Dimension.java

/*
 * Copyright 2012 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.zxing;

/**
 * Simply encapsulates a width and height.
 */
public final class Dimension {

	private final int width;
	private final int height;

	public Dimension(int width, int height) {
		if (width < 0 || height < 0) {
			throw new IllegalArgumentException();
		}
		this.width = width;
		this.height = height;
	}

	public int getWidth() {
		return width;
	}

	public int getHeight() {
		return height;
	}

	@Override
	public boolean equals(Object other) {
		if (other instanceof Dimension) {
			Dimension d = (Dimension) other;
			return width == d.width && height == d.height;
		}
		return false;
	}

	@Override
	public int hashCode() {
		return width * 32713 + height;
	}

	@Override
	public String toString() {
		return width + "x" + height;
	}

}