jfreechart example source code file (ThermometerPlot.java)
The jfreechart ThermometerPlot.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.]
*
* --------------------
* ThermometerPlot.java
* --------------------
*
* (C) Copyright 2000-2008, by Bryan Scott and Contributors.
*
* Original Author: Bryan Scott (based on MeterPlot by Hari).
* Contributor(s): David Gilbert (for Object Refinery Limited).
* Arnaud Lelievre;
* Julien Henry (see patch 1769088) (DG);
*
* Changes
* -------
* 11-Apr-2002 : Version 1, contributed by Bryan Scott;
* 15-Apr-2002 : Changed to implement VerticalValuePlot;
* 29-Apr-2002 : Added getVerticalValueAxis() method (DG);
* 25-Jun-2002 : Removed redundant imports (DG);
* 17-Sep-2002 : Reviewed with Checkstyle utility (DG);
* 18-Sep-2002 : Extensive changes made to API, to iron out bugs and
* inconsistencies (DG);
* 13-Oct-2002 : Corrected error datasetChanged which would generate exceptions
* when value set to null (BRS).
* 23-Jan-2003 : Removed one constructor (DG);
* 26-Mar-2003 : Implemented Serializable (DG);
* 02-Jun-2003 : Removed test for compatible range axis (DG);
* 01-Jul-2003 : Added additional check in draw method to ensure value not
* null (BRS);
* 08-Sep-2003 : Added internationalization via use of properties
* resourceBundle (RFE 690236) (AL);
* 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
* 29-Sep-2003 : Updated draw to set value of cursor to non-zero and allow
* painting of axis. An incomplete fix and needs to be set for
* left or right drawing (BRS);
* 19-Nov-2003 : Added support for value labels to be displayed left of the
* thermometer
* 19-Nov-2003 : Improved axis drawing (now default axis does not draw axis line
* and is closer to the bulb). Added support for the positioning
* of the axis to the left or right of the bulb. (BRS);
* 03-Dec-2003 : Directly mapped deprecated setData()/getData() method to
* get/setDataset() (TM);
* 21-Jan-2004 : Update for renamed method in ValueAxis (DG);
* 07-Apr-2004 : Changed string width calculation (DG);
* 12-Nov-2004 : Implemented the new Zoomable interface (DG);
* 06-Jan-2004 : Added getOrientation() method (DG);
* 11-Jan-2005 : Removed deprecated code in preparation for 1.0.0 release (DG);
* 29-Mar-2005 : Fixed equals() method (DG);
* 05-May-2005 : Updated draw() method parameters (DG);
* 09-Jun-2005 : Fixed more bugs in equals() method (DG);
* 10-Jun-2005 : Fixed minor bug in setDisplayRange() method (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 14-Nov-2006 : Fixed margin when drawing (DG);
* 03-May-2007 : Fixed datasetChanged() to handle null dataset, added null
* argument check and event notification to setRangeAxis(),
* added null argument check to setPadding(), setValueFont(),
* setValuePaint(), setValueFormat() and setMercuryPaint(),
* deprecated get/setShowValueLines(), deprecated
* getMinimum/MaximumVerticalDataValue(), and fixed serialization
* bug (DG);
* 24-Sep-2007 : Implemented new methods in Zoomable interface (DG);
* 08-Oct-2007 : Added attributes for thermometer dimensions - see patch 1769088
* by Julien Henry (DG);
* 18-Dec-2008 : Use ResourceBundleWrapper - see patch 1607918 by
* Jess Thrysoee (DG);
*
*/
package org.jfree.chart.plot;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Stroke;
import java.awt.geom.Area;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Arrays;
import java.util.ResourceBundle;
import org.jfree.chart.LegendItemCollection;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.PlotChangeEvent;
import org.jfree.chart.util.ResourceBundleWrapper;
import org.jfree.data.Range;
import org.jfree.data.general.DatasetChangeEvent;
import org.jfree.data.general.DefaultValueDataset;
import org.jfree.data.general.ValueDataset;
import org.jfree.io.SerialUtilities;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RectangleInsets;
import org.jfree.util.ObjectUtilities;
import org.jfree.util.PaintUtilities;
import org.jfree.util.UnitType;
/**
* A plot that displays a single value (from a {@link ValueDataset}) in a
* thermometer type display.
* <p>
* This plot supports a number of options:
* <ol>
* <li>three sub-ranges which could be viewed as 'Normal', 'Warning'
* and 'Critical' ranges.</li>
* <li>the thermometer can be run in two modes:
* <ul>
* <li>fixed range, or
* <li>range adjusts to current sub-range.
* </ul>
* </li>
* <li>settable units to be displayed.
* <li>settable display location for the value text.
