using AllBase.Helper;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Work.UserComponents
{
    public partial class UcCheckBox : CheckBox
    {
        public UcCheckBox()
        {
            InitializeComponent();
            this.CheckBoxCheckColor = GlobalConfig.MainColor;
            this.CheckBoxBorderColor = GlobalConfig.BorderColor;
        }

        public UcCheckBox(IContainer container)
        {
            container.Add(this);
            this.CheckBoxCheckColor = GlobalConfig.MainColor;
            this.CheckBoxBorderColor = GlobalConfig.BorderColor;

            InitializeComponent();
        }

        private int checkBoxSize = 12;
        public Color CheckBoxColor = Color.White;
        public Color CheckBoxCheckColor = GlobalConfig.DefaultMainColor;
        public Color CheckBoxBorderColor = GlobalConfig.DefaultBorderColor;

        protected override void OnPaint(PaintEventArgs e)
        {
            //base.OnPaint(e); // 禁用系统绘制全部
            base.OnPaintBackground(e); // 使用系统绘制背景

            //if (e.ClipRectangle.X != 0 || e.ClipRectangle.Y != 0)
            //    return;

            Graphics g = e.Graphics;
            //g.Clear(this.CheckBoxColor);

            //填充背景色
            //g.FillRectangle(new SolidBrush(this.BackColor), e.ClipRectangle);
            g.FillRectangle(new SolidBrush(this.BackColor), this.ClientRectangle);

            Size size = TextRenderer.MeasureText(this.Text, Font);
            e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit; // 或者 AntiAliasGridFit // 平滑字体
            //e.Graphics.DrawString(this.Text, Font, new SolidBrush(this.ForeColor),
            //    new PointF(e.ClipRectangle.X + checkBoxSize + 2 + Padding.Left, e.ClipRectangle.Y + (Height - size.Height) / 2));
            e.Graphics.DrawString(this.Text, Font, new SolidBrush(this.ForeColor),
                new PointF(this.ClientRectangle.X + checkBoxSize + 2 + Padding.Left, this.ClientRectangle.Y + (Height - size.Height) / 2));

            Rectangle rt = new Rectangle();
            rt.X = 0;
            rt.Y = (Height - checkBoxSize) / 2;
            rt.Width = checkBoxSize;
            rt.Height = checkBoxSize;

            if (this.Enabled == false)
                DrawCheckBoxIcon(g, rt, this.Checked, Color.LightGray, Color.DarkGray, Color.Gray);
            else
                DrawCheckBoxIcon(g, rt, this.Checked, this.CheckBoxColor, this.CheckBoxCheckColor, this.CheckBoxBorderColor);
        }

        public static void DrawCheckBoxIcon(Graphics g, Rectangle rt, bool isChecked, Color checkBoxColor, Color checkBoxCheckColor, Color checkBoxBorderColor)
        {
            //绘制圆形（注释此句，以备后用）
            //Brush brush = new SolidBrush(this.Checked ? checkBoxCheckColor : checkBoxColor);
            //g.FillEllipse(brush, 0, (Height - checkBoxSize) / 2, checkBoxSize, checkBoxSize); // 绘制圆形按钮

            Color color = isChecked ? checkBoxCheckColor : checkBoxColor;

            if (isChecked)
            {
                DrawRoundedRectangle(g, rt, 2, color, true);
                DrawRoundedRectangle(g, rt, 2, checkBoxBorderColor);

