org.jfree.chart.renderer.category
Class AbstractCategoryItemRenderer

java.lang.Object
  extended byorg.jfree.chart.renderer.AbstractRenderer
      extended byorg.jfree.chart.renderer.category.AbstractCategoryItemRenderer
All Implemented Interfaces:
CategoryItemRenderer, java.lang.Cloneable, LegendItemSource, java.io.Serializable
Direct Known Subclasses:
AreaRenderer, BarRenderer, BoxAndWhiskerRenderer, CategoryStepRenderer, LevelRenderer, LineAndShapeRenderer, MinMaxCategoryRenderer

public abstract class AbstractCategoryItemRenderer
extends AbstractRenderer
implements CategoryItemRenderer, java.lang.Cloneable, java.io.Serializable

An abstract base class that you can use to implement a new CategoryItemRenderer. When you create a new CategoryItemRenderer you are not required to extend this class, but it makes the job easier.

See Also:
Serialized Form

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
protected AbstractCategoryItemRenderer()
          Creates a new renderer with no tool tip generator and no URL generator.
 
Method Summary
 java.lang.Object clone()
          Returns an independent copy of the renderer.
 void drawBackground(java.awt.Graphics2D g2, CategoryPlot plot, java.awt.geom.Rectangle2D dataArea)
          Draws a background for the data area.
 void drawDomainGridline(java.awt.Graphics2D g2, CategoryPlot plot, java.awt.geom.Rectangle2D dataArea, double value)
          Draws a grid line against the domain axis.
protected  void drawItemLabel(java.awt.Graphics2D g2, PlotOrientation orientation, CategoryDataset dataset, int row, int column, double x, double y, boolean negative)
          Draws an item label.
 void drawOutline(java.awt.Graphics2D g2, CategoryPlot plot, java.awt.geom.Rectangle2D dataArea)
          Draws an outline for the data area.
 void drawRangeGridline(java.awt.Graphics2D g2, CategoryPlot plot, ValueAxis axis, java.awt.geom.Rectangle2D dataArea, double value)
          Draws a grid line against the range axis.
 void drawRangeMarker(java.awt.Graphics2D g2, CategoryPlot plot, ValueAxis axis, Marker marker, java.awt.geom.Rectangle2D dataArea)
          Draws a marker for the range axis.
 boolean equals(java.lang.Object obj)
          Tests this renderer for equality with another object.
 Range findRangeBounds(CategoryDataset dataset)
          Returns the range of values the renderer requires to display all the items from the specified dataset.
 CategoryURLGenerator getBaseItemURLGenerator()
          Returns the base item URL generator.
 CategoryLabelGenerator getBaseLabelGenerator()
          Returns the base label generator.
 CategoryToolTipGenerator getBaseToolTipGenerator()
          Returns the base tool tip generator (the "layer 2" generator).
 int getColumnCount()
          Returns the number of columns in the dataset.
protected  CategoryAxis getDomainAxis(CategoryPlot plot, int index)
          Returns a domain axis for a plot.
 DrawingSupplier getDrawingSupplier()
          Returns the drawing supplier from the plot.
 CategoryURLGenerator getItemURLGenerator(int row, int column)
          Returns the URL generator for a data item.
 CategoryLabelGenerator getLabelGenerator(int row, int column)
          Returns the label generator for a data item.
 LegendItem getLegendItem(int datasetIndex, int series)
          Returns a legend item for a series.
 LegendItemCollection getLegendItems()
          Returns a (possibly empty) collection of legend items for the series that this renderer is responsible for drawing.
 int getPassCount()
          Returns the number of passes through the dataset required by the renderer.
 CategoryPlot getPlot()
          Returns the plot that the renderer has been assigned to (where null indicates that the renderer is not currently assigned to a plot).
protected  ValueAxis getRangeAxis(CategoryPlot plot, int index)
          Returns a range axis for a plot.
 int getRowCount()
          Returns the number of rows in the dataset.
 CategoryURLGenerator getSeriesItemURLGenerator(int series)
          Returns the URL generator for a series.
 CategoryLabelGenerator getSeriesLabelGenerator(int series)
          Returns the label generator for a series.
 CategoryToolTipGenerator getSeriesToolTipGenerator(int series)
          Returns the tool tip generator for the specified series (a "layer 1" generator).
 CategoryToolTipGenerator getToolTipGenerator()
          Returns the tool tip generator that will be used for ALL items in the dataset (the "layer 0" generator).
 CategoryToolTipGenerator getToolTipGenerator(int row, int column)
          Returns the tool tip generator that should be used for the specified item.
 int hashCode()
          Returns a hash code for the renderer.
 CategoryItemRendererState initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, CategoryPlot plot, int rendererIndex, PlotRenderingInfo info)
          Initialises the renderer and returns a state object that will be used for the remainder of the drawing process for a single chart.
 void setBaseItemURLGenerator(CategoryURLGenerator generator)
          Sets the base item URL generator.
 void setBaseLabelGenerator(CategoryLabelGenerator generator)
          Sets the base label generator and sends a RendererChangeEvent to all registered listeners.
 void setBaseToolTipGenerator(CategoryToolTipGenerator generator)
          Sets the base tool tip generator and sends a RendererChangeEvent to all registered listeners.
 void setItemURLGenerator(CategoryURLGenerator generator)
          Sets the item URL generator for ALL series.
 void setLabelGenerator(CategoryLabelGenerator generator)
          Sets the label generator for ALL series and sends a RendererChangeEvent to all registered listeners.
 void setPlot(CategoryPlot plot)
          Sets the plot that the renderer has been assigned to.
 void setSeriesItemURLGenerator(int series, CategoryURLGenerator generator)
          Sets the URL generator for a series.
 void setSeriesLabelGenerator(int series, CategoryLabelGenerator generator)
          Sets the label generator for a series and sends a RendererChangeEvent to all registered listeners.
 void setSeriesToolTipGenerator(int series, CategoryToolTipGenerator generator)
          Sets the tool tip generator for a series and sends a RendererChangeEvent to all registered listeners.
 void setToolTipGenerator(CategoryToolTipGenerator generator)
          Sets the tool tip generator for ALL series and sends a RendererChangeEvent to all registered listeners.
 
