element-call/src/room/PTTCallView.tsx

/*
Copyright 2022 Matrix.org Foundation C.I.C.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

import React from "react";
import useMeasure from "react-use-measure";
import { ResizeObserver } from "@juggle/resize-observer";
import { GroupCall, MatrixClient, RoomMember } from "matrix-js-sdk";
import { CallFeed } from "matrix-js-sdk/src/webrtc/callFeed";

import { useModalTriggerState } from "../Modal";
import { SettingsModal } from "../settings/SettingsModal";
import { InviteModal } from "./InviteModal";
import { HangupButton, InviteButton, SettingsButton } from "../button";
import { Header, LeftNav, RightNav, RoomSetupHeaderInfo } from "../Header";
import styles from "./PTTCallView.module.css";
import { Facepile } from "../Facepile";
import { PTTButton } from "./PTTButton";
import { PTTFeed } from "./PTTFeed";
import { useMediaHandler } from "../settings/useMediaHandler";
import { usePTT } from "./usePTT";
import { Timer } from "./Timer";
import { Toggle } from "../input/Toggle";
import { getAvatarUrl } from "../matrix-utils";
import { ReactComponent as AudioIcon } from "../icons/Audio.svg";
import { usePTTSounds } from "../sound/usePttSounds";
import { PTTClips } from "../sound/PTTClips";

interface Props {
  client: MatrixClient;
  roomId: string;
  roomName: string;
  groupCall: GroupCall;
  participants: RoomMember[];
  userMediaFeeds: CallFeed[];
  onLeave: () => void;
  setShowInspector: (boolean) => void;
  showInspector: boolean;
}

export const PTTCallView: React.FC<Props> = ({
  client,
  roomId,
  roomName,
  groupCall,
  participants,
  userMediaFeeds,
  onLeave,
  setShowInspector,
  showInspector,
}) => {
  const { modalState: inviteModalState, modalProps: inviteModalProps } =
    useModalTriggerState();
  const { modalState: settingsModalState, modalProps: settingsModalProps } =
    useModalTriggerState();
  const [containerRef, bounds] = useMeasure({ polyfill: ResizeObserver });
  const facepileSize = bounds.width < 800 ? "sm" : "md";
  const pttButtonSize = 232;
  const pttBorderWidth = 6;

  const { audioOutput } = useMediaHandler();

  const { startTalkingLocalRef, startTalkingRemoteRef, blockedRef, playClip } =
    usePTTSounds();

  const {
    pttButtonHeld,
    isAdmin,
    talkOverEnabled,
    setTalkOverEnabled,
    activeSpeakerUserId,
    startTalking,
    stopTalking,
    transmitBlocked,
  } = usePTT(client, groupCall, userMediaFeeds, playClip);

  const showTalkOverError = pttButtonHeld && transmitBlocked;

  const activeSpeakerIsLocalUser =
    activeSpeakerUserId && client.getUserId() === activeSpeakerUserId;
  const activeSpeakerUser = activeSpeakerUserId
    ? client.getUser(activeSpeakerUserId)
    : null;
  const activeSpeakerAvatarUrl = activeSpeakerUser
    ? getAvatarUrl(
        client,
        activeSpeakerUser.avatarUrl,
        pttButtonSize - pttBorderWidth * 2
      )
    : null;
  const activeSpeakerDisplayName = activeSpeakerUser
    ? activeSpeakerUser.displayName
    : "";

  return (
    <div className={styles.pttCallView} ref={containerRef}>
      <PTTClips
        startTalkingLocalRef={startTalkingLocalRef}
        startTalkingRemoteRef={startTalkingRemoteRef}
        blockedRef={blockedRef}
      />
      <Header className={styles.header}>
        <LeftNav>
          <RoomSetupHeaderInfo roomName={roomName} onPress={onLeave} />
        </LeftNav>
        <RightNav />
      </Header>
      <div className={styles.center}>
        <div className={styles.participants}>
          <p>{`${participants.length} ${
            participants.length > 1 ? "people" : "person"
          } connected`}</p>
          <Facepile
            size={facepileSize}
            max={8}
            className={styles.facepile}
            client={client}
            participants={participants}
          />
        </div>
        <div className={styles.footer}>
          <SettingsButton onPress={() => settingsModalState.open()} />
          <HangupButton onPress={onLeave} />
          <InviteButton onPress={() => inviteModalState.open()} />
        </div>

        <div className={styles.pttButtonContainer}>
          {activeSpeakerUserId ? (
            <div className={styles.talkingInfo}>
              <h2>
                {!activeSpeakerIsLocalUser && (
                  <AudioIcon className={styles.speakerIcon} />
                )}
                {activeSpeakerIsLocalUser
                  ? "Talking..."
                  : `${activeSpeakerDisplayName} is talking...`}
              </h2>
              <Timer value={activeSpeakerUserId} />
            </div>
          ) : (
            <div className={styles.talkingInfo} />
          )}
          <PTTButton
            showTalkOverError={showTalkOverError}
            activeSpeakerUserId={activeSpeakerUserId}
            activeSpeakerDisplayName={activeSpeakerDisplayName}
            activeSpeakerAvatarUrl={activeSpeakerAvatarUrl}
            activeSpeakerIsLocalUser={activeSpeakerIsLocalUser}
            size={pttButtonSize}
            startTalking={startTalking}
            stopTalking={stopTalking}
          />
          <p className={styles.actionTip}>
            {showTalkOverError
              ? "You can't talk at the same time"
              : pttButtonHeld && activeSpeakerIsLocalUser
              ? "Release spacebar key to stop"
              : talkOverEnabled &&
                activeSpeakerUserId &&
                !activeSpeakerIsLocalUser
              ? `Press and hold spacebar to talk over ${activeSpeakerDisplayName}`
              : "Press and hold spacebar to talk"}
          </p>
          {userMediaFeeds.map((callFeed) => (
            <PTTFeed
              key={callFeed.userId}
              callFeed={callFeed}
              audioOutputDevice={audioOutput}
            />
          ))}
          {isAdmin && (
            <Toggle
              isSelected={talkOverEnabled}
              onChange={setTalkOverEnabled}
              label="Talk over speaker"
              id="talkOverEnabled"
            />
          )}
        </div>
      </div>

      {settingsModalState.isOpen && (
        <SettingsModal
          {...settingsModalProps}
          setShowInspector={setShowInspector}
          showInspector={showInspector}
        />
      )}
      {inviteModalState.isOpen && (
        <InviteModal roomId={roomId} {...inviteModalProps} />
      )}
    </div>
  );
};