AbstractXYItemRenderer.java
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2021, by David Gilbert 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------------------
* AbstractXYItemRenderer.java
* ---------------------------
* (C) Copyright 2002-2021, by David Gilbert and Contributors.
*
* Original Author: David Gilbert;
* Contributor(s): Richard Atkinson;
* Focus Computer Services Limited;
* Tim Bardzil;
* Sergei Ivanov;
* Peter Kolb (patch 2809117);
* Martin Krauskopf;
*/
package org.jfree.chart.renderer.xy;
import java.awt.AlphaComposite;
import java.awt.Composite;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.RenderingHints;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Ellipse2D;
import java.awt.geom.GeneralPath;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import org.jfree.chart.legend.LegendItem;
import org.jfree.chart.legend.LegendItemCollection;
import org.jfree.chart.annotations.Annotation;
import org.jfree.chart.annotations.XYAnnotation;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.entity.XYItemEntity;
import org.jfree.chart.event.AnnotationChangeEvent;
import org.jfree.chart.event.AnnotationChangeListener;
import org.jfree.chart.event.RendererChangeEvent;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardXYSeriesLabelGenerator;
import org.jfree.chart.labels.XYItemLabelGenerator;
import org.jfree.chart.labels.XYSeriesLabelGenerator;
import org.jfree.chart.labels.XYToolTipGenerator;
import org.jfree.chart.plot.CrosshairState;
import org.jfree.chart.plot.DrawingSupplier;
import org.jfree.chart.plot.IntervalMarker;
import org.jfree.chart.plot.Marker;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.ValueMarker;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.AbstractRenderer;
import org.jfree.chart.text.TextUtils;
import org.jfree.chart.util.GradientPaintTransformer;
import org.jfree.chart.api.Layer;
import org.jfree.chart.api.LengthAdjustmentType;
import org.jfree.chart.api.RectangleAnchor;
import org.jfree.chart.api.RectangleInsets;
import org.jfree.chart.urls.XYURLGenerator;
import org.jfree.chart.internal.Args;
import org.jfree.chart.internal.CloneUtils;
import org.jfree.data.Range;
import org.jfree.data.general.DatasetUtils;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYItemKey;
/**
* A base class that can be used to create new {@link XYItemRenderer}
* implementations.
*
* <b>Subclassing</b>
* If you create your own subclass of this renderer, please refer to the
* Javadocs for {@link AbstractRenderer} for important information about
* cloning.
*/
public abstract class AbstractXYItemRenderer extends AbstractRenderer
implements XYItemRenderer, AnnotationChangeListener,
Cloneable, Serializable {
/** For serialization. */
private static final long serialVersionUID = 8019124836026607990L;
/** The plot. */
private XYPlot plot;
/** A list of item label generators (one per series). */
private Map<Integer, XYItemLabelGenerator> itemLabelGeneratorMap;
/** The default item label generator. */
private XYItemLabelGenerator defaultItemLabelGenerator;
/** A list of tool tip generators (one per series). */
private Map<Integer, XYToolTipGenerator> toolTipGeneratorMap;
/** The default tool tip generator. */
private XYToolTipGenerator defaultToolTipGenerator;
/** The URL text generator. */
private XYURLGenerator urlGenerator;
/**
* Annotations to be drawn in the background layer ('underneath' the data
* items).
*/
private List<XYAnnotation> backgroundAnnotations;
/**
* Annotations to be drawn in the foreground layer ('on top' of the data
* items).
*/
private List<XYAnnotation> foregroundAnnotations;
/** The legend item label generator. */
private XYSeriesLabelGenerator legendItemLabelGenerator;
/** The legend item tool tip generator. */
private XYSeriesLabelGenerator legendItemToolTipGenerator;
/** The legend item URL generator. */
private XYSeriesLabelGenerator legendItemURLGenerator;
/**
* Creates a renderer where the tooltip generator and the URL generator are
* both {@code null}.
*/
protected AbstractXYItemRenderer() {
super();
this.itemLabelGeneratorMap = new HashMap<>();
this.toolTipGeneratorMap = new HashMap<>();
this.urlGenerator = null;
this.backgroundAnnotations = new ArrayList<>();
this.foregroundAnnotations = new ArrayList<>();
this.legendItemLabelGenerator = new StandardXYSeriesLabelGenerator("{0}");
}
/**
* Returns the number of passes through the data that the renderer requires
* in order to draw the chart. Most charts will require a single pass, but
* some require two passes.
*
* @return The pass count.
*/
@Override
public int getPassCount() {
return 1;
}
/**
* Returns the plot that the renderer is assigned to.
*
* @return The plot (possibly {@code null}).
*/
@Override
public XYPlot getPlot() {
return this.plot;
}
/**
* Sets the plot that the renderer is assigned to.
*
* @param plot the plot ({@code null} permitted).
*/
@Override
public void setPlot(XYPlot plot) {
this.plot = plot;
}
/**
* Initialises the renderer and returns a state object that should be
* passed to all subsequent calls to the drawItem() method.
* <P>
* This method will be called before the first item is rendered, giving the
* renderer an opportunity to initialise any state information it wants to
* maintain. The renderer can do nothing if it chooses.
*
* @param g2 the graphics device.
* @param dataArea the area inside the axes.
* @param plot the plot.
* @param dataset the dataset.
* @param info an optional info collection object to return data back to
* the caller.
*
* @return The renderer state (never {@code null}).
*/
@Override
public XYItemRendererState initialise(Graphics2D g2, Rectangle2D dataArea,
XYPlot plot, XYDataset dataset, PlotRenderingInfo info) {
return new XYItemRendererState(info);
}
/**
* Adds a {@code KEY_BEGIN_ELEMENT} hint to the graphics target. This
* hint is recognised by <b>JFreeSVG</b> (in theory it could be used by
* other {@code Graphics2D} implementations also).
*
* @param g2 the graphics target ({@code null} not permitted).
* @param seriesKey the series key that identifies the element
* ({@code null} not permitted).
* @param itemIndex the item index.
