using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Speech.Recognition;
using System.Text;

namespace Lskj.Util
{
    /// <summary>
    /// 语音操作类
    /// </summary>
    public sealed class SpeechHelp
    {
        private string Text;
        private SpeechRecognitionEngine recognizer;
        private DictationGrammar dictationGrammar;

        private void button1_Click(object sender, EventArgs e)
        {
            recognizer.RecognizeAsync(RecognizeMode.Multiple);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            recognizer.RecognizeAsyncStop();
        }

        public void SRecognition(string[] fg, int i) //创建关键词语列表  
        {
            CultureInfo myCIintl = new CultureInfo("zh-CN");
            foreach (RecognizerInfo config in SpeechRecognitionEngine.InstalledRecognizers())//获取所有语音引擎  
            {
                Console.WriteLine(config.Culture.EnglishName);
                if (config.Culture.Equals(myCIintl))
                {
                    recognizer = new SpeechRecognitionEngine(config);
                    break;
                }//选择识别引擎
            }
            if (recognizer != null)
            {
                InitializeSpeechRecognitionEngine(fg);//初始化语音识别引擎  
                dictationGrammar = new DictationGrammar();
            }
        }

        void InitializeSpeechRecognitionEngine(string[] s)
        {
            // Create and load a dictation grammar.
            //recognizer.LoadGrammar(new DictationGrammar());

            // Configure input to the speech recognizer.
            recognizer.SetInputToDefaultAudioDevice();

            // Modify the initial silence time-out value.
            recognizer.InitialSilenceTimeout = TimeSpan.FromSeconds(5);

            GrammarBuilder GB = new GrammarBuilder();
            GB.Append("选择");
            GB.Append(new Choices(new string[] { "红色", "绿色" }));
            Grammar G = new Grammar(GB);
            Console.WriteLine(G.RuleName);
            G.SpeechRecognized += new EventHandler<SpeechRecognizedEventArgs>(G_SpeechRecognized);
            recognizer.LoadGrammar(G);
        }

        /// <summary>
        /// 语音操作erp数据
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void G_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
        {
            Text = e.Result.Text;
            switch (e.Result.Text)
            {
                //case "选择红色":
                //    BackColor = Color.Red;
                //    button2.BackColor = BackColor;
                //    break;
                //case "选择绿色":
                //    BackColor = Color.Green;
                //    button2.BackColor = BackColor;
                //    break;
            }
        }
    }
}