ExtendedStackedBarRenderer

Opa pessoal,

Será que alguém poderia me ajudar a corrigir os erros de compilação dessa classe. É uma classe utilizada para gerar e mostrar o totalizador do gráfico de barras empilhadas. Utiliza os jars do jfreechart e jcommon.
Quem puder ajudar agradeço

import java.awt.Color;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Paint;

import java.awt.geom.Rectangle2D;

import java.text.NumberFormat;

import org.jfree.chart.axis.CategoryAxis;

import org.jfree.chart.axis.ValueAxis;

import org.jfree.chart.entity.CategoryItemEntity;

import org.jfree.chart.entity.EntityCollection;

import org.jfree.chart.labels.CategoryItemLabelGenerator;

import org.jfree.chart.labels.CategoryToolTipGenerator;

import org.jfree.chart.plot.CategoryPlot;

import org.jfree.chart.plot.PlotOrientation;

import org.jfree.chart.renderer.category.CategoryItemRendererState;

import org.jfree.chart.renderer.category.StackedBarRenderer;

import org.jfree.data.category.CategoryDataset;

import org.jfree.ui.RectangleEdge;

import org.jfree.ui.RefineryUtilities;

import org.jfree.ui.TextAnchor;

/**

An extension of the {@link StackedBarRenderer} that can draw positive and negative totals at
the top and bottom of the stacked bars.
*/
public class ExtendedStackedBarRenderer extends StackedBarRenderer {

/** Show positive label? */
private boolean showPositiveTotal = true;

/** Show negative label? */
private boolean showNegativeTotal = true;

/** Font for labels. */
private Font totalLabelFont = new Font(“SansSerif”, Font.PLAIN, 10);

/** Formatter for total. */
private NumberFormat totalFormatter;

/**
- Creates a new renderer.
  */
  public ExtendedStackedBarRenderer() {
  super();
  this.totalFormatter = NumberFormat.getInstance();
  }
// ****************************************************************************
// * JFREECHART DEVELOPER GUIDE *
// * The JFreeChart Developer Guide, written by David Gilbert, is available *
// * to purchase from Object Refinery Limited: *
// * *
// * http://www.object-refinery.com/jfreechart/guide.html *
// * *
// * Sales are used to provide funding for the JFreeChart project - please *
// * support us so that we can continue developing free software. *
// ****************************************************************************

/**
- Returns the total formatter.
- @return the total formatter (never null).
  */
  public NumberFormat getTotalFormatter() {
  return this.totalFormatter;
  }
/**
- Sets the total formatter.
- @param format the formatter (null not permitted).
  */
  public void setTotalFormatter(NumberFormat format) {
  if (format == null) {
  throw new IllegalArgumentException(“Null format not permitted.”);
  }
  this.totalFormatter = format;
  }
/**
- Draws a stacked bar for a specific item.
- @param g2 the graphics device.
- @param state the renderer state.
- @param dataArea the plot area.
- @param plot the plot.
- @param domainAxis the domain (category) axis.
- @param rangeAxis the range (value) axis.
- @param dataset the data.
- @param row the row index (zero-based).
- @param column the column index (zero-based).
  */
  public void drawItem(Graphics2D g2,
  CategoryItemRendererState state,
  Rectangle2D dataArea,
  CategoryPlot plot,
  CategoryAxis domainAxis,
  ValueAxis rangeAxis,
  CategoryDataset dataset,
  int row,
  int column) {
```
// nothing is drawn for null values…

Number dataValue = dataset.getValue(row, column);

if (dataValue == null) {

return;

}
```
  double value = dataValue.doubleValue();
```
PlotOrientation orientation = plot.getOrientation();

double barW0 = domainAxis.getCategoryMiddle(

column, getColumnCount(), dataArea, plot.getDomainAxisEdge()

) - state.getBarWidth() / 2.0;
```
  double positiveBase = 0.0;
  double negativeBase = 0.0;
```
for (int i = 0; i < row; i++) {

Number v = dataset.getValue(i, column);

if (v != null) {

double d = v.doubleValue();

if (d > 0) {

positiveBase = positiveBase + d;

}

else {

negativeBase = negativeBase + d;

}

}

}
```
```
double translatedBase;

double translatedValue;

RectangleEdge location = plot.getRangeAxisEdge();

if (value > 0.0) {

translatedBase = rangeAxis.valueToJava2D(positiveBase, dataArea, location);

translatedValue = rangeAxis.valueToJava2D(positiveBase + value, dataArea, location);

}

else {

translatedBase = rangeAxis.valueToJava2D(negativeBase, dataArea, location);

translatedValue = rangeAxis.valueToJava2D(negativeBase + value, dataArea, location);

}

double barL0 = Math.min(translatedBase, translatedValue);

double barLength = Math.max(Math.abs(translatedValue - translatedBase),

getMinimumBarLength());
```
```
Rectangle2D bar = null;

if (orientation == PlotOrientation.HORIZONTAL) {

bar = new Rectangle2D.Double(barL0, barW0, barLength, state.getBarWidth());

}

else {

bar = new Rectangle2D.Double(barW0, barL0, state.getBarWidth(), barLength);

}

Paint seriesPaint = getItemPaint(row, column);

g2.setPaint(seriesPaint);

g2.fill(bar);

if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) {

g2.setStroke(getItemStroke(row, column));

g2.setPaint(getItemOutlinePaint(row, column));

g2.draw(bar);

}
```
```
CategoryItemLabelGenerator generator = getLabelGenerator(row, column);

if (generator != null && isItemLabelVisible(row, column)) {

drawItemLabel(g2, dataset, row, column, plot, generator, bar, (value < 0.0));

}
```
```
if (value > 0.0) {

if (this.showPositiveTotal) {

if (isLastPositiveItem(dataset, row, column)) {

g2.setPaint(Color.black);

g2.setFont(this.totalLabelFont);

double total = calculateSumOfPositiveValuesForCategory(dataset, column);

RefineryUtilities.drawRotatedString(

this.totalFormatter.format(total), g2,

(float) bar.getCenterX(),

(float) (bar.getMinY() - 4.0),

TextAnchor.BOTTOM_CENTER,

TextAnchor.BOTTOM_CENTER,

0.0

);

}

}

}

else {

if (this.showNegativeTotal) {

if (isLastNegativeItem(dataset, row, column)) {

g2.setPaint(Color.black);

g2.setFont(this.totalLabelFont);

double total = calculateSumOfNegativeValuesForCategory(dataset, column);

RefineryUtilities.drawRotatedString(

String.valueOf(total), g2,

(float) bar.getCenterX(),

(float) (bar.getMaxY() + 4.0),

TextAnchor.TOP_CENTER,

TextAnchor.TOP_CENTER,

0.0

);

}

}

}
```
```
// collect entity and tool tip information…

if (state.getInfo() != null) {

EntityCollection entities = state.getInfo().getOwner().getEntityCollection();

if (entities != null) {

String tip = null;

CategoryToolTipGenerator tipster = getToolTipGenerator(row, column);

if (tipster != null) {

tip = tipster.generateToolTip(dataset, row, column);

}

String url = null;

if (getItemURLGenerator(row, column) != null) {

url = getItemURLGenerator(row, column).generateURL(dataset, row, column);

}

CategoryItemEntity entity = new CategoryItemEntity(

bar, tip, url, dataset, row, dataset.getColumnKey(column), column

);

entities.addEntity(entity);

}

}
```
}

