（六十一）c#Winform自定义控件-信号灯（工业）-HZHControls

官网

http://www.hzhcontrols.com

前提

入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。

GitHub：https://github.com/kwwwvagaa/NetWinformControl

码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git

如果觉得写的还行，请点个 star 支持一下吧

欢迎前来交流探讨：企鹅群568015492

麻烦博客下方点个【推荐】，谢谢

NuGet

Install-Package HZH_Controls

用处及效果

准备工作

依然使用GDI+绘画，这个比较简单，就是画圆

开始

新增一个类UCSignalLamp，继承UserControl

添加属性

  1 /// <summary>
  2         /// The is show border
  3         /// </summary>
  4         private bool isShowBorder = false;
  5 
  6         /// <summary>
  7         /// Gets or sets a value indicating whether this instance is show border.
  8         /// </summary>
  9         /// <value><c>true</c> if this instance is show border; otherwise, <c>false</c>.</value>
 10         [Description("是否显示边框"), Category("自定义")]
 11         public bool IsShowBorder
 12         {
 13             get { return isShowBorder; }
 14             set
 15             {
 16                 isShowBorder = value;
 17                 Refresh();
 18             }
 19         }
 20 
 21         /// <summary>
 22         /// The lamp color
 23         /// </summary>
 24         private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };
 25 
 26         /// <summary>
 27         /// Gets or sets the color of the lamp.
 28         /// </summary>
 29         /// <value>The color of the lamp.</value>
 30         [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")]
 31         public Color[] LampColor
 32         {
 33             get { return lampColor; }
 34             set
 35             {
 36                 if (value == null || value.Length <= 0)
 37                     return;
 38                 lampColor = value;
 39                 Refresh();
 40             }
 41         }
 42 
 43         /// <summary>
 44         /// The is highlight
 45         /// </summary>
 46         private bool isHighlight = true;
 47 
 48         /// <summary>
 49         /// Gets or sets a value indicating whether this instance is highlight.
 50         /// </summary>
 51         /// <value><c>true</c> if this instance is highlight; otherwise, <c>false</c>.</value>
 52         [Description("是否高亮显示"), Category("自定义")]
 53         public bool IsHighlight
 54         {
 55             get { return isHighlight; }
 56             set
 57             {
 58                 isHighlight = value;
 59                 Refresh();
 60             }
 61         }
 62 
 63         /// <summary>
 64         /// The twinkle speed
 65         /// </summary>
 66         private int twinkleSpeed = 0;
 67 
 68         /// <summary>
 69         /// Gets or sets the twinkle speed.
 70         /// </summary>
 71         /// <value>The twinkle speed.</value>
 72         [Description("闪烁间隔时间（毫秒），当为0时不闪烁"), Category("自定义")]
 73         public int TwinkleSpeed
 74         {
 75             get { return twinkleSpeed; }
 76             set
 77             {
 78                 if (value < 0)
 79                     return;
 80                 twinkleSpeed = value;
 81                 if (value == 0 || lampColor.Length <= 1)
 82                 {
 83                     timer.Enabled = false;
 84                 }
 85                 else
 86                 {
 87                     intColorIndex = 0;
 88                     timer.Interval = value;
 89                     timer.Enabled = true;
 90                 }
 91                 Refresh();
 92             }
 93         }
 94         /// <summary>
 95         /// The timer
 96         /// </summary>
 97         Timer timer;
 98         /// <summary>
 99         /// The int color index
100         /// </summary>
101         int intColorIndex = 0;

