cloudsolutions-atoms/lib/views/widgets/speech_to_text/speech_to_text.dart

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';
import 'package:provider/provider.dart';
import 'package:speech_to_text/speech_recognition_error.dart';
import 'package:speech_to_text/speech_recognition_result.dart';
import 'package:speech_to_text/speech_to_text.dart';
import 'package:test_sa/controllers/providers/settings/setting_provider.dart';
import 'package:test_sa/views/app_style/sizing.dart';
import 'package:test_sa/views/widgets/buttons/app_icon_button2.dart';
import 'package:test_sa/views/widgets/titles/app_sub_title.dart';

class SpeechToTextButton extends StatefulWidget {
  final TextEditingController controller;
  final bool mini;

  const SpeechToTextButton({Key key, this.controller, this.mini = false}) : super(key: key);

  @override
  _SpeechToTextButtonState createState() => _SpeechToTextButtonState();
}

class _SpeechToTextButtonState extends State<SpeechToTextButton> {
  bool _speechEnabled = false;
  SettingProvider _settingProvider;
  SpeechToText _speechToText = SpeechToText();

  /// This has to happen only once per app
  void _initSpeech() async {
    _speechEnabled = await _speechToText.initialize(
      onError: (SpeechRecognitionError error) async {
        Fluttertoast.showToast(msg: "failed to convert text to speech");
        setState(() {});
      },
    );
  }

  /// Each time to start a speech recognition session
  void _startListening() async {
    _speechEnabled = _speechToText.isAvailable;
    if (_speechToText.isListening) {
      Fluttertoast.showToast(msg: "Currently in use");
      return;
    }
    if (!_speechEnabled) return;
    await _speechToText.listen(
        onResult: (SpeechRecognitionResult result) {
          widget.controller.text = result.recognizedWords;
          setState(() {});
        },
        localeId: _settingProvider.speechToText);
    setState(() {});
  }

  /// Manually stop the active speech recognition session
  /// Note that there are also timeouts that each platform enforces
  /// and the SpeechToText plugin supports setting timeouts on the
  /// listen method.
  void _stopListening() async {
    await _speechToText.stop();
    setState(() {});
  }

  @override
  void initState() {
    _initSpeech();
    super.initState();
  }

  @override
  void setState(VoidCallback fn) {
    if (!this.mounted) return;
    super.setState(fn);
  }

  @override
  Widget build(BuildContext context) {
    _settingProvider = Provider.of<SettingProvider>(context);
    return Container(
      padding: EdgeInsets.only(left: 12, right: 12),
      decoration: BoxDecoration(
        color: Color(0xfff5f5f5),
        border: Border.all(
          color: Color(0xffefefef),
        ),
        borderRadius: BorderRadius.circular(AppStyle.borderRadius * AppStyle.getScaleFactor(context)),
      ),
      child: Row(
        children: [
          widget.mini ? SizedBox.shrink() : ASubTitle("Text To Speech"),
          widget.controller.text.isNotEmpty
              ? AIconButton2(
                  iconData: Icons.delete,
                  onPressed: () {
                    widget.controller.clear();
                    setState(() {});
                  },
                )
              : SizedBox.shrink(),
          Spacer(),
          TextButton(
              onPressed: () {
                if (_speechToText.isListening) return;

                if (_settingProvider.speechToText == "ar") {
                  _settingProvider.setSpeechToText("en");
                } else {
                  _settingProvider.setSpeechToText("ar");
                }
              },
              child: Text(_settingProvider.speechToText)),
          GestureDetector(
            child: _speechToText.isListening
                ? Icon(
                    Icons.fiber_manual_record,
                    color: Colors.red,
                  )
                : Icon(
                    Icons.mic,
                    color: Theme.of(context).colorScheme.primary,
                  ),
            onTap: () async {
              if (!_speechEnabled) {
                Fluttertoast.showToast(msg: "microphone not available");
                return;
              }
              _startListening();
            },
          ),
        ],
      ),
    );
  }
}