1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License
15  */
16 
17 package com.android.systemui.statusbar.phone;
18 
19 import android.view.MotionEvent;
20 
21 /**
22  * An interface for a velocity tracker to delegate. To be implemented by different velocity tracking
23  * algorithms.
24  */
25 public interface VelocityTrackerInterface {
addMovement(MotionEvent event)26     public void addMovement(MotionEvent event);
computeCurrentVelocity(int units)27     public void computeCurrentVelocity(int units);
getXVelocity()28     public float getXVelocity();
getYVelocity()29     public float getYVelocity();
recycle()30     public void recycle();
31 }
32