JFreeChart（一）
package com.supcon.honcomb.basearchives.entity;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Polygon;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.Stroke;
import java.awt.font.FontRenderContext;
import java.awt.font.LineMetrics;
import java.awt.geom.AffineTransform;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import java.text.NumberFormat;
import org.jfree.chart.entity.CategoryItemEntity;
import org.jfree.chart.entity.EntityCollection;
import org.jfree.chart.plot.PlotRenderingInfo;
import org.jfree.chart.plot.PlotState;
import org.jfree.chart.plot.SpiderWebPlot;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.RectangleInsets;
import org.jfree.util.TableOrder;
/**
* 刻度蜘蛛环图
*
* @author 成尚謙 lhx222@gmail.com
* @since 2011-09-14
* @version 1.0
*/
public class CalibrationSpiderWebPlot extends SpiderWebPlot {
private static final long serialVersionUID = -11L;
private NumberFormat format = NumberFormat.getInstance();
private static final double PERPENDICULAR = 90;
private static final double TICK_SCALE = 0.015;
private int valueLabelGap = DEFAULT_GAP;
private static final int DEFAULT_GAP = 10;
private static final double THRESHOLD = 15;
public static final int DEFAULT_TICKS = 5; // 刻度数
public static final double DEFAULT_MAX_VALUE = 100; // 坐标最大值
public static final boolean DEFAULT_DRAW_RING = true; // 画换默认值
/**
* 刻度数/环数
*/
private int ticks = DEFAULT_TICKS;
/**
* 画环
*/
private boolean drawRing = false;
/**
* 刻度前缀
*/
private String lablePrefix = "";
/**
* 刻度后缀
*/
private String lableSuffix = "";
/**
* 默认坐标最大值和画环
*
* @param createCategoryDataset
*/
public CalibrationSpiderWebPlot(CategoryDataset createCategoryDataset) {
this(createCategoryDataset, DEFAULT_MAX_VALUE); // 设置坐标最大值为默认的值
}
/**
* 默认画环,与刻度数
*
* @param createCategoryDataset
* @param maxValue
*/
public CalibrationSpiderWebPlot(CategoryDataset createCategoryDataset,
double maxValue) {
this(createCategoryDataset, maxValue, DEFAULT_DRAW_RING); // 设置画换默认值
}
/**
* 自定义坐标最大值和画环
*
* @param createCategoryDataset
* @param maxValue
* @param drawRing
*/
public CalibrationSpiderWebPlot(CategoryDataset createCategoryDataset,
double maxValue, boolean drawRing) {
this(createCategoryDataset, maxValue, drawRing, DEFAULT_TICKS);// 设置刻度数默认值
}
/**
* 自定义坐标最大值和画环、刻度数
*
* @param createCategoryDataset
* @param maxValue
* @param drawRing
*/
public CalibrationSpiderWebPlot(CategoryDataset createCategoryDataset,
double maxValue, boolean drawRing, int ticks) {
this(createCategoryDataset, maxValue, drawRing, ticks, "");// 设置刻度前缀默认值
}
/**
* 自定义坐标最大值和画环以及刻度前缀、刻度数
*
* @param createCategoryDataset
* @param maxValue
* @param drawRing
*/
public CalibrationSpiderWebPlot(CategoryDataset createCategoryDataset,
double maxValue, boolean drawRing, int ticks, String lablePrefix) {
this(createCategoryDataset, maxValue, drawRing, ticks, lablePrefix, "");
;// 设置刻度后缀默认值
}
/**
* 自定义坐标最大值和画环以及刻度前/后缀、刻度数
*
* @param createCategoryDataset
* @param maxValue
* @param drawRing
*/
public CalibrationSpiderWebPlot(CategoryDataset createCategoryDataset,
double maxValue, boolean drawRing, int ticks, String lablePrefix,
String lableSuffix) {
super(createCategoryDataset);
this.setMaxValue(maxValue);// 设置坐标最大值
this.setDrawRing(drawRing);// 设置画换
// this.setTicks(ticks);//设置刻度数
this.setLablePrefix(lablePrefix);// 刻度前缀
this.setLableSuffix(lableSuffix);// 刻度后缀
}
/**
* 画图，支持添加圆环
*
* @param g2
* the graphics device.
