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org.jfree.chart.renderer.xy
Class XYBarRenderer

java.lang.Object
  extended by org.jfree.chart.renderer.AbstractRenderer
      extended by org.jfree.chart.renderer.xy.AbstractXYItemRenderer
          extended by org.jfree.chart.renderer.xy.XYBarRenderer
All Implemented Interfaces:
java.io.Serializable, java.lang.Cloneable, LegendItemSource, XYItemRenderer, org.jfree.util.PublicCloneable
Direct Known Subclasses:
ClusteredXYBarRenderer, StackedXYBarRenderer
public class XYBarRenderer
extends AbstractXYItemRenderer
implements XYItemRenderer, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

A renderer that draws bars on an XYPlot (requires an IntervalXYDataset).

See Also:
Serialized Form

Nested Class Summary
protected  class XYBarRenderer.XYBarRendererState
          The state class used by this renderer.
 
Field Summary
 
Fields inherited from class org.jfree.chart.renderer.AbstractRenderer
DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, DEFAULT_PAINT, DEFAULT_SHAPE, DEFAULT_STROKE, DEFAULT_VALUE_LABEL_FONT, DEFAULT_VALUE_LABEL_PAINT, ZERO
 
Constructor Summary
XYBarRenderer()
          The default constructor.
XYBarRenderer(double margin)
          Constructs a new renderer.
 
Method Summary
 java.lang.Object clone()
          Returns a clone of the renderer.
 void drawItem(java.awt.Graphics2D g2, XYItemRendererState state, java.awt.geom.Rectangle2D dataArea, PlotRenderingInfo info, XYPlot plot, ValueAxis domainAxis, ValueAxis rangeAxis, XYDataset dataset, int series, int item, CrosshairState crosshairState, int pass)
          Draws the visual representation of a single data item.
protected  void drawItemLabel(java.awt.Graphics2D g2, XYDataset dataset, int series, int item, XYPlot plot, XYItemLabelGenerator generator, java.awt.geom.Rectangle2D bar, boolean negative)
          Draws an item label.
 boolean equals(java.lang.Object obj)
          Tests this renderer for equality with an arbitrary object.
 Range findDomainBounds(XYDataset dataset)
          Returns the lower and upper bounds (range) of the x-values in the specified dataset.
 double getBase()
          Returns the base value for the bars.
 org.jfree.ui.GradientPaintTransformer getGradientPaintTransformer()
          Returns the gradient paint transformer (an object used to transform gradient paint objects to fit each bar).
 java.awt.Shape getLegendBar()
          Returns the shape used to represent bars in each legend item.
 LegendItem getLegendItem(int datasetIndex, int series)
          Returns a default legend item for the specified series.
 double getMargin()
          Returns the margin which is a percentage amount by which the bars are trimmed.
 ItemLabelPosition getNegativeItemLabelPositionFallback()
          Returns the fallback position for negative item labels that don't fit within a bar.
 ItemLabelPosition getPositiveItemLabelPositionFallback()
          Returns the fallback position for positive item labels that don't fit within a bar.
 boolean getUseYInterval()
          Returns a flag that determines whether the y-interval from the dataset is used to calculate the length of each bar.
 XYItemRendererState initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, XYPlot plot, XYDataset dataset, PlotRenderingInfo info)
          Initialises the renderer and returns a state object that should be passed to all subsequent calls to the drawItem() method.
 boolean isDrawBarOutline()
          Returns a flag that controls whether or not bar outlines are drawn.
 void setBase(double base)
          Sets the base value for the bars and sends a RendererChangeEvent to all registered listeners.
 void setDrawBarOutline(boolean draw)
          Sets the flag that controls whether or not bar outlines are drawn and sends a RendererChangeEvent to all registered listeners.
 void setGradientPaintTransformer(org.jfree.ui.GradientPaintTransformer transformer)
          Sets the gradient paint transformer and sends a RendererChangeEvent to all registered listeners.
 void setLegendBar(java.awt.Shape bar)
          Sets the shape used to represent bars in each legend item and sends a RendererChangeEvent to all registered listeners.
 void setMargin(double margin)
          Sets the percentage amount by which the bars are trimmed and sends a RendererChangeEvent to all registered listeners.
 void setNegativeItemLabelPositionFallback(ItemLabelPosition position)
          Sets the fallback position for negative item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners.
 void setPositiveItemLabelPositionFallback(ItemLabelPosition position)
          Sets the fallback position for positive item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners.
 void setUseYInterval(boolean use)
          Sets the flag that determines whether the y-interval from the dataset is used to calculate the length of each bar, and sends a RendererChangeEvent to all registered listeners.
 
