using PaintDotNet.Annotation.Enum;
using PaintDotNet.Base.CommTool;
using PaintDotNet.Base.SettingModel;

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Runtime.Serialization;
using System.Windows.Forms;
using System.Xml;

namespace PaintDotNet.Annotation.Label
{
    using PointList = List<PointF>;

    /// <summary>
    /// 标注->工字线
    /// </summary>
    public class DrawWorkType : DrawObject
    {
        private static Cursor handleCursor = new Cursor(PdnResources.GetResourceStream("Cursors.AnnotationPolyHandle.cur"));

        /// <summary>
        /// 标注样式信息model
        /// </summary>
        public WorkTypeStyleModel labelWorkTypeStyleMode;
        /// <summary>
        /// 点集合
        /// </summary>
        public PointList pointArray;

        public double unitLength = 1;
        private string unit = "μm";

        public DrawWorkType(ISurfaceBox surfaceBox) : base()
        {
            this.objectType = DrawClass.Label;
            this.drawToolType = DrawToolType.DrawWorkType;

            pointArray = new PointList();
            textboxMessage = "";

            Initialize();
        }

        public DrawWorkType(ISurfaceBox surfaceBox, int x, int y) : base()
        {
            this.objectType = DrawClass.Label;
            this.drawToolType = DrawToolType.DrawWorkType;

            labelWorkTypeStyleMode = surfaceBox.GetWorkTypeStyleModel();
            pointArray = new PointList();
            startPoint = new PointF(x, y);
            pointArray.Add(startPoint);
            textboxMessage = "";

            Initialize();
        }

        public DrawWorkType(ISurfaceBox surfaceBox, List<PointF> points, ParentStyleModel parentStyleModel, Object content) : base()
        {
            this.objectType = DrawClass.Label;
            this.drawToolType = DrawToolType.DrawWorkType;
            this.ISurfaceBox = surfaceBox;

            labelWorkTypeStyleMode = (WorkTypeStyleModel)parentStyleModel;
            pointArray = points;
            textboxMessage = content.ToString();
        }

        /// <summary>
        /// Clone this instance
        /// </summary>
        public override DrawObject Clone()
        {
            DrawWorkType newWorkType = new DrawWorkType(ISurfaceBox);
            newWorkType.objectType = DrawClass.Label;
            newWorkType.drawToolType = DrawToolType.DrawWorkType;
            newWorkType.ISurfaceBox = this.ISurfaceBox;
            newWorkType.pointArray = this.pointArray;
            newWorkType.rectangle = this.rectangle;
            newWorkType.textboxMessage = this.textboxMessage;
            newWorkType.labelWorkTypeStyleMode = this.labelWorkTypeStyleMode;
            FillDrawObjectFields(newWorkType);
            return newWorkType;
        }

        public override DrawObject Clone(ISurfaceBox surfaceBox)
        {
            DrawWorkType newWorkType = new DrawWorkType(surfaceBox);
            newWorkType.objectType = DrawClass.Label;
            newWorkType.drawToolType = DrawToolType.DrawWorkType;
            newWorkType.ISurfaceBox = surfaceBox;
            newWorkType.pointArray = this.pointArray;
            newWorkType.rectangle = this.rectangle;
            newWorkType.textboxMessage = this.textboxMessage;
            newWorkType.labelWorkTypeStyleMode = this.labelWorkTypeStyleMode;
            FillDrawObjectFields(newWorkType);
            return newWorkType;
        }

        public override void Draw(Graphics g)
        {
            //辅助线样式
            Pen guideLinePen = new Pen(Color.FromArgb(labelWorkTypeStyleMode.guideColour), labelWorkTypeStyleMode.guideLineWidth);
            //测量线样式
            Pen measureLinePen = new Pen(Color.FromArgb(labelWorkTypeStyleMode.measureColour), labelWorkTypeStyleMode.measureLineWidth);
            //测量内容样式
            Font textfont = new Font(this.labelWorkTypeStyleMode.font, this.labelWorkTypeStyleMode.fontSize);
            Brush textbrush = new SolidBrush(Color.FromArgb(this.labelWorkTypeStyleMode.fontColour));
            //连接线样式
            Pen connectLinePen = new Pen(Color.FromArgb(labelWorkTypeStyleMode.connectColour), labelWorkTypeStyleMode.connectLineWidth);

            g.SmoothingMode = SmoothingMode.AntiAlias;
            
