Package org.jfree.chart.renderer.xy

Class XYBlockRenderer

java.lang.Object

org.jfree.chart.renderer.AbstractRenderer

org.jfree.chart.renderer.xy.AbstractXYItemRenderer

org.jfree.chart.renderer.xy.XYBlockRenderer

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.EventListener, AnnotationChangeListener, LegendItemSource, XYItemRenderer, PublicCloneable

public class XYBlockRenderer
extends AbstractXYItemRenderer
implements XYItemRenderer, java.lang.Cloneable, PublicCloneable, java.io.Serializable

A renderer that represents data from an XYZDataset by drawing a color block at each (x, y) point, where the color is a function of the z-value from the dataset. The example shown here is generated by the XYBlockChartDemo1.java program included in the JFreeChart demo collection:

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
private RectangleAnchor	blockAnchor	The anchor point used to align each block to its (x, y) location.
private double	blockHeight	The block height (defaults to 1.0).
private double	blockWidth	The block width (defaults to 1.0).
private PaintScale	paintScale	The paint scale.
private double	xOffset	Temporary storage for the x-offset used to align the block anchor.
private double	yOffset	Temporary storage for the y-offset used to align the block anchor.

Fields inherited from class org.jfree.chart.renderer.AbstractRenderer

DEFAULT_ITEM_LABEL_INSETS, DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, DEFAULT_PAINT, DEFAULT_SHAPE, DEFAULT_STROKE, DEFAULT_VALUE_LABEL_FONT, DEFAULT_VALUE_LABEL_PAINT, ZERO

Constructor Summary

Constructors

Constructor	Description
XYBlockRenderer()	Creates a new XYBlockRenderer instance with default attributes.

Method Summary

Modifier and Type	Method	Description
java.lang.Object	clone()	Returns a clone of this 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 block representing the specified item.
boolean	equals(java.lang.Object obj)	Tests this XYBlockRenderer 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.
Range	findRangeBounds(XYDataset dataset)	Returns the range of values the renderer requires to display all the items from the specified dataset.
RectangleAnchor	getBlockAnchor()	Returns the anchor point used to align a block at its (x, y) location.
double	getBlockHeight()	Returns the block height, in data/axis units.
double	getBlockWidth()	Returns the block width, in data/axis units.
PaintScale	getPaintScale()	Returns the paint scale used by the renderer.
void	setBlockAnchor(RectangleAnchor anchor)	Sets the anchor point used to align a block at its (x, y) location and sends a RendererChangeEvent to all registered listeners.
void	setBlockHeight(double height)	Sets the height of the blocks used to represent each data item and sends a RendererChangeEvent to all registered listeners.
void	setBlockWidth(double width)	Sets the width of the blocks used to represent each data item and sends a RendererChangeEvent to all registered listeners.
void	setPaintScale(PaintScale scale)	Sets the paint scale used by the renderer and sends a RendererChangeEvent to all registered listeners.
private void	updateOffsets()	Updates the offsets to take into account the block width, height and anchor.

Methods inherited from class org.jfree.chart.renderer.xy.AbstractXYItemRenderer

addAnnotation, addAnnotation, addEntity, annotationChanged, beginElementGroup, calculateDomainMarkerTextAnchorPoint, drawAnnotations, drawDomainLine, drawDomainMarker, drawItemLabel, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, findDomainBounds, findRangeBounds, getAnnotations, getDefaultItemLabelGenerator, getDefaultToolTipGenerator, getDrawingSupplier, getItemLabelGenerator, getLegendItem, getLegendItemLabelGenerator, getLegendItems, getLegendItemToolTipGenerator, getLegendItemURLGenerator, getPassCount, getPlot, getSeriesItemLabelGenerator, getSeriesToolTipGenerator, getToolTipGenerator, getURLGenerator, hashCode, initialise, lineTo, moveTo, removeAnnotation, removeAnnotations, setDefaultItemLabelGenerator, setDefaultToolTipGenerator, setLegendItemLabelGenerator, setLegendItemToolTipGenerator, setLegendItemURLGenerator, setPlot, setSeriesItemLabelGenerator, setSeriesToolTipGenerator, setURLGenerator, updateCrosshairValues

