using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;

namespace JinYuan.ControlLib
{
    public partial class ProcessEllipse : UserControl
    {
        private bool _isRefreshPending = false;
        private SolidBrush _backEllipseBrush;
        private SolidBrush _coreEllipseBrush;
        private SolidBrush _valueBrush;
        private SolidBrush _foreColorBrush;
        private Pen _coreEllipsePen;
        private Pen _valueArcPen;

        public ProcessEllipse()
        {
            InitializeComponent();
            SetStyle(ControlStyles.AllPaintingInWmPaint |
                     ControlStyles.DoubleBuffer |
                     ControlStyles.ResizeRedraw |
                     ControlStyles.Selectable |
                     ControlStyles.SupportsTransparentBackColor |
                     ControlStyles.UserPaint |
                     ControlStyles.OptimizedDoubleBuffer, true);
            UpdateStyles();

            ForeColor = Color.White;
            Font = new Font("Arial Unicode MS", 20);

            InitDrawingObjects();
        }

        #region 减少闪烁
        protected override CreateParams CreateParams
        {
            get
            {
                CreateParams cp = base.CreateParams;
                cp.ExStyle |= 0x02000000;
                return cp;
            }
        }
        #endregion

        [Description("值改变事件"), Category("自定义")]
        public event EventHandler ValueChanged;

        #region 私有字段
        private Color m_backEllipseColor = Color.FromArgb(22, 160, 133);
        private Color m_coreEllipseColor = Color.FromArgb(180, 180, 180);
        private Color m_valueColor = Color.FromArgb(255, 77, 59);
        private bool m_isShowCoreEllipseBorder = true;
        private ShowType m_showType = ShowType.PPM;
        private ValueType m_valueType = ValueType.Percent;
        private ValueFloatOrInt m_valueFloatOrInt = ValueFloatOrInt.Int;
        private int m_valueWidth = 30;
        private int m_valueMargin = 5;
        private int m_maxValue = 100;
        private int m_intValue = 0;
        private float m_floatValue = 0.00f;
        private Font m_font = new Font("Arial Unicode MS", 20);
        Color m_foreColor = Color.White;
        private ShowStyleType m_showStyleType = ShowStyleType.Ring;
        #endregion


        #region 公共属性

        /// <summary>
        /// 圆背景色
        /// </summary>
        [Description("圆背景色"), Category("自定义")]
        public Color BackEllipseColor
        {
            get { return m_backEllipseColor; }
            set
            {
                m_backEllipseColor = value;
                //ControlRefreshExtension.RefreshWithMonitor(this);

                if (m_backEllipseColor == value) return; // 判重：值不变不刷新
                m_backEllipseColor = value;
                _backEllipseBrush?.Dispose();
                _backEllipseBrush = new SolidBrush(value);
                ScheduleRefresh(); // 延迟刷新
            }
        }

       
        /// <summary>
        /// 内圆颜色，ShowType=Ring 有效
        /// </summary>
        [Description("内圆颜色，ShowType=Ring 有效"), Category("自定义")]
        public Color CoreEllipseColor
        {
            get { return m_coreEllipseColor; }
            set
            {
                m_coreEllipseColor = value;
                if (m_coreEllipseColor == value) return;
                m_coreEllipseColor = value;
                _coreEllipseBrush?.Dispose();
                _coreEllipseBrush = new SolidBrush(value);
                ScheduleRefresh();
            }
        }



        [Description("值圆颜色"), Category("自定义")]
        public Color ValueColor
        {
            get { return m_valueColor; }
            set
            {
                if (m_valueColor == value) return;
                m_valueColor = value;
                _valueBrush?.Dispose();
                _valueBrush = new SolidBrush(value);
                _coreEllipsePen?.Dispose();
                _coreEllipsePen = new Pen(value, 2);
                _valueArcPen?.Dispose();
                _valueArcPen = new Pen(value, m_valueWidth - m_valueMargin * 2);
                ScheduleRefresh();
            }
        }

