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74 lines
2.8 KiB
74 lines
2.8 KiB
'use strict';
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import NodeBase from '../util/NodeBase'
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/**
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* A text-based replacement for the default Node shape.
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*
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* @class Text
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* @extends NodeBase
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*/
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class Text extends NodeBase {
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/**
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* @param {Object} options
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* @param {Object} body
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* @param {Label} labelModule
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* @constructor Text
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*/
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constructor(options, body, labelModule) {
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super(options, body, labelModule);
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this._setMargins(labelModule);
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}
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/**
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*
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* @param {CanvasRenderingContext2D} ctx
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* @param {boolean} selected
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* @param {boolean} hover
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*/
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resize(ctx, selected, hover) {
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if (this.needsRefresh(selected, hover)) {
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this.textSize = this.labelModule.getTextSize(ctx, selected, hover);
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this.width = this.textSize.width + this.margin.right + this.margin.left;
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this.height = this.textSize.height + this.margin.top + this.margin.bottom;
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this.radius = 0.5*this.width;
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}
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}
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/**
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*
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* @param {CanvasRenderingContext2D} ctx
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* @param {number} x width
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* @param {number} y height
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* @param {boolean} selected
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* @param {boolean} hover
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* @param {{toArrow: boolean, toArrowScale: (allOptions.edges.arrows.to.scaleFactor|{number}|allOptions.edges.arrows.middle.scaleFactor|allOptions.edges.arrows.from.scaleFactor|Array|number), toArrowType: *, middleArrow: boolean, middleArrowScale: (number|allOptions.edges.arrows.middle.scaleFactor|{number}|Array), middleArrowType: (allOptions.edges.arrows.middle.type|{string}|string|*), fromArrow: boolean, fromArrowScale: (allOptions.edges.arrows.to.scaleFactor|{number}|allOptions.edges.arrows.middle.scaleFactor|allOptions.edges.arrows.from.scaleFactor|Array|number), fromArrowType: *, arrowStrikethrough: (*|boolean|allOptions.edges.arrowStrikethrough|{boolean}), color: undefined, inheritsColor: (string|string|string|allOptions.edges.color.inherit|{string, boolean}|Array|*), opacity: *, hidden: *, length: *, shadow: *, shadowColor: *, shadowSize: *, shadowX: *, shadowY: *, dashes: (*|boolean|Array|allOptions.edges.dashes|{boolean, array}), width: *}} values
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*/
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draw(ctx, x, y, selected, hover, values) {
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this.resize(ctx, selected, hover);
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this.left = x - this.width / 2;
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this.top = y - this.height / 2;
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// draw shadow if enabled
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this.enableShadow(ctx, values);
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this.labelModule.draw(ctx, this.left + this.textSize.width / 2 + this.margin.left,
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this.top + this.textSize.height / 2 + this.margin.top, selected, hover);
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// disable shadows for other elements.
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this.disableShadow(ctx, values);
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this.updateBoundingBox(x, y, ctx, selected, hover);
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}
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/**
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*
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* @param {CanvasRenderingContext2D} ctx
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* @param {Number} angle
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* @returns {Number}
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*/
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distanceToBorder(ctx, angle) {
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return this._distanceToBorder(ctx,angle);
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}
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}
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export default Text;
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