Class PieChart

java.lang.Object

com.codename1.charts.views.AbstractChart

com.codename1.charts.views.RoundChart

com.codename1.charts.views.PieChart

public class PieChart
extends RoundChart

Shows each value from a CategorySeries as a slice of a circle.

Combine this chart with a DefaultRenderer to control colours, labels and gradients. The resulting PieChart can be embedded in a form via a com.codename1.charts.ChartComponent.

Field Summary

Fields inherited from class RoundChart

autoCalculateCenter, mCenterX, mCenterY, mDataset, mRenderer, NO_VALUE, SHAPE_WIDTH

Constructor Summary

Constructors

Constructor	Description
PieChart(CategorySeries dataset, DefaultRenderer renderer)	Builds a new pie chart instance.

Method Summary

Modifier and Type	Method	Description
void	draw(Canvas canvas, int x, int y, int width, int height, Paint paint)	The graphical representation of the pie chart.
Shape	getSegmentShape(int pointIndex)	Gets the shape of a pie segment given its point index.
SeriesSelection	getSeriesAndPointForScreenCoordinate(Point screenPoint)	Given screen coordinates, returns the series and point indexes of a chart element.

Methods inherited from class RoundChart

drawLegendShape, drawTitle, getCenterX, getCenterY, getLegendShapeWidth, getRenderer, isAutocalculateCenter, setAutocalculateCenter, setCenterX, setCenterY

Methods inherited from class AbstractChart

calculateDrawPoints, drawBackground, drawLabel, drawLegend, drawPath, drawPath, drawString, getExceed, getLabel, getLegendSize, isNullValue, isVertical

Methods inherited from class Object

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

Constructor Details

PieChart

public PieChart(CategorySeries dataset,
 DefaultRenderer renderer)

Builds a new pie chart instance.

Parameters

• dataset: the series dataset

• renderer: the series renderer

Method Details

draw

public void draw(Canvas canvas,
 int x,
 int y,
 int width,
 int height,
 Paint paint)

The graphical representation of the pie chart.

Parameters

• canvas: the canvas to paint to

• x: the top left x value of the view to draw to

• y: the top left y value of the view to draw to

• width: the width of the view to draw to

• height: the height of the view to draw to

• paint: the paint

Specified by:

draw in class AbstractChart

getSeriesAndPointForScreenCoordinate

public SeriesSelection getSeriesAndPointForScreenCoordinate(Point screenPoint)

Description copied from class: AbstractChart

Given screen coordinates, returns the series and point indexes of a chart element. If there is no chart element (line, point, bar, etc) at those coordinates, null is returned.

Parameters

• screenPoint

Returns

the series and point indexes

Overrides:

getSeriesAndPointForScreenCoordinate in class AbstractChart

getSegmentShape

public Shape getSegmentShape(int pointIndex)

Gets the shape of a pie segment given its point index.

Parameters

• pointIndex: The point index representing the pie segment.

Returns

A shape of the outline of the segment.