#region Imports

using DPumpHydr.WinFrmUI.RLT.Util;
using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Text;
using System.Windows.Forms;

#endregion

namespace DPumpHydr.WinFrmUI.RLT.Controls
{
    #region ForeverComboBox

    public class ForeverComboBox : ComboBox
    {
        private int W;
        private int H;
        private int _StartIndex = 0;
        private int x;
        private int y;

        private MouseStateForever State = MouseStateForever.None;

        protected override void OnMouseDown(MouseEventArgs e)
        {
            base.OnMouseDown(e);
            State = MouseStateForever.Down;
            Invalidate();
        }

        protected override void OnMouseUp(MouseEventArgs e)
        {
            base.OnMouseUp(e);
            State = MouseStateForever.Over;
            Invalidate();
        }

        protected override void OnMouseEnter(EventArgs e)
        {
            base.OnMouseEnter(e);
            State = MouseStateForever.Over;
            Invalidate();
        }

        protected override void OnMouseLeave(EventArgs e)
        {
            base.OnMouseLeave(e);
            State = MouseStateForever.None;
            Invalidate();
        }

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);
            x = e.Location.X;
            y = e.Location.Y;
            Invalidate();
            if (e.X < Width - 41)
            {
                Cursor = Cursors.Default; //Cursors.IBeam
            }
            else
            {
                Cursor = Cursors.Hand;
            }
        }

        protected override void OnDrawItem(DrawItemEventArgs e)
        {
            base.OnDrawItem(e);
            Invalidate();
            if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
            {
                Invalidate();
            }
        }

        protected override void OnClick(EventArgs e)
        {
            base.OnClick(e);
            Invalidate();
        }

        [Category("Colors")]
        public Color HoverColor { get; set; } = Color.FromArgb(35, 168, 109);

        [Category("Colors")]
        public Color HoverFontColor { get; set; } = Color.White;

        [Category("Colors")]
        public Color BaseColor { get; set; } = Color.FromArgb(25, 27, 29);

        [Category("Colors")]
        public Color BGColor { get; set; } = Color.FromArgb(45, 47, 49);

        private int StartIndex
        {
            get => _StartIndex;
            set
            {
                _StartIndex = value;
                try
                {
                    base.SelectedIndex = value;
                }
                catch
                {
                    //
                }
                Invalidate();
            }
        }

        public void DrawItem_(object sender, DrawItemEventArgs e)
        {
            if (e.Index < 0)
            {
                return;
            }

            e.DrawBackground();
            e.DrawFocusRectangle();

            e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
            e.Graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
            e.Graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
            e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;

            if ((e.State & DrawItemState.Selected) == DrawItemState.Selected)
            {
                //-- Selected item
                e.Graphics.FillRectangle(new SolidBrush(HoverColor), e.Bounds);
            }
            else
            {
                //-- Not Selected
                e.Graphics.FillRectangle(new SolidBrush(BaseColor), e.Bounds);
            }

            //-- Text
            e.Graphics.DrawString(base.GetItemText(base.Items[e.Index]), new Font("Segoe UI", 8), new SolidBrush(HoverFontColor), new Rectangle(e.Bounds.X + 2, e.Bounds.Y + 2, e.Bounds.Width, e.Bounds.Height));

            e.Graphics.Dispose();
        }

        protected override void OnResize(EventArgs e)
        {
            base.OnResize(e);
            Height = 18;
        }

        public ForeverComboBox()
        {
            DrawItem += DrawItem_;
            SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.ResizeRedraw | ControlStyles.OptimizedDoubleBuffer, true);
            DoubleBuffered = true;

            DrawMode = DrawMode.OwnerDrawFixed;
            ForeColor = HoverFontColor;
            DropDownStyle = ComboBoxStyle.DropDownList;
            Cursor = Cursors.Hand;
            StartIndex = 0;
            ItemHeight = 18;
            Font = new("Segoe UI", 8, FontStyle.Regular);
        }

        protected override void OnPaint(PaintEventArgs e)
        {
            Bitmap B = new(Width, Height);
            Graphics G = Graphics.FromImage(B);
            W = Width;
            H = Height;

            Rectangle Base = new(0, 0, W, H);
            Rectangle Button = new(Convert.ToInt32(W - 40), 0, W, H);
            GraphicsPath GP = new();
            GraphicsPath GP2 = new();

            Graphics _with16 = G;
            _with16.Clear(Color.FromArgb(45, 45, 48));
            _with16.SmoothingMode = SmoothingMode.HighQuality;
            _with16.PixelOffsetMode = PixelOffsetMode.HighQuality;
            _with16.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;

            //-- Base
            _with16.FillRectangle(new SolidBrush(BGColor), Base);

            //-- Text
            _with16.DrawString(Text, Font, new SolidBrush(ForeColor), new Point(4, 6), ForeverLibrary.NearSF);

            //-- Button
            GP.Reset();
            GP.AddRectangle(Button);
            _with16.SetClip(GP);
            _with16.FillRectangle(new SolidBrush(BaseColor), Button);
            _with16.ResetClip();

            //-- Lines
            _with16.DrawLine(Pens.White, W - 10, 6, W - 30, 6);
            _with16.DrawLine(Pens.White, W - 10, 12, W - 30, 12);
            _with16.DrawLine(Pens.White, W - 10, 18, W - 30, 18);

            G.Dispose();
            e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
            e.Graphics.DrawImageUnscaled(B, 0, 0);
            B.Dispose();
        }
    }

    #endregion
}