                // 绘制勾号
                Pen p = new Pen(Color.FromArgb(220, 255, 255, 255), 1);
                //g.DrawLine(Pens.SkyBlue, rt.X + 3, rt.Y + 6, rt.X + 5, rt.Y + 8);
                //g.DrawLine(Pens.SkyBlue, rt.X + 5, rt.Y + 8, rt.X + 9, rt.Y + 4);
                g.DrawLine(p, rt.X + 3, rt.Y + 5, rt.X + 5, rt.Y + 7);
                g.DrawLine(p, rt.X + 5, rt.Y + 7, rt.X + 9, rt.Y + 3);
                g.DrawLine(p, rt.X + 3, rt.Y + 6, rt.X + 5, rt.Y + 8);
                g.DrawLine(p, rt.X + 5, rt.Y + 8, rt.X + 9, rt.Y + 4);
                g.DrawLine(p, rt.X + 3, rt.Y + 7, rt.X + 5, rt.Y + 9);
                g.DrawLine(p, rt.X + 5, rt.Y + 9, rt.X + 9, rt.Y + 5);
            }
            else
            {
                DrawRoundedRectangle(g, rt, 3, color, true);
                DrawRoundedRectangle(g, rt, 3, checkBoxBorderColor);
            }
        }

        public static void DrawRoundedRectangle(Graphics g, Rectangle rect, int radius, Color color, bool isFill = false)
        {
            using (GraphicsPath path = new GraphicsPath())
            {
                path.StartFigure();
                path.AddArc(rect.X, rect.Y, radius * 2, radius * 2, 180, 90); // Upper left corner
                path.AddArc(rect.Right - radius * 2, rect.Y, radius * 2, radius * 2, 270, 90); // Upper right corner
                path.AddArc(rect.Right - radius * 2, rect.Bottom - radius * 2, radius * 2, radius * 2, 0, 90); // Lower right corner
                path.AddArc(rect.X, rect.Bottom - radius * 2, radius * 2, radius * 2, 90, 90); // Lower left corner
                path.CloseFigure();
                //g.FillPath(Brushes.LightBlue, path);
                if (isFill)
                    g.FillPath(new SolidBrush(color), path); // Fill the rounded rectangle
                else
                    g.DrawPath(new Pen(color), path);
            }
        }

        /*
        protected override void OnDrawItem(DrawItemEventArgs e)
        {
            //int ItemsCount = Items.Count;
            //Rectangle rect = new Rectangle(0, 0, e.Bounds.Width, e.Bounds.Height * ItemsCount);
            e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;

            //// 绘制下拉框背景
            //e.Graphics.FillRectangle(new SolidBrush(_BoxCenterColor), rect);
            //// 绘制下拉框边框
            //e.Graphics.DrawRectangle(new Pen(new SolidBrush(_BorderColor)), rect);
            //// 绘制选中文字背景
            //for (int i = 0; i < Items.Count; i++)
            //{
            //    if (SelectedItem != null)
            //    {
            //        if (SelectedItem.ToString() == Items[i].ToString())
            //        {
            //            Rectangle rectSel = new Rectangle(1, e.Bounds.Height * (SelectedIndex), e.Bounds.Width - 2, e.Bounds.Height - 2);
            //            e.Graphics.FillRectangle(new SolidBrush(Color.White), rectSel);
            //        }
            //    }
            //    // 绘制文字
            //    e.Graphics.DrawString(Items[i].ToString(), Font, new SolidBrush(_FontColor), new PointF(0, i * (e.Bounds.Height == 0 ? 16 : e.Bounds.Height)));
            //}

            if (e.Index >= 0)
            {
                e.Graphics.FillRectangle(new SolidBrush(_BoxCenterColor), e.Bounds);
                if ((e.State & DrawItemState.Focus) == DrawItemState.Focus || (e.State & DrawItemState.Selected) == DrawItemState.Selected)
                {
                    // 设置鼠标悬浮ComboBox的item的背景色
                    e.Graphics.FillRectangle(Brushes.White, e.Bounds);
                }
                else if (((e.State & DrawItemState.ComboBoxEdit) != DrawItemState.ComboBoxEdit))
                {
                    // 默认背景
                    e.Graphics.FillRectangle(new SolidBrush(e.BackColor), e.Bounds);
                }
                // 绘制文字
                e.Graphics.DrawString(Items[e.Index].ToString(), Font, new SolidBrush(_FontColor), new PointF(e.Bounds.X, e.Bounds.Y));
            }
        }*/
    }
}