Methods inherited from class org.jfree.chart.renderer.AbstractRenderer
addChangeListener, calculateLabelAnchorPoint, 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, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisibleInLegend, notifyListeners, removeChangeListener, 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.category.CategoryItemRenderer
addChangeListener, drawItem, getBaseItemLabelFont, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseShape, getBaseStroke, getItemLabelFont, getItemLabelFont, getItemLabelPaint, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, isItemLabelVisible, isSeriesItemLabelsVisible, removeChangeListener, setBaseItemLabelFont, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlineStroke, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseShape, setBaseStroke, setItemLabelFont, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlineStroke, setPaint, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesItemLabelFont, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesStroke, setShape, setStroke
 

Constructor Detail

AbstractCategoryItemRenderer

protected AbstractCategoryItemRenderer()
Creates a new renderer with no tool tip generator and no URL generator. The defaults (no tool tip or URL generators) have been chosen to minimise the processing required to generate a default chart. If you require tool tips or URLs, then you can easily add the required generators.

Method Detail

getPassCount

public int getPassCount()
Returns the number of passes through the dataset required by the renderer. This method returns 1, subclasses should override if they need more passes.

Specified by:
getPassCount in interface CategoryItemRenderer
Returns:
The pass count.

getPlot

public CategoryPlot getPlot()
Returns the plot that the renderer has been assigned to (where null indicates that the renderer is not currently assigned to a plot).

Specified by:
getPlot in interface CategoryItemRenderer
Returns:
The plot (possibly null).

setPlot

public void setPlot(CategoryPlot plot)
Sets the plot that the renderer has been assigned to. This method is usually called by the CategoryPlot, in normal usage you shouldn't need to call this method directly.

Specified by:
setPlot in interface CategoryItemRenderer
Parameters:
plot - the plot (null not permitted).

getLabelGenerator

public CategoryLabelGenerator getLabelGenerator(int row,
                                                int column)
Returns the label generator for a data item. This implementation simply passes control to the getSeriesLabelGenerator(int) method. If, for some reason, you want a different generator for individual items, you can override this method.

