Example usage for org.jfree.chart.labels XYItemLabelGenerator generateLabel

Introduction

In this page you can find the example usage for org.jfree.chart.labels XYItemLabelGenerator generateLabel.

Prototype

public String generateLabel(XYDataset dataset, int series, int item);

Source Link

Document

Generates a label for the specified item.

Usage

From source file:net.sf.mzmine.modules.visualization.scatterplot.scatterplotchart.ScatterPlotRenderer.java

/**
 * Draws an item label./*  ww  w  .java 2 s .c  o  m*/
 * 
 * @param g2
 *            the graphics device.
 * @param orientation
 *            the orientation.
 * @param dataset
 *            the dataset.
 * @param series
 *            the series index (zero-based).
 * @param item
 *            the item index (zero-based).
 * @param x
 *            the x coordinate (in Java2D space).
 * @param y
 *            the y coordinate (in Java2D space).
 * @param negative
 *            indicates a negative value (which affects the item label
 *            position).
 */
protected void drawItemLabel(Graphics2D g2, PlotOrientation orientation, XYDataset dataset, int series,
        int item, double x, double y, boolean negative) {

    XYItemLabelGenerator generator = getItemLabelGenerator(series, item);
    Font labelFont = getItemLabelFont(series, item);
    g2.setFont(labelFont);
    String label = generator.generateLabel(dataset, series, item);

    if ((label == null) || (label.length() == 0))
        return;

    // get the label position..
    ItemLabelPosition position = null;
    if (!negative) {
        position = getPositiveItemLabelPosition(series, item);
    } else {
        position = getNegativeItemLabelPosition(series, item);
    }

    // work out the label anchor point...
    Point2D anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), x, y, orientation);

    FontMetrics metrics = g2.getFontMetrics(labelFont);
    int width = SwingUtilities.computeStringWidth(metrics, label) + 2;
    int height = metrics.getHeight();

    int X = (int) (anchorPoint.getX() - (width / 2));
    int Y = (int) (anchorPoint.getY() - (height));

    g2.setPaint(searchColor);
    g2.fillRect(X, Y, width, height);

    super.drawItemLabel(g2, orientation, dataset, series, item, x, y, negative);

}

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From source file:net.sf.mzmine.modules.visualization.metamsecorrelate.visual.pseudospectra.PseudoSpectraRenderer.java

@Override
protected void drawItemLabel(Graphics2D g2, XYDataset dataset, int series, int item, XYPlot plot,
        XYItemLabelGenerator generator, Rectangle2D bar, boolean negative) {
    //super.drawItemLabel(g2, dataset, series, item, plot, generator, bar, negative);  

    if (generator != null) {
        String label = generator.generateLabel(dataset, series, item);

        if (label != null) {
            Font labelFont = getItemLabelFont(series, item);
            Paint paint = getItemLabelPaint(series, item);
            g2.setFont(labelFont);/*from   www  .  j  av a2s.  c o  m*/
            g2.setPaint(paint);

            // get the label position..
            ItemLabelPosition position;
            if (!negative) {
                position = getPositiveItemLabelPosition(series, item);
            } else {
                position = getNegativeItemLabelPosition(series, item);
            }

            // work out the label anchor point...
            Point2D anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), bar,
                    plot.getOrientation());

            // split by \n
            String symbol = "\n";
            String[] splitted = label.split(symbol);

            if (splitted.length > 1) {
                FontRenderContext frc = g2.getFontRenderContext();
                GlyphVector gv = g2.getFont().createGlyphVector(frc, "Fg,");
                int height = 4 + (int) gv.getPixelBounds(null, 0, 0).getHeight();
                // draw more than one row
                for (int i = 0; i < splitted.length; i++) {
                    int offset = -height * (splitted.length - i - 1);
                    TextUtilities.drawRotatedString(splitted[i], g2, (float) anchorPoint.getX(),
                            (float) anchorPoint.getY() + offset, position.getTextAnchor(), position.getAngle(),
                            position.getRotationAnchor());
                }
            } else {
                // one row 
                TextUtilities.drawRotatedString(label, g2, (float) anchorPoint.getX(),
                        (float) anchorPoint.getY(), position.getTextAnchor(), position.getAngle(),
                        position.getRotationAnchor());
            }
        }
    }

}

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From source file:com.newatlanta.bluedragon.CustomClusteredXYBarRenderer.java

private void drawItemLabel(Graphics2D g2, PlotOrientation orientation, XYDataset dataset, int series, int item,
        Rectangle2D bar, boolean negative) {

    XYItemLabelGenerator generator = getItemLabelGenerator(series, item);
    if (generator == null)
        return;//from   www .j  a  v  a2 s .com

    String label = generator.generateLabel(dataset, series, item);
    if (label == null) {
        return; // nothing to do
    }

    Font labelFont = getItemLabelFont(series, item);
    g2.setFont(labelFont);
    Paint paint = getItemLabelPaint(series, item);
    g2.setPaint(paint);

    // find out where to place the label...
    ItemLabelPosition position = null;
    if (!negative) {
        position = getPositiveItemLabelPosition(series, item);
    } else {
        position = getNegativeItemLabelPosition(series, item);
    }

    // work out the label anchor point...
    Point2D anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), bar, orientation);

