org.jfree.chart.plot.CombinedRangeXYPlot Maven / Gradle / Ivy
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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2020, 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.]
*
* ------------------------
* CombinedRangeXYPlot.java
* ------------------------
* (C) Copyright 2001-2020, by Bill Kelemen and Contributors.
*
* Original Author: Bill Kelemen;
* Contributor(s): David Gilbert (for Object Refinery Limited);
* Anthony Boulestreau;
* David Basten;
* Kevin Frechette (for ISTI);
* Arnaud Lelievre;
* Nicolas Brodu;
* Petr Kubanek (bug 1606205);
*/
package org.jfree.chart.plot;
import java.awt.Graphics2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
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.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.PlotChangeEvent;
import org.jfree.chart.event.PlotChangeListener;
import org.jfree.chart.renderer.xy.XYItemRenderer;
import org.jfree.chart.ui.RectangleEdge;
import org.jfree.chart.ui.RectangleInsets;
import org.jfree.chart.util.ObjectUtils;
import org.jfree.chart.util.Args;
import org.jfree.chart.util.ShadowGenerator;
import org.jfree.data.Range;
/**
* An extension of {@link XYPlot} that contains multiple subplots that share a
* common range axis.
*/
public class CombinedRangeXYPlot extends XYPlot
implements PlotChangeListener {
/** For serialization. */
private static final long serialVersionUID = -5177814085082031168L;
/** Storage for the subplot references. */
private List subplots;
/** The gap between subplots. */
private double gap = 5.0;
/** Temporary storage for the subplot areas. */
private transient Rectangle2D[] subplotAreas;
/**
* Default constructor.
*/
public CombinedRangeXYPlot() {
this(new NumberAxis());
}
/**
* Creates a new plot.
*
* @param rangeAxis the shared axis.
*/
public CombinedRangeXYPlot(ValueAxis rangeAxis) {
super(null, // no data in the parent plot
null,
rangeAxis,
null);
this.subplots = new java.util.ArrayList();
}
/**
* Returns a string describing the type of plot.
*
* @return The type of plot.
*/
@Override
public String getPlotType() {
return localizationResources.getString("Combined_Range_XYPlot");
}
/**
* Returns the space between subplots.
*
* @return The gap.
*
* @see #setGap(double)
*/
public double getGap() {
return this.gap;
}
/**
* Sets the amount of space between subplots.
*
* @param gap the gap between subplots.
*
* @see #getGap()
*/
public void setGap(double gap) {
this.gap = gap;
}
/**
* Returns {@code true} if the domain is pannable for at least one subplot,
* and {@code false} otherwise.
*
* @return A boolean.
*/
@Override
public boolean isDomainPannable() {
for (XYPlot subplot : this.subplots) {
if (subplot.isDomainPannable()) {
return true;
}
}
return false;
}
/**
* Sets the flag, on each of the subplots, that controls whether or not the
* domain is pannable.
*
* @param pannable the new flag value.
*/
@Override
public void setDomainPannable(boolean pannable) {
for (XYPlot subplot : this.subplots) {
subplot.setDomainPannable(pannable);
}
}
/**
* Adds a subplot, with a default 'weight' of 1.
*
* You must ensure that the subplot has a non-null domain axis. The range
* axis for the subplot will be set to {@code null}.
*
* @param subplot the subplot.
*/
public void add(XYPlot subplot) {
add(subplot, 1);
}
/**
* Adds a subplot with a particular weight (greater than or equal to one).
* The weight determines how much space is allocated to the subplot
* relative to all the other subplots.
*
* You must ensure that the subplot has a non-null domain axis. The range
* axis for the subplot will be set to {@code null}.
*
* @param subplot the subplot ({@code null} not permitted).
* @param weight the weight (must be 1 or greater).
*/
public void add(XYPlot subplot, int weight) {
Args.nullNotPermitted(subplot, "subplot");
if (weight <= 0) {
String msg = "The 'weight' must be positive.";
throw new IllegalArgumentException(msg);
}
// store the plot and its weight
subplot.setParent(this);
subplot.setWeight(weight);
subplot.setInsets(new RectangleInsets(0.0, 0.0, 0.0, 0.0));
subplot.setRangeAxis(null);
subplot.addChangeListener(this);
this.subplots.add(subplot);
configureRangeAxes();
fireChangeEvent();
}
/**
* Removes a subplot from the combined chart.