*/
protected void beginElementGroup(Graphics2D g2, Comparable seriesKey,
int itemIndex) {
beginElementGroup(g2, new XYItemKey(seriesKey, itemIndex));
}
// ITEM LABEL GENERATOR
/**
* Returns the label generator for a data item. This implementation simply
* passes control to the {@link #getSeriesItemLabelGenerator(int)} method.
* If, for some reason, you want a different generator for individual
* items, you can override this method.
*
* @param series the series index (zero based).
* @param item the item index (zero based).
*
* @return The generator (possibly {@code null}).
*/
@Override
public XYItemLabelGenerator getItemLabelGenerator(int series, int item) {
// otherwise look up the generator table
XYItemLabelGenerator generator
= (XYItemLabelGenerator) this.itemLabelGeneratorMap.get(series);
if (generator == null) {
generator = this.defaultItemLabelGenerator;
}
return generator;
}
/**
* Returns the item label generator for a series.
*
* @param series the series index (zero based).
*
* @return The generator (possibly {@code null}).
*/
@Override
public XYItemLabelGenerator getSeriesItemLabelGenerator(int series) {
return this.itemLabelGeneratorMap.get(series);
}
/**
* Sets the item label generator for a series and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param series the series index (zero based).
* @param generator the generator ({@code null} permitted).
*/
@Override
public void setSeriesItemLabelGenerator(int series,
XYItemLabelGenerator generator) {
this.itemLabelGeneratorMap.put(series, generator);
fireChangeEvent();
}
/**
* Returns the default item label generator.
*
* @return The generator (possibly {@code null}).
*/
@Override
public XYItemLabelGenerator getDefaultItemLabelGenerator() {
return this.defaultItemLabelGenerator;
}
/**
* Sets the default item label generator and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param generator the generator ({@code null} permitted).
*/
@Override
public void setDefaultItemLabelGenerator(XYItemLabelGenerator generator) {
this.defaultItemLabelGenerator = generator;
fireChangeEvent();
}
// TOOL TIP GENERATOR
/**
* Returns the tool tip generator for a data item. If, for some reason,
* you want a different generator for individual items, you can override
* this method.
*
* @param series the series index (zero based).
* @param item the item index (zero based).
*
* @return The generator (possibly {@code null}).
*/
@Override
public XYToolTipGenerator getToolTipGenerator(int series, int item) {
// otherwise look up the generator table
XYToolTipGenerator generator
= (XYToolTipGenerator) this.toolTipGeneratorMap.get(series);
if (generator == null) {
generator = this.defaultToolTipGenerator;
}
return generator;
}
/**
* Returns the tool tip generator for a series.
*
* @param series the series index (zero based).
*
* @return The generator (possibly {@code null}).
*/
@Override
public XYToolTipGenerator getSeriesToolTipGenerator(int series) {
return this.toolTipGeneratorMap.get(series);
}
/**
* Sets the tool tip generator for a series and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param series the series index (zero based).
* @param generator the generator ({@code null} permitted).
*/
@Override
public void setSeriesToolTipGenerator(int series,
XYToolTipGenerator generator) {
this.toolTipGeneratorMap.put(series, generator);
fireChangeEvent();
}
/**
* Returns the default tool tip generator.
*
* @return The generator (possibly {@code null}).
*
* @see #setDefaultToolTipGenerator(XYToolTipGenerator)
*/
@Override
public XYToolTipGenerator getDefaultToolTipGenerator() {
return this.defaultToolTipGenerator;
}
/**
* Sets the default tool tip generator and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param generator the generator ({@code null} permitted).
*
* @see #getDefaultToolTipGenerator()
*/
@Override
public void setDefaultToolTipGenerator(XYToolTipGenerator generator) {
this.defaultToolTipGenerator = generator;
fireChangeEvent();
}
// URL GENERATOR
/**
* Returns the URL generator for HTML image maps.
*
* @return The URL generator (possibly {@code null}).
*/
@Override
public XYURLGenerator getURLGenerator() {
return this.urlGenerator;
}
/**
* Sets the URL generator for HTML image maps and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param urlGenerator the URL generator ({@code null} permitted).
*/
@Override
public void setURLGenerator(XYURLGenerator urlGenerator) {
this.urlGenerator = urlGenerator;
fireChangeEvent();
}
/**
* Adds an annotation and sends a {@link RendererChangeEvent} to all
* registered listeners. The annotation is added to the foreground
* layer.
*
* @param annotation the annotation ({@code null} not permitted).
*/
@Override
public void addAnnotation(XYAnnotation annotation) {
// defer argument checking
addAnnotation(annotation, Layer.FOREGROUND);
}
/**
* Adds an annotation to the specified layer and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param annotation the annotation ({@code null} not permitted).
* @param layer the layer ({@code null} not permitted).
*/
@Override
public void addAnnotation(XYAnnotation annotation, Layer layer) {
Args.nullNotPermitted(annotation, "annotation");
Args.nullNotPermitted(layer, "layer");
switch (layer) {
case FOREGROUND:
this.foregroundAnnotations.add(annotation);
annotation.addChangeListener(this);
fireChangeEvent();
break;
case BACKGROUND:
this.backgroundAnnotations.add(annotation);
annotation.addChangeListener(this);
fireChangeEvent();
break;
default:
// should never get here
throw new RuntimeException("Unknown layer.");
}
}
/**
* Removes the specified annotation and sends a {@link RendererChangeEvent}
* to all registered listeners.
*
* @param annotation the annotation to remove ({@code null} not
* permitted).
*
* @return A boolean to indicate whether or not the annotation was
* successfully removed.
*/
@Override
public boolean removeAnnotation(XYAnnotation annotation) {
boolean removed = this.foregroundAnnotations.remove(annotation);
removed = removed & this.backgroundAnnotations.remove(annotation);
annotation.removeChangeListener(this);
fireChangeEvent();
return removed;
}
/**
* Removes all annotations and sends a {@link RendererChangeEvent}
* to all registered listeners.
