（六十四）c#Winform自定义控件-温度计（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 企鹅群568015492

麻烦博客下方点个【推荐】，谢谢

NuGet

Install-Package HZH_Controls

目录

https://www.cnblogs.com/bfyx/p/11364884.html

用处及效果

准备工作

依然用GID+画的，不懂请自行百度

开始

添加一个类UCThermometer，继承UserControl

添加一个枚举，来决定显示的温度单位

 1  public enum TemperatureUnit
 2     {
 3         /// <summary>
 4         /// 不显示
 5         /// </summary>
 6         None,
 7         /// <summary>
 8         /// 摄氏度
 9         /// </summary>
10         C,
11         /// <summary>
12         /// 华氏度
13         /// </summary>
14         F,
15         /// <summary>
16         /// 开氏度
17         /// </summary>
18         K,
19         /// <summary>
20         /// 兰氏度
21         /// </summary>
22         R,
23         /// <summary>
24         /// 列氏度
25         /// </summary>
26         Re
27     }

添加一些属性

  1 /// <summary>
  2         /// The glass tube color
  3         /// </summary>
  4         private Color glassTubeColor = Color.FromArgb(211, 211, 211);
  5 
  6         /// <summary>
  7         /// Gets or sets the color of the glass tube.
  8         /// </summary>
  9         /// <value>The color of the glass tube.</value>
 10         [Description("玻璃管颜色"), Category("自定义")]
 11         public Color GlassTubeColor
 12         {
 13             get { return glassTubeColor; }
 14             set
 15             {
 16                 glassTubeColor = value;
 17                 Refresh();
 18             }
 19         }
 20 
 21         /// <summary>
 22         /// The mercury color
 23         /// </summary>
 24         private Color mercuryColor = Color.FromArgb(255, 77, 59);
 25 
 26         /// <summary>
 27         /// Gets or sets the color of the mercury.
 28         /// </summary>
 29         /// <value>The color of the mercury.</value>
 30         [Description("水印颜色"), Category("自定义")]
 31         public Color MercuryColor
 32         {
 33             get { return mercuryColor; }
 34             set
 35             {
 36                 mercuryColor = value;
 37                 Refresh();
 38             }
 39         }
 40 
 41         /// <summary>
 42         /// The minimum value
 43         /// </summary>
 44         private decimal minValue = 0;
 45         /// <summary>
 46         /// 左侧刻度最小值
 47         /// </summary>
 48         /// <value>The minimum value.</value>
 49         [Description("左侧刻度最小值"), Category("自定义")]
 50         public decimal MinValue
 51         {
 52             get { return minValue; }
 53             set
 54             {
 55                 minValue = value;
 56                 Refresh();
 57             }
 58         }
 59 
 60         /// <summary>
 61         /// The maximum value
 62         /// </summary>
 63         private decimal maxValue = 100;
 64         /// <summary>
 65         /// 左侧刻度最大值
 66         /// </summary>
 67         /// <value>The maximum value.</value>
 68         [Description("左侧刻度最大值"), Category("自定义")]
 69         public decimal MaxValue
 70         {
 71             get { return maxValue; }
 72             set
 73             {
 74                 maxValue = value;
 75                 Refresh();
 76             }
 77         }
 78 
 79         /// <summary>
 80         /// The m value
 81         /// </summary>
 82         private decimal m_value = 10;
 83         /// <summary>
 84         /// 左侧刻度值
 85         /// </summary>
 86         /// <value>The value.</value>
 87         [Description("左侧刻度值"), Category("自定义")]
 88         public decimal Value
 89         {
 90             get { return m_value; }
 91             set
 92             {
 93                 m_value = value;
 94                 Refresh();
 95             }
 96         }
 97 
 98         /// <summary>
 99         /// The split count
100         /// </summary>
