using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Text.RegularExpressions;

namespace UAS_PRINT
{
    class PrintHelper
    {
      
        // 结构和API declarions
        [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
        public class DOCINFOA
        {
            [MarshalAs(UnmanagedType.LPStr)]
            public string pDocName;
            [MarshalAs(UnmanagedType.LPStr)]
            public string pOutputFile;
            [MarshalAs(UnmanagedType.LPStr)]
            public string pDataType;
        }
        [DllImport("winspool.Drv", EntryPoint = "OpenPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPStr)] string szPrinter, out IntPtr hPrinter, IntPtr pd);

        [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool ClosePrinter(IntPtr hPrinter);

        [DllImport("winspool.Drv", EntryPoint = "StartDocPrinterA", SetLastError = true, CharSet = CharSet.Ansi, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool StartDocPrinter(IntPtr hPrinter, Int32 level, [In, MarshalAs(UnmanagedType.LPStruct)] DOCINFOA di);

        [DllImport("winspool.Drv", EntryPoint = "EndDocPrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool EndDocPrinter(IntPtr hPrinter);

        [DllImport("winspool.Drv", EntryPoint = "StartPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool StartPagePrinter(IntPtr hPrinter);

        [DllImport("winspool.Drv", EntryPoint = "EndPagePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool EndPagePrinter(IntPtr hPrinter);

        [DllImport("winspool.Drv", EntryPoint = "WritePrinter", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern bool WritePrinter(IntPtr hPrinter, IntPtr pBytes, Int32 dwCount, out Int32 dwWritten);

        // SendBytesToPrinter()
        //当函数是给定一个打印机名称和一个非托管数组
        // 如果执行成功,将返回true;如果执行失败将返回false
        public static bool SendBytesToPrinter(string szPrinterName, IntPtr pBytes, Int32 dwCount)
        {
            Int32 dwError = 0, dwWritten = 0;
            IntPtr hPrinter = new IntPtr(0);
            DOCINFOA di = new DOCINFOA();
            bool bSuccess = false; // 假设失败.

            di.pDocName = "My C#.NET RAW Document";
            di.pDataType = "RAW";

            // 打开打印机
            if (OpenPrinter(szPrinterName.Normalize(), out hPrinter, IntPtr.Zero))
            {
                // 开始一个文档.
                if (StartDocPrinter(hPrinter, 1, di))
                {
                    // 创建新页面
                    if (StartPagePrinter(hPrinter))
                    {
                        // 写你的字节
                        bSuccess = WritePrinter(hPrinter, pBytes, dwCount, out dwWritten);
                        EndPagePrinter(hPrinter);
                    }
                    EndDocPrinter(hPrinter);
                }
                ClosePrinter(hPrinter);
            }
            // 如果没有成功,可能会给更多的信息GetLastError 
            if (bSuccess == false)
            {
                dwError = Marshal.GetLastWin32Error();
            }
            return bSuccess;
        }

        public static bool SendFileToPrinter(string szPrinterName, string szFileName)
        {
            // 打开文件.
            FileStream fs = new FileStream(szFileName, FileMode.Open);
            // 创建一个主题的文件.
            BinaryReader br = new BinaryReader(fs);
            // .
            Byte[] bytes = new Byte[fs.Length];
            bool bSuccess = false;
            // 非托管指针
            IntPtr pUnmanagedBytes = new IntPtr(0);
            int nLength;
            nLength = Convert.ToInt32(fs.Length);
            // 读取文件的内容放入数组中.
            bytes = br.ReadBytes(nLength);
            // 分配一些非托管内存对于那些字节
            pUnmanagedBytes = Marshal.AllocCoTaskMem(nLength);
            // 复制管理到非托管数组的字节数组
            Marshal.Copy(bytes, 0, pUnmanagedBytes, nLength);
            // 发送到打印机的非托管的字节
            bSuccess = SendBytesToPrinter(szPrinterName, pUnmanagedBytes, nLength);
            // 非托管内存分配
            Marshal.FreeCoTaskMem(pUnmanagedBytes);
            return bSuccess;
        }

        public static bool SendStringToPrinter(string szPrinterName, string szString)
        {
            IntPtr pBytes;
            Int32 dwCount;
            // 有多少字符在字符串
            dwCount = szString.Length;
            // 假设打印机期待ANSI的文本,然后将字符串ANSI文本。
            pBytes = Marshal.StringToCoTaskMemAnsi(szString);
            // 转换后的字符串发送到打印机的ANSI
            SendBytesToPrinter(szPrinterName, pBytes, dwCount);
            Marshal.FreeCoTaskMem(pBytes);
            return true;
        }

