 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) {
boolean horiz;
PlotOrientation orientation = plot.getOrientation();
if (orientation == PlotOrientation.HORIZONTAL) {
horiz = true;
}
else if (orientation == PlotOrientation.VERTICAL) {
horiz = false;
}
else {
return;
}
// setup for collecting optional entity info...
EntityCollection entities = null;
if (info != null) {
entities = info.getOwner().getEntityCollection();
}
OHLCDataset highLowData = (OHLCDataset) dataset;
double x = highLowData.getXValue(series, item);
double yHigh = highLowData.getHighValue(series, item);
double yLow = highLowData.getLowValue(series, item);
double yOpen = highLowData.getOpenValue(series, item);
double yClose = highLowData.getCloseValue(series, item);
RectangleEdge domainEdge = plot.getDomainAxisEdge();
double xx = domainAxis.valueToJava2D(x, dataArea, domainEdge);
RectangleEdge edge = plot.getRangeAxisEdge();
double yyHigh = rangeAxis.valueToJava2D(yHigh, dataArea, edge);
double yyLow = rangeAxis.valueToJava2D(yLow, dataArea, edge);
double yyOpen = rangeAxis.valueToJava2D(yOpen, dataArea, edge);
double yyClose = rangeAxis.valueToJava2D(yClose, dataArea, edge);
double volumeWidth;
double stickWidth;
if (this.candleWidth > 0) {
// These are deliberately not bounded to minimums/maxCandleWidth to
// retain old behaviour.
volumeWidth = this.candleWidth;
stickWidth = this.candleWidth;
}
else {
double xxWidth = 0;
int itemCount;
switch (this.autoWidthMethod) {
case WIDTHMETHOD_AVERAGE:
itemCount = highLowData.getItemCount(series);
if (horiz) {
xxWidth = dataArea.getHeight() / itemCount;
}
else {
xxWidth = dataArea.getWidth() / itemCount;
}
break;
case WIDTHMETHOD_SMALLEST:
// Note: It would be nice to pre-calculate this per series
itemCount = highLowData.getItemCount(series);
double lastPos = -1;
xxWidth = dataArea.getWidth();
for (int i = 0; i < itemCount; i++) {
double pos = domainAxis.valueToJava2D(
highLowData.getXValue(series, i), dataArea,
domainEdge);
if (lastPos != -1) {
xxWidth = Math.min(xxWidth,
Math.abs(pos - lastPos));
}
lastPos = pos;
}
break;
case WIDTHMETHOD_INTERVALDATA:
IntervalXYDataset intervalXYData
= (IntervalXYDataset) dataset;
double startPos = domainAxis.valueToJava2D(
intervalXYData.getStartXValue(series, item),
dataArea, plot.getDomainAxisEdge());
double endPos = domainAxis.valueToJava2D(
intervalXYData.getEndXValue(series, item),
dataArea, plot.getDomainAxisEdge());
xxWidth = Math.abs(endPos - startPos);
break;
}
xxWidth -= 2 * this.autoWidthGap;
xxWidth *= this.autoWidthFactor;
xxWidth = Math.min(xxWidth, this.maxCandleWidth);
volumeWidth = Math.max(Math.min(1, this.maxCandleWidth), xxWidth);
stickWidth = Math.max(Math.min(3, this.maxCandleWidth), xxWidth);
}
Paint p = getItemPaint(series, item);
Paint outlinePaint = null;
if (this.useOutlinePaint) {
outlinePaint = getItemOutlinePaint(series, item);
}
Stroke s = getItemStroke(series, item);
g2.setStroke(s);
if (this.drawVolume) {
int volume = (int) highLowData.getVolumeValue(series, item);
double volumeHeight = volume / this.maxVolume;
double min, max;
if (horiz) {
min = dataArea.getMinX();
max = dataArea.getMaxX();
}
else {
min = dataArea.getMinY();
max = dataArea.getMaxY();
}
double zzVolume = volumeHeight * (max - min);
g2.setPaint(getVolumePaint());
Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, 0.3f));
if (horiz) {
g2.fill(new Rectangle2D.Double(min, xx - volumeWidth / 2,
zzVolume, volumeWidth));
}
else {
g2.fill(new Rectangle2D.Double(xx - volumeWidth / 2,
max - zzVolume, volumeWidth, zzVolume));
}
g2.setComposite(originalComposite);
}
if (this.useOutlinePaint) {
g2.setPaint(outlinePaint);
}
else {
g2.setPaint(p);
}
double yyMaxOpenClose = Math.max(yyOpen, yyClose);
double yyMinOpenClose = Math.min(yyOpen, yyClose);
double maxOpenClose = Math.max(yOpen, yClose);
double minOpenClose = Math.min(yOpen, yClose);
// draw the upper shadow
if (yHigh > maxOpenClose) {
if (horiz) {
g2.draw(new Line2D.Double(yyHigh, xx, yyMaxOpenClose, xx));
}
else {
g2.draw(new Line2D.Double(xx, yyHigh, xx, yyMaxOpenClose));
}
}
// draw the lower shadow
if (yLow < minOpenClose) {
if (horiz) {
g2.draw(new Line2D.Double(yyLow, xx, yyMinOpenClose, xx));
}
else {
g2.draw(new Line2D.Double(xx, yyLow, xx, yyMinOpenClose));
}
}
// draw the body
Rectangle2D body = null;
Rectangle2D hotspot = null;
double length = Math.abs(yyHigh - yyLow);
double base = Math.min(yyHigh, yyLow);
if (horiz) {
body = new Rectangle2D.Double(yyMinOpenClose, xx - stickWidth / 2,
yyMaxOpenClose - yyMinOpenClose, stickWidth);
hotspot = new Rectangle2D.Double(base, xx - stickWidth / 2,
length, stickWidth);
}
else {
body = new Rectangle2D.Double(xx - stickWidth / 2, yyMinOpenClose,
stickWidth, yyMaxOpenClose - yyMinOpenClose);
hotspot = new Rectangle2D.Double(xx - stickWidth / 2,
base, stickWidth, length);
}
if (yClose > yOpen) {
if (this.upPaint != null) {
g2.setPaint(this.upPaint);
}
else {
g2.setPaint(p);
}
g2.fill(body);
}
else {
if (this.downPaint != null) {
g2.setPaint(this.downPaint);
}
else {
g2.setPaint(p);
}
g2.fill(body);
}
if (this.useOutlinePaint) {
g2.setPaint(outlinePaint);
}
else {
g2.setPaint(p);
}
g2.draw(body);
// add an entity for the item...
if (entities != null) {
addEntity(entities, hotspot, dataset, series, item, 0.0, 0.0);
}
}
Draws the visual representation of a single data item. |
org.jfree.chart.renderer.AbstractRenderer
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