public class BubbleChart

Displays series of XYValueSeries entries as proportional bubbles on top of an XYChart plot.

Combine the chart with an XYMultipleSeriesDataset that contains one or more XYValueSeries instances and supply an XYMultipleSeriesRenderer. The resulting BubbleChart can be wrapped in a com.codename1.charts.ChartComponent to embed it inside a Codename One UI.

Fields

public static final String TYPE = "Bubble" The constant to identify this chart type.

Constructors

public BubbleChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) Builds a new bubble chart instance.

Methods

`public void drawSeries(Canvas canvas, Paint paint, List<Float> points, XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex)`	The graphical representation of a series.
`protected` `ClickableArea[] clickableAreasForPoints(List<Float> points, List<Double> values, float yAxisValue, int seriesIndex, int startIndex)`	Returns the clickable areas for all passed points
`public int getLegendShapeWidth(int seriesIndex)`	Returns the legend shape width.
`public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint)`	The graphical representation of the legend shape.
`public` `String getChartType()`	Returns the chart type identifier.

Inherited fields

From XYChart

mDataset, mRenderer

Inherited methods

From AbstractChart

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

From Object

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

Field details

TYPE

public static final String TYPE = "Bubble"

The constant to identify this chart type.

Constructor details

BubbleChart

public BubbleChart(XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer)

Builds a new bubble chart instance.

Parameters

dataset XYMultipleSeriesDataset: the multiple series dataset
renderer XYMultipleSeriesRenderer: the multiple series renderer

Method details

drawSeries

public void drawSeries(Canvas canvas, Paint paint, List<Float> points, XYSeriesRenderer renderer, float yAxisValue, int seriesIndex, int startIndex)

The graphical representation of a series.

Parameters

canvas Canvas: the canvas to paint to
paint Paint: the paint to be used for drawing
points List<Float>: the array of points to be used for drawing the series
renderer XYSeriesRenderer: the series renderer
yAxisValue float: the minimum value of the y-axis
seriesIndex int: the index of the series currently being drawn
startIndex int: the start index of the rendering points

clickableAreasForPoints

protected ClickableArea[] clickableAreasForPoints(List<Float> points, List<Double> values, float yAxisValue, int seriesIndex, int startIndex)

Returns the clickable areas for all passed points

Parameters

points List<Float>: the array of points
values List<Double>: the array of values of each point
yAxisValue float: the minimum value of the y axis
seriesIndex int: the index of the series to which the points belong
startIndex int: the start index of the rendering points

Returns

an array of rectangles with the clickable area

getLegendShapeWidth

public int getLegendShapeWidth(int seriesIndex)

Returns the legend shape width.

Parameters

seriesIndex int: the series index

Returns

the legend shape width

drawLegendShape

public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer renderer, float x, float y, int seriesIndex, Paint paint)

The graphical representation of the legend shape.

Parameters

canvas Canvas: the canvas to paint to
renderer SimpleSeriesRenderer: the series renderer
x float: the x value of the point the shape should be drawn at
y float: the y value of the point the shape should be drawn at
seriesIndex int: the series index
paint Paint: the paint to be used for drawing

getChartType

public String getChartType()

Returns the chart type identifier.

Returns

the chart type