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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 in the LICENSE file that
* accompanied this code).
*
* 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.
*
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*/
package java.awt;
import java.awt.geom.Dimension2D;
import java.beans.Transient;
/**
* The {@code Dimension} class encapsulates the width and
* height of a component (in integer precision) in a single object.
* The class is
* associated with certain properties of components. Several methods
* defined by the {@code Component} class and the
* {@code LayoutManager} interface return a
* {@code Dimension} object.
* <p>
* Normally the values of {@code width}
* and {@code height} are non-negative integers.
* The constructors that allow you to create a dimension do
* not prevent you from setting a negative value for these properties.
* If the value of {@code width} or {@code height} is
* negative, the behavior of some methods defined by other objects is
* undefined.
*
* @author Sami Shaio
* @author Arthur van Hoff
* @see java.awt.Component
* @see java.awt.LayoutManager
* @since 1.0
*/
public class Dimension extends Dimension2D implements java.io.Serializable {
/**
* The width dimension; negative values can be used.
*
* @serial
* @see #getSize
* @see #setSize
* @since 1.0
*/
public int width;
/**
* The height dimension; negative values can be used.
*
* @serial
* @see #getSize
* @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} with a width
* of zero and a height of zero.
*/
public Dimension() {
this(0, 0);
}
/**
* Creates an instance of {@code Dimension} whose width
* and height are the same as for the specified dimension.
*
* @param d the specified dimension for the
* {@code width} and
* {@code height} values
*/
public Dimension(Dimension d) {
this(d.width, d.height);
}
/**
* Constructs a {@code Dimension} 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} object to
* the specified width and height in double precision.
* Note that if {@code width} or {@code height}
* are larger than {@code Integer.MAX_VALUE}, they will
* be reset to {@code Integer.MAX_VALUE}.
*
* @param width the new width for the {@code Dimension} object
* @param height the new height for the {@code Dimension} 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} object.
* This method is included for completeness, to parallel the
* {@code getSize} method defined by {@code Component}.
*
* @return the size of this dimension, a new instance of
* {@code Dimension} 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} object to the specified size.
* This method is included for completeness, to parallel the
* {@code setSize} method defined by {@code Component}.
* @param d the new size for this {@code Dimension} 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} object
* to the specified width and height.
* This method is included for completeness, to parallel the
* {@code setSize} method defined by {@code Component}.
*
* @param width the new width for this {@code Dimension} object
* @param height the new height for this {@code Dimension} 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}.
*
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