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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, 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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* --------------------
* XYShapeRenderer.java
* --------------------
* (C) Copyright 2008-2011 by Andreas Haumer, xS+S and Contributors.
*
* Original Author: Martin Hoeller (x Software + Systeme xS+S - Andreas
* Haumer);
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* Changes:
* --------
* 17-Sep-2008 : Version 1, based on a contribution from Martin Hoeller with
* amendments by David Gilbert (DG);
* 16-Feb-2010 : Added findZBounds() (patch 2952086) (MH);
* 19-Oct-2011 : Fixed NPE in findRangeBounds() (bug 3026341) (DG);
*
*/
package org.jfree.chart.renderer.xy;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.event.RendererChangeEvent;
import org.jfree.chart.plot.CrosshairState;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.LookupPaintScale;
import org.jfree.chart.renderer.PaintScale;
import org.jfree.data.Range;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYZDataset;
import org.jfree.io.SerialUtilities;
import org.jfree.util.PublicCloneable;
import org.jfree.util.ShapeUtilities;
/**
* A renderer that draws shapes at (x, y) coordinates and, if the dataset
* is an instance of {@link XYZDataset}, fills the shapes with a paint that
* is based on the z-value (the paint is obtained from a lookup table). The
* renderer also allows for optional guidelines, horizontal and vertical lines
* connecting the shape to the edges of the plot.
*
* The example shown here is generated by the
* XYShapeRendererDemo1.java program included in the JFreeChart
* demo collection:
*
* 
*
* This renderer has similarities to, but also differences from, the
* {@link XYLineAndShapeRenderer}.
*
* @since 1.0.11
*/
public class XYShapeRenderer extends AbstractXYItemRenderer
implements XYItemRenderer, Cloneable, Serializable {
/** Auto generated serial version id. */
private static final long serialVersionUID = 8320552104211173221L;
/** The paint scale (never null). */
private PaintScale paintScale;
/** A flag that controls whether or not the shape outlines are drawn. */
private boolean drawOutlines;
/**
* A flag that controls whether or not the outline paint is used (if not,
* the regular paint is used).
*/
private boolean useOutlinePaint;
/**
* A flag that controls whether or not the fill paint is used (if not,
* the fill paint is used).
*/
private boolean useFillPaint;
/** Flag indicating if guide lines should be drawn for every item. */
private boolean guideLinesVisible;
/** The paint used for drawing the guide lines (never null). */
private transient Paint guideLinePaint;
/** The stroke used for drawing the guide lines (never null). */
private transient Stroke guideLineStroke;
/**
* Creates a new XYShapeRenderer instance with default
* attributes.
*/
public XYShapeRenderer() {
this.paintScale = new LookupPaintScale();
this.useFillPaint = false;
this.drawOutlines = false;
this.useOutlinePaint = true;
this.guideLinesVisible = false;
this.guideLinePaint = Color.darkGray;
this.guideLineStroke = new BasicStroke();
setBaseShape(new Ellipse2D.Double(-5.0, -5.0, 10.0, 10.0));
setAutoPopulateSeriesShape(false);
}
/**
* Returns the paint scale used by the renderer.
*
* @return The paint scale (never null).
*
* @see #setPaintScale(PaintScale)
*/
public PaintScale getPaintScale() {
return this.paintScale;
}
/**
* Sets the paint scale used by the renderer and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param scale the scale (null not permitted).
*
* @see #getPaintScale()
*/
public void setPaintScale(PaintScale scale) {
if (scale == null) {
throw new IllegalArgumentException("Null 'scale' argument.");
}
this.paintScale = scale;
notifyListeners(new RendererChangeEvent(this));
}
/**
* Returns true if outlines should be drawn for shapes, and
* false otherwise.
*
* @return A boolean.
*
* @see #setDrawOutlines(boolean)
*/
public boolean getDrawOutlines() {
return this.drawOutlines;
}
/**
* Sets the flag that controls whether outlines are drawn for
* shapes, and sends a {@link RendererChangeEvent} to all registered
* listeners.
*
* In some cases, shapes look better if they do NOT have an outline, but
* this flag allows you to set your own preference.
*
* @param flag the flag.
*
* @see #getDrawOutlines()
*/
public void setDrawOutlines(boolean flag) {
this.drawOutlines = flag;
fireChangeEvent();
}
/**
* Returns true if the renderer should use the fill paint
* setting to fill shapes, and false if it should just
* use the regular paint.
*
* Refer to XYLineAndShapeRendererDemo2.java to see the
* effect of this flag.
*
* @return A boolean.
*
* @see #setUseFillPaint(boolean)
* @see #getUseOutlinePaint()
*/
public boolean getUseFillPaint() {
return this.useFillPaint;
}
/**
* Sets the flag that controls whether the fill paint is used to fill
* shapes, and sends a {@link RendererChangeEvent} to all
* registered listeners.
*
* @param flag the flag.