Specified by:
getLabelGenerator in interface CategoryItemRenderer
Parameters:
row - the row index (zero based).
column - the column index (zero based).
Returns:
the generator (possibly null).

getSeriesLabelGenerator

public CategoryLabelGenerator getSeriesLabelGenerator(int series)
Returns the label generator for a series.

Specified by:
getSeriesLabelGenerator in interface CategoryItemRenderer
Parameters:
series - the series index (zero based).
Returns:
the generator (possibly null).

setLabelGenerator

public void setLabelGenerator(CategoryLabelGenerator generator)
Sets the label generator for ALL series and sends a RendererChangeEvent to all registered listeners.

Specified by:
setLabelGenerator in interface CategoryItemRenderer
Parameters:
generator - the generator (null permitted).

setSeriesLabelGenerator

public void setSeriesLabelGenerator(int series,
                                    CategoryLabelGenerator generator)
Sets the label generator for a series and sends a RendererChangeEvent to all registered listeners.

Specified by:
setSeriesLabelGenerator in interface CategoryItemRenderer
Parameters:
series - the series index (zero based).
generator - the generator (null permitted).

getBaseLabelGenerator

public CategoryLabelGenerator getBaseLabelGenerator()
Returns the base label generator.

Specified by:
getBaseLabelGenerator in interface CategoryItemRenderer
Returns:
The generator (possibly null).

setBaseLabelGenerator

public void setBaseLabelGenerator(CategoryLabelGenerator generator)
Sets the base label generator and sends a RendererChangeEvent to all registered listeners.

Specified by:
setBaseLabelGenerator in interface CategoryItemRenderer
Parameters:
generator - the generator (null permitted).

getToolTipGenerator

public CategoryToolTipGenerator getToolTipGenerator(int row,
                                                    int column)
Returns the tool tip generator that should be used for the specified item. This method looks up the generator using the "three-layer" approach outlined in the general description of this interface. You can override this method if you want to return a different generator per item.

Specified by:
getToolTipGenerator in interface CategoryItemRenderer
Parameters:
row - the row index (zero-based).
column - the column index (zero-based).
Returns:
The generator (possibly null).

getToolTipGenerator

public CategoryToolTipGenerator getToolTipGenerator()
Returns the tool tip generator that will be used for ALL items in the dataset (the "layer 0" generator).

Specified by:
getToolTipGenerator in interface CategoryItemRenderer
Returns:
A tool tip generator (possibly null).

setToolTipGenerator

public void setToolTipGenerator(CategoryToolTipGenerator generator)
Sets the tool tip generator for ALL series and sends a RendererChangeEvent to all registered listeners.

Specified by:
setToolTipGenerator in interface CategoryItemRenderer
Parameters:
generator - the generator (null permitted).

getSeriesToolTipGenerator

public CategoryToolTipGenerator getSeriesToolTipGenerator(int series)
Returns the tool tip generator for the specified series (a "layer 1" generator).

Specified by:
getSeriesToolTipGenerator in interface CategoryItemRenderer
Parameters:
series - the series index (zero-based).
Returns:
The tool tip generator (possibly null).

setSeriesToolTipGenerator

public void setSeriesToolTipGenerator(int series,
                                      CategoryToolTipGenerator generator)
Sets the tool tip generator for a series and sends a RendererChangeEvent to all registered listeners.

Specified by:
setSeriesToolTipGenerator in interface CategoryItemRenderer
Parameters:
series - the series index (zero-based).
generator - the generator (null permitted).

getBaseToolTipGenerator

public CategoryToolTipGenerator getBaseToolTipGenerator()
Returns the base tool tip generator (the "layer 2" generator).

Specified by:
getBaseToolTipGenerator in interface CategoryItemRenderer
Returns:
The tool tip generator (possibly null).

setBaseToolTipGenerator

public void setBaseToolTipGenerator(CategoryToolTipGenerator generator)
Sets the base tool tip generator and sends a RendererChangeEvent to all registered listeners.

Specified by:
setBaseToolTipGenerator in interface CategoryItemRenderer
Parameters:
generator - the generator (null permitted).

getItemURLGenerator

public CategoryURLGenerator getItemURLGenerator(int row,
                                                int column)
Returns the URL generator for a data item. This method just calls the getSeriesItemURLGenerator method, but you can override this behaviour if you want to.

