📄 xybarrenderer.java
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* {@link RendererChangeEvent} to all registered listeners.
*
* @param draw the flag.
*/
public void setDrawBarOutline(boolean draw) {
this.drawBarOutline = draw;
notifyListeners(new RendererChangeEvent(this));
}
/**
* Returns the gradient paint transformer (an object used to transform gradient paint objects
* to fit each bar.
*
* @return A transformer (<code>null</code> possible).
*/
public GradientPaintTransformer getGradientPaintTransformer() {
return this.gradientPaintTransformer;
}
/**
* Sets the gradient paint transformer and sends a {@link RendererChangeEvent} to all registered
* listeners.
*
* @param transformer the transformer (<code>null</code> permitted).
*/
public void setGradientPaintTransformer(GradientPaintTransformer transformer) {
this.gradientPaintTransformer = transformer;
notifyListeners(new RendererChangeEvent(this));
}
/**
* Initialises the renderer and returns a state object that should be passed to all subsequent
* calls to the drawItem() method. Here we calculate the Java2D y-coordinate for zero, since
* all the bars have their bases fixed at zero.
*
* @param g2 the graphics device.
* @param dataArea the area inside the axes.
* @param plot the plot.
* @param dataset the data.
* @param info an optional info collection object to return data back to the caller.
*
* @return A state object.
*/
public XYItemRendererState initialise(Graphics2D g2,
Rectangle2D dataArea,
XYPlot plot,
XYDataset dataset,
PlotRenderingInfo info) {
XYBarRendererState state = new XYBarRendererState(info);
ValueAxis rangeAxis = plot.getRangeAxisForDataset(plot.indexOf(dataset));
state.setG2Base(rangeAxis.valueToJava2D(this.base, dataArea, plot.getRangeAxisEdge()));
return state;
}
/**
* Draws the visual representation of a single data item.
*
* @param g2 the graphics device.
* @param state the renderer state.
* @param dataArea the area within which the plot is being drawn.
* @param info collects information about the drawing.
* @param plot the plot (can be used to obtain standard color information etc).
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
* @param dataset the dataset.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
* @param crosshairState crosshair information for the plot (<code>null</code> permitted).
* @param pass the pass index.
*/
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 value0;
double value1;
if (this.useYInterval) {
value0 = intervalDataset.getStartYValue(series, item);
value1 = intervalDataset.getEndYValue(series, item);
}
else {
value0 = this.base;
value1 = intervalDataset.getYValue(series, item);
}
if (Double.isNaN(value0) || Double.isNaN(value1)) {
return;
}
double translatedValue0 = rangeAxis.valueToJava2D(
value0, dataArea, plot.getRangeAxisEdge()
);
double translatedValue1 = rangeAxis.valueToJava2D(
value1, dataArea, plot.getRangeAxisEdge()
);
RectangleEdge location = plot.getDomainAxisEdge();
Number startXNumber = intervalDataset.getStartX(series, item);
if (startXNumber == null) {
return;
}
double translatedStartX = domainAxis.valueToJava2D(
startXNumber.doubleValue(), dataArea, location
);
Number endXNumber = intervalDataset.getEndX(series, item);
if (endXNumber == null) {
return;
}
double translatedEndX = domainAxis.valueToJava2D(
endXNumber.doubleValue(), dataArea, location
);
double translatedWidth = Math.max(1, Math.abs(translatedEndX - translatedStartX));
double translatedHeight = Math.abs(translatedValue1 - translatedValue0);
if (getMargin() > 0.0) {
double cut = translatedWidth * getMargin();
translatedWidth = translatedWidth - cut;
translatedStartX = translatedStartX + cut / 2;
}
Rectangle2D bar = null;
PlotOrientation orientation = plot.getOrientation();
if (orientation == PlotOrientation.HORIZONTAL) {
bar = new Rectangle2D.Double(
Math.min(translatedValue0, translatedValue1), translatedEndX,
translatedHeight, translatedWidth
);
}
else if (orientation == PlotOrientation.VERTICAL) {
bar = new Rectangle2D.Double(
translatedStartX, Math.min(translatedValue0, translatedValue1),
translatedWidth, translatedHeight
);
}
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(translatedEndX - translatedStartX) > 3) {
Stroke stroke = getItemOutlineStroke(series, item);
Paint paint = getItemOutlinePaint(series, item);
if (stroke != null && paint != null) {
g2.setStroke(stroke);
g2.setPaint(paint);
g2.draw(bar);
}
}
// add an entity for the item...
if (info != null) {
EntityCollection entities = info.getOwner().getEntityCollection();
if (entities != null) {
String tip = null;
XYToolTipGenerator generator = getToolTipGenerator(series, item);
if (generator != null) {
tip = generator.generateToolTip(dataset, series, item);
}
String url = null;
if (getURLGenerator() != null) {
url = getURLGenerator().generateURL(dataset, series, item);
}
XYItemEntity entity = new XYItemEntity(bar, dataset, series, item, tip, url);
entities.addEntity(entity);
}
}
}
/**
* Returns a clone of the renderer.
*
* @return A clone.
*
* @throws CloneNotSupportedException if the renderer cannot be cloned.
*/
public Object clone() throws CloneNotSupportedException {
XYBarRenderer result = (XYBarRenderer) super.clone();
if (this.gradientPaintTransformer != null) {
if (this.gradientPaintTransformer instanceof PublicCloneable) {
PublicCloneable pc = (PublicCloneable) this.gradientPaintTransformer;
result.gradientPaintTransformer = (GradientPaintTransformer) pc.clone();
}
else {
throw new CloneNotSupportedException(
"GradientPaintTransformer doesn't implement PublicCloneable"
);
}
}
return result;
}
/**
* Tests this renderer for equality with an arbitrary object.
*
* @param obj the object to test against (<code>null</code> permitted).
*
* @return A boolean.
*/
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof XYBarRenderer)) {
return false;
}
if (!super.equals(obj)) {
return false;
}
XYBarRenderer that = (XYBarRenderer) obj;
if (this.base != that.base) {
return false;
}
if (this.drawBarOutline != that.drawBarOutline) {
return false;
}
if (this.margin != that.margin) {
return false;
}
if (this.useYInterval != that.useYInterval) {
return false;
}
if (!ObjectUtils.equal(this.gradientPaintTransformer, that.gradientPaintTransformer)) {
return false;
}
return true;
}
}
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