273 lines
9.7 KiB
JavaScript
273 lines
9.7 KiB
JavaScript
/* global $, interfaceConfig */
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import UIEvents from "../../../service/UI/UIEvents";
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import UIUtil from "../util/UIUtil";
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const FilmStrip = {
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/**
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*
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* @param eventEmitter the {EventEmitter} through which {FilmStrip} is to
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* emit/fire {UIEvents} (such as {UIEvents.TOGGLED_FILM_STRIP}).
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*/
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init (eventEmitter) {
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this.filmStrip = $('#remoteVideos');
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this.eventEmitter = eventEmitter;
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},
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/**
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* Toggles the visibility of the film strip.
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*
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* @param visible optional {Boolean} which specifies the desired visibility
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* of the film strip. If not specified, the visibility will be flipped
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* (i.e. toggled); otherwise, the visibility will be set to the specified
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* value.
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*/
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toggleFilmStrip (visible) {
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if (typeof visible === 'boolean'
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&& this.isFilmStripVisible() == visible) {
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return;
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}
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this.filmStrip.toggleClass("hidden");
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// Emit/fire UIEvents.TOGGLED_FILM_STRIP.
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var eventEmitter = this.eventEmitter;
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if (eventEmitter) {
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eventEmitter.emit(
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UIEvents.TOGGLED_FILM_STRIP,
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this.isFilmStripVisible());
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}
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},
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isFilmStripVisible () {
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return !this.filmStrip.hasClass('hidden');
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},
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setupFilmStripOnly () {
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this.filmStrip.css({
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padding: "0px 0px 18px 0px",
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right: 0
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});
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},
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getFilmStripHeight () {
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if (this.isFilmStripVisible()) {
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return this.filmStrip.outerHeight();
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} else {
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return 0;
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}
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},
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getFilmStripWidth () {
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return this.filmStrip.innerWidth()
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- parseInt(this.filmStrip.css('paddingLeft'), 10)
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- parseInt(this.filmStrip.css('paddingRight'), 10);
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},
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calculateThumbnailSize() {
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let availableSizes = this.calculateAvailableSize();
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let width = availableSizes.availableWidth;
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let height = availableSizes.availableHeight;
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return this.calculateThumbnailSizeFromAvailable(width, height);
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},
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calculateAvailableSize() {
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let availableHeight = interfaceConfig.FILM_STRIP_MAX_HEIGHT;
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let thumbs = this.getThumbs(true);
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let numvids = thumbs.remoteThumbs.length;
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let localVideoContainer = $("#localVideoContainer");
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/**
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* If the videoAreaAvailableWidth is set we use this one to calculate
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* the filmStrip width, because we're probably in a state where the
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* film strip size hasn't been updated yet, but it will be.
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*/
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let videoAreaAvailableWidth
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= UIUtil.getAvailableVideoWidth()
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- UIUtil.parseCssInt(this.filmStrip.css('right'), 10)
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- UIUtil.parseCssInt(this.filmStrip.css('paddingLeft'), 10)
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- UIUtil.parseCssInt(this.filmStrip.css('paddingRight'), 10)
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- UIUtil.parseCssInt(this.filmStrip.css('borderLeftWidth'), 10)
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- UIUtil.parseCssInt(this.filmStrip.css('borderRightWidth'), 10)
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- 5;
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let availableWidth = videoAreaAvailableWidth;
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// If local thumb is not hidden
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if(thumbs.localThumb) {
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availableWidth = Math.floor(
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(videoAreaAvailableWidth - (
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UIUtil.parseCssInt(
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localVideoContainer.css('borderLeftWidth'), 10)
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+ UIUtil.parseCssInt(
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localVideoContainer.css('borderRightWidth'), 10)
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+ UIUtil.parseCssInt(
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localVideoContainer.css('paddingLeft'), 10)
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+ UIUtil.parseCssInt(
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localVideoContainer.css('paddingRight'), 10)
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+ UIUtil.parseCssInt(
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localVideoContainer.css('marginLeft'), 10)
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+ UIUtil.parseCssInt(
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localVideoContainer.css('marginRight'), 10)))
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);
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}
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// If the number of videos is 0 or undefined we don't need to calculate
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// further.
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if (numvids) {
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let remoteVideoContainer = thumbs.remoteThumbs.eq(0);
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availableWidth = Math.floor(
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(videoAreaAvailableWidth - numvids * (
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UIUtil.parseCssInt(
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remoteVideoContainer.css('borderLeftWidth'), 10)
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+ UIUtil.parseCssInt(
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remoteVideoContainer.css('borderRightWidth'), 10)
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+ UIUtil.parseCssInt(
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remoteVideoContainer.css('paddingLeft'), 10)
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+ UIUtil.parseCssInt(
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remoteVideoContainer.css('paddingRight'), 10)
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+ UIUtil.parseCssInt(
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remoteVideoContainer.css('marginLeft'), 10)
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+ UIUtil.parseCssInt(
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remoteVideoContainer.css('marginRight'), 10)))
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);
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}
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let maxHeight
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// If the MAX_HEIGHT property hasn't been specified
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// we have the static value.
