com.jrefinery.chart
Class HorizontalIntervalBarRenderer

java.lang.Object
  com.jrefinery.chart.AbstractCategoryItemRenderer
      com.jrefinery.chart.BarRenderer
          com.jrefinery.chart.HorizontalIntervalBarRenderer

All Implemented Interfaces:

CategoryItemRenderer

public class HorizontalIntervalBarRenderer
extends BarRenderer
implements CategoryItemRenderer

A renderer that draws horizontal bars representing a data range on a category plot.

One application of this renderer is the creation of Gantt charts.

Field Summary

Fields inherited from class com.jrefinery.chart.BarRenderer

BAR_OUTLINE_WIDTH_THRESHOLD, categoryGapSpan, categorySpan, itemGapSpan, itemSpan, itemWidth, zeroInJava2D

Fields inherited from class com.jrefinery.chart.AbstractCategoryItemRenderer

info, toolTipGenerator

Constructor Summary

HorizontalIntervalBarRenderer()
The default constructor.

HorizontalIntervalBarRenderer(com.jrefinery.chart.tooltips.CategoryToolTipGenerator toolTipGenerator)
Constructs a new renderer with the specified tool tip generator.

Method Summary

int	barWidthsPerCategory(CategoryDataset data) This renderer shows each series within a category as a separate bar (as opposed to a stacked bar renderer).
void	drawCategoryItem(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, CategoryPlot plot, ValueAxis axis, CategoryDataset data, int series, java.lang.Object category, int categoryIndex, java.lang.Object previousCategory) Draw a single data item.
void	drawRangeMarker(java.awt.Graphics2D g2, CategoryPlot plot, ValueAxis axis, Marker marker, java.awt.geom.Rectangle2D axisDataArea, java.awt.Shape dataClipRegion) Draws a vertical line across the chart to represent the marker.
boolean	hasItemGaps() Returns true, since for this renderer there are gaps between the items in one category.
void	initialise(java.awt.Graphics2D g2, java.awt.geom.Rectangle2D dataArea, CategoryPlot plot, CategoryDataset data, ChartRenderingInfo info) Initialises the renderer.

Methods inherited from class com.jrefinery.chart.BarRenderer

calculateCategoryAndItemSpans, isStacked

Methods inherited from class com.jrefinery.chart.AbstractCategoryItemRenderer

drawPlotBackground, getAxisArea, getDataClipRegion, getToolTipGenerator, setToolTipGenerator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.jrefinery.chart.CategoryItemRenderer

drawPlotBackground, getAxisArea, getDataClipRegion, isStacked

Constructor Detail

HorizontalIntervalBarRenderer

public HorizontalIntervalBarRenderer()

The default constructor.

HorizontalIntervalBarRenderer

public HorizontalIntervalBarRenderer(com.jrefinery.chart.tooltips.CategoryToolTipGenerator toolTipGenerator)

Constructs a new renderer with the specified tool tip generator.

Parameters:

toolTipGenerator - The tool tip generator.

Method Detail

initialise

public void initialise(java.awt.Graphics2D g2,
                       java.awt.geom.Rectangle2D dataArea,
                       CategoryPlot plot,
                       CategoryDataset data,
                       ChartRenderingInfo info)

Initialises the renderer.

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 BarRenderer

Parameters:

g2 - The graphics device.

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

plot - The plot.

data - The data.

info - Collects chart rendering information for return to caller.

hasItemGaps

public boolean hasItemGaps()

Returns true, since for this renderer there are gaps between the items in one category.

Specified by:

hasItemGaps in class BarRenderer

barWidthsPerCategory

public int barWidthsPerCategory(CategoryDataset data)

This renderer shows each series within a category as a separate bar (as opposed to a stacked bar renderer).

Specified by:

barWidthsPerCategory in class BarRenderer

Parameters:

data - The data.

drawRangeMarker

public void drawRangeMarker(java.awt.Graphics2D g2,
                            CategoryPlot plot,
                            ValueAxis axis,
                            Marker marker,
                            java.awt.geom.Rectangle2D axisDataArea,
                            java.awt.Shape dataClipRegion)

Draws a vertical line across the chart to represent the marker.

Specified by:

drawRangeMarker in interface CategoryItemRenderer

Parameters:

g2 - The graphics device.

plot - The plot.

axis - The value axis.

marker - The marker line.

axisDataArea - The axis data area.

dataClipRegion - The data clip region.

drawCategoryItem

public void drawCategoryItem(java.awt.Graphics2D g2,
                             java.awt.geom.Rectangle2D dataArea,
                             CategoryPlot plot,
                             ValueAxis axis,
                             CategoryDataset data,
                             int series,
                             java.lang.Object category,
                             int categoryIndex,
                             java.lang.Object previousCategory)

Draw a single data item.

Specified by:

drawCategoryItem in interface CategoryItemRenderer

Parameters:

g2 - The graphics device.

plotArea - The data plot area.

plot - The plot.

axis - The range axis.

data - The data.

series - The series number (zero-based index).

category - The category.

categoryIndex - The category number (zero-based index).

previousCategory - The previous category (will be null when the first category is drawn).