Example usage for java.awt GradientPaint GradientPaint

List of usage examples for java.awt GradientPaint GradientPaint

Introduction

In this page you can find the example usage for java.awt GradientPaint GradientPaint.

Prototype

@ConstructorProperties({ "point1", "color1", "point2", "color2", "cyclic" })
public GradientPaint(Point2D pt1, Color color1, Point2D pt2, Color color2, boolean cyclic) 

Source Link

Document

Constructs either a cyclic or acyclic GradientPaint object depending on the boolean parameter.

Usage

From source file:net.sf.fspdfs.chartthemes.spring.EyeCandySixtiesChartTheme.java

/**
 *
 */// www. j  ava  2s. c o m
protected JFreeChart createDialChart() throws JRException {

    JRMeterPlot jrPlot = (JRMeterPlot) getPlot();

    GradientPaint gp = new GradientPaint(new Point(), Color.LIGHT_GRAY, new Point(), Color.BLACK, false);

    GradientPaint gp2 = new GradientPaint(new Point(), Color.GRAY, new Point(), Color.BLACK);

    // get data for diagrams
    DialPlot dialPlot = new DialPlot();
    //dialPlot.setView(0.0, 0.0, 1.0, 1.0);
    if (getDataset() != null) {
        dialPlot.setDataset((ValueDataset) getDataset());
    }
    StandardDialFrame dialFrame = new StandardDialFrame();
    //dialFrame.setRadius(0.60);
    //dialFrame.setBackgroundPaint(gp2);
    dialFrame.setForegroundPaint(gp2);
    dialPlot.setDialFrame(dialFrame);

    DialBackground db = new DialBackground(gp);
    db.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL));
    dialPlot.setBackground(db);
    StandardDialScale scale = null;
    int dialUnitScale = 1;
    Range range = convertRange(jrPlot.getDataRange());
    if (range != null) {
        double bound = Math.max(Math.abs(range.getUpperBound()), Math.abs(range.getLowerBound()));
        dialUnitScale = ChartThemesUtilities.getScale(bound);

        double lowerBound = ChartThemesUtilities.getTruncatedValue(range.getLowerBound(), dialUnitScale);
        double upperBound = ChartThemesUtilities.getTruncatedValue(range.getUpperBound(), dialUnitScale);

        scale = new StandardDialScale(lowerBound, upperBound, 225, -270, (upperBound - lowerBound) / 6, 15);
        if ((lowerBound == (int) lowerBound && upperBound == (int) upperBound
                && scale.getMajorTickIncrement() == (int) scale.getMajorTickIncrement()) || dialUnitScale > 1) {
            scale.setTickLabelFormatter(new DecimalFormat("#,##0"));
        } else if (dialUnitScale == 1) {

            scale.setTickLabelFormatter(new DecimalFormat("#,##0.0"));
        } else if (dialUnitScale <= 0) {
            scale.setTickLabelFormatter(new DecimalFormat("#,##0.00"));
        }

    } else {
        scale = new StandardDialScale();
    }
    scale.setTickRadius(0.9);
    scale.setTickLabelOffset(0.16);
    JRFont tickLabelFont = jrPlot.getTickLabelFont();
    Integer defaultBaseFontSize = (Integer) getDefaultValue(defaultChartPropertiesMap,
            ChartThemesConstants.BASEFONT_SIZE);
    Font themeTickLabelFont = getFont(
            (JRFont) getDefaultValue(defaultPlotPropertiesMap, ChartThemesConstants.PLOT_TICK_LABEL_FONT),
            tickLabelFont, defaultBaseFontSize);
    scale.setTickLabelFont(themeTickLabelFont);
    scale.setMajorTickStroke(new BasicStroke(1f));
    scale.setMinorTickStroke(new BasicStroke(0.3f));
    scale.setMajorTickPaint(Color.WHITE);
    scale.setMinorTickPaint(Color.WHITE);
    scale.setTickLabelsVisible(true);
    scale.setFirstTickLabelVisible(true);
    dialPlot.addScale(0, scale);