* @param area
* the area within which the plot should be drawn.
* @param anchor
* the anchor point (<code>null</code> permitted).
* @param parentState
* the state from the parent plot, if there is one.
* @param info
* collects info about the drawing.
*/
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
PlotState parentState, PlotRenderingInfo info) {
// adjust for insets...
RectangleInsets insets = getInsets();
insets.trim(area);
if (info != null) {
info.setPlotArea(area);
info.setDataArea(area);
}
drawBackground(g2, area);
drawOutline(g2, area);
Shape savedClip = g2.getClip();
g2.clip(area);
Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
getForegroundAlpha()));
if (!DatasetUtilities.isEmptyOrNull(this.getDataset())) {
int seriesCount = 0, catCount = 0;
if (this.getDataExtractOrder() == TableOrder.BY_ROW) {
seriesCount = this.getDataset().getRowCount();
catCount = this.getDataset().getColumnCount();
} else {
seriesCount = this.getDataset().getColumnCount();
catCount = this.getDataset().getRowCount();
}
// ensure we have a maximum value to use on the axes
if (this.getMaxValue() == DEFAULT_MAX_VALUE)
calculateMaxValue(seriesCount, catCount);
// Next, setup the plot area
// adjust the plot area by the interior spacing value
double gapHorizontal = area.getWidth() * getInteriorGap();
double gapVertical = area.getHeight() * getInteriorGap();
double X = area.getX() + gapHorizontal / 2;
double Y = area.getY() + gapVertical / 2;
double W = area.getWidth() - gapHorizontal;
double H = area.getHeight() - gapVertical;
double headW = area.getWidth() * this.headPercent;
double headH = area.getHeight() * this.headPercent;
// make the chart area a square
double min = Math.min(W, H) / 2;
X = (X + X + W) / 2 - min;
Y = (Y + Y + H) / 2 - min;
W = 2 * min;
H = 2 * min;
Point2D centre = new Point2D.Double(X + W / 2, Y + H / 2);
Rectangle2D radarArea = new Rectangle2D.Double(X, Y, W, H);
// draw the axis and category label
for (int cat = 0; cat < catCount; cat++) {
double angle = getStartAngle()
+ (getDirection().getFactor() * cat * 360 / catCount);
// 如果只有两个分类，设置固定角度
if (catCount == 2 && cat == 1) {
angle = 0;
}
Point2D endPoint = getWebPoint(radarArea, angle, 1);
// 1 = end of axis
Line2D line = new Line2D.Double(centre, endPoint);
g2.setPaint(this.getAxisLinePaint());
g2.setStroke(this.getAxisLineStroke());
g2.draw(line);
drawLabel(g2, radarArea, 0.0, cat, angle, 360.0 / catCount);
}
// 画环
if (this.isDrawRing()) {
Point2D topPoint = getWebPoint(radarArea, 90, 1);// 以90度为轴心，计算各个圆环的x、y坐标
double topPointR = centre.getY() - topPoint.getY();// 轴心顶点圆的半径
double step = topPointR / this.getTicks();// 每个刻度的半径长
for (int p = this.getTicks(); p >= 1; p--) {
double r = p * step;
double upperLeftX = centre.getX() - r;
double upperLeftY = centre.getY() - r;
double d = 2 * r;
Ellipse2D ring = new Ellipse2D.Double(upperLeftX,
upperLeftY, d, d);
g2.setPaint(Color.WHITE);
g2.draw(ring);
}
}
// Now actually plot each of the series polygons..
