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jfreechart example source code file (JThermometer.java)

This example jfreechart source code file (JThermometer.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

awt, defaultvaluedataset, font, font, gui, io, jfreechart, jfreechart, jthermometer, jthermometer, number, serializable, string, string, swing, text, texttitle, thermometerplot, valueaxis

The jfreechart JThermometer.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.]
 *
 * -----------------
 * JThermometer.java
 * -----------------
 * A plot that displays a single value in a thermometer type display.
 *
 * (C) Copyright 2000-2008, Australian Antarctic Division and Contributors.
 *
 * Original Author:  Bryan Scott.
 * Contributor(s):   David Gilbert (for Object Refinery Limited);
 *                   Irv Thomae;
 *
 * Changes (from 17-Sep-2002)
 * --------------------------
 * 17-Sep-2002 : Reviewed with Checkstyle utility (DG);
 * 18-Sep-2003 : Integrated new methods contributed by Irv Thomae (DG);
 * 08-Jan-2004 : Renamed AbstractTitle --> Title and moved to new package (DG);
 * 31-May-2005 : Fixed typo in method name (DG);
 *
 */

package org.jfree.chart.plot;

import java.awt.CardLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Paint;
import java.io.Serializable;
import java.text.DecimalFormat;

import javax.swing.JPanel;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.title.TextTitle;
import org.jfree.chart.title.Title;
import org.jfree.data.general.DefaultValueDataset;
import org.jfree.ui.RectangleInsets;

/**
 * An initial quick and dirty.  The concept behind this class would be to
 * generate a gui bean that could be used within JBuilder, Netbeans etc...
 */
public class JThermometer extends JPanel implements Serializable {

    /** For serialization. */
    private static final long serialVersionUID = 1079905665515589820L;

    /** The dataset. */
    private DefaultValueDataset data;

    /** The chart. */
    private JFreeChart chart;

    /** The chart panel. */
    private ChartPanel panel;

    /** The thermometer plot. */
    private ThermometerPlot plot = new ThermometerPlot();

    /**
     * Default constructor.
     */
    public JThermometer() {
        super(new CardLayout());
        this.plot.setInsets(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
        this.data = new DefaultValueDataset();
        this.plot.setDataset(this.data);
        this.chart = new JFreeChart(null, JFreeChart.DEFAULT_TITLE_FONT,
                this.plot, false);
        this.panel = new ChartPanel(this.chart);
        add(this.panel, "Panel");
        setBackground(getBackground());
    }

    /**
     * Adds a subtitle to the chart.
     *
     * @param subtitle  the subtitle.
     */
    public void addSubtitle(Title subtitle) {
        this.chart.addSubtitle(subtitle);
    }

    /**
     * Adds a subtitle to the chart.
     *
     * @param subtitle  the subtitle.
     */
    public void addSubtitle(String subtitle) {
        this.chart.addSubtitle(new TextTitle(subtitle));
    }

    /**
     * Adds a subtitle to the chart.
     *
     * @param subtitle  the subtitle.
     * @param font  the subtitle font.
     */
    public void addSubtitle(String subtitle, Font font) {
        this.chart.addSubtitle(new TextTitle(subtitle, font));
    }

    /**
     * Sets the value format for the thermometer.
     *
     * @param df  the formatter.
     */
    public void setValueFormat(DecimalFormat df) {
        this.plot.setValueFormat(df);
    }

    /**
     * Sets the lower and upper bounds for the thermometer.
     *
     * @param lower  the lower bound.
     * @param upper  the upper bound.
     */
    public void setRange(double lower, double upper) {
        this.plot.setRange(lower, upper);
    }

    /**
     * Sets the range.
     *
     * @param range  the range type.
     * @param displayLow  the low value.
     * @param displayHigh  the high value.
     */
    public void setSubrangeInfo(int range, double displayLow,
                                double displayHigh) {
        this.plot.setSubrangeInfo(range, displayLow, displayHigh);
    }

    /**
     * Sets the range.
     *
     * @param range  the range type.
     * @param rangeLow  the low value for the range.
     * @param rangeHigh  the high value for the range.
     * @param displayLow  the low value for display.
     * @param displayHigh  the high value for display.
     */
    public void setSubrangeInfo(int range,
                             double rangeLow, double rangeHigh,
                             double displayLow, double displayHigh) {

        this.plot.setSubrangeInfo(range, rangeLow, rangeHigh, displayLow,
                displayHigh);