101         private int splitCount = 0;
102         /// <summary>
103         /// 刻度分隔份数
104         /// </summary>
105         /// <value>The split count.</value>
106         [Description("刻度分隔份数"), Category("自定义")]
107         public int SplitCount
108         {
109             get { return splitCount; }
110             set
111             {
112                 if (value <= 0)
113                     return;
114                 splitCount = value;
115                 Refresh();
116             }
117         }
118 
119         /// <summary>
120         /// 获取或设置控件显示的文字的字体。
121         /// </summary>
122         /// <value>The font.</value>
123         /// <PermissionSet>
124         ///   <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
125         ///   <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
126         ///   <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
127         ///   <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
128         /// </PermissionSet>
129         [Description("获取或设置控件显示的文字的字体"), Category("自定义")]
130         public override Font Font
131         {
132             get
133             {
134                 return base.Font;
135             }
136             set
137             {
138                 base.Font = value;
139                 Refresh();
140             }
141         }
142 
143         /// <summary>
144         /// 获取或设置控件的前景色。
145         /// </summary>
146         /// <value>The color of the fore.</value>
147         /// <PermissionSet>
148         ///   <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
149         /// </PermissionSet>
150         [Description("获取或设置控件的文字及刻度颜色"), Category("自定义")]
151         public override System.Drawing.Color ForeColor
152         {
153             get
154             {
155                 return base.ForeColor;
156             }
157             set
158             {
159                 base.ForeColor = value;
160                 Refresh();
161             }
162         }
163 
164         /// <summary>
165         /// The left temperature unit
166         /// </summary>
167         private TemperatureUnit leftTemperatureUnit = TemperatureUnit.C;
168         /// <summary>
169         /// 左侧刻度单位，不可为none
170         /// </summary>
171         /// <value>The left temperature unit.</value>
172         [Description("左侧刻度单位，不可为none"), Category("自定义")]
173         public TemperatureUnit LeftTemperatureUnit
174         {
175             get { return leftTemperatureUnit; }
176             set
177             {
178                 if (value == TemperatureUnit.None)
179                     return;
180                 leftTemperatureUnit = value;
181                 Refresh();
182             }
183         }
184 
185         /// <summary>
186         /// The right temperature unit
187         /// </summary>
188         private TemperatureUnit rightTemperatureUnit = TemperatureUnit.C;
189         /// <summary>
190         /// 右侧刻度单位，当为none时，不显示
191         /// </summary>
192         /// <value>The right temperature unit.</value>
193         [Description("右侧刻度单位，当为none时，不显示"), Category("自定义")]
194         public TemperatureUnit RightTemperatureUnit
195         {
196             get { return rightTemperatureUnit; }
197             set
198             {
199                 rightTemperatureUnit = value;
200                 Refresh();
201             }
202         }
203 
204         /// <summary>
205         /// The m rect working
206         /// </summary>
207         Rectangle m_rectWorking;
208         /// <summary>
209         /// The m rect left
210         /// </summary>
211         Rectangle m_rectLeft;
212         /// <summary>
213         /// The m rect right
214         /// </summary>
215         Rectangle m_rectRight;