for (int series = 0; series < seriesCount; series++) {
drawRadarPoly(g2, radarArea, centre, info, series, catCount,
headH, headW);
}
} else {
drawNoDataMessage(g2, area);
}
g2.setClip(savedClip);
g2.setComposite(originalComposite);
drawOutline(g2, area);
}
/**
* 增加刻度
*/
/*
* @Override protected void drawLabel(final Graphics2D g2, final Rectangle2D
* plotArea, final double value, final int cat, final double startAngle,
* final double extent) { super.drawLabel(g2, plotArea, value, cat,
* startAngle, extent); final FontRenderContext frc =
* g2.getFontRenderContext(); final double[] transformed = new double[2];
* final double[] transformer = new double[2]; final Arc2D arc1 = new
* Arc2D.Double(plotArea, startAngle, 0, Arc2D.OPEN);
*//**
* 设置默认值
*/
/*
* if(ticks <= 0){ ticks = DEFAULT_TICKS; }
*
* for (int i = 1; i <= ticks; i++) {
*
* final Point2D point1 = arc1.getEndPoint();
*
* final double deltaX = plotArea.getCenterX(); final double deltaY =
* plotArea.getCenterY(); double labelX = point1.getX() - deltaX; double
* labelY = point1.getY() - deltaY;
*
* final double scale = ((double) i / (double) ticks); final AffineTransform
* tx = AffineTransform.getScaleInstance(scale, scale); final
* AffineTransform pointTrans = AffineTransform.getScaleInstance(scale +
* TICK_SCALE, scale + TICK_SCALE); transformer[0] = labelX; transformer[1]
* = labelY; pointTrans.transform(transformer, 0, transformed, 0, 1); final
* double pointX = transformed[0] + deltaX; final double pointY =
* transformed[1] + deltaY; tx.transform(transformer, 0, transformed, 0, 1);
* labelX = transformed[0] + deltaX; labelY = transformed[1] + deltaY;
*
* double rotated = (PERPENDICULAR);
*
* AffineTransform rotateTrans =
* AffineTransform.getRotateInstance(Math.toRadians(rotated), labelX,
* labelY); transformer[0] = pointX; transformer[1] = pointY;
* rotateTrans.transform(transformer, 0, transformed, 0, 1); final double x1
* = transformed[0]; final double y1 = transformed[1];
*
* rotated = (-PERPENDICULAR); rotateTrans =
* AffineTransform.getRotateInstance(Math.toRadians(rotated), labelX,
* labelY);
*
* rotateTrans.transform(transformer, 0, transformed, 0, 1);
*
* final Composite saveComposite = g2.getComposite();
* g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
* 1.0f));
*
* g2.draw(new Line2D.Double(transformed[0], transformed[1], x1, y1));
*
* if (startAngle == this.getStartAngle()) { String label =
* format.format(((double) i / (double) ticks) * this.getMaxValue()); final
* LineMetrics lm = getLabelFont().getLineMetrics(label, frc); final double
* ascent = lm.getAscent(); if (Math.abs(labelX - plotArea.getCenterX()) <
* THRESHOLD) { labelX += valueLabelGap; labelY += ascent / (float) 2; }
* else if (Math.abs(labelY - plotArea.getCenterY()) < THRESHOLD) { labelY
* += valueLabelGap; } else if (labelX >= plotArea.getCenterX()) { if
* (labelY < plotArea.getCenterY()) { labelX += valueLabelGap; labelY +=
* valueLabelGap; } else { labelX -= valueLabelGap; labelY += valueLabelGap;
* } } else { if (labelY > plotArea.getCenterY()) { labelX -= valueLabelGap;
* labelY -= valueLabelGap; } else { labelX += valueLabelGap; labelY -=
* valueLabelGap; } } g2.setPaint(getLabelPaint());
* g2.setFont(getLabelFont());
*
* //添加刻度的前缀和后缀 if(null != this.getLablePrefix() &&
* !"".equals(this.getLablePrefix())){ label = this.getLablePrefix() +
* label; } if(null != this.getLableSuffix() &&
* !"".equals(this.getLableSuffix())){ label = label +
* this.getLableSuffix(); }
*
* g2.drawString(label, (float) labelX, (float) labelY); }
* g2.setComposite(saveComposite); } }
*/
/**
* Draws a radar plot polygon. 如果只有两个分类，设置固定角度
*
* @param g2
* the graphics device.
* @param plotArea
* the area we are plotting in (already adjusted).
* @param centre
* the centre point of the radar axes
* @param info
* chart rendering info.
