286N/A/*
286N/A * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
286N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
286N/A *
286N/A * This code is free software; you can redistribute it and/or modify it
286N/A * under the terms of the GNU General Public License version 2 only, as
286N/A * published by the Free Software Foundation. Oracle designates this
286N/A * particular file as subject to the "Classpath" exception as provided
286N/A * by Oracle in the LICENSE file that accompanied this code.
286N/A *
286N/A * This code is distributed in the hope that it will be useful, but WITHOUT
286N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
286N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
286N/A * version 2 for more details (a copy is included in the LICENSE file that
286N/A * accompanied this code).
286N/A *
286N/A * You should have received a copy of the GNU General Public License version
286N/A * 2 along with this work; if not, write to the Free Software Foundation,
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286N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
286N/A * or visit www.oracle.com if you need additional information or have any
286N/A * questions.
286N/A */
286N/A
286N/Apackage java.awt;
286N/A
286N/Aimport java.awt.geom.Dimension2D;
286N/Aimport java.beans.Transient;
286N/A
286N/A/**
286N/A * The <code>Dimension</code> class encapsulates the width and
286N/A * height of a component (in integer precision) in a single object.
286N/A * The class is
286N/A * associated with certain properties of components. Several methods
286N/A * defined by the <code>Component</code> class and the
286N/A * <code>LayoutManager</code> interface return a
286N/A * <code>Dimension</code> object.
286N/A * <p>
286N/A * Normally the values of <code>width</code>
286N/A * and <code>height</code> are non-negative integers.
286N/A * The constructors that allow you to create a dimension do
286N/A * not prevent you from setting a negative value for these properties.
286N/A * If the value of <code>width</code> or <code>height</code> is
286N/A * negative, the behavior of some methods defined by other objects is
286N/A * undefined.
286N/A *
286N/A * @author Sami Shaio
286N/A * @author Arthur van Hoff
286N/A * @see java.awt.Component
286N/A * @see java.awt.LayoutManager
286N/A * @since 1.0
286N/A */
286N/Apublic class Dimension extends Dimension2D implements java.io.Serializable {
286N/A
286N/A /**
286N/A * The width dimension; negative values can be used.
286N/A *
286N/A * @serial
286N/A * @see #getSize
286N/A * @see #setSize
286N/A * @since 1.0
286N/A */
286N/A public int width;
286N/A
286N/A /**
286N/A * The height dimension; negative values can be used.
286N/A *
286N/A * @serial
286N/A * @see #getSize
286N/A * @see #setSize
* @since 1.0
*/
public int height;
/*
* JDK 1.1 serialVersionUID
*/
private static final long serialVersionUID = 4723952579491349524L;
/**
* Initialize JNI field and method IDs
*/
private static native void initIDs();
static {
/* ensure that the necessary native libraries are loaded */
Toolkit.loadLibraries();
if (!GraphicsEnvironment.isHeadless()) {
initIDs();
}
}
/**
* Creates an instance of <code>Dimension</code> with a width
* of zero and a height of zero.
*/
public Dimension() {
this(0, 0);
}
/**
* Creates an instance of <code>Dimension</code> whose width
* and height are the same as for the specified dimension.
*
* @param d the specified dimension for the
* <code>width</code> and
* <code>height</code> values
*/
public Dimension(Dimension d) {
this(d.width, d.height);
}
/**
* Constructs a <code>Dimension</code> and initializes
* it to the specified width and specified height.
*
* @param width the specified width
* @param height the specified height
*/
public Dimension(int width, int height) {
this.width = width;
this.height = height;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getWidth() {
return width;
}
/**
* {@inheritDoc}
* @since 1.2
*/
public double getHeight() {
return height;
}
/**
* Sets the size of this <code>Dimension</code> object to
* the specified width and height in double precision.
* Note that if <code>width</code> or <code>height</code>
* are larger than <code>Integer.MAX_VALUE</code>, they will
* be reset to <code>Integer.MAX_VALUE</code>.
*
* @param width the new width for the <code>Dimension</code> object
* @param height the new height for the <code>Dimension</code> object
* @since 1.2
*/
public void setSize(double width, double height) {
this.width = (int) Math.ceil(width);
this.height = (int) Math.ceil(height);
}
/**
* Gets the size of this <code>Dimension</code> object.
* This method is included for completeness, to parallel the
* <code>getSize</code> method defined by <code>Component</code>.
*
* @return the size of this dimension, a new instance of
* <code>Dimension</code> with the same width and height
* @see java.awt.Dimension#setSize
* @see java.awt.Component#getSize
* @since 1.1
*/
@Transient
public Dimension getSize() {
return new Dimension(width, height);
}
/**
* Sets the size of this <code>Dimension</code> object to the specified size.
* This method is included for completeness, to parallel the
* <code>setSize</code> method defined by <code>Component</code>.
* @param d the new size for this <code>Dimension</code> object
* @see java.awt.Dimension#getSize
* @see java.awt.Component#setSize
* @since 1.1
*/
public void setSize(Dimension d) {
setSize(d.width, d.height);
}
/**
* Sets the size of this <code>Dimension</code> object
* to the specified width and height.
* This method is included for completeness, to parallel the
* <code>setSize</code> method defined by <code>Component</code>.
*
* @param width the new width for this <code>Dimension</code> object
* @param height the new height for this <code>Dimension</code> object
* @see java.awt.Dimension#getSize
* @see java.awt.Component#setSize
* @since 1.1
*/
public void setSize(int width, int height) {
this.width = width;
this.height = height;
}
/**
* Checks whether two dimension objects have equal values.
*/
public boolean equals(Object obj) {
if (obj instanceof Dimension) {
Dimension d = (Dimension)obj;
return (width == d.width) && (height == d.height);
}
return false;
}
/**
* Returns the hash code for this <code>Dimension</code>.
*
* @return a hash code for this <code>Dimension</code>
*/
public int hashCode() {
int sum = width + height;
return sum * (sum + 1)/2 + width;
}
/**
* Returns a string representation of the values of this
* <code>Dimension</code> object's <code>height</code> and
* <code>width</code> fields. This method is intended to be used only
* for debugging purposes, and the content and format of the returned
* string may vary between implementations. The returned string may be
* empty but may not be <code>null</code>.
*
* @return a string representation of this <code>Dimension</code>
* object
*/
public String toString() {
return getClass().getName() + "[width=" + width + ",height=" + height + "]";
}
}