        /// <summary>
        /// 内圆是否显示边框，ShowType=Ring 有效
        /// </summary>
        [Description("内圆是否显示边框，ShowType=Ring 有效"), Category("自定义")]
        public bool IsShowCoreEllipseBorder
        {
            get { return m_isShowCoreEllipseBorder; }
            set
            {
                if (m_isShowCoreEllipseBorder == value) return;
                m_isShowCoreEllipseBorder = value;
                ScheduleRefresh();
            }
        }

        /// <summary>
        /// 值文字类型
        /// </summary>
        [Description("显示类型"), Category("自定义")]
        public ShowType ShowType
        {
            get { return m_showType; }
            set
            {
                if (m_showType == value) return;
                m_showType = value;
                UpdataMaxValue();
                ScheduleRefresh();
            }
        }


        /// <summary>
        /// 值文字类型
        /// </summary>
        [Description("值文字类型，Percent-百分比；Absolute-数值"), Category("自定义")]
        public ValueType ValueType
        {
            get { return m_valueType; }
            set
            {
                if (m_valueType == value) return;
                m_valueType = value;
                ScheduleRefresh();
            }
        }


        /// <summary>
        /// 值文字类型
        /// </summary>
        [Description("值类型"), Category("自定义")]
        public ValueFloatOrInt ValueFloatOrInt
        {
            get { return m_valueFloatOrInt; }
            set
            {
                if (m_valueFloatOrInt == value) return;
                m_valueFloatOrInt = value;
                ScheduleRefresh();
            }
        }


        /// <summary>
        /// 外圆值宽度
        /// </summary>
        [Description("外圆值宽度，ShowType=Ring 有效"), Category("自定义")]
        public int ValueWidth
        {
            get { return m_valueWidth; }
            set
            {
                if (value <= 0 || value > Math.Min(this.Width, this.Height) || m_valueWidth == value)
                    return;
                m_valueWidth = value;
                _valueArcPen?.Dispose();
                _valueArcPen = new Pen(m_valueColor, value - m_valueMargin * 2);
                ScheduleRefresh();
            }
        }

        /// <summary>
        /// 外圆值间距
        /// </summary>
        [Description("外圆值间距"), Category("自定义")]
        public int ValueMargin
        {
            get { return m_valueMargin; }
            set
            {
                if (value < 0 || m_valueMargin >= m_valueWidth || m_valueMargin == value)
                    return;
                m_valueMargin = value;
                _valueArcPen?.Dispose();
                _valueArcPen = new Pen(m_valueColor, m_valueWidth - value * 2);
                ScheduleRefresh();
            }
        }

        /// <summary>
        /// 最大值
        /// </summary>
        [Description("最大值"), Category("自定义")]
        public int MaxValue
        {
            get { return m_maxValue; }
            set
            {
                if (m_maxValue == value) return;
                m_maxValue = value;
                ScheduleRefresh();
            }
        }

        /// <summary>
        /// 当前值
        /// </summary>
        [Description("当前值整数，ValueFloatOrInt=Int 有效"), Category("自定义")]
        public int IntValue
        {
            get { return m_intValue; }
            set
            {
                if (m_maxValue < value || value < 0 || m_intValue == value)
                    return;
                m_intValue = value;
                ValueChanged?.Invoke(this, null); // 简化事件调用
                ScheduleRefresh();
            }
        }

        /// <summary>
        /// 当前值
        /// </summary>
        [Description("当前值浮点数,ValueFloatOrInt=Float 有效"), Category("自定义")]
        public float FloatValue
        {
            get { return m_floatValue; }
            set
            {
                if (m_maxValue < value || value < 0 || Math.Abs(m_floatValue - value) < 0.001f)
                    return;
                m_floatValue = value;
                ValueChanged?.Invoke(this, null);
                ScheduleRefresh();
            }
        }

        [Description("文字字体"), Category("自定义")]
        public override Font Font
        {
            get
            {
                return m_font;
            }
            set
            {
                if (m_font == value) return;
                m_font?.Dispose(); // 释放旧字体
                m_font = value;
                ScheduleRefresh();
            }
        }

