bigbluebutton-Github/bigbluebutton-html5/imports/ui/components/screenshare/component.jsx
2023-07-04 13:14:09 -03:00

592 lines
17 KiB
JavaScript
Executable File

import React from 'react';
import { defineMessages, injectIntl } from 'react-intl';
import PropTypes from 'prop-types';
import _ from 'lodash';
import { Session } from 'meteor/session';
import FullscreenButtonContainer from '/imports/ui/components/common/fullscreen-button/container';
import SwitchButtonContainer from './switch-button/container';
import Styled from './styles';
import VolumeSlider from '../external-video-player/volume-slider/component';
import AutoplayOverlay from '../media/autoplay-overlay/component';
import logger from '/imports/startup/client/logger';
import playAndRetry from '/imports/utils/mediaElementPlayRetry';
import { notify } from '/imports/ui/services/notification';
import {
SCREENSHARE_MEDIA_ELEMENT_NAME,
isMediaFlowing,
screenshareHasEnded,
screenshareHasStarted,
getMediaElement,
getMediaElementDimensions,
attachLocalPreviewStream,
setVolume,
getVolume,
getStats,
} from '/imports/ui/components/screenshare/service';
import {
isStreamStateHealthy,
subscribeToStreamStateChange,
unsubscribeFromStreamStateChange,
} from '/imports/ui/services/bbb-webrtc-sfu/stream-state-service';
import { ACTIONS } from '/imports/ui/components/layout/enums';
import Settings from '/imports/ui/services/settings';
import deviceInfo from '/imports/utils/deviceInfo';
const intlMessages = defineMessages({
screenShareLabel: {
id: 'app.screenshare.screenShareLabel',
description: 'screen share area element label',
},
presenterLoadingLabel: {
id: 'app.screenshare.presenterLoadingLabel',
},
viewerLoadingLabel: {
id: 'app.screenshare.viewerLoadingLabel',
},
presenterSharingLabel: {
id: 'app.screenshare.presenterSharingLabel',
},
autoplayBlockedDesc: {
id: 'app.media.screenshare.autoplayBlockedDesc',
},
autoplayAllowLabel: {
id: 'app.media.screenshare.autoplayAllowLabel',
},
screenshareStarted: {
id: 'app.media.screenshare.start',
description: 'toast to show when a screenshare has started',
},
screenshareEnded: {
id: 'app.media.screenshare.end',
description: 'toast to show when a screenshare has ended',
},
screenshareEndedDueToDataSaving: {
id: 'app.media.screenshare.endDueToDataSaving',
description: 'toast to show when a screenshare has ended by changing data savings option',
},
});
const ALLOW_FULLSCREEN = Meteor.settings.public.app.allowFullscreen;
const MOBILE_HOVER_TIMEOUT = 5000;
const MEDIA_FLOW_PROBE_INTERVAL = 500;
const SCREEN_SIZE_DISPATCH_INTERVAL = 500;
class ScreenshareComponent extends React.Component {
static renderScreenshareContainerInside(mainText) {
return (
<Styled.ScreenshareContainerInside>
<Styled.MainText>{mainText}</Styled.MainText>
</Styled.ScreenshareContainerInside>
);
}
constructor() {
super();
this.state = {
loaded: false,
autoplayBlocked: false,
mediaFlowing: false,
switched: false,
// Volume control hover toolbar
showHoverToolBar: false,
};
this.onLoadedData = this.onLoadedData.bind(this);
this.onLoadedMetadata = this.onLoadedMetadata.bind(this);
this.onVideoResize = this.onVideoResize.bind(this);
this.handleAllowAutoplay = this.handleAllowAutoplay.bind(this);
this.handlePlayElementFailed = this.handlePlayElementFailed.bind(this);
this.failedMediaElements = [];
this.onStreamStateChange = this.onStreamStateChange.bind(this);
this.onSwitched = this.onSwitched.bind(this);
this.handleOnVolumeChanged = this.handleOnVolumeChanged.bind(this);
this.handleOnMuted = this.handleOnMuted.bind(this);
this.debouncedDispatchScreenShareSize = _.debounce(
this.dispatchScreenShareSize,
SCREEN_SIZE_DISPATCH_INTERVAL,
{ leading: false, trailing: true },
);
this.volume = getVolume();
this.mobileHoverSetTimeout = null;
this.mediaFlowMonitor = null;
}
componentDidMount() {
const {
isLayoutSwapped,
layoutContextDispatch,
intl,
isPresenter,
isSharedNotesPinned,
} = this.props;
screenshareHasStarted(isPresenter);
// Autoplay failure handling
window.addEventListener('screensharePlayFailed', this.handlePlayElementFailed);
