1 /*
2 * Licensed to The Apereo Foundation under one or more contributor license
3 * agreements. See the NOTICE file distributed with this work for additional
4 * information regarding copyright ownership.
5 *
6 *
7 * The Apereo Foundation licenses this file to you under the Educational
8 * Community License, Version 2.0 (the "License"); you may not use this file
9 * except in compliance with the License. You may obtain a copy of the License
10 * at:
11 *
12 * http://opensource.org/licenses/ecl2.txt
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
16 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
17 * License for the specific language governing permissions and limitations under
18 * the License.
19 *
20 */
21
22 package org.opencastproject.composer.layout;
23
24 import static java.lang.String.format;
25 import static org.opencastproject.util.EqualsUtil.hash;
26
27 import org.opencastproject.util.RequireUtil;
28
29 /** Anchor point of a rectangular shape, expressed relatively to its width and height. */
30 public final class Anchor {
31 private final double left;
32 private final double top;
33
34 /**
35 * Create a new anchor point.
36 *
37 * @param left
38 * width ratio measured from the left. 0 <= left <= 1
39 * @param top
40 * height ratio measured from the top. 0 <= top <= 1
41 */
42 public Anchor(double left, double top) {
43 this.left = RequireUtil.between(left, 0.0, 1.0);
44 this.top = RequireUtil.between(top, 0.0, 1.0);
45 }
46
47 public double getLeft() {
48 return left;
49 }
50
51 public double getTop() {
52 return top;
53 }
54
55 @Override
56 public boolean equals(Object that) {
57 return (this == that) || (that instanceof Anchor && eqFields((Anchor) that));
58 }
59
60 private boolean eqFields(Anchor that) {
61 return (left == that.left) && (top == that.top);
62 }
63
64 @Override
65 public int hashCode() {
66 return hash(left, top);
67 }
68
69 @Override
70 public String toString() {
71 return format("Anchor(%f,%f)", left, top);
72 }
73 }