diff options
Diffstat (limited to 'java/com/android/incallui/answer/impl/classifier/Stroke.java')
-rw-r--r-- | java/com/android/incallui/answer/impl/classifier/Stroke.java | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/java/com/android/incallui/answer/impl/classifier/Stroke.java b/java/com/android/incallui/answer/impl/classifier/Stroke.java new file mode 100644 index 000000000..c542d0f7c --- /dev/null +++ b/java/com/android/incallui/answer/impl/classifier/Stroke.java @@ -0,0 +1,72 @@ +/* + * Copyright (C) 2016 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.incallui.answer.impl.classifier; + +import java.util.ArrayList; + +/** + * Contains data about a stroke (a single trace, all the events from a given id from the + * DOWN/POINTER_DOWN event till the UP/POINTER_UP/CANCEL event.) + */ +class Stroke { + + private static final float NANOS_TO_SECONDS = 1e9f; + + private ArrayList<Point> mPoints = new ArrayList<>(); + private long mStartTimeNano; + private long mEndTimeNano; + private float mLength; + private final float mDpi; + + public Stroke(long eventTimeNano, float dpi) { + mDpi = dpi; + mStartTimeNano = mEndTimeNano = eventTimeNano; + } + + public void addPoint(float x, float y, long eventTimeNano) { + mEndTimeNano = eventTimeNano; + Point point = new Point(x / mDpi, y / mDpi, eventTimeNano - mStartTimeNano); + if (!mPoints.isEmpty()) { + mLength += mPoints.get(mPoints.size() - 1).dist(point); + } + mPoints.add(point); + } + + public int getCount() { + return mPoints.size(); + } + + public float getTotalLength() { + return mLength; + } + + public float getEndPointLength() { + return mPoints.get(0).dist(mPoints.get(mPoints.size() - 1)); + } + + public long getDurationNanos() { + return mEndTimeNano - mStartTimeNano; + } + + public float getDurationSeconds() { + return (float) getDurationNanos() / NANOS_TO_SECONDS; + } + + public ArrayList<Point> getPoints() { + return mPoints; + } +} |