diff dwt/graphics/Point.d @ 0:380af2bdd8e5

Upload of whole dwt tree
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sat, 09 Aug 2008 17:00:02 +0200
parents
children ab8b5765e3d1
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/graphics/Point.d	Sat Aug 09 17:00:02 2008 +0200
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2005 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+module dwt.graphics.Point;
+
+import dwt.dwthelper.utils;
+
+import dwt.internal.SerializableCompatibility;
+
+/**
+ * Instances of this class represent places on the (x, y)
+ * coordinate plane.
+ * <p>
+ * The coordinate space for rectangles and points is considered
+ * to have increasing values downward and to the right from its
+ * origin making this the normal, computer graphics oriented notion
+ * of (x, y) coordinates rather than the strict mathematical one.
+ * </p>
+ * <p>
+ * The hashCode() method in this class uses the values of the public
+ * fields to compute the hash value. When storing instances of the
+ * class in hashed collections, do not modify these fields after the
+ * object has been inserted.  
+ * </p>
+ * <p>
+ * Application code does <em>not</em> need to explicitly release the
+ * resources managed by each instance when those instances are no longer
+ * required, and thus no <code>dispose()</code> method is provided.
+ * </p>
+ *
+ * @see Rectangle
+ */
+
+public final class Point implements SerializableCompatibility {
+    
+    /**
+     * the x coordinate of the point
+     */
+    public int x;
+    
+    /**
+     * the y coordinate of the point
+     */
+    public int y;
+    
+    static final long serialVersionUID = 3257002163938146354L;
+    
+/**
+ * Constructs a new point with the given x and y coordinates.
+ *
+ * @param x the x coordinate of the new point
+ * @param y the y coordinate of the new point
+ */
+public Point (int x, int y) {
+    this.x = x;
+    this.y = y;
+}
+
+/**
+ * Compares the argument to the receiver, and returns true
+ * if they represent the <em>same</em> object using a class
+ * specific comparison.
+ *
+ * @param object the object to compare with this object
+ * @return <code>true</code> if the object is the same as this object and <code>false</code> otherwise
+ *
+ * @see #hashCode()
+ */
+public bool equals (Object object) {
+    if (object is this) return true;
+    if (!(object instanceof Point)) return false;
+    Point p = (Point)object;
+    return (p.x is this.x) && (p.y is this.y);
+}
+
+/**
+ * Returns an integer hash code for the receiver. Any two 
+ * objects that return <code>true</code> when passed to 
+ * <code>equals</code> must return the same value for this
+ * method.
+ *
+ * @return the receiver's hash
+ *
+ * @see #equals(Object)
+ */
+public int hashCode () {
+    return x ^ y;
+}
+
+/**
+ * Returns a string containing a concise, human-readable
+ * description of the receiver.
+ *
+ * @return a string representation of the point
+ */
+public String toString () {
+    return "Point {" + x + ", " + y + "}"; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
+}
+
+}
+