Methods inherited from class org.jfree.chart.renderer.AbstractRenderer

addChangeListener, beginElementGroup, calculateLabelAnchorPoint, clearSeriesPaints, clearSeriesStrokes, endElementGroup, fireChangeEvent, getAutoPopulateSeriesFillPaint, getAutoPopulateSeriesOutlinePaint, getAutoPopulateSeriesOutlineStroke, getAutoPopulateSeriesPaint, getAutoPopulateSeriesShape, getAutoPopulateSeriesStroke, getDataBoundsIncludesVisibleSeriesOnly, getDefaultCreateEntities, getDefaultEntityRadius, getDefaultFillPaint, getDefaultItemLabelFont, getDefaultItemLabelPaint, getDefaultItemLabelsVisible, getDefaultLegendShape, getDefaultLegendTextFont, getDefaultLegendTextPaint, getDefaultNegativeItemLabelPosition, getDefaultOutlinePaint, getDefaultOutlineStroke, getDefaultPaint, getDefaultPositiveItemLabelPosition, getDefaultSeriesVisible, getDefaultSeriesVisibleInLegend, getDefaultShape, getDefaultStroke, getItemCreateEntity, getItemFillPaint, getItemLabelAnchorOffset, getItemLabelFont, getItemLabelInsets, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendShape, getLegendTextFont, getLegendTextPaint, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getSeriesCreateEntities, getSeriesFillPaint, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesVisible, getSeriesVisibleInLegend, getTreatLegendShapeAsLine, hasListener, isComputeItemLabelContrastColor, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, lookupLegendShape, lookupLegendTextFont, lookupLegendTextPaint, lookupSeriesFillPaint, lookupSeriesOutlinePaint, lookupSeriesOutlineStroke, lookupSeriesPaint, lookupSeriesShape, lookupSeriesStroke, notifyListeners, removeChangeListener, setAutoPopulateSeriesFillPaint, setAutoPopulateSeriesOutlinePaint, setAutoPopulateSeriesOutlineStroke, setAutoPopulateSeriesPaint, setAutoPopulateSeriesShape, setAutoPopulateSeriesStroke, setComputeItemLabelContrastColor, setDataBoundsIncludesVisibleSeriesOnly, setDefaultCreateEntities, setDefaultCreateEntities, setDefaultEntityRadius, setDefaultFillPaint, setDefaultFillPaint, setDefaultItemLabelFont, setDefaultItemLabelFont, setDefaultItemLabelPaint, setDefaultItemLabelPaint, setDefaultItemLabelsVisible, setDefaultItemLabelsVisible, setDefaultLegendShape, setDefaultLegendTextFont, setDefaultLegendTextPaint, setDefaultNegativeItemLabelPosition, setDefaultNegativeItemLabelPosition, setDefaultOutlinePaint, setDefaultOutlinePaint, setDefaultOutlineStroke, setDefaultOutlineStroke, setDefaultPaint, setDefaultPaint, setDefaultPositiveItemLabelPosition, setDefaultPositiveItemLabelPosition, setDefaultSeriesVisible, setDefaultSeriesVisible, setDefaultSeriesVisibleInLegend, setDefaultSeriesVisibleInLegend, setDefaultShape, setDefaultShape, setDefaultStroke, setDefaultStroke, setItemLabelAnchorOffset, setItemLabelInsets, setLegendShape, setLegendTextFont, setLegendTextPaint, 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, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setTreatLegendShapeAsLine

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.jfree.chart.LegendItemSource

getLegendItems

Methods inherited from interface org.jfree.chart.renderer.xy.XYItemRenderer

addAnnotation, addAnnotation, addChangeListener, drawAnnotations, drawDomainLine, drawDomainMarker, drawRangeLine, drawRangeMarker, fillDomainGridBand, fillRangeGridBand, getDefaultCreateEntities, getDefaultFillPaint, getDefaultItemLabelFont, getDefaultItemLabelGenerator, getDefaultItemLabelPaint, getDefaultItemLabelsVisible, getDefaultNegativeItemLabelPosition, getDefaultOutlinePaint, getDefaultOutlineStroke, getDefaultPaint, getDefaultPositiveItemLabelPosition, getDefaultSeriesVisible, getDefaultSeriesVisibleInLegend, getDefaultShape, getDefaultStroke, getDefaultToolTipGenerator, getItemCreateEntity, getItemFillPaint, getItemLabelFont, getItemLabelGenerator, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getLegendItem, getLegendItemLabelGenerator, getNegativeItemLabelPosition, getPassCount, getPlot, getPositiveItemLabelPosition, getSeriesCreateEntities, getSeriesFillPaint, getSeriesItemLabelFont, getSeriesItemLabelGenerator, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesToolTipGenerator, getSeriesVisible, getSeriesVisibleInLegend, getToolTipGenerator, getURLGenerator, initialise, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, removeAnnotation, removeAnnotations, removeChangeListener, setDefaultCreateEntities, setDefaultCreateEntities, setDefaultFillPaint, setDefaultFillPaint, setDefaultItemLabelFont, setDefaultItemLabelGenerator, setDefaultItemLabelPaint, setDefaultItemLabelsVisible, setDefaultItemLabelsVisible, setDefaultNegativeItemLabelPosition, setDefaultNegativeItemLabelPosition, setDefaultOutlinePaint, setDefaultOutlinePaint, setDefaultOutlineStroke, setDefaultOutlineStroke, setDefaultPaint, setDefaultPaint, setDefaultPositiveItemLabelPosition, setDefaultPositiveItemLabelPosition, setDefaultSeriesVisible, setDefaultSeriesVisible, setDefaultSeriesVisibleInLegend, setDefaultSeriesVisibleInLegend, setDefaultShape, setDefaultShape, setDefaultStroke, setDefaultStroke, setDefaultToolTipGenerator, setLegendItemLabelGenerator, setPlot, setSeriesCreateEntities, setSeriesCreateEntities, setSeriesFillPaint, setSeriesFillPaint, setSeriesItemLabelFont, setSeriesItemLabelGenerator, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesOutlineStroke, setSeriesPaint, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesShape, setSeriesStroke, setSeriesStroke, setSeriesToolTipGenerator, setSeriesVisible, setSeriesVisible, setSeriesVisibleInLegend, setSeriesVisibleInLegend, setURLGenerator