    List intervals = jrPlot.getIntervals();
    if (intervals != null && intervals.size() > 0) {
        int size = Math.min(3, intervals.size());
        int colorStep = 0;
        if (size > 3)
            colorStep = 255 / (size - 3);

        for (int i = 0; i < size; i++) {
            JRMeterInterval interval = (JRMeterInterval) intervals.get(i);
            Range intervalRange = convertRange(interval.getDataRange());
            double intervalLowerBound = ChartThemesUtilities.getTruncatedValue(intervalRange.getLowerBound(),
                    dialUnitScale);
            double intervalUpperBound = ChartThemesUtilities.getTruncatedValue(intervalRange.getUpperBound(),
                    dialUnitScale);

            Color color = i < 3 ? (Color) ChartThemesConstants.AEGEAN_INTERVAL_COLORS.get(i)
                    : new Color(255 - colorStep * (i - 3), 0 + colorStep * (i - 3), 0);

            ScaledDialRange dialRange = new ScaledDialRange(intervalLowerBound, intervalUpperBound,
                    interval.getBackgroundColor() == null ? color : interval.getBackgroundColor(), 12f);
            dialRange.setInnerRadius(0.41);
            dialRange.setOuterRadius(0.41);
            dialPlot.addLayer(dialRange);
        }
    }

    JRValueDisplay display = jrPlot.getValueDisplay();
    String displayVisibility = display != null && getChart().hasProperties()
            ? getChart().getPropertiesMap().getProperty(DefaultChartTheme.PROPERTY_DIAL_VALUE_DISPLAY_VISIBLE)
            : "false";
    if (Boolean.parseBoolean(displayVisibility)) {
        ScaledDialValueIndicator dvi = new ScaledDialValueIndicator(0, dialUnitScale);
        dvi.setBackgroundPaint(ChartThemesConstants.TRANSPARENT_PAINT);
        //         dvi.setFont(JRFontUtil.getAwtFont(jrFont).deriveFont(10f).deriveFont(Font.BOLD));
        dvi.setOutlinePaint(ChartThemesConstants.TRANSPARENT_PAINT);
        dvi.setPaint(Color.WHITE);

        String pattern = display.getMask() != null ? display.getMask() : "#,##0.####";
        if (pattern != null)
            dvi.setNumberFormat(new DecimalFormat(pattern));
        dvi.setRadius(0.15);
        dvi.setValueAnchor(RectangleAnchor.CENTER);
        dvi.setTextAnchor(TextAnchor.CENTER);
        //dvi.setTemplateValue(Double.valueOf(getDialTickValue(dialPlot.getValue(0),dialUnitScale)));
        dialPlot.addLayer(dvi);
    }
    String label = getChart().hasProperties()
            ? getChart().getPropertiesMap().getProperty(DefaultChartTheme.PROPERTY_DIAL_LABEL)
            : null;

    if (label != null) {
        JRFont displayFont = jrPlot.getValueDisplay().getFont();
        Font themeDisplayFont = getFont(
                (JRFont) getDefaultValue(defaultPlotPropertiesMap, ChartThemesConstants.PLOT_DISPLAY_FONT),
                displayFont, defaultBaseFontSize);
        if (dialUnitScale < 0)
            label = new MessageFormat(label)
                    .format(new Object[] { String.valueOf(Math.pow(10, dialUnitScale)) });
        else if (dialUnitScale < 3)
            label = new MessageFormat(label).format(new Object[] { "1" });
        else
            label = new MessageFormat(label)
                    .format(new Object[] { String.valueOf((int) Math.pow(10, dialUnitScale - 2)) });