// Stream health state tracker to propagate UI changes on reconnections
subscribeToStreamStateChange('screenshare', this.onStreamStateChange);
// Attaches the local stream if it exists to serve as the local presenter preview
attachLocalPreviewStream(getMediaElement());
notify(intl.formatMessage(intlMessages.screenshareStarted), 'info', 'desktop');
layoutContextDispatch({
type: ACTIONS.SET_HAS_SCREEN_SHARE,
value: true,
});
if (isLayoutSwapped) {
layoutContextDispatch({
type: ACTIONS.SET_PRESENTATION_IS_OPEN,
value: true,
});
}
Session.set('pinnedNotesLastState', isSharedNotesPinned);
}
componentDidUpdate(prevProps) {
const { isPresenter } = this.props;
if (prevProps.isPresenter && !isPresenter) {
screenshareHasEnded();
}
}
componentWillUnmount() {
const {
intl,
fullscreenContext,
layoutContextDispatch,
toggleSwapLayout,
pinSharedNotes,
} = this.props;
screenshareHasEnded();
window.removeEventListener('screensharePlayFailed', this.handlePlayElementFailed);
unsubscribeFromStreamStateChange('screenshare', this.onStreamStateChange);
if (Settings.dataSaving.viewScreenshare) {
notify(intl.formatMessage(intlMessages.screenshareEnded), 'info', 'desktop');
} else {
notify(intl.formatMessage(intlMessages.screenshareEndedDueToDataSaving), 'info', 'desktop');
}
layoutContextDispatch({
type: ACTIONS.SET_HAS_SCREEN_SHARE,
value: false,
});
if (fullscreenContext) {
layoutContextDispatch({
type: ACTIONS.SET_FULLSCREEN_ELEMENT,
value: {
element: '',
group: '',
},
});
}
this.clearMediaFlowingMonitor();
layoutContextDispatch({
type: ACTIONS.SET_PRESENTATION_IS_OPEN,
value: Session.get('presentationLastState'),
});
pinSharedNotes(Session.get('pinnedNotesLastState'));
}
clearMediaFlowingMonitor() {
if (this.mediaFlowMonitor) {
Meteor.clearInterval(this.mediaFlowMonitor);
this.mediaFlowMonitor = null;
}
}
handleAllowAutoplay() {
const { autoplayBlocked } = this.state;
logger.info({
logCode: 'screenshare_autoplay_allowed',
}, 'Screenshare media autoplay allowed by the user');
window.removeEventListener('screensharePlayFailed', this.handlePlayElementFailed);
while (this.failedMediaElements.length) {
const mediaElement = this.failedMediaElements.shift();
if (mediaElement) {
const played = playAndRetry(mediaElement);
if (!played) {
logger.error({
logCode: 'screenshare_autoplay_handling_failed',
}, 'Screenshare autoplay handling failed to play media');
} else {
logger.info({
logCode: 'screenshare_viewer_media_play_success',
}, 'Screenshare viewer media played successfully');
}
}
}
if (autoplayBlocked) { this.setState({ autoplayBlocked: false }); }
}
handlePlayElementFailed(e) {
const { mediaElement } = e.detail;
const { autoplayBlocked } = this.state;
e.stopPropagation();
this.failedMediaElements.push(mediaElement);
if (!autoplayBlocked) {
logger.info({
logCode: 'screenshare_autoplay_prompt',
}, 'Prompting user for action to play screenshare media');
this.setState({ autoplayBlocked: true });
}
}
async monitorMediaFlow() {
let previousStats = await getStats();
this.mediaFlowMonitor = Meteor.setInterval(async () => {
const { mediaFlowing: prevMediaFlowing } = this.state;
let mediaFlowing;
const currentStats = await getStats();
try {
mediaFlowing = isMediaFlowing(previousStats, currentStats);
} catch (error) {
// Stats processing failed for whatever reason - maintain previous state
mediaFlowing = prevMediaFlowing;
logger.warn({
logCode: 'screenshare_media_monitor_stats_failed',
extraInfo: {
errorName: error.name,
errorMessage: error.message,
},
}, 'Failed to collect screenshare stats, flow monitor');
}
previousStats = currentStats;
if (prevMediaFlowing !== mediaFlowing) this.setState({ mediaFlowing });
}, MEDIA_FLOW_PROBE_INTERVAL);
}
dispatchScreenShareSize() {
const {
layoutContextDispatch,
} = this.props;
const { width, height } = getMediaElementDimensions();
const value = {
width,
height,
browserWidth: window.innerWidth,
browserHeight: window.innerHeight,
}
layoutContextDispatch({
type: ACTIONS.SET_SCREEN_SHARE_SIZE,
value,
});
}
onVideoResize() {
// Debounced version of the dispatcher to pace things out - we don't want
// to hog the CPU just for resize recalculations...
