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112 lines
4.1 KiB
112 lines
4.1 KiB
'use strict';
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import CircleImageBase from '../util/CircleImageBase'
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/**
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* A CircularImage Node/Cluster shape.
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*
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* @extends CircleImageBase
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*/
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class CircularImage extends CircleImageBase {
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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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* @param {Image} imageObj
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* @param {Image} imageObjAlt
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*/
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constructor (options, body, labelModule, imageObj, imageObjAlt) {
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super(options, body, labelModule);
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this.setImages(imageObj, imageObjAlt);
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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 = this.selected, hover = this.hover) {
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var imageAbsent = (this.imageObj.src === undefined) ||
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(this.imageObj.width === undefined) ||
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(this.imageObj.height === undefined);
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if (imageAbsent) {
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var diameter = this.options.size * 2;
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this.width = diameter;
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this.height = diameter;
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this.radius = 0.5*this.width;
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return;
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}
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// At this point, an image is present, i.e. this.imageObj is valid.
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if (this.needsRefresh(selected, hover)) {
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this._resizeImage();
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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.switchImages(selected);
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this.resize();
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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 the background circle. IMPORTANT: the stroke in this method is used by the clip method below.
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this._drawRawCircle(ctx, x, y, values);
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// now we draw in the circle, we save so we can revert the clip operation after drawing.
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ctx.save();
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// clip is used to use the stroke in drawRawCircle as an area that we can draw in.
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ctx.clip();
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// draw the image
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this._drawImageAtPosition(ctx, values);
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// restore so we can again draw on the full canvas
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ctx.restore();
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this._drawImageLabel(ctx, x, y, selected, hover);
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this.updateBoundingBox(x,y);
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}
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// TODO: compare with Circle.updateBoundingBox(), consolidate? More stuff is happening here
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/**
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*
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* @param {number} x width
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* @param {number} y height
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*/
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updateBoundingBox(x,y) {
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this.boundingBox.top = y - this.options.size;
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this.boundingBox.left = x - this.options.size;
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this.boundingBox.right = x + this.options.size;
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this.boundingBox.bottom = y + this.options.size;
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// TODO: compare with Image.updateBoundingBox(), consolidate?
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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.labelOffset);
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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 - Unused
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* @returns {number}
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*/
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distanceToBorder(ctx, angle) { // eslint-disable-line no-unused-vars
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this.resize(ctx);
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return this.width * 0.5;
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}
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}
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export default CircularImage;
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