*/
@Override
public void removeAnnotations() {
for (XYAnnotation annotation : this.foregroundAnnotations) {
annotation.removeChangeListener(this);
}
for (XYAnnotation annotation : this.backgroundAnnotations) {
annotation.removeChangeListener(this);
}
this.foregroundAnnotations.clear();
this.backgroundAnnotations.clear();
fireChangeEvent();
}
/**
* Receives notification of a change to an {@link Annotation} added to
* this renderer.
*
* @param event information about the event (not used here).
*/
@Override
public void annotationChanged(AnnotationChangeEvent event) {
fireChangeEvent();
}
/**
* Returns a collection of the annotations that are assigned to the
* renderer.
*
* @return A collection of annotations (possibly empty but never
* {@code null}).
*/
@Override
public Collection<XYAnnotation> getAnnotations() {
List<XYAnnotation> result = new ArrayList<>(this.foregroundAnnotations);
result.addAll(this.backgroundAnnotations);
return result;
}
/**
* Returns the legend item label generator.
*
* @return The label generator (never {@code null}).
*
* @see #setLegendItemLabelGenerator(XYSeriesLabelGenerator)
*/
@Override
public XYSeriesLabelGenerator getLegendItemLabelGenerator() {
return this.legendItemLabelGenerator;
}
/**
* Sets the legend item label generator and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param generator the generator ({@code null} not permitted).
*
* @see #getLegendItemLabelGenerator()
*/
@Override
public void setLegendItemLabelGenerator(XYSeriesLabelGenerator generator) {
Args.nullNotPermitted(generator, "generator");
this.legendItemLabelGenerator = generator;
fireChangeEvent();
}
/**
* Returns the legend item tool tip generator.
*
* @return The tool tip generator (possibly {@code null}).
*
* @see #setLegendItemToolTipGenerator(XYSeriesLabelGenerator)
*/
public XYSeriesLabelGenerator getLegendItemToolTipGenerator() {
return this.legendItemToolTipGenerator;
}
/**
* Sets the legend item tool tip generator and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param generator the generator ({@code null} permitted).
*
* @see #getLegendItemToolTipGenerator()
*/
public void setLegendItemToolTipGenerator(
XYSeriesLabelGenerator generator) {
this.legendItemToolTipGenerator = generator;
fireChangeEvent();
}
/**
* Returns the legend item URL generator.
*
* @return The URL generator (possibly {@code null}).
*
* @see #setLegendItemURLGenerator(XYSeriesLabelGenerator)
*/
public XYSeriesLabelGenerator getLegendItemURLGenerator() {
return this.legendItemURLGenerator;
}
/**
* Sets the legend item URL generator and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param generator the generator ({@code null} permitted).
*
* @see #getLegendItemURLGenerator()
*/
public void setLegendItemURLGenerator(XYSeriesLabelGenerator generator) {
this.legendItemURLGenerator = generator;
fireChangeEvent();
}
/**
* Returns the lower and upper bounds (range) of the x-values in the
* specified dataset.
*
* @param dataset the dataset ({@code null} permitted).
*
* @return The range ({@code null} if the dataset is {@code null}
* or empty).
*
* @see #findRangeBounds(XYDataset)
*/
@Override
public Range findDomainBounds(XYDataset dataset) {
return findDomainBounds(dataset, false);
}
/**
* Returns the lower and upper bounds (range) of the x-values in the
* specified dataset.
*
* @param dataset the dataset ({@code null} permitted).
* @param includeInterval include the interval (if any) for the dataset?
*
* @return The range ({@code null} if the dataset is {@code null}
* or empty).
*/
protected Range findDomainBounds(XYDataset dataset,
boolean includeInterval) {
if (dataset == null) {
return null;
}
if (getDataBoundsIncludesVisibleSeriesOnly()) {
List visibleSeriesKeys = new ArrayList();
int seriesCount = dataset.getSeriesCount();
for (int s = 0; s < seriesCount; s++) {
if (isSeriesVisible(s)) {
visibleSeriesKeys.add(dataset.getSeriesKey(s));
}
}
return DatasetUtils.findDomainBounds(dataset,
visibleSeriesKeys, includeInterval);
}
return DatasetUtils.findDomainBounds(dataset, includeInterval);
}
/**
* Returns the range of values the renderer requires to display all the
* items from the specified dataset.
*
* @param dataset the dataset ({@code null} permitted).
*
* @return The range ({@code null} if the dataset is {@code null}
* or empty).
*
* @see #findDomainBounds(XYDataset)
*/
@Override
public Range findRangeBounds(XYDataset dataset) {
return findRangeBounds(dataset, false);
}
/**
* Returns the range of values the renderer requires to display all the
* items from the specified dataset.
*
* @param dataset the dataset ({@code null} permitted).
* @param includeInterval include the interval (if any) for the dataset?
*
* @return The range ({@code null} if the dataset is {@code null}
* or empty).
*/
protected Range findRangeBounds(XYDataset dataset,
boolean includeInterval) {
if (dataset == null) {
return null;
}
if (getDataBoundsIncludesVisibleSeriesOnly()) {
List visibleSeriesKeys = new ArrayList();
int seriesCount = dataset.getSeriesCount();
for (int s = 0; s < seriesCount; s++) {
if (isSeriesVisible(s)) {
visibleSeriesKeys.add(dataset.getSeriesKey(s));
}
}
// the bounds should be calculated using just the items within
// the current range of the x-axis...if there is one
Range xRange = null;
XYPlot p = getPlot();
if (p != null) {
ValueAxis xAxis = null;
int index = p.getIndexOf(this);
if (index >= 0) {
xAxis = this.plot.getDomainAxisForDataset(index);
}
if (xAxis != null) {
xRange = xAxis.getRange();
}
}
if (xRange == null) {
xRange = new Range(Double.NEGATIVE_INFINITY,
Double.POSITIVE_INFINITY);
}
return DatasetUtils.findRangeBounds(dataset,
visibleSeriesKeys, xRange, includeInterval);
}
return DatasetUtils.findRangeBounds(dataset, includeInterval);
}
/**
* Returns a (possibly empty) collection of legend items for the series
* that this renderer is responsible for drawing.
*
* @return The legend item collection (never {@code null}).