*
* @param subplot the subplot ({@code null} not permitted).
*/
public void remove(XYPlot subplot) {
Args.nullNotPermitted(subplot, "subplot");
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);
configureRangeAxes();
fireChangeEvent();
}
}
/**
* Returns the list of subplots. The returned list may be empty, but is
* never {@code null}.
*
* @return An unmodifiable list of subplots.
*/
public List getSubplots() {
if (this.subplots != null) {
return Collections.unmodifiableList(this.subplots);
}
else {
return Collections.EMPTY_LIST;
}
}
/**
* Calculates the space required for the axes.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
*
* @return The space required for the axes.
*/
@Override
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 = getFixedRangeAxisSpace();
if (fixed != null) {
if (orientation == PlotOrientation.VERTICAL) {
space.setLeft(fixed.getLeft());
space.setRight(fixed.getRight());
}
else if (orientation == PlotOrientation.HORIZONTAL) {
space.setTop(fixed.getTop());
space.setBottom(fixed.getBottom());
}
}
else {
ValueAxis valueAxis = getRangeAxis();
RectangleEdge valueEdge = Plot.resolveRangeAxisLocation(
getRangeAxisLocation(), orientation
);
if (valueAxis != null) {
space = valueAxis.reserveSpace(g2, this, plotArea, valueEdge,
space);
}
}
Rectangle2D adjustedPlotArea = space.shrink(plotArea, null);
// work out the maximum height or width of the non-shared axes...
int n = this.subplots.size();
int totalWeight = 0;
for (int i = 0; i < n; i++) {
XYPlot sub = (XYPlot) this.subplots.get(i);
totalWeight += sub.getWeight();
}
// calculate plotAreas of all sub-plots, maximum vertical/horizontal
// axis width/height
this.subplotAreas = new Rectangle2D[n];
double x = adjustedPlotArea.getX();
double y = adjustedPlotArea.getY();
double usableSize = 0.0;
if (orientation == PlotOrientation.VERTICAL) {
usableSize = adjustedPlotArea.getWidth() - this.gap * (n - 1);
}
else if (orientation == PlotOrientation.HORIZONTAL) {
usableSize = adjustedPlotArea.getHeight() - this.gap * (n - 1);
}
for (int i = 0; i < n; i++) {
XYPlot plot = (XYPlot) this.subplots.get(i);
// calculate sub-plot area
if (orientation == PlotOrientation.VERTICAL) {
double w = usableSize * plot.getWeight() / totalWeight;
this.subplotAreas[i] = new Rectangle2D.Double(x, y, w,
adjustedPlotArea.getHeight());
x = x + w + this.gap;
}
else if (orientation == PlotOrientation.HORIZONTAL) {
double h = usableSize * plot.getWeight() / totalWeight;
this.subplotAreas[i] = new Rectangle2D.Double(x, y,
adjustedPlotArea.getWidth(), h);
y = y + h + this.gap;
}
AxisSpace subSpace = plot.calculateDomainAxisSpace(g2,
this.subplotAreas[i], null);
space.ensureAtLeast(subSpace);
}
return space;
}
/**
* Draws the plot within the specified area on a graphics device.
*
* @param g2 the graphics device.
* @param area the plot area (in Java2D space).
* @param anchor an anchor point in Java2D space ({@code null}
* permitted).
* @param parentState the state from the parent plot, if there is one
* ({@code null} permitted).
* @param info collects chart drawing information ({@code null}
* permitted).
*/
@Override
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
PlotState parentState, PlotRenderingInfo info) {
// set up info collection...
if (info != null) {
info.setPlotArea(area);
}
// adjust the drawing area for plot insets (if any)...
