagerImpl.java
@@ -33,7 +33,7 @@
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.launcher3.config.FeatureFlags.KEYGUARD_ANIMATION;
 import static com.android.launcher3.dragndrop.DragLayer.ALPHA_INDEX_TRANSITIONS;
-import static com.android.launcher3.uioverrides.DepthController.DEPTH;
+import static com.android.launcher3.statehandlers.DepthController.DEPTH;
 import static com.android.launcher3.views.FloatingIconView.SHAPE_PROGRESS_DURATION;
 import static com.android.quickstep.TaskUtils.taskIsATargetWithMode;
 import static com.android.systemui.shared.system.QuickStepContract.getWindowCornerRadius;
@@ -72,7 +72,7 @@
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.shortcuts.DeepShortcutView;
-import com.android.launcher3.uioverrides.DepthController;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.util.DynamicResource;
 import com.android.launcher3.util.MultiValueAlpha;
 import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
@@ -622,7 +622,7 @@
             backgroundRadiusAnim.addListener(new AnimatorListenerAdapter() {
                 @Override
                 public void onAnimationEnd(Animator animation) {
-                    depthController.setSurfaceToLauncher(mLauncher.getDragLayer());
+                    depthController.setSurfaceToApp(null);
                 }
             });
         }
diff --git a/quickstep/src/com/android/launcher3/uioverrides/BackButtonAlphaHandler.java b/quickstep/src/com/android/launcher3/statehandlers/BackButtonAlphaHandler.java
similarity index 95%
rename from quickstep/src/com/android/launcher3/uioverrides/BackButtonAlphaHandler.java
rename to quickstep/src/com/android/launcher3/statehandlers/BackButtonAlphaHandler.java
index e82a504..983702a 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/BackButtonAlphaHandler.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/BackButtonAlphaHandler.java
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.android.launcher3.uioverrides;
+package com.android.launcher3.statehandlers;
 
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 import static com.android.quickstep.AnimatedFloat.VALUE;
@@ -29,6 +29,9 @@
 import com.android.quickstep.SysUINavigationMode;
 import com.android.quickstep.SystemUiProxy;
 
+/**
+ * State handler for animating back button alpha
+ */
 public class BackButtonAlphaHandler implements LauncherStateManager.StateHandler {
 
     private final BaseQuickstepLauncher mLauncher;
diff --git a/quickstep/src/com/android/launcher3/uioverrides/DepthController.java b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
similarity index 84%
rename from quickstep/src/com/android/launcher3/uioverrides/DepthController.java
rename to quickstep/src/com/android/launcher3/statehandlers/DepthController.java
index 8995a7e..24ba89a 100644
--- a/quickstep/src/com/android/launcher3/uioverrides/DepthController.java
+++ b/quickstep/src/com/android/launcher3/statehandlers/DepthController.java
@@ -14,13 +14,14 @@
  * limitations under the License.
  */
 
-package com.android.launcher3.uioverrides;
+package com.android.launcher3.statehandlers;
 
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 
 import android.os.IBinder;
 import android.util.FloatProperty;
 import android.view.View;
+import android.view.ViewTreeObserver;
 
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherState;
@@ -77,6 +78,16 @@
         }
     }
 
+    private final ViewTreeObserver.OnDrawListener mOnDrawListener =
+            new ViewTreeObserver.OnDrawListener() {
+                @Override
+                public void onDraw() {
+                    View view = mLauncher.getDragLayer();
+                    setSurface(new SurfaceControlCompat(view));
+                    view.post(() -> view.getViewTreeObserver().removeOnDrawListener(this));
+                }
+            };
+
     private final Launcher mLauncher;
     /**
      * Blur radius when completely zoomed out, in pixels.
@@ -103,21 +114,28 @@
     }
 
     /**
+     * Sets if the underlying activity is started or not
+     */
+    public void setActivityStarted(boolean isStarted) {
+        if (isStarted) {
+            mLauncher.getDragLayer().getViewTreeObserver().addOnDrawListener(mOnDrawListener);
+        } else {
+            mLauncher.getDragLayer().getViewTreeObserver().removeOnDrawListener(mOnDrawListener);
+            setSurface(null);
+        }
+    }
+
+    /**
      * Sets the specified app target surface to apply the blur to.
      */
     public void setSurfaceToApp(RemoteAnimationTargetCompat target) {
         if (target != null) {
             setSurface(target.leash);
+        } else {
+            setActivityStarted(mLauncher.isStarted());
         }
     }
 
