Dimension.java   [plain text]

/* Copyright (C) 1999, 2000, 2002  Free Software Foundation

This file is part of GNU Classpath.

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permission to link this library with independent modules to produce an
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package java.awt;

/* Written using "Java Class Libraries", 2nd edition, plus online
 * API docs for JDK 1.2 beta from http://www.javasoft.com.
 * Status:  Believed complete and correct, except that neither toString
 * has not been compared with JDK output.
 */

/**
  * This class holds a width and height value pair.
  *
  * @author Per Bothner <bothner@cygnus.com>
  * @author Aaron M. Renn (arenn@urbanophile.com)
  * @date Fenruary 8, 1999.
  */
public class Dimension extends java.awt.geom.Dimension2D
  implements java.io.Serializable
{
  /**
   * This width of this object.
   */
  public int width;

  /**
   * The height of this object.
   */
  public int height;

  /**
   * Initializes a new instance of <code>Dimension</code> with a width
   * and height of zero.
   */
  public Dimension () { }

  /**
   * Initializes a new instance of <code>Dimension</code> to have a width
   * and height identical to that of the specified dimension object.
   *
   * @param dim The <code>Dimension</code> to take the width and height from.
   */
  public Dimension (Dimension dim)
  {
    this.width = dim.width;
    this.height = dim.height;
  }

  /**
   * Initializes a new instance of <code>Dimension</code> with the
   * specified width and height.
   *
   * @param width The width of this object.
   * @param height The height of this object.
   */
  public Dimension (int width, int height)
  {
    this.width = width;
    this.height = height;
  }

  /**
   * Tests this object for equality against the specified object.  This will
   * be true if and only if the specified object:
   * <p>
   * <ul>
   * <li>Is not <code>null</code>.
   * <li>Is an instance of <code>Dimension</code>.
   * <li>Has width and height values identical to this object.
   * </ul>
   *
   * @param obj The object to test against.
   *
   * @return <code>true</code> if the specified object is equal to this
   * object, <code>false</code> otherwise.
   */
  public boolean equals (Object obj)
  {
    if (! (obj instanceof Dimension))
      return false;
    Dimension dim = (Dimension) obj;
    return height == dim.height && width == dim.width;
  }

  /**
   * Returns the size of this object.  Not very useful.
   *
   * @return This object.
   */
  public Dimension getSize () { return new Dimension(this); }

  /**
   * Sets the width and height of this object to match that of the
   * specified object.
   *
   * @param dim The <code>Dimension</code> object to get the new width and
   * height from.
   */
  public void setSize (Dimension dim)
  {
    this.width = dim.width;
    this.height = dim.height;
  }

  /**
   * Sets the width and height of this object to the specified values.
   *
   * @param width The new width value.
   * @param height The new height value.
   */
  public void setSize (int width, int height)
  {
    this.width = width;
    this.height = height;
  }

  /**
   * Returns a string representation of this object.
   *
   * @return A string representation of this object.
   */
  public String toString ()
  {
    return "Dimension[w:"+width+",h:"+height+']';
  }

  /* Note:  There is no Dimension.hashCode. */

  public double getWidth() { return width; }
  public double getHeight() { return height; }

  public void setSize (double width, double height)
  {
    this.width = (int) width;
    this.height = (int) height;
  }
}