Specified by:
getItemURLGenerator in interface CategoryItemRenderer
Parameters:
row - the row index (zero based).
column - the column index (zero based).
Returns:
The URL generator.

getSeriesItemURLGenerator

public CategoryURLGenerator getSeriesItemURLGenerator(int series)
Returns the URL generator for a series.

Specified by:
getSeriesItemURLGenerator in interface CategoryItemRenderer
Parameters:
series - the series index (zero based).
Returns:
The URL generator for the series.

setItemURLGenerator

public void setItemURLGenerator(CategoryURLGenerator generator)
Sets the item URL generator for ALL series.

Specified by:
setItemURLGenerator in interface CategoryItemRenderer
Parameters:
generator - the generator.

setSeriesItemURLGenerator

public void setSeriesItemURLGenerator(int series,
                                      CategoryURLGenerator generator)
Sets the URL generator for a series.

Specified by:
setSeriesItemURLGenerator in interface CategoryItemRenderer
Parameters:
series - the series index (zero based).
generator - the generator.

getBaseItemURLGenerator

public CategoryURLGenerator getBaseItemURLGenerator()
Returns the base item URL generator.

Specified by:
getBaseItemURLGenerator in interface CategoryItemRenderer
Returns:
The item URL generator.

setBaseItemURLGenerator

public void setBaseItemURLGenerator(CategoryURLGenerator generator)
Sets the base item URL generator.

Specified by:
setBaseItemURLGenerator in interface CategoryItemRenderer
Parameters:
generator - the item URL generator.

getRowCount

public int getRowCount()
Returns the number of rows in the dataset. This value is updated in the initialise(java.awt.Graphics2D, java.awt.geom.Rectangle2D, org.jfree.chart.plot.CategoryPlot, int, org.jfree.chart.plot.PlotRenderingInfo) method.

Returns:
the row count.

getColumnCount

public int getColumnCount()
Returns the number of columns in the dataset. This value is updated in the initialise(java.awt.Graphics2D, java.awt.geom.Rectangle2D, org.jfree.chart.plot.CategoryPlot, int, org.jfree.chart.plot.PlotRenderingInfo) method.

Returns:
the column count.

initialise

public CategoryItemRendererState initialise(java.awt.Graphics2D g2,
                                            java.awt.geom.Rectangle2D dataArea,
                                            CategoryPlot plot,
                                            int rendererIndex,
                                            PlotRenderingInfo info)
Initialises the renderer and returns a state object that will be used for the remainder of the drawing process for a single chart. The state object allows for the fact that the renderer may be used simultaneously by multiple threads (each thread will work with a separate state object).

Stores a reference to the PlotRenderingInfo object (which might be null), and then sets the useCategoriesPaint flag according to the special case conditions a) there is only one series and b) the categoriesPaint array is not null.

Specified by:
initialise in interface CategoryItemRenderer
Parameters:
g2 - the graphics device.
dataArea - the data area.
plot - the plot.
rendererIndex - the renderer index.
info - an object for returning information about the structure of the plot (null permitted).
Returns:
the renderer state.

findRangeBounds

public Range findRangeBounds(CategoryDataset dataset)
Returns the range of values the renderer requires to display all the items from the specified dataset.

Specified by:
findRangeBounds in interface CategoryItemRenderer
Parameters:
dataset - the dataset (null permitted).
Returns:
The range (or null if the dataset is null or empty).

drawBackground

public void drawBackground(java.awt.Graphics2D g2,
                           CategoryPlot plot,
                           java.awt.geom.Rectangle2D dataArea)
Draws a background for the data area. The default implementation just gets the plot to draw the outline, but some renderers will override this behaviour.

Specified by:
drawBackground in interface CategoryItemRenderer
Parameters:
g2 - the graphics device.
plot - the plot.
dataArea - the data area.

drawOutline

public void drawOutline(java.awt.Graphics2D g2,
                        CategoryPlot plot,
                        java.awt.geom.Rectangle2D dataArea)
Draws an outline for the data area. The default implementation just gets the plot to draw the outline, but some renderers will override this behaviour.