this.debouncedDispatchScreenShareSize();
}
onLoadedMetadata() {
const element = getMediaElement();
// Track HTMLVideo's resize event to propagate stream size changes to the
// layout engine. See this.onVideoResize;
if (element && typeof element.onresize !== 'function') {
element.onresize = this.onVideoResize;
}
// Dispatch the initial stream size to the layout engine
this.dispatchScreenShareSize();
}
onLoadedData() {
this.setState({ loaded: true });
}
onSwitched() {
this.setState((prevState) => ({ switched: !prevState.switched }));
}
handleOnVolumeChanged(volume) {
this.volume = volume;
setVolume(volume);
}
handleOnMuted(muted) {
if (muted) {
setVolume(0);
} else {
setVolume(this.volume);
}
}
onStreamStateChange(event) {
const { streamState } = event.detail;
const { mediaFlowing } = this.state;
const isStreamHealthy = isStreamStateHealthy(streamState);
event.stopPropagation();
if (isStreamHealthy) {
this.clearMediaFlowingMonitor();
// Current state is media not flowing - stream is now healthy so flip it
if (!mediaFlowing) this.setState({ mediaFlowing: isStreamHealthy });
} else if (this.mediaFlowMonitor == null) this.monitorMediaFlow();
}
renderFullscreenButton() {
const { intl, fullscreenElementId, fullscreenContext } = this.props;
if (!ALLOW_FULLSCREEN) return null;
return (
<FullscreenButtonContainer
key={_.uniqueId('fullscreenButton-')}
elementName={intl.formatMessage(intlMessages.screenShareLabel)}
fullscreenRef={this.screenshareContainer}
elementId={fullscreenElementId}
isFullscreen={fullscreenContext}
dark
/>
);
}
renderAutoplayOverlay() {
const { intl } = this.props;
return (
<AutoplayOverlay
key={_.uniqueId('screenshareAutoplayOverlay')}
autoplayBlockedDesc={intl.formatMessage(intlMessages.autoplayBlockedDesc)}
autoplayAllowLabel={intl.formatMessage(intlMessages.autoplayAllowLabel)}
handleAllowAutoplay={this.handleAllowAutoplay}
/>
);
}
renderSwitchButton() {
const { switched } = this.state;
return (
<SwitchButtonContainer
handleSwitch={this.onSwitched}
switched={switched}
dark
/>
);
}
renderMobileVolumeControlOverlay () {
return (
<Styled.MobileControlsOverlay
key="mobile-overlay-screenshare"
ref={(ref) => { this.overlay = ref; }}
onTouchStart={() => {
clearTimeout(this.mobileHoverSetTimeout);
this.setState({ showHoverToolBar: true });
}}
onTouchEnd={() => {
this.mobileHoverSetTimeout = setTimeout(
() => this.setState({ showHoverToolBar: false }),
MOBILE_HOVER_TIMEOUT,
);
}}
/>
);
}
renderVolumeSlider() {
const { showHoverToolBar } = this.state;
let toolbarStyle = 'hoverToolbar';
if (deviceInfo.isMobile && !showHoverToolBar) {
toolbarStyle = 'dontShowMobileHoverToolbar';
}
if (deviceInfo.isMobile && showHoverToolBar) {
toolbarStyle = 'showMobileHoverToolbar';
}
return [(
<Styled.HoverToolbar
toolbarStyle={toolbarStyle}
key='hover-toolbar-screenshare'>
<VolumeSlider
volume={getVolume()}
muted={getVolume() === 0}
onVolumeChanged={this.handleOnVolumeChanged}
onMuted={this.handleOnMuted}
/>
</Styled.HoverToolbar>
),
(deviceInfo.isMobile) && this.renderMobileVolumeControlOverlay(),
];
}
renderVideo(switched) {
const { isGloballyBroadcasting } = this.props;
const { mediaFlowing } = this.state;
return (
<Styled.ScreenshareVideo
id={SCREENSHARE_MEDIA_ELEMENT_NAME}
key={SCREENSHARE_MEDIA_ELEMENT_NAME}
unhealthyStream={!isGloballyBroadcasting || !mediaFlowing}
