// ***********************************************************************
// Assembly         : HZH_Controls
// Created          : 08-17-2019
//
// ***********************************************************************
// <copyright file="UCStep.cs">
//     Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
// </copyright>
//
// Blog: https://www.cnblogs.com/bfyx
// GitHub：https://github.com/kwwwvagaa/NetWinformControl
// gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
//
// If you use this code, please keep this note.
// ***********************************************************************
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace HZH_Controls.Controls
{
    /// <summary>
    /// Class UCStep.
    /// Implements the <see cref="System.Windows.Forms.UserControl" />
    /// </summary>
    /// <seealso cref="System.Windows.Forms.UserControl" />
    [DefaultEvent("IndexChecked")]
    public partial class UCStep : UserControl
    {

        /// <summary>
        /// Occurs when [index checked].
        /// </summary>
        [Description("步骤更改事件"), Category("自定义")]
        public event EventHandler IndexChecked;

        /// <summary>
        /// The m step back color
        /// </summary>
        private Color m_stepBackColor = Color.FromArgb(189, 189, 189);
        /// <summary>
        /// 步骤背景色
        /// </summary>
        /// <value>The color of the step back.</value>
        [Description("步骤背景色"), Category("自定义")]
        public Color StepBackColor
        {
            get { return m_stepBackColor; }
            set
            {
                m_stepBackColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m step fore color
        /// </summary>
        private Color m_stepForeColor = Color.FromArgb(255, 77, 59);
        /// <summary>
        /// 步骤前景色
        /// </summary>
        /// <value>The color of the step fore.</value>
        [Description("步骤前景色"), Category("自定义")]
        public Color StepForeColor
        {
            get { return m_stepForeColor; }
            set
            {
                m_stepForeColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m step font color
        /// </summary>
        private Color m_stepFontColor = Color.White;
        /// <summary>
        /// 步骤文字颜色
        /// </summary>
        /// <value>The color of the step font.</value>
        [Description("步骤文字景色"), Category("自定义")]
        public Color StepFontColor
        {
            get { return m_stepFontColor; }
            set
            {
                m_stepFontColor = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m step width
        /// </summary>
        private int m_stepWidth = 35;
        /// <summary>
        /// 步骤宽度
        /// </summary>
        /// <value>The width of the step.</value>
        [Description("步骤宽度景色"), Category("自定义")]
        public int StepWidth
        {
            get { return m_stepWidth; }
            set
            {
                m_stepWidth = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m steps
        /// </summary>
        private string[] m_steps = new string[] { "step1", "step2", "step3" };

        /// <summary>
        /// Gets or sets the steps.
        /// </summary>
        /// <value>The steps.</value>
        [Description("步骤"), Category("自定义")]
        public string[] Steps
        {
            get { return m_steps; }
            set
            {
                if (m_steps == null || m_steps.Length <= 1)
                    return;
                m_steps = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m step index
        /// </summary>
        private int m_stepIndex = 0;

        /// <summary>
        /// Gets or sets the index of the step.
        /// </summary>
        /// <value>The index of the step.</value>
        [Description("步骤位置"), Category("自定义")]
        public int StepIndex
        {
            get { return m_stepIndex; }
            set
            {
                if (value > Steps.Length)
                    return;
                m_stepIndex = value;
                Refresh();
                if (IndexChecked != null)
                {
                    IndexChecked(this, null);
                }
            }
        }

        /// <summary>
        /// The m line width
        /// </summary>
        private int m_lineWidth = 2;

        /// <summary>
        /// Gets or sets the width of the line.
        /// </summary>
        /// <value>The width of the line.</value>
        [Description("连接线宽度,最小2"), Category("自定义")]
        public int LineWidth
        {
            get { return m_lineWidth; }
            set
            {
                if (value < 2)
                    return;
                m_lineWidth = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m img completed
        /// </summary>
        private Image m_imgCompleted = null;
        /// <summary>
        /// Gets or sets the img completed.
        /// </summary>
        /// <value>The img completed.</value>
        [Description("已完成步骤图片，当不为空时，已完成步骤将不再显示数字,建议24*24大小"), Category("自定义")]
        public Image ImgCompleted
        {
            get { return m_imgCompleted; }
            set
            {
                m_imgCompleted = value;
                Refresh();
            }
        }

        /// <summary>
        /// The m LST cache rect
        /// </summary>
        List<Rectangle> m_lstCacheRect = new List<Rectangle>();

        /// <summary>
        /// Initializes a new instance of the <see cref="UCStep" /> class.
        /// </summary>
        public UCStep()
        {
            InitializeComponent();
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.DoubleBuffer, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
            this.SetStyle(ControlStyles.Selectable, true);
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
            this.SetStyle(ControlStyles.UserPaint, true);
            this.MouseDown += UCStep_MouseDown;
        }