Methods inherited from class org.jfree.chart.renderer.xy.AbstractXYItemRenderer
addAnnotation, addAnnotation, addEntity, calculateDomainMarkerTextAnchorPoint, drawAnnotations, drawDomainGridLine, drawDomainLine, drawDomainMarker, drawItemLabel, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findRangeBounds, getBaseItemLabelGenerator, getBaseToolTipGenerator, getDefaultEntityRadius, getDrawingSupplier, getItemLabelGenerator, getItemLabelGenerator, getLegendItemLabelGenerator, getLegendItems, getLegendItemToolTipGenerator, getLegendItemURLGenerator, getPassCount, getPlot, getSeriesItemLabelGenerator, getSeriesToolTipGenerator, getToolTipGenerator, getToolTipGenerator, getURLGenerator, isPointInRect, removeAnnotation, removeAnnotations, setBaseItemLabelGenerator, setBaseToolTipGenerator, setDefaultEntityRadius, setItemLabelGenerator, setLegendItemLabelGenerator, setLegendItemToolTipGenerator, setLegendItemURLGenerator, setPlot, setSeriesItemLabelGenerator, setSeriesToolTipGenerator, setToolTipGenerator, setURLGenerator, updateCrosshairValues, updateCrosshairValues
 
Methods inherited from class org.jfree.chart.renderer.AbstractRenderer
addChangeListener, calculateLabelAnchorPoint, fireChangeEvent, getAutoPopulateSeriesFillPaint, getAutoPopulateSeriesOutlinePaint, getAutoPopulateSeriesOutlineStroke, getAutoPopulateSeriesPaint, getAutoPopulateSeriesShape, getAutoPopulateSeriesStroke, getBaseCreateEntities, getBaseFillPaint, getBaseItemLabelFont, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseSeriesVisible, getBaseSeriesVisibleInLegend, getBaseShape, getBaseStroke, getCreateEntities, getItemCreateEntity, getItemFillPaint, getItemLabelAnchorOffset, getItemLabelFont, getItemLabelFont, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesCreateEntities, getSeriesFillPaint, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesVisible, getSeriesVisible, getSeriesVisibleInLegend, getSeriesVisibleInLegend, hashCode, hasListener, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, lookupSeriesFillPaint, lookupSeriesOutlinePaint, lookupSeriesOutlineStroke, lookupSeriesPaint, lookupSeriesShape, lookupSeriesStroke, notifyListeners, removeChangeListener, setAutoPopulateSeriesFillPaint, setAutoPopulateSeriesOutlinePaint, setAutoPopulateSeriesOutlineStroke, setAutoPopulateSeriesPaint, setAutoPopulateSeriesShape, setAutoPopulateSeriesStroke, setBaseCreateEntities, setBaseCreateEntities, setBaseFillPaint, setBaseFillPaint, setBaseItemLabelFont, setBaseItemLabelFont, setBaseItemLabelPaint, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlinePaint, setBaseOutlineStroke, setBaseOutlineStroke, setBasePaint, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseSeriesVisible, setBaseSeriesVisible, setBaseSeriesVisibleInLegend, setBaseSeriesVisibleInLegend, setBaseShape, setBaseShape, setBaseStroke, setBaseStroke, setCreateEntities, setCreateEntities, setFillPaint, setFillPaint, setItemLabelAnchorOffset, setItemLabelFont, setItemLabelFont, setItemLabelPaint, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlinePaint, setOutlineStroke, setOutlineStroke, setPaint, setPaint, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesCreateEntities, setSeriesCreateEntities, setSeriesFillPaint, setSeriesFillPaint, setSeriesItemLabelFont, setSeriesItemLabelFont, setSeriesItemLabelPaint, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesOutlineStroke, setSeriesPaint, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesShape, setSeriesStroke, setSeriesStroke, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setShape, setShape, setStroke, setStroke
 