        [Description("文字颜色"), Category("自定义")]
        public override Color ForeColor
        {
            get
            {
                return m_foreColor;
            }
            set
            {
                if (m_foreColor == value) return;
                m_foreColor = value;
                _foreColorBrush?.Dispose();
                _foreColorBrush = new SolidBrush(value);
                ScheduleRefresh();
            }
        }


        [Description("显示样式"), Category("自定义")]
        public ShowStyleType ShowStyleType
        {
            get { return m_showStyleType; }
            set
            {
                if (m_showStyleType == value) return;
                m_showStyleType = value;
                ScheduleRefresh();
            }
        }

        #endregion

        ///// <summary>
        ///// 更新最大值
        ///// </summary>
        //private void UpdataMaxValue()
        //{
        //    switch (m_showType)
        //    {
        //        case ShowType.PPM:
        //            this.m_maxValue = 100;
        //            break;
        //        case ShowType.稼动率:
        //            this.m_maxValue = 100;
        //            break;
        //    }

        //}


        //protected override void OnPaint(PaintEventArgs e)
        //{
        //    base.OnPaint(e);

        //    var g = e.Graphics;
        //    g.SmoothingMode = SmoothingMode.AntiAlias;  //使绘图质量最高，即消除锯齿
        //    g.InterpolationMode = InterpolationMode.HighQualityBicubic;
        //    g.CompositingQuality = CompositingQuality.HighQuality;

        //    int intWidth = Math.Min(this.Size.Width, this.Size.Height);
        //    //底圆
        //    g.FillEllipse(new SolidBrush(m_backEllipseColor), new Rectangle(new Point(0, 0), new Size(intWidth, intWidth)));
        //    if (m_showStyleType == ShowStyleType.Ring)
        //    {
        //        //中心圆
        //        int intCore = intWidth - m_valueWidth * 2;
        //        g.FillEllipse(new SolidBrush(m_coreEllipseColor), new Rectangle(new Point(m_valueWidth, m_valueWidth), new Size(intCore, intCore)));
        //        //中心圆边框
        //        if (m_isShowCoreEllipseBorder)
        //        {
        //            g.DrawEllipse(new Pen(m_valueColor, 2), new Rectangle(new Point(m_valueWidth + 1, m_valueWidth + 1), new Size(intCore - 1, intCore - 1)));
        //        }
        //        if (m_valueFloatOrInt == ValueFloatOrInt.Int)
        //        {
        //            if (m_intValue >= 0 && m_maxValue > 0)
        //            {
        //                int fltPercent = (int)m_intValue / (int)m_maxValue;
        //                if (fltPercent > 1)
        //                {
        //                    fltPercent = 1;
        //                }

        //                g.DrawArc(new Pen(m_valueColor, m_valueWidth - m_valueMargin * 2), new RectangleF(new Point(m_valueWidth / 2 + m_valueMargin / 4, m_valueWidth / 2 + m_valueMargin / 4), new SizeF(intWidth - m_valueWidth - m_valueMargin / 2 + (m_valueMargin == 0 ? 0 : 1), intWidth - m_valueWidth - m_valueMargin / 2 + (m_valueMargin == 0 ? 0 : 1))), -90, fltPercent * 360);

        //                string strValueText = m_valueType == ValueType.Percent ? fltPercent.ToString("0%") : m_intValue.ToString();
        //                System.Drawing.SizeF _txtSize = g.MeasureString(strValueText, this.Font);
        //                g.DrawString(strValueText, this.Font, new SolidBrush(this.ForeColor), new PointF((intWidth - _txtSize.Width) / 2 + 1, (intWidth - _txtSize.Height) / 2 + 1));
        //            }
        //        }
        //        else
        //        {
        //            if (m_floatValue >= 0 && m_maxValue > 0)
        //            {
        //                float fltPercent = (float)m_floatValue / (float)m_maxValue;
        //                if (fltPercent > 1f)
        //                {
        //                    fltPercent = 1f;
        //                }

