672 lines
22 KiB
JavaScript
672 lines
22 KiB
JavaScript
/* eslint-disable no-unused-vars */
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/* global PDFJS Power1 */
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import { getId } from './utils.js'
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import { DOMScatter } from './scatter.js'
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import CardWrapper from './card/wrapper.js'
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export class CardLoader {
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constructor(
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src,
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{
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x = 0,
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y = 0,
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width = 1000,
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height = 800,
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maxWidth = null,
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maxHeight = null,
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scale = 1,
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minScale = 0.5,
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maxScale = 1.5,
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rotation = 0
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} = {}
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) {
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this.src = src
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this.x = x
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this.y = y
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this.scale = scale
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this.rotation = rotation
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this.maxScale = maxScale
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this.minScale = minScale
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this.wantedWidth = width
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this.wantedHeight = height
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this.maxWidth = maxWidth != null ? maxWidth : window.innerWidth
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this.maxHeight = maxHeight != null ? maxHeight : window.innerHeight
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this.addedNode = null
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}
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unload() {
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if (this.addedNode) {
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this.addedNode.remove()
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this.addedNode = null
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}
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}
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}
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export class PDFLoader extends CardLoader {
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constructor(src, { width = 1640, height = 800, scale = 1 } = {}) {
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super(src, { width, height, scale })
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if (typeof PDFJS == 'undefined') {
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alert('PDF.js needed')
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}
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}
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load(domNode) {
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return new Promise((resolve, reject) => {
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PDFJS.getDocument(this.src).then((pdf) => {
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pdf.getPage(1).then((page) => {
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let scale = this.scale * app.renderer.resolution
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let invScale = 1 / scale
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let viewport = page.getViewport(scale)
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// Prepare canvas using PDF page dimensions.
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let canvas = document.createElement('canvas')
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let context = canvas.getContext('2d')
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canvas.height = viewport.height
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canvas.width = viewport.width
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// Render PDF page into canvas context.
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let renderContext = {
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canvasContext: context,
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viewport: viewport
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}
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page.render(renderContext)
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domNode.appendChild(canvas)
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this.wantedWidth = canvas.width
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this.wantedHeight = canvas.height
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this.scale = invScale
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this.addedNode = canvas
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resolve(this)
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})
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})
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})
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}
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}
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export class ImageLoader extends CardLoader {
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load(domNode) {
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return new Promise((resolve, reject) => {
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let isImage = domNode instanceof HTMLImageElement
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let image = isImage ? domNode : document.createElement('img')
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image.onload = (e) => {
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if (!isImage) {
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domNode.appendChild(image)
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this.addedNode = image
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}
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this.wantedWidth = image.naturalWidth
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this.wantedHeight = image.naturalHeight
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let scaleW = this.maxWidth / image.naturalWidth
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let scaleH = this.maxHeight / image.naturalHeight
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this.scale = Math.min(this.maxScale, Math.min(scaleW, scaleH))
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image.setAttribute('draggable', false)
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image.width = image.naturalWidth
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image.height = image.naturalHeight
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resolve(this)
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}
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image.onerror = (e) => {
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reject(this)
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}
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image.src = this.src
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})
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}
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}
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export class FrameLoader extends CardLoader {
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load(domNode) {
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return new Promise((resolve, reject) => {
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let isFrame = domNode instanceof HTMLIFrameElement
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let iframe = isFrame ? domNode : document.createElement('iframe')
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iframe.frameBorder = 0
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iframe.style.scrolling = false
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iframe.width = this.wantedWidth
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iframe.height = this.wantedHeight
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if (!isFrame) {
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// Unlike img onload is only triggered if the iframe is part of the DOM tree
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domNode.appendChild(iframe)
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this.addedNode = iframe
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}
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iframe.onload = (e) => {
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resolve(this)
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}
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iframe.onerror = (e) => {
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reject(this)
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}
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iframe.src = this.src
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})
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}
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}
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export class HTMLLoader extends CardLoader {
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load(domNode) {
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return new Promise((resolve, reject) => {
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let xhr = new XMLHttpRequest()
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xhr.open('GET', this.src, false)
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xhr.onreadystatechange = (e) => {
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if (xhr.readyState == 4) {
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domNode.innerHTML = this.prepare(xhr.response)
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this.addedNode = domNode.firstElementChild
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let { width, height } = this.size(this.addedNode)
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if (width) this.wantedWidth = width || this.wantedWidth
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if (height) this.wantedHeight = height || this.wantedHeight
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resolve(this)
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}
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}
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xhr.onerror = (e) => {
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reject(this)
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}
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xhr.send()
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})
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}
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/**
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* Preoares the html before it is assigned with innerHTML.