    TextUtilities.drawRotatedString(label, g2, (float) anchorPoint.getX(), (float) anchorPoint.getY(),
            position.getTextAnchor(), position.getAngle(), position.getRotationAnchor());
}

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From source file:edu.dlnu.liuwenpeng.render.XYBarRenderer.java

/**
 * Draws an item label.  This method is provided as an alternative to
 * {@link #drawItemLabel(Graphics2D, PlotOrientation, XYDataset, int, int, 
 * double, double, boolean)} so that the bar can be used to calculate the 
 * label anchor point. //from   ww  w. j  av  a  2s.c  o  m
 * 
 * @param g2  the graphics device.
 * @param dataset  the dataset.
 * @param series  the series index.
 * @param item  the item index.
 * @param plot  the plot.
 * @param generator  the label generator (<code>null</code> permitted, in 
 *         which case the method does nothing, just returns).
 * @param bar  the bar.
 * @param negative  a flag indicating a negative value.
 */
protected void drawItemLabel(Graphics2D g2, XYDataset dataset, int series, int item, XYPlot plot,
        XYItemLabelGenerator generator, Rectangle2D bar, boolean negative) {

    if (generator == null) {
        return; // nothing to do
    }
    String label = generator.generateLabel(dataset, series, item);
    if (label == null) {
        return; // nothing to do   
    }

    Font labelFont = getItemLabelFont(series, item);
    g2.setFont(labelFont);
    Paint paint = getItemLabelPaint(series, item);
    g2.setPaint(paint);

    // find out where to place the label...
    ItemLabelPosition position = null;
    if (!negative) {
        position = getPositiveItemLabelPosition(series, item);
    } else {
        position = getNegativeItemLabelPosition(series, item);
    }

    // work out the label anchor point...
    Point2D anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), bar, plot.getOrientation());

    if (isInternalAnchor(position.getItemLabelAnchor())) {
        Shape bounds = TextUtilities.calculateRotatedStringBounds(label, g2, (float) anchorPoint.getX(),
                (float) anchorPoint.getY(), position.getTextAnchor(), position.getAngle(),
                position.getRotationAnchor());

        if (bounds != null) {
            if (!bar.contains(bounds.getBounds2D())) {
                if (!negative) {
                    position = getPositiveItemLabelPositionFallback();
                } else {
                    position = getNegativeItemLabelPositionFallback();
                }
                if (position != null) {
                    anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), bar,
                            plot.getOrientation());
                }
            }
        }

    }

    if (position != null) {
        TextUtilities.drawRotatedString(label, g2, (float) anchorPoint.getX(), (float) anchorPoint.getY(),
                position.getTextAnchor(), position.getAngle(), position.getRotationAnchor());
    }
}

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From source file:edu.dlnu.liuwenpeng.render.NewXYBarRenderer.java

/**    
* Draws an item label.  This method is provided as an alternative to    
* {@link #drawItemLabel(Graphics2D, PlotOrientation, XYDataset, int, int,     
* double, double, boolean)} so that the bar can be used to calculate the     
* label anchor point.     //w w  w. ja  v a  2  s .  c o m
*     
* @param g2  the graphics device.    
* @param dataset  the dataset.    
* @param series  the series index.    
* @param item  the item index.    
* @param plot  the plot.    
* @param generator  the label generator (<code>null</code> permitted, in     
*         which case the method does nothing, just returns).    
* @param bar  the bar.    
* @param negative  a flag indicating a negative value.    
*/
protected void drawItemLabel(Graphics2D g2, XYDataset dataset, int series, int item, XYPlot plot,
        XYItemLabelGenerator generator, Rectangle2D bar, boolean negative) {

    if (generator == null) {
        return; // nothing to do    
    }
    String label = generator.generateLabel(dataset, series, item);
    if (label == null) {
        return; // nothing to do       
    }

    Font labelFont = getItemLabelFont(series, item);
    g2.setFont(labelFont);
    Paint paint = getItemLabelPaint(series, item);
    g2.setPaint(paint);

    // find out where to place the label...    
    ItemLabelPosition position = null;
    if (!negative) {
        position = getPositiveItemLabelPosition(series, item);
    } else {
        position = getNegativeItemLabelPosition(series, item);
    }

    // work out the label anchor point...    
    Point2D anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), bar, plot.getOrientation());

    if (isInternalAnchor(position.getItemLabelAnchor())) {
        Shape bounds = TextUtilities.calculateRotatedStringBounds(label, g2, (float) anchorPoint.getX(),
                (float) anchorPoint.getY(), position.getTextAnchor(), position.getAngle(),
                position.getRotationAnchor());

        if (bounds != null) {
            if (!bar.contains(bounds.getBounds2D())) {
                if (!negative) {
                    position = getPositiveItemLabelPositionFallback();
                } else {
                    position = getNegativeItemLabelPositionFallback();
                }
                if (position != null) {
                    anchorPoint = calculateLabelAnchorPoint(position.getItemLabelAnchor(), bar,
                            plot.getOrientation());
                }
            }
        }

    }

    if (position != null) {
        TextUtilities.drawRotatedString(label, g2, (float) anchorPoint.getX(), (float) anchorPoint.getY(),
                position.getTextAnchor(), position.getAngle(), position.getRotationAnchor());
    }
}

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