Module org.jfree.chart

Package org.jfree.chart.renderer.category

Class LevelRenderer

java.lang.Object

org.jfree.chart.renderer.AbstractRenderer

org.jfree.chart.renderer.category.AbstractCategoryItemRenderer

org.jfree.chart.renderer.category.LevelRenderer

All Implemented Interfaces:

Serializable, Cloneable, PublicCloneable, ChartElement, org.jfree.chart.legend.LegendItemSource, CategoryItemRenderer

public class LevelRenderer
extends AbstractCategoryItemRenderer
implements Cloneable, PublicCloneable, Serializable

A CategoryItemRenderer that draws individual data items as horizontal lines, spaced in the same way as bars in a bar chart. The example shown here is generated by the OverlaidBarChartDemo2.java program included in the JFreeChart Demo Collection:

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static double	DEFAULT_ITEM_MARGIN	The default item margin percentage.

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

Constructors

Constructor	Description
LevelRenderer()	Creates a new renderer with default settings.

Method Summary

Modifier and Type	Method	Description
protected double	calculateBarW0(CategoryPlot plot, PlotOrientation orientation, Rectangle2D dataArea, CategoryAxis domainAxis, CategoryItemRendererState state, int row, int column)	Calculates the coordinate of the first "side" of a bar.
protected void	calculateItemWidth(CategoryPlot plot, Rectangle2D dataArea, int rendererIndex, CategoryItemRendererState state)	Calculates the bar width and stores it in the renderer state.
protected double	calculateSeriesWidth(double space, CategoryAxis axis, int categories, int series)	Calculates the available space for each series.
void	drawItem(Graphics2D g2, CategoryItemRendererState state, Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column, int pass)	Draws the bar for a single (series, category) data item.
boolean	equals(Object obj)	Tests an object for equality with this instance.
double	getItemMargin()	Returns the item margin.
double	getItemMiddle(Comparable<?> rowKey, Comparable<?> columnKey, CategoryDataset<?,?> dataset, CategoryAxis axis, Rectangle2D area, RectangleEdge edge)	Returns the Java2D coordinate for the middle of the specified data item.
double	getMaximumItemWidth()	Returns the maximum width, as a percentage of the available drawing space.
int	hashCode()	Returns a hash code for this instance.
CategoryItemRendererState	initialise(Graphics2D g2, Rectangle2D dataArea, CategoryPlot plot, int rendererIndex, PlotRenderingInfo info)	Initialises the renderer and returns a state object that will be passed to subsequent calls to the drawItem method.
void	setItemMargin(double percent)	Sets the item margin and sends a RendererChangeEvent to all registered listeners.
void	setMaximumItemWidth(double percent)	Sets the maximum item width, which is specified as a percentage of the available space for all items, and sends a RendererChangeEvent to all registered listeners.

Methods inherited from class org.jfree.chart.renderer.category.AbstractCategoryItemRenderer

addEntity, addItemEntity, beginElementGroup, calculateDomainMarkerTextAnchorPoint, calculateRangeMarkerTextAnchorPoint, clone, createState, drawBackground, drawDomainGridline, drawDomainMarker, drawItemLabel, drawOutline, drawRangeLine, drawRangeMarker, findRangeBounds, findRangeBounds, getColumnCount, getDefaultItemLabelGenerator, getDefaultItemURLGenerator, getDefaultToolTipGenerator, getDomainAxis, getDrawingSupplier, getItemLabelGenerator, getItemURLGenerator, getLegendItem, getLegendItemLabelGenerator, getLegendItems, getLegendItemToolTipGenerator, getLegendItemURLGenerator, getPassCount, getPlot, getRangeAxis, getRowCount, getSeriesItemLabelGenerator, getSeriesItemURLGenerator, getSeriesToolTipGenerator, getToolTipGenerator, setDefaultItemLabelGenerator, setDefaultItemLabelGenerator, setDefaultItemURLGenerator, setDefaultItemURLGenerator, setDefaultToolTipGenerator, setDefaultToolTipGenerator, setLegendItemLabelGenerator, setLegendItemToolTipGenerator, setLegendItemURLGenerator, setPlot, setSeriesItemLabelGenerator, setSeriesItemLabelGenerator, setSeriesItemURLGenerator, setSeriesItemURLGenerator, setSeriesToolTipGenerator, setSeriesToolTipGenerator, 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, 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, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, lookupLegendShape, lookupLegendTextFont, lookupLegendTextPaint, lookupSeriesFillPaint, lookupSeriesOutlinePaint, lookupSeriesOutlineStroke, lookupSeriesPaint, lookupSeriesShape, lookupSeriesStroke, notifyListeners, receive, removeChangeListener, setAutoPopulateSeriesFillPaint, setAutoPopulateSeriesOutlinePaint, setAutoPopulateSeriesOutlineStroke, setAutoPopulateSeriesPaint, setAutoPopulateSeriesShape, setAutoPopulateSeriesStroke, 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, 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.renderer.category.CategoryItemRenderer

