njpma/app/static/js/utils.js
2022-09-07 12:12:21 +02:00

138 lines
4.2 KiB
JavaScript

var videoExtension
function setVideoSrc(video, src) {
var ext
if (!videoExtension) {
[
['video/mp4; codecs="avc1.42E01E, mp4a.40.2"', '.mp4'],
['video/webm; codecs="vp8, vorbis"', '.webm'],
].forEach(opt => {
if (videoExtension) { return }
if (video.canPlayType(opt[0]).replace('no', '')) {
videoExtension = opt[1]
}
})
}
src = src.replace('.webm', videoExtension)
if (src != video.src) {
video.src = src
}
}
function scrollTo(element) {
var delta = element.offsetTop - document.scrollingElement.scrollTop,
duration = 1000, t = 40, n = duration / t,
step = delta / n;
function scroll() {
if (document.scrollingElement.scrollTop + step > element.offsetTop) {
document.scrollingElement.scrollTop = element.offsetTop
n = 0
} else {
document.scrollingElement.scrollTop += step
}
n--
if (n) setTimeout(scroll, t)
}
scroll()
}
function showOverlay(event) {
//console.log('show overlay', event.target, event)
event.stopPropagation()
event.preventDefault()
document.querySelectorAll('#video-overlay').forEach(element => element.remove())
var video = event.target
var rect = video.getBoundingClientRect();
if (video._frame) {
rect = video._frame.getBoundingClientRect();
}
var overlay = document.createElement('div')
overlay.id = 'video-overlay'
overlay.style.top = video.style.top
overlay.style.width = rect.width + 'px'
overlay.style.height = rect.height + 'px'
overlay.style.position = 'absolute'
overlay.style.display = 'flex'
overlay.style.alignItems = 'center'
overlay.style.justifyContent = 'center'
//overlay.style.fontSize = '45px'
video.controls = false
var off = `<span class="annotation-icon-wrapper animated"><span class="text f-icon-volume_off annotation-icon"></span>`
var on = `<span class="annotation-icon-wrapper"><span class="f-icon-volume_down annotation-icon"></span></span>`
if (video.muted) {
overlay.innerHTML = off
} else {
overlay.innerHTML = on
}
overlay.addEventListener('click', event=> {
const muted = video.muted
document.querySelectorAll('pandora-scroll').forEach(el => el.mute() )
video.muted = !muted
if (video.muted) {
overlay.innerHTML = off
} else {
overlay.innerHTML = on
}
})
var timeout = setTimeout(() => {
video.controls = false
overlay.remove()
}, 3000)
overlay.addEventListener('mousemove', event=> {
clearTimeout(timeout)
timeout = setTimeout(() => {
video.controls = false
overlay.remove()
}, 500)
})
video.parentElement.appendChild(overlay)
}
function isInside(config, annotation) {
if (!config['in'] && !config['out']) {
return true
}
if (annotation['in'] < config['out'] && annotation['out'] > config['in']) {
annotation['in'] = Math.max(annotation['in'], config['in'])
annotation['out'] = Math.min(annotation['out'], config['out'])
return true
}
return false
}
function isElementInViewport (el) {
var rect = el.getBoundingClientRect();
return (
rect.top >= 0 &&
rect.left >= 0 &&
rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && /* or $(window).height() */
Math.floor(rect.right) <= (window.innerWidth || document.documentElement.clientWidth) /* or $(window).width() */
);
}
function onVisibilityChange(el, callback) {
var old_visible;
return function () {
var visible = isElementInViewport(el);
if (visible != old_visible) {
old_visible = visible;
if (visible) {
el.classList.add('visible')
} else {
el.classList.remove('visible')
}
if (typeof callback == 'function') {
callback(visible);
}
}
}
}
function parseTime(value) {
return value.split(":").map(p => parseFloat(p)).reduce((c, p) => { return c*60 + p}, 0)
}