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v1.0.0-beta 源码正式开源
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小莫唐尼
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import Style from './style.class'
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import transition from '../transition'
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import {
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deepClone,
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getRotatePointPos,
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getScalePointPos,
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getTranslatePointPos,
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checkPointIsInRect
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} from '../plugin/util'
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/**
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* @description Class Graph
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* @param {Object} graph Graph default configuration
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* @param {Object} config Graph config
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* @return {Graph} Instance of Graph
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*/
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export default class Graph {
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constructor (graph, config) {
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config = deepClone(config, true)
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config = {animationFrame:24,...config};
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const defaultConfig = {
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/**
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* @description Weather to render graph
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* @type {Boolean}
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* @default visible = true
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*/
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visible: true,
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/**
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* @description Whether to enable drag
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* @type {Boolean}
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* @default drag = false
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*/
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drag: false,
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/**
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* @description Whether to enable hover
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* @type {Boolean}
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* @default hover = false
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*/
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hover: false,
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/**
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* @description Graph rendering index
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* Give priority to index high graph in rendering
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* @type {Number}
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* @example index = 1
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*/
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index: 1,
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/**
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* @description Animation delay time(ms)
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* @type {Number}
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* @default animationDelay = 0
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*/
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animationDelay: 0,
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/**
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* @description Number of animation frames
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* @type {Number}
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* @default animationFrame = 30
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*/
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animationFrame: 30,
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/**
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* @description Animation dynamic curve (Supported by transition)
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* @type {String}
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* @default animationCurve = 'linear'
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* @link https://github.com/jiaming743/Transition
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*/
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animationCurve: 'linear',
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/**
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* @description Weather to pause graph animation
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* @type {Boolean}
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* @default animationPause = false
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*/
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animationPause: false,
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/**
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* @description Rectangular hover detection zone
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* Use this method for hover detection first
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* @type {Null|Array}
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* @default hoverRect = null
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* @example hoverRect = [0, 0, 100, 100] // [Rect start x, y, Rect width, height]
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*/
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hoverRect: null,
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/**
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* @description Mouse enter event handler
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* @type {Function|Null}
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* @default mouseEnter = null
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*/
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mouseEnter: null,
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/**
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* @description Mouse outer event handler
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* @type {Function|Null}
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* @default mouseOuter = null
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*/
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mouseOuter: null,
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/**
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* @description Mouse click event handler
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* @type {Function|Null}
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* @default click = null
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*/
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click: null
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}
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const configAbleNot = {
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status: 'static',
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animationRoot: [],
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animationKeys: [],
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animationFrameState: [],
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cache: {}
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}
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if (!config.shape) config.shape = {}
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if (!config.style) config.style = {}
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const shape = Object.assign({}, graph.shape, config.shape)
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Object.assign(defaultConfig, config, configAbleNot)
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Object.assign(this, graph, defaultConfig)
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this.shape = shape
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this.style = new Style(config.style)
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this.addedProcessor()
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}
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}
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/**
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* @description Processor of added
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* @return {Undefined} Void
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*/
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Graph.prototype.addedProcessor = function () {
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if (typeof this.setGraphCenter === 'function') this.setGraphCenter(null, this)
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// The life cycle 'added"
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if (typeof this.added === 'function') this.added(this)
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}
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/**
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* @description Processor of draw
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* @param {CRender} render Instance of CRender
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* @param {Graph} graph Instance of Graph
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* @return {Undefined} Void
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*/
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Graph.prototype.drawProcessor = function (render, graph) {
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const { ctx } = render
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const { shape } = graph
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graph.style.initStyle(ctx,shape)
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if (typeof this.beforeDraw === 'function') this.beforeDraw(this, render)
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graph.draw(render, graph)
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// ctx.draw(true)
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if (typeof this.drawed === 'function') this.drawed(this, render)
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graph.style.restoreTransform(ctx)
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}
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/**
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* @description Processor of hover check
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* @param {Array} position Mouse Position
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* @param {Graph} graph Instance of Graph
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* @return {Boolean} Result of hover check
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*/
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Graph.prototype.hoverCheckProcessor = function (position, { hoverRect, style, hoverCheck }) {
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const { graphCenter, rotate, scale, translate } = style
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if (graphCenter) {
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if (rotate) position = getRotatePointPos(-rotate, position, graphCenter)
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if (scale) position = getScalePointPos(scale.map(s => 1 / s), position, graphCenter)
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if (translate) position = getTranslatePointPos(translate.map(v => v * -1), position)
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}
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if (hoverRect) return checkPointIsInRect(position, ...hoverRect)
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return hoverCheck(position, this)
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}
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/**
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* @description Processor of move
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* @param {Event} e Mouse movement event
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* @return {Undefined} Void
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*/
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Graph.prototype.moveProcessor = function (e) {
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this.move(e, this)
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if (typeof this.beforeMove === 'function') this.beforeMove(e, this)
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if (typeof this.setGraphCenter === 'function') this.setGraphCenter(e, this)
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if (typeof this.moved === 'function') this.moved(e, this)
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}
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/**
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* @description Update graph state
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* @param {String} attrName Updated attribute name
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* @param {Any} change Updated value
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* @return {Undefined} Void
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*/
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Graph.prototype.attr = function (attrName, change = undefined) {
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if (!attrName || change === undefined) return false
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const isObject = typeof this[attrName] === 'object'
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if (isObject) change = deepClone(change, true)
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const { render } = this
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if (attrName === 'style') {
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this.style.update(change)
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} else if (isObject) {
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Object.assign(this[attrName], change)
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} else {
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this[attrName] = change
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}
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if (attrName === 'index') render.sortGraphsByIndex()
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render.drawAllGraph()
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}
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/**
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* @description Update graphics state (with animation)
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* Only shape and style attributes are supported
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* @param {String} attrName Updated attribute name
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* @param {Any} change Updated value
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* @param {Boolean} wait Whether to store the animation waiting
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* for the next animation request
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* @return {Promise} Animation Promise
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*/
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Graph.prototype.animation = async function (attrName, change, wait = false) {
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if (attrName !== 'shape' && attrName !== 'style') {
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console.error('Only supported shape and style animation!')
