com.androidplot.pie

Class PieRenderer

java.lang.Object

com.androidplot.ui.SeriesRenderer<PieChart,Segment,SegmentFormatter>

com.androidplot.pie.PieRenderer

public class PieRenderer
extends SeriesRenderer<PieChart,Segment,SegmentFormatter>

Basic renderer for drawing pie charts.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PieRenderer.DonutMode

Constructor Summary

Constructors

Constructor and Description
PieRenderer(PieChart plot)

Method Summary

Modifier and Type	Method and Description
protected android.graphics.PointF	calculateLineEnd(float x, float y, float rad, float deg)
protected android.graphics.PointF	calculateLineEnd(android.graphics.PointF origin, float rad, float deg)
protected double	calculateScale(double[] values) Determines how many counts there are per cent of whatever the pie chart is displaying as a fraction, 1 being 100%.
protected void	doDrawLegendIcon(android.graphics.Canvas canvas, android.graphics.RectF rect, SegmentFormatter formatter) Draw the legend icon in the rect passed in.
protected void	drawSegment(android.graphics.Canvas canvas, android.graphics.RectF bounds, Segment seg, SegmentFormatter f, float rad, float startAngle, float sweep)
protected void	drawSegmentLabel(android.graphics.Canvas canvas, android.graphics.PointF origin, Segment seg, SegmentFormatter f)
Segment	getContainingSegment(android.graphics.PointF point) Retrieve the segment containing the specified point.
float	getEndDeg()
float	getRadius(android.graphics.RectF rect)
float	getStartDeg()
protected double[]	getValues()
void	onRender(android.graphics.Canvas canvas, android.graphics.RectF plotArea, Segment series, SegmentFormatter formatter, RenderStack stack)
void	setDonutSize(float size, PieRenderer.DonutMode mode)
void	setEndDeg(float deg)
void	setStartDeg(float deg)

Methods inherited from class com.androidplot.ui.SeriesRenderer

drawSeriesLegendIcon, getFormatter, getPlot, getSeriesAndFormatterList, getSeriesList, render, setPlot

Methods inherited from class java.lang.Object

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

Constructor Detail

PieRenderer

public PieRenderer(PieChart plot)

Method Detail

getRadius

public float getRadius(android.graphics.RectF rect)

onRender

public void onRender(android.graphics.Canvas canvas,
                     android.graphics.RectF plotArea,
                     Segment series,
                     SegmentFormatter formatter,
                     RenderStack stack)
              throws PlotRenderException

Specified by:

onRender in class SeriesRenderer<PieChart,Segment,SegmentFormatter>

series - The series to be rendered

formatter - The getFormatter that should be used to render the series

stack - Ordered list of all series being renderered. May be manipulated by the Renderer to gain effect.

Throws:

PlotRenderException

drawSegment

protected void drawSegment(android.graphics.Canvas canvas,
                           android.graphics.RectF bounds,
                           Segment seg,
                           SegmentFormatter f,
                           float rad,
                           float startAngle,
                           float sweep)

drawSegmentLabel

protected void drawSegmentLabel(android.graphics.Canvas canvas,
                                android.graphics.PointF origin,
                                Segment seg,
                                SegmentFormatter f)

doDrawLegendIcon

protected void doDrawLegendIcon(android.graphics.Canvas canvas,
                                android.graphics.RectF rect,
                                SegmentFormatter formatter)

Description copied from class: SeriesRenderer

Draw the legend icon in the rect passed in.

Specified by:

doDrawLegendIcon in class SeriesRenderer<PieChart,Segment,SegmentFormatter>

calculateScale

protected double calculateScale(double[] values)

Determines how many counts there are per cent of whatever the pie chart is displaying as a fraction, 1 being 100%.

getValues

protected double[] getValues()

calculateLineEnd

protected android.graphics.PointF calculateLineEnd(float x,
                                                   float y,
                                                   float rad,
                                                   float deg)

calculateLineEnd

protected android.graphics.PointF calculateLineEnd(android.graphics.PointF origin,
                                                   float rad,
                                                   float deg)

setDonutSize

public void setDonutSize(float size,
                         PieRenderer.DonutMode mode)

getContainingSegment

public Segment getContainingSegment(android.graphics.PointF point)

Retrieve the segment containing the specified point. This current implementation only matches against angle; clicks outside of the pie/donut inner/outer boundaries will still trigger a match on the segment whose begining and ending angle contains the angle of the line drawn between the pie chart's center point and the clicked point.

Parameters:

point - The clicked point

Returns:

Segment containing the clicked point.

setStartDeg

public void setStartDeg(float deg)

getStartDeg

public float getStartDeg()

setEndDeg

public void setEndDeg(float deg)

getEndDeg

public float getEndDeg()