Mercurial > projects > dwt-linux
annotate dwt/graphics/Point.d @ 10:63c023465156
moved from org.eclipse.swt to dwt
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sat, 05 Jan 2008 17:58:37 +0100 |
| parents | ad2b69216039 |
| children | 8cec8f536af3 |
| rev | line source |
|---|---|
| 4 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2005 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 *******************************************************************************/ | |
|
10
63c023465156
moved from org.eclipse.swt to dwt
Frank Benoit <benoit@tionex.de>
parents:
9
diff
changeset
|
11 module dwt.graphics.Point; |
| 4 | 12 |
| 13 | |
|
10
63c023465156
moved from org.eclipse.swt to dwt
Frank Benoit <benoit@tionex.de>
parents:
9
diff
changeset
|
14 public import dwt.internal.SerializableCompatibility; |
| 4 | 15 |
| 16 import tango.text.convert.Format; | |
| 17 | |
| 18 /** | |
| 19 * Instances of this class represent places on the (x, y) | |
| 20 * coordinate plane. | |
| 21 * <p> | |
| 22 * The coordinate space for rectangles and points is considered | |
| 23 * to have increasing values downward and to the right from its | |
| 24 * origin making this the normal, computer graphics oriented notion | |
| 25 * of (x, y) coordinates rather than the strict mathematical one. | |
| 26 * </p> | |
| 27 * <p> | |
| 28 * The hashCode() method in this class uses the values of the public | |
| 29 * fields to compute the hash value. When storing instances of the | |
| 30 * class in hashed collections, do not modify these fields after the | |
| 31 * object has been inserted. | |
| 32 * </p> | |
| 33 * <p> | |
| 34 * Application code does <em>not</em> need to explicitly release the | |
| 35 * resources managed by each instance when those instances are no longer | |
| 36 * required, and thus no <code>dispose()</code> method is provided. | |
| 37 * </p> | |
| 38 * | |
| 39 * @see Rectangle | |
| 40 */ | |
| 41 | |
| 42 public final class Point : SerializableCompatibility { | |
| 43 | |
| 44 /** | |
| 45 * the x coordinate of the point | |
| 46 */ | |
| 47 public int x; | |
| 48 | |
| 49 /** | |
| 50 * the y coordinate of the point | |
| 51 */ | |
| 52 public int y; | |
| 53 | |
| 54 //static final long serialVersionUID = 3257002163938146354L; | |
| 55 | |
| 56 /** | |
| 57 * Constructs a new point with the given x and y coordinates. | |
| 58 * | |
| 59 * @param x the x coordinate of the new point | |
| 60 * @param y the y coordinate of the new point | |
| 61 */ | |
| 62 public this (int x, int y) { | |
| 63 this.x = x; | |
| 64 this.y = y; | |
| 65 } | |
| 66 | |
| 67 /** | |
| 68 * Compares the argument to the receiver, and returns true | |
| 69 * if they represent the <em>same</em> object using a class | |
| 70 * specific comparison. | |
| 71 * | |
| 72 * @param object the object to compare with this object | |
| 73 * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise | |
| 74 * | |
| 75 * @see #hashCode() | |
| 76 */ | |
| 77 public override int opEquals (Object object) { | |
| 78 if (object is this) return true; | |
| 79 if ( auto p = cast(Point)object ){ | |
| 80 return (p.x == this.x) && (p.y == this.y); | |
| 81 } | |
| 82 return false; | |
| 83 } | |
| 84 | |
| 85 /** | |
| 86 * Returns an integer hash code for the receiver. Any two | |
| 87 * objects that return <code>true</code> when passed to | |
| 88 * <code>equals</code> must return the same value for this | |
| 89 * method. | |
| 90 * | |
| 91 * @return the receiver's hash | |
| 92 * | |
| 93 * @see #equals(Object) | |
| 94 */ | |
| 95 public hash_t toHash () { | |
| 96 return x ^ y; | |
| 97 } | |
| 98 | |
| 99 /** | |
| 100 * Returns a string containing a concise, human-readable | |
| 101 * description of the receiver. | |
| 102 * | |
| 103 * @return a string representation of the point | |
| 104 */ | |
| 105 public char[] toString () { | |
| 106 return Format( "Point {}, {}}", x, y );; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ | |
| 107 } | |
| 108 | |
| 109 } | |
| 110 |