Insets.java

/*
 * @(#)Insets.java	1.22 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation. 
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt). 
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA 
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 *
 */

package java.awt;

/**
 * An <code>Insets</code> object is a representation of the borders 
 * of a container. It specifies the space that a container must leave 
 * at each of its edges. The space can be a border, a blank space, or 
 * a title. 
 *
 * @version 	1.18, 08/19/02
 * @author 	Arthur van Hoff
 * @author 	Sami Shaio
 * @see         java.awt.LayoutManager
 * @see         java.awt.Container
 * @since       JDK1.0
 */
public class Insets implements Cloneable, java.io.Serializable {
    /**
     * The inset from the top.
     * @since JDK1.0
     */
    public int top;
    /**
     * The inset from the left.
     * @since JDK1.0
     */
    public int left;
    /**
     * The inset from the bottom.
     * @since JDK1.0
     */
    public int bottom;
    /**
     * The inset from the right.
     * @since JDK1.0
     */
    public int right;
    /*
     * JDK 1.1 serialVersionUID 
     */
    private static final long serialVersionUID = -2272572637695466749L;
    /**
     * Creates and initializes a new <code>Insets</code> object with the 
     * specified top, left, bottom, and right insets. 
     * @param       top   the inset from the top.
     * @param       left   the inset from the left.
     * @param       bottom   the inset from the bottom.
     * @param       right   the inset from the right.
     * @since       JDK1.0
     */
    public Insets(int top, int left, int bottom, int right) {
        this.top = top;
        this.left = left;
        this.bottom = bottom;
        this.right = right;
    }

    /**
     * Checks whether two insets objects are equal. Two instances 
     * of <code>Insets</code> are equal if the four integer values
     * of the fields <code>top</code>, <code>left</code>, 
     * <code>bottom</code>, and <code>right</code> are all equal.
     * @return      <code>true</code> if the two insets are equal;
     *                          otherwise <code>false</code>.
     * @since       JDK1.1
     */
    public boolean equals(Object obj) {
        if (obj instanceof Insets) {
            Insets insets = (Insets) obj;
            return ((top == insets.top) && (left == insets.left) &&
                    (bottom == insets.bottom) && (right == insets.right));
        }
        return false;
    }

    /**
     * Returns a <code>String</code> object representing this 
     * <code>Insets</code> object's values.
     * @return    a string representation of this <code>Insets</code> object, 
     *                           including the values of its member fields.
     * @since     JDK1.0
     */
    public String toString() {
        return getClass().getName() + "[top=" + top + ",left=" + left + ",bottom=" + bottom + ",right=" + right + "]";
    }

    /**
     * Create a copy of this object.
     * @return     a copy of this <code>Insets</code> object.
     * @since      JDK1.0
     */
    public Object clone() { 
        try { 
            return super.clone();
        } catch (CloneNotSupportedException e) { 
            // this shouldn't happen, since we are Cloneable
            throw new InternalError();
        }
    }
}