UNPKG

visjs-network

Version:

A dynamic, browser-based network visualization library.

78 lines (68 loc) 1.85 kB
'use strict' import NodeBase from '../util/NodeBase' /** * A text-based replacement for the default Node shape. * * @extends NodeBase */ class Text extends NodeBase { /** * @param {Object} options * @param {Object} body * @param {Label} labelModule */ constructor(options, body, labelModule) { super(options, body, labelModule) this._setMargins(labelModule) } /** * * @param {CanvasRenderingContext2D} ctx * @param {boolean} selected * @param {boolean} hover */ resize(ctx, selected, hover) { if (this.needsRefresh(selected, hover)) { this.textSize = this.labelModule.getTextSize(ctx, selected, hover) this.width = this.textSize.width + this.margin.right + this.margin.left this.height = this.textSize.height + this.margin.top + this.margin.bottom this.radius = 0.5 * this.width } } /** * * @param {CanvasRenderingContext2D} ctx * @param {number} x width * @param {number} y height * @param {boolean} selected * @param {boolean} hover * @param {ArrowOptions} values */ draw(ctx, x, y, selected, hover, values) { this.resize(ctx, selected, hover) this.left = x - this.width / 2 this.top = y - this.height / 2 // draw shadow if enabled this.enableShadow(ctx, values) this.labelModule.draw( ctx, this.left + this.textSize.width / 2 + this.margin.left, this.top + this.textSize.height / 2 + this.margin.top, selected, hover ) // disable shadows for other elements. this.disableShadow(ctx, values) this.updateBoundingBox(x, y, ctx, selected, hover) } /** * * @param {CanvasRenderingContext2D} ctx * @param {number} angle * @returns {number} */ distanceToBorder(ctx, angle) { return this._distanceToBorder(ctx, angle) } } export default Text