// ***********************************************************************

 // Assembly         : HZH_Controls

 // Created          : 2019-09-09

 //

 // ***********************************************************************

 // <copyright file="UCSignalLamp.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.Linq;

 using System.Text;

 using System.Windows.Forms;

 using System.Drawing;

 using System.Drawing.Drawing2D;

 using System.ComponentModel;

 namespace HZH_Controls.Controls.FactoryControls.Lamp

 {

     /// <summary>

     /// Class UCSignalLamp.

     /// Implements the <see cref="System.Windows.Forms.UserControl" />

     /// </summary>

     /// <seealso cref="System.Windows.Forms.UserControl" />

     public class UCSignalLamp : UserControl

     {

         /// <summary>

         /// The is show border

         /// </summary>

         private bool isShowBorder = false;

         /// <summary>

         /// Gets or sets a value indicating whether this instance is show border.

         /// </summary>

         /// <value><c>true</c> if this instance is show border; otherwise, <c>false</c>.</value>

         [Description("是否显示边框"), Category("自定义")]

         public bool IsShowBorder

         {

             get { return isShowBorder; }

             set

             {

                 isShowBorder = value;

                 Refresh();

             }

         }

         /// <summary>

         /// The lamp color

         /// </summary>

         private Color[] lampColor = new Color[] { Color.FromArgb(, , ) };

         /// <summary>

         /// Gets or sets the color of the lamp.

         /// </summary>

         /// <value>The color of the lamp.</value>

         [Description("灯颜色，当需要闪烁时，至少需要2个及以上颜色，不需要闪烁则至少需要1个颜色"), Category("自定义")]

         public Color[] LampColor

         {

             get { return lampColor; }

             set

             {

                 if (value == null || value.Length <= )

                     return;

                 lampColor = value;

                 Refresh();

             }

         }

         /// <summary>

         /// The is highlight

         /// </summary>

         private bool isHighlight = true;

         /// <summary>

         /// Gets or sets a value indicating whether this instance is highlight.

         /// </summary>

         /// <value><c>true</c> if this instance is highlight; otherwise, <c>false</c>.</value>

         [Description("是否高亮显示"), Category("自定义")]

         public bool IsHighlight

         {

             get { return isHighlight; }

             set

             {

                 isHighlight = value;

                 Refresh();

             }

         }

         /// <summary>

         /// The twinkle speed

         /// </summary>

         private int twinkleSpeed = ;

         /// <summary>

         /// Gets or sets the twinkle speed.

         /// </summary>

         /// <value>The twinkle speed.</value>

         [Description("闪烁间隔时间（毫秒），当为0时不闪烁"), Category("自定义")]

         public int TwinkleSpeed

         {

             get { return twinkleSpeed; }

             set

             {

                 if (value < )

                     return;

                 twinkleSpeed = value;

                 if (value ==  || lampColor.Length <= )

                 {

                     timer.Enabled = false;

                 }

                 else

                 {

                     intColorIndex = ;

                     timer.Interval = value;

                     timer.Enabled = true;

                 }

                 Refresh();

             }

         }

         /// <summary>

         /// The timer

         /// </summary>

         Timer timer;

         /// <summary>

         /// The int color index

         /// </summary>

         int intColorIndex = ;

         /// <summary>

         /// Initializes a new instance of the <see cref="UCSignalLamp"/> class.

         /// </summary>

         public UCSignalLamp()

         {

             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.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;

             this.Size = new Size(, );

             this.SizeChanged += UCSignalLamp_SizeChanged;

             timer = new Timer();

             timer.Interval = ;

             timer.Tick += timer_Tick;

         }

         /// <summary>

         /// Handles the Tick event of the timer control.

         /// </summary>

         /// <param name="sender">The source of the event.</param>

         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>

         void timer_Tick(object sender, EventArgs e)

         {

             intColorIndex++;

             if (intColorIndex >= lampColor.Length)

                 intColorIndex = ;

             Refresh();

         }

         /// <summary>

         /// Handles the SizeChanged event of the UCSignalLamp control.

         /// </summary>

         /// <param name="sender">The source of the event.</param>

         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>

         void UCSignalLamp_SizeChanged(object sender, EventArgs e)

         {

             var maxSize = Math.Min(this.Width, this.Height);

             if (this.Width != maxSize)

                 this.Width = maxSize;

             if (this.Height != maxSize)

                 this.Height = maxSize;

         }

         /// <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();

             Color c1 = lampColor[intColorIndex];

             g.FillEllipse(new SolidBrush(c1), this.ClientRectangle);

             if (isHighlight)

             {

                 GraphicsPath gp = new GraphicsPath();

                 Rectangle rec = new Rectangle(, , this.Width - , this.Height - );

                 gp.AddEllipse(rec);

                 Color[] surroundColor = new Color[] { c1 };

                 PathGradientBrush pb = new PathGradientBrush(gp);

                 pb.CenterColor = Color.White;

                 pb.SurroundColors = surroundColor;

                 g.FillPath(pb, gp);

             }

             if (isShowBorder)

             {

                 g.DrawEllipse(new Pen(new SolidBrush(this.BackColor), ), new Rectangle(, , this.Width - , this.Height - ));

             }

         }

     }

 }