using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 

namespace DPumpHydr.OpenFwUI.Volute
{
    public partial class ChartSectArea : UserControl
    {
        public ChartSectArea()
        {
            this.KeyDown += chart_KeyDown;
            this.MouseClick += chart_MouseClick;
            if (_allSection == null)
            {
                SectionInfo sect0 = new SectionInfo() { SectIndex = 0, Name = "0", Area = 0, IsVisible = false };
                SectionInfo sect1 = new SectionInfo() { SectIndex = 1, Name = "1", Area = 0, IsVisible = true };
                SectionInfo sect2 = new SectionInfo() { SectIndex = 2, Name = "2", Area = 0, IsVisible = true };
                SectionInfo sect3 = new SectionInfo() { SectIndex = 3, Name = "3", Area = 0, IsVisible = true };
                SectionInfo sect4 = new SectionInfo() { SectIndex = 4, Name = "4", Area = 0, IsVisible = true };
                SectionInfo sect5 = new SectionInfo() { SectIndex = 5, Name = "5", Area = 0, IsVisible = true };
                SectionInfo sect6 = new SectionInfo() { SectIndex = 6, Name = "6", Area = 0, IsVisible = true };
                SectionInfo sect7 = new SectionInfo() { SectIndex = 7, Name = "7", Area = 0, IsVisible = true };
                SectionInfo sect8 = new SectionInfo() { SectIndex = 8, Name = "8", Area = 0, IsVisible = true };
                SectionInfo sect9 = new SectionInfo() { SectIndex = 9, Name = "9", Area = 0, IsVisible = false };
                SectionInfo sect10 = new SectionInfo() { SectIndex = 10, Name = "10", Area = 0, IsVisible = false };
                SectionInfo sect99 = new SectionInfo() { SectIndex = 99, Name = "出口", Area = 0, IsVisible = false };

                _allSection = new List<SectionInfo> { sect0, sect1, sect2, sect3, sect4, sect5, sect6, sect7, sect8, sect9, sect10, sect99 };
            }

        }
        public class SectionInfo
        {
            public int SectIndex { get; set; }
            public string Name { get; set; }
            public double Area { get; set; }
            public bool IsVisible { get; set; }
            public float PosiX { get; set; }
            public float PosiY { get; set; }
            public bool IsSelected { get; set; }
        }
 
        class AreaAxisRange
        {
            public List<double> AxisValues { get; set; }
            public double CoordMax { get { return AxisValues.Last(); } }//坐标上最大值
            public double CoordMin { get { return AxisValues.First(); } }//坐标上最小值  
        }
        private int _area_space_down = 2;
        private int _area_space_up = 2;
        private float CalcAreaPixelPt(double area)
        {  
            var y = this._diagram_margin_top + this._diagram_padding_top + _area_space_up +
                (_areaAxisRange.CoordMax - area) * (this._diagram_height - this._diagram_padding_top - this._diagram_padding_bottom - this._area_space_up-this._area_space_down) / (_areaAxisRange.CoordMax - _areaAxisRange.CoordMin);

            return Convert.ToSingle(y);
        }
        public void RefreshControl()
        { 
            this.Invalidate();
            this.Refresh();
        }
        List<SectionInfo> _allSection;
 
        public void SetArea18(DPumpHydr.OpenFwUI.Volute.SectionShapePara para)
        {
            _allSection[para.Index].Area = para.SectionArea;
            CalcCoordRange();
            this.Invalidate(); 
        }

        public void SetArea18(List<double> areas)
        {
            for (int i = 0; i < areas.Count; i++)
            {
                _allSection[i].Area = areas[i];
            }
            CalcCoordRange();
            this.Invalidate(); 
        }

        public void SetArea9(double area)
        {
            _allSection[9].Area = area;
            _allSection[9].IsVisible = true;
            CalcCoordRange();
            this.Invalidate();
        }
        public void SetArea10(double area)
        {
            _allSection[10].Area = area;
            _allSection[10].IsVisible = true;
            CalcCoordRange();
            this.Invalidate();
        }
        public void SetAreaOutletDia(double dia)
        {
            _allSection.Last().Area = dia * dia * 3.1415 / 4;
            _allSection.Last().IsVisible = true;

            CalcCoordRange();
            this.Invalidate();
        }
        private void CalcCoordRange()
        {
            var areas = _allSection.Where(x => x.Area > 0 && x.IsVisible).Select(x => x.Area);
            if (areas.Count() < 3)
                return;
            _areaAxisRange = new AreaAxisRange();
            _areaAxisRange.AxisValues = new List<double>();

            double real_area_max = ((int)(Math.Ceiling(areas.Max() * 1.1) / 100) + 1) * 100;
            double real_area_min = (int)(Math.Ceiling(areas.Min() / 2) / 10) * 10;
            _areaAxisRange.AxisValues.Add(real_area_min);
            _areaAxisRange.AxisValues.Add((real_area_min + real_area_max) / 2);
            _areaAxisRange.AxisValues.Add(real_area_max);