*/
@Override
public LegendItemCollection getLegendItems() {
if (this.plot == null) {
return new LegendItemCollection();
}
LegendItemCollection result = new LegendItemCollection();
int index = this.plot.getIndexOf(this);
XYDataset dataset = this.plot.getDataset(index);
if (dataset != null) {
int seriesCount = dataset.getSeriesCount();
for (int i = 0; i < seriesCount; i++) {
if (isSeriesVisibleInLegend(i)) {
LegendItem item = getLegendItem(index, i);
if (item != null) {
result.add(item);
}
}
}
}
return result;
}
/**
* Returns a default legend item for the specified series. Subclasses
* should override this method to generate customised items.
*
* @param datasetIndex the dataset index (zero-based).
* @param series the series index (zero-based).
*
* @return A legend item for the series.
*/
@Override
public LegendItem getLegendItem(int datasetIndex, int series) {
XYPlot xyplot = getPlot();
if (xyplot == null) {
return null;
}
XYDataset dataset = xyplot.getDataset(datasetIndex);
if (dataset == null) {
return null;
}
String label = this.legendItemLabelGenerator.generateLabel(dataset,
series);
String description = label;
String toolTipText = null;
if (getLegendItemToolTipGenerator() != null) {
toolTipText = getLegendItemToolTipGenerator().generateLabel(
dataset, series);
}
String urlText = null;
if (getLegendItemURLGenerator() != null) {
urlText = getLegendItemURLGenerator().generateLabel(dataset,
series);
}
Shape shape = lookupLegendShape(series);
Paint paint = lookupSeriesPaint(series);
LegendItem item = new LegendItem(label, paint);
item.setToolTipText(toolTipText);
item.setURLText(urlText);
item.setLabelFont(lookupLegendTextFont(series));
Paint labelPaint = lookupLegendTextPaint(series);
if (labelPaint != null) {
item.setLabelPaint(labelPaint);
}
item.setSeriesKey(dataset.getSeriesKey(series));
item.setSeriesIndex(series);
item.setDataset(dataset);
item.setDatasetIndex(datasetIndex);
if (getTreatLegendShapeAsLine()) {
item.setLineVisible(true);
item.setLine(shape);
item.setLinePaint(paint);
item.setShapeVisible(false);
} else {
Paint outlinePaint = lookupSeriesOutlinePaint(series);
Stroke outlineStroke = lookupSeriesOutlineStroke(series);
item.setOutlinePaint(outlinePaint);
item.setOutlineStroke(outlineStroke);
}
return item;
}
/**
* Fills a band between two values on the axis. This can be used to color
* bands between the grid lines.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param axis the domain axis.
* @param dataArea the data area.
* @param start the start value.
* @param end the end value.
*/
@Override
public void fillDomainGridBand(Graphics2D g2, XYPlot plot, ValueAxis axis,
Rectangle2D dataArea, double start, double end) {
double x1 = axis.valueToJava2D(start, dataArea,
plot.getDomainAxisEdge());
double x2 = axis.valueToJava2D(end, dataArea,
plot.getDomainAxisEdge());
Rectangle2D band;
if (plot.getOrientation() == PlotOrientation.VERTICAL) {
band = new Rectangle2D.Double(Math.min(x1, x2), dataArea.getMinY(),
Math.abs(x2 - x1), dataArea.getHeight());
}
else {
band = new Rectangle2D.Double(dataArea.getMinX(), Math.min(x1, x2),
dataArea.getWidth(), Math.abs(x2 - x1));
}
Paint paint = plot.getDomainTickBandPaint();
if (paint != null) {
g2.setPaint(paint);
g2.fill(band);
}
}
/**
* Fills a band between two values on the range axis. This can be used to
* color bands between the grid lines.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param axis the range axis.
* @param dataArea the data area.
* @param start the start value.
* @param end the end value.
*/
@Override
public void fillRangeGridBand(Graphics2D g2, XYPlot plot, ValueAxis axis,
Rectangle2D dataArea, double start, double end) {
double y1 = axis.valueToJava2D(start, dataArea,
plot.getRangeAxisEdge());
double y2 = axis.valueToJava2D(end, dataArea, plot.getRangeAxisEdge());
Rectangle2D band;
if (plot.getOrientation() == PlotOrientation.VERTICAL) {
band = new Rectangle2D.Double(dataArea.getMinX(), Math.min(y1, y2),
dataArea.getWidth(), Math.abs(y2 - y1));
}
else {
band = new Rectangle2D.Double(Math.min(y1, y2), dataArea.getMinY(),
Math.abs(y2 - y1), dataArea.getHeight());
}
Paint paint = plot.getRangeTickBandPaint();
if (paint != null) {
g2.setPaint(paint);
g2.fill(band);
}
}
/**
* Draws a line perpendicular to the domain axis.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param axis the value axis.
* @param dataArea the area for plotting data.
* @param value the value at which the grid line should be drawn.
* @param paint the paint ({@code null} not permitted).
* @param stroke the stroke ({@code null} not permitted).
*/
@Override
public void drawDomainLine(Graphics2D g2, XYPlot plot, ValueAxis axis,
Rectangle2D dataArea, double value, Paint paint, Stroke stroke) {
Range range = axis.getRange();
if (!range.contains(value)) {
return;
}
PlotOrientation orientation = plot.getOrientation();
Line2D line = null;
double v = axis.valueToJava2D(value, dataArea,
plot.getDomainAxisEdge());
if (orientation.isHorizontal()) {
line = new Line2D.Double(dataArea.getMinX(), v, dataArea.getMaxX(),
v);
} else if (orientation.isVertical()) {
line = new Line2D.Double(v, dataArea.getMinY(), v,
dataArea.getMaxY());
}
g2.setPaint(paint);
g2.setStroke(stroke);
Object saved = g2.getRenderingHint(RenderingHints.KEY_STROKE_CONTROL);
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
RenderingHints.VALUE_STROKE_NORMALIZE);
g2.draw(line);
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, saved);
}
/**
* Draws a line perpendicular to the range axis.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param axis the value axis.
* @param dataArea the area for plotting data.
* @param value the value at which the grid line should be drawn.