        String[] textLines = label.split("\\n");
        for (int i = 0; i < textLines.length; i++) {
            DialTextAnnotation dialAnnotation = new DialTextAnnotation(textLines[i]);
            dialAnnotation.setFont(themeDisplayFont);
            dialAnnotation.setPaint(Color.WHITE);
            dialAnnotation.setRadius(Math.sin(Math.PI / 4.0) + i / 10.0);
            dialAnnotation.setAnchor(TextAnchor.CENTER);
            dialPlot.addLayer(dialAnnotation);
        }
    }

    //DialPointer needle = new DialPointer.Pointer();
    Paint paint = new Color(191, 48, 0);
    DialPointer needle = new ScaledDialPointer(dialUnitScale, paint, paint);

    needle.setVisible(true);
    needle.setRadius(0.91);
    dialPlot.addLayer(needle);

    DialCap cap = new DialCap();
    cap.setRadius(0.05);
    cap.setFillPaint(Color.DARK_GRAY);
    cap.setOutlinePaint(Color.GRAY);
    cap.setOutlineStroke(new BasicStroke(0.5f));
    dialPlot.setCap(cap);

    JFreeChart jfreeChart = new JFreeChart((String) evaluateExpression(getChart().getTitleExpression()), null,
            dialPlot, getChart().getShowLegend() == null ? false : getChart().getShowLegend().booleanValue());

    // Set all the generic options
    configureChart(jfreeChart, getPlot());

    jfreeChart.setBackgroundPaint(ChartThemesConstants.TRANSPARENT_PAINT);
    jfreeChart.setBorderVisible(false);

    return jfreeChart;

}

From source file:net.sf.jasperreports.chartthemes.spring.EyeCandySixtiesChartTheme.java

@Override
protected JFreeChart createDialChart() throws JRException {

    JRMeterPlot jrPlot = (JRMeterPlot) getPlot();

    GradientPaint gp = new GradientPaint(new Point(), Color.LIGHT_GRAY, new Point(), Color.BLACK, false);

    GradientPaint gp2 = new GradientPaint(new Point(), Color.GRAY, new Point(), Color.BLACK);

    // get data for diagrams
    DialPlot dialPlot = new DialPlot();
    //dialPlot.setView(0.0, 0.0, 1.0, 1.0);
    if (getDataset() != null) {
        dialPlot.setDataset((ValueDataset) getDataset());
    }/* w  ww . j  a va  2 s. co  m*/
    StandardDialFrame dialFrame = new StandardDialFrame();
    //dialFrame.setRadius(0.60);
    //dialFrame.setBackgroundPaint(gp2);
    dialFrame.setForegroundPaint(gp2);
    dialPlot.setDialFrame(dialFrame);

    DialBackground db = new DialBackground(gp);
    db.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL));
    dialPlot.setBackground(db);
    StandardDialScale scale = null;
    int dialUnitScale = 1;
    Range range = convertRange(jrPlot.getDataRange());
    if (range != null) {
        double bound = Math.max(Math.abs(range.getUpperBound()), Math.abs(range.getLowerBound()));
        dialUnitScale = ChartThemesUtilities.getScale(bound);

        double lowerBound = ChartThemesUtilities.getTruncatedValue(range.getLowerBound(), dialUnitScale);
        double upperBound = ChartThemesUtilities.getTruncatedValue(range.getUpperBound(), dialUnitScale);
        int tickCount = jrPlot.getTickCount() != null && jrPlot.getTickCount() > 1 ? jrPlot.getTickCount() : 7;
        scale = new StandardDialScale(lowerBound, upperBound, 225, -270,
                (upperBound - lowerBound) / (tickCount - 1), 15);
        if ((lowerBound == (int) lowerBound && upperBound == (int) upperBound
                && scale.getMajorTickIncrement() == (int) scale.getMajorTickIncrement()) || dialUnitScale > 1) {
            scale.setTickLabelFormatter(
                    new DecimalFormat("#,##0", DecimalFormatSymbols.getInstance(getLocale())));
        } else if (dialUnitScale == 1) {

            scale.setTickLabelFormatter(
                    new DecimalFormat("#,##0.0", DecimalFormatSymbols.getInstance(getLocale())));
        } else if (dialUnitScale <= 0) {
            scale.setTickLabelFormatter(
                    new DecimalFormat("#,##0.00", DecimalFormatSymbols.getInstance(getLocale())));
        } else {
            // localizing the default tick label formatter
            scale.setTickLabelFormatter(
                    new DecimalFormat("0.0", DecimalFormatSymbols.getInstance(getLocale())));
        }