/**
- Returns true if the specified item is the last positive value for that category.
- @param dataset the dataset.
- @param row the row (series).
- @param column the column (category).
- @return a boolean.
  */
  private boolean isLastPositiveItem(CategoryDataset dataset, int row, int column) {
  boolean result = true;
  Number dataValue = dataset.getValue(row, column);
  if (dataValue == null) {
  return false; // value is null
  }
  for (int r = row + 1; r < dataset.getRowCount(); r++) {
  dataValue = dataset.getValue(r, column);
  if (dataValue != null) {
  result = result && (dataValue.doubleValue() <= 0.0);
  }
  }
  return result;
  }
/**
- Returns true if the specified item is the last negative value for that category.
- @param dataset the dataset.
- @param row the row (series).
- @param column the column (category).
- @return a boolean.
  */
  private boolean isLastNegativeItem(CategoryDataset dataset, int row, int column) {
  boolean result = true;
  Number dataValue = dataset.getValue(row, column);
  if (dataValue == null) {
  return false; // value is null
  }
  for (int r = row + 1; r < dataset.getRowCount(); r++) {
  dataValue = dataset.getValue(r, column);
  if (dataValue != null) {
  result = result && (dataValue.doubleValue() >= 0.0);
  }
  }
  return result;
  }
/**
- Calculates the sum of the positive values within a category.
- @param dataset the dataset.
- @param column the column (category).
- @return the sum of the positive values.
  */
  private double calculateSumOfPositiveValuesForCategory(CategoryDataset dataset, int column) {
  double result = 0.0;
  for (int r = 0; r < dataset.getRowCount(); r++) {
  Number dataValue = dataset.getValue(r, column);
  if (dataValue != null) {
  double v = dataValue.doubleValue();
  if (v > 0.0) {
  result = result + v;
  }
  }
  }
  return result;
  }
/**
- Calculates the sum of the negative values within a category.
- @param dataset the dataset.
- @param column the column (category).
- @return the sum of the negative values.
  */
  private double calculateSumOfNegativeValuesForCategory(CategoryDataset dataset, int column) {
  double result = 0.0;
  for (int r = 0; r < dataset.getRowCount(); r++) {
  Number dataValue = dataset.getValue(r, column);
  if (dataValue != null) {
  double v = dataValue.doubleValue();
  if (v < 0.0) {
  result = result + v;
  }
  }
  }
  return result;
  }

}

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