Speech.cs

using BabySmash.Properties;
using System;
using System.Diagnostics;
using System.Globalization;
using System.Linq;
using System.Speech.Synthesis;
using System.Threading;
using System.Windows.Forms;

namespace BabySmash
{
    public static class Speech
    {
        public static void Speak(string s)
        {
            if (Settings.Default.Sounds != "None")
            {
                ThreadedSpeak ts = new ThreadedSpeak(s);
                ts.Speak();
            }
        }

        private class ThreadedSpeak
        {
            private string Word = null;
            SpeechSynthesizer SpeechSynth = new SpeechSynthesizer();
            public ThreadedSpeak(string Word)
            {
                this.Word = Word;
                CultureInfo keyboardLanguage = InputLanguage.CurrentInputLanguage.Culture;
                InstalledVoice neededVoice = this.SpeechSynth.GetInstalledVoices(keyboardLanguage).FirstOrDefault();
                if (neededVoice == null)
                {
                    //http://superuser.com/questions/590779/how-to-install-more-voices-to-windows-speech
                    //https://msdn.microsoft.com/en-us/library/windows.media.speechsynthesis.speechsynthesizer.voice.aspx
                    //http://stackoverflow.com/questions/34776593/speechsynthesizer-selectvoice-fails-with-no-matching-voice-is-installed-or-th
                    this.Word = "Unsupported Language";
                }
                else if (!neededVoice.Enabled)
                {
                    this.Word = "Voice Disabled";
                }
                else
                {
                    try
                    {
                        this.SpeechSynth.SelectVoice(neededVoice.VoiceInfo.Name);
                    }
                    catch (Exception ex)
                    {
                        Debug.Assert(false, ex.ToString());
                    }
                }

                SpeechSynth.Rate = -1;
                SpeechSynth.Volume = 100;
            }
            public void Speak()
            {
                Thread oThread = new Thread(new ThreadStart(this.Start));
                oThread.Start();
            }
            private void Start()
            {
                try
                {
                    SpeechSynth.Speak(Word);
                }
                catch (Exception e)
                {
                    Trace.WriteLine(e.ToString());
                }
            }
        }
    }
}