* </ol>
*/
public class ThermometerPlot extends Plot implements ValueAxisPlot,
Zoomable, Cloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 4087093313147984390L;
/** A constant for unit type 'None'. */
public static final int UNITS_NONE = 0;
/** A constant for unit type 'Fahrenheit'. */
public static final int UNITS_FAHRENHEIT = 1;
/** A constant for unit type 'Celcius'. */
public static final int UNITS_CELCIUS = 2;
/** A constant for unit type 'Kelvin'. */
public static final int UNITS_KELVIN = 3;
/** A constant for the value label position (no label). */
public static final int NONE = 0;
/** A constant for the value label position (right of the thermometer). */
public static final int RIGHT = 1;
/** A constant for the value label position (left of the thermometer). */
public static final int LEFT = 2;
/** A constant for the value label position (in the thermometer bulb). */
public static final int BULB = 3;
/** A constant for the 'normal' range. */
public static final int NORMAL = 0;
/** A constant for the 'warning' range. */
public static final int WARNING = 1;
/** A constant for the 'critical' range. */
public static final int CRITICAL = 2;
/**
* The bulb radius.
*
* @deprecated As of 1.0.7, use {@link #getBulbRadius()}.
*/
protected static final int BULB_RADIUS = 40;
/**
* The bulb diameter.
*
* @deprecated As of 1.0.7, use {@link #getBulbDiameter()}.
*/
protected static final int BULB_DIAMETER = BULB_RADIUS * 2;
/**
* The column radius.
*
* @deprecated As of 1.0.7, use {@link #getColumnRadius()}.
*/
protected static final int COLUMN_RADIUS = 20;
/**
* The column diameter.
*
* @deprecated As of 1.0.7, use {@link #getColumnDiameter()}.
*/
protected static final int COLUMN_DIAMETER = COLUMN_RADIUS * 2;
/**
* The gap radius.
*
* @deprecated As of 1.0.7, use {@link #getGap()}.
*/
protected static final int GAP_RADIUS = 5;
/**
* The gap diameter.
*
* @deprecated As of 1.0.7, use {@link #getGap()} times two.
*/
protected static final int GAP_DIAMETER = GAP_RADIUS * 2;
/** The axis gap. */
protected static final int AXIS_GAP = 10;
/** The unit strings. */
protected static final String[] UNITS = {"", "\u00B0F", "\u00B0C",
"\u00B0K"};
/** Index for low value in subrangeInfo matrix. */
protected static final int RANGE_LOW = 0;
/** Index for high value in subrangeInfo matrix. */
protected static final int RANGE_HIGH = 1;
/** Index for display low value in subrangeInfo matrix. */
protected static final int DISPLAY_LOW = 2;
/** Index for display high value in subrangeInfo matrix. */
protected static final int DISPLAY_HIGH = 3;
/** The default lower bound. */
protected static final double DEFAULT_LOWER_BOUND = 0.0;
/** The default upper bound. */
protected static final double DEFAULT_UPPER_BOUND = 100.0;
/**
* The default bulb radius.
*
* @since 1.0.7
*/
protected static final int DEFAULT_BULB_RADIUS = 40;
/**
* The default column radius.
*
* @since 1.0.7
*/
protected static final int DEFAULT_COLUMN_RADIUS = 20;
/**
* The default gap between the outlines representing the thermometer.
*
* @since 1.0.7
*/
protected static final int DEFAULT_GAP = 5;
/** The dataset for the plot. */
private ValueDataset dataset;
/** The range axis. */
private ValueAxis rangeAxis;
/** The lower bound for the thermometer. */
private double lowerBound = DEFAULT_LOWER_BOUND;
/** The upper bound for the thermometer. */
private double upperBound = DEFAULT_UPPER_BOUND;
/**
* The value label position.
*
* @since 1.0.7
*/
private int bulbRadius = DEFAULT_BULB_RADIUS;
/**
* The column radius.
*
* @since 1.0.7
*/
private int columnRadius = DEFAULT_COLUMN_RADIUS;
/**
* The gap between the two outlines the represent the thermometer.
*
* @since 1.0.7
*/
private int gap = DEFAULT_GAP;
/**
* Blank space inside the plot area around the outside of the thermometer.
*/
private RectangleInsets padding;
/** Stroke for drawing the thermometer */
private transient Stroke thermometerStroke = new BasicStroke(1.0f);
/** Paint for drawing the thermometer */
private transient Paint thermometerPaint = Color.black;
/** The display units */
private int units = UNITS_CELCIUS;
/** The value label position. */
private int valueLocation = BULB;
/** The position of the axis **/
private int axisLocation = LEFT;
/** The font to write the value in */
private Font valueFont = new Font("SansSerif", Font.BOLD, 16);
/** Colour that the value is written in */
private transient Paint valuePaint = Color.white;
/** Number format for the value */
private NumberFormat valueFormat = new DecimalFormat();
/** The default paint for the mercury in the thermometer. */
private transient Paint mercuryPaint = Color.lightGray;
/** A flag that controls whether value lines are drawn. */
private boolean showValueLines = false;
/** The display sub-range. */
private int subrange = -1;
/** The start and end values for the subranges. */
private double[][] subrangeInfo = {
{0.0, 50.0, 0.0, 50.0},
{50.0, 75.0, 50.0, 75.0},
{75.0, 100.0, 75.0, 100.0}
};
/**
* A flag that controls whether or not the axis range adjusts to the
* sub-ranges.
