Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 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.content.Context; |
| 20 | import android.database.ContentObserver; |
| 21 | import android.hardware.SensorEvent; |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 22 | import android.os.Handler; |
| 23 | import android.os.UserHandle; |
| 24 | import android.provider.Settings; |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 25 | import android.util.DisplayMetrics; |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 26 | import android.view.MotionEvent; |
| 27 | |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 28 | import java.util.ArrayDeque; |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 29 | import java.util.ArrayList; |
| 30 | |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 31 | /** |
| 32 | * An classifier trying to determine whether it is a human interacting with the phone or not. |
| 33 | */ |
| 34 | public class HumanInteractionClassifier extends Classifier { |
| 35 | private static final String HIC_ENABLE = "HIC_enable"; |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 36 | private static final float FINGER_DISTANCE = 0.1f; |
Adrian Roos | 5c42df1 | 2016-01-27 08:48:42 -0800 | [diff] [blame] | 37 | |
| 38 | /** Default value for the HIC_ENABLE setting: 1 - enabled, 0 - disabled */ |
| 39 | private static final int HIC_ENABLE_DEFAULT = 1; |
| 40 | |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 41 | private static HumanInteractionClassifier sInstance = null; |
| 42 | |
| 43 | private final Handler mHandler = new Handler(); |
| 44 | private final Context mContext; |
| 45 | |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 46 | private ArrayList<StrokeClassifier> mStrokeClassifiers = new ArrayList<>(); |
| 47 | private ArrayList<GestureClassifier> mGestureClassifiers = new ArrayList<>(); |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 48 | private ArrayDeque<MotionEvent> mBufferedEvents = new ArrayDeque<>(); |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 49 | private final int mStrokeClassifiersSize; |
| 50 | private final int mGestureClassifiersSize; |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 51 | private final float mDpi; |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 52 | |
| 53 | private HistoryEvaluator mHistoryEvaluator; |
Blazej Magnowski | 52af6b6 | 2015-09-30 15:46:17 -0700 | [diff] [blame] | 54 | private boolean mEnableClassifier = false; |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 55 | private int mCurrentType = Classifier.GENERIC; |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 56 | |
| 57 | protected final ContentObserver mSettingsObserver = new ContentObserver(mHandler) { |
| 58 | @Override |
| 59 | public void onChange(boolean selfChange) { |
| 60 | updateConfiguration(); |
| 61 | } |
| 62 | }; |
| 63 | |
| 64 | private HumanInteractionClassifier(Context context) { |
| 65 | mContext = context; |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 66 | DisplayMetrics displayMetrics = mContext.getResources().getDisplayMetrics(); |
| 67 | |
| 68 | // If the phone is rotated to landscape, the calculations would be wrong if xdpi and ydpi |
| 69 | // were to be used separately. Due negligible differences in xdpi and ydpi we can just |
| 70 | // take the average. |
| 71 | mDpi = (displayMetrics.xdpi + displayMetrics.ydpi) / 2.0f; |
| 72 | mClassifierData = new ClassifierData(mDpi); |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 73 | mHistoryEvaluator = new HistoryEvaluator(); |
| 74 | |
Blazej Magnowski | a28de57 | 2015-09-25 16:41:27 -0700 | [diff] [blame] | 75 | mStrokeClassifiers.add(new AnglesClassifier(mClassifierData)); |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 76 | mStrokeClassifiers.add(new SpeedClassifier(mClassifierData)); |
| 77 | mStrokeClassifiers.add(new DurationCountClassifier(mClassifierData)); |
| 78 | mStrokeClassifiers.add(new EndPointRatioClassifier(mClassifierData)); |
| 79 | mStrokeClassifiers.add(new EndPointLengthClassifier(mClassifierData)); |
| 80 | mStrokeClassifiers.add(new AccelerationClassifier(mClassifierData)); |
Blazej Magnowski | a28de57 | 2015-09-25 16:41:27 -0700 | [diff] [blame] | 81 | mStrokeClassifiers.add(new SpeedAnglesClassifier(mClassifierData)); |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 82 | mStrokeClassifiers.add(new LengthCountClassifier(mClassifierData)); |
Blazej Magnowski | 4498d9c | 2015-09-28 14:00:11 -0700 | [diff] [blame] | 83 | mStrokeClassifiers.add(new DirectionClassifier(mClassifierData)); |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 84 | |
| 85 | mGestureClassifiers.add(new PointerCountClassifier(mClassifierData)); |
| 86 | mGestureClassifiers.add(new ProximityClassifier(mClassifierData)); |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 87 | |
| 88 | mStrokeClassifiersSize = mStrokeClassifiers.size(); |
| 89 | mGestureClassifiersSize = mGestureClassifiers.size(); |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 90 | |
| 91 | mContext.getContentResolver().registerContentObserver( |
| 92 | Settings.Global.getUriFor(HIC_ENABLE), false, |
| 93 | mSettingsObserver, |
| 94 | UserHandle.USER_ALL); |
| 95 | |
| 96 | updateConfiguration(); |
| 97 | } |
| 98 | |
| 99 | public static HumanInteractionClassifier getInstance(Context context) { |
| 100 | if (sInstance == null) { |
