@nativescript-community/ui-chart/renderer/PieChartRenderer.d.ts

A powerful chart / graph plugin, supporting line, bar, pie, radar, bubble, and candlestick charts as well as scaling, panning and animations.

import { ImageSource } from '@nativescript/core';
import { Canvas, Paint, RectF } from '@nativescript-community/ui-canvas';
import { DataRenderer } from './DataRenderer';
import { ChartAnimator } from '../animation/ChartAnimator';
import { PieChart } from '../charts/PieChart';
import { Highlight } from '../highlight/Highlight';
import { IPieDataSet } from '../interfaces/datasets/IPieDataSet';
import { MPPointF } from '../utils/MPPointF';
import { ViewPortHandler } from '../utils/ViewPortHandler';
export declare class PieChartRenderer extends DataRenderer {
    protected mChart: PieChart;
    /**
     * Bitmap for drawing the center hole
     */
    protected mDrawBitmap: WeakRef<ImageSource>;
    protected mBitmapCanvas: Canvas;
    /**
     * palet for the hole in the center of the pie chart and the transparent
     * circle
     */
    protected mHolePaint: Paint;
    protected mTransparentCirclePaint: Paint;
    /**
     * palet object for the text that can be displayed in the center of the
     * chart
     */
    private mCenterTextPaint;
    /**
     * palet object used for drwing the slice-text
     */
    private mEntryLabelsPaint;
    private mCenterTextLayout;
    private mCenterTextLastValue;
    private mCenterTextLastBounds;
    protected get centerTextLastBounds(): RectF;
    private mRectBuffer;
    protected get rectBuffer(): RectF[];
    constructor(chart: PieChart, animator: ChartAnimator, viewPortHandler: ViewPortHandler);
    get centerTextPaint(): Paint;
    get entryLabelsPaint(): Paint;
    get transparentCirclePaint(): Paint;
    get holePaint(): Paint;
    get valuePaint(): Paint;
    drawData(c: Canvas): void;
    protected calculateMinimumRadiusForSpacedSlice(center: MPPointF, radius: any, angle: any, arcStartPointX: any, arcStartPointY: any, startAngle: any, sweepAngle: any): number;
    /**
     * Calculates the sliceSpace to use based on visible values and their size compared to the set sliceSpace.
     *
     * @param dataSet
     * @return
     */
    protected getSliceSpace(dataSet: IPieDataSet): number;
    protected drawDataSet(c: Canvas, dataSet: IPieDataSet): boolean;
    drawValues(c: Canvas): void;
    /**
     * Draws an entry label at the specified position.
     *
     * @param c
     * @param label
     * @param x
     * @param y
     */
    protected drawEntryLabel(c: Canvas, label: any, x: any, y: any, paint: Paint): void;
    drawExtras(c: Canvas): void;
    /**
     * Draws the hole in the center of the chart and the transparent circle /
     * hole.
     */
    protected drawHole(c: Canvas): void;
    /**
     * Draws the description text in the center of the pie chart makes most
     * sense when center-hole is enabled.
     */
    protected drawCenterText(c: Canvas): void;
    drawHighlighted(c: Canvas, indices: Highlight[]): void;
    /**
     * This gives all pie-slices a rounded edge.
     *
     * @param c
     */
    protected drawRoundedSlices(c: Canvas): void;
    /**
     * Releases the drawing bitmap.
     */
    releaseBitmap(): void;
}