        }

        AreaAxisRange _areaAxisRange = null;
        float _spaceWidthX = 0;
        float _crawlDistPixel = 0;//拖动时移动像素位置
        double _crawlDistArea = 0;//拖动时移动面积
        /// <summary>
        /// 
        /// </summary>
        /// <param name="e"></param>
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            _diagram_width = this.Width - this._diagram_margin_left - this._diagram_margin_right;
            _diagram_height = this.Height - this._diagram_margin_top - this._diagram_margin_bottom;
            if (_diagram_height <= 0 || _diagram_width <= 10)
            {
                return;
            }
            _diagram_leftTopPoint.X = this._diagram_margin_left;
            _diagram_leftTopPoint.Y = this._diagram_margin_top ;

            _diagram_leftBottomPoint.X = this._diagram_margin_left;
            _diagram_leftBottomPoint.Y = this._diagram_margin_top + _diagram_height;

            _diagram_rightTopPoint.X = this._diagram_margin_left + _diagram_width;
            _diagram_rightTopPoint.Y = this._diagram_margin_top;

            _diagram_rightBottomPoint.X = this._diagram_margin_left + _diagram_width;
            _diagram_rightBottomPoint.Y = this._diagram_margin_top + _diagram_height;

            int visile_count = _allSection.Count(x => x.Area > 0 && x.IsVisible);
            if (visile_count <= 1)
                return;

            _spaceWidthX = (this._diagram_width - 20 - _diagram_padding_left - _diagram_padding_right) / (visile_count - 1);
            _crawlDistPixel =
                (this._diagram_height - this._diagram_padding_top - this._diagram_padding_bottom - this._area_space_up - this._area_space_down) / 50;
            _crawlDistArea = (_areaAxisRange.CoordMax - _areaAxisRange.CoordMin) / 50;
            for (int i = 1; i < _allSection.Count; i++)
            {
                var sect = _allSection[i];
                if (sect.Area <= 0 || sect.IsVisible == false)
                    continue;

                sect.PosiX = this._diagram_leftBottomPoint.X + _diagram_padding_left + (i - 1) * _spaceWidthX;
                sect.PosiY = this.CalcAreaPixelPt(sect.Area);
            }


            if (_allSection.Count(sect => sect.Area > 0) > 4)
            { 
                Graphics g = e.Graphics;
                DrawAxisX(g);
                DrawAxisY(g);
                DrawDiagram(g);
            }


        }

    


        PointF _diagram_leftTopPoint = new PointF();
        PointF _diagram_leftBottomPoint = new PointF();
        PointF _diagram_rightTopPoint = new PointF();
        PointF _diagram_rightBottomPoint = new PointF();

        float _diagram_width = 0;
        float _diagram_height = 0;
        float _diagram_margin_left = 60;
        float _diagram_margin_right = 40;
        float _diagram_margin_top = 20;
        float _diagram_margin_bottom = 16;

        float _diagram_padding_left = 0;
        float _diagram_padding_right = 0;
        float _diagram_padding_top = 0;
        float _diagram_padding_bottom = 0;

        Color _tickmarkColorX = Color.Black;//主刻度
        float _tickmarkLengthX = 5;

        private void DrawAxisX(Graphics g)
        {
            StringFormat sf = new StringFormat();
            sf.Alignment = StringAlignment.Center;
            sf.LineAlignment = StringAlignment.Near;

    

            //刻度 tickmark
            using (SolidBrush brushText = new SolidBrush(Color.Black))
            using (Font fontText = new Font("Courier New", 10))
            using (Pen penAxisBase = new Pen(_tickmarkColorX, 2f))
            {
                for (int i = 1; i < _allSection.Count; i++)
                {
                    var sect = _allSection[i];
                    if(sect.Area<=0 || sect.IsVisible==false) 
                            continue;
                    var x = this._diagram_leftBottomPoint.X + _diagram_padding_left + (i - 1) * _spaceWidthX;
                    g.DrawLine(penAxisBase, new PointF(x, _diagram_leftBottomPoint.Y), new PointF(x, _diagram_leftBottomPoint.Y - _tickmarkLengthX));

                    g.DrawString(sect.Name, fontText, brushText, new PointF(x, _diagram_leftBottomPoint.Y + 2), sf);
                }

                //基线
                g.DrawLine(penAxisBase, _diagram_leftBottomPoint, _diagram_rightBottomPoint);

