1 /*
2  * Copyright (C) 2021 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.accessibility.floatingmenu;
18 
19 import android.annotation.FloatRange;
20 import android.annotation.NonNull;
21 import android.text.TextUtils;
22 
23 /**
24  * Stores information about the position, which includes percentage of X-axis of the screen,
25  * percentage of Y-axis of the screen.
26  */
27 public class Position {
28 
29     private static final char STRING_SEPARATOR = ',';
30     private static final TextUtils.SimpleStringSplitter sStringCommaSplitter =
31             new TextUtils.SimpleStringSplitter(STRING_SEPARATOR);
32 
33     private float mPercentageX;
34     private float mPercentageY;
35 
36     /**
37      * Creates a {@link Position} from a encoded string described in {@link #toString()}.
38      *
39      * @param positionString A string conform to the format described in {@link #toString()}
40      * @return A {@link Position} with the given value retrieved from {@code absolutePositionString}
41      * @throws IllegalArgumentException If {@code positionString} does not conform to the format
42      *                                  described in {@link #toString()}
43      */
fromString(String positionString)44     public static Position fromString(String positionString) {
45         sStringCommaSplitter.setString(positionString);
46         if (sStringCommaSplitter.hasNext()) {
47             final float percentageX = Float.parseFloat(sStringCommaSplitter.next());
48             final float percentageY = Float.parseFloat(sStringCommaSplitter.next());
49             return new Position(percentageX, percentageY);
50         }
51 
52         throw new IllegalArgumentException(
53                 "Invalid Position string: " + positionString);
54     }
55 
Position(float percentageX, float percentageY)56     Position(float percentageX, float percentageY) {
57         update(percentageX, percentageY);
58     }
59 
60     @Override
toString()61     public String toString() {
62         return mPercentageX + ", " + mPercentageY;
63     }
64 
65     /**
66      * Updates the position with {@code percentagePosition}.
67      */
update(@onNull Position percentagePosition)68     public void update(@NonNull Position percentagePosition) {
69         update(percentagePosition.getPercentageX(), percentagePosition.getPercentageY());
70     }
71 
72     /**
73      * Updates the position with {@code percentageX} and {@code percentageY}.
74      *
75      * @param percentageX the new percentage of X-axis of the screen, from 0.0 to 1.0.
76      * @param percentageY the new percentage of Y-axis of the screen, from 0.0 to 1.0.
77      */
update(@loatRangefrom = 0.0, to = 1.0) float percentageX, @FloatRange(from = 0.0, to = 1.0) float percentageY)78     public void update(@FloatRange(from = 0.0, to = 1.0) float percentageX,
79             @FloatRange(from = 0.0, to = 1.0) float percentageY) {
80         mPercentageX = percentageX;
81         mPercentageY = percentageY;
82     }
83 
getPercentageX()84     public float getPercentageX() {
85         return mPercentageX;
86     }
87 
getPercentageY()88     public float getPercentageY() {
89         return mPercentageY;
90     }
91 }
92