var util = require('../../../util'); import Label from './shared/Label' import Box from './nodes/shapes/Box' import Circle from './nodes/shapes/Circle' import CircularImage from './nodes/shapes/CircularImage' import Database from './nodes/shapes/Database' import Diamond from './nodes/shapes/Diamond' import Dot from './nodes/shapes/Dot' import Ellipse from './nodes/shapes/Ellipse' import Icon from './nodes/shapes/Icon' import Image from './nodes/shapes/Image' import Square from './nodes/shapes/Square' import Star from './nodes/shapes/Star' import Text from './nodes/shapes/Text' import Triangle from './nodes/shapes/Triangle' import TriangleDown from './nodes/shapes/TriangleDown' import Validator from "../../../shared/Validator"; import {printStyle} from "../../../shared/Validator"; /** * @class Node * A node. A node can be connected to other nodes via one or multiple edges. * @param {object} options An object containing options for the node. All * options are optional, except for the id. * {number} id Id of the node. Required * {string} label Text label for the node * {number} x Horizontal position of the node * {number} y Vertical position of the node * {string} shape Node shape, available: * "database", "circle", "ellipse", * "box", "image", "text", "dot", * "star", "triangle", "triangleDown", * "square", "icon" * {string} image An image url * {string} title An title text, can be HTML * {anytype} group A group name or number * @param {Network.Images} imagelist A list with images. Only needed * when the node has an image * @param {Network.Groups} grouplist A list with groups. Needed for * retrieving group options * @param {Object} constants An object with default values for * example for the color * */ class Node { constructor(options, body, imagelist, grouplist, globalOptions) { this.options = util.bridgeObject(globalOptions); this.body = body; this.edges = []; // all edges connected to this node // set defaults for the options this.id = undefined; this.imagelist = imagelist; this.grouplist = grouplist; // state options this.x = undefined; this.y = undefined; this.baseSize = this.options.size; this.baseFontSize = this.options.font.size; this.predefinedPosition = false; // used to check if initial fit should just take the range or approximate this.selected = false; this.hover = false; this.labelModule = new Label(this.body, this.options); this.setOptions(options); } /** * Attach a edge to the node * @param {Edge} edge */ attachEdge(edge) { if (this.edges.indexOf(edge) === -1) { this.edges.push(edge); } } /** * Detach a edge from the node * @param {Edge} edge */ detachEdge(edge) { var index = this.edges.indexOf(edge); if (index != -1) { this.edges.splice(index, 1); } } /** * Set or overwrite options for the node * @param {Object} options an object with options * @param {Object} constants and object with default, global options */ setOptions(options) { let currentShape = this.options.shape; if (!options) { return; } // basic options if (options.id !== undefined) {this.id = options.id;} if (this.id === undefined) { throw "Node must have an id"; } // set these options locally // clear x and y positions if (options.x !== undefined) { if (options.x === null) {this.x = undefined; this.predefinedPosition = false;} else {this.x = parseInt(options.x); this.predefinedPosition = true;} } if (options.y !== undefined) { if (options.y === null) {this.y = undefined; this.predefinedPosition = false;} else {this.y = parseInt(options.y); this.predefinedPosition = true;} } if (options.size !== undefined) {this.baseSize = options.size;} if (options.value !== undefined) {options.value = parseFloat(options.value);} // copy group options if (typeof options.group === 'number' || (typeof options.group === 'string' && options.group != '')) { var groupObj = this.grouplist.get(options.group); util.deepExtend(this.options, groupObj); // the color object needs to be completely defined. Since groups can partially overwrite the colors, we parse it again, just in case. this.options.color = util.parseColor(this.options.color); } // this transforms all shorthands into fully defined options Node.parseOptions(this.options, options, true); // load the images if (this.options.image !== undefined) { if (this.imagelist) { this.imageObj = this.imagelist.load(this.options.image, this.options.brokenImage, this.id); } else { throw "No imagelist provided"; } } this.updateLabelModule(); this.updateShape(currentShape); if (options.hidden !== undefined || options.physics !== undefined) { return true; } return false; } /** * This process all possible shorthands in the new options and makes sure that the parentOptions are fully defined. * Static so it can also be used by the handler. * @param parentOptions * @param newOptions */ static parseOptions(parentOptions, newOptions, allowDeletion = false) { var fields = [ 'color', 'font', 'fixed', 'shadow' ]; util.selectiveNotDeepExtend(fields, parentOptions, newOptions, allowDeletion); // merge the shadow options into the parent. util.mergeOptions(parentOptions, newOptions, 'shadow'); // individual shape newOptions if (newOptions.color !== undefined && newOptions.color !== null) { let parsedColor = util.parseColor(newOptions.color); util.fillIfDefined(parentOptions.color, parsedColor); } else if (allowDeletion === true && newOptions.color === null) { parentOptions.color = undefined; delete parentOptions.color; } // handle the fixed options if (newOptions.fixed !== undefined && newOptions.fixed !== null) { if (typeof newOptions.fixed === 'boolean') { parentOptions.fixed.x = newOptions.fixed; parentOptions.fixed.y = newOptions.fixed; } else { if (newOptions.fixed.x !