-    /**
-     * Sets the surface to apply the blur to as the launcher surface.
-     */
-    public void setSurfaceToLauncher(View v) {
-        setSurface(v != null ? new SurfaceControlCompat(v) : null);
-    }
-
     private void setSurface(SurfaceControlCompat surface) {
         if (mSurface != surface) {
             mSurface = surface;
diff --git a/quickstep/src/com/android/quickstep/BaseActivityInterface.java b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
index 2a569f5..94ef15a 100644
--- a/quickstep/src/com/android/quickstep/BaseActivityInterface.java
+++ b/quickstep/src/com/android/quickstep/BaseActivityInterface.java
@@ -32,8 +32,8 @@
 import com.android.launcher3.BaseDraggingActivity;
 import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.anim.AnimatorPlaybackController;
+import com.android.launcher3.statehandlers.DepthController;
 import com.android.launcher3.touch.PagedOrientationHandler;
-import com.android.launcher3.uioverrides.DepthController;
 import com.android.quickstep.util.ActivityInitListener;
 import com.android.quickstep.util.ShelfPeekAnim;
 import com.android.systemui.shared.recents.model.ThumbnailData;
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index a83a694..0a22342 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -77,7 +77,6 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
-import android.view.ViewTreeObserver;
 import android.view.accessibility.AccessibilityEvent;
 import android.view.animation.OvershootInterpolator;
 import android.widget.Toast;
@@ -124,7 +123,6 @@
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.touch.AllAppsSwipeController;
 import com.android.launcher3.touch.ItemClickHandler;
-import com.android.launcher3.uioverrides.DepthController;
 import com.android.launcher3.uioverrides.plugins.PluginManagerWrapper;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
 import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
@@ -326,19 +324,6 @@
     private boolean mDeferOverlayCallbacks;
     private final Runnable mDeferredOverlayCallbacks = this::checkIfOverlayStillDeferred;
 
-    private DepthController mDepthController =
-            new DepthController(this);
-
-    private final ViewTreeObserver.OnDrawListener mOnDrawListener =
-            new ViewTreeObserver.OnDrawListener() {
-                @Override
-                public void onDraw() {
-                    getDepthController().setSurfaceToLauncher(mDragLayer);
-                    mDragLayer.post(() -> mDragLayer.getViewTreeObserver().removeOnDrawListener(
-                            this));
-                }
-            };
-
     private long mLastTouchUpTime = -1;
 
     @Override
@@ -942,8 +927,6 @@
         final int origDragLayerChildCount = mDragLayer.getChildCount();
         super.onStop();
 
-        mDragLayer.getViewTreeObserver().removeOnDrawListener(mOnDrawListener);
-
         if (mDeferOverlayCallbacks) {
             checkIfOverlayStillDeferred();
         } else {
@@ -956,7 +939,6 @@
 
         NotificationListener.removeNotificationsChangedListener();
         getStateManager().moveToRestState();
-        getDepthController().setSurfaceToLauncher(null);
 
         // Workaround for b/78520668, explicitly trim memory once UI is hidden
         onTrimMemory(TRIM_MEMORY_UI_HIDDEN);
@@ -984,7 +966,6 @@
         if (!mDeferOverlayCallbacks) {
             mOverlayManager.onActivityStarted(this);
         }
-        mDragLayer.getViewTreeObserver().addOnDrawListener(mOnDrawListener);
 
         mAppWidgetHost.setListenIfResumed(true);
         TraceHelper.INSTANCE.endSection(traceToken);
@@ -2716,8 +2697,7 @@
     }
 
     protected StateHandler[] createStateHandlers() {
-        return new StateHandler[] { getAllAppsController(), getWorkspace(),
-                getDepthController() };
+        return new StateHandler[] { getAllAppsController(), getWorkspace() };
     }
 
     public TouchController[] createTouchControllers() {
@@ -2754,10 +2734,6 @@
         return Stream.of(APP_INFO, WIDGETS, INSTALL);
     }
 
-    public DepthController getDepthController() {
-        return mDepthController;
-    }
-
     public static Launcher getLauncher(Context context) {
         return fromContext(context);
     }
diff --git a/src_ui_overrides/com/android/launcher3/uioverrides/DepthController.java b/src_ui_overrides/com/android/launcher3/uioverrides/DepthController.java
deleted file mode 100644
index 7ad85e2..0000000
--- a/src_ui_overrides/com/android/launcher3/uioverrides/DepthController.java
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.android.launcher3.uioverrides;
-
-
-import android.util.FloatProperty;
-import android.view.View;
-
-import com.android.launcher3.Launcher;
-import com.android.launcher3.LauncherState;
-import com.android.launcher3.LauncherStateManager;
-import com.android.launcher3.anim.PendingAnimation;
-import com.android.launcher3.states.StateAnimationConfig;
-
-/**
- * Controls blur and wallpaper zoom, for the Launcher surface only.
- */
-public class DepthController implements LauncherStateManager.StateHandler {
-
-    public static final FloatProperty<DepthController> DEPTH =
-            new FloatProperty<DepthController>("depth") {
-                @Override
-                public void setValue(DepthController depthController, float depth) {}
-
-                @Override
-                public Float get(DepthController depthController) {
-                    return 0f;
-                }
-            };
-
-    public DepthController(Launcher l) {}
-
-    public void setSurfaceToLauncher(View v) {}
-
-    @Override
-    public void setState(LauncherState toState) {}
-
-    @Override
-    public void setStateWithAnimation(LauncherState toState, StateAnimationConfig config,
-            PendingAnimation animation) { }
-}