349 lines
11 KiB
JavaScript
349 lines
11 KiB
JavaScript
var cache = cache || {}
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var layer = 'descriptions'
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var baseURL = 'https://pad.ma'
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var imageResolution = 480
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var videoExtension
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async function pandoraAPI(action, data) {
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var url = baseURL + '/api/'
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//var url = '/pandoraAPI/'
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var key = JSON.stringify([action, data])
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if (!cache[key]) {
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var response = await fetch(url, {
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method: 'POST',
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headers: {'Content-Type': 'application/json'},
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body: JSON.stringify({
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action: action,
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data: data
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})
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})
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cache[key] = await response.json()
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}
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return cache[key]
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}
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function setVideoSrc(video, src) {
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var ext
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if (!videoExtension) {
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[
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['video/mp4; codecs="avc1.42E01E, mp4a.40.2"', '.mp4'],
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['video/webm; codecs="vp8, vorbis"', '.webm'],
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].forEach(opt => {
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if (videoExtension) { return }
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if (video.canPlayType(opt[0]).replace('no', '')) {
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videoExtension = opt[1]
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}
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})
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}
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src = src.replace('.webm', videoExtension)
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if (src != video.src) {
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video.src = src
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}
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}
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function updatePlayer(video, frame, currentTime, out, src) {
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var rect = frame.getBoundingClientRect();
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video.style.opacity = 0
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video.style.top = (rect.top + window.scrollY) + 'px'
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video.style.display = 'block';
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if (src) {
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setVideoSrc(video, src)
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}
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//video.poster = frame.querySelector('img').src
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var muted = video.muted
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video.muted = true
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video.currentTime = currentTime
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video.dataset.in = currentTime
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video.dataset.out = out
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video._frame = frame
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const show = event => {
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video.style.opacity = 1
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video.muted = muted
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video.removeEventListener('seeked', show)
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}
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video.addEventListener('seeked', show)
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video.play()
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}
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function isElementInViewport (el) {
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var rect = el.getBoundingClientRect();
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return (
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rect.top >= 0 &&
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rect.left >= 0 &&
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rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && /* or $(window).height() */
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rect.right <= (window.innerWidth || document.documentElement.clientWidth) /* or $(window).width() */
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);
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}
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function onVisibilityChange(el, callback) {
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var old_visible;
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return function () {
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var visible = isElementInViewport(el);
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if (visible != old_visible) {
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old_visible = visible;
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if (visible) {
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el.classList.add('visible')
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} else {
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el.classList.remove('visible')
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}
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if (typeof callback == 'function') {
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callback(visible);
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}
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}
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}
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}
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function scrollTo(element) {
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var delta = element.offsetTop - document.scrollingElement.scrollTop,
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duration = 1000, t = 40, n = duration / t,
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step = delta / n;
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function scroll() {
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if (document.scrollingElement.scrollTop + step > element.offsetTop) {
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document.scrollingElement.scrollTop = element.offsetTop
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n = 0
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} else {
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document.scrollingElement.scrollTop += step
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}
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n--
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if (n) setTimeout(scroll, t)
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}
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scroll()
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}
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function timeupdate(event) {
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if (event.target.dataset.out && event.target.dataset.in) {
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var in_= parseFloat(event.target.dataset.in)
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var out_= parseFloat(event.target.dataset.out)
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if (event.target.currentTime >= out_) {
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/*
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var next
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if (event.target._frame) {
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next = event.target._frame.parentElement.nextSibling
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if (next) {
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next = next.querySelector('.frame')
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}
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}
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if (next) {
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scrollTo(next)
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} else {
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event.target.pause()
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}
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*/
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if (config.pause) {
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event.target.pause()
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} else {
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event.target.currentTime = in_
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}
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}
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}
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}
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function formatInfo(config, ascroll) {
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var info = document.createElement('div')
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var h1 = document.createElement('h1')
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h1.innerHTML = config.title
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info.appendChild(h1)
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var h2 = document.createElement('h2')
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h2.innerHTML = config.byline
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info.appendChild(h2)
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var div = document.createElement('div')
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div.classList.add('intro')
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div.innerHTML = config.body
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info.appendChild(div)
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ascroll.appendChild(info)
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return info
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}
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function showOverlay(event) {
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event.stopPropagation()
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event.preventDefault()
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document.querySelectorAll('#video-overlay').forEach(element => element.remove())
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var video = event.target
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var rect = video.getBoundingClientRect();
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var overlay = document.createElement('div')
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overlay.id = 'video-overlay'
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overlay.style.top = video.style.top
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overlay.style.width = rect.width + 'px'
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overlay.style.height = rect.height + 'px'
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overlay.style.position = 'absolute'
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overlay.style.display = 'flex'
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overlay.style.alignItems = 'center'
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overlay.style.justifyContent = 'center'
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overlay.style.fontSize = '45px'
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video.controls = false
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var off = `🔇`
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var on = `🔊`
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if (video.muted) {
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overlay.innerHTML = off
