lecho.lib.hellocharts.renderer

Class PieChartRenderer

java.lang.Object

lecho.lib.hellocharts.renderer.AbstractChartRenderer

lecho.lib.hellocharts.renderer.PieChartRenderer

All Implemented Interfaces:

ChartRenderer

public class PieChartRenderer
extends AbstractChartRenderer

Default renderer for PieChart. PieChart doesn't use viewport concept so it a little different than others chart types.

Field Summary

Fields inherited from class lecho.lib.hellocharts.renderer.AbstractChartRenderer

chart, computator, DEFAULT_LABEL_MARGIN_DP, density, fontMetrics, isValueLabelBackgroundAuto, isValueLabelBackgroundEnabled, isViewportCalculationEnabled, labelBackgroundPaint, labelBackgroundRect, labelBuffer, labelMargin, labelOffset, labelPaint, scaledDensity, selectedValue

Constructor Summary

Constructors

Constructor and Description
PieChartRenderer(android.content.Context context, Chart chart, PieChartDataProvider dataProvider)

Method Summary

Modifier and Type	Method and Description
boolean	checkTouch(float touchX, float touchY) Checks if given pixel coordinates corresponds to any chart value.
void	draw(android.graphics.Canvas canvas) Draw chart data.
void	drawLabels(android.graphics.Canvas canvas)
void	drawUnclipped(android.graphics.Canvas canvas) Draw chart data that should not be clipped to contentRect area.
int	getChartRotation()
float	getCircleFillRatio()
android.graphics.RectF	getCircleOval()
SliceValue	getValueForAngle(int angle, SelectedValue selectedValue) Returns SliceValue that is under given angle, selectedValue (if not null) will be hold slice index.
void	onChartDataChanged()
void	onChartSizeChanged()
void	onChartViewportChanged()
void	setChartRotation(int rotation)
void	setCircleFillRatio(float fillRatio) Set how much of view area should be taken by chart circle.
void	setCircleOval(android.graphics.RectF orginCircleOval)

Methods inherited from class lecho.lib.hellocharts.renderer.AbstractChartRenderer

clearTouch, drawLabelTextAndBackground, getCurrentViewport, getMaximumViewport, getSelectedValue, isTouched, isViewportCalculationEnabled, resetRenderer, selectValue, setCurrentViewport, setMaximumViewport, setViewportCalculationEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

PieChartRenderer

public PieChartRenderer(android.content.Context context,
                        Chart chart,
                        PieChartDataProvider dataProvider)

Method Detail

onChartSizeChanged

public void onChartSizeChanged()

onChartDataChanged

public void onChartDataChanged()

Specified by:

onChartDataChanged in interface ChartRenderer

Overrides:

onChartDataChanged in class AbstractChartRenderer

onChartViewportChanged

public void onChartViewportChanged()

draw

public void draw(android.graphics.Canvas canvas)

Description copied from interface: ChartRenderer

Draw chart data.

drawUnclipped

public void drawUnclipped(android.graphics.Canvas canvas)

Description copied from interface: ChartRenderer

Draw chart data that should not be clipped to contentRect area.

checkTouch

public boolean checkTouch(float touchX,
                          float touchY)

Description copied from interface: ChartRenderer

Checks if given pixel coordinates corresponds to any chart value. If yes return true and set selectedValue, if not selectedValue should be *cleared* and method should return false.

drawLabels

public void drawLabels(android.graphics.Canvas canvas)

getCircleOval

public android.graphics.RectF getCircleOval()

setCircleOval

public void setCircleOval(android.graphics.RectF orginCircleOval)

getChartRotation

public int getChartRotation()

setChartRotation

public void setChartRotation(int rotation)

getValueForAngle

public SliceValue getValueForAngle(int angle,
                                   SelectedValue selectedValue)

Returns SliceValue that is under given angle, selectedValue (if not null) will be hold slice index.

getCircleFillRatio

public float getCircleFillRatio()

See Also:

setCircleFillRatio(float)

setCircleFillRatio

public void setCircleFillRatio(float fillRatio)

Set how much of view area should be taken by chart circle. Value should be between 0 and 1. Default is 1 so circle will have radius equals min(View.width, View.height).