ExtendedStackedBarRenderer

Programação Java
#1

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;
      }

}

#2