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JFreeChart is a class library, written in Java, for generating charts.
Utilising the Java2D API, it supports a wide range of chart types including
bar charts, pie charts, line charts, XY-plots, time series plots, Sankey charts
and more.
/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-present, 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.]
*
* ----------------
* BlockBorder.java
* ----------------
* (C) Copyright 2004-present, by David Gilbert.
*
* Original Author: David Gilbert;
* Contributor(s): Tracy Hiltbrand (equals/hashCode comply with EqualsVerifier);
*
*/
package org.jfree.chart.block;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.geom.Rectangle2D;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.Objects;
import org.jfree.chart.HashUtils;
import org.jfree.chart.ui.RectangleInsets;
import org.jfree.chart.util.PaintUtils;
import org.jfree.chart.util.Args;
import org.jfree.chart.util.SerialUtils;
/**
* A border for a block. This class is immutable.
*/
public class BlockBorder implements BlockFrame, Serializable {
/** For serialization. */
private static final long serialVersionUID = 4961579220410228283L;
/** An empty border. */
public static final BlockBorder NONE = new BlockBorder(
RectangleInsets.ZERO_INSETS, Color.WHITE);
/** The space reserved for the border. */
private final RectangleInsets insets;
/** The border color. */
private transient Paint paint;
/**
* Creates a default border.
*/
public BlockBorder() {
this(Color.BLACK);
}
/**
* Creates a new border with the specified color.
*
* @param paint the color ({@code null} not permitted).
*/
public BlockBorder(Paint paint) {
this(new RectangleInsets(1, 1, 1, 1), paint);
}
/**
* Creates a new border with the specified line widths (in black).
*
* @param top the width of the top border.
* @param left the width of the left border.
* @param bottom the width of the bottom border.
* @param right the width of the right border.
*/
public BlockBorder(double top, double left, double bottom, double right) {
this(new RectangleInsets(top, left, bottom, right), Color.BLACK);
}
/**
* Creates a new border with the specified line widths (in black).
*
* @param top the width of the top border.
* @param left the width of the left border.
* @param bottom the width of the bottom border.
* @param right the width of the right border.
* @param paint the border paint ({@code null} not permitted).
*/
public BlockBorder(double top, double left, double bottom, double right,
Paint paint) {
this(new RectangleInsets(top, left, bottom, right), paint);
}
/**
* Creates a new border.
*
* @param insets the border insets ({@code null} not permitted).
* @param paint the paint ({@code null} not permitted).
*/
public BlockBorder(RectangleInsets insets, Paint paint) {
Args.nullNotPermitted(insets, "insets");
Args.nullNotPermitted(paint, "paint");
this.insets = insets;
this.paint = paint;
}
/**
* Returns the space reserved for the border.
*
* @return The space (never {@code null}).
*/
@Override
public RectangleInsets getInsets() {
return this.insets;
}
/**
* Returns the paint used to draw the border.
*
* @return The paint (never {@code null}).
*/
public Paint getPaint() {
return this.paint;
}
/**
* Draws the border by filling in the reserved space.
*
* @param g2 the graphics device.
* @param area the area.
*/
@Override
public void draw(Graphics2D g2, Rectangle2D area) {
// this default implementation will just fill the available
// border space with a single color
double t = this.insets.calculateTopInset(area.getHeight());
double b = this.insets.calculateBottomInset(area.getHeight());
double l = this.insets.calculateLeftInset(area.getWidth());
double r = this.insets.calculateRightInset(area.getWidth());
double x = area.getX();
double y = area.getY();
double w = area.getWidth();
double h = area.getHeight();
g2.setPaint(this.paint);
Rectangle2D rect = new Rectangle2D.Double();
if (t > 0.0) {
rect.setRect(x, y, w, t);
g2.fill(rect);
}
if (b > 0.0) {
rect.setRect(x, y + h - b, w, b);
g2.fill(rect);
}
if (l > 0.0) {
rect.setRect(x, y, l, h);
g2.fill(rect);
}
if (r > 0.0) {
rect.setRect(x + w - r, y, r, h);
g2.fill(rect);
}
}
/**
* Tests this border for equality with an arbitrary instance.
*
* @param obj the object ({@code null} permitted).
*
* @return A boolean.
*/
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof BlockBorder)) {
return false;
}
BlockBorder that = (BlockBorder) obj;
if (!Objects.equals(this.insets, that.insets)) {
return false;
}
if (!PaintUtils.equal(this.paint, that.paint)) {
return false;
}
return true;
}
@Override
public int hashCode() {
int hash = 5;
hash = 37 * hash + Objects.hashCode(this.insets);
hash = 37 * hash + HashUtils.hashCodeForPaint(this.paint);
return hash;
}
/**
* 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();
SerialUtils.writePaint(this.paint, stream);
}
/**
* 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.paint = SerialUtils.readPaint(stream);
}
}