 public void drawItem(Graphics2D g2,
XYItemRendererState state,
Rectangle2D dataArea,
PlotRenderingInfo info,
XYPlot plot,
ValueAxis domainAxis,
ValueAxis rangeAxis,
XYDataset dataset,
int series,
int item,
CrosshairState crosshairState,
int pass) {
IntervalXYDataset intervalDataset = (IntervalXYDataset) dataset;
double y0;
double y1;
if (getUseYInterval()) {
y0 = intervalDataset.getStartYValue(series, item);
y1 = intervalDataset.getEndYValue(series, item);
}
else {
y0 = getBase();
y1 = intervalDataset.getYValue(series, item);
}
if (Double.isNaN(y0) || Double.isNaN(y1)) {
return;
}
double yy0 = rangeAxis.valueToJava2D(y0, dataArea,
plot.getRangeAxisEdge());
double yy1 = rangeAxis.valueToJava2D(y1, dataArea,
plot.getRangeAxisEdge());
RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
double x0 = intervalDataset.getStartXValue(series, item);
double xx0 = domainAxis.valueToJava2D(x0, dataArea, xAxisLocation);
double x1 = intervalDataset.getEndXValue(series, item);
double xx1 = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
double intervalW = xx1 - xx0; // this may be negative
double baseX = xx0;
if (this.centerBarAtStartValue) {
baseX = baseX - intervalW / 2.0;
}
double m = getMargin();
if (m > 0.0) {
double cut = intervalW * getMargin();
intervalW = intervalW - cut;
baseX = baseX + (cut / 2);
}
double intervalH = Math.abs(yy0 - yy1); // we don't need the sign
PlotOrientation orientation = plot.getOrientation();
int numSeries = dataset.getSeriesCount();
double seriesBarWidth = intervalW / numSeries; // may be negative
Rectangle2D bar = null;
if (orientation == PlotOrientation.HORIZONTAL) {
double barY0 = baseX + (seriesBarWidth * series);
double barY1 = barY0 + seriesBarWidth;
double rx = Math.min(yy0, yy1);
double rw = intervalH;
double ry = Math.min(barY0, barY1);
double rh = Math.abs(barY1 - barY0);
bar = new Rectangle2D.Double(rx, ry, rw, rh);
}
else if (orientation == PlotOrientation.VERTICAL) {
double barX0 = baseX + (seriesBarWidth * series);
double barX1 = barX0 + seriesBarWidth;
double rx = Math.min(barX0, barX1);
double rw = Math.abs(barX1 - barX0);
double ry = Math.min(yy0, yy1);
double rh = intervalH;
bar = new Rectangle2D.Double(rx, ry, rw, rh);
}
Paint itemPaint = getItemPaint(series, item);
if (getGradientPaintTransformer()
!= null && itemPaint instanceof GradientPaint) {
GradientPaint gp = (GradientPaint) itemPaint;
itemPaint = getGradientPaintTransformer().transform(gp, bar);
}
g2.setPaint(itemPaint);
g2.fill(bar);
if (isDrawBarOutline() && Math.abs(seriesBarWidth) > 3) {
g2.setStroke(getItemOutlineStroke(series, item));
g2.setPaint(getItemOutlinePaint(series, item));
g2.draw(bar);
}
if (isItemLabelVisible(series, item)) {
XYItemLabelGenerator generator = getItemLabelGenerator(series,
item);
drawItemLabel(g2, dataset, series, item, plot, generator, bar,
y1 < 0.0);
}
// add an entity for the item...
if (info != null) {
EntityCollection entities = info.getOwner().getEntityCollection();
if (entities != null) {
addEntity(entities, bar, dataset, series, item,
bar.getCenterX(), bar.getCenterY());
}
}
}
Draws the visual representation of a single data item. This method
is mostly copied from the superclass, the change is that in the
calculated space for a singe bar we draw bars for each series next to
each other. The width of each bar is the available width divided by
the number of series. Bars for each series are drawn in order left to
right. |
org.jfree.chart.renderer.AbstractRenderer
Save This Page