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* Can be overwritten in subclasses.
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*
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* @param {*} html
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* @returns
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* @memberof HTMLLoader
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*/
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prepare(html) {
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return html
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}
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/**
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* Tries to determine the size of the addedNode.
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* Checks for explicit width and height style attributes.
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*
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* Overwrite this method if you want to extract values from other infos.
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*
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* @returns { width: int, height: int }
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* @memberof HTMLLoader
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*/
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size(node) {
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let width = parseInt(node.style.width) || null
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let height = parseInt(node.style.height) || null
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return { width, height }
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}
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}
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export class DOMFlip {
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constructor(
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domScatterContainer,
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flipTemplate,
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frontLoader,
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backLoader,
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{
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closeOnMinScale = false,
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flipDuration = 1,
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fadeDuration = 0.2,
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overdoScaling = 1,
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autoLoad = false,
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center = null,
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preloadBack = false,
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translatable = true,
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scalable = true,
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rotatable = true,
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tapDelegateFactory = null,
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onFront = null,
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onBack = null,
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onClose = null,
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onUpdate = null,
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onRemoved = null,
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onLoaded = null
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} = {}
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) {
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this.domScatterContainer = domScatterContainer
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this.id = getId()
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this.flipDuration = flipDuration
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this.fadeDuration = fadeDuration
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this.closeOnMinScale = closeOnMinScale
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this.flipTemplate = flipTemplate
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this.frontLoader = frontLoader
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this.backLoader = backLoader
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this.translatable = translatable
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this.scalable = scalable
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this.rotatable = rotatable
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this.tapDelegateFactory = tapDelegateFactory
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this.onFrontFlipped = onFront
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this.onBackFlipped = onBack
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this.onClose = onClose
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this.onRemoved = onRemoved
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this.onUpdate = onUpdate
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this.onLoaded = onLoaded
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this.center = center
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this.preloadBack = preloadBack
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this.overdoScaling = overdoScaling
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if (autoLoad) {
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this.load()
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}
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}
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load() {
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return new Promise((resolve, reject) => {
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let t = this.flipTemplate
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let dom = this.domScatterContainer.element
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let wrapper = t.content.querySelector('.flipWrapper')
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wrapper.id = this.id
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let clone = document.importNode(t.content, true)
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dom.appendChild(clone)
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// We cannot use the document fragment itself because it
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// is not part of the main dom tree. After the appendChild
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// call we can access the new dom element by id
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this.cardWrapper = dom.querySelector('#' + this.id)
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let front = this.cardWrapper.querySelector('.front')
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this.frontLoader.load(front).then((loader) => {
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this.frontLoaded(loader).then((obj) => {
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if (this.onLoaded) this.onLoaded()
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resolve(this)
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})
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})
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})
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}
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frontLoaded(loader) {
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return new Promise((resolve, reject) => {
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let scatter = new DOMScatter(this.cardWrapper, this.domScatterContainer, {
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x: loader.x,
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y: loader.y,
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startScale: loader.scale,
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scale: loader.scale,
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maxScale: loader.maxScale,
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minScale: loader.minScale,
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width: loader.wantedWidth,
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height: loader.wantedHeight,
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rotation: loader.rotation,
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translatable: this.translatable,
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scalable: this.scalable,
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rotatable: this.rotatable,
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overdoScaling: this.overdoScaling,
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tapDelegate: this.tapDelegateFactory ? new this.tapDelegateFactory(this.cardWrapper) : null
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})
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if (this.center) {
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scatter.centerAt(this.center)
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}
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if (this.closeOnMinScale) {
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const removeOnMinScale = function () {
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if (scatter.scale <= scatter.minScale) {
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this.flippable.close()
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// 'Disable' overdoscaling to avoid weird jumps on close.
