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125 lines
4.4 KiB
125 lines
4.4 KiB
'use strict';
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import CircleImageBase from '../util/CircleImageBase'
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/**
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* An image-based replacement for the default Node shape.
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*
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* @class Image
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* @extends CircleImageBase
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*/
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class Image 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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* @constructor Image
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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 - 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 = 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 side = this.options.size * 2;
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this.width = side;
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this.height = side;
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return;
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}
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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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if (this.options.shapeProperties.useBorderWithImage === true) {
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var neutralborderWidth = this.options.borderWidth;
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var selectionLineWidth = this.options.borderWidthSelected || 2 * this.options.borderWidth;
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var borderWidth = (selected ? selectionLineWidth : neutralborderWidth) / this.body.view.scale;
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ctx.lineWidth = Math.min(this.width, borderWidth);
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ctx.beginPath();
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// setup the line properties.
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ctx.strokeStyle = selected ? this.options.color.highlight.border : hover ? this.options.color.hover.border : this.options.color.border;
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// set a fillstyle
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ctx.fillStyle = selected ? this.options.color.highlight.background : hover ? this.options.color.hover.background : this.options.color.background;
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// draw a rectangle to form the border around. This rectangle is filled so the opacity of a picture (in future vis releases?) can be used to tint the image
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ctx.rect(this.left - 0.5 * ctx.lineWidth,
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this.top - 0.5 * ctx.lineWidth,
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this.width + ctx.lineWidth,
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this.height + ctx.lineWidth);
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ctx.fill();
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this.performStroke(ctx, values);
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ctx.closePath();
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}
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this._drawImageAtPosition(ctx, values);
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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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/**
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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.resize();
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this._updateBoundingBox(x, y);
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if (this.options.label !== undefined && this.labelModule.size.width > 0) {
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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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*
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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 Image;
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