/*!
    *
    * Wijmo Library 5.20241.9
    * https://developer.mescius.com/wijmo
    *
    * Copyright(c) MESCIUS inc. All rights reserved.
    *
    * Licensed under the End-User License Agreement For MESCIUS Wijmo Software.
    * us.sales@mescius.com
    * https://developer.mescius.com/wijmo/licensing
    *
    */
/**
 * {@module wijmo.chart.render}
 * Provides various render engines to render flex-chart.
 * Add this module on page to support chart export in IE browsers.
*/
/**
 *
 */
export declare var ___keepComment: any;
import { Size, Point, Rect } from 'wijmo/wijmo';
import { IRenderEngine } from 'wijmo/wijmo.chart';
export declare class _CanvasRenderEngine implements IRenderEngine {
    private _element;
    private _canvas;
    private _svgEngine;
    private _fill;
    private _stroke;
    private _textFill;
    private _strokeWidth;
    private _fontSize;
    private _fontFamily;
    private _canvasRect;
    private _canvasDefaultFont;
    private _applyCSSStyles;
    private _cssPriority;
    private _readOnly;
    constructor(element: HTMLElement, applyCSSStyles?: boolean);
    beginRender(): void;
    endRender(): void;
    setViewportSize(w: number, h: number): void;
    readonly element: Element;
    fill: string;
    fontSize: string;
    fontFamily: string;
    stroke: string;
    strokeWidth: number;
    textFill: string;
    cssPriority: boolean;
    readOnly: boolean;
    addClipRect(clipRect: Rect, id: string): void;
    drawEllipse(cx: number, cy: number, rx: number, ry: number, className?: string, style?: any): any;
    drawRect(x: number, y: number, w: number, h: number, className?: string, style?: any, clipPath?: string): any;
    drawLine(x1: number, y1: number, x2: number, y2: number, className?: string, style?: any): any;
    drawLines(xs: number[], ys: number[], className?: string, style?: any, clipPath?: string, num?: number): any;
    drawSplines(xs: number[], ys: number[], className?: string, style?: any, clipPath?: string, num?: number): any;
    drawPolygon(xs: number[], ys: number[], className?: string, style?: any, clipPath?: string): any;
    drawPieSegment(cx: number, cy: number, r: number, startAngle: number, sweepAngle: number, className?: string, style?: any, clipPath?: string): any;
    drawDonutSegment(cx: number, cy: number, radius: number, innerRadius: number, startAngle: number, sweepAngle: number, className?: string, style?: any, clipPath?: string): any;
    drawString(s: string, pt: Point, className?: string, style?: any): any;
    drawStringRotated(s: string, pt: Point, center: Point, angle: number, className?: string, style?: any): any;
    measureString(s: string, className?: string, groupName?: string, style?: any): Size;
    startGroup(className?: string, clipPath?: string, createTransform?: boolean): any;
    endGroup(): void;
    drawImage(imageHref: string, x: number, y: number, w: number, h: number): any;
    private _applyCanvasClip;
    private _getOpacityColor;
    private _applyCanvasStyles;
    private _applyColor;
}