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scatter.minScale /= scatter.overdoScaling
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scatter.overdoScaling = 1
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//Remove callback
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if (scatter.onTransform) {
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let callbackIdx = scatter.onTransform.indexOf(removeOnMinScale)
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scatter.onTransform.splice(callbackIdx, 1)
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}
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}
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}.bind(this)
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scatter.addTransformEventCallback(removeOnMinScale)
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}
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let flippable = new DOMFlippable(this.cardWrapper, scatter, this)
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let back = this.cardWrapper.querySelector('.back')
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if (this.preloadBack) {
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this.backLoader.load(back).then((loader) => {
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this.setupFlippable(flippable, loader)
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})
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}
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this.flippable = flippable
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resolve(this)
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})
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}
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centerAt(p) {
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this.center = p
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this.flippable.centerAt(p)
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}
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zoom(scale) {
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this.flippable.zoom(scale)
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}
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setupFlippable(flippable, loader) {
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flippable.wantedWidth = loader.wantedWidth
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flippable.wantedHeight = loader.wantedHeight
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flippable.wantedScale = loader.scale
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flippable.minScale = loader.minScale
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flippable.maxScale = loader.maxScale
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flippable.scaleButtons()
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}
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start({ targetCenter = null } = {}) {
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this.flippable.showFront()
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if (this.preloadBack) {
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this.flippable.start({ duration: this.flipDuration, targetCenter })
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} else {
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let back = this.cardWrapper.querySelector('.back')
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let flippable = this.flippable
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this.backLoader.load(back).then((loader) => {
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this.setupFlippable(flippable, loader)
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flippable.start({ duration: this.flipDuration, targetCenter })
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})
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}
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}
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fadeOutAndRemove() {
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TweenLite.to(this.cardWrapper, this.fadeDuration, {
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opacity: 0,
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onComplete: () => {
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this.cardWrapper.remove()
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}
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})
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}
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closed() {
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this.unload()
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}
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unload() {
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if (!this.preloadBack) {
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this.backLoader.unload()
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}
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}
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}
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export class DOMFlippable {
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constructor(element, scatter, flip) {
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// Set log to console.log or a custom log function
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// define data structures to store our touchpoints in
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this.element = element
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this.flip = flip
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this.card = element.querySelector('.flipCard')
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this.front = element.querySelector('.front')
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this.back = element.querySelector('.back')
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this.flipped = false
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this.scatter = scatter
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this.onFrontFlipped = flip.onFrontFlipped
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this.onBackFlipped = flip.onBackFlipped
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this.onClose = flip.onClose
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this.onRemoved = flip.onRemoved
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this.onUpdate = flip.onUpdate
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this.wantedWidth = scatter.width
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this.wantedHeight = scatter.height
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this.wantedScale = scatter.scale
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this.minScale = scatter.minScale
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this.maxScale = scatter.maxScale
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this.flipDuration = flip.flipDuration
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this.fadeDuration = flip.fadeDuration
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scatter.addTransformEventCallback(this.scatterTransformed.bind(this))
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TweenLite.set(this.element, { perspective: 5000 })