*/
private boolean followDataInSubranges = false;
/**
* A flag that controls whether or not the mercury paint changes with
* the subranges.
*/
private boolean useSubrangePaint = true;
/** Paint for each range */
private transient Paint[] subrangePaint = {Color.green, Color.orange,
Color.red};
/** A flag that controls whether the sub-range indicators are visible. */
private boolean subrangeIndicatorsVisible = true;
/** The stroke for the sub-range indicators. */
private transient Stroke subrangeIndicatorStroke = new BasicStroke(2.0f);
/** The range indicator stroke. */
private transient Stroke rangeIndicatorStroke = new BasicStroke(3.0f);
/** The resourceBundle for the localization. */
protected static ResourceBundle localizationResources
= ResourceBundleWrapper.getBundle(
"org.jfree.chart.plot.LocalizationBundle");
/**
* Creates a new thermometer plot.
*/
public ThermometerPlot() {
this(new DefaultValueDataset());
}
/**
* Creates a new thermometer plot, using default attributes where necessary.
*
* @param dataset the data set.
*/
public ThermometerPlot(ValueDataset dataset) {
super();
this.padding = new RectangleInsets(UnitType.RELATIVE, 0.05, 0.05, 0.05,
0.05);
this.dataset = dataset;
if (dataset != null) {
dataset.addChangeListener(this);
}
NumberAxis axis = new NumberAxis(null);
axis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
axis.setAxisLineVisible(false);
axis.setPlot(this);
axis.addChangeListener(this);
this.rangeAxis = axis;
setAxisRange();
}
/**
* Returns the dataset for the plot.
*
* @return The dataset (possibly <code>null).
*
* @see #setDataset(ValueDataset)
*/
public ValueDataset getDataset() {
return this.dataset;
}
/**
* Sets the dataset for the plot, replacing the existing dataset if there
* is one, and sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param dataset the dataset (<code>null permitted).
*
* @see #getDataset()
*/
public void setDataset(ValueDataset dataset) {
// if there is an existing dataset, remove the plot from the list
// of change listeners...
ValueDataset existing = this.dataset;
if (existing != null) {
existing.removeChangeListener(this);
}
// set the new dataset, and register the chart as a change listener...
this.dataset = dataset;
if (dataset != null) {
setDatasetGroup(dataset.getGroup());
dataset.addChangeListener(this);
}
// send a dataset change event to self...
DatasetChangeEvent event = new DatasetChangeEvent(this, dataset);
datasetChanged(event);
}
/**
* Returns the range axis.
*
* @return The range axis (never <code>null).
*
* @see #setRangeAxis(ValueAxis)
*/
public ValueAxis getRangeAxis() {
return this.rangeAxis;
}
/**
* Sets the range axis for the plot and sends a {@link PlotChangeEvent} to
* all registered listeners.
*
* @param axis the new axis (<code>null not permitted).
*
* @see #getRangeAxis()
*/
public void setRangeAxis(ValueAxis axis) {
if (axis == null) {
throw new IllegalArgumentException("Null 'axis' argument.");
}
// plot is registered as a listener with the existing axis...
this.rangeAxis.removeChangeListener(this);
axis.setPlot(this);
axis.addChangeListener(this);
this.rangeAxis = axis;
fireChangeEvent();
}
/**
* Returns the lower bound for the thermometer. The data value can be set
* lower than this, but it will not be shown in the thermometer.
*
* @return The lower bound.
*
* @see #setLowerBound(double)
*/
public double getLowerBound() {
return this.lowerBound;
}
/**
* Sets the lower bound for the thermometer.
*
* @param lower the lower bound.
*
* @see #getLowerBound()
*/
public void setLowerBound(double lower) {
this.lowerBound = lower;
setAxisRange();
}
/**
* Returns the upper bound for the thermometer. The data value can be set
* higher than this, but it will not be shown in the thermometer.
*
* @return The upper bound.
*
* @see #setUpperBound(double)
*/
public double getUpperBound() {
return this.upperBound;
}
/**
* Sets the upper bound for the thermometer.
*
* @param upper the upper bound.
*
* @see #getUpperBound()
*/
public void setUpperBound(double upper) {
this.upperBound = upper;
setAxisRange();
}
/**
* 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.lowerBound = lower;
this.upperBound = upper;
setAxisRange();
}
/**
* Returns the padding for the thermometer. This is the space inside the
* plot area.
*
* @return The padding (never <code>null).
*
* @see #setPadding(RectangleInsets)
*/
public RectangleInsets getPadding() {
return this.padding;
}
/**
* Sets the padding for the thermometer and sends a {@link PlotChangeEvent}
* to all registered listeners.
