using OpenCvSharp;
using PaintDotNet.Base.Enum;
using PaintDotNet.Base.SettingModel;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.Serialization.Formatters.Binary;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Xml.Serialization;

namespace PaintDotNet.Base.CommTool
{
    /// <summary>
    /// 绘制标尺
    /// </summary>
    public class DrawRulerHelper
    {
        /// <summary>
        /// 绘制标尺
        /// </summary>
        /// <param name="rulerModel">标尺配置类</param>
        /// <param name="graphics">画布</param>
        /// <param name="center">中心点</param>
        /// <param name="lineLength">标尺长度</param>
        /// <param name="text">标尺显示文字</param>
        public static void drawRuler(RulerModel rulerModel, Graphics graphics, PointF center, int lineLength, String text, out RectangleF borderPenRectangle)
        {

            Pen linePen = new Pen(Color.FromArgb(rulerModel.lineColor));
            Pen borderPen = new Pen(Color.FromArgb(rulerModel.borderColor));

            // 标尺线段
            PointF lineL = new PointF(center.X - lineLength / 2, center.Y);
            PointF lineR = new PointF(center.X + lineLength / 2, center.Y);
            linePen.Width = (int)rulerModel.lineWidth;
            int lineWidthOffset = (int)rulerModel.lineWidth / 2 - 1;

            // 垂线
            decimal verticalLength = lineLength * rulerModel.verticalLineLength / 100;
            PointF verticalLT = new PointF(lineL.X, lineL.Y - (int)(verticalLength / 2));
            PointF verticalLB = new PointF(lineL.X, lineL.Y + (int)(verticalLength / 2));
            PointF verticalRT = new PointF(lineR.X, lineR.Y - (int)(verticalLength / 2));
            PointF verticalRB = new PointF(lineR.X, lineR.Y + (int)(verticalLength / 2));

            // 文字
            Font textFont;
            decimal textHeight = lineLength * rulerModel.textHeight / 100;
            if (rulerModel.textBold == 0)
                textFont = new Font(rulerModel.textFont, (float)rulerModel.textFontSize,FontStyle.Regular);
            else
                textFont = new Font(rulerModel.textFont, (float)rulerModel.textFontSize, FontStyle.Bold);


            float textSizes = textFont.SizeInPoints * text.Length;
            float textX = lineL.X;
            if (rulerModel.textPosition == 1)
            {
                textX = (lineR.X - lineL.X) / 2 - (int)(textSizes / 2) + lineL.X;
            }
            else if (rulerModel.textPosition == 2)
            {
                textX = lineR.X - (int)(textSizes);
            }

            PointF textLT = new PointF(textX, lineL.Y - lineWidthOffset - (int)(textHeight + new Decimal(textFont.Height)));

            // 背景参照Y坐标，垂线高，使用垂线Y值，文字高使用文字Y值。
            float backRectangleReferY = textLT.Y < verticalLT.Y - 2 ? textLT.Y : verticalLT.Y -2;

            // 背景大小
            decimal backLength = lineLength * rulerModel.backgroundSize / 100;
            float backRectangleX = verticalLT.X - (int)backLength - (int)linePen.Width;
            float backRectangleY = backRectangleReferY - (int)(backLength);
            float backRectangleW = (verticalRT.X - verticalLT.X) + (int)(backLength * 2) + (int)(linePen.Width * 2);
            float backRectangleH = (verticalLB.Y - backRectangleReferY) + (int)(backLength * 2) + lineWidthOffset + 2;

            RectangleF backRectangle = new RectangleF(backRectangleX, backRectangleY, backRectangleW, backRectangleH);

            // 边框
            borderPen.Width = (int)rulerModel.borderWidth;
            int offset = borderPen.Width>0?(int)(borderPen.Width / 2) - 2:0;
            borderPenRectangle = new RectangleF(backRectangle.X - offset, backRectangle.Y - offset, backRectangle.Width + offset * 2, backRectangle.Height + offset * 2);

            // 计算中心Y轴偏移量


            // 绘制
            graphics.FillRectangle(new SolidBrush(Color.FromArgb(rulerModel.backColor)), backRectangle);
            graphics.DrawRectangle(borderPen, borderPenRectangle.X, borderPenRectangle.Y, borderPenRectangle.Width, borderPenRectangle.Height);
            graphics.DrawLine(linePen, lineL, lineR);
            graphics.DrawLine(linePen, verticalLT, verticalLB);
            graphics.DrawLine(linePen, verticalRT, verticalRB);
            graphics.DrawString(text, textFont, new SolidBrush(Color.FromArgb(rulerModel.textColor)), textLT.X, textLT.Y);
        }

