home | career | drupal | java | mac | mysql | perl | scala | uml | unix  

jfreechart example source code file (Timeline.java)

This example jfreechart source code file (Timeline.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

date, date, timeline, timeline, util

The jfreechart Timeline.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.]
 *
 * -------------
 * Timeline.java
 * -------------
 * (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
 *
 * Original Author:  Bill Kelemen;
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *
 * Changes
 * -------
 * 23-May-2003 : Version 1 (BK);
 * 09-Sep-2003 : Changed some method and parameter names (DG);
 * 02-Feb-2007 : Removed author tags all over JFreeChart sources (DG);
 *
 */

package org.jfree.chart.axis;

import java.util.Date;

/**
 * An interface that defines the contract for a Timeline.
 * <P>
 * A Timeline will present a series of values to be used for an axis. Each
 * Timeline must provide transformation methods between domain values and
 * timeline values. In theory many transformations are possible. This interface
 * has been implemented completely in
 * {@link org.jfree.chart.axis.SegmentedTimeline}.
 * <P>
 * A timeline can be used as parameter to a
 * {@link org.jfree.chart.axis.DateAxis} to define the values that this axis
 * supports. As an example, the {@link org.jfree.chart.axis.SegmentedTimeline}
 * implements a timeline formed by segments of equal length (ex. days, hours,
 * minutes) where some segments can be included in the timeline and others
 * excluded. Therefore timelines like "working days" or "working hours" can be
 * created where non-working days or non-working hours respectively can be
 * removed from the timeline, and therefore from the axis. This creates a smooth
 * plot with equal separation between all included segments.
 * <P>
 * Because Timelines were created mainly for Date related axis, values are
 * represented as longs instead of doubles. In this case, the domain value is
 * just the number of milliseconds since January 1, 1970, 00:00:00 GMT as
 * defined by the getTime() method of {@link java.util.Date}.
 *
 * @see org.jfree.chart.axis.SegmentedTimeline
 * @see org.jfree.chart.axis.DateAxis
 */
public interface Timeline {

    /**
     * Translates a millisecond (as defined by java.util.Date) into an index
     * along this timeline.
     *
     * @param millisecond  the millisecond.
     *
     * @return A timeline value.
     */
    long toTimelineValue(long millisecond);

    /**
     * Translates a date into a value on this timeline.
     *
     * @param date  the date.
     *
     * @return A timeline value
     */
    long toTimelineValue(Date date);

    /**
     * Translates a value relative to this timeline into a domain value. The
     * domain value obtained by this method is not always the same domain value
     * that could have been supplied to
     * translateDomainValueToTimelineValue(domainValue).
     * This is because the original tranformation may not be complete
     * reversable.
     *
     * @see org.jfree.chart.axis.SegmentedTimeline
     *
     * @param timelineValue  a timeline value.
     *
     * @return A domain value.
     */
    long toMillisecond(long timelineValue);

    /**
     * Returns <code>true if a value is contained in the timeline values.
     *
     * @param millisecond  the millisecond.
     *
     * @return <code>true if value is contained in the timeline and
     *         <code>false otherwise.
     */
    boolean containsDomainValue(long millisecond);

    /**
     * Returns <code>true if a date is contained in the timeline values.
     *
     * @param date  the date to verify.
     *
     * @return <code>true if value is contained in the timeline and
     *         <code>false  otherwise.
     */
    boolean containsDomainValue(Date date);

    /**
     * Returns <code>true if a range of values are contained in the
     * timeline.
     *
     * @param fromMillisecond  the start of the range to verify.
     * @param toMillisecond  the end of the range to verify.
     *
     * @return <code>true if the range is contained in the timeline or
     *         <code>false otherwise
     */
    boolean containsDomainRange(long fromMillisecond, long toMillisecond);

    /**
     * Returns <code>true if a range of dates are contained in the
     * timeline.
     *
     * @param fromDate  the start of the range to verify.
     * @param toDate  the end of the range to verify.
     *
     * @return <code>true if the range is contained in the timeline or
     *         <code>false otherwise
     */
    boolean containsDomainRange(Date fromDate, Date toDate);

}

Other jfreechart examples (source code examples)

Here is a short list of links related to this jfreechart Timeline.java source code file:



my book on functional programming

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.