com.androidplot.xy

Class LineAndPointRenderer<FormatterType extends LineAndPointFormatter>

java.lang.Object

com.androidplot.ui.SeriesRenderer<XYPlot,SeriesType,XYFormatterType>

com.androidplot.xy.XYSeriesRenderer<XYSeries,FormatterType>

com.androidplot.xy.LineAndPointRenderer<FormatterType>

Direct Known Subclasses:

StepRenderer

public class LineAndPointRenderer<FormatterType extends LineAndPointFormatter>
extends XYSeriesRenderer<XYSeries,FormatterType>

Renders a point as a line with the vertices marked. Requires 2 or more points to be rendered.

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	ONE
protected ConcurrentHashMap<XYSeries,ArrayList<android.graphics.PointF>>	pointsCaches
protected static int	ZERO

Constructor Summary

Constructors

Constructor and Description
LineAndPointRenderer(XYPlot plot)

Method Summary

Modifier and Type	Method and Description
protected void	appendToPath(android.graphics.Path path, android.graphics.PointF thisPoint, android.graphics.PointF lastPoint) This method exists for StepRenderer to override without having to duplicate any additional code.
protected android.graphics.PointF	convertPoint(XYCoords coord, android.graphics.RectF plotArea)
protected void	cullPointsCache()
void	doDrawLegendIcon(android.graphics.Canvas canvas, android.graphics.RectF rect, LineAndPointFormatter formatter) Draw the legend icon in the rect passed in.
protected void	drawSeries(android.graphics.Canvas canvas, android.graphics.RectF plotArea, XYSeries series, LineAndPointFormatter formatter)
protected Interpolator	getInterpolator(InterpolationParams params) TODO: retrieve from a persistent registry
protected ArrayList<android.graphics.PointF>	getPointsCache(XYSeries series) Retrieves or initializes a list for storing calculated screen-coords to render as points.
void	onRender(android.graphics.Canvas canvas, android.graphics.RectF plotArea, XYSeries series, FormatterType formatter, RenderStack stack)
protected void	renderPath(android.graphics.Canvas canvas, android.graphics.RectF plotArea, android.graphics.Path path, android.graphics.PointF firstPoint, android.graphics.PointF lastPoint, LineAndPointFormatter formatter)
protected void	renderPoints(android.graphics.Canvas canvas, android.graphics.RectF plotArea, XYSeries series, int iStart, int iEnd, List<android.graphics.PointF> points, LineAndPointFormatter formatter)

Methods inherited from class com.androidplot.xy.XYSeriesRenderer

getUniqueRegionFormatters

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

Field Detail

ZERO

protected static final int ZERO

See Also:

Constant Field Values

ONE

protected static final int ONE

See Also:

Constant Field Values

pointsCaches

protected final ConcurrentHashMap<XYSeries,ArrayList<android.graphics.PointF>> pointsCaches

Constructor Detail

LineAndPointRenderer

public LineAndPointRenderer(XYPlot plot)

Method Detail

onRender

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

Specified by:

onRender in class SeriesRenderer<XYPlot,XYSeries,FormatterType extends LineAndPointFormatter>

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

doDrawLegendIcon

public void doDrawLegendIcon(android.graphics.Canvas canvas,
                             android.graphics.RectF rect,
                             LineAndPointFormatter formatter)

Description copied from class: SeriesRenderer

Draw the legend icon in the rect passed in.

Specified by:

doDrawLegendIcon in class SeriesRenderer<XYPlot,XYSeries,FormatterType extends LineAndPointFormatter>

appendToPath

protected void appendToPath(android.graphics.Path path,
                            android.graphics.PointF thisPoint,
                            android.graphics.PointF lastPoint)

This method exists for StepRenderer to override without having to duplicate any additional code.

getPointsCache

protected ArrayList<android.graphics.PointF> getPointsCache(XYSeries series)

Retrieves or initializes a list for storing calculated screen-coords to render as points. Also handles automatic resizing and culling of unused caches. Should only be called once per render cycle.

Parameters:

series -

Returns:

cullPointsCache

protected void cullPointsCache()

drawSeries

protected void drawSeries(android.graphics.Canvas canvas,
                          android.graphics.RectF plotArea,
                          XYSeries series,
                          LineAndPointFormatter formatter)

getInterpolator

protected Interpolator getInterpolator(InterpolationParams params)

TODO: retrieve from a persistent registry

Parameters:

params -

Returns:

An interpol

convertPoint

protected android.graphics.PointF convertPoint(XYCoords coord,
                                               android.graphics.RectF plotArea)

renderPoints

protected void renderPoints(android.graphics.Canvas canvas,
                            android.graphics.RectF plotArea,
                            XYSeries series,
                            int iStart,
                            int iEnd,
                            List<android.graphics.PointF> points,
                            LineAndPointFormatter formatter)

renderPath

protected void renderPath(android.graphics.Canvas canvas,
                          android.graphics.RectF plotArea,
                          android.graphics.Path path,
                          android.graphics.PointF firstPoint,
                          android.graphics.PointF lastPoint,
                          LineAndPointFormatter formatter)