📄 chartfactory.java
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* Creates a pie chart with default settings.
* <P>
* The chart object returned by this method uses a {@link PiePlot} instance
* as the plot.
*
* @param title the chart title (<code>null</code> permitted).
* @param dataset the dataset for the chart (<code>null</code> permitted).
* @param legend a flag specifying whether or not a legend is required.
* @param tooltips configure chart to generate tool tips?
* @param urls configure chart to generate URLs?
*
* @return A pie chart.
*/
public static JFreeChart createPieChart(String title,
PieDataset dataset,
boolean legend,
boolean tooltips,
boolean urls) {
PiePlot plot = new PiePlot(dataset);
plot.setLabelGenerator(new StandardPieSectionLabelGenerator());
plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));
if (tooltips) {
plot.setToolTipGenerator(new StandardPieToolTipGenerator());
}
if (urls) {
plot.setURLGenerator(new StandardPieURLGenerator());
}
JFreeChart chart = new JFreeChart(title, JFreeChart.DEFAULT_TITLE_FONT,
plot, legend);
currentTheme.apply(chart);
return chart;
}
/**
* Creates a pie chart with default settings that compares 2 datasets.
* The colour of each section will be determined by the move from the value
* for the same key in <code>previousDataset</code>. ie if value1 > value2
* then the section will be in green (unless <code>greenForIncrease</code>
* is <code>false</code>, in which case it would be <code>red</code>).
* Each section can have a shade of red or green as the difference can be
* tailored between 0% (black) and percentDiffForMaxScale% (bright
* red/green).
* <p>
* For instance if <code>percentDiffForMaxScale</code> is 10 (10%), a
* difference of 5% will have a half shade of red/green, a difference of
* 10% or more will have a maximum shade/brightness of red/green.
* <P>
* The chart object returned by this method uses a {@link PiePlot} instance
* as the plot.
* <p>
* Written by <a href="mailto:opensource@objectlab.co.uk">Benoit
* Xhenseval</a>.
*
* @param title the chart title (<code>null</code> permitted).
* @param dataset the dataset for the chart (<code>null</code> permitted).
* @param previousDataset the dataset for the last run, this will be used
* to compare each key in the dataset
* @param percentDiffForMaxScale scale goes from bright red/green to black,
* percentDiffForMaxScale indicate the change
* required to reach top scale.
* @param greenForIncrease an increase since previousDataset will be
* displayed in green (decrease red) if true.
* @param legend a flag specifying whether or not a legend is required.
* @param tooltips configure chart to generate tool tips?
* @param locale the locale (<code>null</code> not permitted).
* @param subTitle displays a subtitle with colour scheme if true
* @param showDifference create a new dataset that will show the %
* difference between the two datasets.
*
* @return A pie chart.
*
* @since 1.0.7
*/
public static JFreeChart createPieChart(String title, PieDataset dataset,
PieDataset previousDataset, int percentDiffForMaxScale,
boolean greenForIncrease, boolean legend, boolean tooltips,
Locale locale, boolean subTitle, boolean showDifference) {
PiePlot plot = new PiePlot(dataset);
plot.setLabelGenerator(new StandardPieSectionLabelGenerator(locale));
plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));
if (tooltips) {
plot.setToolTipGenerator(new StandardPieToolTipGenerator(locale));
}
List keys = dataset.getKeys();
DefaultPieDataset series = null;
if (showDifference) {
series = new DefaultPieDataset();
}
double colorPerPercent = 255.0 / percentDiffForMaxScale;
for (Iterator it = keys.iterator(); it.hasNext();) {
Comparable key = (Comparable) it.next();
Number newValue = dataset.getValue(key);
Number oldValue = previousDataset.getValue(key);
if (oldValue == null) {
if (greenForIncrease) {
plot.setSectionPaint(key, Color.green);
}
else {
plot.setSectionPaint(key, Color.red);
}
if (showDifference) {
series.setValue(key + " (+100%)", newValue);
}
}
else {
double percentChange = (newValue.doubleValue()
/ oldValue.doubleValue() - 1.0) * 100.0;
double shade
= (Math.abs(percentChange) >= percentDiffForMaxScale ? 255
: Math.abs(percentChange) * colorPerPercent);
if (greenForIncrease
&& newValue.doubleValue() > oldValue.doubleValue()
|| !greenForIncrease && newValue.doubleValue()
< oldValue.doubleValue()) {
plot.setSectionPaint(key, new Color(0, (int) shade, 0));
}
else {
plot.setSectionPaint(key, new Color((int) shade, 0, 0));
}
if (showDifference) {
series.setValue(key + " (" + (percentChange >= 0 ? "+" : "")
+ NumberFormat.getPercentInstance().format(
percentChange / 100.0) + ")", newValue);
}
}
}
if (showDifference) {
plot.setDataset(series);
}
JFreeChart chart = new JFreeChart(title,
JFreeChart.DEFAULT_TITLE_FONT, plot, legend);
if (subTitle) {
TextTitle subtitle = null;
subtitle = new TextTitle("Bright " + (greenForIncrease ? "red"
: "green") + "=change >=-" + percentDiffForMaxScale
+ "%, Bright " + (!greenForIncrease ? "red" : "green")
+ "=change >=+" + percentDiffForMaxScale + "%",
new Font("SansSerif", Font.PLAIN, 10));
chart.addSubtitle(subtitle);
}
currentTheme.apply(chart);
return chart;
}
/**
* Creates a pie chart with default settings that compares 2 datasets.
