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jfreechart example source code file (Tick.java)

This example jfreechart source code file (Tick.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

cloneable, clonenotsupportedexception, illegalargumentexception, io, null, null, object, serializable, string, string, textanchor, textanchor, tick, tick

The jfreechart Tick.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Project Info:  http://www.jfree.org/jfreechart/index.html
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library 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 Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * ---------
 * Tick.java
 * ---------
 * (C) Copyright 2000-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   Nicolas Brodu;
 *
 * Changes
 * -------
 * 18-Sep-2001 : Added standard header and fixed DOS encoding problem (DG);
 * 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
 * 08-Nov-2002 : Moved to new package com.jrefinery.chart.axis (DG);
 * 26-Mar-2003 : Implemented Serializable (DG);
 * 12-Sep-2003 : Implemented Cloneable (NB);
 * 07-Nov-2003 : Added subclasses for particular types of ticks (DG);
 *
 */

package org.jfree.chart.axis;

import java.io.Serializable;

import org.jfree.ui.TextAnchor;
import org.jfree.util.ObjectUtilities;

/**
 * The base class used to represent labelled ticks along an axis.
 */
public abstract class Tick implements Serializable, Cloneable {

    /** For serialization. */
    private static final long serialVersionUID = 6668230383875149773L;

    /** A text version of the tick value. */
    private String text;

    /** The text anchor for the tick label. */
    private TextAnchor textAnchor;

    /** The rotation anchor for the tick label. */
    private TextAnchor rotationAnchor;

    /** The rotation angle. */
    private double angle;

    /**
     * Creates a new tick.
     *
     * @param text  the formatted version of the tick value.
     * @param textAnchor  the text anchor (<code>null not permitted).
     * @param rotationAnchor  the rotation anchor (<code>null not
     *                        permitted).
     * @param angle  the angle.
     */
    public Tick(String text, TextAnchor textAnchor, TextAnchor rotationAnchor,
                double angle) {
        if (textAnchor == null) {
            throw new IllegalArgumentException("Null 'textAnchor' argument.");
        }
        if (rotationAnchor == null) {
            throw new IllegalArgumentException(
                "Null 'rotationAnchor' argument."
            );
        }
        this.text = text;
        this.textAnchor = textAnchor;
        this.rotationAnchor = rotationAnchor;
        this.angle = angle;
    }

    /**
     * Returns the text version of the tick value.
     *
     * @return A string (possibly <code>null;
     */
    public String getText() {
        return this.text;
    }

    /**
     * Returns the text anchor.
     *
     * @return The text anchor (never <code>null).
     */
    public TextAnchor getTextAnchor() {
        return this.textAnchor;
    }

    /**
     * Returns the text anchor that defines the point around which the label is
     * rotated.
     *
     * @return A text anchor (never <code>null).
     */
    public TextAnchor getRotationAnchor() {
        return this.rotationAnchor;
    }

    /**
     * Returns the angle.
     *
     * @return The angle.
     */
    public double getAngle() {
        return this.angle;
    }

    /**
     * Tests this tick for equality with an arbitrary object.
     *
     * @param obj  the object (<code>null permitted).
     *
     * @return A boolean.
     */
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj instanceof Tick) {
            Tick t = (Tick) obj;
            if (!ObjectUtilities.equal(this.text, t.text)) {
                return false;
            }
            if (!ObjectUtilities.equal(this.textAnchor, t.textAnchor)) {
                return false;
            }
            if (!ObjectUtilities.equal(this.rotationAnchor, t.rotationAnchor)) {
                return false;
            }
            if (!(this.angle == t.angle)) {
                return false;
            }
            return true;
        }
        return false;
    }

    /**
     * Returns a clone of the tick.
     *
     * @return A clone.
     *
     * @throws CloneNotSupportedException if there is a problem cloning.
     */
    public Object clone() throws CloneNotSupportedException {
        Tick clone = (Tick) super.clone();
        return clone;
    }

    /**
     * Returns a string representation of the tick.
     *
     * @return A string.
     */
    public String toString() {
        return this.text;
    }
}

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