* @param paint the paint.
* @param stroke the stroke.
*/
@Override
public void drawRangeLine(Graphics2D g2, XYPlot plot, ValueAxis axis,
Rectangle2D dataArea, double value, Paint paint, Stroke stroke) {
Range range = axis.getRange();
if (!range.contains(value)) {
return;
}
PlotOrientation orientation = plot.getOrientation();
Line2D line = null;
double v = axis.valueToJava2D(value, dataArea, plot.getRangeAxisEdge());
if (orientation == PlotOrientation.HORIZONTAL) {
line = new Line2D.Double(v, dataArea.getMinY(), v,
dataArea.getMaxY());
} else if (orientation == PlotOrientation.VERTICAL) {
line = new Line2D.Double(dataArea.getMinX(), v,
dataArea.getMaxX(), v);
}
g2.setPaint(paint);
g2.setStroke(stroke);
Object saved = g2.getRenderingHint(RenderingHints.KEY_STROKE_CONTROL);
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL,
RenderingHints.VALUE_STROKE_NORMALIZE);
g2.draw(line);
g2.setRenderingHint(RenderingHints.KEY_STROKE_CONTROL, saved);
}
/**
* Draws a line on the chart perpendicular to the x-axis to mark
* a value or range of values.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param domainAxis the domain axis.
* @param marker the marker line.
* @param dataArea the axis data area.
*/
@Override
public void drawDomainMarker(Graphics2D g2, XYPlot plot,
ValueAxis domainAxis, Marker marker, Rectangle2D dataArea) {
if (marker instanceof ValueMarker) {
ValueMarker vm = (ValueMarker) marker;
double value = vm.getValue();
Range range = domainAxis.getRange();
if (!range.contains(value)) {
return;
}
double v = domainAxis.valueToJava2D(value, dataArea,
plot.getDomainAxisEdge());
PlotOrientation orientation = plot.getOrientation();
Line2D line = null;
switch (orientation) {
case HORIZONTAL:
line = new Line2D.Double(dataArea.getMinX(), v,
dataArea.getMaxX(), v);
break;
case VERTICAL:
line = new Line2D.Double(v, dataArea.getMinY(), v,
dataArea.getMaxY());
break;
default:
throw new IllegalStateException("Unrecognised orientation.");
}
final Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, marker.getAlpha()));
g2.setPaint(marker.getPaint());
g2.setStroke(marker.getStroke());
g2.draw(line);
String label = marker.getLabel();
RectangleAnchor anchor = marker.getLabelAnchor();
if (label != null) {
Font labelFont = marker.getLabelFont();
g2.setFont(labelFont);
Point2D coords = calculateDomainMarkerTextAnchorPoint(
g2, orientation, dataArea, line.getBounds2D(),
marker.getLabelOffset(),
LengthAdjustmentType.EXPAND, anchor);
Rectangle2D r = TextUtils.calcAlignedStringBounds(label,
g2, (float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
g2.setPaint(marker.getLabelBackgroundColor());
g2.fill(r);
g2.setPaint(marker.getLabelPaint());
TextUtils.drawAlignedString(label, g2,
(float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
}
g2.setComposite(originalComposite);
} else if (marker instanceof IntervalMarker) {
IntervalMarker im = (IntervalMarker) marker;
double start = im.getStartValue();
double end = im.getEndValue();
Range range = domainAxis.getRange();
if (!(range.intersects(start, end))) {
return;
}
double start2d = domainAxis.valueToJava2D(start, dataArea,
plot.getDomainAxisEdge());
double end2d = domainAxis.valueToJava2D(end, dataArea,
plot.getDomainAxisEdge());
double low = Math.min(start2d, end2d);
double high = Math.max(start2d, end2d);
PlotOrientation orientation = plot.getOrientation();
Rectangle2D rect = null;
if (orientation == PlotOrientation.HORIZONTAL) {
// clip top and bottom bounds to data area
low = Math.max(low, dataArea.getMinY());
high = Math.min(high, dataArea.getMaxY());
rect = new Rectangle2D.Double(dataArea.getMinX(),
low, dataArea.getWidth(),
high - low);
} else if (orientation == PlotOrientation.VERTICAL) {
// clip left and right bounds to data area
low = Math.max(low, dataArea.getMinX());
high = Math.min(high, dataArea.getMaxX());
rect = new Rectangle2D.Double(low,
dataArea.getMinY(), high - low,
dataArea.getHeight());
}
final Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, marker.getAlpha()));
Paint p = marker.getPaint();
if (p instanceof GradientPaint) {
GradientPaint gp = (GradientPaint) p;
GradientPaintTransformer t = im.getGradientPaintTransformer();
if (t != null) {
gp = t.transform(gp, rect);
}
g2.setPaint(gp);
} else {
g2.setPaint(p);
}
g2.fill(rect);
// now draw the outlines, if visible...
if (im.getOutlinePaint() != null && im.getOutlineStroke() != null) {
if (orientation == PlotOrientation.VERTICAL) {
Line2D line = new Line2D.Double();
double y0 = dataArea.getMinY();
double y1 = dataArea.getMaxY();
g2.setPaint(im.getOutlinePaint());
g2.setStroke(im.getOutlineStroke());
if (range.contains(start)) {
line.setLine(start2d, y0, start2d, y1);
g2.draw(line);
}
if (range.contains(end)) {
line.setLine(end2d, y0, end2d, y1);
g2.draw(line);
}
} else { // PlotOrientation.HORIZONTAL
Line2D line = new Line2D.Double();
double x0 = dataArea.getMinX();
double x1 = dataArea.getMaxX();
g2.setPaint(im.getOutlinePaint());
g2.setStroke(im.getOutlineStroke());
if (range.contains(start)) {
line.setLine(x0, start2d, x1, start2d);
g2.draw(line);
}
if (range.contains(end)) {
line.setLine(x0, end2d, x1, end2d);
g2.draw(line);
}
}
}
String label = marker.getLabel();
RectangleAnchor anchor = marker.getLabelAnchor();
if (label != null) {
Font labelFont = marker.getLabelFont();
g2.setFont(labelFont);
Point2D coords = calculateDomainMarkerTextAnchorPoint(
g2, orientation, dataArea, rect,
marker.getLabelOffset(), marker.getLabelOffsetType(),
anchor);
Rectangle2D r = TextUtils.calcAlignedStringBounds(label,
g2, (float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
g2.setPaint(marker.getLabelBackgroundColor());
g2.fill(r);
g2.setPaint(marker.getLabelPaint());
TextUtils.drawAlignedString(label, g2,
(float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
}
g2.setComposite(originalComposite);
}
}
/**
* Calculates the {@code (x, y)} coordinates for drawing a marker label.
