/**
* Draws an item label.
*
* @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).
*/
private void drawAdditionalItemLabel(
Graphics2D g2,
PlotOrientation orientation,
XYDataset dataset,
int series,
int item,
double x,
double y) {
if (this.additionalItemLabelGenerator == null) {
return;
}
Font labelFont = getItemLabelFont(series, item);
Paint paint = getItemLabelPaint(series, item);
g2.setFont(labelFont);
g2.setPaint(paint);
String label = this.additionalItemLabelGenerator.generateLabel(dataset, series, item);
ItemLabelPosition position = getNegativeItemLabelPosition(series, item);
Point2D anchorPoint =
calculateLabelAnchorPoint(position.getItemLabelAnchor(), x, y, orientation);
TextUtilities.drawRotatedString(
label,
g2,
(float) anchorPoint.getX(),
(float) anchorPoint.getY(),
position.getTextAnchor(),
position.getAngle(),
position.getRotationAnchor());
}
/**
* Draws an item label.
*
* @param g2 the graphics device.
* @param orientation the orientation.
* @param dataset the dataset.
* @param row the row.
* @param column the column.
* @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,
CategoryDataset dataset,
int row,
int column,
double x,
double y,
boolean negative) {
CategoryItemLabelGenerator generator = getItemLabelGenerator(row, column);
if (generator != null) {
Font labelFont = getItemLabelFont(row, column);
Paint paint = getItemLabelPaint(row, column);
g2.setFont(labelFont);
g2.setPaint(paint);
String label = generator.generateLabel(dataset, row, column);
ItemLabelPosition position = null;
if (!negative) {
position = getPositiveItemLabelPosition(row, column);
} else {
position = getNegativeItemLabelPosition(row, column);
}
Point2D anchorPoint =
calculateLabelAnchorPoint(position.getItemLabelAnchor(), x, y, orientation);
TextUtilities.drawRotatedString(
label,
g2,
(float) anchorPoint.getX(),
(float) anchorPoint.getY(),
position.getTextAnchor(),
position.getAngle(),
position.getRotationAnchor());
}
}
/**
* 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.
*
* @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} 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;
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());
}
}