            
            if (pointArray.Count == 2)
            {
                g.DrawLine(guideLinePen, pointArray[0].X, pointArray[0].Y, pointArray[1].X, pointArray[1].Y);
            }

            if (textboxMessage != "" && textboxMessage != null)//如果工字线距离的值已经有了
            {
                //算第一条线的中心店
                if (pointArray.Count < 3)
                {
                    pointArray.Add(new PointF((pointArray[0].X + pointArray[1].X) / 2, (pointArray[0].Y + pointArray[1].Y) / 2));
                }
                else
                {
                    pointArray[2] = new PointF((pointArray[0].X + pointArray[1].X) / 2, (pointArray[0].Y + pointArray[1].Y) / 2);
                }
                ISurfaceBox.getMeasureInfo().TryGetValue(MeasurementUnit.Micron,out unitLength);
                this.labelWorkTypeStyleMode.distance = double.Parse(textboxMessage.ToString());
                double measureLineEnterLength = double.Parse(textboxMessage.ToString()) / unitLength;//获取输入的距离值

                //按路径和名称保存xml文件
                string workTypeXml = XmlSerializeHelper.XmlSerialize<WorkTypeStyleModel>(this.labelWorkTypeStyleMode);
                //xml保存路径
                string filePath = Application.StartupPath + "\\Config\\Default \\WorkType\\Default" + ".xml";
                //保存xml
                FileOperationHelper.WriteStringToFile(workTypeXml, filePath, FileMode.Create);

                PointF a = pointArray[0];
                PointF b = pointArray[2];
                PointF measureLinePoint = new PointF();

                double ratioXY = Math.Abs((double)(pointArray[1].X - pointArray[0].X)) / Math.Abs((double)(pointArray[1].Y - pointArray[0].Y));//xy比率
                double relativeY = judgeP.Y - pointArray[0].Y;//Y轴相对长度
                int relativeX = (int)(relativeY * ratioXY);//X轴相对长度
                int x = 0; //与第一条线垂直方向横坐标位置

                //判断第三点所在象限位置，决定 + OR - X轴相对长度  结束点减起始点大于0  2、3象限，否则1、4象限
                if ((double)(pointArray[1].Y - pointArray[0].Y) > 0)
                {
                    //判断第三点相对Y轴角度，如果大于直线相对Y轴角度则减去X轴相对长度，否则加上
                    if ((double)(judgeP.X - pointArray[0].X) / (double)(judgeP.Y - pointArray[0].Y) > (double)(pointArray[1].X - pointArray[0].X) / (double)(pointArray[1].Y - pointArray[0].Y))
                    {
                        x = judgeP.X - relativeX;
                    }
                    else
                    {
                        x = judgeP.X + relativeX;
                    }
                }
                else
                {
                    if ((double)(judgeP.X - pointArray[0].X) / (double)(judgeP.Y - pointArray[0].Y) > (double)(pointArray[1].X - pointArray[0].X) / (double)(pointArray[1].Y - pointArray[0].Y))
                    {
                        x = judgeP.X + relativeX;
                    }
                    else
                    {
                        x = judgeP.X - relativeX;
                    }
                }
                