RectangleInsets insets = getInsets();
insets.trim(area);
AxisSpace space = calculateAxisSpace(g2, area);
Rectangle2D dataArea = space.shrink(area, null);
//this.axisOffset.trim(dataArea);
// set the width and height of non-shared axis of all sub-plots
setFixedDomainAxisSpaceForSubplots(space);
// draw the shared axis
ValueAxis axis = getRangeAxis();
RectangleEdge edge = getRangeAxisEdge();
double cursor = RectangleEdge.coordinate(dataArea, edge);
AxisState axisState = axis.draw(g2, cursor, area, dataArea, edge, info);
if (parentState == null) {
parentState = new PlotState();
}
parentState.getSharedAxisStates().put(axis, axisState);
// draw all the charts
for (int i = 0; i < this.subplots.size(); i++) {
XYPlot plot = (XYPlot) this.subplots.get(i);
PlotRenderingInfo subplotInfo = null;
if (info != null) {
subplotInfo = new PlotRenderingInfo(info.getOwner());
info.addSubplotInfo(subplotInfo);
}
plot.draw(g2, this.subplotAreas[i], anchor, parentState,
subplotInfo);
}
if (info != null) {
info.setDataArea(dataArea);
}
}
/**
* Returns a collection of legend items for the plot.
*
* @return The legend items.
*/
@Override
public LegendItemCollection getLegendItems() {
LegendItemCollection result = getFixedLegendItems();
if (result == null) {
result = new LegendItemCollection();
if (this.subplots != null) {
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
XYPlot plot = (XYPlot) iterator.next();
LegendItemCollection more = plot.getLegendItems();
result.addAll(more);
}
}
}
return result;
}
/**
* Multiplies the range on the domain axis/axes by the specified factor.
*
* @param factor the zoom factor.
* @param info the plot rendering info ({@code null} not permitted).
* @param source the source point ({@code null} not permitted).
*/
@Override
public void zoomDomainAxes(double factor, PlotRenderingInfo info,
Point2D source) {
zoomDomainAxes(factor, info, source, false);
}
/**
* Multiplies the range on the domain axis/axes by the specified factor.
*
* @param factor the zoom factor.
* @param info the plot rendering info ({@code null} not permitted).
* @param source the source point ({@code null} not permitted).
* @param useAnchor zoom about the anchor point?
*/
@Override
public void zoomDomainAxes(double factor, PlotRenderingInfo info,
Point2D source, boolean useAnchor) {
// delegate 'info' and 'source' argument checks...
XYPlot subplot = findSubplot(info, source);
if (subplot != null) {
subplot.zoomDomainAxes(factor, info, source, useAnchor);
}
else {
// if the source point doesn't fall within a subplot, we do the
// zoom on all subplots...
Iterator iterator = getSubplots().iterator();
while (iterator.hasNext()) {
subplot = (XYPlot) iterator.next();
subplot.zoomDomainAxes(factor, info, source, useAnchor);
}
}
}
/**
* Zooms in on the domain axes.
*
* @param lowerPercent the lower bound.
* @param upperPercent the upper bound.
* @param info the plot rendering info ({@code null} not permitted).
* @param source the source point ({@code null} not permitted).
*/
@Override
public void zoomDomainAxes(double lowerPercent, double upperPercent,
PlotRenderingInfo info, Point2D source) {
// delegate 'info' and 'source' argument checks...
XYPlot subplot = findSubplot(info, source);
if (subplot != null) {
subplot.zoomDomainAxes(lowerPercent, upperPercent, info, source);
}
else {
// if the source point doesn't fall within a subplot, we do the
// zoom on all subplots...
Iterator iterator = getSubplots().iterator();
while (iterator.hasNext()) {
subplot = (XYPlot) iterator.next();
subplot.zoomDomainAxes(lowerPercent, upperPercent, info,
source);
}
}
}
/**
* Pans all domain axes by the specified percentage.
*
* @param panRange the distance to pan (as a percentage of the axis length).
* @param info the plot info
* @param source the source point where the pan action started.
*
* @since 1.0.15
*/
@Override
public void panDomainAxes(double panRange, PlotRenderingInfo info,
Point2D source) {
XYPlot subplot = findSubplot(info, source);
if (subplot == null) {
return;
}
if (!subplot.isDomainPannable()) {
return;
}
PlotRenderingInfo subplotInfo = info.getSubplotInfo(
info.getSubplotIndex(source));
if (subplotInfo == null) {
return;
}
for (int i = 0; i < subplot.getDomainAxisCount(); i++) {
ValueAxis domainAxis = subplot.getDomainAxis(i);
if (domainAxis != null) {
domainAxis.pan(panRange);
}
}
}
/**
* Returns the subplot (if any) that contains the (x, y) point (specified
* in Java2D space).
*
* @param info the chart rendering info ({@code null} not permitted).
* @param source the source point ({@code null} not permitted).
*
* @return A subplot (possibly {@code null}).