Field Detail

blockWidth

private double blockWidth

The block width (defaults to 1.0).

blockHeight

private double blockHeight

The block height (defaults to 1.0).

blockAnchor

private RectangleAnchor blockAnchor

The anchor point used to align each block to its (x, y) location. The default value is RectangleAnchor.CENTER.

xOffset

private double xOffset

Temporary storage for the x-offset used to align the block anchor.

yOffset

private double yOffset

Temporary storage for the y-offset used to align the block anchor.

paintScale

private PaintScale paintScale

The paint scale.

Constructor Detail

XYBlockRenderer

public XYBlockRenderer()

Creates a new XYBlockRenderer instance with default attributes.

Method Detail

getBlockWidth

public double getBlockWidth()

Returns the block width, in data/axis units.

Returns:

The block width.

See Also:

setBlockWidth(double)

setBlockWidth

public void setBlockWidth(double width)

Sets the width of the blocks used to represent each data item and sends a RendererChangeEvent to all registered listeners.

Parameters:

width - the new width, in data/axis units (must be > 0.0).

See Also:

getBlockWidth()

getBlockHeight

public double getBlockHeight()

Returns the block height, in data/axis units.

Returns:

The block height.

See Also:

setBlockHeight(double)

setBlockHeight

public void setBlockHeight(double height)

Sets the height of the blocks used to represent each data item and sends a RendererChangeEvent to all registered listeners.

Parameters:

height - the new height, in data/axis units (must be > 0.0).

See Also:

getBlockHeight()

getBlockAnchor

public RectangleAnchor getBlockAnchor()

Returns the anchor point used to align a block at its (x, y) location. The default values is RectangleAnchor.CENTER.

Returns:

The anchor point (never null).

See Also:

setBlockAnchor(RectangleAnchor)

setBlockAnchor

public void setBlockAnchor(RectangleAnchor anchor)

Sets the anchor point used to align a block at its (x, y) location and sends a RendererChangeEvent to all registered listeners.

Parameters:

anchor - the anchor.

See Also:

getBlockAnchor()

getPaintScale

public PaintScale getPaintScale()

Returns the paint scale used by the renderer.

Returns:

The paint scale (never null).

See Also:

setPaintScale(PaintScale)

setPaintScale

public void setPaintScale(PaintScale scale)

Sets the paint scale used by the renderer and sends a RendererChangeEvent to all registered listeners.

Parameters:

scale - the scale (null not permitted).

See Also:

getPaintScale()

updateOffsets

private void updateOffsets()

Updates the offsets to take into account the block width, height and anchor.

findDomainBounds

public Range findDomainBounds(XYDataset dataset)

Returns the lower and upper bounds (range) of the x-values in the specified dataset.

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).

See Also:

findRangeBounds(XYDataset)

findRangeBounds

public Range findRangeBounds(XYDataset dataset)

Returns the range of values the renderer requires to display all the items from the specified dataset.

Specified by:

findRangeBounds in interface XYItemRenderer

Overrides:

findRangeBounds in class AbstractXYItemRenderer

Parameters:

dataset - the dataset (null permitted).

Returns:

The range (null if the dataset is null or empty).

See Also:

findDomainBounds(XYDataset)

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 block representing the specified item.

Specified by:

drawItem in interface XYItemRenderer

Parameters:

g2 - the graphics device.

state - the state.

dataArea - the data area.

info - the plot rendering info.

plot - the plot.

domainAxis - the x-axis.

rangeAxis - the y-axis.

dataset - the dataset.

series - the series index.

item - the item index.

crosshairState - the crosshair state.

pass - the pass index.

equals

public boolean equals(java.lang.Object obj)

Tests this XYBlockRenderer for equality with an arbitrary object. This method returns true if and only if:

• obj is an instance of XYBlockRenderer (not null);
• obj has the same field values as this XYBlockRenderer;

Overrides:

equals in class AbstractXYItemRenderer

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

clone

public java.lang.Object clone()
                       throws java.lang.CloneNotSupportedException

Returns a clone of this renderer.

Specified by:

clone in interface PublicCloneable

Overrides:

clone in class AbstractXYItemRenderer

Returns:

A clone of this renderer.

Throws:

java.lang.CloneNotSupportedException - if there is a problem creating the clone.