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface org.jfree.chart.renderer.xy.XYItemRenderer
addAnnotation, addAnnotation, addChangeListener, drawAnnotations, drawDomainGridLine, drawDomainMarker, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findRangeBounds, getBaseItemLabelFont, getBaseItemLabelGenerator, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseSeriesVisible, getBaseSeriesVisibleInLegend, getBaseShape, getBaseStroke, getBaseToolTipGenerator, getItemLabelFont, getItemLabelFont, getItemLabelGenerator, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendItemLabelGenerator, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPassCount, getPlot, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesItemLabelFont, getSeriesItemLabelGenerator, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesToolTipGenerator, getSeriesVisible, getSeriesVisible, getSeriesVisibleInLegend, getSeriesVisibleInLegend, getToolTipGenerator, getURLGenerator, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, removeAnnotation, removeAnnotations, removeChangeListener, setBaseItemLabelFont, setBaseItemLabelGenerator, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlineStroke, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseSeriesVisible, setBaseSeriesVisible, setBaseSeriesVisibleInLegend, setBaseSeriesVisibleInLegend, setBaseShape, setBaseStroke, setBaseToolTipGenerator, setItemLabelFont, setItemLabelGenerator, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setLegendItemLabelGenerator, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlineStroke, setPaint, setPlot, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesItemLabelFont, setSeriesItemLabelGenerator, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesStroke, setSeriesToolTipGenerator, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setShape, setStroke, setToolTipGenerator, setURLGenerator
 
Methods inherited from interface org.jfree.chart.LegendItemSource
getLegendItems
 

Constructor Detail

XYBarRenderer

public XYBarRenderer()
The default constructor.

XYBarRenderer

public XYBarRenderer(double margin)
Constructs a new renderer.

Parameters:
margin - the percentage amount to trim from the width of each bar.
Method Detail

getBase

public double getBase()
Returns the base value for the bars.

Returns:
The base value for the bars.
See Also:
setBase(double)

setBase

public void setBase(double base)
Sets the base value for the bars and sends a RendererChangeEvent to all registered listeners. The base value is not used if the dataset's y-interval is being used to determine the bar length.

Parameters:
base - the new base value.
See Also:
getBase(), getUseYInterval()

getUseYInterval

public boolean getUseYInterval()
Returns a flag that determines whether the y-interval from the dataset is used to calculate the length of each bar.

Returns:
A boolean.
See Also:
setUseYInterval(boolean)

setUseYInterval

public void setUseYInterval(boolean use)
Sets the flag that determines whether the y-interval from the dataset is used to calculate the length of each bar, and sends a RendererChangeEvent to all registered listeners.

Parameters:
use - the flag.
See Also:
getUseYInterval()

getMargin

public double getMargin()
Returns the margin which is a percentage amount by which the bars are trimmed.

Returns:
The margin.
See Also:
setMargin(double)

setMargin

public void setMargin(double margin)
Sets the percentage amount by which the bars are trimmed and sends a RendererChangeEvent to all registered listeners.

Parameters:
margin - the new margin.
See Also:
getMargin()

isDrawBarOutline

public boolean isDrawBarOutline()
Returns a flag that controls whether or not bar outlines are drawn.

Returns:
A boolean.
See Also:
setDrawBarOutline(boolean)

setDrawBarOutline

public void setDrawBarOutline(boolean draw)
Sets the flag that controls whether or not bar outlines are drawn and sends a RendererChangeEvent to all registered listeners.

Parameters:
draw - the flag.
See Also:
isDrawBarOutline()

getGradientPaintTransformer

public org.jfree.ui.GradientPaintTransformer getGradientPaintTransformer()
Returns the gradient paint transformer (an object used to transform gradient paint objects to fit each bar).

Returns:
A transformer (null possible).
See Also:
setGradientPaintTransformer(GradientPaintTransformer)

setGradientPaintTransformer

public void setGradientPaintTransformer(org.jfree.ui.GradientPaintTransformer transformer)
Sets the gradient paint transformer and sends a RendererChangeEvent to all registered listeners.

Parameters:
transformer - the transformer (null permitted).
See Also:
getGradientPaintTransformer()

getLegendBar

public java.awt.Shape getLegendBar()
Returns the shape used to represent bars in each legend item.

Returns:
The shape used to represent bars in each legend item (never null).
See Also:
setLegendBar(Shape)

setLegendBar

public void setLegendBar(java.awt.Shape bar)
Sets the shape used to represent bars in each legend item and sends a RendererChangeEvent to all registered listeners.

Parameters:
bar - the bar shape (null not permitted).
See Also:
getLegendBar()

getPositiveItemLabelPositionFallback

public ItemLabelPosition getPositiveItemLabelPositionFallback()
Returns the fallback position for positive item labels that don't fit within a bar.

Returns:
The fallback position (null possible).
Since:
1.0.2
See Also:
setPositiveItemLabelPositionFallback(ItemLabelPosition)

setPositiveItemLabelPositionFallback

public void setPositiveItemLabelPositionFallback(ItemLabelPosition position)
Sets the fallback position for positive item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners.