                //计算测量线的另一个点
                if (x > judgeP.X)
                {
                    measureLinePoint.X = Convert.ToInt32(b.X + (measureLineEnterLength * (a.Y - b.Y)) / Math.Sqrt(((a.X - b.X) * (a.X - b.X)) + ((a.Y - b.Y) * (a.Y - b.Y))));
                    measureLinePoint.Y = Convert.ToInt32(b.Y - (measureLineEnterLength * (a.X - b.X)) / Math.Sqrt(((a.X - b.X) * (a.X - b.X)) + ((a.Y - b.Y) * (a.Y - b.Y))));
                }
                else
                {
                    measureLinePoint.X = Convert.ToInt32(b.X - (measureLineEnterLength * (a.Y - b.Y)) / Math.Sqrt(((a.X - b.X) * (a.X - b.X)) + ((a.Y - b.Y) * (a.Y - b.Y))));
                    measureLinePoint.Y = Convert.ToInt32(b.Y + (measureLineEnterLength * (a.X - b.X)) / Math.Sqrt(((a.X - b.X) * (a.X - b.X)) + ((a.Y - b.Y) * (a.Y - b.Y))));
                }
                
                if (pointArray.Count < 4)
                {
                    pointArray.Add(measureLinePoint);
                }
                else
                {
                    pointArray[3] = measureLinePoint;
                }

                double countLength = (Math.Sqrt((pointArray[1].X - pointArray[0].X) * (pointArray[1].X - pointArray[0].X) + (pointArray[1].Y - pointArray[0].Y) * (pointArray[1].Y - pointArray[0].Y))) / 2;

                //通过测量线两点之间的偏移值,计算辅助线和连接线对应的点
                float registX = pointArray[3].X - pointArray[2].X;//横坐标偏移距离
                float registY = pointArray[3].Y - pointArray[2].Y;//纵坐标偏移距离
                PointF connectLinePoint1 = new PointF(pointArray[0].X + registX, pointArray[0].Y + registY);
                PointF connectLinePoint2 = new PointF(pointArray[1].X + registX, pointArray[1].Y + registY);

                if (pointArray.Count < 5)
                {
                    pointArray.Add(connectLinePoint1);
                }
                else
                {
                    pointArray[4] = connectLinePoint1;
                }
                if (pointArray.Count < 6)
                {
                    pointArray.Add(connectLinePoint2);
                }
                else
                {
                    pointArray[5] = connectLinePoint2;
                }

                //算外圈的矩形尺寸
                float[] pointX = new float[] { pointArray[0].X, pointArray[1].X, pointArray[4].X, pointArray[5].X };
                rectangle.X = pointX.Min();
                float[] pointY = new float[] { pointArray[0].Y, pointArray[1].Y, pointArray[4].Y, pointArray[5].Y };
                rectangle.Y = pointY.Min();
                rectangle.Width = pointX.Max() - pointX.Min();
                rectangle.Height = pointY.Max() - pointY.Min();

                double measureLineCountLength = Math.Sqrt((pointArray[2].X - pointArray[3].X) * (pointArray[2].X - pointArray[3].X) + (pointArray[2].Y - pointArray[3].Y) * (pointArray[2].Y - pointArray[3].Y));
                
                string workMessage = "";
                
                int isGuideLineShow = labelWorkTypeStyleMode.guideShowFlag;//辅助线是否显示
                if (isGuideLineShow == 1)
                {
                    //显示
                    g.DrawLine(guideLinePen, pointArray[0].X, pointArray[0].Y, pointArray[1].X, pointArray[1].Y);
                }

                int isMeasureRangeShow = labelWorkTypeStyleMode.measureRangeShowFlag;//测量线距离是否显示
                if (isMeasureRangeShow == 1)
                {
                    //显示
                    workMessage += "距离: " + double.Parse(textboxMessage.ToString()) + unit + "\r\n";
                    //workMessage += "距离: " + Math.Floor(measureLineCountLength) + unit + "\r\n";
                }
                int isMeasureLengthShow = labelWorkTypeStyleMode.measureLengthShowFlag;//测量线长度是否显示
                if (isMeasureLengthShow == 1)
                {  
                    //显示
                    workMessage += "长度:" + Math.Round(countLength * 2, 2) + unit;
                }

                int isConnectShow = labelWorkTypeStyleMode.connectShowFlag;//连接线是否显示
                if (isConnectShow == 1)
                {
                    //显示
                    g.DrawLine(connectLinePen, pointArray[4].X, pointArray[4].Y, pointArray[5].X, pointArray[5].Y);
                }

