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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.]
*
* ---------------------------
* CategoryTextAnnotation.java
* ---------------------------
* (C) Copyright 2003-2020, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): Peter Kolb (patch 2809117);
*
*/
package org.jfree.chart.annotations;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.io.Serializable;
import org.jfree.chart.axis.CategoryAnchor;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.event.AnnotationChangeEvent;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.Plot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.text.TextUtils;
import org.jfree.chart.ui.RectangleEdge;
import org.jfree.chart.util.Args;
import org.jfree.chart.util.PublicCloneable;
import org.jfree.data.category.CategoryDataset;
/**
* A text annotation that can be placed on a {@link CategoryPlot}.
*/
public class CategoryTextAnnotation extends TextAnnotation
implements CategoryAnnotation, Cloneable, PublicCloneable,
Serializable {
/** For serialization. */
private static final long serialVersionUID = 3333360090781320147L;
/** The category. */
private Comparable category;
/** The category anchor (START, MIDDLE, or END). */
private CategoryAnchor categoryAnchor;
/** The value. */
private double value;
/**
* Creates a new annotation to be displayed at the given location.
*
* @param text the text ({@code null} not permitted).
* @param category the category ({@code null} not permitted).
* @param value the value.
*/
public CategoryTextAnnotation(String text, Comparable category,
double value) {
super(text);
Args.nullNotPermitted(category, "category");
this.category = category;
this.value = value;
this.categoryAnchor = CategoryAnchor.MIDDLE;
}
/**
* Returns the category.
*
* @return The category (never {@code null}).
*
* @see #setCategory(Comparable)
*/
public Comparable getCategory() {
return this.category;
}
/**
* Sets the category that the annotation attaches to and sends an
* {@link AnnotationChangeEvent} to all registered listeners.
*
* @param category the category ({@code null} not permitted).
*
* @see #getCategory()
*/
public void setCategory(Comparable category) {
Args.nullNotPermitted(category, "category");
this.category = category;
fireAnnotationChanged();
}
/**
* Returns the category anchor point.
*
* @return The category anchor point.
*
* @see #setCategoryAnchor(CategoryAnchor)
*/
public CategoryAnchor getCategoryAnchor() {
return this.categoryAnchor;
}
/**
* Sets the category anchor point and sends an
* {@link AnnotationChangeEvent} to all registered listeners.
*
* @param anchor the anchor point ({@code null} not permitted).
*
* @see #getCategoryAnchor()
*/
public void setCategoryAnchor(CategoryAnchor anchor) {
Args.nullNotPermitted(anchor, "anchor");
this.categoryAnchor = anchor;
fireAnnotationChanged();
}
/**
* Returns the value that the annotation attaches to.
*
* @return The value.
*
* @see #setValue(double)
*/
public double getValue() {
return this.value;
}
/**
* Sets the value and sends an
* {@link AnnotationChangeEvent} to all registered listeners.
*
* @param value the value.
*
* @see #getValue()
*/
public void setValue(double value) {
this.value = value;
fireAnnotationChanged();
}
/**
* Draws the annotation.
*
* @param g2 the graphics device.
* @param plot the plot.
* @param dataArea the data area.
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
*/
@Override
public void draw(Graphics2D g2, CategoryPlot plot, Rectangle2D dataArea,
CategoryAxis domainAxis, ValueAxis rangeAxis) {
CategoryDataset dataset = plot.getDataset();
int catIndex = dataset.getColumnIndex(this.category);
int catCount = dataset.getColumnCount();
float anchorX = 0.0f;
float anchorY = 0.0f;
PlotOrientation orientation = plot.getOrientation();
RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
plot.getDomainAxisLocation(), orientation);
RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
plot.getRangeAxisLocation(), orientation);
if (orientation == PlotOrientation.HORIZONTAL) {
anchorY = (float) domainAxis.getCategoryJava2DCoordinate(
this.categoryAnchor, catIndex, catCount, dataArea,
domainEdge);
anchorX = (float) rangeAxis.valueToJava2D(this.value, dataArea,
rangeEdge);
}
else if (orientation == PlotOrientation.VERTICAL) {
anchorX = (float) domainAxis.getCategoryJava2DCoordinate(
this.categoryAnchor, catIndex, catCount, dataArea,
domainEdge);
anchorY = (float) rangeAxis.valueToJava2D(this.value, dataArea,
rangeEdge);
}
g2.setFont(getFont());
g2.setPaint(getPaint());
TextUtils.drawRotatedString(getText(), g2, anchorX, anchorY,
getTextAnchor(), getRotationAngle(), getRotationAnchor());
}
/**
* Tests this object for equality with another.
*
* @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 CategoryTextAnnotation)) {
return false;
}
CategoryTextAnnotation that = (CategoryTextAnnotation) obj;
if (!super.equals(obj)) {
return false;
}
if (!this.category.equals(that.getCategory())) {
return false;
}
if (!this.categoryAnchor.equals(that.getCategoryAnchor())) {
return false;
}
if (this.value != that.getValue()) {
return false;
}
return true;
}
/**
* Returns a hash code for this instance.
*
* @return A hash code.
*/
@Override
public int hashCode() {
int result = super.hashCode();
result = 37 * result + this.category.hashCode();
result = 37 * result + this.categoryAnchor.hashCode();
long temp = Double.doubleToLongBits(this.value);
result = 37 * result + (int) (temp ^ (temp >>> 32));
return result;
}
/**
* Returns a clone of the annotation.
*
* @return A clone.
*
* @throws CloneNotSupportedException this class will not throw this
* exception, but subclasses (if any) might.
*/
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}
