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376 lines
11 KiB
376 lines
11 KiB
var util = require('../../../util');
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import Label from './unified/label'
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import Box from './nodes/shapes/box'
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import Circle from './nodes/shapes/circle'
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import CircularImage from './nodes/shapes/circularImage'
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import Database from './nodes/shapes/database'
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import Dot from './nodes/shapes/dot'
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import Ellipse from './nodes/shapes/ellipse'
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import Icon from './nodes/shapes/icon'
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import Image from './nodes/shapes/image'
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import Square from './nodes/shapes/square'
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import Star from './nodes/shapes/star'
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import Text from './nodes/shapes/text'
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import Triangle from './nodes/shapes/triangle'
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import TriangleDown from './nodes/shapes/triangleDown'
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/**
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* @class Node
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* A node. A node can be connected to other nodes via one or multiple edges.
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* @param {object} options An object containing options for the node. All
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* options are optional, except for the id.
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* {number} id Id of the node. Required
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* {string} label Text label for the node
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* {number} x Horizontal position of the node
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* {number} y Vertical position of the node
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* {string} shape Node shape, available:
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* "database", "circle", "ellipse",
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* "box", "image", "text", "dot",
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* "star", "triangle", "triangleDown",
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* "square", "icon"
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* {string} image An image url
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* {string} title An title text, can be HTML
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* {anytype} group A group name or number
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* @param {Network.Images} imagelist A list with images. Only needed
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* when the node has an image
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* @param {Network.Groups} grouplist A list with groups. Needed for
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* retrieving group options
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* @param {Object} constants An object with default values for
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* example for the color
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*
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*/
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class Node {
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constructor(options, body, imagelist, grouplist, globalOptions) {
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this.options = util.bridgeObject(globalOptions);
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this.body = body;
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this.edges = []; // all edges connected to this node
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// set defaults for the options
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this.id = undefined;
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this.boundingBox = {top: 0, left: 0, right: 0, bottom: 0};
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this.imagelist = imagelist;
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this.grouplist = grouplist;
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// state options
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this.x = null;
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this.y = null;
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this.predefinedPosition = false; // used to check if initial zoomExtent should just take the range or approximate
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this.selected = false;
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this.hover = false;
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this.labelModule = new Label(this.body, this.options);
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this.setOptions(options);
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}
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/**
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* Attach a edge to the node
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* @param {Edge} edge
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*/
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attachEdge(edge) {
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if (this.edges.indexOf(edge) == -1) {
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this.edges.push(edge);
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}
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}
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/**
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* Detach a edge from the node
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* @param {Edge} edge
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*/
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detachEdge(edge) {
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var index = this.edges.indexOf(edge);
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if (index != -1) {
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this.edges.splice(index, 1);
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}
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}
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/**
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* Enable or disable the physics.
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* @param status
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*/
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togglePhysics(status) {
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this.options.physics = status;
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}
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/**
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* Set or overwrite options for the node
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* @param {Object} options an object with options
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* @param {Object} constants and object with default, global options
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*/
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setOptions(options) {
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if (!options) {
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return;
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}
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var fields = [
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'borderWidth',
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'borderWidthSelected',
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'brokenImage',
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'customScalingFunction',
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'font',
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'hidden',
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'icon',
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'id',
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'image',
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'label',
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'physics',
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'shape',
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'size',
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'value'
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];
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util.selectiveDeepExtend(fields, this.options, options);
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// basic options
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if (options.id !== undefined) {
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this.id = options.id;
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}
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if (options.x !== undefined) {
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this.x = options.x;
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this.predefinedPosition = true;
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}
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if (options.y !== undefined) {
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this.y = options.y;
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this.predefinedPosition = true;
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}
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if (options.value !== undefined) {
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this.value = options.value;
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}
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if (options.level !== undefined) {
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this.level = options.level;
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this.preassignedLevel = true;
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}
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if (this.id === undefined) {
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throw "Node must have an id";
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}
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// copy group options
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if (typeof options.group === 'number' || (typeof options.group === 'string' && options.group != '')) {
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var groupObj = this.grouplist.get(options.group);
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util.deepExtend(this.options, groupObj);
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// the color object needs to be completely defined. Since groups can partially overwrite the colors, we parse it again, just in case.