*
* @param padding the padding (<code>null not permitted).
*
* @see #getPadding()
*/
public void setPadding(RectangleInsets padding) {
if (padding == null) {
throw new IllegalArgumentException("Null 'padding' argument.");
}
this.padding = padding;
fireChangeEvent();
}
/**
* Returns the stroke used to draw the thermometer outline.
*
* @return The stroke (never <code>null).
*
* @see #setThermometerStroke(Stroke)
* @see #getThermometerPaint()
*/
public Stroke getThermometerStroke() {
return this.thermometerStroke;
}
/**
* Sets the stroke used to draw the thermometer outline and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param s the new stroke (<code>null ignored).
*
* @see #getThermometerStroke()
*/
public void setThermometerStroke(Stroke s) {
if (s != null) {
this.thermometerStroke = s;
fireChangeEvent();
}
}
/**
* Returns the paint used to draw the thermometer outline.
*
* @return The paint (never <code>null).
*
* @see #setThermometerPaint(Paint)
* @see #getThermometerStroke()
*/
public Paint getThermometerPaint() {
return this.thermometerPaint;
}
/**
* Sets the paint used to draw the thermometer outline and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param paint the new paint (<code>null ignored).
*
* @see #getThermometerPaint()
*/
public void setThermometerPaint(Paint paint) {
if (paint != null) {
this.thermometerPaint = paint;
fireChangeEvent();
}
}
/**
* Returns a code indicating the unit display type. This is one of
* {@link #UNITS_NONE}, {@link #UNITS_FAHRENHEIT}, {@link #UNITS_CELCIUS}
* and {@link #UNITS_KELVIN}.
*
* @return The units type.
*
* @see #setUnits(int)
*/
public int getUnits() {
return this.units;
}
/**
* Sets the units to be displayed in the thermometer. Use one of the
* following constants:
*
* <ul>
* <li>UNITS_NONE : no units displayed.
* <li>UNITS_FAHRENHEIT : units displayed in Fahrenheit.
* <li>UNITS_CELCIUS : units displayed in Celcius.
* <li>UNITS_KELVIN : units displayed in Kelvin.
* </ul>
*
* @param u the new unit type.
*
* @see #getUnits()
*/
public void setUnits(int u) {
if ((u >= 0) && (u < UNITS.length)) {
if (this.units != u) {
this.units = u;
fireChangeEvent();
}
}
}
/**
* Sets the unit type.
*
* @param u the unit type (<code>null ignored).
*
* @deprecated Use setUnits(int) instead. Deprecated as of version 1.0.6,
* because this method is a little obscure and redundant anyway.
*/
public void setUnits(String u) {
if (u == null) {
return;
}
u = u.toUpperCase().trim();
for (int i = 0; i < UNITS.length; ++i) {
if (u.equals(UNITS[i].toUpperCase().trim())) {
setUnits(i);
i = UNITS.length;
}
}
}
/**
* Returns a code indicating the location at which the value label is
* displayed.
*
* @return The location (one of {@link #NONE}, {@link #RIGHT},
* {@link #LEFT} and {@link #BULB}.).
*/
public int getValueLocation() {
return this.valueLocation;
}
/**
* Sets the location at which the current value is displayed and sends a
* {@link PlotChangeEvent} to all registered listeners.
* <P>
* The location can be one of the constants:
* <code>NONE,
* <code>RIGHT
* <code>LEFT and
* <code>BULB.
*
* @param location the location.
*/
public void setValueLocation(int location) {
if ((location >= 0) && (location < 4)) {
this.valueLocation = location;
fireChangeEvent();
}
else {
throw new IllegalArgumentException("Location not recognised.");
}
}
/**
* Returns the axis location.
*
* @return The location (one of {@link #NONE}, {@link #LEFT} and
* {@link #RIGHT}).
*
* @see #setAxisLocation(int)
*/
public int getAxisLocation() {
return this.axisLocation;
}
/**
* Sets the location at which the axis is displayed relative to the
* thermometer, and sends a {@link PlotChangeEvent} to all registered
* listeners.
*
* @param location the location (one of {@link #NONE}, {@link #LEFT} and
* {@link #RIGHT}).
*
* @see #getAxisLocation()
*/
public void setAxisLocation(int location) {
if ((location >= 0) && (location < 3)) {
this.axisLocation = location;
fireChangeEvent();
}
else {
throw new IllegalArgumentException("Location not recognised.");
}
}
/**
* Gets the font used to display the current value.
*
* @return The font.
*
* @see #setValueFont(Font)
*/
public Font getValueFont() {
return this.valueFont;
}
/**
* Sets the font used to display the current value.
*
* @param f the new font (<code>null not permitted).