    } else {
        scale = new StandardDialScale();

        // localizing the default tick label formatter
        scale.setTickLabelFormatter(new DecimalFormat("0.0", DecimalFormatSymbols.getInstance(getLocale())));
    }
    scale.setTickRadius(0.9);
    scale.setTickLabelOffset(0.16);
    JRFont tickLabelFont = jrPlot.getTickLabelFont();
    Integer defaultBaseFontSize = (Integer) getDefaultValue(defaultChartPropertiesMap,
            ChartThemesConstants.BASEFONT_SIZE);
    Font themeTickLabelFont = getFont(
            (JRFont) getDefaultValue(defaultPlotPropertiesMap, ChartThemesConstants.PLOT_TICK_LABEL_FONT),
            tickLabelFont, defaultBaseFontSize);
    scale.setTickLabelFont(themeTickLabelFont);
    scale.setMajorTickStroke(new BasicStroke(1f));
    scale.setMinorTickStroke(new BasicStroke(0.3f));
    scale.setMajorTickPaint(Color.WHITE);
    scale.setMinorTickPaint(Color.WHITE);
    scale.setTickLabelsVisible(true);
    scale.setFirstTickLabelVisible(true);

    dialPlot.addScale(0, scale);

    List<JRMeterInterval> intervals = jrPlot.getIntervals();
    if (intervals != null && intervals.size() > 0) {
        int size = Math.min(3, intervals.size());
        int colorStep = 0;
        if (size > 3)
            colorStep = 255 / (size - 3);

        for (int i = 0; i < size; i++) {
            JRMeterInterval interval = intervals.get(i);
            Range intervalRange = convertRange(interval.getDataRange());
            double intervalLowerBound = ChartThemesUtilities.getTruncatedValue(intervalRange.getLowerBound(),
                    dialUnitScale);
            double intervalUpperBound = ChartThemesUtilities.getTruncatedValue(intervalRange.getUpperBound(),
                    dialUnitScale);

            Color color = i < 3 ? (Color) ChartThemesConstants.AEGEAN_INTERVAL_COLORS.get(i)
                    : new Color(255 - colorStep * (i - 3), 0 + colorStep * (i - 3), 0);

            ScaledDialRange dialRange = new ScaledDialRange(intervalLowerBound, intervalUpperBound,
                    interval.getBackgroundColor() == null ? color : interval.getBackgroundColor(), 12f);
            dialRange.setInnerRadius(0.41);
            dialRange.setOuterRadius(0.41);
            dialPlot.addLayer(dialRange);
        }
    }

    JRValueDisplay display = jrPlot.getValueDisplay();
    String displayVisibility = display != null && getChart().hasProperties()
            ? getChart().getPropertiesMap().getProperty(DefaultChartTheme.PROPERTY_DIAL_VALUE_DISPLAY_VISIBLE)
            : "false";
    if (Boolean.parseBoolean(displayVisibility)) {
        ScaledDialValueIndicator dvi = new ScaledDialValueIndicator(0, dialUnitScale);
        dvi.setBackgroundPaint(ChartThemesConstants.TRANSPARENT_PAINT);
        //         dvi.setFont(JRFontUtil.getAwtFont(jrFont).deriveFont(10f).deriveFont(Font.BOLD));
        dvi.setOutlinePaint(ChartThemesConstants.TRANSPARENT_PAINT);
        dvi.setPaint(Color.WHITE);

