Add wallpaper zoom to areas that have blur

Whenever blurring, the wallpaper should also zoom out. This is the
mental model of our Depth System.

Test: manual
Bug: 149792636
Change-Id: I1783eb87fefeb6f917f0ba64f2c6ec8f1f2004fa
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 1413a5c..921d34a 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -124,7 +124,7 @@
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.touch.AllAppsSwipeController;
 import com.android.launcher3.touch.ItemClickHandler;
-import com.android.launcher3.uioverrides.BackgroundBlurController;
+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;
@@ -326,14 +326,14 @@
     private boolean mDeferOverlayCallbacks;
     private final Runnable mDeferredOverlayCallbacks = this::checkIfOverlayStillDeferred;
 
-    private BackgroundBlurController mBackgroundBlurController =
-            new BackgroundBlurController(this);
+    private DepthController mDepthController =
+            new DepthController(this);
 
     private final ViewTreeObserver.OnDrawListener mOnDrawListener =
             new ViewTreeObserver.OnDrawListener() {
                 @Override
                 public void onDraw() {
-                    getBackgroundBlurController().setSurfaceToLauncher(mDragLayer);
+                    getDepthController().setSurfaceToLauncher(mDragLayer);
                     mDragLayer.post(() -> mDragLayer.getViewTreeObserver().removeOnDrawListener(
                             this));
                 }
@@ -954,7 +954,7 @@
 
         NotificationListener.removeNotificationsChangedListener();
         getStateManager().moveToRestState();
-        getBackgroundBlurController().setSurfaceToLauncher(null);
+        getDepthController().setSurfaceToLauncher(null);
 
         // Workaround for b/78520668, explicitly trim memory once UI is hidden
         onTrimMemory(TRIM_MEMORY_UI_HIDDEN);
@@ -2708,7 +2708,7 @@
 
     protected StateHandler[] createStateHandlers() {
         return new StateHandler[] { getAllAppsController(), getWorkspace(),
-                getBackgroundBlurController() };
+                getDepthController() };
     }
 
     public TouchController[] createTouchControllers() {
@@ -2745,8 +2745,8 @@
         return Stream.of(APP_INFO, WIDGETS, INSTALL);
     }
 
-    public BackgroundBlurController getBackgroundBlurController() {
-        return mBackgroundBlurController;
+    public DepthController getDepthController() {
+        return mDepthController;
     }
 
     public static Launcher getLauncher(Context context) {
diff --git a/src/com/android/launcher3/LauncherState.java b/src/com/android/launcher3/LauncherState.java
index df71f16..6ee82cd 100644
--- a/src/com/android/launcher3/LauncherState.java
+++ b/src/com/android/launcher3/LauncherState.java
@@ -271,11 +271,13 @@
     }
 
     /**
-     * The amount of blur to apply to the background of either the app or Launcher surface in this
-     * state.
+     * The amount of blur and wallpaper zoom to apply to the background of either the app
+     * or Launcher surface in this state. Should be a number between 0 and 1, inclusive.
+     *
+     * 0 means completely zoomed in, without blurs. 1 is zoomed out, with blurs.
      */
-    public int getBackgroundBlurRadius(Context context) {
-        return 0;
+    public float getDepth(Context context) {
+        return 0f;
     }
 
     public String getDescription(Launcher launcher) {
diff --git a/src/com/android/launcher3/folder/FolderAnimationManager.java b/src/com/android/launcher3/folder/FolderAnimationManager.java
index f72e674..b83609e 100644
--- a/src/com/android/launcher3/folder/FolderAnimationManager.java
+++ b/src/com/android/launcher3/folder/FolderAnimationManager.java
@@ -21,7 +21,6 @@
 import static com.android.launcher3.folder.ClippedFolderIconLayoutRule.MAX_NUM_ITEMS_IN_PREVIEW;
 import static com.android.launcher3.graphics.IconShape.getShape;
 import static com.android.launcher3.icons.GraphicsUtils.setColorAlphaBound;
-import static com.android.launcher3.uioverrides.BackgroundBlurController.BACKGROUND_BLUR;
 
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
@@ -47,7 +46,6 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.anim.PropertyResetListener;
 import com.android.launcher3.dragndrop.DragLayer;
-import com.android.launcher3.uioverrides.BackgroundBlurController;
 import com.android.launcher3.util.Themes;
 
 import java.util.List;
@@ -222,14 +220,6 @@
         Animator z = getAnimator(mFolder, View.TRANSLATION_Z, -mFolder.getElevation(), 0);
         play(a, z, mIsOpening ? midDuration : 0, midDuration);
 
-        BackgroundBlurController blurController = mLauncher.getBackgroundBlurController();
-        int stateBackgroundBlur = mLauncher.getStateManager().getState()
-                .getBackgroundBlurRadius(mLauncher);
-        int folderBackgroundBlurAdjustment = blurController.getFolderBackgroundBlurAdjustment();
-        play(a, ObjectAnimator.ofInt(blurController, BACKGROUND_BLUR, mIsOpening
-                ? stateBackgroundBlur + folderBackgroundBlurAdjustment
-                : stateBackgroundBlur));
-
         // Store clip variables
         CellLayout cellLayout = mContent.getCurrentCellLayout();
         boolean folderClipChildren = mFolder.getClipChildren();