com.telerik.widget.chart.engine.dataPoints

Class PieDataPoint

java.lang.Object

com.telerik.widget.chart.engine.propertyStore.PropertyBagObject

com.telerik.widget.chart.engine.elementTree.ChartNode

com.telerik.widget.chart.engine.dataPoints.DataPoint

com.telerik.widget.chart.engine.dataPoints.SingleValueDataPoint

com.telerik.widget.chart.engine.dataPoints.PieDataPoint

All Implemented Interfaces:

LegendSelectable

public class PieDataPoint
extends SingleValueDataPoint
implements LegendSelectable

Represents a single-value data point plotted by a pie widget.

Field Summary

Fields inherited from class com.telerik.widget.chart.engine.dataPoints.DataPoint

desiredSize, isEmpty, isPositive

Fields inherited from class com.telerik.widget.chart.engine.elementTree.ChartNode

PROPERTY_CHANGED_MESSAGE, PROPERTY_CHANGING_MESSAGE, trackPropertyChanged, trackPropertyChanging

Constructor Summary

Constructors

Constructor and Description
PieDataPoint()

Method Summary

Modifier and Type	Method and Description
String	getName()
double	getRelativeOffsetFromCenter() Gets the offset of the point from the center of the pie relative to the radius.
LegendSelectableListener	getSelectedChangeListener()
double	normalizedValue() Gets the current normalized value.
double	percent() Gets the ratio between the value of this data point and the total value of all data points converted to percentage.
void	setIsSelected(boolean isSelected) Sets a value indicating whether the data point is currently in a "Selected" state.
void	setName(String value)
void	setRelativeOffsetFromCenter(double value) Sets the offset of the point from the center of the pie relative to the radius.
void	setSelectedChangeListener(LegendSelectableListener listener)
double	startAngle() Gets the value of the angle where the first side of the pie slice, that presents this data point, resides.
double	sweepAngle() Gets the value of the central angle of the pie slice that represents this data point.
void	update(double startAngle, double sweepAngle, double normalizedValue) Updates the values of this data point.

Methods inherited from class com.telerik.widget.chart.engine.dataPoints.SingleValueDataPoint

getTooltipTokens, getValue, getValueForAxis, setValue

Methods inherited from class com.telerik.widget.chart.engine.dataPoints.DataPoint

getCenter, getCenterX, getCenterY, getDataItem, getIsSelected, getLabel, setDataItem, setLabel, setValueFromAxis

Methods inherited from class com.telerik.widget.chart.engine.elementTree.ChartNode

applyLayoutRounding, arrange, arrange, chartArea, clearValue, collectionIndex, getLayoutSlot, getNodeState, getParent, getPresenter, index, invalidate, isTreeLoaded, isVisible, load, setIsVisible, setParent, setValue

Methods inherited from class com.telerik.widget.chart.engine.propertyStore.PropertyBagObject

getTypedValue, getValue, isLocalValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.telerik.widget.primitives.legend.LegendSelectable

getIsSelected

Constructor Detail

PieDataPoint

public PieDataPoint()

Method Detail

percent

public double percent()

Gets the ratio between the value of this data point and the total value of all data points converted to percentage.

Returns:

the percentage of the total value that this data point's value holds

getRelativeOffsetFromCenter

public double getRelativeOffsetFromCenter()

Gets the offset of the point from the center of the pie relative to the radius. The value is between 0 and 1.0, where 0 means that there is no offset and 1.0 means that the offset is the same as the radius.

Returns:

the offset from the center relative to the radius

setRelativeOffsetFromCenter

public void setRelativeOffsetFromCenter(double value)

Sets the offset of the point from the center of the pie relative to the radius. The value is between 0 and 1.0, where 0 means that there is no offset and 1.0 means that the offset is the same as the radius.

Parameters:

value - the new offset

setName

public void setName(String value)

getName

public String getName()

startAngle

public double startAngle()

Gets the value of the angle where the first side of the pie slice, that presents this data point, resides. The value is in the [0, 360) interval.

Returns:

the starting angle of this data point

sweepAngle

public double sweepAngle()

Gets the value of the central angle of the pie slice that represents this data point. The value is in the [0, 360] interval.

Returns:

the sweep angle of this data point

normalizedValue

public double normalizedValue()

Gets the current normalized value. The normalized value is from the [0, 1] interval and represents the ratio between this data point's actual value and the total value of all data points from the same series.

Returns:

the normalized value

update

public void update(double startAngle,
                   double sweepAngle,
                   double normalizedValue)

Updates the values of this data point. The params indicate the angle where this data point starts, the angle that it consumes and the ratio of its value to the total value of all data points from the same series.

Parameters:

startAngle - the start angle of this data point

sweepAngle - the sweep angle of this data point

normalizedValue - the normalized value for this data point

setIsSelected

public void setIsSelected(boolean isSelected)

Description copied from class: DataPoint

Sets a value indicating whether the data point is currently in a "Selected" state.

Specified by:

setIsSelected in interface LegendSelectable

Overrides:

setIsSelected in class DataPoint

Parameters:

isSelected - the new state of the point.

setSelectedChangeListener

public void setSelectedChangeListener(LegendSelectableListener listener)

Specified by:

setSelectedChangeListener in interface LegendSelectable

getSelectedChangeListener

public LegendSelectableListener getSelectedChangeListener()

Specified by:

getSelectedChangeListener in interface LegendSelectable