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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2008 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.swt.graphics.Point;
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14
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15 import java.lang.all;
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16
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17
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18 public import org.eclipse.swt.internal.SerializableCompatibility;
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19
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20
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21 /**
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22 * Instances of this class represent places on the (x, y)
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23 * coordinate plane.
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24 * <p>
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25 * The coordinate space for rectangles and points is considered
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26 * to have increasing values downward and to the right from its
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27 * origin making this the normal, computer graphics oriented notion
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28 * of (x, y) coordinates rather than the strict mathematical one.
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29 * </p>
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30 * <p>
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31 * The hashCode() method in this class uses the values of the public
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32 * fields to compute the hash value. When storing instances of the
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33 * class in hashed collections, do not modify these fields after the
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34 * object has been inserted.
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35 * </p>
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36 * <p>
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37 * Application code does <em>not</em> need to explicitly release the
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38 * resources managed by each instance when those instances are no longer
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39 * required, and thus no <code>dispose()</code> method is provided.
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40 * </p>
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41 *
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42 * @see Rectangle
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43 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
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44 */
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45
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46 public final class Point : SerializableCompatibility {
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47
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48 /**
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49 * the x coordinate of the point
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50 */
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51 public int x;
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52
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53 /**
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54 * the y coordinate of the point
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55 */
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56 public int y;
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57
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58 //static final long serialVersionUID = 3257002163938146354L;
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59
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60 /**
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61 * Constructs a new point with the given x and y coordinates.
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62 *
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63 * @param x the x coordinate of the new point
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64 * @param y the y coordinate of the new point
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65 */
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66 public this (int x, int y) {
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67 this.x = x;
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68 this.y = y;
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69 }
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70
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71 /**
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72 * Compares the argument to the receiver, and returns true
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73 * if they represent the <em>same</em> object using a class
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74 * specific comparison.
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75 *
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76 * @param object the object to compare with this object
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77 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
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78 *
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79 * @see #hashCode()
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80 */
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81 public override equals_t opEquals (Object object) {
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82 if (object is this) return true;
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83 if ( auto p = cast(Point)object ){
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84 return (p.x is this.x) && (p.y is this.y);
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85 }
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86 return false;
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87 }
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88
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89 /**
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90 * Returns an integer hash code for the receiver. Any two
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91 * objects that return <code>true</code> when passed to
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92 * <code>equals</code> must return the same value for this
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93 * method.
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94 *
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95 * @return the receiver's hash
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96 *
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97 * @see #equals(Object)
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98 */
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99 override public hash_t toHash () {
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100 return x ^ y;
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101 }
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102
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103 /**
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104 * Returns a string containing a concise, human-readable
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105 * description of the receiver.
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106 *
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107 * @return a string representation of the point
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108 */
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109 override public String toString () {
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110 return Format( "Point {{{}, {}}", x, y );; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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111 }
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112
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113 }
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114
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