| 101 | sInstance = new HumanInteractionClassifier(context); |
| 102 | } |
| 103 | return sInstance; |
| 104 | } |
| 105 | |
| 106 | private void updateConfiguration() { |
Adrian Roos | 5c42df1 | 2016-01-27 08:48:42 -0800 | [diff] [blame] | 107 | mEnableClassifier = 0 != Settings.Global.getInt( |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 108 | mContext.getContentResolver(), |
Adrian Roos | 5c42df1 | 2016-01-27 08:48:42 -0800 | [diff] [blame] | 109 | HIC_ENABLE, HIC_ENABLE_DEFAULT); |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 110 | } |
| 111 | |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 112 | public void setType(int type) { |
| 113 | mCurrentType = type; |
| 114 | } |
| 115 | |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 116 | @Override |
| 117 | public void onTouchEvent(MotionEvent event) { |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 118 | if (!mEnableClassifier) { |
| 119 | return; |
| 120 | } |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 121 | |
Adrian Roos | c5584ce | 2016-02-24 14:17:19 -0800 | [diff] [blame] | 122 | // If the user is dragging down the notification, they might want to drag it down |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 123 | // enough to see the content, read it for a while and then lift the finger to open |
| 124 | // the notification. This kind of motion scores very bad in the Classifier so the |
| 125 | // MotionEvents which are close to the current position of the finger are not |
| 126 | // sent to the classifiers until the finger moves far enough. When the finger if lifted |
| 127 | // up, the last MotionEvent which was far enough from the finger is set as the final |
| 128 | // MotionEvent and sent to the Classifiers. |
| 129 | if (mCurrentType == Classifier.NOTIFICATION_DRAG_DOWN) { |
| 130 | mBufferedEvents.add(MotionEvent.obtain(event)); |
| 131 | Point pointEnd = new Point(event.getX() / mDpi, event.getY() / mDpi); |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 132 | |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 133 | while (pointEnd.dist(new Point(mBufferedEvents.getFirst().getX() / mDpi, |
| 134 | mBufferedEvents.getFirst().getY() / mDpi)) > FINGER_DISTANCE) { |
| 135 | addTouchEvent(mBufferedEvents.getFirst()); |
| 136 | mBufferedEvents.remove(); |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | int action = event.getActionMasked(); |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 140 | if (action == MotionEvent.ACTION_UP) { |
| 141 | mBufferedEvents.getFirst().setAction(MotionEvent.ACTION_UP); |
| 142 | addTouchEvent(mBufferedEvents.getFirst()); |
| 143 | mBufferedEvents.clear(); |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 144 | } |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 145 | } else { |
| 146 | addTouchEvent(event); |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 147 | } |
| 148 | } |
| 149 | |
Blazej Magnowski | 91be2f8 | 2015-09-24 16:41:58 -0700 | [diff] [blame] | 150 | private void addTouchEvent(MotionEvent event) { |
| 151 | mClassifierData.update(event); |
| 152 | |
| 153 | for (int i = 0; i < mStrokeClassifiersSize; i++) { |
| 154 | mStrokeClassifiers.get(i).onTouchEvent(event); |
| 155 | } |
| 156 | |
| 157 | for (int i = 0; i < mGestureClassifiersSize; i++) { |
| 158 | mGestureClassifiers.get(i).onTouchEvent(event); |
| 159 | } |
| 160 | |
| 161 | int size = mClassifierData.getEndingStrokes().size(); |
| 162 | for (int i = 0; i < size; i++) { |
| 163 | Stroke stroke = mClassifierData.getEndingStrokes().get(i); |
| 164 | float evaluation = 0.0f; |
| 165 | for (int j = 0; j < mStrokeClassifiersSize; j++) { |
| 166 | evaluation += mStrokeClassifiers.get(j).getFalseTouchEvaluation( |
| 167 | mCurrentType, stroke); |
| 168 | } |
| 169 | mHistoryEvaluator.addStroke(evaluation); |
| 170 | } |
| 171 | |
| 172 | int action = event.getActionMasked(); |
| 173 | if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) { |
| 174 | float evaluation = 0.0f; |
| 175 | for (int i = 0; i < mGestureClassifiersSize; i++) { |
| 176 | evaluation += mGestureClassifiers.get(i).getFalseTouchEvaluation(mCurrentType); |
| 177 | } |
| 178 | mHistoryEvaluator.addGesture(evaluation); |
| 179 | setType(Classifier.GENERIC); |
| 180 | } |
| 181 | |
| 182 | mClassifierData.cleanUp(event); |
| 183 | } |
| 184 | |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 185 | @Override |
| 186 | public void onSensorChanged(SensorEvent event) { |
Blazej Magnowski | 68d0c9b | 2015-09-18 17:25:55 -0700 | [diff] [blame] | 187 | for (int i = 0; i < mStrokeClassifiers.size(); i++) { |
| 188 | mStrokeClassifiers.get(i).onSensorChanged(event); |
| 189 | } |
| 190 | |
| 191 | for (int i = 0; i < mGestureClassifiers.size(); i++) { |
| 192 | mGestureClassifiers.get(i).onSensorChanged(event); |
| 193 | } |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 194 | } |
| 195 | |
Blazej Magnowski | 9f01c5b | 2015-09-17 15:14:29 -0700 | [diff] [blame] | 196 | public boolean isFalseTouch() { |
Blazej Magnowski | 6dc59b4 | 2015-09-22 15:14:20 -0700 | [diff] [blame] | 197 | if (mEnableClassifier) { |
| 198 | return mHistoryEvaluator.getEvaluation() >= 5.0f; |
| 199 | } |
| 200 | return false; |
Blazej Magnowski | 0e2ffbd | 2015-09-10 14:37:17 -0700 | [diff] [blame] | 201 | } |
| 202 | |
| 203 | public boolean isEnabled() { |
| 204 | return mEnableClassifier; |
| 205 | } |
| 206 | } |