111 lines
3.3 KiB
JavaScript
111 lines
3.3 KiB
JavaScript
module.exports = Player
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var h = require('virtual-dom/h')
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var electron = require('electron')
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function Player (state, dispatch) {
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// Unfortunately, play/pause can't be done just by modifying HTML.
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// Instead, grab the DOM node and play/pause it if necessary
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var videoElement = document.querySelector('video')
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if (videoElement !== null) {
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if (state.video.isPaused && !videoElement.paused) {
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videoElement.pause()
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} else if (!state.video.isPaused && videoElement.paused) {
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videoElement.play()
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}
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// When the user clicks or drags on the progress bar, jump to that position
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if (state.video.jumpToTime) {
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videoElement.currentTime = state.video.jumpToTime
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state.video.jumpToTime = null
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}
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state.video.currentTime = videoElement.currentTime
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state.video.duration = videoElement.duration
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}
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// Show the video as large as will fit in the window, play immediately
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return h('.player', [
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h('video', {
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src: state.server.localURL,
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autoplay: true,
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onloadedmetadata: onLoadedMetadata
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}),
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renderPlayerControls(state, dispatch)
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])
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// As soon as the video loads far enough to know the dimensions, resize the
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// window to match the video resolution
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function onLoadedMetadata (e) {
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var video = e.target
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var dimensions = {
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width: video.videoWidth,
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height: video.videoHeight
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}
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dispatch('setDimensions', dimensions)
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}
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}
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// Renders all video controls: play/pause, scrub, loading bar
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// TODO: cast buttons
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function renderPlayerControls (state, dispatch) {
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var positionPercent = 100 * state.video.currentTime / state.video.duration
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return h('.player-controls', [
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h('.bottom-bar', [
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h('.loading-bar', renderLoadingBar(state)),
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h('.scrub-bar', {
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draggable: true,
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onclick: handleScrub,
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ondrag: handleScrub
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}),
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h('.playback-cursor', {
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style: {
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left: 'calc(' + positionPercent + '% - 4px)'
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}
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}),
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h('i.icon.play-pause', {
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onclick: () => dispatch('playPause')
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}, state.video.isPaused ? 'play_arrow' : 'pause')
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])
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])
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// Handles a click or drag to scrub (jump to another position in the video)
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function handleScrub (e) {
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var windowWidth = electron.remote.getCurrentWindow().getBounds().width
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var fraction = e.clientX / windowWidth
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var position = fraction * state.video.duration /* seconds */
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dispatch('playbackJump', position)
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}
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}
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// Renders the loading bar. Shows which parts of the torrent are loaded, which
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// can be "spongey" / non-contiguous
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function renderLoadingBar (state) {
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var torrent = state.view.torrentPlaying._torrent
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if (torrent === null) {
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return []
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}
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// Find all contiguous parts of the torrent which are loaded
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var parts = []
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var lastPartPresent = false
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var numParts = torrent.pieces.length
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for (var i = 0; i < numParts; i++) {
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var partPresent = torrent.bitfield.get(i)
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if (partPresent && !lastPartPresent) {
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parts.push({start: i, count: 1})
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} else if (partPresent) {
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parts[parts.length - 1].count++
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}
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lastPartPresent = partPresent
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}
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// Output an list of rectangles to show loading progress
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return parts.map(function (part) {
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return h('.loading-bar-part', {
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style: {
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left: (100 * part.start / numParts) + '%',
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width: (100 * part.count / numParts) + '%'
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}
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})
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})
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}
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