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TweenLite.set(this.card, { transformStyle: 'preserve-3d' })
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TweenLite.set(this.back, { rotationY: -180 })
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TweenLite.set([this.back, this.front], {
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backfaceVisibility: 'hidden',
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perspective: 5000
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})
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TweenLite.set(this.front, { visibility: 'visible' })
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this.infoBtn = element.querySelector('.infoBtn')
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this.backBtn = element.querySelector('.backBtn')
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this.closeBtn = element.querySelector('.closeBtn')
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/* Buttons are not guaranteed to exist. */
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if (scatter.tapDelegate == null) {
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let tapDelegate = new CardWrapper(element)
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scatter.tapDelegate = tapDelegate
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}
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if (this.infoBtn) {
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scatter.tapDelegate.onTap(this.infoBtn, (event) => {
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this.flip.start()
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})
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this.enable(this.infoBtn)
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}
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if (this.backBtn) {
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scatter.tapDelegate.onTap(this.backBtn, (event) => {
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this.start()
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})
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}
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if (this.closeBtn) {
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scatter.tapDelegate.onTap(this.closeBtn, (event) => {
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this.close()
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})
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this.enable(this.closeBtn)
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}
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this.scaleButtons()
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this.bringToFront()
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}
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close() {
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this.disable(this.infoBtn)
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this.disable(this.closeBtn)
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if (this.onClose) {
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this.onClose(this)
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this.flip.closed()
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} else {
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this.scatter.zoom(0.1, {
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animate: this.fadeDuration,
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onComplete: () => {
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this.element.remove()
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this.flip.closed()
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if (this.onRemoved) {
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this.onRemoved.call(this)
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}
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}
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})
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}
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}
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showFront() {
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TweenLite.set(this.front, { visibility: 'visible' })
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}
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centerAt(p) {
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this.scatter.centerAt(p)
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}
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zoom(scale) {
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this.scatter.zoom(scale)
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}
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get buttonScale() {
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let iscale = 1.0
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if (this.scatter != null) {
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let scale = this.scatter.scale || 1
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iscale = 1.0 / scale
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}
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return iscale
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}
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scaleButtons() {
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TweenLite.set([this.infoBtn, this.backBtn, this.closeBtn], {
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scale: this.buttonScale
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})
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}
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bringToFront() {
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this.scatter.bringToFront()
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TweenLite.set(this.element, { zIndex: DOMScatter.zIndex++ })
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}
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clickInfo() {
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this.bringToFront()
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this.infoBtn.click()
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}
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scatterTransformed(event) {
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this.scaleButtons()
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}
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targetRotation(alpha) {
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let ortho = 90
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let rest = alpha % ortho
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let delta = 0.0
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if (rest > ortho / 2.0) {
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delta = ortho - rest
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} else {
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delta = -rest
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}
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return delta
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}
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infoValues(info) {
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let startX = this.element._gsTransform.x
