/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2004, 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* -------------------------------
* CombinedDomainCategoryPlot.java
* -------------------------------
* (C) Copyright 2003, 2004, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): Nicolas Brodu;
*
* $Id: CombinedDomainCategoryPlot.java,v 1.1 2004/08/31 14:39:20 mungady Exp $
*
* Changes:
* --------
* 16-May-2003 : Version 1 (DG);
* 08-Aug-2003 : Adjusted totalWeight in remove(...) method (DG);
* 19-Aug-2003 : Added equals(...) method, implemented Cloneable and Serializable (DG);
* 11-Sep-2003 : Fix cloning support (subplots) (NB);
* 15-Sep-2003 : Implemented PublicCloneable (DG);
* 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
* 17-Sep-2003 : Updated handling of 'clicks' (DG);
* 04-May-2004 : Added getter/setter methods for 'gap' attribute (DG);
*
*/
package org.jfree.chart.plot;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import org.jfree.chart.LegendItemCollection;
import org.jfree.chart.axis.AxisSpace;
import org.jfree.chart.axis.AxisState;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.event.PlotChangeEvent;
import org.jfree.chart.event.PlotChangeListener;
import org.jfree.ui.RectangleEdge;
import org.jfree.util.ObjectUtils;
import org.jfree.util.PublicCloneable;
/**
* A combined category plot where the domain axis is shared.
*/
public class CombinedDomainCategoryPlot extends CategoryPlot
implements Cloneable, PublicCloneable, Serializable,
PlotChangeListener {
/** Storage for the subplot references. */
private List subplots;
/** Total weight of all charts. */
private int totalWeight;
/** The gap between subplots. */
private double gap;
/** Temporary storage for the subplot areas. */
private transient Rectangle2D[] subplotAreas;
// TODO: move the above to the plot state
/**
* Default constructor.
*/
public CombinedDomainCategoryPlot() {
this(new CategoryAxis());
}
/**
* Creates a new plot.
*
* @param domainAxis the shared domain axis (<code>null</code> not permitted).
*/
public CombinedDomainCategoryPlot(CategoryAxis domainAxis) {
super(null, domainAxis, null, null);
this.subplots = new java.util.ArrayList();
this.totalWeight = 0;
this.gap = 5.0;
}
/**
* Returns the space between subplots.
*
* @return The gap (in Java2D units).
*/
public double getGap() {
return this.gap;
}
/**
* Sets the amount of space between subplots and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param gap the gap between subplots (in Java2D units).
*/
public void setGap(double gap) {
this.gap = gap;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Adds a subplot to the combined chart and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param subplot the subplot (<code>null</code> not permitted).
*/
public void add(CategoryPlot subplot) {
add(subplot, 1);
}
/**
* Adds a subplot to the combined chart and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param subplot the subplot (<code>null</code> not permitted).
* @param weight the weight (must be >= 1).
*/
public void add(CategoryPlot subplot, int weight) {
if (subplot == null) {
throw new IllegalArgumentException("Null 'subplot' argument.");
}
if (weight < 1) {
throw new IllegalArgumentException("Require weight >= 1.");
}
subplot.setParent(this);
subplot.setWeight(weight);
subplot.setInsets(new Insets(0, 0, 0, 0));
subplot.setDomainAxis(null);
subplot.setOrientation(getOrientation());
subplot.addChangeListener(this);
this.subplots.add(subplot);
this.totalWeight += weight;
CategoryAxis axis = getDomainAxis();
if (axis != null) {
axis.configure();
}
notifyListeners(new PlotChangeEvent(this));
}
/**
* Removes a subplot from the combined chart. Potentially, this removes some unique categories
* from the overall union of the datasets...so the domain axis is reconfigured, then a
* {@link PlotChangeEvent} is sent to all registered listeners.
*
* @param subplot the subplot (<code>null</code> not permitted).
*/
public void remove(CategoryPlot subplot) {
if (subplot == null) {
throw new IllegalArgumentException("Null 'subplot' argument.");
}
int position = -1;
int size = this.subplots.size();
int i = 0;
while (position == -1 && i < size) {
if (this.subplots.get(i) == subplot) {
position = i;
}
i++;
}
if (position != -1) {
this.subplots.remove(position);
subplot.setParent(null);
subplot.removeChangeListener(this);
this.totalWeight -= subplot.getWeight();
CategoryAxis domain = getDomainAxis();
if (domain != null) {
domain.configure();
}
notifyListeners(new PlotChangeEvent(this));
}
}
/**
* Returns the list of subplots.