== undefined && typeof newOptions.fixed.x === 'boolean') { parentOptions.fixed.x = newOptions.fixed.x; } if (newOptions.fixed.y !== undefined && typeof newOptions.fixed.y === 'boolean') { parentOptions.fixed.y = newOptions.fixed.y; } } } // handle the font options if (newOptions.font !== undefined) { Label.parseOptions(parentOptions.font, newOptions); } // handle the scaling options, specifically the label part if (newOptions.scaling !== undefined) { util.mergeOptions(parentOptions.scaling, newOptions.scaling, 'label'); } } updateLabelModule() { if (this.options.label === undefined || this.options.label === null) { this.options.label = ''; } this.labelModule.setOptions(this.options, true); if (this.labelModule.baseSize !== undefined) { this.baseFontSize = this.labelModule.baseSize; } } updateShape(currentShape) { if (currentShape === this.options.shape && this.shape) { this.shape.setOptions(this.options, this.imageObj); } else { // choose draw method depending on the shape switch (this.options.shape) { case 'box': this.shape = new Box(this.options, this.body, this.labelModule); break; case 'circle': this.shape = new Circle(this.options, this.body, this.labelModule); break; case 'circularImage': this.shape = new CircularImage(this.options, this.body, this.labelModule, this.imageObj); break; case 'database': this.shape = new Database(this.options, this.body, this.labelModule); break; case 'diamond': this.shape = new Diamond(this.options, this.body, this.labelModule); break; case 'dot': this.shape = new Dot(this.options, this.body, this.labelModule); break; case 'ellipse': this.shape = new Ellipse(this.options, this.body, this.labelModule); break; case 'icon': this.shape = new Icon(this.options, this.body, this.labelModule); break; case 'image': this.shape = new Image(this.options, this.body, this.labelModule, this.imageObj); break; case 'square': this.shape = new Square(this.options, this.body, this.labelModule); break; case 'star': this.shape = new Star(this.options, this.body, this.labelModule); break; case 'text': this.shape = new Text(this.options, this.body, this.labelModule); break; case 'triangle': this.shape = new Triangle(this.options, this.body, this.labelModule); break; case 'triangleDown': this.shape = new TriangleDown(this.options, this.body, this.labelModule); break; default: this.shape = new Ellipse(this.options, this.body, this.labelModule); break; } } this._reset(); } /** * select this node */ select() { this.selected = true; this._reset(); } /** * unselect this node */ unselect() { this.selected = false; this._reset(); } /** * Reset the calculated size of the node, forces it to recalculate its size * @private */ _reset() { this.shape.width = undefined; this.shape.height = undefined; } /** * get the title of this node. * @return {string} title The title of the node, or undefined when no title * has been set. */ getTitle() { return this.options.title; } /** * Calculate the distance to the border of the Node * @param {CanvasRenderingContext2D} ctx * @param {Number} angle Angle in radians * @returns {number} distance Distance to the border in pixels */ distanceToBorder(ctx, angle) { return this.shape.distanceToBorder(ctx,angle); } /** * Check if this node has a fixed x and y position * @return {boolean} true if fixed, false if not */ isFixed() { return (this.options.fixed.x && this.options.fixed.y); } /** * check if this node is selecte * @return {boolean} selected True if node is selected, else false */ isSelected() { return this.selected; } /** * Retrieve the value of the node. Can be undefined * @return {Number} value */ getValue() { return this.options.value; } /** * Adjust the value range of the node. The node will adjust it's size * based on its value. * @param {Number} min * @param {Number} max */ setValueRange(min, max, total) { if (this.options.value !== undefined) { var scale = this.options.scaling.customScalingFunction(min, max, total, this.options.value); var sizeDiff = this.options.scaling.max - this.options.scaling.min; if (this.options.scaling.label.enabled === true) { var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min; this.options.font.size = this.options.scaling.label.min + scale * fontDiff; } this.options.size = this.options.scaling.min + scale * sizeDiff; } else { this.options.size = this.baseSize; this.options.font.size = this.baseFontSize; } } /** * Draw this node in the given canvas * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); * @param {CanvasRenderingContext2D} ctx */ draw(ctx) { this.shape.draw(ctx, this.x, this.y, this.selected, this.hover); } /** * Update the bounding box of the shape */ updateBoundingBox(ctx) { this.shape.updateBoundingBox(this.x,this.y,ctx); } /** * Recalculate the size of this node in the given canvas * The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d"); * @param {CanvasRenderingContext2D} ctx */ resize(ctx) { this.shape.resize(ctx, this.selected); } /** * Check if this object is overlapping with the provided object * @param {Object} obj an object with parameters left, top, right, bottom * @return {boolean} True if location is located on node */ isOverlappingWith(obj) { return ( this.shape.left < obj.right && this.shape.left + this.shape.width > obj.left && this.shape.top < obj.bottom && this.shape.top + this.shape.height > obj.top ); } /** * Check if this object is overlapping with the provided object * @param {Object} obj an object with parameters left, top, right, bottom * @return {boolean} True if location is located on node */ isBoundingBoxOverlappingWith(obj) { return ( this.shape.boundingBox.left < obj.right && this.shape.boundingBox.right > obj.left && this.shape.boundingBox.top < obj.bottom && this.shape.boundingBox.bottom > obj.top ); } } export default Node;