*/
public XYPlot findSubplot(PlotRenderingInfo info, Point2D source) {
Args.nullNotPermitted(info, "info");
Args.nullNotPermitted(source, "source");
XYPlot result = null;
int subplotIndex = info.getSubplotIndex(source);
if (subplotIndex >= 0) {
result = (XYPlot) this.subplots.get(subplotIndex);
}
return result;
}
/**
* Sets the item renderer FOR ALL SUBPLOTS. Registered listeners are
* notified that the plot has been modified.
*
* Note: usually you will want to set the renderer independently for each
* subplot, which is NOT what this method does.
*
* @param renderer the new renderer.
*/
@Override
public void setRenderer(XYItemRenderer renderer) {
super.setRenderer(renderer); // not strictly necessary, since the
// renderer set for the
// parent plot is not used
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
XYPlot plot = (XYPlot) iterator.next();
plot.setRenderer(renderer);
}
}
/**
* Sets the orientation for the plot (and all its subplots).
*
* @param orientation the orientation.
*/
@Override
public void setOrientation(PlotOrientation orientation) {
super.setOrientation(orientation);
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
XYPlot plot = (XYPlot) iterator.next();
plot.setOrientation(orientation);
}
}
/**
* Sets the shadow generator for the plot (and all subplots) and sends
* a {@link PlotChangeEvent} to all registered listeners.
*
* @param generator the new generator ({@code null} permitted).
*/
@Override
public void setShadowGenerator(ShadowGenerator generator) {
setNotify(false);
super.setShadowGenerator(generator);
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
XYPlot plot = (XYPlot) iterator.next();
plot.setShadowGenerator(generator);
}
setNotify(true);
}
/**
* Returns a range representing the extent of the data values in this plot
* (obtained from the subplots) that will be rendered against the specified
* axis. NOTE: This method is intended for internal JFreeChart use, and
* is public only so that code in the axis classes can call it. Since
* only the range axis is shared between subplots, the JFreeChart code
* will only call this method for the range values (although this is not
* checked/enforced).
*
* @param axis the axis.
*
* @return The range.
*/
@Override
public Range getDataRange(ValueAxis axis) {
Range result = null;
if (this.subplots != null) {
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
XYPlot subplot = (XYPlot) iterator.next();
result = Range.combine(result, subplot.getDataRange(axis));
}
}
return result;
}
/**
* Sets the space (width or height, depending on the orientation of the
* plot) for the domain axis of each subplot.
*
* @param space the space.
*/
protected void setFixedDomainAxisSpaceForSubplots(AxisSpace space) {
Iterator iterator = this.subplots.iterator();
while (iterator.hasNext()) {
XYPlot plot = (XYPlot) iterator.next();
plot.setFixedDomainAxisSpace(space, false);
}
}
/**
* Handles a 'click' on the plot by updating the anchor values...
*
* @param x x-coordinate, where the click occured.
* @param y y-coordinate, where the click occured.
* @param info object containing information about the plot dimensions.
*/
@Override
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++) {
XYPlot subplot = (XYPlot) 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.
*/
@Override
public void plotChanged(PlotChangeEvent event) {
notifyListeners(event);
}
/**
* Tests this plot for equality with another object.
*
* @param obj the other object.
*
* @return {@code true} or {@code false}.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof CombinedRangeXYPlot)) {
return false;
}
CombinedRangeXYPlot that = (CombinedRangeXYPlot) obj;
if (this.gap != that.gap) {
return false;
}
if (!ObjectUtils.equal(this.subplots, that.subplots)) {
return false;
}
return super.equals(obj);
}
/**
* Returns a clone of the plot.
*
* @return A clone.
*
* @throws CloneNotSupportedException this class will not throw this
* exception, but subclasses (if any) might.
*/
@Override
public Object clone() throws CloneNotSupportedException {
CombinedRangeXYPlot result = (CombinedRangeXYPlot) super.clone();
result.subplots = (List) ObjectUtils.deepClone(this.subplots);
for (Iterator it = result.subplots.iterator(); it.hasNext();) {
Plot child = (Plot) it.next();
child.setParent(result);
}
// after setting up all the subplots, the shared range axis may need
// reconfiguring
ValueAxis rangeAxis = result.getRangeAxis();
if (rangeAxis != null) {
rangeAxis.configure();
}
return result;
}
}