com.github.mikephil.charting.renderer

Class DataRenderer

java.lang.Object

com.github.mikephil.charting.renderer.Renderer

com.github.mikephil.charting.renderer.DataRenderer

Direct Known Subclasses:

BarChartRenderer, BubbleChartRenderer, CombinedChartRenderer, LineScatterCandleRadarRenderer, PieChartRenderer

public abstract class DataRenderer
extends Renderer

Superclass of all render classes for the different data types (line, bar, ...).

Field Summary

Fields

Modifier and Type	Field and Description
protected ChartAnimator	mAnimator the animator object used to perform animations on the chart data
protected android.graphics.Paint	mDrawPaint
protected android.graphics.Paint	mHighlightPaint paint used for highlighting values
protected android.graphics.Paint	mRenderPaint main paint object used for rendering
protected android.graphics.Paint	mValuePaint paint object for drawing values (text representing values of chart entries)

Fields inherited from class com.github.mikephil.charting.renderer.Renderer

mMaxX, mMinX, mViewPortHandler

Constructor Summary

Constructors

Constructor and Description
DataRenderer(ChartAnimator animator, ViewPortHandler viewPortHandler)

Method Summary

Modifier and Type	Method and Description
protected void	applyValueTextStyle(DataSet<?> set) Applies the required styling (provided by the DataSet) to the value-paint object.
abstract void	drawData(android.graphics.Canvas c) Draws the actual data in form of lines, bars, ...
abstract void	drawExtras(android.graphics.Canvas c) Draws any kind of additional information (e.g.
abstract void	drawHighlighted(android.graphics.Canvas c, Highlight[] indices) Draws all highlight indicators for the values that are currently highlighted.
void	drawValue(android.graphics.Canvas c, ValueFormatter formatter, float value, Entry entry, int dataSetIndex, float x, float y) Draws the value of the given entry by using the provided ValueFormatter.
abstract void	drawValues(android.graphics.Canvas c) Loops over all Entrys and draws their values.
android.graphics.Paint	getPaintHighlight() Returns the Paint object this renderer uses for drawing highlight indicators.
android.graphics.Paint	getPaintRender() Returns the Paint object used for rendering.
android.graphics.Paint	getPaintValues() Returns the Paint object this renderer uses for drawing the values (value-text).
abstract void	initBuffers() Initializes the buffers used for rendering with a new size.

Methods inherited from class com.github.mikephil.charting.renderer.Renderer

calcXBounds, fitsBounds

Methods inherited from class java.lang.Object

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

Field Detail

mAnimator

protected ChartAnimator mAnimator

the animator object used to perform animations on the chart data

mRenderPaint

protected android.graphics.Paint mRenderPaint

main paint object used for rendering

mHighlightPaint

protected android.graphics.Paint mHighlightPaint

paint used for highlighting values

mDrawPaint

protected android.graphics.Paint mDrawPaint

mValuePaint

protected android.graphics.Paint mValuePaint

paint object for drawing values (text representing values of chart entries)

Constructor Detail

DataRenderer

public DataRenderer(ChartAnimator animator,
                    ViewPortHandler viewPortHandler)

Method Detail

getPaintValues

public android.graphics.Paint getPaintValues()

Returns the Paint object this renderer uses for drawing the values (value-text).

Returns:

getPaintHighlight

public android.graphics.Paint getPaintHighlight()

Returns the Paint object this renderer uses for drawing highlight indicators.

Returns:

getPaintRender

public android.graphics.Paint getPaintRender()

Returns the Paint object used for rendering.

Returns:

applyValueTextStyle

protected void applyValueTextStyle(DataSet<?> set)

Applies the required styling (provided by the DataSet) to the value-paint object.

Parameters:

set -

initBuffers

public abstract void initBuffers()

Initializes the buffers used for rendering with a new size. Since this method performs memory allocations, it should only be called if necessary.

drawData

public abstract void drawData(android.graphics.Canvas c)

Draws the actual data in form of lines, bars, ... depending on Renderer subclass.

Parameters:

c -

drawValues

public abstract void drawValues(android.graphics.Canvas c)

Loops over all Entrys and draws their values.

Parameters:

c -

drawValue

public void drawValue(android.graphics.Canvas c,
                      ValueFormatter formatter,
                      float value,
                      Entry entry,
                      int dataSetIndex,
                      float x,
                      float y)

Draws the value of the given entry by using the provided ValueFormatter.

Parameters:

c - canvas

formatter - formatter for custom value-formatting

value - the value to be drawn

entry - the entry the value belongs to

dataSetIndex - the index of the DataSet the drawn Entry belongs to

x - position

y - position

drawExtras

public abstract void drawExtras(android.graphics.Canvas c)

Draws any kind of additional information (e.g. line-circles).

Parameters:

c -

drawHighlighted

public abstract void drawHighlighted(android.graphics.Canvas c,
                                     Highlight[] indices)

Draws all highlight indicators for the values that are currently highlighted.

Parameters:

c -

indices - the highlighted values