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= Math.min(interfaceConfig.FILM_STRIP_MAX_HEIGHT || 120,
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availableHeight);
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availableHeight
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= Math.min(maxHeight, window.innerHeight - 18);
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return { availableWidth, availableHeight };
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},
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/**
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* Calculate the thumbnail size in order to fit all the thumnails in passed
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* dimensions.
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* NOTE: Here we assume that the remote and local thumbnails are with the
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* same height.
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* @param {int} availableWidth the maximum width for all thumbnails
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* @param {int} availableHeight the maximum height for all thumbnails
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*/
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calculateThumbnailSizeFromAvailable(availableWidth, availableHeight) {
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/**
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* Let:
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* lW - width of the local thumbnail
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* rW - width of the remote thumbnail
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* h - the height of the thumbnails
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* remoteRatio - width:height for the remote thumbnail
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* localRatio - width:height for the local thumbnail
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* numberRemoteThumbs - number of remote thumbnails (we have only one
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* local thumbnail)
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*
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* Since the height for local thumbnail = height for remote thumbnail
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* and we know the ratio (width:height) for the local and for the
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* remote thumbnail we can find rW/lW:
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* rW / remoteRatio = lW / localRatio then -
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* remoteLocalWidthRatio = rW / lW = remoteRatio / localRatio
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* and rW = lW * remoteRatio / localRatio = lW * remoteLocalWidthRatio
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* And the total width for the thumbnails is:
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* totalWidth = rW * numberRemoteThumbs + lW
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* = lW * remoteLocalWidthRatio * numberRemoteThumbs + lW =
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* lW * (remoteLocalWidthRatio * numberRemoteThumbs + 1)
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* and the h = lW/localRatio
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*
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* In order to fit all the thumbails in the area defined by
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* availableWidth * availableHeight we should check one of the
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* following options:
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* 1) if availableHeight == h - totalWidth should be less than
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* availableWidth
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* 2) if availableWidth == totalWidth - h should be less than
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* availableHeight
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*
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* 1) or 2) will be true and we are going to use it to calculate all
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* sizes.
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*
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* if 1) is true that means that
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* availableHeight/h > availableWidth/totalWidth otherwise 2) is true
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*/
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const numberRemoteThumbs = this.getThumbs(true).remoteThumbs.length;
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const remoteLocalWidthRatio = interfaceConfig.REMOTE_THUMBNAIL_RATIO /
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interfaceConfig.LOCAL_THUMBNAIL_RATIO;
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const lW = Math.min(availableWidth /
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(remoteLocalWidthRatio * numberRemoteThumbs + 1), availableHeight *
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interfaceConfig.LOCAL_THUMBNAIL_RATIO);
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const h = lW / interfaceConfig.LOCAL_THUMBNAIL_RATIO;
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return { localVideo:{
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thumbWidth: lW,
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thumbHeight: h
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}, remoteVideo: {
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thumbWidth: lW * remoteLocalWidthRatio,
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thumbHeight: h
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}
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};
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},
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resizeThumbnails (local, remote,
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animate = false, forceUpdate = false) {
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return new Promise(resolve => {
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let thumbs = this.getThumbs(!forceUpdate);
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if(thumbs.localThumb)
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thumbs.localThumb.animate({
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height: local.thumbHeight,
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width: local.thumbWidth
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}, {
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queue: false,
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duration: animate ? 500 : 0,
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complete: resolve
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});
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if(thumbs.remoteThumbs)
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thumbs.remoteThumbs.animate({
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height: remote.thumbHeight,
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width: remote.thumbWidth
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}, {
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queue: false,
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duration: animate ? 500 : 0,
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complete: resolve
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});
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this.filmStrip.animate({
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// adds 2 px because of small video 1px border
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height: remote.thumbHeight + 2
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}, {
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queue: false,
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duration: animate ? 500 : 0
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});
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if (!animate) {
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resolve();
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}
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});
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},
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getThumbs (only_visible = false) {
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let selector = 'span';
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if (only_visible) {
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selector += ':visible';
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}
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let localThumb = $("#localVideoContainer");
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let remoteThumbs = this.filmStrip.children(selector)
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.not("#localVideoContainer");
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// Exclude the local video container if it has been hidden.
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if (localThumb.hasClass("hidden")) {
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return { remoteThumbs };
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} else {
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return { remoteThumbs, localThumb };
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}
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}
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};
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export default FilmStrip;
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