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return
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}
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change = deepClone(change, true)
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if (attrName === 'style') this.style.colorProcessor(change)
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const changeRoot = this[attrName]
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const changeKeys = Object.keys(change)
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const beforeState = {}
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changeKeys.forEach(key => (beforeState[key] = changeRoot[key]))
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const { animationFrame, animationCurve, animationDelay } = this
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const animationFrameState = transition(animationCurve, beforeState, change, animationFrame, true)
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this.animationRoot.push(changeRoot)
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this.animationKeys.push(changeKeys)
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this.animationFrameState.push(animationFrameState)
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if (wait) return
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if (animationDelay > 0) await delay(animationDelay)
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const { render } = this
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return new Promise(async resolve => {
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await render.launchAnimation()
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resolve()
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})
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}
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/**
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* @description Extract the next frame of data from the animation queue
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* and update the graph state
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* @return {Undefined} Void
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*/
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Graph.prototype.turnNextAnimationFrame = function (timeStamp) {
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const { animationDelay, animationRoot, animationKeys, animationFrameState, animationPause } = this
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if (animationPause) return
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if (Date.now() - timeStamp < animationDelay) return
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animationRoot.forEach((root, i) => {
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animationKeys[i].forEach(key => {
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root[key] = animationFrameState[i][0][key]
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})
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})
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animationFrameState.forEach((stateItem, i) => {
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stateItem.shift()
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const noFrame = stateItem.length === 0
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if (noFrame) animationRoot[i] = null
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if (noFrame) animationKeys[i] = null
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})
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this.animationFrameState = animationFrameState.filter(state => state.length)
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this.animationRoot = animationRoot.filter(root => root)
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this.animationKeys = animationKeys.filter(keys => keys)
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}
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/**
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* @description Skip to the last frame of animation
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* @return {Undefined} Void
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*/
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Graph.prototype.animationEnd = function () {
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const { animationFrameState, animationKeys, animationRoot, render } = this
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animationRoot.forEach((root, i) => {
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const currentKeys = animationKeys[i]
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const lastState = animationFrameState[i].pop()
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currentKeys.forEach(key => (root[key] = lastState[key]))
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})
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this.animationFrameState = []
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this.animationKeys = []
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this.animationRoot = []
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return render.drawAllGraph()
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}
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/**
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* @description Pause animation behavior
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* @return {Undefined} Void
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*/
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Graph.prototype.pauseAnimation = function () {
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this.attr('animationPause', true)
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}
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/**
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* @description Try animation behavior
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* @return {Undefined} Void
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*/
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Graph.prototype.playAnimation = function () {
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const { render } = this
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this.attr('animationPause', false)
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return new Promise(async resolve => {
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await render.launchAnimation()
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resolve()
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})
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}
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/**
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* @description Processor of delete
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* @param {CRender} render Instance of CRender
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* @return {Undefined} Void
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*/
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Graph.prototype.delProcessor = function (render) {
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const { graphs } = render
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const index = graphs.findIndex(graph => graph === this)
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if (index === -1) return
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if (typeof this.beforeDelete === 'function') this.beforeDelete(this)
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graphs.splice(index, 1, null)
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if (typeof this.deleted === 'function') this.deleted(this)
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}
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/**
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* @description Return a timed release Promise
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* @param {Number} time Release time
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* @return {Promise} A timed release Promise
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*/
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function delay (time) {
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return new Promise(resolve => {
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setTimeout(resolve, time)
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})
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}
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