        /// <summary>
        /// 绘制网格
        /// </summary>
        /// <param name="rulerModel"></param>
        /// <param name="graphics"></param>
        public static void drawGrid(GridModel gridModel, Graphics graphics, int width, int height)
        {
            int length = gridModel.grid.SideLength;     //网格宽度
            int sideHeight = gridModel.grid.SideHeight;     //网格高度
            int hnum = gridModel.grid.HorizontalNum;    //水平网格数
            int vnum = gridModel.grid.VerticalNum;      //垂直网格数
            int dashStyle = gridModel.grid.DashStyle;   //线形
            int thickness = gridModel.grid.Thickness;   //粗细
            int color = gridModel.grid.Color;           //颜色
            
            int hlines = vnum + 1;                      //水平线条数
            int vlines = hnum + 1;                      //垂直线条数
            Pen pen = new Pen(new SolidBrush(Color.FromArgb(color)), thickness);
            pen.DashStyle = (DashStyle)dashStyle;

            int y = (height - vnum * sideHeight) / 2;
            int x = (width - hnum * length) / 2;

            for (int i=0; i< hlines; i++)
            {
                graphics.DrawLine(pen, x, y + i * sideHeight, x + length * hnum, y + i * sideHeight);
            }

            for (int i = 0; i < vlines; i++)
            {
                graphics.DrawLine(pen, x + i * length, y, x + i * length, y + sideHeight * vnum);
            }
        }

        /// <summary>
        /// 绘制网格
        /// </summary>
        /// <param name="rulerModel"></param>
        /// <param name="graphics"></param>
        public static void drawGridFull(GridModel gridModel, Graphics graphics, int width, int height)
        {
            int hnum = gridModel.grid.HorizontalNum;    //水平网格数
            int vnum = gridModel.grid.VerticalNum;      //垂直网格数
            int dashStyle = gridModel.grid.DashStyle;   //线形
            int thickness = gridModel.grid.Thickness;   //粗细
            int color = gridModel.grid.Color;           //颜色

            int hlines = vnum + 1;                      //水平线条数
            int vlines = hnum + 1;                      //垂直线条数
            Pen pen = new Pen(new SolidBrush(Color.FromArgb(color)), thickness);
            pen.DashStyle = (DashStyle)dashStyle;

            float y = ((height * 1.0f ) / vnum);
            float x = ((width * 1.0f) / hnum);

            for (int i = 0; i < hlines; i++)
            {
                graphics.DrawLine(pen, 0, y * i , width, y * i);
            }

            for (int i = 0; i < vlines; i++)
            {
                graphics.DrawLine(pen, x * i, 0, x * i, height);
            }
        }

        /// <summary>
        /// 绘制方形网格,未按标尺进行处理
        /// </summary>
        /// <param name="gridModel"></param>
        /// <param name="graphics"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        public static void drawGridRectangle(GridModel gridModel, Graphics graphics, int width, int height, double micronRatio)
        {
            int length = gridModel.rectangle.sideLength;   //边长
            int dashStyle = gridModel.rectangle.DashStyle;   //线形
            int thickness = gridModel.rectangle.Thickness;   //粗细
            int color = gridModel.rectangle.Color;           //颜色

            Pen pen = new Pen(new SolidBrush(Color.FromArgb(color)), thickness);
            pen.DashStyle = (DashStyle)dashStyle;

            //float side = (float)(length / micronRatio);

            float x = (width - length) / 2;
            float y = (height - length) / 2;

            graphics.DrawRectangle(pen, x, y, length, length);
        }

        /// <summary>
        /// 绘制圆形网格,未按标尺进行处理
        /// </summary>
        /// <param name="gridModel"></param>
        /// <param name="graphics"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        public static void drawGridRound(GridModel gridModel, Graphics graphics, int width, int height, double micronRatio)
        {
            int diameter = gridModel.round.diameter;//直径
            int dashStyle = gridModel.round.DashStyle;   //线形
            int thickness = gridModel.round.Thickness;   //粗细
            int color = gridModel.round.Color;           //颜色

            Pen pen = new Pen(new SolidBrush(Color.FromArgb(color)), thickness);
            pen.DashStyle = (DashStyle)dashStyle;