*
* @return An unmodifiable list of subplots .
*/
public List getSubplots() {
return Collections.unmodifiableList(this.subplots);
}
/**
* Calculates the space required for the axes.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
*
* @return The space required for the axes.
*/
protected AxisSpace calculateAxisSpace(Graphics2D g2, Rectangle2D plotArea) {
AxisSpace space = new AxisSpace();
PlotOrientation orientation = getOrientation();
// work out the space required by the domain axis...
AxisSpace fixed = getFixedDomainAxisSpace();
if (fixed != null) {
if (orientation == PlotOrientation.HORIZONTAL) {
space.setLeft(fixed.getLeft());
space.setRight(fixed.getRight());
}
else if (orientation == PlotOrientation.VERTICAL) {
space.setTop(fixed.getTop());
space.setBottom(fixed.getBottom());
}
}
else {
CategoryAxis categoryAxis = getDomainAxis();
RectangleEdge categoryEdge = Plot.resolveDomainAxisLocation(
getDomainAxisLocation(), orientation
);
if (categoryAxis != null) {
space = categoryAxis.reserveSpace(g2, this, plotArea, categoryEdge, space);
}
else {
if (getDrawSharedDomainAxis()) {
space = getDomainAxis().reserveSpace(
g2, this, plotArea, categoryEdge, space
);
}
}
}
Rectangle2D adjustedPlotArea = space.shrink(plotArea, null);
// work out the maximum height or width of the non-shared axes...
int n = this.subplots.size();
this.subplotAreas = new Rectangle2D[n];
double x = adjustedPlotArea.getX();
double y = adjustedPlotArea.getY();
double usableSize = 0.0;
if (orientation == PlotOrientation.HORIZONTAL) {
usableSize = adjustedPlotArea.getWidth() - this.gap * (n - 1);
}
else if (orientation == PlotOrientation.VERTICAL) {
usableSize = adjustedPlotArea.getHeight() - this.gap * (n - 1);
}
for (int i = 0; i < n; i++) {
CategoryPlot plot = (CategoryPlot) this.subplots.get(i);
// calculate sub-plot area
if (orientation == PlotOrientation.HORIZONTAL) {
double w = usableSize * plot.getWeight() / this.totalWeight;
this.subplotAreas[i] = new Rectangle2D.Double(
x, y, w, adjustedPlotArea.getHeight()
);
x = x + w + this.gap;
}
else if (orientation == PlotOrientation.VERTICAL) {
double h = usableSize * plot.getWeight() / this.totalWeight;
this.subplotAreas[i] = new Rectangle2D.Double(x, y, adjustedPlotArea.getWidth(), h);
y = y + h + this.gap;
}
AxisSpace subSpace = plot.calculateRangeAxisSpace(g2, this.subplotAreas[i], null);
space.ensureAtLeast(subSpace);
}
return space;
}
/**
* Draws the plot on a Java 2D graphics device (such as the screen or a printer).
* Will perform all the placement calculations for each sub-plots and then tell these to draw
* themselves.
*
* @param g2 the graphics device.
* @param plotArea the area within which the plot (including axis labels) should be drawn.
* @param parentState the state from the parent plot, if there is one.
* @param info collects information about the drawing (<code>null</code> permitted).
*/
public void draw(Graphics2D g2,
Rectangle2D plotArea,
PlotState parentState,
PlotRenderingInfo info) {
// set up info collection...
if (info != null) {
info.setPlotArea(plotArea);
}
// adjust the drawing area for plot insets (if any)...
Insets insets = getInsets();
if (insets != null) {
plotArea.setRect(
plotArea.getX() + insets.left,
plotArea.getY() + insets.top,
plotArea.getWidth() - insets.left - insets.right,
plotArea.getHeight() - insets.top - insets.bottom
);
}
// calculate the data area...