*
* @see #getValueFont()
*/
public void setValueFont(Font f) {
if (f == null) {
throw new IllegalArgumentException("Null 'font' argument.");
}
if (!this.valueFont.equals(f)) {
this.valueFont = f;
fireChangeEvent();
}
}
/**
* Gets the paint used to display the current value.
*
* @return The paint.
*
* @see #setValuePaint(Paint)
*/
public Paint getValuePaint() {
return this.valuePaint;
}
/**
* Sets the paint used to display the current value and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param paint the new paint (<code>null not permitted).
*
* @see #getValuePaint()
*/
public void setValuePaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
if (!this.valuePaint.equals(paint)) {
this.valuePaint = paint;
fireChangeEvent();
}
}
// FIXME: No getValueFormat() method?
/**
* Sets the formatter for the value label and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param formatter the new formatter (<code>null not permitted).
*/
public void setValueFormat(NumberFormat formatter) {
if (formatter == null) {
throw new IllegalArgumentException("Null 'formatter' argument.");
}
this.valueFormat = formatter;
fireChangeEvent();
}
/**
* Returns the default mercury paint.
*
* @return The paint (never <code>null).
*
* @see #setMercuryPaint(Paint)
*/
public Paint getMercuryPaint() {
return this.mercuryPaint;
}
/**
* Sets the default mercury paint and sends a {@link PlotChangeEvent} to
* all registered listeners.
*
* @param paint the new paint (<code>null not permitted).
*
* @see #getMercuryPaint()
*/
public void setMercuryPaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.mercuryPaint = paint;
fireChangeEvent();
}
/**
* Returns the flag that controls whether not value lines are displayed.
*
* @return The flag.
*
* @see #setShowValueLines(boolean)
*
* @deprecated This flag doesn't do anything useful/visible. Deprecated
* as of version 1.0.6.
*/
public boolean getShowValueLines() {
return this.showValueLines;
}
/**
* Sets the display as to whether to show value lines in the output.
*
* @param b Whether to show value lines in the thermometer
*
* @see #getShowValueLines()
*
* @deprecated This flag doesn't do anything useful/visible. Deprecated
* as of version 1.0.6.
*/
public void setShowValueLines(boolean b) {
this.showValueLines = b;
fireChangeEvent();
}
/**
* Sets information for a particular range.
*
* @param range the range to specify information about.
* @param low the low value for the range
* @param hi the high value for the range
*/
public void setSubrangeInfo(int range, double low, double hi) {
setSubrangeInfo(range, low, hi, low, hi);
}
/**
* Sets the subrangeInfo attribute of the ThermometerPlot object
*
* @param range the new rangeInfo value.
* @param rangeLow the new rangeInfo value
* @param rangeHigh the new rangeInfo value
* @param displayLow the new rangeInfo value
* @param displayHigh the new rangeInfo value
*/
public void setSubrangeInfo(int range,
double rangeLow, double rangeHigh,
double displayLow, double displayHigh) {
if ((range >= 0) && (range < 3)) {
setSubrange(range, rangeLow, rangeHigh);
setDisplayRange(range, displayLow, displayHigh);
setAxisRange();
fireChangeEvent();
}
}
/**
* Sets the bounds for a subrange.
*
* @param range the range type.
* @param low the low value.
* @param high the high value.
*/
public void setSubrange(int range, double low, double high) {
if ((range >= 0) && (range < 3)) {
this.subrangeInfo[range][RANGE_HIGH] = high;
this.subrangeInfo[range][RANGE_LOW] = low;
}
}
/**
* Sets the displayed bounds for a sub range.
*
* @param range the range type.
* @param low the low value.
* @param high the high value.
*/
public void setDisplayRange(int range, double low, double high) {
if ((range >= 0) && (range < this.subrangeInfo.length)
&& isValidNumber(high) && isValidNumber(low)) {
if (high > low) {
this.subrangeInfo[range][DISPLAY_HIGH] = high;
this.subrangeInfo[range][DISPLAY_LOW] = low;
}
else {
this.subrangeInfo[range][DISPLAY_HIGH] = low;
this.subrangeInfo[range][DISPLAY_LOW] = high;
}
}
}
/**
* Gets the paint used for a particular subrange.
*
* @param range the range (.
*
* @return The paint.
*
* @see #setSubrangePaint(int, Paint)
*/
public Paint getSubrangePaint(int range) {
if ((range >= 0) && (range < this.subrangePaint.length)) {
return this.subrangePaint[range];
}
else {
return this.mercuryPaint;
}
}
/**
* Sets the paint to be used for a subrange and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param range the range (0, 1 or 2).
* @param paint the paint to be applied (<code>null not permitted).
*
* @see #getSubrangePaint(int)
*/
public void setSubrangePaint(int range, Paint paint) {
if ((range >= 0)
&& (range < this.subrangePaint.length) && (paint != null)) {
this.subrangePaint[range] = paint;
fireChangeEvent();
}
}
/**
* Returns a flag that controls whether or not the thermometer axis zooms
* to display the subrange within which the data value falls.