*
* @param g2 the graphics device.
* @param orientation the plot orientation.
* @param dataArea the data area.
* @param markerArea the rectangle surrounding the marker area.
* @param markerOffset the marker label offset.
* @param labelOffsetType the label offset type.
* @param anchor the label anchor.
*
* @return The coordinates for drawing the marker label.
*/
protected Point2D calculateDomainMarkerTextAnchorPoint(Graphics2D g2,
PlotOrientation orientation, Rectangle2D dataArea,
Rectangle2D markerArea, RectangleInsets markerOffset,
LengthAdjustmentType labelOffsetType, RectangleAnchor anchor) {
Rectangle2D anchorRect = null;
if (orientation == PlotOrientation.HORIZONTAL) {
anchorRect = markerOffset.createAdjustedRectangle(markerArea,
LengthAdjustmentType.CONTRACT, labelOffsetType);
}
else if (orientation == PlotOrientation.VERTICAL) {
anchorRect = markerOffset.createAdjustedRectangle(markerArea,
labelOffsetType, LengthAdjustmentType.CONTRACT);
}
return anchor.getAnchorPoint(anchorRect);
}
/**
* Draws a line on the chart perpendicular to the y-axis to mark a value
* or range of values.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param rangeAxis the range axis.
* @param marker the marker line.
* @param dataArea the axis data area.
*/
@Override
public void drawRangeMarker(Graphics2D g2, XYPlot plot, ValueAxis rangeAxis,
Marker marker, Rectangle2D dataArea) {
if (marker instanceof ValueMarker) {
ValueMarker vm = (ValueMarker) marker;
double value = vm.getValue();
Range range = rangeAxis.getRange();
if (!range.contains(value)) {
return;
}
double v = rangeAxis.valueToJava2D(value, dataArea,
plot.getRangeAxisEdge());
PlotOrientation orientation = plot.getOrientation();
Line2D line = null;
switch (orientation) {
case HORIZONTAL:
line = new Line2D.Double(v, dataArea.getMinY(), v,
dataArea.getMaxY());
break;
case VERTICAL:
line = new Line2D.Double(dataArea.getMinX(), v,
dataArea.getMaxX(), v);
break;
default:
throw new IllegalStateException("Unrecognised orientation.");
}
final Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, marker.getAlpha()));
g2.setPaint(marker.getPaint());
g2.setStroke(marker.getStroke());
g2.draw(line);
String label = marker.getLabel();
RectangleAnchor anchor = marker.getLabelAnchor();
if (label != null) {
Font labelFont = marker.getLabelFont();
g2.setFont(labelFont);
Point2D coords = calculateRangeMarkerTextAnchorPoint(
g2, orientation, dataArea, line.getBounds2D(),
marker.getLabelOffset(),
LengthAdjustmentType.EXPAND, anchor);
Rectangle2D r = TextUtils.calcAlignedStringBounds(label,
g2, (float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
g2.setPaint(marker.getLabelBackgroundColor());
g2.fill(r);
g2.setPaint(marker.getLabelPaint());
TextUtils.drawAlignedString(label, g2,
(float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
}
g2.setComposite(originalComposite);
} else if (marker instanceof IntervalMarker) {
IntervalMarker im = (IntervalMarker) marker;
double start = im.getStartValue();
double end = im.getEndValue();
Range range = rangeAxis.getRange();
if (!(range.intersects(start, end))) {
return;
}
double start2d = rangeAxis.valueToJava2D(start, dataArea,
plot.getRangeAxisEdge());
double end2d = rangeAxis.valueToJava2D(end, dataArea,
plot.getRangeAxisEdge());
double low = Math.min(start2d, end2d);
double high = Math.max(start2d, end2d);
PlotOrientation orientation = plot.getOrientation();
Rectangle2D rect = null;
if (orientation == PlotOrientation.HORIZONTAL) {
// clip left and right bounds to data area
low = Math.max(low, dataArea.getMinX());
high = Math.min(high, dataArea.getMaxX());
rect = new Rectangle2D.Double(low,
dataArea.getMinY(), high - low,
dataArea.getHeight());
} else if (orientation == PlotOrientation.VERTICAL) {
// clip top and bottom bounds to data area
low = Math.max(low, dataArea.getMinY());
high = Math.min(high, dataArea.getMaxY());
rect = new Rectangle2D.Double(dataArea.getMinX(),
low, dataArea.getWidth(),
high - low);
}
final Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, marker.getAlpha()));
Paint p = marker.getPaint();
if (p instanceof GradientPaint) {
GradientPaint gp = (GradientPaint) p;
GradientPaintTransformer t = im.getGradientPaintTransformer();
if (t != null) {
gp = t.transform(gp, rect);
}
g2.setPaint(gp);
} else {
g2.setPaint(p);
}
g2.fill(rect);
// now draw the outlines, if visible...