重绘

 1  protected override void OnPaint(PaintEventArgs e)
 2         {
 3             base.OnPaint(e);
 4             var g = e.Graphics;
 5             g.SetGDIHigh();
 6             Color c1 = lampColor[intColorIndex];
 7             g.FillEllipse(new SolidBrush(c1), this.ClientRectangle);
 8 
 9             if (isHighlight)
10             {
11                 GraphicsPath gp = new GraphicsPath();
12 
13                 Rectangle rec = new Rectangle(5, 5, this.Width - 10, this.Height - 10);
14                 gp.AddEllipse(rec);
15 
16                 Color[] surroundColor = new Color[] { c1 };
17                 PathGradientBrush pb = new PathGradientBrush(gp);
18                 pb.CenterColor = Color.White;
19                 pb.SurroundColors = surroundColor;
20                 g.FillPath(pb, gp);
21             }
22 
23             if (isShowBorder)
24             {
25                 g.DrawEllipse(new Pen(new SolidBrush(this.BackColor), 2), new Rectangle(4, 4, this.Width - 8, this.Height - 8));
26             }
27         }

全部代码

  1 // ***********************************************************************
  2 // Assembly         : HZH_Controls
  3 // Created          : 2019-09-09
  4 //
  5 // ***********************************************************************
  6 // <copyright file="UCSignalLamp.cs">
  7 //     Copyright by Huang Zhenghui(黄正辉) All, QQ group:568015492 QQ:623128629 Email:623128629@qq.com
  8 // </copyright>
  9 //
 10 // Blog: https://www.cnblogs.com/bfyx
 11 // GitHub：https://github.com/kwwwvagaa/NetWinformControl
 12 // gitee：https://gitee.com/kwwwvagaa/net_winform_custom_control.git
 13 //
 14 // If you use this code, please keep this note.
 15 // ***********************************************************************
 16 using System;
 17 using System.Collections.Generic;
 18 using System.Linq;
 19 using System.Text;
 20 using System.Windows.Forms;
 21 using System.Drawing;
 22 using System.Drawing.Drawing2D;
 23 using System.ComponentModel;
 24 
 25 namespace HZH_Controls.Controls.FactoryControls.Lamp
 26 {
 27     /// <summary>
 28     /// Class UCSignalLamp.
 29     /// Implements the <see cref="System.Windows.Forms.UserControl" />
 30     /// </summary>
 31     /// <seealso cref="System.Windows.Forms.UserControl" />
 32     public class UCSignalLamp : UserControl
 33     {
 34         /// <summary>
 35         /// The is show border
 36         /// </summary>
 37         private bool isShowBorder = false;
 38 
 39         /// <summary>
 40         /// Gets or sets a value indicating whether this instance is show border.
 41         /// </summary>
 42         /// <value><c>true</c> if this instance is show border; otherwise, <c>false</c>.</value>
 43         [Description("是否显示边框"), Category("自定义")]
 44         public bool IsShowBorder
 45         {
 46             get { return isShowBorder; }
 47             set
 48             {
 49                 isShowBorder = value;
 50                 Refresh();
 51             }
 52         }
 53 
 54         /// <summary>
 55         /// The lamp color
 56         /// </summary>
 57         private Color[] lampColor = new Color[] { Color.FromArgb(255, 77, 59) };
 58 
 59         /// <summary>
 60         /// Gets or sets the color of the lamp.
 61         /// </summary>
 62         /// <value>The color of the lamp.</value>
 63         [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")]
 64         public Color[] LampColor
 65         {
 66             get { return lampColor; }
 67             set
 68             {
 69                 if (value == null || value.Length <= 0)
 70                     return;
 71                 lampColor = value;
 72                 Refresh();
 73             }
 74         }
 75 
 76         /// <summary>
 77         /// The is highlight
 78         /// </summary>
 79         private bool isHighlight = true;
 80 
 81         /// <summary>
 82         /// Gets or sets a value indicating whether this instance is highlight.
 83         /// </summary>
 84         /// <value><c>true</c> if this instance is highlight; otherwise, <c>false</c>.</value>
 85         [Description("是否高亮显示"), Category("自定义")]
 86         public bool IsHighlight
 87         {
 88             get { return isHighlight; }
 89             set
 90             {
 91                 isHighlight = value;
 92                 Refresh();
 93             }
 94         }
 95 
 96         /// <summary>
 97         /// The twinkle speed
 98         /// </summary>
 99         private int twinkleSpeed = 0;
100 
101         /// <summary>
