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/**
* @copyright Copyright (c) 2020 Marco Ambrosini <marcoambrosini@pm.me>
*
* @author Marco Ambrosini <marcoambrosini@pm.me>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
import Vue from 'vue'
import BrowserStorage from '../services/BrowserStorage'
import {
CONVERSATION,
} from '../constants'
const state = {
isGrid: false,
isStripeOpen: true,
lastIsGrid: null,
lastIsStripeOpen: null,
presentationStarted: false,
selectedVideoPeerId: null,
videoBackgroundBlur: 1,
participantRaisedHands: {},
}
const getters = {
isGrid: (state) => state.isGrid,
isStripeOpen: (state) => state.isStripeOpen,
lastIsGrid: (state) => state.lastIsGrid,
lastIsStripeOpen: (state) => state.lastIsStripeOpen,
presentationStarted: (state) => state.presentationStarted,
selectedVideoPeerId: (state) => {
return state.selectedVideoPeerId
},
/**
* @param {object} state the width and height to calculate the radius from
* @returns {number} the blur radius to use, in pixels
*/
getBlurRadius: (state) => (width, height) => {
return (width * height * state.videoBackgroundBlur) / 1000
},
getParticipantRaisedHand: (state) => (sessionId) => {
return state.participantRaisedHands[sessionId] || { state: false, timestamp: null }
},
isParticipantRaisedHand: (state) => (sessionId) => {
return state.participantRaisedHands[sessionId]?.state
},
}
const mutations = {
isGrid(state, value) {
state.isGrid = value
},
isStripeOpen(state, value) {
state.isStripeOpen = value
},
lastIsGrid(state, value) {
state.lastIsGrid = value
},
lastIsStripeOpen(state, value) {
state.lastIsStripeOpen = value
},
selectedVideoPeerId(state, value) {
state.selectedVideoPeerId = value
},
presentationStarted(state, value) {
state.presentationStarted = value
},
setParticipantHandRaised(state, { sessionId, raisedHand }) {
if (!sessionId) {
throw new Error('Missing or empty sessionId argument in call to setParticipantHandRaised')
}
if (raisedHand && raisedHand.state) {
Vue.set(state.participantRaisedHands, sessionId, raisedHand)
} else {
Vue.delete(state.participantRaisedHands, sessionId)
}
},
clearParticipantHandRaised(state) {
state.participantRaisedHands = {}
},
}
const actions = {
selectedVideoPeerId(context, value) {
context.commit('selectedVideoPeerId', value)
},
joinCall(context, { token }) {
let isGrid = BrowserStorage.getItem('callprefs-' + token + '-isgrid')
if (isGrid === null) {
const conversationType = context.getters.conversations[token].type
// default to grid view for group/public calls, otherwise speaker view
isGrid = (conversationType === CONVERSATION.TYPE.GROUP
|| conversationType === CONVERSATION.TYPE.PUBLIC)
} else {
// BrowserStorage.getItem returns a string instead of a boolean
isGrid = (isGrid === 'true')
}
context.dispatch('setCallViewMode', { isGrid: isGrid, isStripeOpen: true })
},
leaveCall(context) {
// clear raised hands as they were specific to the call
context.commit('clearParticipantHandRaised')
},
/**
* Sets the current call view mode and saves it in preferences.
* If clearLast is false, also remembers it in separate properties.
*
* @param {object} context default store context;
* @param {bool} isGrid=null true for enabled grid mode, false for speaker view;
* @param {bool} isStripeOpen=null true for visible stripel mode, false for speaker view;
* @param {bool} clearLast=true set to false to not reset last temporary remembered state;
*/
setCallViewMode(context, { isGrid = null, isStripeOpen = null, clearLast = true }) {
if (clearLast) {
context.commit('lastIsGrid', null)
context.commit('lastIsStripeOpen', null)
} else {
context.commit('lastIsGrid', context.getters.isGrid)
context.commit('lastIsStripeOpen', context.getters.isStripeOpen)
}
if (isGrid !== null) {
BrowserStorage.setItem('callprefs-' + context.getters.getToken() + '-isgrid', isGrid)
context.commit('isGrid', isGrid)
}
if (isStripeOpen !== null) {
context.commit('isStripeOpen', isStripeOpen)
}
},
setParticipantHandRaised(context, { sessionId, raisedHand }) {
context.commit('setParticipantHandRaised', { sessionId, raisedHand })
},
/**
* Starts presentation mode.
*
* Switches off grid mode and closes the stripe.
* Remembers the call view state for after the end of the presentation.
*
* @param {object} context default store context;
*/
startPresentation(context) {
// don't start twice, this would prevent multiple
// screen shares to clear the last call view state
if (context.getters.presentationStarted) {
return
}
context.commit('presentationStarted', true)
// switch off grid mode during presentation and collapse
// the stripe to focus on the screen share, but continue remembering
// the last state
context.dispatch('setCallViewMode', {
isGrid: false,
isStripeOpen: false,
clearLast: false,
})
},
/**
* Stops presentation mode.
*
* Restores call view state from before starting the presentation, given
* that the last state was not cleared manually.
*
* @param {object} context default store context;
*/
stopPresentation(context) {
if (!context.getters.presentationStarted) {
return
}
// restore previous state
context.dispatch('setCallViewMode', {
isGrid: context.getters.lastIsGrid,
isStripeOpen: context.getters.lastIsStripeOpen,
})
context.commit('presentationStarted', false)
},
}
export default { state, mutations, getters, actions }
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