            //float diameter = (float)(70 / micronRatio);//直径固定70微米

            float x = (width - diameter) / 2;
            float y = (height - diameter) / 2;

            graphics.DrawEllipse(pen, new RectangleF(x, y , diameter, diameter));
        }

        /// <summary>
        /// 绘制十字线,未按标尺进行处理
        /// </summary>
        /// <param name="gridModel"></param>
        /// <param name="graphics"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        public static void drawGridCrossCurve(GridModel gridModel, Graphics graphics, int width, int height)
        {
            if (gridModel == null)
            {
                //样式暂时写死,没有对应样式设置
                int dashStyle = 0;   //线形
                int thickness = 5;   //粗细
                int color = -59111;  //颜色

                Pen pen = new Pen(new SolidBrush(Color.FromArgb(color)), thickness);
                pen.DashStyle = (DashStyle)dashStyle;

                float lineLength = width < height ? width * 0.3f : height * 0.3f;//线长

                float x = (width - lineLength) / 2;
                float y = (height - lineLength) / 2;

                graphics.DrawLine(pen, x, height / 2, x + lineLength, height / 2);
                graphics.DrawLine(pen, width / 2, y, width / 2, y + lineLength);
            }
        }

        /// <summary>
        /// bitmap转base64
        /// </summary>
        /// <param name="bmp"></param>
        /// <returns></returns>
        public static string ImgToBase64String(Bitmap source)
        {
            OpenCvSharp.Mat mat = OpenCvSharp.Extensions.BitmapConverter.ToMat(source);
            Bitmap bitmap = OpenCvSharp.Extensions.BitmapConverter.ToBitmap(mat);
            string base64 = "";
            using (MemoryStream ms = new MemoryStream())
            {
                bitmap.Save(ms, ImageFormat.Jpeg);
                base64 = Convert.ToBase64String(ms.ToArray());
                ms.Close();
                bitmap.Dispose();
            }
            return base64;
        }

        /// <summary>
        /// base64转bitmap
        /// </summary>
        /// <param name="strbase64"></param>
        /// <returns></returns>
        public static Bitmap Base64StringToImage(string strbase64)
        {
            try
            {
                byte[] arr = Convert.FromBase64String(strbase64);
                MemoryStream ms = new MemoryStream(arr);
                Bitmap bmp = new Bitmap(ms);
                ms.Close();
                return bmp;
            }
            catch (Exception)
            {
                return null;
            }
        }

        /// <summary>
        /// 缩放图像
        /// </summary>
        /// <param name="originalImage"></param>
        /// <param name="width"></param>
        /// <param name="height"></param>
        /// <param name="mode"></param>
        /// <returns></returns>
        public static Image ResizeImage(Image originalImage, int width, int height, ThumbnailMode mode)
        {
            int towidth = width;
            int toheight = height;

            int x = 0;
            int y = 0;
            int initWidth = originalImage.Width;
            int initHeight = originalImage.Height;


            switch (mode)
            {
                case ThumbnailMode.UsrHeightWidth: //指定高宽缩放(可能变形)
                    break;
                case ThumbnailMode.UsrHeightWidthBound: //指定高宽缩放(可能变形)(过小则不变)
                    if (originalImage.Width <= width && originalImage.Height <= height)
                    {
                        return originalImage;
                    }
                    if (originalImage.Width < width)
                    {
                        towidth = originalImage.Width;
                    }
                    if (originalImage.Height < height)
                    {
                        toheight = originalImage.Height;
                    }
                    break;
                case ThumbnailMode.UsrWidth: //指定宽，高按比例
                    toheight = originalImage.Height * width / originalImage.Width;
                    break;
                case ThumbnailMode.UsrWidthBound: //指定宽(过小则不变)，高按比例
                    if (originalImage.Width <= width)
                    {
                        return originalImage;
                    }
                    else
                    {
                        toheight = originalImage.Height * width / originalImage.Width;
                    }
                    break;
                case ThumbnailMode.UsrHeight: //指定高，宽按比例
                    towidth = originalImage.Width * height / originalImage.Height;
                    break;
                case ThumbnailMode.UsrHeightBound: //指定高(过小则不变)，宽按比例
                    if (originalImage.Height <= height)
                    {
                        return originalImage;
                    }
                    else
                    {
                        towidth = originalImage.Width * height / originalImage.Height;
                    }
                    break;
                case ThumbnailMode.Cut: //指定高宽裁减(不变形)
                    //计算宽高比
                    double srcScale = (double)originalImage.Width / (double)originalImage.Height;
                    double destScale = (double)towidth / (double)toheight;
                    //宽高比相同
                    if (srcScale - destScale >= 0 && srcScale - destScale <= 0.001)
                    {
                        x = 0;
                        y = 0;
                        initWidth = originalImage.Width;
                        initHeight = originalImage.Height;
                    }
                    //源宽高比大于目标宽高比
                    //(源的宽比目标的宽大)
                    else if (srcScale > destScale)
                    {
                        initWidth = originalImage.Height * towidth / toheight;
                        initHeight = originalImage.Height;
                        x = (originalImage.Width - initWidth) / 2;
                        y = 0;
                    }
                    //源宽高比小于目标宽高小，源的高度大于目标的高度
                    else
                    {
                        initWidth = originalImage.Width;
                        initHeight = originalImage.Width * height / towidth;
                        x = 0;
                        y = (originalImage.Height - initHeight) / 2;
                    }
                    break;
                default:
                    break;
            }
            Image bitmap = new Bitmap(towidth, toheight);
            //新建一个画板
            using (Graphics g = Graphics.FromImage(bitmap))
            {
                //设置高质量插值法
                g.CompositingQuality = CompositingQuality.HighQuality;
                //设置高质量,低速段呈现的平滑程度
                g.SmoothingMode = SmoothingMode.HighQuality;