        String pattern = display.getMask() != null ? display.getMask() : "#,##0.####";
        if (pattern != null)
            dvi.setNumberFormat(new DecimalFormat(pattern, DecimalFormatSymbols.getInstance(getLocale())));
        dvi.setRadius(0.15);
        dvi.setValueAnchor(RectangleAnchor.CENTER);
        dvi.setTextAnchor(TextAnchor.CENTER);
        //dvi.setTemplateValue(Double.valueOf(getDialTickValue(dialPlot.getValue(0),dialUnitScale)));
        dialPlot.addLayer(dvi);
    }
    String label = getChart().hasProperties()
            ? getChart().getPropertiesMap().getProperty(DefaultChartTheme.PROPERTY_DIAL_LABEL)
            : null;

    if (label != null) {
        JRFont displayFont = jrPlot.getValueDisplay().getFont();
        Font themeDisplayFont = getFont(
                (JRFont) getDefaultValue(defaultPlotPropertiesMap, ChartThemesConstants.PLOT_DISPLAY_FONT),
                displayFont, defaultBaseFontSize);
        if (dialUnitScale < 0)
            label = new MessageFormat(label)
                    .format(new Object[] { String.valueOf(Math.pow(10, dialUnitScale)) });
        else if (dialUnitScale < 3)
            label = new MessageFormat(label).format(new Object[] { "1" });
        else
            label = new MessageFormat(label)
                    .format(new Object[] { String.valueOf((int) Math.pow(10, dialUnitScale - 2)) });

        String[] textLines = label.split("\\n");
        for (int i = 0; i < textLines.length; i++) {
            DialTextAnnotation dialAnnotation = new DialTextAnnotation(textLines[i]);
            dialAnnotation.setFont(themeDisplayFont);
            dialAnnotation.setPaint(Color.WHITE);
            dialAnnotation.setRadius(Math.sin(Math.PI / 4.0) + i / 10.0);
            dialAnnotation.setAnchor(TextAnchor.CENTER);
            dialPlot.addLayer(dialAnnotation);
        }
    }

    //DialPointer needle = new DialPointer.Pointer();
    Paint paint = new Color(191, 48, 0);
    DialPointer needle = new ScaledDialPointer(dialUnitScale, paint, paint);

    needle.setVisible(true);
    needle.setRadius(0.91);
    dialPlot.addLayer(needle);

    DialCap cap = new DialCap();
    cap.setRadius(0.05);
    cap.setFillPaint(Color.DARK_GRAY);
    cap.setOutlinePaint(Color.GRAY);
    cap.setOutlineStroke(new BasicStroke(0.5f));
    dialPlot.setCap(cap);

    JFreeChart jfreeChart = new JFreeChart(evaluateTextExpression(getChart().getTitleExpression()), null,
            dialPlot, getChart().getShowLegend() == null ? false : getChart().getShowLegend());

    // Set all the generic options
    configureChart(jfreeChart, getPlot());

    jfreeChart.setBackgroundPaint(ChartThemesConstants.TRANSPARENT_PAINT);
    jfreeChart.setBorderVisible(false);

    return jfreeChart;

}

From source file:net.sf.fspdfs.chartthemes.spring.EyeCandySixtiesChartTheme.java

public void drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot,
        CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass) {

    // check the value we are plotting...
    Number dataValue = dataset.getValue(row, column);
    if (dataValue == null) {
        return;/*from www  .  j a  v a  2s . c  o  m*/
    }

    double value = dataValue.doubleValue();

    Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(),
            dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset());

    PlotOrientation orientation = plot.getOrientation();

    double barW0 = calculateBarW0(plot, orientation, adjusted, domainAxis, state, row, column);
    double[] barL0L1 = calculateBarL0L1(value);
    if (barL0L1 == null) {
        return; // the bar is not visible
    }

    RectangleEdge edge = plot.getRangeAxisEdge();
    double transL0 = rangeAxis.valueToJava2D(barL0L1[0], adjusted, edge);
    double transL1 = rangeAxis.valueToJava2D(barL0L1[1], adjusted, edge);
    double barL0 = Math.min(transL0, transL1);
    double barLength = Math.abs(transL1 - transL0);

