diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index 158c540..d559b44 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -237,16 +237,27 @@
             int cx = r.centerX();
             int cy = r.centerY();
             r.offset(-cx, -cy);
+            scaleRect(r, scale);
+            r.offset(cx, cy);
+        }
+    }
 
+    public static void scaleRect(Rect r, float scale) {
+        if (scale != 1.0f) {
             r.left = (int) (r.left * scale + 0.5f);
             r.top = (int) (r.top * scale + 0.5f);
             r.right = (int) (r.right * scale + 0.5f);
             r.bottom = (int) (r.bottom * scale + 0.5f);
-
-            r.offset(cx, cy);
         }
     }
 
+    public static void insetRect(Rect r, Rect insets) {
+        r.left = Math.min(r.right, r.left + insets.left);
+        r.top = Math.min(r.bottom, r.top + insets.top);
+        r.right = Math.max(r.left, r.right - insets.right);
+        r.bottom = Math.max(r.top, r.bottom - insets.bottom);
+    }
+
     public static float shrinkRect(Rect r, float scaleX, float scaleY) {
         float scale = Math.min(Math.min(scaleX, scaleY), 1.0f);
         if (scale < 1.0f) {
@@ -261,6 +272,10 @@
         return scale;
     }
 
+    public static float mapRange(float value, float min, float max) {
+        return min + (value * (max - min));
+    }
+
     public static boolean isSystemApp(Context context, Intent intent) {
         PackageManager pm = context.getPackageManager();
         ComponentName cn = intent.getComponent();
diff --git a/src/com/android/launcher3/anim/Interpolators.java b/src/com/android/launcher3/anim/Interpolators.java
index 2343654..0dcebe3 100644
--- a/src/com/android/launcher3/anim/Interpolators.java
+++ b/src/com/android/launcher3/anim/Interpolators.java
@@ -50,6 +50,9 @@
 
     public static final Interpolator OVERSHOOT_0 = new OvershootInterpolator(0);
 
+    public static final Interpolator TOUCH_RESPONSE_INTERPOLATOR =
+            new PathInterpolator(0.3f, 0f, 0.1f, 1f);
+
     /**
      * Inversion of zInterpolate, compounded with an ease-out.
      */