| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License |
| */ |
| |
| package com.android.systemui.classifier; |
| |
| import android.util.SparseArray; |
| import android.view.MotionEvent; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Contains data which is used to classify interaction sequences on the lockscreen. It does, for |
| * example, provide information on the current touch state. |
| */ |
| public class ClassifierData { |
| private SparseArray<Stroke> mCurrentStrokes = new SparseArray<>(); |
| private ArrayList<Stroke> mEndingStrokes = new ArrayList<>(); |
| private final float mDpi; |
| |
| public ClassifierData(float dpi) { |
| mDpi = dpi; |
| } |
| |
| public void update(MotionEvent event) { |
| mEndingStrokes.clear(); |
| int action = event.getActionMasked(); |
| if (action == MotionEvent.ACTION_DOWN) { |
| mCurrentStrokes.clear(); |
| } |
| |
| for (int i = 0; i < event.getPointerCount(); i++) { |
| int id = event.getPointerId(i); |
| if (mCurrentStrokes.get(id) == null) { |
| mCurrentStrokes.put(id, new Stroke(event.getEventTimeNano(), mDpi)); |
| } |
| mCurrentStrokes.get(id).addPoint(event.getX(i), event.getY(i), |
| event.getEventTimeNano()); |
| |
| if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL |
| || (action == MotionEvent.ACTION_POINTER_UP && i == event.getActionIndex())) { |
| mEndingStrokes.add(getStroke(id)); |
| } |
| } |
| } |
| |
| public void cleanUp(MotionEvent event) { |
| mEndingStrokes.clear(); |
| int action = event.getActionMasked(); |
| for (int i = 0; i < event.getPointerCount(); i++) { |
| int id = event.getPointerId(i); |
| if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL |
| || (action == MotionEvent.ACTION_POINTER_UP && i == event.getActionIndex())) { |
| mCurrentStrokes.remove(id); |
| } |
| } |
| } |
| |
| /** |
| * @return the list of Strokes which are ending in the recently added MotionEvent |
| */ |
| public ArrayList<Stroke> getEndingStrokes() { |
| return mEndingStrokes; |
| } |
| |
| /** |
| * @param id the id from MotionEvent |
| * @return the Stroke assigned to the id |
| */ |
| public Stroke getStroke(int id) { |
| return mCurrentStrokes.get(id); |
| } |
| } |