        //图片添加文字
        public static void Printstring(string str, int size, Graphics g, double x, double y)
        {
            //g.SmoothingMode = SmoothingMode.AntiAlias; //使绘图质量最高，即消除锯齿
            //g.InterpolationMode = InterpolationMode.HighQualityBilinear;
            //g.CompositingQuality = CompositingQuality.HighQuality;
            g.CompositingQuality = CompositingQuality.HighQuality;
            g.SmoothingMode = SmoothingMode.AntiAlias;
            g.InterpolationMode = InterpolationMode.HighQualityBicubic;
            g.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
            g.PixelOffsetMode = PixelOffsetMode.Half;
            //Font font = new Font(new FontFamily("宋体"), (float)(siez*1.3), FontStyle.Regular);
            Font font = new Font(new FontFamily("微软雅黑"), (float)(size*1.2), FontStyle.Regular, GraphicsUnit.Point);
            g.DrawString(str, font, Brushes.Black, new PointF((float)x * 4, (float)y * 4));
        }

        /// <summary>
        /// 调用此函数后使此两种图片合并，类似相册，有个
        /// 背景图，中间贴自己的目标图片
        /// </summary>
        /// <param name="imgBack">粘贴的源图片</param>
        /// <param name="img">粘贴的目标图片</param>
        public static Image CombinImage(Image imgBack, Image img, float x, float y)
        {      //照片图片
               //从指定的System.Drawing.Image创建新的System.Drawing.Graphics       
            Graphics g = Graphics.FromImage(imgBack);
            g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
            g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
            g.PixelOffsetMode = PixelOffsetMode.Half;
            //g.DrawImage(imgBack, 0, 0, 148, 124);      // g.DrawImage(imgBack, 0, 0, 相框宽, 相框高);
            //g.FillRectangle(System.Drawing.Brushes.Black, -50, -50, (int)212, ((int)203));//相片四周刷一层黑色边框，这里没有，需要调尺寸
            //g.DrawImage(img, 照片与相框的左边距, 照片与相框的上边距, 照片宽, 照片高);
            g.DrawImage(img,5, y * 4, img.Width, img.Height);
            g.Save();
            g.Dispose();
            return imgBack;
        }


        public static Dictionary<string, object> ToDictionary(string JsonData)
        {
            object Data = null;
            Dictionary<string, object> Dic = new Dictionary<string, object>();
            if (JsonData.StartsWith("["))
            {
                //如果目标直接就为数组类型，则将会直接输出一个Key为List的List<Dictionary<string, object>>集合 
                //使用示例List<Dictionary<string, object>> ListDic = (List<Dictionary<string, object>>)Dic["List"]; 
                List<Dictionary<string, object>> List = new List<Dictionary<string, object>>();
                MatchCollection ListMatch = Regex.Matches(JsonData, @"{[\s\S]+?}");//使用正则表达式匹配出JSON数组 
                foreach (Match ListItem in ListMatch)
                {
                    List.Add(ToDictionary(ListItem.ToString()));//递归调用 
                }
                Data = List;
                Dic.Add("List", Data);
            }
            else
            {
                MatchCollection Match = Regex.Matches(JsonData, @"""(.+?)"": {0,1}(\[[\s\S]+?\}\s*\]|null|"".+?""(,+?)|"".+?""(\s*?)(\}+?)|-{0,1}\d*)");//使用正则表达式匹配出JSON数据中的键与值 

                foreach (Match item in Match)
                {
                    try
                    {
                        if (item.Groups[2].ToString().StartsWith("["))
                        {
                            //如果目标是数组，将会输出一个Key为当前Json的List<Dictionary<string, object>>集合 
                            //使用示例List<Dictionary<string, object>> ListDic = (List<Dictionary<string, object>>)Dic["Json中的Key"]; 
                            List<Dictionary<string, object>> List = new List<Dictionary<string, object>>();
                            MatchCollection ListMatch = Regex.Matches(item.Groups[2].ToString(), @"{[\s\S]+?}");//使用正则表达式匹配出JSON数组 
                            foreach (Match ListItem in ListMatch)
                            {
                                List.Add(ToDictionary(ListItem.ToString()));//递归调用 
                            }
                            Data = List;
                        }
                        else if (item.Groups[2].ToString().ToLower() == "null") Data = null;//如果数据为null(字符串类型),直接转换成null
                        else if (item.Groups[2].ToString().EndsWith(","))
                            Data = item.Groups[2].ToString().Remove(item.Groups[2].ToString().Length - 1); //数据为数字、字符串中的一类，则去掉,直接写入 
                        else if (item.Groups[2].ToString().EndsWith("}"))
                            Data = item.Groups[2].ToString().Remove(item.Groups[2].ToString().Length - 1); //数据为数字、字符串中的一类，则去掉,直接写入 
                        else
                            Data = item.Groups[2].ToString();
                        Dic.Add(item.Groups[1].ToString(), Data);
                    }
                    catch { }
                }
            }
            return Dic;
        }
    }
}