style={switched
? { maxHeight: '100%', width: '100%', height: '100%' }
: { maxHeight: '25%', width: '25%', height: '25%' }}
playsInline
onLoadedData={this.onLoadedData}
onLoadedMetadata={this.onLoadedMetadata}
ref={(ref) => {
this.videoTag = ref;
}}
muted
/>
);
}
renderScreensharePresenter() {
const { switched } = this.state;
const { isGloballyBroadcasting, intl } = this.props;
return (
<Styled.ScreenshareContainer
switched={switched}
key="screenshareContainer"
ref={(ref) => { this.screenshareContainer = ref; }}
>
{isGloballyBroadcasting && this.renderSwitchButton()}
{this.renderVideo(switched)}
{
isGloballyBroadcasting
? (
<div data-test="isSharingScreen">
{!switched
&& ScreenshareComponent.renderScreenshareContainerInside(
intl.formatMessage(intlMessages.presenterSharingLabel),
)}
</div>
)
: ScreenshareComponent.renderScreenshareContainerInside(
intl.formatMessage(intlMessages.presenterLoadingLabel),
)
}
</Styled.ScreenshareContainer>
);
}
renderScreenshareDefault() {
const { intl, enableVolumeControl } = this.props;
const { loaded } = this.state;
return (
<Styled.ScreenshareContainer
switched
key="screenshareContainer"
ref={(ref) => {
this.screenshareContainer = ref;
}}
id="screenshareContainer"
>
{loaded && this.renderFullscreenButton()}
{this.renderVideo(true)}
{loaded && enableVolumeControl && this.renderVolumeSlider() }
<Styled.ScreenshareContainerDefault>
{
!loaded
? ScreenshareComponent.renderScreenshareContainerInside(
intl.formatMessage(intlMessages.viewerLoadingLabel),
)
: null
}
</Styled.ScreenshareContainerDefault>
</Styled.ScreenshareContainer>
);
}
render() {
const { loaded, autoplayBlocked, mediaFlowing} = this.state;
const {
isPresenter,
isGloballyBroadcasting,
top,
left,
right,
width,
height,
zIndex,
fullscreenContext,
} = this.props;
// Conditions to render the (re)connecting dots and the unhealthy stream
// grayscale:
// 1 - The local media tag has not received any stream data yet
// 2 - The user is a presenter and the stream wasn't globally broadcasted yet
// 3 - The media was loaded, the stream was globally broadcasted BUT the stream
// state transitioned to an unhealthy stream. tl;dr: screen sharing reconnection
const shouldRenderConnectingState = !loaded
|| (isPresenter && !isGloballyBroadcasting)
|| (!mediaFlowing && loaded && isGloballyBroadcasting);
const display = (width > 0 && height > 0) ? 'inherit' : 'none';
const { animations } = Settings.application;
return (
<div
style={
{
position: 'absolute',
display,
top,
left,
right,
height,
width,
zIndex: fullscreenContext ? zIndex : undefined,
backgroundColor: '#06172A',
}
}
>
{(shouldRenderConnectingState)
&& (
<Styled.SpinnerWrapper
key={_.uniqueId('screenshareArea-')}
data-test="screenshareConnecting"
>
<Styled.Spinner animations={animations}>
<Styled.Bounce1 animations={animations} />
<Styled.Bounce2 animations={animations} />
<div />
</Styled.Spinner>
</Styled.SpinnerWrapper>
)}
{autoplayBlocked ? this.renderAutoplayOverlay() : null}
{isPresenter ? this.renderScreensharePresenter() : this.renderScreenshareDefault()}
</div>
);
}
}
export default injectIntl(ScreenshareComponent);
ScreenshareComponent.propTypes = {
intl: PropTypes.shape({
formatMessage: PropTypes.func.isRequired,
}).isRequired,
isPresenter: PropTypes.bool.isRequired,
enableVolumeControl: PropTypes.bool.isRequired,
};