                //在指定的位置上,并按指定大小绘制原图片的指定部分
                g.DrawImage(originalImage, new Rectangle(0, 0, towidth, toheight), new Rectangle(x, y, initWidth, initHeight), GraphicsUnit.Pixel);
            }
            return bitmap;
        }

        /// <summary>
        /// 深拷贝,反射
        /// </summary>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static T DeepCopyByReflect<T>(T obj)
        {
            //如果是字符串或值类型则直接返回
            if (obj==null || obj is string || obj.GetType().IsValueType) return obj;
            object retval = Activator.CreateInstance(obj.GetType());
            FieldInfo[] fields = obj.GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
            foreach (FieldInfo field in fields)
            {
                try { field.SetValue(retval, DeepCopyByReflect(field.GetValue(obj))); }
                catch { }
            }
            return (T)retval;
        }

        public static List<T> DeepCopyListByReflect<T>(List<T> objs)
        {
            List<T> list = new List<T>();
            if (objs!=null && objs.Count>0)
            {
                foreach(T t in objs)
                {
                    list.Add(DeepCopyByReflect(t));
                }
            }
            return list;
        }

        /// <summary>
        /// 深拷贝,xml序列化与反序列化
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="xmlData"></param>
        /// <returns></returns>
        public static T DeserializeXML<T>(string xmlData) where T : new()
        {
            if (string.IsNullOrEmpty(xmlData))
                return default(T);

            TextReader tr = new StringReader(xmlData);
            T DocItms = new T();
            XmlSerializer xms = new XmlSerializer(DocItms.GetType());
            DocItms = (T)xms.Deserialize(tr);

            return DocItms == null ? default(T) : DocItms;
        }

        /// <summary>
        /// 图片裁剪
        /// </summary>原图
        /// <param name="b"></param>
        /// <param name="StartX">裁剪起始点横坐标</param>
        /// <param name="StartY">裁剪起始点纵坐标</param>
        /// <param name="iWidth">裁剪宽度</param>
        /// <param name="iHeight">裁剪高度</param>
        /// <returns></returns>
        public static Bitmap KiCut(Bitmap b, int StartX, int StartY, int iWidth, int iHeight)
        {
            if (b == null)
            {
                return null;
            }

            //不对超过原图尺寸的区域做处理,以黑色背景显示
            //int w = b.Width;
            //int h = b.Height;
            //if (StartX >= w || StartY >= h)
            //{
            //    return null;
            //}
            //if (StartX + iWidth > w)
            //{
            //    iWidth = w - StartX;
            //}
            //if (StartY + iHeight > h)
            //{
            //    iHeight = h - StartY;
            //}

            try
            {
                Bitmap bmpOut = new Bitmap(iWidth, iHeight);

                Graphics g = Graphics.FromImage(bmpOut);
                g.Clear(Color.Black);
                g.DrawImage(b, new Rectangle(0, 0, iWidth, iHeight), new Rectangle(StartX, StartY, iWidth, iHeight), GraphicsUnit.Pixel);
                g.Dispose();

                return bmpOut;
            }
            catch
            {
                return null;
            }
        }
    }
}