addChangeListener, getDefaultCreateEntities, getDefaultFillPaint, getDefaultItemLabelFont, getDefaultItemLabelPaint, getDefaultItemLabelsVisible, getDefaultNegativeItemLabelPosition, getDefaultOutlinePaint, getDefaultOutlineStroke, getDefaultPaint, getDefaultPositiveItemLabelPosition, getDefaultSeriesVisible, getDefaultSeriesVisibleInLegend, getDefaultShape, getDefaultStroke, getItemCreateEntity, getItemFillPaint, getItemLabelFont, getItemLabelPaint, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getItemVisible, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getSeriesCreateEntities, getSeriesFillPaint, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, getSeriesVisible, getSeriesVisibleInLegend, isItemLabelVisible, isSeriesItemLabelsVisible, isSeriesVisible, isSeriesVisibleInLegend, removeChangeListener, setDefaultCreateEntities, setDefaultCreateEntities, setDefaultFillPaint, setDefaultItemLabelFont, setDefaultItemLabelFont, setDefaultItemLabelPaint, setDefaultItemLabelPaint, setDefaultItemLabelsVisible, setDefaultItemLabelsVisible, setDefaultNegativeItemLabelPosition, setDefaultNegativeItemLabelPosition, setDefaultOutlinePaint, setDefaultOutlinePaint, setDefaultOutlineStroke, setDefaultOutlineStroke, setDefaultPaint, setDefaultPaint, setDefaultPositiveItemLabelPosition, setDefaultPositiveItemLabelPosition, setDefaultSeriesVisible, setDefaultSeriesVisible, setDefaultSeriesVisibleInLegend, setDefaultSeriesVisibleInLegend, setDefaultShape, setDefaultShape, setDefaultStroke, setDefaultStroke, setSeriesCreateEntities, setSeriesCreateEntities, 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

Methods inherited from interface org.jfree.chart.ChartElement

receive

Methods inherited from interface org.jfree.chart.api.PublicCloneable

clone

Field Detail

DEFAULT_ITEM_MARGIN

public static final double DEFAULT_ITEM_MARGIN

The default item margin percentage.

See Also:

Constant Field Values

Constructor Detail

LevelRenderer

public LevelRenderer()

Creates a new renderer with default settings.

Method Detail

getItemMargin

public double getItemMargin()

Returns the item margin.

Returns:

The margin.

See Also:

setItemMargin(double)

setItemMargin

public void setItemMargin(double percent)

Sets the item margin and sends a RendererChangeEvent to all registered listeners. The value is expressed as a percentage of the available width for plotting all the bars, with the resulting amount to be distributed between all the bars evenly.

Parameters:

percent - the new margin.

See Also:

getItemMargin()

getMaximumItemWidth

public double getMaximumItemWidth()

Returns the maximum width, as a percentage of the available drawing space.

Returns:

The maximum width.

See Also:

setMaximumItemWidth(double)

setMaximumItemWidth

public void setMaximumItemWidth(double percent)

Sets the maximum item width, which is specified as a percentage of the available space for all items, and sends a RendererChangeEvent to all registered listeners.