*
* @see #getUseFillPaint()
*/
public void setUseFillPaint(boolean flag) {
this.useFillPaint = flag;
fireChangeEvent();
}
/**
* Returns the flag that controls whether the outline paint is used for
* shape outlines. If not, the regular series paint is used.
*
* @return A boolean.
*
* @see #setUseOutlinePaint(boolean)
*/
public boolean getUseOutlinePaint() {
return this.useOutlinePaint;
}
/**
* Sets the flag that controls whether the outline paint is used for shape
* outlines, and sends a {@link RendererChangeEvent} to all registered
* listeners.
*
* @param use the flag.
*
* @see #getUseOutlinePaint()
*/
public void setUseOutlinePaint(boolean use) {
this.useOutlinePaint = use;
fireChangeEvent();
}
/**
* Returns a flag that controls whether or not guide lines are drawn for
* each data item (the lines are horizontal and vertical "crosshairs"
* linking the data point to the axes).
*
* @return A boolean.
*
* @see #setGuideLinesVisible(boolean)
*/
public boolean isGuideLinesVisible() {
return this.guideLinesVisible;
}
/**
* Sets the flag that controls whether or not guide lines are drawn for
* each data item and sends a {@link RendererChangeEvent} to all registered
* listeners.
*
* @param visible the new flag value.
*
* @see #isGuideLinesVisible()
*/
public void setGuideLinesVisible(boolean visible) {
this.guideLinesVisible = visible;
fireChangeEvent();
}
/**
* Returns the paint used to draw the guide lines.
*
* @return The paint (never null).
*
* @see #setGuideLinePaint(Paint)
*/
public Paint getGuideLinePaint() {
return this.guideLinePaint;
}
/**
* Sets the paint used to draw the guide lines and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param paint the paint (null not permitted).
*
* @see #getGuideLinePaint()
*/
public void setGuideLinePaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.guideLinePaint = paint;
fireChangeEvent();
}
/**
* Returns the stroke used to draw the guide lines.
*
* @return The stroke.
*
* @see #setGuideLineStroke(Stroke)
*/
public Stroke getGuideLineStroke() {
return this.guideLineStroke;
}
/**
* Sets the stroke used to draw the guide lines and sends a
* {@link RendererChangeEvent} to all registered listeners.
*
* @param stroke the stroke (null not permitted).
*
* @see #getGuideLineStroke()
*/
public void setGuideLineStroke(Stroke stroke) {
if (stroke == null) {
throw new IllegalArgumentException("Null 'stroke' argument.");
}
this.guideLineStroke = stroke;
fireChangeEvent();
}
/**
* Returns the lower and upper bounds (range) of the x-values in the
* specified dataset.
*
* @param dataset the dataset (null permitted).
*
* @return The range (null if the dataset is null
* or empty).
*/
public Range findDomainBounds(XYDataset dataset) {
if (dataset == null) {
return null;
}
Range r = DatasetUtilities.findDomainBounds(dataset, false);
if (r == null) {
return null;
}
double offset = 0; // TODO getSeriesShape(n).getBounds().width / 2;
return new Range(r.getLowerBound() + offset,
r.getUpperBound() + offset);
}
/**
* Returns the range of values the renderer requires to display all the
* items from the specified dataset.
*
* @param dataset the dataset (null permitted).
*
* @return The range (null if the dataset is null
* or empty).
*/
public Range findRangeBounds(XYDataset dataset) {
if (dataset == null) {
return null;
}
Range r = DatasetUtilities.findRangeBounds(dataset, false);
if (r == null) {
return null;
}
double offset = 0; // TODO getSeriesShape(n).getBounds().height / 2;
return new Range(r.getLowerBound() + offset, r.getUpperBound()
+ offset);
}
/**
* Return the range of z-values in the specified dataset.
*
* @param dataset the dataset (null permitted).
*
* @return The range (null if the dataset is null
* or empty).
*/
public Range findZBounds(XYZDataset dataset) {
if (dataset != null) {
return DatasetUtilities.findZBounds(dataset);
}
else {
return null;
}
}
/**
* Returns the number of passes required by this renderer.
*
* @return 2.
*/
public int getPassCount() {
return 2;
}
/**
* Draws the block representing the specified item.
*
* @param g2 the graphics device.
* @param state the state.
* @param dataArea the data area.
* @param info the plot rendering info.
* @param plot the plot.
* @param domainAxis the x-axis.
* @param rangeAxis the y-axis.
* @param dataset the dataset.
* @param series the series index.
* @param item the item index.
* @param crosshairState the crosshair state.
* @param pass the pass index.