        /// <summary>
        /// Handles the MouseDown event of the UCStep control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="MouseEventArgs" /> instance containing the event data.</param>
        void UCStep_MouseDown(object sender, MouseEventArgs e)
        {
            var index = m_lstCacheRect.FindIndex(p => p.Contains(e.Location));
            if (index >= 0)
            {
                StepIndex = index + 1;
            }
        }

        /// <summary>
        /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
        /// </summary>
        /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);
            var g = e.Graphics;
            g.SetGDIHigh();

            if (m_steps != null && m_steps.Length > 0)
            {
                System.Drawing.SizeF sizeFirst = g.MeasureString(m_steps[0], this.Font);
                int y = (this.Height - m_stepWidth - 10 - (int)sizeFirst.Height) / 2;
                if (y < 0)
                    y = 0;

                int intTxtY = y + m_stepWidth + 10;
                int intLeft = 0;
                if (sizeFirst.Width > m_stepWidth)
                {
                    intLeft = (int)(sizeFirst.Width - m_stepWidth) / 2 + 1;
                }

                int intRight = 0;
                System.Drawing.SizeF sizeEnd = g.MeasureString(m_steps[m_steps.Length - 1], this.Font);
                if (sizeEnd.Width > m_stepWidth)
                {
                    intRight = (int)(sizeEnd.Width - m_stepWidth) / 2 + 1;
                }

                int intSplitWidth = 20;
                intSplitWidth = (this.Width - m_steps.Length - (m_steps.Length * m_stepWidth) - intRight - intLeft) / (m_steps.Length - 1);
                if (intSplitWidth < 20)
                    intSplitWidth = 20;
                m_lstCacheRect = new List<Rectangle>();
                for (int i = 0; i < m_steps.Length; i++)
                {
                    #region 画圆，横线
                    Rectangle rectEllipse = new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth), y), new Size(m_stepWidth, m_stepWidth));
                    m_lstCacheRect.Add(rectEllipse);
                    g.FillEllipse(new SolidBrush(m_stepBackColor), rectEllipse);

                    if (m_stepIndex > i)
                    {
                        g.FillEllipse(new SolidBrush(m_stepForeColor), new Rectangle(new Point(intLeft + i * (m_stepWidth + intSplitWidth) + 2, y + 2), new Size(m_stepWidth - 4, m_stepWidth - 4)));

                    }
                    if (m_stepIndex > i && m_imgCompleted != null)
                    {
                        g.DrawImage(m_imgCompleted, new Rectangle(new Point((intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - 24) / 2), y + (m_stepWidth - 24) / 2), new Size(24, 24)), 0, 0, m_imgCompleted.Width, m_imgCompleted.Height, GraphicsUnit.Pixel, null);
                    }
                    else
                    {
                        System.Drawing.SizeF _numSize = g.MeasureString((i + 1).ToString(), this.Font);
                        g.DrawString((i + 1).ToString(), Font, new SolidBrush(m_stepFontColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)_numSize.Width) / 2 + 1, y + (m_stepWidth - (int)_numSize.Height) / 2 + 1));
                    }
                    #endregion

                    System.Drawing.SizeF sizeTxt = g.MeasureString(m_steps[i], this.Font);
                    g.DrawString(m_steps[i], Font, new SolidBrush(m_stepIndex > i ? m_stepForeColor : m_stepBackColor), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + (m_stepWidth - (int)sizeTxt.Width) / 2 + 1, intTxtY));
                }

                for (int i = 0; i < m_steps.Length; i++)
                {
                    if (m_stepIndex > i)
                    {
                        if (i != m_steps.Length - 1)
                        {
                            if (m_stepIndex == i + 1)
                            {
                                g.DrawLine(new Pen(m_stepForeColor, m_lineWidth), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth - 3, y + ((m_stepWidth) / 2)), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / 2, y + ((m_stepWidth) / 2)));
                                g.DrawLine(new Pen(m_stepBackColor, m_lineWidth), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth + intSplitWidth / 2, y + ((m_stepWidth) / 2)), new Point(intLeft + (i + 1) * (m_stepWidth + intSplitWidth) + 10, y + ((m_stepWidth) / 2)));
                            }
                            else
                            {
                                g.DrawLine(new Pen(m_stepForeColor, m_lineWidth), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth - 3, y + ((m_stepWidth) / 2)), new Point(intLeft + (i + 1) * (m_stepWidth + intSplitWidth) + 10, y + ((m_stepWidth) / 2)));
                            }
                        }
                    }
                    else
                    {
                        if (i != m_steps.Length - 1)
                        {
                            g.DrawLine(new Pen(m_stepBackColor, m_lineWidth), new Point(intLeft + i * (m_stepWidth + intSplitWidth) + m_stepWidth - 3, y + ((m_stepWidth) / 2)), new Point(intLeft + (i + 1) * (m_stepWidth + intSplitWidth) + 10, y + ((m_stepWidth) / 2)));
                        }
                    }
                }
            }

        }
    }
}
