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127 lines
5.5 KiB
127 lines
5.5 KiB
'use strict';
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import NodeBase from '../util/NodeBase'
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/**
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* An icon replacement for the default Node shape.
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*
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* @extends NodeBase
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*/
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class Icon 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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*/
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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 - Unused.
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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.iconSize = {
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width: Number(this.options.icon.size),
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height: Number(this.options.icon.size)
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};
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this.width = this.iconSize.width + this.margin.right + this.margin.left;
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this.height = this.iconSize.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.options.icon.size = this.options.icon.size || 50;
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this.left = x - this.width / 2;
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this.top = y - this.height / 2;
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this._icon(ctx, x, y, selected, hover, values);
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if (this.options.label !== undefined) {
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var iconTextSpacing = 5;
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this.labelModule.draw(ctx, this.left + this.iconSize.width / 2 + this.margin.left,
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y + this.height / 2 + iconTextSpacing, selected);
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}
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this.updateBoundingBox(x, y)
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}
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/**
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*
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* @param {number} x
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* @param {number} y
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*/
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updateBoundingBox(x, y) {
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this.boundingBox.top = y - this.options.icon.size * 0.5;
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this.boundingBox.left = x - this.options.icon.size * 0.5;
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this.boundingBox.right = x + this.options.icon.size * 0.5;
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this.boundingBox.bottom = y + this.options.icon.size * 0.5;
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if (this.options.label !== undefined && this.labelModule.size.width > 0) {
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var iconTextSpacing = 5;
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this.boundingBox.left = Math.min(this.boundingBox.left, this.labelModule.size.left);
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this.boundingBox.right = Math.max(this.boundingBox.right, this.labelModule.size.left + this.labelModule.size.width);
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this.boundingBox.bottom = Math.max(this.boundingBox.bottom, this.boundingBox.bottom + this.labelModule.size.height + iconTextSpacing);
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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 - Unused
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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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_icon(ctx, x, y, selected, hover, values) {
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let iconSize = Number(this.options.icon.size);
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if (this.options.icon.code !== undefined) {
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ctx.font = (selected ? "bold " : "") + iconSize + "px " + this.options.icon.face;
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// draw icon
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ctx.fillStyle = this.options.icon.color || "black";
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ctx.textAlign = "center";
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ctx.textBaseline = "middle";
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// draw shadow if enabled
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this.enableShadow(ctx, values);
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ctx.fillText(this.options.icon.code, x, y);
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// disable shadows for other elements.
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this.disableShadow(ctx, values);
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} else {
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console.error('When using the icon shape, you need to define the code in the icon options object. This can be done per node or globally.')
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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} 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 Icon;
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