                SizeF fontSize = g.MeasureString(workMessage, textfont);//获取字符串对应的矩形尺寸
                RectangleF workRec = new RectangleF();
                workRec.X = (pointArray[2].X + pointArray[3].X) / 2;
                workRec.Y = (pointArray[2].Y + pointArray[3].Y) / 2;
                workRec.Width = fontSize.Width;
                workRec.Height = fontSize.Height;

                g.DrawLine(measureLinePen, pointArray[2].X, pointArray[2].Y, pointArray[3].X, pointArray[3].Y);
                g.DrawString(workMessage, textfont, textbrush, workRec);
            }

            guideLinePen.Dispose();
            measureLinePen.Dispose();
            textbrush.Dispose();
            connectLinePen.Dispose();
        }

        public override int HandleCount
        {
            get
            {
                return 2;
            }
        }

        /// <summary>
        /// Get handle pointscroll by 1-based number
        /// </summary>
        /// <param name="handleNumber"></param>
        /// <returns></returns>
        public override PointF GetHandle(int handleNumber)
        {
            PointF newPoint = new PointF();
            switch (handleNumber)
            {
                case 1:
                    newPoint.X = pointArray[0].X;
                    newPoint.Y = pointArray[0].Y;
                    break;
                case 2:
                    newPoint.X = pointArray[1].X;
                    newPoint.Y = pointArray[1].Y;
                    break;
            }
            return newPoint;
        }

        /// <summary>
        /// Hit test.
        /// Return value: -1 - no hit
        ///               0 - hit anywhere
        ///               > 1 - handle number
        /// </summary>
        /// <param name="pointscroll"></param>
        /// <returns></returns>
        public override int HitTest(Point point)
        {
            if (Selected)
            {
                for (int i = 1; i <= HandleCount; i++)
                {
                    if (GetHandleRectangle(i).Contains(point))
                        return i;
                }
            }

            if (PointInObject(point))
                return 0;

            return -1;
        }

        protected override bool PointInObject(Point point)
        {
            return rectangle.Contains(point);
        }

        public override bool IntersectsWith(Rectangle rectangle)
        {
            return Rectangle.IntersectsWith(rectangle);
        }

        public override Cursor GetHandleCursor(int handleNumber)
        {
            return Cursors.Default;
        }

        public override void MoveHandleTo(Point point, int handleNumber)
        {
            if (handleNumber < 3)
            {
                pointArray[handleNumber - 1] = point;
            }
        }

        public override void Move(int deltaX, int deltaY)
        {
            for (int i = 0; i < pointArray.Count; i++)
            {
                pointArray[i] = new PointF(pointArray[i].X + ISurfaceBox.UnscaleScalar(deltaX), pointArray[i].Y + ISurfaceBox.UnscaleScalar(deltaY));
            }
            judgeP.X = judgeP.X + ISurfaceBox.UnscaleScalar(deltaX);
            judgeP.Y = judgeP.Y + ISurfaceBox.UnscaleScalar(deltaY);
            rectangle.X += deltaX;
            rectangle.Y += deltaY;
        }

        public override void DrawTracker(Graphics g)
        {
            if (!Selected)
                return;

            if (pointArray.Count > 1)
            {
                SolidBrush brush = new SolidBrush(Color.Black);
                for (int i = 1; i <= HandleCount; i++)
                {
                    g.FillRectangle(brush, GetHandleRectangle(i));
                }
                brush.Dispose();

                RectangleF r = GetBoundingBox();
                g.DrawRectangle(new Pen(Color.White), r.X, r.Y, r.Width, r.Height);
            }
        }

        public override RectangleF GetBoundingBox()
        {
            return rectangle;
        }

        internal void setNextPoint(PointF p)
        {
            AddPoint(p);
        }

        public void AddPoint(PointF point)
        {
            pointArray.Add(point);
        }

        public override List<PointF> GetPoints()
        {
            return pointArray;
        }

        public override ParentStyleModel GetStyle()
        {
            return labelWorkTypeStyleMode;
        }

        public override string GetContent()
        {
            return textboxMessage;
        }
    }
}