setFixedRangeAxisSpaceForSubplots(null);
AxisSpace space = calculateAxisSpace(g2, plotArea);
Rectangle2D dataArea = space.shrink(plotArea, null);
// set the width and height of non-shared axis of all sub-plots
setFixedRangeAxisSpaceForSubplots(space);
// draw the shared axis
CategoryAxis axis = getDomainAxis();
RectangleEdge domainEdge = getDomainAxisEdge();
double cursor = RectangleEdge.coordinate(dataArea, domainEdge);
AxisState axisState = axis.draw(g2, cursor, plotArea, dataArea, domainEdge, info);
if (parentState == null) {
parentState = new PlotState();
}
parentState.getSharedAxisStates().put(axis, axisState);
// draw all the subplots
for (int i = 0; i < this.subplots.size(); i++) {
CategoryPlot plot = (CategoryPlot) this.subplots.get(i);
PlotRenderingInfo subplotInfo = null;
if (info != null) {
subplotInfo = new PlotRenderingInfo(info.getOwner());
info.addSubplotInfo(subplotInfo);
}
plot.draw(g2, this.subplotAreas[i], parentState, subplotInfo);
}
if (info != null) {
info.setDataArea(dataArea);
}
}
/**
* Sets the size (width or height, depending on the orientation of the plot) for the range
* axis of each subplot.
*
* @param space the space (<code>null</code> permitted).
*/
protected void setFixedRangeAxisSpaceForSubplots(AxisSpace space) {
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
CategoryPlot plot = (CategoryPlot) iterator.next();
plot.setFixedRangeAxisSpace(space);
}
}
/**
* Sets the orientation of the plot (and all subplots).
*
* @param orientation the orientation (<code>null</code> not permitted).
*/
public void setOrientation(PlotOrientation orientation) {
super.setOrientation(orientation);
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
CategoryPlot plot = (CategoryPlot) iterator.next();
plot.setOrientation(orientation);
}
}
/**
* Returns a collection of legend items for the plot.
*
* @return The legend items.
*/
public LegendItemCollection getLegendItems() {
LegendItemCollection result = new LegendItemCollection();
if (this.subplots != null) {
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
CategoryPlot plot = (CategoryPlot) iterator.next();
LegendItemCollection more = plot.getLegendItems();
result.addAll(more);
}
}
return result;
}
/**
* Returns an unmodifiable list of the categories contained in all the subplots.
*
* @return The list.
*/
public List getCategories() {
List result = new java.util.ArrayList();
if (this.subplots != null) {
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
CategoryPlot plot = (CategoryPlot) iterator.next();
List more = plot.getCategories();
Iterator moreIterator = more.iterator();
while (moreIterator.hasNext()) {
Comparable category = (Comparable) moreIterator.next();
if (!result.contains(category)) {
result.add(category);
}
}
}
}
return Collections.unmodifiableList(result);
}
/**
* Handles a 'click' on the plot.
*
* @param x x-coordinate of the click.
* @param y y-coordinate of the click.
* @param info information about the plot's dimensions.
*
*/
public void handleClick(int x, int y, PlotRenderingInfo info) {
Rectangle2D dataArea = info.getDataArea();
if (dataArea.contains(x, y)) {
for (int i = 0; i < this.subplots.size(); i++) {
CategoryPlot subplot = (CategoryPlot) this.subplots.get(i);
PlotRenderingInfo subplotInfo = info.getSubplotInfo(i);
subplot.handleClick(x, y, subplotInfo);
}
}
}
/**
* Receives a {@link PlotChangeEvent} and responds by notifying all listeners.
*
* @param event the event.
*/
public void plotChanged(PlotChangeEvent event) {
notifyListeners(event);
}
/**
* Tests the plot for equality with an arbitrary object.
*
* @param object the object to test against.
*
* @return <code>true</code> or <code>false</code>.
*/
public boolean equals(Object object) {
if (object == this) {
return true;
}
if (object instanceof CombinedDomainCategoryPlot) {
CombinedDomainCategoryPlot plot = (CombinedDomainCategoryPlot) object;
if (super.equals(object)) {
boolean b0 = ObjectUtils.equal(this.subplots, plot.subplots);
boolean b1 = (this.totalWeight == plot.totalWeight);
boolean b2 = (this.gap == plot.gap);
return b0 && b1 && b2;
}
}
return false;
}
/**
* Returns a clone of the plot.
*
* @return A clone.
*
* @throws CloneNotSupportedException this class will not throw this exception, but subclasses
* (if any) might.
*/
public Object clone() throws CloneNotSupportedException {
CombinedDomainCategoryPlot result = (CombinedDomainCategoryPlot) super.clone();
result.subplots = ObjectUtils.clone(this.subplots);
for (Iterator it = result.subplots.iterator(); it.hasNext();) {
Plot child = (Plot) it.next();
child.setParent(result);
}
return result;
}
}