* The colour of each section will be determined by the move from the value
* for the same key in <code>previousDataset</code>. ie if value1 > value2
* then the section will be in green (unless <code>greenForIncrease</code>
* is <code>false</code>, in which case it would be <code>red</code>).
* Each section can have a shade of red or green as the difference can be
* tailored between 0% (black) and percentDiffForMaxScale% (bright
* red/green).
* <p>
* For instance if <code>percentDiffForMaxScale</code> is 10 (10%), a
* difference of 5% will have a half shade of red/green, a difference of
* 10% or more will have a maximum shade/brightness of red/green.
* <P>
* The chart object returned by this method uses a {@link PiePlot} instance
* as the plot.
* <p>
* Written by <a href="mailto:opensource@objectlab.co.uk">Benoit
* Xhenseval</a>.
*
* @param title the chart title (<code>null</code> permitted).
* @param dataset the dataset for the chart (<code>null</code> permitted).
* @param previousDataset the dataset for the last run, this will be used
* to compare each key in the dataset
* @param percentDiffForMaxScale scale goes from bright red/green to black,
* percentDiffForMaxScale indicate the change
* required to reach top scale.
* @param greenForIncrease an increase since previousDataset will be
* displayed in green (decrease red) if true.
* @param legend a flag specifying whether or not a legend is required.
* @param tooltips configure chart to generate tool tips?
* @param urls configure chart to generate URLs?
* @param subTitle displays a subtitle with colour scheme if true
* @param showDifference create a new dataset that will show the %
* difference between the two datasets.
*
* @return A pie chart.
*/
public static JFreeChart createPieChart(String title,
PieDataset dataset,
PieDataset previousDataset,
int percentDiffForMaxScale,
boolean greenForIncrease,
boolean legend,
boolean tooltips,
boolean urls,
boolean subTitle,
boolean showDifference) {
PiePlot plot = new PiePlot(dataset);
plot.setLabelGenerator(new StandardPieSectionLabelGenerator());
plot.setInsets(new RectangleInsets(0.0, 5.0, 5.0, 5.0));
if (tooltips) {
plot.setToolTipGenerator(new StandardPieToolTipGenerator());
}
if (urls) {
plot.setURLGenerator(new StandardPieURLGenerator());
}
List keys = dataset.getKeys();
DefaultPieDataset series = null;
if (showDifference) {
series = new DefaultPieDataset();
}
double colorPerPercent = 255.0 / percentDiffForMaxScale;
for (Iterator it = keys.iterator(); it.hasNext();) {
Comparable key = (Comparable) it.next();
Number newValue = dataset.getValue(key);
Number oldValue = previousDataset.getValue(key);
if (oldValue == null) {
if (greenForIncrease) {
plot.setSectionPaint(key, Color.green);
}
else {
plot.setSectionPaint(key, Color.red);
}
if (showDifference) {
series.setValue(key + " (+100%)", newValue);
}
}
else {
double percentChange = (newValue.doubleValue()
/ oldValue.doubleValue() - 1.0) * 100.0;
double shade
= (Math.abs(percentChange) >= percentDiffForMaxScale ? 255
: Math.abs(percentChange) * colorPerPercent);
if (greenForIncrease
&& newValue.doubleValue() > oldValue.doubleValue()
|| !greenForIncrease && newValue.doubleValue()
< oldValue.doubleValue()) {
plot.setSectionPaint(key, new Color(0, (int) shade, 0));
}
else {
plot.setSectionPaint(key, new Color((int) shade, 0, 0));
}
if (showDifference) {
series.setValue(key + " (" + (percentChange >= 0 ? "+" : "")
+ NumberFormat.getPercentInstance().format(
percentChange / 100.0) + ")", newValue);
}
}
}
if (showDifference) {
plot.setDataset(series);
}
JFreeChart chart = new JFreeChart(title,
JFreeChart.DEFAULT_TITLE_FONT, plot, legend);
if (subTitle) {
TextTitle subtitle = null;
subtitle = new TextTitle("Bright " + (greenForIncrease ? "red"
: "green") + "=change >=-" + percentDiffForMaxScale
+ "%, Bright " + (!greenForIncrease ? "red" : "green")
+ "=change >=+" + percentDiffForMaxScale + "%",
new Font("SansSerif", Font.PLAIN, 10));
chart.addSubtitle(subtitle);
}
currentTheme.apply(chart);
return chart;
}
/**
* Creates a ring chart with default settings.
* <P>
* The chart object returned by this method uses a {@link RingPlot}
* instance as the plot.
*
* @param title the chart title (<code>null</code> permitted).
* @param dataset the dataset for the chart (<code>null</code> permitted).
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