                // 添加箭头
                float arrowLength = 10f; // 箭头的长度
                float arrowWidth = 5f; // 箭头的宽度
                PointF arrowBase = new PointF(_diagram_rightBottomPoint.X, _diagram_rightBottomPoint.Y);
                PointF arrowTip = new PointF(_diagram_rightBottomPoint.X - arrowLength, _diagram_rightBottomPoint.Y);
                g.DrawLine(penAxisBase, arrowBase, arrowTip); // 绘制箭头的主体
                g.DrawLine(penAxisBase, new PointF(arrowTip.X, arrowTip.Y - arrowWidth), new PointF(arrowBase.X, arrowBase.Y)); // 绘制箭头的左翼
                g.DrawLine(penAxisBase, new PointF(arrowTip.X, arrowTip.Y + arrowWidth), new PointF(arrowBase.X, arrowBase.Y)); // 绘制箭头的右翼

                // 添加单位 m³
                string unitText = "断面";
                PointF unitPosition = new PointF(_diagram_rightBottomPoint.X - arrowLength + 30, _diagram_leftBottomPoint.Y - 5);
                g.DrawString(unitText, fontText, brushText, unitPosition, sf);
            }
        }
        private void DrawAxisY(Graphics g)
        { 
            var min_scale = CalcAreaPixelPt(_areaAxisRange.AxisValues[0]);
            var meddle_scale = CalcAreaPixelPt(_areaAxisRange.AxisValues[1]);
            var max_scale = CalcAreaPixelPt(_areaAxisRange.AxisValues[2]);

            using (SolidBrush brushText = new SolidBrush(Color.Black))
            using (Font fontText = new Font("Courier New", 9))
            using (Pen penCurve = new Pen(Color.Black, 2f))
            {
                g.DrawLine(penCurve, new PointF(this._diagram_leftBottomPoint.X, max_scale), new PointF(this._diagram_leftBottomPoint.X - _tickmarkLengthX, max_scale));
                g.DrawLine(penCurve, new PointF(this._diagram_leftBottomPoint.X, min_scale), new PointF(this._diagram_leftBottomPoint.X - _tickmarkLengthX, min_scale));
                g.DrawLine(penCurve, new PointF(this._diagram_leftBottomPoint.X, meddle_scale), new PointF(this._diagram_leftBottomPoint.X - _tickmarkLengthX, meddle_scale));
                g.DrawLine(penCurve, _diagram_leftBottomPoint, _diagram_leftTopPoint);

                // 添加y轴末尾的箭头
                float arrowLength = 14f; // 箭头的长度
                //float arrowWidth = 5f; // 箭头的宽度
                PointF arrowBase = new PointF(this._diagram_leftBottomPoint.X, this._diagram_leftTopPoint.Y);
                PointF arrowTip = new PointF(this._diagram_leftBottomPoint.X, this._diagram_leftTopPoint.Y - arrowLength);
                g.DrawLine(penCurve, arrowBase, arrowTip); // 绘制箭头的主体
                //g.DrawLine(penCurve, new PointF(arrowTip.X - arrowWidth, arrowTip.Y-4), new PointF(arrowBase.X, arrowBase.Y)); // 绘制箭头的左翼
                //g.DrawLine(penCurve, new PointF(arrowTip.X + arrowWidth, arrowTip.Y-4), new PointF(arrowBase.X - 1, arrowBase.Y)); // 绘制箭头的右翼

                PointF unit_position = new PointF(_diagram_leftBottomPoint.X + 20, _diagram_leftTopPoint.Y - 15);
                PointF max_scale_position = new PointF(_diagram_leftBottomPoint.X - 25, max_scale - 8);
                PointF min_scale_position = new PointF(_diagram_leftBottomPoint.X - 25, min_scale - 8);
                PointF median_scale_position = new PointF(_diagram_leftBottomPoint.X - 25, meddle_scale - 8);

                StringFormat sf = new StringFormat();
                sf.Alignment = StringAlignment.Center;
                sf.LineAlignment = StringAlignment.Near;
                string unit_text = "mm²";
                g.DrawString(unit_text, fontText, brushText, unit_position, sf);
                g.DrawString(_areaAxisRange.AxisValues[2].ToString(), fontText, brushText, max_scale_position, sf);
                g.DrawString(_areaAxisRange.AxisValues[0].ToString(), fontText, brushText, min_scale_position, sf);
                g.DrawString(_areaAxisRange.AxisValues[1].ToString(), fontText, brushText, median_scale_position, sf);
            }
            using (Pen penCurve = new Pen(Color.Gray, 1f))
            {
                penCurve.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
                float width = this._diagram_width - _diagram_padding_left - _diagram_padding_right;
                g.DrawLine(penCurve, new PointF(this._diagram_leftBottomPoint.X, max_scale), new PointF(this._diagram_leftBottomPoint.X + width, max_scale));
                g.DrawLine(penCurve, new PointF(this._diagram_leftBottomPoint.X, min_scale), new PointF(this._diagram_leftBottomPoint.X + width, min_scale));
                g.DrawLine(penCurve, new PointF(this._diagram_leftBottomPoint.X, meddle_scale), new PointF(this._diagram_leftBottomPoint.X + width, meddle_scale));
            }
        }

    
        private void DrawDiagram(Graphics g)
        {
            var sect_count = _allSection.Count;


