com.github.mikephil.charting.renderer

Class LineChartRenderer

java.lang.Object

com.github.mikephil.charting.renderer.Renderer

com.github.mikephil.charting.renderer.DataRenderer

com.github.mikephil.charting.renderer.LineScatterCandleRadarRenderer

com.github.mikephil.charting.renderer.LineChartRenderer

public class LineChartRenderer
extends LineScatterCandleRadarRenderer

Field Summary

Fields

Modifier and Type	Field and Description
protected android.graphics.Path	cubicFillPath
protected android.graphics.Path	cubicPath
protected android.graphics.Canvas	mBitmapCanvas on this canvas, the paths are rendered, it is initialized with the pathBitmap
protected LineDataProvider	mChart
protected CircleBuffer[]	mCircleBuffers
protected android.graphics.Paint	mCirclePaintInner paint for the inner circle of the value indicators
protected android.graphics.Bitmap	mDrawBitmap Bitmap object used for drawing the paths (otherwise they are too long if rendered directly on the canvas)
protected LineBuffer[]	mLineBuffers

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

mAnimator, mDrawPaint, mHighlightPaint, mRenderPaint, mValuePaint

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

mMaxX, mMinX, mViewPortHandler

Constructor Summary

Constructors

Constructor and Description
LineChartRenderer(LineDataProvider chart, ChartAnimator animator, ViewPortHandler viewPortHandler)

Method Summary

Modifier and Type	Method and Description
protected void	drawCircles(android.graphics.Canvas c)
protected void	drawCubic(android.graphics.Canvas c, LineDataSet dataSet, java.util.List<Entry> entries) Draws a cubic line.
protected void	drawCubicFill(android.graphics.Canvas c, LineDataSet dataSet, android.graphics.Path spline, Transformer trans, int from, int to)
void	drawData(android.graphics.Canvas c) Draws the actual data in form of lines, bars, ...
protected void	drawDataSet(android.graphics.Canvas c, LineDataSet dataSet)
void	drawExtras(android.graphics.Canvas c) Draws any kind of additional information (e.g.
protected void	drawFilledPath(android.graphics.Canvas c, android.graphics.Path filledPath, int fillColor, int fillAlpha) Draws the provided path in filled mode with the provided color and alpha.
void	drawHighlighted(android.graphics.Canvas c, Highlight[] indices) Draws all highlight indicators for the values that are currently highlighted.
protected void	drawLinear(android.graphics.Canvas c, LineDataSet dataSet, java.util.List<Entry> entries) Draws a normal line.
protected void	drawLinearFill(android.graphics.Canvas c, LineDataSet dataSet, java.util.List<Entry> entries, int minx, int maxx, Transformer trans)
void	drawValues(android.graphics.Canvas c) Loops over all Entrys and draws their values.
void	initBuffers() Initializes the buffers used for rendering with a new size.
void	releaseBitmap() Releases the drawing bitmap.

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

drawHighlightLines

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

applyValueTextStyle, drawValue, getPaintHighlight, getPaintRender, getPaintValues

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

mChart

protected LineDataProvider mChart

mCirclePaintInner

protected android.graphics.Paint mCirclePaintInner

paint for the inner circle of the value indicators

mDrawBitmap

protected android.graphics.Bitmap mDrawBitmap

Bitmap object used for drawing the paths (otherwise they are too long if rendered directly on the canvas)

mBitmapCanvas

protected android.graphics.Canvas mBitmapCanvas

on this canvas, the paths are rendered, it is initialized with the pathBitmap

cubicPath

protected android.graphics.Path cubicPath

cubicFillPath

protected android.graphics.Path cubicFillPath

mLineBuffers

protected LineBuffer[] mLineBuffers

mCircleBuffers

protected CircleBuffer[] mCircleBuffers

Constructor Detail

LineChartRenderer

public LineChartRenderer(LineDataProvider chart,
                         ChartAnimator animator,
                         ViewPortHandler viewPortHandler)

Method Detail

initBuffers

public void initBuffers()

Description copied from class: DataRenderer

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

Specified by:

initBuffers in class DataRenderer

drawData

public void drawData(android.graphics.Canvas c)

Description copied from class: DataRenderer

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

Specified by:

drawData in class DataRenderer

drawDataSet

protected void drawDataSet(android.graphics.Canvas c,
                           LineDataSet dataSet)

drawCubic

protected void drawCubic(android.graphics.Canvas c,
                         LineDataSet dataSet,
                         java.util.List<Entry> entries)

Draws a cubic line.

Parameters:

c -

dataSet -

entries -

drawCubicFill

protected void drawCubicFill(android.graphics.Canvas c,
                             LineDataSet dataSet,
                             android.graphics.Path spline,
                             Transformer trans,
                             int from,
                             int to)

drawLinear

protected void drawLinear(android.graphics.Canvas c,
                          LineDataSet dataSet,
                          java.util.List<Entry> entries)

Draws a normal line.

Parameters:

c -

dataSet -

entries -

drawLinearFill

protected void drawLinearFill(android.graphics.Canvas c,
                              LineDataSet dataSet,
                              java.util.List<Entry> entries,
                              int minx,
                              int maxx,
                              Transformer trans)

drawFilledPath

protected void drawFilledPath(android.graphics.Canvas c,
                              android.graphics.Path filledPath,
                              int fillColor,
                              int fillAlpha)

Draws the provided path in filled mode with the provided color and alpha. Special thanks to Angelo Suzuki (https://github.com/tinsukE) for this.

Parameters:

c -

filledPath -

fillColor -

fillAlpha -

drawValues

public void drawValues(android.graphics.Canvas c)

Description copied from class: DataRenderer

Loops over all Entrys and draws their values.

Specified by:

drawValues in class DataRenderer

drawExtras

public void drawExtras(android.graphics.Canvas c)

Description copied from class: DataRenderer

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

Specified by:

drawExtras in class DataRenderer

drawCircles

protected void drawCircles(android.graphics.Canvas c)

drawHighlighted

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

Description copied from class: DataRenderer

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

Specified by:

drawHighlighted in class DataRenderer

indices - the highlighted values

releaseBitmap

public void releaseBitmap()

Releases the drawing bitmap. This should be called when LineChart.onDetachedFromWindow().