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} else {
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overlay.innerHTML = on
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}
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overlay.addEventListener('click', event=> {
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video.muted = !video.muted
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if (video.muted) {
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overlay.innerHTML = off
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} else {
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overlay.innerHTML = on
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}
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})
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var timeout = setTimeout(() => {
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video.controls = false
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overlay.remove()
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}, 3000)
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overlay.addEventListener('mousemove', event=> {
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clearTimeout(timeout)
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timeout = setTimeout(() => {
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video.controls = false
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overlay.remove()
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}, 500)
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})
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video.parentElement.appendChild(overlay)
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}
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function renderAnnotation(config, video, ascroll, annotation) {
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var div = document.createElement('div')
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div.classList.add('annotation')
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var color1 = `hsl(${annotation.color1.hue}, 70%, 75%)`
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var color2 = `hsl(${annotation.color2.hue}, 70%, 75%)`
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if (!config.first) {
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config.first = annotation
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config.info.style.background = color1
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}
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div.style.background = `linear-gradient(to bottom, ${color1}, ${color2})`;
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var figcaption = ''
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if (annotation.title) {
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figcaption = `<figcaption><a href="${baseURL}/${annotation.id}" target="_blank">${annotation.title}</a></figcaption>`
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}
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annotation.value = annotation.value.replace('src="/', `src="${baseURL}/`).replace('href="/', `href="${baseURL}/`)
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div.innerHTML = `
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<div class="frame">
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<figure>
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<img src="${baseURL}/${annotation.id.split('/')[0]}/${imageResolution}p${annotation.in}.jpg">
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${figcaption}
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</figure>
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</div>
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<div class="text">${annotation.value}</div>
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`
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ascroll.appendChild(div)
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var frame = div.querySelector('.frame')
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document.addEventListener('scroll', onVisibilityChange(div.querySelector('.frame'), function(visible) {
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var src
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if (config.edit) {
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src = `${baseURL}/${annotation.id.split('/')[0]}/480p.webm`
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}
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if (config.loaded && visible) {
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updatePlayer(video, frame, annotation['in'], annotation['out'], src)
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}
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}))
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}
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function renderAnnotations(config) {
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var ascroll = document.querySelector('#ascroll')
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config.loaded = false
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var video = document.createElement('video')
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video.classList.add('player')
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video.playsinline = true
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video.setAttribute('playsinline', 'playsinline')
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video.setAttribute('webkit-playsinline', 'webkit-playsinline')
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video.WebKitPlaysInline = true
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video.muted = true
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if (config.item) {
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setVideoSrc(video, `${baseURL}/${config.item}/480p.webm`)
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}
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video.addEventListener('timeupdate', timeupdate)
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video.addEventListener('touchstart', showOverlay)
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video.addEventListener('mouseover', showOverlay)
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var box = document.createElement('div')
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box.classList.add('vbox')
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box.appendChild(video)
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ascroll.appendChild(box)
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config.info = formatInfo(config, ascroll)
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config.annotations.forEach(annotation => {
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renderAnnotation(config, video, ascroll, annotation)
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})
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config.loaded = true
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if (config.first) {
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let frame = ascroll.querySelector('.annotation .frame')
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if (frame) {
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var src
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if (config.edit) {
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src = `${baseURL}/${config.first.id.split('/')[0]}/480p.webm`
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}
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updatePlayer(video, frame, config.first['in'], config.first['out'], src)
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}
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}
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}
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async function loadClips(annotations) {
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var items = annotations.map(annotation => annotation.id.split('/')[0])
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items = [...new Set(items)]
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return pandoraAPI('findClips', {itemsQuery: {
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conditions: [{key: 'id', operator: '&', value: items}]
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}, range: [0, 10000], keys: [
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'id', 'hue', 'saturation', 'lightness'
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]}).then(response => {
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var colors = {}
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response.data.items.forEach(clip => {
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colors[clip.id] = clip
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})
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var previous
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annotations.forEach(annotation => {
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var clipId = annotation.id.split('/')[0] + '/' + annotation.in.toFixed(3) + '-'+ annotation.out.toFixed(3)
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annotation.color1 = colors[clipId]
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if(previous) {
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previous.color2 = annotation.color1
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}
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previous = annotation
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})
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if (annotations.length) {
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annotations[annotations.length - 1].color2 = annotations[0].color1
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}
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return annotations
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})
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}
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function loadAnnotations(config) {
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if (config.item) {
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pandoraAPI('get', {id: config.item, keys: ['layers']}).then(response => {
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var annotations = response.data.layers[config.layer].filter(annotation => {
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return !(config.user && annotation.user != config.user)
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})
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loadClips(annotations).then(annotations => {
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config.annotations = annotations
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renderAnnotations(config)
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})
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})
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} else {
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pandoraAPI('getEdit', {id: config.edit, keys: []}).then(response => {
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var annotations = []
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response.data.clips.forEach(clip => {
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clip.layers[config.layer].forEach(annotation => {
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if (config.user && annotation.user != config.user) {
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return
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}
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annotation.title = clip.title
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annotations.push(annotation)
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})
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})
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loadClips(annotations).then(annotations => {
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config.annotations = annotations
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renderAnnotations(config)
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})
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})
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}
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}
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config.layer = config.layer || layer
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if (config.annotations) {
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renderAnnotations(config)
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} else {
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loadAnnotations(config)
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}
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