1 /*
2  * Copyright (C) 2015 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.incallui.answer.impl.classifier;
18 
19 import android.view.MotionEvent;
20 
21 /** A classifier which looks at the total number of traces in the whole gesture. */
22 class PointerCountClassifier extends GestureClassifier {
23   private int count;
24 
PointerCountClassifier(ClassifierData classifierData)25   public PointerCountClassifier(ClassifierData classifierData) {
26     count = 0;
27   }
28 
29   @Override
getTag()30   public String getTag() {
31     return "PTR_CNT";
32   }
33 
34   @Override
onTouchEvent(MotionEvent event)35   public void onTouchEvent(MotionEvent event) {
36     int action = event.getActionMasked();
37 
38     if (action == MotionEvent.ACTION_DOWN) {
39       count = 1;
40     }
41 
42     if (action == MotionEvent.ACTION_POINTER_DOWN) {
43       ++count;
44     }
45   }
46 
47   @Override
getFalseTouchEvaluation()48   public float getFalseTouchEvaluation() {
49     return PointerCountEvaluator.evaluate(count);
50   }
51 }
52