Jason Gerecke | d6396d6 | 2014-01-27 18:30:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 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 android.hardware.input; |
| 18 | |
| 19 | import android.os.Parcel; |
| 20 | import android.os.Parcelable; |
| 21 | |
| 22 | /** |
| 23 | * Encapsulates calibration data for input devices. |
| 24 | * |
| 25 | * @hide |
| 26 | */ |
| 27 | public class TouchCalibration implements Parcelable { |
| 28 | |
| 29 | public static final TouchCalibration IDENTITY = new TouchCalibration(); |
| 30 | |
Jeff Sharkey | 9e8f83d | 2019-02-28 12:06:45 -0700 | [diff] [blame] | 31 | public static final @android.annotation.NonNull Parcelable.Creator<TouchCalibration> CREATOR |
Jason Gerecke | d6396d6 | 2014-01-27 18:30:37 -0800 | [diff] [blame] | 32 | = new Parcelable.Creator<TouchCalibration>() { |
| 33 | public TouchCalibration createFromParcel(Parcel in) { |
| 34 | return new TouchCalibration(in); |
| 35 | } |
| 36 | |
| 37 | public TouchCalibration[] newArray(int size) { |
| 38 | return new TouchCalibration[size]; |
| 39 | } |
| 40 | }; |
| 41 | |
| 42 | private final float mXScale, mXYMix, mXOffset; |
| 43 | private final float mYXMix, mYScale, mYOffset; |
| 44 | |
| 45 | /** |
| 46 | * Create a new TouchCalibration initialized to the identity transformation. |
| 47 | */ |
| 48 | public TouchCalibration() { |
| 49 | this(1,0,0,0,1,0); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Create a new TouchCalibration from affine transformation paramters. |
| 54 | * @param xScale Influence of input x-axis value on output x-axis value. |
| 55 | * @param xyMix Influence of input y-axis value on output x-axis value. |
| 56 | * @param xOffset Constant offset to be applied to output x-axis value. |
| 57 | * @param yXMix Influence of input x-axis value on output y-axis value. |
| 58 | * @param yScale Influence of input y-axis value on output y-axis value. |
| 59 | * @param yOffset Constant offset to be applied to output y-axis value. |
| 60 | */ |
| 61 | public TouchCalibration(float xScale, float xyMix, float xOffset, |
| 62 | float yxMix, float yScale, float yOffset) { |
| 63 | mXScale = xScale; |
| 64 | mXYMix = xyMix; |
| 65 | mXOffset = xOffset; |
| 66 | mYXMix = yxMix; |
| 67 | mYScale = yScale; |
| 68 | mYOffset = yOffset; |
| 69 | } |
| 70 | |
| 71 | public TouchCalibration(Parcel in) { |
| 72 | mXScale = in.readFloat(); |
| 73 | mXYMix = in.readFloat(); |
| 74 | mXOffset = in.readFloat(); |
| 75 | mYXMix = in.readFloat(); |
| 76 | mYScale = in.readFloat(); |
| 77 | mYOffset = in.readFloat(); |
| 78 | } |
| 79 | |
| 80 | @Override |
| 81 | public void writeToParcel(Parcel dest, int flags) { |
| 82 | dest.writeFloat(mXScale); |
| 83 | dest.writeFloat(mXYMix); |
| 84 | dest.writeFloat(mXOffset); |
| 85 | dest.writeFloat(mYXMix); |
| 86 | dest.writeFloat(mYScale); |
| 87 | dest.writeFloat(mYOffset); |
| 88 | } |
| 89 | |
| 90 | @Override |
| 91 | public int describeContents() { |
| 92 | return 0; |
| 93 | } |
| 94 | |
| 95 | public float[] getAffineTransform() { |
| 96 | return new float[] { mXScale, mXYMix, mXOffset, mYXMix, mYScale, mYOffset }; |
| 97 | } |
| 98 | |
| 99 | @Override |
| 100 | public boolean equals(Object obj) { |
| 101 | if (obj == this) { |
| 102 | return true; |
| 103 | } else if (obj instanceof TouchCalibration) { |
| 104 | TouchCalibration cal = (TouchCalibration)obj; |
| 105 | |
| 106 | return (cal.mXScale == mXScale) && |
| 107 | (cal.mXYMix == mXYMix) && |
| 108 | (cal.mXOffset == mXOffset) && |
| 109 | (cal.mYXMix == mYXMix) && |
| 110 | (cal.mYScale == mYScale) && |
| 111 | (cal.mYOffset == mYOffset); |
| 112 | } else { |
| 113 | return false; |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | @Override |
| 118 | public int hashCode() { |
| 119 | return Float.floatToIntBits(mXScale) ^ |
| 120 | Float.floatToIntBits(mXYMix) ^ |
| 121 | Float.floatToIntBits(mXOffset) ^ |
| 122 | Float.floatToIntBits(mYXMix) ^ |
| 123 | Float.floatToIntBits(mYScale) ^ |
| 124 | Float.floatToIntBits(mYOffset); |
| 125 | } |
Jason Gerecke | d6396d6 | 2014-01-27 18:30:37 -0800 | [diff] [blame] | 126 | } |