lt.monarch.chart.chart2D.series
Class AbstractPieLabelsLayouter

java.lang.Object
  lt.monarch.chart.chart2D.series.AbstractPieLabelsLayouter

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

PieLabelsInsideLayouter, PieLabelsOutsideLayouter

public abstract class AbstractPieLabelsLayouter
extends java.lang.Object
implements java.io.Serializable

Abstract pie labels layouter class. It defines what methods the pie labels layouter should implement and implements common methods for all layouter in it.

See Also:

Serialized Form

Field Summary

Modifier and Type	Field and Description
protected PieLabelAlignment	labelAlignment
protected java.util.List<PieSliceLabelEntry>	pieLabelList

Constructor and Description

AbstractPieLabelsLayouter()

Method Summary

Modifier and Type	Method and Description
protected Point2D	calculateLabelPosition(double radius, double angle, Point2D center) Calculate label position in pie charts
PieLabelAlignment	getPieLabelAlignment() Gets alignment type of pie labels
protected boolean	isPieDifficult() If labels angle is smaller minAngle, than pie is difficult
abstract void	layout(java.util.List<PieSliceLabelEntry> labelList, Projector projector)
void	setPieLabelAlignment(PieLabelAlignment alignment) Sets alignment type of pie labels

Methods inherited from class java.lang.Object

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

Field Detail

pieLabelList

protected java.util.List<PieSliceLabelEntry> pieLabelList

labelAlignment

protected PieLabelAlignment labelAlignment

Constructor Detail

AbstractPieLabelsLayouter

public AbstractPieLabelsLayouter()

Method Detail

setPieLabelAlignment

public void setPieLabelAlignment(PieLabelAlignment alignment)

Sets alignment type of pie labels

Parameters:

alignment - alignment type

getPieLabelAlignment

public PieLabelAlignment getPieLabelAlignment()

Gets alignment type of pie labels

Returns:

alignment type

calculateLabelPosition

protected Point2D calculateLabelPosition(double radius,
                                         double angle,
                                         Point2D center)

Calculate label position in pie charts

Parameters:

radius - radius of pie

angle - angle of slice

center - point of the pie

Returns:

calculated point

isPieDifficult

protected boolean isPieDifficult()

If labels angle is smaller minAngle, than pie is difficult

Returns:

true, if pie is difficult

layout

public abstract void layout(java.util.List<PieSliceLabelEntry> labelList,
                            Projector projector)

Parameters:

labelList - list of labels

projector - projector of charts