* @param series
* the series within the dataset we are plotting
* @param catCount
* the number of categories per radar plot
* @param headH
* the data point height
* @param headW
* the data point width
*/
protected void drawRadarPoly(Graphics2D g2, Rectangle2D plotArea,
Point2D centre, PlotRenderingInfo info, int series, int catCount,
double headH, double headW) {
Polygon polygon = new Polygon();
EntityCollection entities = null;
if (info != null) {
entities = info.getOwner().getEntityCollection();
}
// plot the data...
for (int cat = 0; cat < catCount; cat++) {
Number dataValue = getPlotValue(series, cat);
if (dataValue != null) {
double value = dataValue.doubleValue();
if (value >= 0) { // draw the polygon series...
// Finds our starting angle from the centre for this axis
double angle = getStartAngle()
+ (getDirection().getFactor() * cat * 360 / catCount);
// 如果只有两个分类，设置固定角度
if (catCount == 2 && cat == 1) {
angle = 0;
}
// The following angle calc will ensure there isn't a top
// vertical axis - this may be useful if you don't want any
// given criteria to 'appear' move important than the
// others..
// + (getDirection().getFactor()
// * (cat + 0.5) * 360 / catCount);
// find the point at the appropriate distance end point
// along the axis/angle identified above and add it to the
// polygon
Point2D point = getWebPoint(plotArea, angle, value
/ this.getMaxValue());
polygon.addPoint((int) point.getX(), (int) point.getY());
// put an elipse at the point being plotted..
Paint paint = getSeriesPaint(series);
Paint outlinePaint = getSeriesOutlinePaint(series);
Stroke outlineStroke = getSeriesOutlineStroke(series);
Ellipse2D head = new Ellipse2D.Double(point.getX() - headW
/ 2, point.getY() - headH / 2, headW, headH);
g2.setPaint(paint);
g2.fill(head);
g2.setStroke(outlineStroke);
g2.setPaint(outlinePaint);
g2.draw(head);
if (entities != null) {
int row = 0;
int col = 0;
if (this.getDataExtractOrder() == TableOrder.BY_ROW) {
row = series;
col = cat;
} else {
row = cat;
col = series;
}
String tip = null;
if (this.getToolTipGenerator() != null) {
tip = this.getToolTipGenerator().generateToolTip(
this.getDataset(), row, col);
}
String url = null;
if (this.getURLGenerator() != null) {
url = this.getURLGenerator().generateURL(
this.getDataset(), row, col);
}
Shape area = new Rectangle(
(int) (point.getX() - headW), (int) (point
.getY() - headH), (int) (headW * 2),
(int) (headH * 2));
CategoryItemEntity entity = new CategoryItemEntity(
area, tip, url, this.getDataset(), this
.getDataset().getRowKey(row), this
.getDataset().getColumnKey(col));
entities.add(entity);
}
}
}
}
// Plot the polygon
Paint paint = getSeriesPaint(series);
g2.setPaint(paint);
g2.setStroke(getSeriesOutlineStroke(series));
g2.draw(polygon);
// Lastly, fill the web polygon if this is required
if (this.isWebFilled()) {
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
0.1f));
g2.fill(polygon);
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER,
getForegroundAlpha()));
}
}
/**
*获取分类的最大值
*
* @param seriesCount
* the number of series
* @param catCount
* the number of categories
*/
private void calculateMaxValue(int seriesCount, int catCount) {
double v = 0;
Number nV = null;
for (int seriesIndex = 0; seriesIndex < seriesCount; seriesIndex++) {
for (int catIndex = 0; catIndex < catCount; catIndex++) {
nV = getPlotValue(seriesIndex, catIndex);
if (nV != null) {
v = nV.doubleValue();
if (v > this.getMaxValue()) {
this.setMaxValue(v);
}
}
}
}
}
public String getLablePrefix() {
return lablePrefix;
}
public void setLablePrefix(String lablePrefix) {
this.lablePrefix = lablePrefix;
}
public String getLableSuffix() {
return lableSuffix;
}
public void setLableSuffix(String lableSuffix) {
this.lableSuffix = lableSuffix;
}
public boolean isDrawRing() {
return drawRing;
}
public void setDrawRing(boolean drawRing) {
this.drawRing = drawRing;
}
public int getTicks() {
return ticks;
}
public void setTicks(int ticks) {
this.ticks = ticks;
}
}
