li.netcat.chart.util
Class RingPart

java.lang.Object
  li.netcat.chart.util.AbstractPart
      li.netcat.chart.util.GraphPart
          li.netcat.chart.util.PolarGraphPart
              li.netcat.chart.util.RingPart

All Implemented Interfaces:

Part

public class RingPart

extends PolarGraphPart

Represents a round graph that looks for example like this:

It can be used to paint pies and doughnuts. Each data segment can be empahsized by moving it in the radial direction.

Author:

Arthur Marxer

Field Summary

Fields inherited from class li.netcat.chart.util.PolarGraphPart

NET, RING

Fields inherited from class li.netcat.chart.util.GraphPart

STACK_STRATEGY_APPEND, STACK_STRATEGY_GROUP, STACK_TYPE_NOT_STACKED, STACK_TYPE_STACKED, STACK_TYPE_STACKED_PERCENT

Fields inherited from class li.netcat.chart.util.AbstractPart

BACKGROUND, FOREGROUND, PERSPECTIVE

Constructor Summary

RingPart(ChartModel model)
Constructs a new RingPart using the given ChartModel and the type STACK_TYPE_STACKED_PERCENT.

RingPart(ChartModel model, int stackType)
Constructs a new RingPart using the given ChartModel and the given type.

Method Summary

void	clearRadialMove() Clears all radial move entries.
float	getFlatness() Returns the maximum distance that the line segments used to approximate the curved segments are allowed.
Layout	getLayout(java.awt.Graphics g) Returns an instance of a layout that is able to report the bounds of this part and is able to paint this part.
float	getRadialMove(int rowIndex, int columnIndex) Returns the radial movement of a data element.
ValueLocation	getValueLocation(int rowIndex, int columnIndex) Abstract function that calculates a ValueLocation for a given cell.
void	setFlatness(float flatness) Sets the maximum distance that the line segments used to approximate the curved segments are allowed.
void	setRadialMove(int rowIndex, int columnIndex, float move) Sets a radial movement of a data element.

Methods inherited from class li.netcat.chart.util.PolarGraphPart

getCenterX, getCenterY, getConverter, getInnerRadius, getOrientation, getRadialScaleModel, getRadius, getStretch, getTangentialScaleModel, getThickness, invalidate, setRadialScaleModel, setSize, setStretch, setTangentialScaleModel

Methods inherited from class li.netcat.chart.util.GraphPart

getChartModel, getDiscreetLength, getDiscreetScaleModel, getGraphLook, getLegendModel, getNumericLength, getNumericScaleModel, getStackModel, setChartModel, setDiscreetLength, setDiscreetScaleModel, setGraphLook, setLegendModel, setNumericLength, setNumericScaleModel, setStackModel

Methods inherited from class li.netcat.chart.util.AbstractPart

getChart, getPerspective, setChart, setPerspective

Methods inherited from class java.lang.Object

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

Constructor Detail

RingPart

public RingPart(ChartModel model)

Constructs a new RingPart using the given ChartModel and the type STACK_TYPE_STACKED_PERCENT.

Parameters:

model - The ChartModel that provides the data. null will be replaced by an empty ChartModel.

RingPart

public RingPart(ChartModel model,
                int stackType)

Constructs a new RingPart using the given ChartModel and the given type.

Parameters:

model - The ChartModel that provides the data. null will be replaced by an empty ChartModel.

stackType - The type of the resulting graph. Specify one of STACK_TYPE_NOT_STACKED, STACK_TYPE_STACKED or STACK_TYPE_STACKED_PERCENT. Note that values other than STACK_TYPE_STACKED_PERCENT are not usual.

Method Detail

getFlatness

public float getFlatness()

Returns the maximum distance that the line segments used to approximate the curved segments are allowed.

Returns:

The maximum distance that the line segments used to approximate the curved segments are allowed.

setFlatness

public void setFlatness(float flatness)

Sets the maximum distance that the line segments used to approximate the curved segments are allowed.

Parameters:

flatness - The maximum distance that the line segments used to approximate the curved segments are allowed. It must be >= 0.001f.

clearRadialMove

public void clearRadialMove()

Clears all radial move entries.

setRadialMove

public void setRadialMove(int rowIndex,
                          int columnIndex,
                          float move)

Sets a radial movement of a data element.

Parameters:

rowIndex - The row index of the data element in the model.

columnIndex - The column index of the data element in the model.

move - The amount of the movement in pixel. Negative values move the element towards the center.

getRadialMove

public float getRadialMove(int rowIndex,
                           int columnIndex)

Returns the radial movement of a data element.

Parameters:

rowIndex - The row index of the data element in the model.

columnIndex - The column index of the data element in the model.

getValueLocation

public ValueLocation getValueLocation(int rowIndex,
                                      int columnIndex)

Description copied from class: GraphPart

Abstract function that calculates a ValueLocation for a given cell.

Overrides:

getValueLocation in class PolarGraphPart

getLayout

public Layout getLayout(java.awt.Graphics g)

Description copied from interface: Part

Returns an instance of a layout that is able to report the bounds of this part and is able to paint this part.

Parameters:

g - The relevant graphics object.

Returns:

A layout that is able to report the bounds of this part and is able to paint this part. This method may also return null.