if (im.getOutlinePaint() != null && im.getOutlineStroke() != null) {
if (orientation == PlotOrientation.VERTICAL) {
Line2D line = new Line2D.Double();
double x0 = dataArea.getMinX();
double x1 = dataArea.getMaxX();
g2.setPaint(im.getOutlinePaint());
g2.setStroke(im.getOutlineStroke());
if (range.contains(start)) {
line.setLine(x0, start2d, x1, start2d);
g2.draw(line);
}
if (range.contains(end)) {
line.setLine(x0, end2d, x1, end2d);
g2.draw(line);
}
} else { // PlotOrientation.HORIZONTAL
Line2D line = new Line2D.Double();
double y0 = dataArea.getMinY();
double y1 = dataArea.getMaxY();
g2.setPaint(im.getOutlinePaint());
g2.setStroke(im.getOutlineStroke());
if (range.contains(start)) {
line.setLine(start2d, y0, start2d, y1);
g2.draw(line);
}
if (range.contains(end)) {
line.setLine(end2d, y0, end2d, y1);
g2.draw(line);
}
}
}
String label = marker.getLabel();
RectangleAnchor anchor = marker.getLabelAnchor();
if (label != null) {
Font labelFont = marker.getLabelFont();
g2.setFont(labelFont);
Point2D coords = calculateRangeMarkerTextAnchorPoint(
g2, orientation, dataArea, rect,
marker.getLabelOffset(), marker.getLabelOffsetType(),
anchor);
Rectangle2D r = TextUtils.calcAlignedStringBounds(label,
g2, (float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
g2.setPaint(marker.getLabelBackgroundColor());
g2.fill(r);
g2.setPaint(marker.getLabelPaint());
TextUtils.drawAlignedString(label, g2,
(float) coords.getX(), (float) coords.getY(),
marker.getLabelTextAnchor());
}
g2.setComposite(originalComposite);
}
}
/**
* Calculates the (x, y) coordinates for drawing a marker label.
*
* @param g2 the graphics device.
* @param orientation the plot orientation.
* @param dataArea the data area.
* @param markerArea the marker area.
* @param markerOffset the marker offset.
* @param labelOffsetForRange ??
* @param anchor the label anchor.
*
* @return The coordinates for drawing the marker label.
*/
private Point2D calculateRangeMarkerTextAnchorPoint(Graphics2D g2,
PlotOrientation orientation, Rectangle2D dataArea,
Rectangle2D markerArea, RectangleInsets markerOffset,
LengthAdjustmentType labelOffsetForRange, RectangleAnchor anchor) {
Rectangle2D anchorRect = null;
if (orientation == PlotOrientation.HORIZONTAL) {
anchorRect = markerOffset.createAdjustedRectangle(markerArea,
labelOffsetForRange, LengthAdjustmentType.CONTRACT);
}
else if (orientation == PlotOrientation.VERTICAL) {
anchorRect = markerOffset.createAdjustedRectangle(markerArea,
LengthAdjustmentType.CONTRACT, labelOffsetForRange);
}
return anchor.getAnchorPoint(anchorRect);
}
/**
* Returns a clone of the renderer.
*
* @return A clone.
*
* @throws CloneNotSupportedException if the renderer does not support
* cloning.
*/
@Override
protected Object clone() throws CloneNotSupportedException {
AbstractXYItemRenderer clone = (AbstractXYItemRenderer) super.clone();
// 'plot' : just retain reference, not a deep copy
clone.itemLabelGeneratorMap = CloneUtils.cloneMapValues(this.itemLabelGeneratorMap);
clone.defaultItemLabelGenerator = CloneUtils.clone(this.defaultItemLabelGenerator);
clone.toolTipGeneratorMap = CloneUtils.cloneMapValues(this.toolTipGeneratorMap);
clone.defaultToolTipGenerator = CloneUtils.clone(this.defaultToolTipGenerator);
clone.legendItemLabelGenerator = CloneUtils.clone(this.legendItemLabelGenerator);
clone.legendItemToolTipGenerator = CloneUtils.clone(this.legendItemToolTipGenerator);
clone.legendItemURLGenerator = CloneUtils.clone(this.legendItemURLGenerator);
clone.foregroundAnnotations = CloneUtils.cloneList(this.foregroundAnnotations);
clone.backgroundAnnotations = CloneUtils.cloneList(this.backgroundAnnotations);
return clone;
}
/**
* Tests this renderer for equality with another object.
*
* @param obj the object ({@code null} permitted).
*
* @return {@code true} or {@code false}.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof AbstractXYItemRenderer)) {
return false;
}
AbstractXYItemRenderer that = (AbstractXYItemRenderer) obj;
if (!this.itemLabelGeneratorMap.equals(that.itemLabelGeneratorMap)) {
return false;
}
if (!Objects.equals(this.defaultItemLabelGenerator, that.defaultItemLabelGenerator)) {
return false;
}
if (!this.toolTipGeneratorMap.equals(that.toolTipGeneratorMap)) {
return false;
}
if (!Objects.equals(this.defaultToolTipGenerator, that.defaultToolTipGenerator)) {
return false;
}
if (!Objects.equals(this.urlGenerator, that.urlGenerator)) {
return false;
}
if (!this.foregroundAnnotations.equals(that.foregroundAnnotations)) {
return false;
}
if (!this.backgroundAnnotations.equals(that.backgroundAnnotations)) {
return false;
}
if (!Objects.equals(this.legendItemLabelGenerator, that.legendItemLabelGenerator)) {
return false;
}
if (!Objects.equals(this.legendItemToolTipGenerator, that.legendItemToolTipGenerator)) {
return false;
}
if (!Objects.equals(this.legendItemURLGenerator, that.legendItemURLGenerator)) {
return false;
}
return super.equals(obj);
}
@Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + itemLabelGeneratorMap.hashCode();
result = 31 * result + (defaultItemLabelGenerator != null ? defaultItemLabelGenerator.hashCode() : 0);
result = 31 * result + toolTipGeneratorMap.hashCode();
result = 31 * result + (defaultToolTipGenerator != null ? defaultToolTipGenerator.hashCode() : 0);
result = 31 * result + (urlGenerator != null ? urlGenerator.hashCode() : 0);
result = 31 * result + (legendItemLabelGenerator != null ? legendItemLabelGenerator.hashCode() : 0);
result = 31 * result + (legendItemToolTipGenerator != null ? legendItemToolTipGenerator.hashCode() : 0);
result = 31 * result + (legendItemURLGenerator != null ? legendItemURLGenerator.hashCode() : 0);
return result;
}
/**
* Returns the drawing supplier from the plot.
*
* @return The drawing supplier (possibly {@code null}).