*/
public void drawItem(Graphics2D g2, XYItemRendererState state,
Rectangle2D dataArea, PlotRenderingInfo info, XYPlot plot,
ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset,
int series, int item, CrosshairState crosshairState, int pass) {
Shape hotspot = null;
EntityCollection entities = null;
if (info != null) {
entities = info.getOwner().getEntityCollection();
}
double x = dataset.getXValue(series, item);
double y = dataset.getYValue(series, item);
if (Double.isNaN(x) || Double.isNaN(y)) {
// can't draw anything
return;
}
double transX = domainAxis.valueToJava2D(x, dataArea,
plot.getDomainAxisEdge());
double transY = rangeAxis.valueToJava2D(y, dataArea,
plot.getRangeAxisEdge());
PlotOrientation orientation = plot.getOrientation();
// draw optional guide lines
if ((pass == 0) && this.guideLinesVisible) {
g2.setStroke(this.guideLineStroke);
g2.setPaint(this.guideLinePaint);
if (orientation == PlotOrientation.HORIZONTAL) {
g2.draw(new Line2D.Double(transY, dataArea.getMinY(), transY,
dataArea.getMaxY()));
g2.draw(new Line2D.Double(dataArea.getMinX(), transX,
dataArea.getMaxX(), transX));
}
else {
g2.draw(new Line2D.Double(transX, dataArea.getMinY(), transX,
dataArea.getMaxY()));
g2.draw(new Line2D.Double(dataArea.getMinX(), transY,
dataArea.getMaxX(), transY));
}
}
else if (pass == 1) {
Shape shape = getItemShape(series, item);
if (orientation == PlotOrientation.HORIZONTAL) {
shape = ShapeUtilities.createTranslatedShape(shape, transY,
transX);
}
else if (orientation == PlotOrientation.VERTICAL) {
shape = ShapeUtilities.createTranslatedShape(shape, transX,
transY);
}
hotspot = shape;
if (shape.intersects(dataArea)) {
//if (getItemShapeFilled(series, item)) {
g2.setPaint(getPaint(dataset, series, item));
g2.fill(shape);
//}
if (this.drawOutlines) {
if (getUseOutlinePaint()) {
g2.setPaint(getItemOutlinePaint(series, item));
}
else {
g2.setPaint(getItemPaint(series, item));
}
g2.setStroke(getItemOutlineStroke(series, item));
g2.draw(shape);
}
}
// add an entity for the item...
if (entities != null) {
addEntity(entities, hotspot, dataset, series, item, transX,
transY);
}
}
}
/**
* Get the paint for a given series and item from a dataset.
*
* @param dataset the dataset..
* @param series the series index.
* @param item the item index.
*
* @return The paint.
*/
protected Paint getPaint(XYDataset dataset, int series, int item) {
Paint p = null;
if (dataset instanceof XYZDataset) {
double z = ((XYZDataset) dataset).getZValue(series, item);
p = this.paintScale.getPaint(z);
}
else {
if (this.useFillPaint) {
p = getItemFillPaint(series, item);
}
else {
p = getItemPaint(series, item);
}
}
return p;
}
/**
* Tests this instance for equality with an arbitrary object. This method
* returns true if and only if:
*
* obj is an instance of XYShapeRenderer (not
* null);obj has the same field values as this
* XYShapeRenderer;
*
* @param obj the object (null permitted).
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof XYShapeRenderer)) {
return false;
}
XYShapeRenderer that = (XYShapeRenderer) obj;
if (!this.paintScale.equals(that.paintScale)) {
return false;
}
if (this.drawOutlines != that.drawOutlines) {
return false;
}
if (this.useOutlinePaint != that.useOutlinePaint) {
return false;
}
if (this.useFillPaint != that.useFillPaint) {
return false;
}
if (this.guideLinesVisible != that.guideLinesVisible) {
return false;
}
if (!this.guideLinePaint.equals(that.guideLinePaint)) {
return false;
}
if (!this.guideLineStroke.equals(that.guideLineStroke)) {
return false;
}
return super.equals(obj);
}
/**
* Returns a clone of this renderer.
*
* @return A clone of this renderer.
*
* @throws CloneNotSupportedException if there is a problem creating the
* clone.
*/
public Object clone() throws CloneNotSupportedException {
XYShapeRenderer clone = (XYShapeRenderer) super.clone();
if (this.paintScale instanceof PublicCloneable) {
PublicCloneable pc = (PublicCloneable) this.paintScale;
clone.paintScale = (PaintScale) pc.clone();
}
return clone;
}
/**
* Provides serialization support.
*
* @param stream the input stream.
*
* @throws IOException if there is an I/O error.
* @throws ClassNotFoundException if there is a classpath problem.
*/
private void readObject(ObjectInputStream stream)
throws IOException, ClassNotFoundException {
stream.defaultReadObject();
this.guideLinePaint = SerialUtilities.readPaint(stream);
this.guideLineStroke = SerialUtilities.readStroke(stream);
}
/**
* Provides serialization support.
*
* @param stream the output stream.
*
* @throws IOException if there is an I/O error.
*/
private void writeObject(ObjectOutputStream stream) throws IOException {
stream.defaultWriteObject();
SerialUtilities.writePaint(this.guideLinePaint, stream);
SerialUtilities.writeStroke(this.guideLineStroke, stream);
}
}