Class PieChartRenderer

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

Hierarchy (View Summary)

Constructors

constructor

Properties

animator mBitmapCanvas mChart mDrawBitmap mHighlightPaint mHolePaint mRenderPaint mTransparentCirclePaint mValuePaint mViewPortHandler

Accessors

centerTextLastBounds centerTextPaint entryLabelsPaint highlightPaint holePaint rectBuffer renderPaint transparentCirclePaint valuePaint

Methods

applyValueTextStyle calculateMinimumRadiusForSpacedSlice drawCenterText drawData drawDataSet drawEntryLabel drawExtras drawHighlighted drawHole drawIcon drawRoundedSlices drawValue drawValues getSliceSpace initBuffers isDrawingValuesAllowed releaseBitmap

Constructors

constructor

Properties

animator

animator: ChartAnimator

the animator object used to perform animations on the chart data

ProtectedmBitmapCanvas

mBitmapCanvas: Canvas

ProtectedmChart

mChart: PieChart

ProtectedmDrawBitmap

mDrawBitmap: WeakRef<ImageSource>

Bitmap for drawing the center hole

ProtectedmHighlightPaint

mHighlightPaint: Paint

palet used for highlighting values

ProtectedmHolePaint

mHolePaint: Paint

palet for the hole in the center of the pie chart and the transparent circle

ProtectedmRenderPaint

mRenderPaint: Paint

main palet object used for rendering

ProtectedmTransparentCirclePaint

mTransparentCirclePaint: Paint

ProtectedmValuePaint

mValuePaint: Paint

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

ProtectedmViewPortHandler

mViewPortHandler: ViewPortHandler

the component that handles the drawing area of the chart and it's offsets

Accessors

ProtectedcenterTextLastBounds

  • get centerTextLastBounds(): RectF

  • Returns RectF

centerTextPaint

  • get centerTextPaint(): Paint

  • Returns Paint

entryLabelsPaint

  • get entryLabelsPaint(): Paint

  • Returns Paint

highlightPaint

  • get highlightPaint(): Paint

  • Returns Paint

holePaint

  • get holePaint(): Paint

  • Returns Paint

ProtectedrectBuffer

  • get rectBuffer(): RectF[]

  • Returns RectF[]

renderPaint

  • get renderPaint(): Paint

  • Returns Paint

transparentCirclePaint

  • get transparentCirclePaint(): Paint

  • Returns Paint

valuePaint

  • get valuePaint(): Paint

  • Returns Paint

Methods

ProtectedapplyValueTextStyle

  • applyValueTextStyle(set: IDataSet<any>): void

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

    Parameters

    Returns void

ProtectedcalculateMinimumRadiusForSpacedSlice

  • calculateMinimumRadiusForSpacedSlice(
        center: MPPointF,
        radius: any,
        angle: any,
        arcStartPointX: any,
        arcStartPointY: any,
        startAngle: any,
        sweepAngle: any,
    ): number

  • Parameters

    • center: MPPointF
    • radius: any
    • angle: any
    • arcStartPointX: any
    • arcStartPointY: any
    • startAngle: any
    • sweepAngle: any

    Returns number

ProtecteddrawCenterText

  • drawCenterText(c: Canvas): void

  • Draws the description text in the center of the pie chart makes most sense when center-hole is enabled.

    Parameters

    • c: Canvas

    Returns void

drawData

  • drawData(c: Canvas): void

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

    Parameters

    • c: Canvas

    Returns void

ProtecteddrawDataSet

  • drawDataSet(c: Canvas, dataSet: IPieDataSet): boolean

  • Parameters

    Returns boolean

ProtecteddrawEntryLabel

  • drawEntryLabel(c: Canvas, label: any, x: any, y: any, paint: Paint): void

  • Draws an entry label at the specified position.

    Parameters

    • c: Canvas
    • label: any
    • x: any
    • y: any
    • paint: Paint

    Returns void

drawExtras

  • drawExtras(c: Canvas): void

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

    Parameters

    • c: Canvas

    Returns void

drawHighlighted

  • drawHighlighted(c: Canvas, indices: Highlight<Entry>[]): void

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

    Parameters

    Returns void

ProtecteddrawHole

  • drawHole(c: Canvas): void

  • Draws the hole in the center of the chart and the transparent circle / hole.

    Parameters

    • c: Canvas

    Returns void

drawIcon

  • drawIcon<T>(
        canvas: Canvas,
        chart: Chart<any, any, any>,
        dataSet: DataSet<any>,
        dataSetIndex: number,
        entry: T,
        entryIndex: number,
        icon: ImageSource | Shape,
        x: number,
        y: number,
        customRender?: BaseCustomRenderer,
    ): void

  • Draws the icons of the given entry

    Type Parameters

    • T

    Parameters

    • canvas: Canvas

      canvas

    • chart: Chart<any, any, any>

      icon to draw

    • dataSet: DataSet<any>
    • dataSetIndex: number
    • entry: T
    • entryIndex: number
    • icon: ImageSource | Shape

      icon to draw

    • x: number

      position

    • y: number

      position

    • OptionalcustomRender: BaseCustomRenderer

    Returns void

ProtecteddrawRoundedSlices

  • drawRoundedSlices(c: Canvas): void

  • This gives all pie-slices a rounded edge.

    Parameters

    • c: Canvas

    Returns void

drawValue

  • drawValue<T>(
        c: Canvas,
        chart: Chart<any, any, any>,
        dataSet: DataSet<any>,
        dataSetIndex: number,
        entry: T,
        entryIndex: any,
        valueText: string,
        x: number,
        y: number,
        color: string | Color,
        paint: Paint,
        customRender?: BaseCustomRenderer,
    ): void

  • Draws the value of the given entry by using the provided IValueFormatter.

    Type Parameters

    • T

    Parameters

    • c: Canvas

      canvas

    • chart: Chart<any, any, any>
    • dataSet: DataSet<any>
    • dataSetIndex: number
    • entry: T

      label to draw

    • entryIndex: any

      label to draw

    • valueText: string

      label to draw

    • x: number

      position

    • y: number

      position

    • color: string | Color
    • paint: Paint
    • OptionalcustomRender: BaseCustomRenderer

    Returns void

drawValues

  • drawValues(c: Canvas): void

  • Loops over all Entrys and draws their values.

    Parameters

    • c: Canvas

    Returns void

ProtectedgetSliceSpace

  • getSliceSpace(dataSet: IPieDataSet): number

  • Calculates the sliceSpace to use based on visible values and their size compared to the set sliceSpace.

    Parameters

    Returns number

initBuffers

  • initBuffers(): void

  • Returns void

ProtectedisDrawingValuesAllowed

releaseBitmap

  • releaseBitmap(): void

  • Releases the drawing bitmap.

    Returns void

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