*/
@Override
public DrawingSupplier getDrawingSupplier() {
DrawingSupplier result = null;
XYPlot p = getPlot();
if (p != null) {
result = p.getDrawingSupplier();
}
return result;
}
/**
* Considers the current (x, y) coordinate and updates the crosshair point
* if it meets the criteria (usually means the (x, y) coordinate is the
* closest to the anchor point so far).
*
* @param crosshairState the crosshair state ({@code null} permitted,
* but the method does nothing in that case).
* @param x the x-value (in data space).
* @param y the y-value (in data space).
* @param datasetIndex the index of the dataset for the point.
* @param transX the x-value translated to Java2D space.
* @param transY the y-value translated to Java2D space.
* @param orientation the plot orientation ({@code null} not permitted).
*/
protected void updateCrosshairValues(CrosshairState crosshairState,
double x, double y, int datasetIndex,
double transX, double transY, PlotOrientation orientation) {
Args.nullNotPermitted(orientation, "orientation");
if (crosshairState != null) {
// do we need to update the crosshair values?
if (this.plot.isDomainCrosshairLockedOnData()) {
if (this.plot.isRangeCrosshairLockedOnData()) {
// both axes
crosshairState.updateCrosshairPoint(x, y, datasetIndex,
transX, transY, orientation);
} else {
// just the domain axis...
crosshairState.updateCrosshairX(x, transX, datasetIndex);
}
} else {
if (this.plot.isRangeCrosshairLockedOnData()) {
// just the range axis...
crosshairState.updateCrosshairY(y, transY, datasetIndex);
}
}
}
}
/**
* Draws an item label.
*
* @param g2 the graphics device.
* @param orientation the orientation.
* @param dataset the dataset.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
* @param x the x coordinate (in Java2D space).
* @param y the y coordinate (in Java2D space).
* @param negative indicates a negative value (which affects the item
* label position).
*/
protected void drawItemLabel(Graphics2D g2, PlotOrientation orientation,
XYDataset dataset, int series, int item, double x, double y,
boolean negative) {
XYItemLabelGenerator generator = getItemLabelGenerator(series, item);
if (generator != null) {
Font labelFont = getItemLabelFont(series, item);
Paint paint = getItemLabelPaint(series, item);
g2.setFont(labelFont);
g2.setPaint(paint);
String label = generator.generateLabel(dataset, series, item);
// get the label position..
ItemLabelPosition position;
if (!negative) {
position = getPositiveItemLabelPosition(series, item);
}
else {
position = getNegativeItemLabelPosition(series, item);
}
// work out the label anchor point...
Point2D anchorPoint = calculateLabelAnchorPoint(
position.getItemLabelAnchor(), x, y, orientation);
TextUtils.drawRotatedString(label, g2,
(float) anchorPoint.getX(), (float) anchorPoint.getY(),
position.getTextAnchor(), position.getAngle(),
position.getRotationAnchor());
}
}
/**
* Draws all the annotations for the specified layer.
*
* @param g2 the graphics device.
* @param dataArea the data area.
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
* @param layer the layer ({@code null} not permitted).
* @param info the plot rendering info.
*/
@Override
public void drawAnnotations(Graphics2D g2, Rectangle2D dataArea,
ValueAxis domainAxis, ValueAxis rangeAxis, Layer layer,
PlotRenderingInfo info) {
Args.nullNotPermitted(layer, "layer");
List<XYAnnotation> toDraw = new ArrayList<>();
switch (layer) {
case FOREGROUND:
toDraw.addAll(this.foregroundAnnotations);
break;
case BACKGROUND:
toDraw.addAll(this.backgroundAnnotations);
break;
default:
// should not get here
throw new RuntimeException("Unknown layer.");
}
int index = this.plot.getIndexOf(this);
for (XYAnnotation annotation : toDraw) {
annotation.draw(g2, this.plot, dataArea, domainAxis, rangeAxis,
index, info);
}
}
/**
* Adds an entity to the collection. Note the the {@code entityX} and
* {@code entityY} coordinates are in Java2D space, should already be
* adjusted for the plot orientation, and will only be used if
* {@code hotspot} is {@code null}.
*
* @param entities the entity collection being populated.
* @param hotspot the entity area (if {@code null} a default will be
* used).
* @param dataset the dataset.
* @param series the series.
* @param item the item.
* @param entityX the entity x-coordinate (in Java2D space, only used if
* {@code hotspot} is {@code null}).
* @param entityY the entity y-coordinate (in Java2D space, only used if
* {@code hotspot} is {@code null}).
*/
protected void addEntity(EntityCollection entities, Shape hotspot,
XYDataset dataset, int series, int item, double entityX,
double entityY) {
if (!getItemCreateEntity(series, item)) {
return;
}
// if not hotspot is provided, we create a default based on the
// provided data coordinates (which are already in Java2D space)
if (hotspot == null) {
double r = getDefaultEntityRadius();
double w = r * 2;
hotspot = new Ellipse2D.Double(entityX - r, entityY - r, w, w);
}
String tip = null;
XYToolTipGenerator generator = getToolTipGenerator(series, item);
if (generator != null) {
tip = generator.generateToolTip(dataset, series, item);
}
String url = null;
if (getURLGenerator() != null) {
url = getURLGenerator().generateURL(dataset, series, item);
}
XYItemEntity entity = new XYItemEntity(hotspot, dataset, series, item,
tip, url);
entities.add(entity);
}
/**
* Utility method delegating to {@link GeneralPath#moveTo} taking double as
* parameters.
*
* @param hotspot the region under construction ({@code null} not
* permitted);
* @param x the x coordinate;
* @param y the y coordinate;
*/
protected static void moveTo(GeneralPath hotspot, double x, double y) {
hotspot.moveTo((float) x, (float) y);
}
/**
* Utility method delegating to {@link GeneralPath#lineTo} taking double as
* parameters.
*
* @param hotspot the region under construction ({@code null} not
* permitted);
* @param x the x coordinate;
* @param y the y coordinate;
*/
protected static void lineTo(GeneralPath hotspot, double x, double y) {
hotspot.lineTo((float) x, (float) y);
}
}