jiti-meet/react/features/filmstrip/subscriber.web.js

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// @flow
2020-05-20 10:57:03 +00:00
import { StateListenerRegistry, equals } from '../base/redux';
import { clientResized } from '../base/responsive-ui';
import { setFilmstripVisible } from '../filmstrip/actions';
import { getParticipantsPaneOpen } from '../participants-pane/functions';
import { setOverflowDrawer } from '../toolbox/actions.web';
import { getCurrentLayout, getTileViewGridDimensions, shouldDisplayTileView, LAYOUTS } from '../video-layout';
import { setHorizontalViewDimensions, setTileViewDimensions } from './actions.web';
import {
ASPECT_RATIO_BREAKPOINT,
DISPLAY_DRAWER_THRESHOLD,
SINGLE_COLUMN_BREAKPOINT,
TWO_COLUMN_BREAKPOINT
} from './constants';
/**
* Listens for changes in the number of participants to calculate the dimensions of the tile view grid and the tiles.
*/
StateListenerRegistry.register(
/* selector */ state => state['features/base/participants'].length,
/* listener */ (numberOfParticipants, store) => {
const state = store.getState();
if (shouldDisplayTileView(state)) {
const gridDimensions = getTileViewGridDimensions(state);
const oldGridDimensions = state['features/filmstrip'].tileViewDimensions.gridDimensions;
if (!equals(gridDimensions, oldGridDimensions)) {
const { clientHeight, clientWidth } = state['features/base/responsive-ui'];
store.dispatch(
setTileViewDimensions(
gridDimensions,
{
clientHeight,
clientWidth
},
store
)
);
}
}
});
/**
* Listens for changes in the selected layout to calculate the dimensions of the tile view grid and horizontal view.
*/
StateListenerRegistry.register(
/* selector */ state => getCurrentLayout(state),
/* listener */ (layout, store) => {
const state = store.getState();
switch (layout) {
case LAYOUTS.TILE_VIEW: {
const { clientHeight, clientWidth } = state['features/base/responsive-ui'];
store.dispatch(
setTileViewDimensions(
getTileViewGridDimensions(state),
{
clientHeight,
clientWidth
},
store
)
);
break;
}
case LAYOUTS.HORIZONTAL_FILMSTRIP_VIEW:
store.dispatch(setHorizontalViewDimensions(state['features/base/responsive-ui'].clientHeight));
break;
}
});
/**
* Listens for changes in the chat state to recompute available width.
*/
StateListenerRegistry.register(
/* selector */ state => state['features/chat'].isOpen,
/* listener */ (isChatOpen, store) => {
const { innerWidth, innerHeight } = window;
if (isChatOpen) {
// $FlowFixMe
document.body.classList.add('shift-right');
} else {
// $FlowFixMe
document.body.classList.remove('shift-right');
}
store.dispatch(clientResized(innerWidth, innerHeight));
});
/**
* Listens for changes in the participant pane state to calculate the
* dimensions of the tile view grid and the tiles.
*/
StateListenerRegistry.register(
/* selector */ getParticipantsPaneOpen,
/* listener */ (isOpen, store) => {
const { innerWidth, innerHeight } = window;
store.dispatch(clientResized(innerWidth, innerHeight));
});
/**
* Listens for changes in the client width to determine whether the overflow menu(s) should be displayed as drawers.
*/
StateListenerRegistry.register(
/* selector */ state => state['features/base/responsive-ui'].clientWidth < DISPLAY_DRAWER_THRESHOLD,
/* listener */ (widthBelowThreshold, store) => {
store.dispatch(setOverflowDrawer(widthBelowThreshold));
});
/**
* Gracefully hide/show the filmstrip when going past threshold.
*/
StateListenerRegistry.register(
/* selector */ state => state['features/base/responsive-ui'].clientWidth < ASPECT_RATIO_BREAKPOINT,
/* listener */ (widthBelowThreshold, store) => {
store.dispatch(setFilmstripVisible(!widthBelowThreshold));
});
/**
* Symbol mapping used for the tile view responsiveness computation.
*/
const responsiveColumnMapping = {
multipleColumns: Symbol('multipleColumns'),
singleColumn: Symbol('singleColumn'),
twoColumns: Symbol('twoColumns'),
twoParticipantsSingleColumn: Symbol('twoParticipantsSingleColumn')
};
/**
* Listens for changes in the screen size to recompute
* the dimensions of the tile view grid and the tiles for responsiveness.
*/
StateListenerRegistry.register(
/* selector */ state => {
const { clientWidth } = state['features/base/responsive-ui'];
if (clientWidth < TWO_COLUMN_BREAKPOINT && clientWidth >= ASPECT_RATIO_BREAKPOINT) {
// Forcing the recomputation of tiles when screen switches in or out of
// the (TWO_COLUMN_BREAKPOINT, ASPECT_RATIO_BREAKPOINT] interval.
return responsiveColumnMapping.twoColumns;
} else if (clientWidth < ASPECT_RATIO_BREAKPOINT && clientWidth >= SINGLE_COLUMN_BREAKPOINT) {
// Forcing the recomputation of tiles when screen switches in or out of
// the (ASPECT_RATIO_BREAKPOINT, SINGLE_COLUMN_BREAKPOINT] interval.
return responsiveColumnMapping.twoParticipantsSingleColumn;
} else if (clientWidth < SINGLE_COLUMN_BREAKPOINT) {
// Forcing the recomputation of tiles when screen switches below SINGLE_COLUMN_BREAKPOINT.
return responsiveColumnMapping.singleColumn;
}
// Forcing the recomputation of tiles when screen switches above TWO_COLUMN_BREAKPOINT.
return responsiveColumnMapping.multipleColumns;
},
/* listener */ (_, store) => {
const state = store.getState();
if (shouldDisplayTileView(state)) {
const gridDimensions = getTileViewGridDimensions(state);
const { clientHeight, clientWidth } = state['features/base/responsive-ui'];
store.dispatch(
setTileViewDimensions(
gridDimensions,
{
clientHeight,
clientWidth
},
store
)
);
}
});