/
lobby_video.dart
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/
lobby_video.dart
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import 'dart:async';
import 'package:flutter/material.dart';
import '../../stream_video_flutter.dart';
import '../call_participants/participant_label.dart';
/// A widget that can be shown before joining a call. Measures latencies
/// and selects the best SFU. This speeds up the process of joining when
/// the user decides to enter the call.
class StreamLobbyVideo extends StatefulWidget {
/// Creates a new instance of [StreamLobbyView].
const StreamLobbyVideo({
super.key,
required this.call,
this.cardBackgroundColor,
this.userAvatarTheme,
this.onMicrophoneTrackSet,
this.onCameraTrackSet,
});
/// Represents a call.
final Call call;
/// The color of the focus border.
final Color? cardBackgroundColor;
/// Theme for the avatar.
final StreamUserAvatarThemeData? userAvatarTheme;
final FutureOr<void> Function(RtcLocalAudioTrack?)? onMicrophoneTrackSet;
final FutureOr<void> Function(RtcLocalCameraTrack?)? onCameraTrackSet;
@override
State<StreamLobbyVideo> createState() => _StreamLobbyVideoState();
}
class _StreamLobbyVideoState extends State<StreamLobbyVideo> {
late final _logger = taggedLogger(tag: 'SV:LobbyView');
RtcLocalAudioTrack? _microphoneTrack;
RtcLocalCameraTrack? _cameraTrack;
@override
void initState() {
super.initState();
Future.delayed(Duration.zero, () {
final callSettings = widget.call.state.value.settings;
if (callSettings.audio.micDefaultOn) {
toggleMicrophone();
}
if (callSettings.video.cameraDefaultOn) {
toggleCamera();
}
});
}
Future<void> toggleCamera() async {
if (_cameraTrack != null) {
await _cameraTrack?.stop();
await widget.onCameraTrackSet?.call(null);
return setState(() => _cameraTrack = null);
}
try {
final cameraTrack = await RtcLocalTrack.camera();
await widget.onCameraTrackSet?.call(cameraTrack);
return setState(() => _cameraTrack = cameraTrack);
} catch (e) {
_logger.w(() => 'Error creating camera track: $e');
}
}
Future<void> toggleMicrophone() async {
if (_microphoneTrack != null) {
await _microphoneTrack?.stop();
await widget.onMicrophoneTrackSet?.call(null);
return setState(() => _microphoneTrack = null);
}
try {
final microphoneTrack = await RtcLocalTrack.audio();
await widget.onMicrophoneTrackSet?.call(microphoneTrack);
return setState(() => _microphoneTrack = microphoneTrack);
} catch (e) {
_logger.w(() => 'Error creating microphone track: $e');
}
}
@override
Widget build(BuildContext context) {
final theme = StreamLobbyViewTheme.of(context);
final cardBackgroundColor =
widget.cardBackgroundColor ?? theme.cardBackgroundColor;
final userAvatarTheme = widget.userAvatarTheme ?? theme.userAvatarTheme;
final currentUser = StreamVideo.instance.currentUser;
final cameraEnabled = _cameraTrack != null;
final microphoneEnabled = _microphoneTrack != null;
return Column(
children: [
Container(
constraints: const BoxConstraints(maxWidth: 420),
height: 280,
child: ClipRRect(
borderRadius: BorderRadius.circular(16),
child: DecoratedBox(
decoration: BoxDecoration(color: cardBackgroundColor),
child: Builder(
builder: (context) {
Widget placeHolderBuilder(BuildContext context) {
return Center(
child: StreamUserAvatarTheme(
data: userAvatarTheme,
child: StreamUserAvatar(
user: currentUser,
),
),
);
}
return Stack(
children: [
if (cameraEnabled)
VideoTrackRenderer(
mirror: true,
videoTrack: _cameraTrack!,
placeholderBuilder: placeHolderBuilder,
)
else
placeHolderBuilder(context),
Align(
alignment: Alignment.bottomLeft,
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
StreamParticipantLabel(
isAudioEnabled: microphoneEnabled,
isSpeaking: false,
participantName: currentUser.name,
),
],
),
),
],
);
},
),
),
),
),
const SizedBox(height: 16),
Row(
children: [
CallControlOption(
icon: microphoneEnabled
? const Icon(Icons.mic_rounded)
: const Icon(Icons.mic_off_rounded),
iconColor: microphoneEnabled ? null : theme.optionOffIconColor,
backgroundColor:
microphoneEnabled ? null : theme.optionOffBackgroundColor,
onPressed: toggleMicrophone,
),
CallControlOption(
icon: cameraEnabled
? const Icon(Icons.videocam_rounded)
: const Icon(Icons.videocam_off_rounded),
iconColor: cameraEnabled ? null : theme.optionOffIconColor,
backgroundColor:
cameraEnabled ? null : theme.optionOffBackgroundColor,
onPressed: toggleCamera,
),
],
),
],
);
}
}