    // draw the bar...
    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 itemPaint = getItemPaint(row, column);
    if (itemPaint instanceof GradientPaint) {
        itemPaint = getGradientPaintTransformer().transform((GradientPaint) itemPaint, bar);
    }
    g2.setPaint(itemPaint);
    g2.fill(bar);

    double x0 = bar.getMinX();
    double x1 = x0 + getXOffset();
    double x2 = bar.getMaxX();
    double x3 = x2 + getXOffset();

    double y0 = bar.getMinY() - getYOffset();
    double y1 = bar.getMinY();
    double y2 = bar.getMaxY() - getYOffset();
    double y3 = bar.getMaxY();

    GeneralPath bar3dRight = null;
    GeneralPath bar3dTop = null;
    if (barLength > 0.0) {
        bar3dRight = new GeneralPath();
        bar3dRight.moveTo((float) x2, (float) y3);
        bar3dRight.lineTo((float) x2, (float) y1);
        bar3dRight.lineTo((float) x3, (float) y0);
        bar3dRight.lineTo((float) x3, (float) y2);
        bar3dRight.closePath();

        if (itemPaint instanceof Color) {
            g2.setPaint(((Color) itemPaint).darker());
        } else if (itemPaint instanceof GradientPaint) {
            GradientPaint gp = (GradientPaint) itemPaint;
            g2.setPaint(new StandardGradientPaintTransformer().transform(new GradientPaint(gp.getPoint1(),
                    gp.getColor1().darker(), gp.getPoint2(), gp.getColor2().darker(), gp.isCyclic()),
                    bar3dRight));
        }
        g2.fill(bar3dRight);
    }

    bar3dTop = new GeneralPath();
    bar3dTop.moveTo((float) x0, (float) y1);
    bar3dTop.lineTo((float) x1, (float) y0);
    bar3dTop.lineTo((float) x3, (float) y0);
    bar3dTop.lineTo((float) x2, (float) y1);
    bar3dTop.closePath();
    g2.fill(bar3dTop);

    if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) {
        g2.setStroke(getItemOutlineStroke(row, column));
        g2.setPaint(getItemOutlinePaint(row, column));
        g2.draw(bar);
        if (bar3dRight != null) {
            g2.draw(bar3dRight);
        }
        if (bar3dTop != null) {
            g2.draw(bar3dTop);
        }
    }

    CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column);
    if (generator != null && isItemLabelVisible(row, column)) {
        drawItemLabel(g2, dataset, row, column, plot, generator, bar, (value < 0.0));
    }

    // add an item entity, if this information is being collected
    EntityCollection entities = state.getEntityCollection();
    if (entities != null) {
        GeneralPath barOutline = new GeneralPath();
        barOutline.moveTo((float) x0, (float) y3);
        barOutline.lineTo((float) x0, (float) y1);
        barOutline.lineTo((float) x1, (float) y0);
        barOutline.lineTo((float) x3, (float) y0);
        barOutline.lineTo((float) x3, (float) y2);
        barOutline.lineTo((float) x2, (float) y3);
        barOutline.closePath();
        addItemEntity(entities, dataset, row, column, barOutline);
    }
}

From source file:net.sf.jasperreports.chartthemes.spring.EyeCandySixtiesChartTheme.java

@Override
public void drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot,
        CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass) {

    // check the value we are plotting...
    Number dataValue = dataset.getValue(row, column);
    if (dataValue == null) {
        return;//www .ja v  a 2  s  . c  o  m
    }

    double value = dataValue.doubleValue();

    Rectangle2D adjusted = new Rectangle2D.Double(dataArea.getX(), dataArea.getY() + getYOffset(),
            dataArea.getWidth() - getXOffset(), dataArea.getHeight() - getYOffset());