102         /// Gets or sets the twinkle speed.
103         /// </summary>
104         /// <value>The twinkle speed.</value>
105         [Description("闪烁间隔时间（毫秒），当为0时不闪烁"), Category("自定义")]
106         public int TwinkleSpeed
107         {
108             get { return twinkleSpeed; }
109             set
110             {
111                 if (value < 0)
112                     return;
113                 twinkleSpeed = value;
114                 if (value == 0 || lampColor.Length <= 1)
115                 {
116                     timer.Enabled = false;
117                 }
118                 else
119                 {
120                     intColorIndex = 0;
121                     timer.Interval = value;
122                     timer.Enabled = true;
123                 }
124                 Refresh();
125             }
126         }
127         /// <summary>
128         /// The timer
129         /// </summary>
130         Timer timer;
131         /// <summary>
132         /// The int color index
133         /// </summary>
134         int intColorIndex = 0;
135         /// <summary>
136         /// Initializes a new instance of the <see cref="UCSignalLamp"/> class.
137         /// </summary>
138         public UCSignalLamp()
139         {
140             this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
141             this.SetStyle(ControlStyles.DoubleBuffer, true);
142             this.SetStyle(ControlStyles.ResizeRedraw, true);
143             this.SetStyle(ControlStyles.Selectable, true);
144             this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
145             this.SetStyle(ControlStyles.UserPaint, true);
146             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
147             this.Size = new Size(50, 50);
148             this.SizeChanged += UCSignalLamp_SizeChanged;
149             timer = new Timer();
150             timer.Interval = 200;
151             timer.Tick += timer_Tick;
152         }
153 
154         /// <summary>
155         /// Handles the Tick event of the timer control.
156         /// </summary>
157         /// <param name="sender">The source of the event.</param>
158         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
159         void timer_Tick(object sender, EventArgs e)
160         {
161             intColorIndex++;
162             if (intColorIndex >= lampColor.Length)
163                 intColorIndex = 0;
164             Refresh();
165         }
166         /// <summary>
167         /// Handles the SizeChanged event of the UCSignalLamp control.
168         /// </summary>
169         /// <param name="sender">The source of the event.</param>
170         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
171         void UCSignalLamp_SizeChanged(object sender, EventArgs e)
172         {
173             var maxSize = Math.Min(this.Width, this.Height);
174             if (this.Width != maxSize)
175                 this.Width = maxSize;
176             if (this.Height != maxSize)
177                 this.Height = maxSize;
178         }
179 
180         /// <summary>
181         /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
182         /// </summary>
183         /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
184         protected override void OnPaint(PaintEventArgs e)
185         {
186             base.OnPaint(e);
187             var g = e.Graphics;
188             g.SetGDIHigh();
189             Color c1 = lampColor[intColorIndex];
190             g.FillEllipse(new SolidBrush(c1), this.ClientRectangle);
191 
192             if (isHighlight)
193             {
194                 GraphicsPath gp = new GraphicsPath();
195 
196                 Rectangle rec = new Rectangle(5, 5, this.Width - 10, this.Height - 10);
197                 gp.AddEllipse(rec);
198 
199                 Color[] surroundColor = new Color[] { c1 };
200                 PathGradientBrush pb = new PathGradientBrush(gp);
201                 pb.CenterColor = Color.White;
202                 pb.SurroundColors = surroundColor;
203                 g.FillPath(pb, gp);
204             }
205 
206             if (isShowBorder)
207             {
208                 g.DrawEllipse(new Pen(new SolidBrush(this.BackColor), 2), new Rectangle(4, 4, this.Width - 8, this.Height - 8));
209             }
210         }
211     }
212 }

View Code

最后的话

如果你喜欢的话，请到 https://gitee.com/kwwwvagaa/net_winform_custom_control 点个星星吧

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原文地址：https://www.cnblogs.com/bfyx/p/11492401.html

（六十一）c#Winform自定义控件-信号灯（工业）-HZHControls

官网

前提

NuGet

目录

用处及效果

准备工作

开始

最后的话