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.systemui.classifier; 18 19 import android.view.MotionEvent; 20 21 /** 22 * A classifier which looks at the total number of traces in the whole gesture. 23 */ 24 public 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