        //                g.DrawArc(new Pen(m_valueColor, m_valueWidth - m_valueMargin * 2), new RectangleF(new Point(m_valueWidth / 2 + m_valueMargin / 4, m_valueWidth / 2 + m_valueMargin / 4), new SizeF(intWidth - m_valueWidth - m_valueMargin / 2 + (m_valueMargin == 0 ? 0 : 1), intWidth - m_valueWidth - m_valueMargin / 2 + (m_valueMargin == 0 ? 0 : 1))), -90, fltPercent * 360);
        //                string strValueText = m_valueType == ValueType.Percent ? fltPercent.ToString("0%") : m_floatValue.ToString("f2");
        //                System.Drawing.SizeF _txtSize = g.MeasureString(strValueText, this.Font);
        //                g.DrawString(strValueText, this.Font, new SolidBrush(this.ForeColor), new PointF((intWidth - _txtSize.Width) / 2 + 1, (intWidth - _txtSize.Height) / 2 + 1));
        //            }
        //        }

        //    }
        //    else
        //    {
        //        if (m_valueFloatOrInt == ValueFloatOrInt.Int)
        //        {
        //            if (m_intValue >= 0 && m_maxValue > 0)
        //            {
        //                int fltPercent = (int)m_intValue / (int)m_maxValue;
        //                if (fltPercent > 1)
        //                {
        //                    fltPercent = 1;
        //                }

        //                g.FillPie(new SolidBrush(m_valueColor), new Rectangle(m_valueMargin, m_valueMargin, intWidth - m_valueMargin * 2, intWidth - m_valueMargin * 2), -90, fltPercent * 360);

        //                string strValueText = m_valueType == ValueType.Percent ? fltPercent.ToString("0%") : m_intValue.ToString();
        //                System.Drawing.SizeF _txtSize = g.MeasureString(strValueText, this.Font);
        //                g.DrawString(strValueText, this.Font, new SolidBrush(this.ForeColor), new PointF((intWidth - _txtSize.Width) / 2 + 1, (intWidth - _txtSize.Height) / 2 + 1));
        //            }
        //        }
        //        else
        //        {
        //            if (m_floatValue >= 0 && m_maxValue > 0)
        //            {
        //                float fltPercent = (float)m_floatValue / (float)m_maxValue;
        //                if (fltPercent > 1f)
        //                {
        //                    fltPercent = 1f;
        //                }

        //                g.FillPie(new SolidBrush(m_valueColor), new Rectangle(m_valueMargin, m_valueMargin, intWidth - m_valueMargin * 2, intWidth - m_valueMargin * 2), -90, fltPercent * 360);
        //                string strValueText = m_valueType == ValueType.Percent ? fltPercent.ToString("0%") : m_floatValue.ToString("f2");
        //                System.Drawing.SizeF _txtSize = g.MeasureString(strValueText, this.Font);
        //                g.DrawString(strValueText, this.Font, new SolidBrush(this.ForeColor), new PointF((intWidth - _txtSize.Width) / 2 + 1, (intWidth - _txtSize.Height) / 2 + 1));
        //            }
        //        }

        //    }

        #region 核心优化方法
        /// <summary>
        /// 初始化绘图对象
        /// </summary>
        private void InitDrawingObjects()
        {
            _backEllipseBrush = new SolidBrush(m_backEllipseColor);
            _coreEllipseBrush = new SolidBrush(m_coreEllipseColor);
            _valueBrush = new SolidBrush(m_valueColor);
            _foreColorBrush = new SolidBrush(m_foreColor);
            _coreEllipsePen = new Pen(m_valueColor, 2);
            _valueArcPen = new Pen(m_valueColor, m_valueWidth - m_valueMargin * 2);
        }

        /// <summary>
        /// 延迟刷新
        /// </summary>
        private void ScheduleRefresh()
        {
            if (_isRefreshPending) return;
            _isRefreshPending = true;