    }

    /**
     * Sets the location at which the temperature value is displayed.
     *
     * @param loc  the location.
     */
    public void setValueLocation(int loc) {
        this.plot.setValueLocation(loc);
        this.panel.repaint();
    }

    /**
     * Sets the value paint.
     *
     * @param paint  the paint.
     */
    public void setValuePaint(Paint paint) {
        this.plot.setValuePaint(paint);
    }

    /**
     * Returns the value of the thermometer.
     *
     * @return The value.
     */
    public Number getValue() {
        if (this.data != null) {
            return this.data.getValue();
        }
        else {
            return null;
        }
    }

    /**
     * Sets the value of the thermometer.
     *
     * @param value  the value.
     */
    public void setValue(double value) {
        setValue(new Double(value));
    }

    /**
     * Sets the value of the thermometer.
     *
     * @param value  the value.
     */
    public void setValue(Number value) {
        if (this.data != null) {
            this.data.setValue(value);
        }
    }

    /**
     * Sets the unit type.
     *
     * @param i  the unit type.
     */
    public void setUnits(int i) {
        if (this.plot != null) {
            this.plot.setUnits(i);
        }
    }

    /**
     * Sets the outline paint.
     *
     * @param p  the paint.
     */
    public void setOutlinePaint(Paint p) {
        if (this.plot != null) {
            this.plot.setOutlinePaint(p);
        }
    }

    /**
     * Sets the foreground color.
     *
     * @param fg  the foreground color.
     */
    public void setForeground(Color fg) {
        super.setForeground(fg);
        if (this.plot != null) {
            this.plot.setThermometerPaint(fg);
        }
    }

    /**
     * Sets the background color.
     *
     * @param bg  the background color.
     */
    public void setBackground(Color bg) {
        super.setBackground(bg);
        if (this.plot != null) {
            this.plot.setBackgroundPaint(bg);
        }
        if (this.chart != null) {
            this.chart.setBackgroundPaint(bg);
        }
        if (this.panel != null) {
            this.panel.setBackground(bg);
        }
    }

    /**
     * Sets the value font.
     *
     * @param f  the font.
     */
    public void setValueFont(Font f) {
        if (this.plot != null) {
            this.plot.setValueFont(f);
        }
    }

    /**
     * Returns the tick label font.
     *
     * @return The tick label font.
     */
    public Font getTickLabelFont() {
        ValueAxis axis = this.plot.getRangeAxis();
        return axis.getTickLabelFont();
    }

    /**
     * Sets the tick label font.
     *
     * @param font  the font.
     */
    public void setTickLabelFont(Font font) {
        ValueAxis axis = this.plot.getRangeAxis();
        axis.setTickLabelFont(font);
    }

    /**
     * Increases or decreases the tick font size.
     *
     * @param delta  the change in size.
     */
    public void changeTickFontSize(int delta) {
        Font f = getTickLabelFont();
        String fName = f.getFontName();
        Font newFont = new Font(fName, f.getStyle(), (f.getSize() + delta));
        setTickLabelFont(newFont);
    }

    /**
     * Sets the tick font style.
     *
     * @param style  the style.
     */
    public void setTickFontStyle(int style) {
        Font f = getTickLabelFont();
        String fName = f.getFontName();
        Font newFont = new Font(fName, style, f.getSize());
        setTickLabelFont(newFont);
    }

    /**
     * Sets the flag that controls whether or not the display range follows the
     * data value.
     *
     * @param flag  the new value of the flag.
     */
    public void setFollowDataInSubranges(boolean flag) {
        this.plot.setFollowDataInSubranges(flag);
    }

    /**
     * Sets the flag that controls whether or not value lines are displayed.
     *
     * @param b  the new flag value.
     */
    public void setShowValueLines(boolean b) {
        this.plot.setShowValueLines(b);
    }

    /**
     * Sets the location for the axis.
     *
     * @param location  the location.
     */
    public void setShowAxisLocation(int location) {
        this.plot.setAxisLocation(location);
    }

    /**
     * Returns the location for the axis.
     *
     * @return The location.
     */
    public int getShowAxisLocation() {
      return this.plot.getAxisLocation();
    }

}

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