            List<PointF> curve_pts = new List<PointF>();
            for (int i = 1; i < sect_count; i++)
            {
                var sect = _allSection[i];
                if (sect.Area <= 0 || sect.PosiX <= 0 || sect.PosiY <= 0)
                    continue;
                curve_pts.Add(new PointF(sect.PosiX, sect.PosiY));
            }
            using (Pen penCurve = new Pen(Color.Black, 2f))
                g.DrawCurve(penCurve, curve_pts.ToArray());




            var select_sect = _allSection.Find(x => x.IsSelected);

            if (select_sect == null)
            {
                using (SolidBrush penBrush = new SolidBrush(Color.Black))
                { 
                    for (int i = 1; i < sect_count; i++)
                    {
                        var sect = _allSection[i];
                        if (sect.Area <= 0)
                            continue;
                        if (!sect.IsVisible)
                            continue;
                        g.FillEllipse(penBrush, sect.PosiX - 4f, sect.PosiY - 4f, 8, 8);
                    }
                }
            }
            else
            {
                using (SolidBrush selBrush = new SolidBrush(Color.FromArgb(72, 61, 139)))
                using (SolidBrush unBrush = new SolidBrush(Color.FromArgb(135, 206, 250)))
                {
                    for (int i = 1; i < sect_count; i++)
                    {
                        var sect = _allSection[i];
                        if (sect.Area <= 0)
                            continue;
                        if (!sect.IsVisible)
                            continue;
                        if (sect.IsSelected)
                            g.FillEllipse(selBrush, sect.PosiX - 4f, sect.PosiY - 4f, 8, 8);
                        else
                            g.FillEllipse(unBrush, sect.PosiX - 4f, sect.PosiY - 4f, 8, 8);
                    }
                }
            }


        }

        protected override bool ProcessDialogKey(Keys keyData)
        {
            if (keyData == Keys.Up || keyData == Keys.Down || keyData == Keys.Left || keyData == Keys.Right)
            {
                return false;
            }
            else
            {
                return base.ProcessDialogKey(keyData);
            }
        }
        public Action<int, double> OnRefreshSingleSectArea = null;
 
        private void chart_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
        {
            var select_sect = this._allSection.Find(x => x.IsSelected);
            if (select_sect == null)
            {
                return;
            }
            //var data = this.GetBindingData();
            //if (data == null)
            //{
            //    return;
            //}
            //根据按键增加或减少Y值
            if (e.KeyCode == Keys.Up)
            {
                select_sect.PosiY  = select_sect.PosiY + _crawlDistPixel; // 增加Y值
                select_sect.Area = select_sect.Area + _crawlDistArea;
                //this.SetArea18(data);
                //_bundle.Area[_selectedPointIndex] = data[_selectedPointIndex];
                OnRefreshSingleSectArea.Invoke(select_sect.SectIndex, select_sect.Area);
                this.Invalidate();
            }
            else if (e.KeyCode == Keys.Down)
            {
                select_sect.PosiY = select_sect.PosiY - _crawlDistPixel; // 增加Y值
                select_sect.Area = select_sect.Area - _crawlDistArea;
                //chart.SetArea18(data);
                //_bundle.Area[_selectedPointIndex] = data[_selectedPointIndex];
                OnRefreshSingleSectArea.Invoke(select_sect.SectIndex, select_sect.Area);
                this.Invalidate();
            }
        }
        //int _sequence = 0;
        private void chart_MouseClick(object sender, MouseEventArgs e)
        {
            for (int i = 1; i <= 8; i++)
            {
                _allSection[i].IsSelected = false;
            }

                for (int i = 1; i <= 8; i++)
            {

                if (e.X > _allSection[i].PosiX - 5 && e.X < _allSection[i].PosiX + 5 && e.Y > _allSection[i].PosiY - 5 && e.Y < _allSection[i].PosiY + 5)
                {
                    _allSection[i].IsSelected = true ;
                    this.Invalidate();
                    this.Refresh();
                    break;
                }

            }
        }

    }
}