com.jidesoft.chart.render
Class AbstractBarRenderer

java.lang.Object
  com.jidesoft.chart.render.AbstractRenderer
      com.jidesoft.chart.render.AbstractBarRenderer

All Implemented Interfaces:

BarRenderer

Direct Known Subclasses:

Bar3DRenderer, CylinderBarRenderer, DefaultBarRenderer, RaisedBarRenderer

public abstract class AbstractBarRenderer
extends AbstractRenderer
implements BarRenderer

An abstract super-class that can be sub-classed to write a bar renderer.

Field Summary

Fields inherited from class com.jidesoft.chart.render.AbstractRenderer

alwaysShowOutlines, PROPERTY_OUTLINE_WIDTH, ROLLOVER_INTENSITY, support

Constructor Summary

AbstractBarRenderer()

Method Summary

protected String	computeLabel(Chartable chartable)
protected Paint	createBarPaint(Chart chart, Chartable p, ChartStyle style, boolean isSelected, boolean hasRollover, boolean hasFocus, int x, int y, int width, int height) You can override this method to create a custom Paint that uses the dimensions of the bar.
protected Paint	getBarColor(Chart chart, Chartable p, ChartStyle style, boolean isSelected, boolean hasRollover, boolean hasFocus)
LabelStyle	getLabelStyle()
PointLabeler	getPointLabeler()
boolean	isLabelsVisible()
boolean	isZeroHeightBarsVisible() Returns a boolean value to indicate whether a bar with a zero height will be shown
protected void	renderBarLabel(Graphics2D g2d, Chart chart, ChartModel m, Chartable p, boolean isSelected, boolean hasRollover, boolean hasFocus, double x, double y, double width, double height)
void	setLabelStyle(LabelStyle labelStyle)
void	setLabelsVisible(boolean labelsVisible)
void	setPointLabeler(PointLabeler pointLabeler) Calling this method allows you to specify exactly how you would like the labels for the bars to appear.
void	setZeroHeightBarsVisible(boolean zeroHeightBarsVisible) Specify whether to show bars with a height of zero.

Methods inherited from class com.jidesoft.chart.render.AbstractRenderer

addPropertyChangeListener, getOutlineColor, getOutlineWidth, getSelectionColor, isAlwaysShowOutlines, removePropertyChangeListener, setAlwaysShowOutlines, setOutlineColor, setOutlineWidth, setSelectionColor

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.jidesoft.chart.render.BarRenderer

getMinimumBreadth, renderBar

Constructor Detail

AbstractBarRenderer

public AbstractBarRenderer()

Method Detail

isLabelsVisible

public boolean isLabelsVisible()

setLabelsVisible

public void setLabelsVisible(boolean labelsVisible)

getLabelStyle

public LabelStyle getLabelStyle()

setLabelStyle

public void setLabelStyle(LabelStyle labelStyle)

getPointLabeler

public PointLabeler getPointLabeler()

setPointLabeler

public void setPointLabeler(PointLabeler pointLabeler)

Calling this method allows you to specify exactly how you would like the labels for the bars to appear. For example you can set up a formatting for numeric variables or, in general, generate any text that you like.

Parameters:

pointLabeler - a function that maps a Chartable to a String to use as a label

isZeroHeightBarsVisible

public boolean isZeroHeightBarsVisible()

Returns a boolean value to indicate whether a bar with a zero height will be shown

Returns:

a boolean value to indicate whether a bar with a zero height will be shown

setZeroHeightBarsVisible

public void setZeroHeightBarsVisible(boolean zeroHeightBarsVisible)

Specify whether to show bars with a height of zero. Default value is false.

Parameters:

zeroHeightBarsVisible - boolean to indicate whether bars of zero height should be visible (with a line or flat plane in the case of a 3D rendering).

renderBarLabel

protected void renderBarLabel(Graphics2D g2d,
                              Chart chart,
                              ChartModel m,
                              Chartable p,
                              boolean isSelected,
                              boolean hasRollover,
                              boolean hasFocus,
                              double x,
                              double y,
                              double width,
                              double height)

computeLabel

protected String computeLabel(Chartable chartable)

createBarPaint

protected Paint createBarPaint(Chart chart,
                               Chartable p,
                               ChartStyle style,
                               boolean isSelected,
                               boolean hasRollover,
                               boolean hasFocus,
                               int x,
                               int y,
                               int width,
                               int height)

You can override this method to create a custom Paint that uses the dimensions of the bar. For example, you can create a gradient fill that always ranges from, say, red to yellow, regardless of the height of the bar.

getBarColor

protected Paint getBarColor(Chart chart,
                            Chartable p,
                            ChartStyle style,
                            boolean isSelected,
                            boolean hasRollover,
                            boolean hasFocus)