            // 先判断控件句柄是否已创建
            if (!this.IsHandleCreated)
            {
                // 句柄未创建时：
                // 1. 注册句柄创建完成的事件，创建后再刷新
                this.HandleCreated += ProcessEllipse_HandleCreated;
                // 2. 直接调用Invalidate（句柄未创建时Invalidate无副作用）
                this.Invalidate();
                _isRefreshPending = false;
                return;
            }

            // 句柄已创建时，使用BeginInvoke延迟刷新
            try
            {
                this.BeginInvoke(new Action(() =>
                {
                    // 双重校验：避免跨线程/句柄释放导致的异常
                    if (this.IsDisposed || !this.IsHandleCreated)
                    {
                        _isRefreshPending = false;
                        return;
                    }

                    this.Invalidate();
                    _isRefreshPending = false;
                }));
            }
            catch (ObjectDisposedException)
            {
                // 控件已释放时，重置标识
                _isRefreshPending = false;
            }
        }

        /// <summary>
        /// 句柄创建完成后触发的刷新逻辑
        /// </summary>
        private void ProcessEllipse_HandleCreated(object sender, EventArgs e)
        {
            // 取消事件注册，避免重复触发
            this.HandleCreated -= ProcessEllipse_HandleCreated;
            // 句柄创建完成后，执行一次刷新
            if (!_isRefreshPending)
            {
                this.Invalidate();
            }
        }

        /// <summary>
        /// 更新最大值
        /// </summary>
        private void UpdataMaxValue()
        {
            switch (m_showType)
            {
                case ShowType.PPM:
                case ShowType.稼动率:
                    m_maxValue = 100;
                    break;
            }
        }
        #endregion

        #region 重写OnPaint（复用绘图对象 + 优化逻辑）
        protected override void OnPaint(PaintEventArgs e)
        {
            base.OnPaint(e);

            var g = e.Graphics;
            // 优化绘图质量（只设置一次，避免重复赋值）
            g.SmoothingMode = SmoothingMode.AntiAlias;
            g.InterpolationMode = InterpolationMode.HighQualityBicubic;
            g.CompositingQuality = CompositingQuality.HighQuality;
            g.Clear(BackColor); // 统一清背景，减少闪烁

            int intWidth = Math.Min(Size.Width, Size.Height);
            if (intWidth == 0) return; // 避免除以0

            // 绘制底圆（复用画刷）
            g.FillEllipse(_backEllipseBrush, new Rectangle(0, 0, intWidth, intWidth));

            if (m_showStyleType == ShowStyleType.Ring)
            {
                // 绘制中心圆（复用画刷）
                int intCore = intWidth - m_valueWidth * 2;
                g.FillEllipse(_coreEllipseBrush, new Rectangle(m_valueWidth, m_valueWidth, intCore, intCore));

                // 绘制中心圆边框（复用画笔）
                if (m_isShowCoreEllipseBorder)
                {
                    g.DrawEllipse(_coreEllipsePen, new Rectangle(m_valueWidth + 1, m_valueWidth + 1, intCore - 1, intCore - 1));
                }

                // 绘制数值圆弧/文字
                DrawValueContent(g, intWidth);
            }
            else
            {
                // 绘制扇形样式
                DrawSectorContent(g, intWidth);
            }
        }

        /// <summary>
        /// 绘制圆环样式的数值内容（复用逻辑）
        /// </summary>
        private void DrawValueContent(Graphics g, int intWidth)
        {
            float percent = 0f;
            string strValueText = string.Empty;

            if (m_valueFloatOrInt == ValueFloatOrInt.Int)
            {
                if (m_intValue >= 0 && m_maxValue > 0)
                {
                    percent = (float)m_intValue / m_maxValue;
                    percent = Math.Min(percent, 1f);
                    strValueText = m_valueType == ValueType.Percent ? percent.ToString("0%") : m_intValue.ToString();
                }
            }
            else
            {
                if (m_floatValue >= 0 && m_maxValue > 0)
                {
                    percent = m_floatValue / m_maxValue;
                    percent = Math.Min(percent, 1f);
                    strValueText = m_valueType == ValueType.Percent ? percent.ToString("0%") : m_floatValue.ToString("f2");
                }
            }