Parameters:

percent - the percent.

See Also:

getMaximumItemWidth()

initialise

public CategoryItemRendererState initialise(Graphics2D g2,
                                            Rectangle2D dataArea,
                                            CategoryPlot plot,
                                            int rendererIndex,
                                            PlotRenderingInfo info)

Initialises the renderer and returns a state object that will be passed to subsequent calls to the drawItem method.

This method gets called once at the start of the process of drawing a chart.

Specified by:

initialise in interface CategoryItemRenderer

Overrides:

initialise in class AbstractCategoryItemRenderer

Parameters:

g2 - the graphics device.

dataArea - the area in which the data is to be plotted.

plot - the plot.

rendererIndex - the renderer index.

info - collects chart rendering information for return to caller.

Returns:

The renderer state.

calculateItemWidth

protected void calculateItemWidth(CategoryPlot plot,
                                  Rectangle2D dataArea,
                                  int rendererIndex,
                                  CategoryItemRendererState state)

Calculates the bar width and stores it in the renderer state.

Parameters:

plot - the plot.

dataArea - the data area.

rendererIndex - the renderer index.

state - the renderer state.

calculateBarW0

protected double calculateBarW0(CategoryPlot plot,
                                PlotOrientation orientation,
                                Rectangle2D dataArea,
                                CategoryAxis domainAxis,
                                CategoryItemRendererState state,
                                int row,
                                int column)

Calculates the coordinate of the first "side" of a bar. This will be the minimum x-coordinate for a vertical bar, and the minimum y-coordinate for a horizontal bar.

Parameters:

plot - the plot.

orientation - the plot orientation.

dataArea - the data area.

domainAxis - the domain axis.

state - the renderer state (has the bar width precalculated).

row - the row index.

column - the column index.

Returns:

The coordinate.

drawItem

public void drawItem(Graphics2D g2,
                     CategoryItemRendererState state,
                     Rectangle2D dataArea,
                     CategoryPlot plot,
                     CategoryAxis domainAxis,
                     ValueAxis rangeAxis,
                     CategoryDataset dataset,
                     int row,
                     int column,
                     int pass)

Draws the bar for a single (series, category) data item.

Specified by:

drawItem in interface CategoryItemRenderer

Parameters:

g2 - the graphics device.

state - the renderer state.

dataArea - the data area.

plot - the plot.

domainAxis - the domain axis.

rangeAxis - the range axis.

dataset - the dataset.

row - the row index (zero-based).

column - the column index (zero-based).

pass - the pass index.

calculateSeriesWidth

protected double calculateSeriesWidth(double space,
                                      CategoryAxis axis,
                                      int categories,
                                      int series)

Calculates the available space for each series.

Parameters:

space - the space along the entire axis (in Java2D units).

axis - the category axis.

categories - the number of categories.

series - the number of series.

Returns:

The width of one series.

getItemMiddle

public double getItemMiddle(Comparable<?> rowKey,
                            Comparable<?> columnKey,
                            CategoryDataset<?,?> dataset,
                            CategoryAxis axis,
                            Rectangle2D area,
                            RectangleEdge edge)

Returns the Java2D coordinate for the middle of the specified data item.

Specified by:

getItemMiddle in interface CategoryItemRenderer

Overrides:

getItemMiddle in class AbstractCategoryItemRenderer

Parameters:

rowKey - the row key.

columnKey - the column key.

dataset - the dataset.

axis - the axis.

area - the drawing area.

edge - the edge along which the axis lies.

Returns:

The Java2D coordinate.

equals

public boolean equals(Object obj)

Tests an object for equality with this instance.

Overrides:

equals in class AbstractCategoryItemRenderer

Parameters:

obj - the object (null permitted).

Returns:

A boolean.

hashCode

public int hashCode()

Returns a hash code for this instance.

Overrides:

hashCode in class AbstractCategoryItemRenderer

Returns:

A hash code.