import { PointModel } from './../primitives/point-model';
import { ImageAttributes } from './canvas-interface';
import { RectAttributes, PathAttributes, TextAttributes, SubTextElement, TextBounds, ImageEntry } from './canvas-interface';
import { DrawingElement } from '../core/elements/drawing-element';
import { DrawingRenderer } from './renderer';
/**
 * @hidden
 * Canvas Renderer
 */
export declare class CanvasRenderer {
    /** @private */
    imageList: Record<string, ImageEntry[]>;
    private rectWidth;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @private
     * @returns {CanvasRenderingContext2D} - CanvasRenderingContext2D
     */
    static getContext(canvas: HTMLCanvasElement): CanvasRenderingContext2D;
    private setStyle;
    private setStyleFreetextEJ2;
    private rotateContext;
    private setFontStyle;
    /**
     * @param {string} dashArray - dashArray
     * @private
     * @returns {number[]} - array of number
     */
    parseDashArray(dashArray: string): number[];
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {RectAttributes} options - options
     * @private
     * @returns {void} - void
     */
    drawRectangle(canvas: HTMLCanvasElement, options: RectAttributes): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {RectAttributes} options - options
     * @private
     * @returns {void} - void
     */
    drawRectangleFreetextEJ2(canvas: HTMLCanvasElement, options: RectAttributes): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {PathAttributes} options - options
     * @private
     * @returns {void} - void
     */
    drawPath(canvas: HTMLCanvasElement, options: PathAttributes): void;
    private drawPathWithMask;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {PathAttributes} options - options
     * @param {Object[]} collection - collection
     * @private
     * @returns {void} - void
     */
    renderPath(canvas: HTMLCanvasElement, options: PathAttributes, collection: Object[]): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {TextAttributes} options - options
     * @param {boolean} isFreeTextAnnotation - isFreeTextAnnotation
     * @param {number} rectHeight - rectHeight
     * @private
     * @returns {void} - void
     */
    drawTextFreetextEJ2(canvas: HTMLCanvasElement, options: TextAttributes, isFreeTextAnnotation: boolean, rectHeight: number): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {TextAttributes} options - options
     * @param {boolean} isStampAnnotation - isStampAnnotation
     * @private
     * @returns {void} - void
     */
    drawTextEJ2(canvas: HTMLCanvasElement, options: TextAttributes, isStampAnnotation?: boolean): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {TextAttributes} options - options
     * @param {number} maxHeight - maxHeight
     * @param {boolean} isFreeTextAnnotation - isFreeTextAnnotation
     * @param {number} zoomFactor - zoomFactor
     * @private
     * @returns {void} - void
     */
    drawFreeTextBlazor(canvas: HTMLCanvasElement, options: TextAttributes, maxHeight: number, isFreeTextAnnotation: boolean, zoomFactor: number): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {TextAttributes} options - options
     * @param {number} maxHeight - maxHeight
     * @param {boolean} isFreeTextAnnotation - isFreeTextAnnotation
     * @param {number} zoomFactor - zoomFactor
     * @private
     * @returns {void} - void
     */
    drawText(canvas: HTMLCanvasElement, options: TextAttributes, maxHeight: number, isFreeTextAnnotation: boolean, zoomFactor: number): void;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {TextAttributes} options - options
     * @param {number} maxHeight - maxHeight
     * @param {boolean} isFreeTextAnnotation - isFreeTextAnnotation
     * @param {number} zoomFactor - zoomFactor
     * @private
     * @returns {void} - void
     */
    drawTextBlazor(canvas: HTMLCanvasElement, options: TextAttributes, maxHeight: number, isFreeTextAnnotation: boolean, zoomFactor: number): void;
    /**
     * Draw Line and Line Through
     *
     * @param {CanvasRenderingContext2D} ctx - ctx
     * @param {number} startPointX - startPointX
     * @param {number} startPointY - startPointY
     * @param {number} endPointX - endPointX
     * @param {number} endPointY - endPointY
     * @param {TextAttributes} options - endPointY
     * @private
     * @returns {void} - void
     */
    private drawLine;
    private m;
    private r;
    private a;
    private getMeetOffset;
    private getSliceOffset;
    private image;
    private isExistingImage;
    private updateImageList;
    private updateCanvasList;
    private loadImage;
    /**
     * @param {HTMLCanvasElement} canvas - canvas
     * @param {ImageAttributes} obj - obj
     * @param {SVGSVGElement} parentSvg - parentSvg
     * @param {boolean} fromPalette - fromPalette
     * @param {boolean} annotationCallback - annotationCallback
     * @param {string} annotationType - annotationType
     * @private
     * @returns {void} - void
     */
    drawImage(canvas: HTMLCanvasElement, obj: ImageAttributes, parentSvg?: SVGSVGElement, fromPalette?: boolean, annotationCallback?: (annotationID: string) => boolean, annotationType?: string): void;
    /**
     * @param {TextAttributes} text - text
     * @param {TextBounds} wrapBounds - wrapBounds
     * @param {SubTextElement[]} childNodes - childNodes
     * @param {number} lineHeight - lineHeight
     * @private
     * @returns {PointModel} - PointModel
     */
    labelAlign(text: TextAttributes, wrapBounds: TextBounds, childNodes: SubTextElement[], lineHeight: number): PointModel;
}
/**
 * @param {HTMLCanvasElement} canvas - canvas
 * @param {DrawingElement[]} drawingObjects - drawingObjects
 * @param {DrawingRenderer} renderer - renderer
 * @param {boolean} annotationCallback - annotationCallback
 * @param {string} annotationType - annotationType
 * @private
 * @returns {void} - void
 */
export declare function refreshDiagramElements(canvas: HTMLCanvasElement, drawingObjects: DrawingElement[], renderer: DrawingRenderer, annotationCallback?: (annotationID: string) => boolean, annotationType?: string): void;