@syncfusion/ej2-diagrams
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Feature-rich diagram control to create diagrams like flow charts, organizational charts, mind maps, and BPMN diagrams. Its rich feature set includes built-in shapes, editing, serializing, exporting, printing, overview, data binding, and automatic layouts.
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TypeScript
import { PointModel } from './../primitives/point-model';
import { ImageAttributes, StyleAttributes, BaseAttributes } from './canvas-interface';
import { RectAttributes, PathAttributes, TextAttributes, SubTextElement, TextBounds } from './canvas-interface';
import { IRenderer } from './../rendering/IRenderer';
import { PathElement } from '../core/elements/path-element';
import { TextElement } from '../core/elements/text-element';
import { ImageElement } from '../core/elements/image-element';
/**
* Canvas Renderer
*/
/** @private */
export declare class CanvasRenderer implements IRenderer {
/**
* Provide the context value for the canvas \
*
* @returns {CanvasRenderingContext2D} Provide the context value for the canvas .\
* @param { HTMLCanvasElement} canvas - Return the dashed array values .
* @private
*/
static getContext(canvas: HTMLCanvasElement): CanvasRenderingContext2D;
private static setCanvasSize;
/**
* Draw the gradient for the diagram shapes .\
*
* @returns {SVGElement} Draw the gradient for the diagram shapes.
* @param {StyleAttributes} options - Provide the options for the gradient element .
* @param {SVGElement} ctx - Provide canvas values .
* @param {string} x - Provide the x value for the gradient .
* @param {string} y - Provide the x value for the gradient .
* @private
*/
renderGradient(options: StyleAttributes, ctx: CanvasRenderingContext2D, x?: number, y?: number): CanvasRenderingContext2D;
/**
* Draw the shawdow for the rectangle shape in diagram \
*
* @returns {void} Draw the shawdow for the rectangle shape in diagram .\
*
* @param { SVGElement} options - Provide the base attributes .
* @param { RectAttributes} canvas - Provide the canvas values .
* @param { string} collection - Provide the collection value.
* @private
*/
renderShadow(options: BaseAttributes, canvas: HTMLCanvasElement, collection?: Object[]): void;
/**
* Create canvas element for the diagram \
*
* @returns {HTMLCanvasElement} Create canvas element for the diagram .\
*
* @param { SVGElement} id - Provide the id for the canvas.
* @param { Object} width - Provide the width for the canvas.
* @param { Object} height - Provide the height for the canvas.
* @private
*/
static createCanvas(id: string, width: number, height: number): HTMLCanvasElement;
private setStyle;
private rotateContext;
private setFontStyle;
/**
* Return the dashed array values \
*
* @returns {number[]} Return the dashed array values .\
* @param { SVGElement} dashArray - Return the dashed array values .
* @private
*/
parseDashArray(dashArray: string): number[];
private drawRoundedRect;
/**
* Draw the Rectangle for the diagram \
*
* @returns {void} Draw the Rectangle for the diagram .\
*
* @param { SVGElement} canvas - Provide the SVG .
* @param { RectAttributes} options - Provide the Rect attributes .
* @param { string} diagramId - Provide the diagram id .
* @param { boolean} isExport - Provide the isExport .
* @param { boolean} isSelector - Provide the selector possobilities .
* @param { SVGSVGElement} parentSvg - Provide the parent svg element .
* @param { Object} ariaLabel - Provide the Arial label attributes .
* @param { boolean} isCircularHandle - Provide the boolean attribute for the circular handle .
* @param { number} enableSelector - Provide the selector possobilities .
* @param { any } renderer - Provide the renderer value .
* @param { any } element - Provide the element value .
* @private
*/
drawRectangle(canvas: HTMLCanvasElement, options: RectAttributes, diagramId: string, isExport: boolean, isSelector?: boolean, parentSvg?: SVGSVGElement, ariaLabel?: Object, isCircularHandle?: boolean, enableSelector?: number, renderer?: any, element?: any): void;
/**
* Draw the path element for the diagram\
*
* @returns {void} Draw the path element for the diagram .\
*
* @param { SVGElement} canvas - Provide the SVG element .
* @param { PathAttributes} options - Provide the path element attributes .
* @param {string} diagramId - Provide the diagram id .
* @param {boolean} isSelector - Provide selector boolean value .
* @param {SVGSVGElement} parentSvg - Provide the parent SVG element .
* @param {Object} ariaLabel - Provide arial label value .
* @param {number} scale - Provide the scale value .
* @param {any} renderer - Provide the renderer value .
* @param {PathElement} element - Provide the path element value .
* @private
*/
drawPath(canvas: HTMLCanvasElement, options: PathAttributes, diagramId?: string, isSelector?: boolean, parentSvg?: SVGSVGElement, ariaLabel?: Object, scale?: number, renderer?: any, element?: PathElement): void;
/**
* Draw the path element for the diagram\
*
* @returns {void} Draw the path element for the diagram .\
*
* @param { SVGElement} canvas - Provide the SVG element .
* @param {PathAttributes} options - Provide the path element attributes .
* @param {Object[]} collection - Provide the parent SVG element .
* @private
*/
renderPath(canvas: HTMLCanvasElement, options: PathAttributes, collection: Object[]): void;
/**
* Draw the text element for the diagram\
*
* @returns {void} Draw the text element for the diagram .\
*
* @param { SVGElement} canvas - Provide the SVG element .
* @param {TextAttributes} options - Provide the text element attributes .
* @param {SVGSVGElement} parentSvg - Provide the parent SVG element .
* @param {Object} ariaLabel - Provide the label properties .
* @param {string} diagramId - Provide the diagram id .
* @param {number} scaleValue - Provide the scale value .
* @param {any} renderer - Provide the renderer value .
* @param {element} element - Provide the text element value.
* @private
*/
drawText(canvas: HTMLCanvasElement, options: TextAttributes, parentSvg?: SVGSVGElement, ariaLabel?: Object, diagramId?: string, scaleValue?: number, renderer?: any, element?: TextElement): void;
private applyFlipAndRotate;
private loadImage;
/**
* Draw the image element for the diagram\
*
* @returns {void} Draw the image element for the diagram .
* @param { SVGElement | HTMLCanvasElement} canvas - Provide the SVG element .
* @param {ImageAttributes} obj - Provide the image attributes .
* @param {SVGSVGElement} parentSvg - Provide the parent SVG element .
* @param {boolean} fromPalette - Provide the pointer event value .
* @param {any} renderer - provide renderer value
* @param {ImageElement} element - provide image element
* @private
*/
drawImage(canvas: HTMLCanvasElement, obj: ImageAttributes, parentSvg?: SVGSVGElement, fromPalette?: boolean, renderer?: any, element?: ImageElement): void;
private image;
private getSliceOffset;
private getMeetOffset;
private m;
private r;
private a;
/**
* Draw the SVG label.\
*
* @returns {PointModel} Draw the SVG label .
* @param {TextAttributes} text - Provide the canvas element .
* @param {Object} wrapBounds - Provide the canvas element .
* @param {SubTextElement []} childNodes - Provide the canvas element .
* @private
*/
labelAlign(text: TextAttributes, wrapBounds: TextBounds, childNodes: SubTextElement[]): PointModel;
}