1/*
2 * Copyright (C) 2007 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
17package android.graphics;
18
19import android.os.Parcel;
20import android.os.Parcelable;
21
22
23/**
24 * Point holds two integer coordinates
25 */
26public class Point implements Parcelable {
27    public int x;
28    public int y;
29
30    public Point() {}
31
32    public Point(int x, int y) {
33        this.x = x;
34        this.y = y;
35    }
36
37    public Point(Point src) {
38        this.x = src.x;
39        this.y = src.y;
40    }
41
42    /**
43     * Set the point's x and y coordinates
44     */
45    public void set(int x, int y) {
46        this.x = x;
47        this.y = y;
48    }
49
50    /**
51     * Negate the point's coordinates
52     */
53    public final void negate() {
54        x = -x;
55        y = -y;
56    }
57
58    /**
59     * Offset the point's coordinates by dx, dy
60     */
61    public final void offset(int dx, int dy) {
62        x += dx;
63        y += dy;
64    }
65
66    /**
67     * Returns true if the point's coordinates equal (x,y)
68     */
69    public final boolean equals(int x, int y) {
70        return this.x == x && this.y == y;
71    }
72
73    @Override
74    public boolean equals(Object o) {
75        if (this == o) return true;
76        if (o == null || getClass() != o.getClass()) return false;
77
78        Point point = (Point) o;
79
80        if (x != point.x) return false;
81        if (y != point.y) return false;
82
83        return true;
84    }
85
86    @Override
87    public int hashCode() {
88        int result = x;
89        result = 31 * result + y;
90        return result;
91    }
92
93    @Override
94    public String toString() {
95        return "Point(" + x + ", " + y + ")";
96    }
97
98    /**
99     * Parcelable interface methods
100     */
101    @Override
102    public int describeContents() {
103        return 0;
104    }
105
106    /**
107     * Write this point to the specified parcel. To restore a point from
108     * a parcel, use readFromParcel()
109     * @param out The parcel to write the point's coordinates into
110     */
111    @Override
112    public void writeToParcel(Parcel out, int flags) {
113        out.writeInt(x);
114        out.writeInt(y);
115    }
116
117    public static final Parcelable.Creator<Point> CREATOR = new Parcelable.Creator<Point>() {
118        /**
119         * Return a new point from the data in the specified parcel.
120         */
121        public Point createFromParcel(Parcel in) {
122            Point r = new Point();
123            r.readFromParcel(in);
124            return r;
125        }
126
127        /**
128         * Return an array of rectangles of the specified size.
129         */
130        public Point[] newArray(int size) {
131            return new Point[size];
132        }
133    };
134
135    /**
136     * Set the point's coordinates from the data stored in the specified
137     * parcel. To write a point to a parcel, call writeToParcel().
138     *
139     * @param in The parcel to read the point's coordinates from
140     */
141    public void readFromParcel(Parcel in) {
142        x = in.readInt();
143        y = in.readInt();
144    }
145}
146