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this.options.color = util.parseColor(this.options.color);
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}
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// individual shape options
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if (options.color !== undefined) {
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this.options.color = util.parseColor(options.color);
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}
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if (this.options.image !== undefined && this.options.image != "") {
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if (this.imagelist) {
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this.imageObj = this.imagelist.load(this.options.image, this.options.brokenImage);
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}
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else {
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throw "No imagelist provided";
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}
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}
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if (options.fixed !== undefined) {
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if (typeof options.fixed == 'boolean') {
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this.options.fixed.x = true;
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this.options.fixed.y = true;
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}
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else {
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if (options.fixed.x !== undefined && typeof options.fixed.x == 'boolean') {
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this.options.fixed.x = options.fixed.x;
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}
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if (options.fixed.y !== undefined && typeof options.fixed.y == 'boolean') {
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this.options.fixed.y = options.fixed.y;
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}
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}
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}
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// choose draw method depending on the shape
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switch (this.options.shape) {
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case 'database':
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this.shape = new Database(this.options, this.body, this.labelModule);
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break;
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case 'box':
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this.shape = new Box(this.options, this.body, this.labelModule);
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break;
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case 'circle':
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this.shape = new Circle(this.options, this.body, this.labelModule);
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break;
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case 'ellipse':
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this.shape = new Ellipse(this.options, this.body, this.labelModule);
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break;
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// TODO: add diamond shape
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case 'image':
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this.shape = new Image(this.options, this.body, this.labelModule, this.imageObj);
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break;
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case 'circularImage':
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this.shape = new CircularImage(this.options, this.body, this.labelModule, this.imageObj);
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break;
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case 'text':
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this.shape = new Text(this.options, this.body, this.labelModule);
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break;
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case 'dot':
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this.shape = new Dot(this.options, this.body, this.labelModule);
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break;
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case 'square':
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this.shape = new Square(this.options, this.body, this.labelModule);
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break;
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case 'triangle':
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this.shape = new Triangle(this.options, this.body, this.labelModule);
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break;
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case 'triangleDown':
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this.shape = new TriangleDown(this.options, this.body, this.labelModule);
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break;
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case 'star':
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this.shape = new Star(this.options, this.body, this.labelModule);
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break;
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case 'icon':
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this.shape = new Icon(this.options, this.body, this.labelModule);
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break;
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default:
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this.shape = new Ellipse(this.options, this.body, this.labelModule);
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break;
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}
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this.labelModule.setOptions(this.options, options);
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// reset the size of the node, this can be changed
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this._reset();
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}
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/**
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* select this node
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*/
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select() {
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this.selected = true;
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this._reset();
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}
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/**
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* unselect this node
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*/
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unselect() {
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this.selected = false;
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this._reset();
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}
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/**
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* Reset the calculated size of the node, forces it to recalculate its size
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* @private
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*/
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_reset() {
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this.shape.width = undefined;
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this.shape.height = undefined;
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}
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/**
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* get the title of this node.
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* @return {string} title The title of the node, or undefined when no title
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* has been set.
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*/
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getTitle() {
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return typeof this.title === "function" ? this.title() : this.title;
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}
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/**
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* Calculate the distance to the border of the Node
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* @param {CanvasRenderingContext2D} ctx
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* @param {Number} angle Angle in radians
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* @returns {number} distance Distance to the border in pixels
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*/
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distanceToBorder(ctx, angle) {
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return this.shape.distanceToBorder(ctx,angle);
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}
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/**
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* Check if this node has a fixed x and y position
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* @return {boolean} true if fixed, false if not
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*/
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isFixed() {
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return (this.options.fixed.x && this.options.fixed.y);
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}
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/**
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* check if this node is selecte
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* @return {boolean} selected True if node is selected, else false
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*/
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isSelected() {
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return this.selected;
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}
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/**
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* Retrieve the value of the node. Can be undefined
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* @return {Number} value
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*/
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getValue() {
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return this.value;
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}
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/**
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* Adjust the value range of the node. The node will adjust it's size
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* based on its value.
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* @param {Number} min
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* @param {Number} max
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*/
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setValueRange(min, max, total) {
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if (this.value !== undefined) {
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var scale = this.options.scaling.customScalingFunction(min, max, total, this.value);
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var sizeDiff = this.options.scaling.max - this.options.scaling.min;
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if (this.options.scaling.label.enabled == true) {
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var fontDiff = this.options.scaling.label.max - this.options.scaling.label.min;
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this.options.font.size = this.options.scaling.label.min + scale * fontDiff;
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}
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this.options.size = this.options.scaling.min + scale * sizeDiff;
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}
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}
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/**
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* Draw this node in the given canvas
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* The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
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* @param {CanvasRenderingContext2D} ctx
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*/
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draw(ctx) {
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this.shape.draw(ctx, this.x, this.y, this.selected, this.hover);
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}
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/**
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* Recalculate the size of this node in the given canvas
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* The 2d context of a HTML canvas can be retrieved by canvas.getContext("2d");
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* @param {CanvasRenderingContext2D} ctx
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*/
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resize(ctx) {
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this.shape.resize(ctx);
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}
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/**
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* Check if this object is overlapping with the provided object
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* @param {Object} obj an object with parameters left, top, right, bottom
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* @return {boolean} True if location is located on node
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*/
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isOverlappingWith(obj) {
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return (
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this.shape.left < obj.right &&
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this.shape.left + this.shape.width > obj.left &&
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this.shape.top < obj.bottom &&
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this.shape.top + this.shape.height > obj.top
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);
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}
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}
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export default Node;
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