*
* @return The flag.
*/
public boolean getFollowDataInSubranges() {
return this.followDataInSubranges;
}
/**
* Sets the flag that controls whether or not the thermometer axis zooms
* to display the subrange within which the data value falls.
*
* @param flag the flag.
*/
public void setFollowDataInSubranges(boolean flag) {
this.followDataInSubranges = flag;
fireChangeEvent();
}
/**
* Returns a flag that controls whether or not the mercury color changes
* for each subrange.
*
* @return The flag.
*
* @see #setUseSubrangePaint(boolean)
*/
public boolean getUseSubrangePaint() {
return this.useSubrangePaint;
}
/**
* Sets the range colour change option.
*
* @param flag the new range colour change option
*
* @see #getUseSubrangePaint()
*/
public void setUseSubrangePaint(boolean flag) {
this.useSubrangePaint = flag;
fireChangeEvent();
}
/**
* Returns the bulb radius, in Java2D units.
* @return The bulb radius.
*
* @since 1.0.7
*/
public int getBulbRadius() {
return this.bulbRadius;
}
/**
* Sets the bulb radius (in Java2D units) and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param r the new radius (in Java2D units).
*
* @see #getBulbRadius()
*
* @since 1.0.7
*/
public void setBulbRadius(int r) {
this.bulbRadius = r;
fireChangeEvent();
}
/**
* Returns the bulb diameter, which is always twice the value returned
* by {@link #getBulbRadius()}.
*
* @return The bulb diameter.
*
* @since 1.0.7
*/
public int getBulbDiameter() {
return getBulbRadius() * 2;
}
/**
* Returns the column radius, in Java2D units.
*
* @return The column radius.
*
* @see #setColumnRadius(int)
*
* @since 1.0.7
*/
public int getColumnRadius() {
return this.columnRadius;
}
/**
* Sets the column radius (in Java2D units) and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param r the new radius.
*
* @see #getColumnRadius()
*
* @since 1.0.7
*/
public void setColumnRadius(int r) {
this.columnRadius = r;
fireChangeEvent();
}
/**
* Returns the column diameter, which is always twice the value returned
* by {@link #getColumnRadius()}.
*
* @return The column diameter.
*
* @since 1.0.7
*/
public int getColumnDiameter() {
return getColumnRadius() * 2;
}
/**
* Returns the gap, in Java2D units, between the two outlines that
* represent the thermometer.
*
* @return The gap.
*
* @see #setGap(int)
*
* @since 1.0.7
*/
public int getGap() {
return this.gap;
}
/**
* Sets the gap (in Java2D units) between the two outlines that represent
* the thermometer, and sends a {@link PlotChangeEvent} to all registered
* listeners.
*
* @param gap the new gap.
*
* @see #getGap()
*
* @since 1.0.7
*/
public void setGap(int gap) {
this.gap = gap;
fireChangeEvent();
}
/**
* Draws the plot on a Java 2D graphics device (such as the screen or a
* printer).
*
* @param g2 the graphics device.
* @param area the area within which the plot should be drawn.
* @param anchor the anchor point (<code>null permitted).
* @param parentState the state from the parent plot, if there is one.
* @param info collects info about the drawing.
*/
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
PlotState parentState,
PlotRenderingInfo info) {
RoundRectangle2D outerStem = new RoundRectangle2D.Double();
RoundRectangle2D innerStem = new RoundRectangle2D.Double();
RoundRectangle2D mercuryStem = new RoundRectangle2D.Double();
Ellipse2D outerBulb = new Ellipse2D.Double();
Ellipse2D innerBulb = new Ellipse2D.Double();
String temp = null;
FontMetrics metrics = null;
if (info != null) {
info.setPlotArea(area);
}
// adjust for insets...
RectangleInsets insets = getInsets();
insets.trim(area);
drawBackground(g2, area);
// adjust for padding...
