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
17package com.android.systemui.classifier;
18
19import android.view.MotionEvent;
20
21/**
22 * A classifier which looks at the total number of traces in the whole gesture.
23 */
24public class PointerCountClassifier extends GestureClassifier {
25    private int mCount;
26
27    public PointerCountClassifier(ClassifierData classifierData) {
28        mCount = 0;
29    }
30
31    @Override
32    public String getTag() {
33        return "PTR_CNT";
34    }
35
36    @Override
37    public void onTouchEvent(MotionEvent event) {
38        int action = event.getActionMasked();
39
40        if (action == MotionEvent.ACTION_DOWN) {
41            mCount = 1;
42        }
43
44        if (action == MotionEvent.ACTION_POINTER_DOWN) {
45            ++mCount;
46        }
47    }
48
49    @Override
50    public float getFalseTouchEvaluation(int type) {
51        return PointerCountEvaluator.evaluate(mCount);
52    }
53}
54