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let startY = this.element._gsTransform.y
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let startAngle = this.element._gsTransform.rotation
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let startScale = this.element._gsTransform.scaleX
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let w = this.element.style.width
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let h = this.element.style.height
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// eslint-disable-next-line no-console
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console.log(info, startX, startY, startAngle, startScale, w, h)
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}
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show(element, duration = 0, alpha = 1) {
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if (element) {
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TweenLite.to(element, duration, { autoAlpha: alpha }) // visibility: 'visible', display: 'initial'})
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}
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}
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hide(element, duration = 0, alpha = 0) {
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if (element) {
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TweenLite.to(element, duration, { autoAlpha: alpha }) // {visibility: 'hidden', display: 'none'})
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}
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}
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enable(button) {
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this.show(button, this.fadeDuration)
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if (button) {
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TweenLite.set(button, { pointerEvents: 'auto' })
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}
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}
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disable(button) {
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this.hide(button, this.fadeDuration)
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if (button) {
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TweenLite.set(button, { pointerEvents: 'none' })
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}
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}
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start({ targetCenter = null } = {}) {
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this.bringToFront()
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console.log('flippable start', this.flipped)
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if (!this.flipped) {
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this.startX = this.element._gsTransform.x
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this.startY = this.element._gsTransform.y
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this.startAngle = this.element._gsTransform.rotation
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this.startScale = this.element._gsTransform.scaleX
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this.startWidth = this.element.style.width
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this.startHeight = this.element.style.height
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this.scatterStartWidth = this.scatter.width
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this.scatterStartHeight = this.scatter.height
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this.show(this.back)
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this.disable(this.infoBtn)
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this.disable(this.closeBtn)
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|
} else {
|
|
this.show(this.front, this.fadeDuration)
|
|
this.disable(this.backBtn)
|
|
}
|
|
let { scalable, translatable, rotatable } = this.scatter
|
|
this.saved = { scalable, translatable, rotatable }
|
|
this.scatter.scalable = false
|
|
this.scatter.translatable = false
|
|
this.scatter.rotatable = false
|
|
this.scatter.killAnimation()
|
|
|
|
this.flipped = !this.flipped
|
|
let targetY = this.flipped ? 180 : 0
|
|
let targetZ = this.flipped ? this.startAngle + this.targetRotation(this.startAngle) : this.startAngle
|
|
let targetScale = this.flipped ? this.wantedScale : this.startScale
|
|
let w = this.flipped ? this.wantedWidth : this.startWidth
|
|
let h = this.flipped ? this.wantedHeight : this.startHeight
|
|
let dw = this.wantedWidth - this.scatter.width
|
|
let dh = this.wantedHeight - this.scatter.height
|
|
let tc = targetCenter
|
|
let xx = tc != null ? tc.x - w / 2 : this.startX - dw / 2
|
|
let yy = tc != null ? tc.y - h / 2 : this.startY - dh / 2
|
|
let x = this.flipped ? xx : this.startX
|
|
let y = this.flipped ? yy : this.startY
|
|
|
|
let onUpdate = this.onUpdate !== null ? () => this.onUpdate(this) : null
|
|
TweenLite.to(this.card, this.flipDuration, {
|
|
rotationY: targetY,
|
|
ease: Power1.easeOut,
|
|
transformOrigin: '50% 50%',
|
|
onUpdate,
|
|
onComplete: (e) => {
|
|
if (this.flipped) {
|
|
//this.hide(this.front)
|
|
this.enable(this.backBtn)
|
|
this.show(this.backBtn)
|
|
|
|
if (this.onFrontFlipped) {
|
|
this.onFrontFlipped(this)
|
|
}
|
|
} else {
|
|
if (this.onBackFlipped == null) {
|
|
this.enable(this.infoBtn, this.fadeDuration)
|
|
this.enable(this.closeBtn, this.fadeDuration)
|
|
} else {
|
|
this.onBackFlipped(this)
|
|
}
|
|
this.flip.unload()
|
|
}
|
|
this.scatter.scale = targetScale
|
|
this.scaleButtons()
|
|
this.scatter.rotationDegrees = targetZ
|
|
this.scatter.width = this.flipped ? w : this.scatterStartWidth
|
|
this.scatter.height = this.flipped ? h : this.scatterStartHeight
|
|
|
|
let { scalable, translatable, rotatable } = this.saved
|
|
this.scatter.scalable = scalable
|
|
this.scatter.translatable = translatable
|
|
this.scatter.rotatable = rotatable
|
|
},
|
|
force3D: true
|
|
})
|
|
// See https://greensock.com/forums/topic/7997-rotate-the-shortest-way/
|
|
const duration = this.flipDuration / 2
|
|
TweenLite.to(this.element, duration, {
|
|
scale: targetScale,
|
|
ease: Power1.easeOut,
|
|
rotationZ: targetZ + '_short',
|
|
transformOrigin: '50% 50%',
|
|
width: w,
|
|
height: h,
|
|
x: x,
|
|
y: y,
|
|
onComplete: (e) => {
|
|
console.log('onComplete', e)
|
|
if (this.flipped) {
|
|
this.hide(this.front)
|
|
// this.hide(this.infoBtn)
|
|
} else {
|
|
this.hide(this.back)
|
|
// this.show(this.infoBtn)
|
|
}
|
|
}
|
|
})
|
|
|
|
//uo: check for special case that the front image must be adapted to the back size
|
|
let frontImage = this.front.querySelector('img')
|
|
if (frontImage) {
|
|
// Assumes that startWidth and startHeight are encoded in px
|
|
let sh = parseInt(this.startHeight)
|
|
let sw = parseInt(this.startWidth)
|
|
if (this.flipped) {
|
|
let scaleY = h / sh
|
|
let scaleX = w / sw
|
|
TweenLite.to(frontImage, duration, {
|
|
ease: Power1.easeOut,
|
|
transformOrigin: '0% 0%',
|
|
scaleY,
|
|
scaleX
|
|
})
|
|
} else {
|
|
TweenLite.to(frontImage, duration, {
|
|
ease: Power1.easeOut,
|
|
transformOrigin: '0% 0%',
|
|
scaleY: 1.0,
|
|
scaleX: 1.0
|
|
})
|
|
}
|
|
}
|
|
}
|
|
}
|