Rectangle2D interior = (Rectangle2D) area.clone();
this.padding.trim(interior);
int midX = (int) (interior.getX() + (interior.getWidth() / 2));
int midY = (int) (interior.getY() + (interior.getHeight() / 2));
int stemTop = (int) (interior.getMinY() + getBulbRadius());
int stemBottom = (int) (interior.getMaxY() - getBulbDiameter());
Rectangle2D dataArea = new Rectangle2D.Double(midX - getColumnRadius(),
stemTop, getColumnRadius(), stemBottom - stemTop);
outerBulb.setFrame(midX - getBulbRadius(), stemBottom,
getBulbDiameter(), getBulbDiameter());
outerStem.setRoundRect(midX - getColumnRadius(), interior.getMinY(),
getColumnDiameter(), stemBottom + getBulbDiameter() - stemTop,
getColumnDiameter(), getColumnDiameter());
Area outerThermometer = new Area(outerBulb);
Area tempArea = new Area(outerStem);
outerThermometer.add(tempArea);
innerBulb.setFrame(midX - getBulbRadius() + getGap(), stemBottom
+ getGap(), getBulbDiameter() - getGap() * 2, getBulbDiameter()
- getGap() * 2);
innerStem.setRoundRect(midX - getColumnRadius() + getGap(),
interior.getMinY() + getGap(), getColumnDiameter()
- getGap() * 2, stemBottom + getBulbDiameter() - getGap() * 2
- stemTop, getColumnDiameter() - getGap() * 2,
getColumnDiameter() - getGap() * 2);
Area innerThermometer = new Area(innerBulb);
tempArea = new Area(innerStem);
innerThermometer.add(tempArea);
if ((this.dataset != null) && (this.dataset.getValue() != null)) {
double current = this.dataset.getValue().doubleValue();
double ds = this.rangeAxis.valueToJava2D(current, dataArea,
RectangleEdge.LEFT);
int i = getColumnDiameter() - getGap() * 2; // already calculated
int j = getColumnRadius() - getGap(); // already calculated
int l = (i / 2);
int k = (int) Math.round(ds);
if (k < (getGap() + interior.getMinY())) {
k = (int) (getGap() + interior.getMinY());
l = getBulbRadius();
}
Area mercury = new Area(innerBulb);
if (k < (stemBottom + getBulbRadius())) {
mercuryStem.setRoundRect(midX - j, k, i,
(stemBottom + getBulbRadius()) - k, l, l);
tempArea = new Area(mercuryStem);
mercury.add(tempArea);
}
g2.setPaint(getCurrentPaint());
g2.fill(mercury);
// draw range indicators...
if (this.subrangeIndicatorsVisible) {
g2.setStroke(this.subrangeIndicatorStroke);
Range range = this.rangeAxis.getRange();
// draw start of normal range
double value = this.subrangeInfo[NORMAL][RANGE_LOW];
if (range.contains(value)) {
double x = midX + getColumnRadius() + 2;
double y = this.rangeAxis.valueToJava2D(value, dataArea,
RectangleEdge.LEFT);
Line2D line = new Line2D.Double(x, y, x + 10, y);
g2.setPaint(this.subrangePaint[NORMAL]);
g2.draw(line);
}
// draw start of warning range
value = this.subrangeInfo[WARNING][RANGE_LOW];
if (range.contains(value)) {
double x = midX + getColumnRadius() + 2;
double y = this.rangeAxis.valueToJava2D(value, dataArea,
RectangleEdge.LEFT);
Line2D line = new Line2D.Double(x, y, x + 10, y);
g2.setPaint(this.subrangePaint[WARNING]);
g2.draw(line);
}
// draw start of critical range
value = this.subrangeInfo[CRITICAL][RANGE_LOW];
if (range.contains(value)) {
double x = midX + getColumnRadius() + 2;
double y = this.rangeAxis.valueToJava2D(value, dataArea,
RectangleEdge.LEFT);
Line2D line = new Line2D.Double(x, y, x + 10, y);
g2.setPaint(this.subrangePaint[CRITICAL]);
g2.draw(line);
}
}
// draw the axis...
if ((this.rangeAxis != null) && (this.axisLocation != NONE)) {
int drawWidth = AXIS_GAP;
if (this.showValueLines) {
drawWidth += getColumnDiameter();
}
Rectangle2D drawArea;
double cursor = 0;
switch (this.axisLocation) {
case RIGHT:
cursor = midX + getColumnRadius();
drawArea = new Rectangle2D.Double(cursor,
stemTop, drawWidth, (stemBottom - stemTop + 1));
this.rangeAxis.draw(g2, cursor, area, drawArea,
RectangleEdge.RIGHT, null);
break;
case LEFT:
default:
//cursor = midX - COLUMN_RADIUS - AXIS_GAP;
cursor = midX - getColumnRadius();
drawArea = new Rectangle2D.Double(cursor, stemTop,
drawWidth, (stemBottom - stemTop + 1));
this.rangeAxis.draw(g2, cursor, area, drawArea,
RectangleEdge.LEFT, null);
break;
}
}
// draw text value on screen
g2.setFont(this.valueFont);
g2.setPaint(this.valuePaint);
metrics = g2.getFontMetrics();
switch (this.valueLocation) {
case RIGHT:
g2.drawString(this.valueFormat.format(current),
midX + getColumnRadius() + getGap(), midY);
break;
case LEFT:
String valueString = this.valueFormat.format(current);
int stringWidth = metrics.stringWidth(valueString);
g2.drawString(valueString, midX - getColumnRadius()
- getGap() - stringWidth, midY);
break;
case BULB:
temp = this.valueFormat.format(current);
i = metrics.stringWidth(temp) / 2;
g2.drawString(temp, midX - i,
stemBottom + getBulbRadius() + getGap());
break;
default:
}
/***/
}
g2.setPaint(this.thermometerPaint);
g2.setFont(this.valueFont);
// draw units indicator
metrics = g2.getFontMetrics();
int tickX1 = midX - getColumnRadius() - getGap() * 2
- metrics.stringWidth(UNITS[this.units]);
if (tickX1 > area.getMinX()) {
g2.drawString(UNITS[this.units], tickX1,
(int) (area.getMinY() + 20));
}
// draw thermometer outline
g2.setStroke(this.thermometerStroke);
g2.draw(outerThermometer);
g2.draw(innerThermometer);
drawOutline(g2, area);
}
/**
* A zoom method that does nothing. Plots are required to support the
* zoom operation. In the case of a thermometer chart, it doesn't make
* sense to zoom in or out, so the method is empty.