    PlotOrientation orientation = plot.getOrientation();

    double barW0 = calculateBarW0(plot, orientation, adjusted, domainAxis, state, row, column);
    double[] barL0L1 = calculateBarL0L1(value);
    if (barL0L1 == null) {
        return; // the bar is not visible
    }

    RectangleEdge edge = plot.getRangeAxisEdge();
    double transL0 = rangeAxis.valueToJava2D(barL0L1[0], adjusted, edge);
    double transL1 = rangeAxis.valueToJava2D(barL0L1[1], adjusted, edge);
    double barL0 = Math.min(transL0, transL1);
    double barLength = Math.abs(transL1 - transL0);

    // draw the bar...
    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 itemPaint = getItemPaint(row, column);
    if (itemPaint instanceof GradientPaint) {
        itemPaint = getGradientPaintTransformer().transform((GradientPaint) itemPaint, bar);
    }
    g2.setPaint(itemPaint);
    g2.fill(bar);

    double x0 = bar.getMinX();
    double x1 = x0 + getXOffset();
    double x2 = bar.getMaxX();
    double x3 = x2 + getXOffset();

    double y0 = bar.getMinY() - getYOffset();
    double y1 = bar.getMinY();
    double y2 = bar.getMaxY() - getYOffset();
    double y3 = bar.getMaxY();

    GeneralPath bar3dRight = null;
    GeneralPath bar3dTop = null;
    if (barLength > 0.0) {
        bar3dRight = new GeneralPath();
        bar3dRight.moveTo((float) x2, (float) y3);
        bar3dRight.lineTo((float) x2, (float) y1);
        bar3dRight.lineTo((float) x3, (float) y0);
        bar3dRight.lineTo((float) x3, (float) y2);
        bar3dRight.closePath();

        if (itemPaint instanceof Color) {
            g2.setPaint(((Color) itemPaint).darker());
        } else if (itemPaint instanceof GradientPaint) {
            GradientPaint gp = (GradientPaint) itemPaint;
            g2.setPaint(new StandardGradientPaintTransformer().transform(new GradientPaint(gp.getPoint1(),
                    gp.getColor1().darker(), gp.getPoint2(), gp.getColor2().darker(), gp.isCyclic()),
                    bar3dRight));
        }
        g2.fill(bar3dRight);
    }

    bar3dTop = new GeneralPath();
    bar3dTop.moveTo((float) x0, (float) y1);
    bar3dTop.lineTo((float) x1, (float) y0);
    bar3dTop.lineTo((float) x3, (float) y0);
    bar3dTop.lineTo((float) x2, (float) y1);
    bar3dTop.closePath();
    g2.fill(bar3dTop);

    if (isDrawBarOutline() && state.getBarWidth() > BAR_OUTLINE_WIDTH_THRESHOLD) {
        g2.setStroke(getItemOutlineStroke(row, column));
        g2.setPaint(getItemOutlinePaint(row, column));
        g2.draw(bar);
        if (bar3dRight != null) {
            g2.draw(bar3dRight);
        }
        if (bar3dTop != null) {
            g2.draw(bar3dTop);
        }
    }

    CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column);
    if (generator != null && isItemLabelVisible(row, column)) {
        drawItemLabel(g2, dataset, row, column, plot, generator, bar, (value < 0.0));
    }

    // add an item entity, if this information is being collected
    EntityCollection entities = state.getEntityCollection();
    if (entities != null) {
        GeneralPath barOutline = new GeneralPath();
        barOutline.moveTo((float) x0, (float) y3);
        barOutline.lineTo((float) x0, (float) y1);
        barOutline.lineTo((float) x1, (float) y0);
        barOutline.lineTo((float) x3, (float) y0);
        barOutline.lineTo((float) x3, (float) y2);
        barOutline.lineTo((float) x2, (float) y3);
        barOutline.closePath();
        addItemEntity(entities, dataset, row, column, barOutline);
    }
}