Parameters:
position - the position (null permitted).
Since:
1.0.2
See Also:
getPositiveItemLabelPositionFallback()

getNegativeItemLabelPositionFallback

public ItemLabelPosition getNegativeItemLabelPositionFallback()
Returns the fallback position for negative item labels that don't fit within a bar.

Returns:
The fallback position (null possible).
Since:
1.0.2
See Also:
setNegativeItemLabelPositionFallback(ItemLabelPosition)

setNegativeItemLabelPositionFallback

public void setNegativeItemLabelPositionFallback(ItemLabelPosition position)
Sets the fallback position for negative item labels that don't fit within a bar, and sends a RendererChangeEvent to all registered listeners.

Parameters:
position - the position (null permitted).
Since:
1.0.2
See Also:
getNegativeItemLabelPositionFallback()

initialise

public XYItemRendererState initialise(java.awt.Graphics2D g2,
                                      java.awt.geom.Rectangle2D dataArea,
                                      XYPlot plot,
                                      XYDataset dataset,
                                      PlotRenderingInfo info)
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.

Specified by:
initialise in interface XYItemRenderer
Overrides:
initialise in class AbstractXYItemRenderer
Parameters:
g2 - the graphics device.
dataArea - the area inside the axes.
plot - the plot.
dataset - the data.
info - an optional info collection object to return data back to the caller.
Returns:
A state object.

getLegendItem

public LegendItem getLegendItem(int datasetIndex,
                                int series)
Returns a default legend item for the specified series. Subclasses should override this method to generate customised items.

Specified by:
getLegendItem in interface XYItemRenderer
Overrides:
getLegendItem in class AbstractXYItemRenderer
Parameters:
datasetIndex - the dataset index (zero-based).
series - the series index (zero-based).
Returns:
A legend item for the series.

drawItem

public void drawItem(java.awt.Graphics2D g2,
                     XYItemRendererState state,
                     java.awt.geom.Rectangle2D dataArea,
                     PlotRenderingInfo info,
                     XYPlot plot,
                     ValueAxis domainAxis,
                     ValueAxis rangeAxis,
                     XYDataset dataset,
                     int series,
                     int item,
                     CrosshairState crosshairState,
                     int pass)
Draws the visual representation of a single data item.

Specified by:
drawItem in interface XYItemRenderer
Parameters:
g2 - the graphics device.
state - the renderer state.
dataArea - the area within which the plot is being drawn.
info - collects information about the drawing.
plot - the plot (can be used to obtain standard color information etc).
domainAxis - the domain axis.
rangeAxis - the range axis.
dataset - the dataset.
series - the series index (zero-based).
item - the item index (zero-based).
crosshairState - crosshair information for the plot (null permitted).
pass - the pass index.

drawItemLabel

protected void drawItemLabel(java.awt.Graphics2D g2,
                             XYDataset dataset,
                             int series,
                             int item,
                             XYPlot plot,
                             XYItemLabelGenerator generator,
                             java.awt.geom.Rectangle2D bar,
                             boolean negative)
Draws an item label. This method is provided as an alternative to AbstractXYItemRenderer.drawItemLabel(Graphics2D, PlotOrientation, XYDataset, int, int, double, double, boolean) so that the bar can be used to calculate the label anchor point.

Parameters:
g2 - the graphics device.
dataset - the dataset.
series - the series index.
item - the item index.
plot - the plot.
generator - the label generator (null permitted, in which case the method does nothing, just returns).
bar - the bar.
negative - a flag indicating a negative value.

findDomainBounds

public Range findDomainBounds(XYDataset dataset)
Returns the lower and upper bounds (range) of the x-values in the specified dataset. Since this renderer uses the x-interval in the dataset, this is taken into account for the range.

Specified by:
findDomainBounds in interface XYItemRenderer
Overrides:
findDomainBounds in class AbstractXYItemRenderer
Parameters:
dataset - the dataset (null permitted).
Returns:
The range (null if the dataset is null or empty).

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException
Returns a clone of the renderer.

Specified by:
clone in interface org.jfree.util.PublicCloneable
Overrides:
clone in class AbstractXYItemRenderer
Returns:
A clone.
Throws:
java.lang.CloneNotSupportedException - if the renderer cannot be cloned.

equals

public boolean equals(java.lang.Object obj)
Tests this renderer for equality with an arbitrary object.

Overrides:
equals in class AbstractXYItemRenderer
Parameters:
obj - the object to test against (null permitted).
Returns:
A boolean.
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