*
* @param percent the zoom percentage.
*/
public void zoom(double percent) {
// intentionally blank
}
/**
* Returns a short string describing the type of plot.
*
* @return A short string describing the type of plot.
*/
public String getPlotType() {
return localizationResources.getString("Thermometer_Plot");
}
/**
* Checks to see if a new value means the axis range needs adjusting.
*
* @param event the dataset change event.
*/
public void datasetChanged(DatasetChangeEvent event) {
if (this.dataset != null) {
Number vn = this.dataset.getValue();
if (vn != null) {
double value = vn.doubleValue();
if (inSubrange(NORMAL, value)) {
this.subrange = NORMAL;
}
else if (inSubrange(WARNING, value)) {
this.subrange = WARNING;
}
else if (inSubrange(CRITICAL, value)) {
this.subrange = CRITICAL;
}
else {
this.subrange = -1;
}
setAxisRange();
}
}
super.datasetChanged(event);
}
/**
* Returns the minimum value in either the domain or the range, whichever
* is displayed against the vertical axis for the particular type of plot
* implementing this interface.
*
* @return The minimum value in either the domain or the range.
*
* @deprecated This method is not used. Officially deprecated in version
* 1.0.6.
*/
public Number getMinimumVerticalDataValue() {
return new Double(this.lowerBound);
}
/**
* Returns the maximum value in either the domain or the range, whichever
* is displayed against the vertical axis for the particular type of plot
* implementing this interface.
*
* @return The maximum value in either the domain or the range
*
* @deprecated This method is not used. Officially deprecated in version
* 1.0.6.
*/
public Number getMaximumVerticalDataValue() {
return new Double(this.upperBound);
}
/**
* Returns the data range.
*
* @param axis the axis.
*
* @return The range of data displayed.
*/
public Range getDataRange(ValueAxis axis) {
return new Range(this.lowerBound, this.upperBound);
}
/**
* Sets the axis range to the current values in the rangeInfo array.
*/
protected void setAxisRange() {
if ((this.subrange >= 0) && (this.followDataInSubranges)) {
this.rangeAxis.setRange(
new Range(this.subrangeInfo[this.subrange][DISPLAY_LOW],
this.subrangeInfo[this.subrange][DISPLAY_HIGH]));
}
else {
this.rangeAxis.setRange(this.lowerBound, this.upperBound);
}
}
/**
* Returns the legend items for the plot.
*
* @return <code>null.
*/
public LegendItemCollection getLegendItems() {
return null;
}
/**
* Returns the orientation of the plot.
*
* @return The orientation (always {@link PlotOrientation#VERTICAL}).
*/
public PlotOrientation getOrientation() {
return PlotOrientation.VERTICAL;
}
/**
* Determine whether a number is valid and finite.
*
* @param d the number to be tested.
*
* @return <code>true if the number is valid and finite, and
* <code>false otherwise.
*/
protected static boolean isValidNumber(double d) {
return (!(Double.isNaN(d) || Double.isInfinite(d)));
}
/**
* Returns true if the value is in the specified range, and false otherwise.
*
* @param subrange the subrange.
* @param value the value to check.
*
* @return A boolean.
*/
private boolean inSubrange(int subrange, double value) {
return (value > this.subrangeInfo[subrange][RANGE_LOW]
&& value <= this.subrangeInfo[subrange][RANGE_HIGH]);
}
/**
* Returns the mercury paint corresponding to the current data value.
* Called from the {@link #draw(Graphics2D, Rectangle2D, Point2D,
* PlotState, PlotRenderingInfo)} method.
*
* @return The paint (never <code>null).
*/
private Paint getCurrentPaint() {
Paint result = this.mercuryPaint;
if (this.useSubrangePaint) {
double value = this.dataset.getValue().doubleValue();
if (inSubrange(NORMAL, value)) {
result = this.subrangePaint[NORMAL];
}
else if (inSubrange(WARNING, value)) {
result = this.subrangePaint[WARNING];
}
else if (inSubrange(CRITICAL, value)) {
result = this.subrangePaint[CRITICAL];
}
}
return result;
}
/**
* Tests this plot for equality with another object. The plot's dataset
* is not considered in the test.
*
* @param obj the object (<code>null permitted).
*
* @return <code>true or
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