            // 绘制圆弧（复用画笔）
            if (percent > 0)
            {
                var arcRect = new RectangleF(
                    m_valueWidth / 2 + m_valueMargin / 4,
                    m_valueWidth / 2 + m_valueMargin / 4,
                    intWidth - m_valueWidth - m_valueMargin / 2 + (m_valueMargin == 0 ? 0 : 1),
                    intWidth - m_valueWidth - m_valueMargin / 2 + (m_valueMargin == 0 ? 0 : 1));
                g.DrawArc(_valueArcPen, arcRect, -90, percent * 360);
            }

            // 绘制文字（复用画刷）
            if (!string.IsNullOrEmpty(strValueText))
            {
                var txtSize = g.MeasureString(strValueText, Font);
                g.DrawString(strValueText, Font, _foreColorBrush,
                    (intWidth - txtSize.Width) / 2 + 1,
                    (intWidth - txtSize.Height) / 2 + 1);
            }
        }

        /// <summary>
        /// 绘制扇形样式的数值内容（复用逻辑）
        /// </summary>
        private void DrawSectorContent(Graphics g, int intWidth)
        {
            float percent = 0f;
            string strValueText = string.Empty;

            if (m_valueFloatOrInt == ValueFloatOrInt.Int)
            {
                if (m_intValue >= 0 && m_maxValue > 0)
                {
                    percent = (float)m_intValue / m_maxValue;
                    percent = Math.Min(percent, 1f);
                    strValueText = m_valueType == ValueType.Percent ? percent.ToString("0%") : m_intValue.ToString();
                }
            }
            else
            {
                if (m_floatValue >= 0 && m_maxValue > 0)
                {
                    percent = m_floatValue / m_maxValue;
                    percent = Math.Min(percent, 1f);
                    strValueText = m_valueType == ValueType.Percent ? percent.ToString("0%") : m_floatValue.ToString("f2");
                }
            }

            // 绘制扇形（复用画刷）
            if (percent > 0)
            {
                var pieRect = new Rectangle(m_valueMargin, m_valueMargin,
                    intWidth - m_valueMargin * 2, intWidth - m_valueMargin * 2);
                g.FillPie(_valueBrush, pieRect, -90, percent * 360);
            }

            // 绘制文字（复用画刷）
            if (!string.IsNullOrEmpty(strValueText))
            {
                var txtSize = g.MeasureString(strValueText, Font);
                g.DrawString(strValueText, Font, _foreColorBrush,
                    (intWidth - txtSize.Width) / 2 + 1,
                    (intWidth - txtSize.Height) / 2 + 1);
            }
        }
        #endregion

        #region 释放资源（避免内存泄漏）
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                // 释放缓存的绘图对象
                _backEllipseBrush?.Dispose();
                _coreEllipseBrush?.Dispose();
                _valueBrush?.Dispose();
                _foreColorBrush?.Dispose();
                _coreEllipsePen?.Dispose();
                _valueArcPen?.Dispose();
                m_font?.Dispose(); // 释放字体
                components?.Dispose();
            }
            base.Dispose(disposing);
        }
        #endregion

    }


    public enum ShowType
    {
        /// <summary>
        /// PPM
        /// </summary>
        PPM,
        /// <summary>
        /// 数值
        /// </summary>
        稼动率,
        /// <summary>
        /// 
        /// </summary>
        生产数
    }


    public enum ValueType
    {
        /// <summary>
        /// 百分比
        /// </summary>
        Percent,
        /// <summary>
        /// 数值
        /// </summary>
        Absolute
    }

    public enum ValueFloatOrInt
    {
        /// <summary>
        /// 整数
        /// </summary>
        Int,
        /// <summary>
        /// 浮点数
        /// </summary>
        Float
    }

    public enum ShowStyleType
    {
        /// <summary>
        /// 圆环
        /// </summary>
        Ring,
        /// <summary>
        /// 扇形
        /// </summary>
        Sector
    }
}