Specified by:
drawOutline in interface CategoryItemRenderer
Parameters:
g2 - the graphics device.
plot - the plot.
dataArea - the data area.

drawDomainGridline

public void drawDomainGridline(java.awt.Graphics2D g2,
                               CategoryPlot plot,
                               java.awt.geom.Rectangle2D dataArea,
                               double value)
Draws a grid line against the domain axis.

Note that this default implementation assumes that the horizontal axis is the domain axis. If this is not the case, you will need to override this method.

Specified by:
drawDomainGridline in interface CategoryItemRenderer
Parameters:
g2 - the graphics device.
plot - the plot.
dataArea - the area for plotting data (not yet adjusted for any 3D effect).
value - the Java2D value at which the grid line should be drawn.

drawRangeGridline

public void drawRangeGridline(java.awt.Graphics2D g2,
                              CategoryPlot plot,
                              ValueAxis axis,
                              java.awt.geom.Rectangle2D dataArea,
                              double value)
Draws a grid line against the range axis.

Specified by:
drawRangeGridline in interface CategoryItemRenderer
Parameters:
g2 - the graphics device.
plot - the plot.
axis - the value axis.
dataArea - the area for plotting data (not yet adjusted for any 3D effect).
value - the value at which the grid line should be drawn.

drawRangeMarker

public void drawRangeMarker(java.awt.Graphics2D g2,
                            CategoryPlot plot,
                            ValueAxis axis,
                            Marker marker,
                            java.awt.geom.Rectangle2D dataArea)
Draws a marker for the range axis.

Specified by:
drawRangeMarker in interface CategoryItemRenderer
Parameters:
g2 - the graphics device (not null).
plot - the plot (not null).
axis - the range axis (not null).
marker - the marker to be drawn (not null).
dataArea - the area inside the axes (not null).

getLegendItem

public LegendItem getLegendItem(int datasetIndex,
                                int series)
Returns a legend item for a series.

Specified by:
getLegendItem in interface CategoryItemRenderer
Parameters:
datasetIndex - the dataset index (zero-based).
series - the series index (zero-based).
Returns:
The legend item.

equals

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

Overrides:
equals in class AbstractRenderer
Parameters:
obj - the object.
Returns:
true or false.

hashCode

public int hashCode()
Returns a hash code for the renderer.

Overrides:
hashCode in class AbstractRenderer
Returns:
The hash code.

getDrawingSupplier

public DrawingSupplier getDrawingSupplier()
Returns the drawing supplier from the plot.

Specified by:
getDrawingSupplier in class AbstractRenderer
Returns:
The drawing supplier (possibly null).

drawItemLabel

protected void drawItemLabel(java.awt.Graphics2D g2,
                             PlotOrientation orientation,
                             CategoryDataset dataset,
                             int row,
                             int column,
                             double x,
                             double y,
                             boolean negative)
Draws an item label.

Parameters:
g2 - the graphics device.
orientation - the orientation.
dataset - the dataset.
row - the row.
column - the column.
x - the x coordinate (in Java2D space).
y - the y coordinate (in Java2D space).
negative - indicates a negative value (which affects the item label position).

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException
Returns an independent copy of the renderer. The plot reference is shallow copied.

Overrides:
clone in class AbstractRenderer
Returns:
A clone.
Throws:
java.lang.CloneNotSupportedException - can be thrown if one of the objects belonging to the renderer does not support cloning (for example, an item label generator).

getDomainAxis

protected CategoryAxis getDomainAxis(CategoryPlot plot,
                                     int index)
Returns a domain axis for a plot.

Parameters:
plot - the plot.
index - the axis index.
Returns:
A domain axis.

getRangeAxis

protected ValueAxis getRangeAxis(CategoryPlot plot,
                                 int index)
Returns a range axis for a plot.

Parameters:
plot - the plot.
index - the axis index (null for the primary axis).
Returns:
A range axis.

getLegendItems

public LegendItemCollection getLegendItems()
Returns a (possibly empty) collection of legend items for the series that this renderer is responsible for drawing.

Specified by:
getLegendItems in interface LegendItemSource
Returns:
The legend item collection (never null).