改变大小时，设定画图区域

1  void UCThermometer_SizeChanged(object sender, EventArgs e)
2         {
3             m_rectWorking = new Rectangle(this.Width / 2 - this.Width / 8, this.Width / 4, this.Width / 4, this.Height - this.Width / 2);
4             m_rectLeft = new Rectangle(0, m_rectWorking.Top + m_rectWorking.Width / 2, (this.Width - this.Width / 4) / 2 - 2, m_rectWorking.Height - m_rectWorking.Width * 2);
5             m_rectRight = new Rectangle(this.Width - (this.Width - this.Width / 4) / 2 + 2, m_rectWorking.Top + m_rectWorking.Width / 2, (this.Width - this.Width / 4) / 2 - 2, m_rectWorking.Height - m_rectWorking.Width * 2);
6         }

重绘

 1  protected override void OnPaint(PaintEventArgs e)
 2         {
 3             base.OnPaint(e);
 4             var g = e.Graphics;
 5             g.SetGDIHigh();
 6 
 7             //玻璃管管
 8             GraphicsPath path = new GraphicsPath();
 9             path.AddLine(m_rectWorking.Left, m_rectWorking.Bottom, m_rectWorking.Left, m_rectWorking.Top + m_rectWorking.Width / 2);
10             path.AddArc(new Rectangle(m_rectWorking.Left, m_rectWorking.Top, m_rectWorking.Width, m_rectWorking.Width), 180, 180);
11             path.AddLine(m_rectWorking.Right, m_rectWorking.Top + m_rectWorking.Width / 2, m_rectWorking.Right, m_rectWorking.Bottom);
12             path.CloseAllFigures();
13             g.FillPath(new SolidBrush(glassTubeColor), path);
14 
15             //底部
16             var rectDi = new Rectangle(this.Width / 2 - m_rectWorking.Width, m_rectWorking.Bottom - m_rectWorking.Width - 2, m_rectWorking.Width * 2, m_rectWorking.Width * 2);
17             g.FillEllipse(new SolidBrush(glassTubeColor), rectDi);
18             g.FillEllipse(new SolidBrush(mercuryColor), new Rectangle(rectDi.Left + 4, rectDi.Top + 4, rectDi.Width - 8, rectDi.Height - 8));
19 
20             //刻度
21             decimal decSplit = (maxValue - minValue) / splitCount;
22             decimal decSplitHeight = m_rectLeft.Height / splitCount;
23             for (int i = 0; i <= splitCount; i++)
24             {
25                 g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Left + 2, (float)(m_rectLeft.Bottom - decSplitHeight * i)), new PointF(m_rectLeft.Right, (float)(m_rectLeft.Bottom - decSplitHeight * i)));
26 
27                 var valueLeft = (minValue + decSplit * i).ToString("0.##");
28                 var sizeLeft = g.MeasureString(valueLeft, Font);
29                 g.DrawString(valueLeft, Font, new SolidBrush(ForeColor), new PointF(m_rectLeft.Left, m_rectLeft.Bottom - (float)decSplitHeight * i - sizeLeft.Height - 1));
30 
31                 if (rightTemperatureUnit != TemperatureUnit.None)
32                 {
33                     g.DrawLine(new Pen(new SolidBrush(Color.Black), 1), new PointF(m_rectRight.Left + 2, (float)(m_rectRight.Bottom - decSplitHeight * i)), new PointF(m_rectRight.Right, (float)(m_rectRight.Bottom - decSplitHeight * i)));
34                     var valueRight = GetRightValue(minValue + decSplit * i).ToString("0.##");
35                     var sizeRight = g.MeasureString(valueRight, Font);
36                     g.DrawString(valueRight, Font, new SolidBrush(ForeColor), new PointF(m_rectRight.Right - sizeRight.Width - 1, m_rectRight.Bottom - (float)decSplitHeight * i - sizeRight.Height - 1));
37                 }
38                 if (i != splitCount)
39                 {
40                     if (decSplitHeight > 40)
41                     {
42                         var decSp1 = decSplitHeight / 10;
43                         for (int j = 1; j < 10; j++)
44                         {
45                             if (j == 5)
46                             {
47                                 g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Right - 10, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectLeft.Right, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
48                                 if (rightTemperatureUnit != TemperatureUnit.None)
49                                 {
50                                     g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectRight.Left + 10, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectRight.Left, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
51                                 }
52                             }
53                             else
54                             {
55                                 g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Right - 5, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectLeft.Right, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
56                                 if (rightTemperatureUnit != TemperatureUnit.None)
57                                 {
58                                     g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectRight.Left + 5, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectRight.Left, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
59                                 }
60                             }
61                         }
62                     }
63                     else if (decSplitHeight > 10)
64                     {
65                         g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Right - 5, (m_rectLeft.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)), new PointF(m_rectLeft.Right, (m_rectLeft.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)));
66                         if (rightTemperatureUnit != TemperatureUnit.None)
67                         {
68                             g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectRight.Left + 5, (m_rectRight.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)), new PointF(m_rectRight.Left, (m_rectRight.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)));
69                         }
70                     }
71                 }
72             }
73             //单位
74             string strLeftUnit = GetUnitChar(leftTemperatureUnit);
75             g.DrawString(strLeftUnit, Font, new SolidBrush(ForeColor), new PointF(m_rectLeft.Left + 2, 2));
76             if (rightTemperatureUnit != TemperatureUnit.None)
77             {
78                 string strRightUnit = GetUnitChar(rightTemperatureUnit);
79                 var rightSize = g.MeasureString(strRightUnit, Font);
80                 g.DrawString(strRightUnit, Font, new SolidBrush(ForeColor), new PointF(m_rectRight.Right - 2 - rightSize.Width, 2));
81             }
82             //值
83             float fltHeightValue = (float)(Value / (maxValue - minValue) * m_rectLeft.Height);
84             RectangleF rectValue = new RectangleF(m_rectWorking.Left + 4, m_rectLeft.Top + (m_rectLeft.Height - fltHeightValue), m_rectWorking.Width - 8, fltHeightValue + (m_rectWorking.Height - m_rectWorking.Width / 2 - m_rectLeft.Height));
85             g.FillRectangle(new SolidBrush(mercuryColor), rectValue);
86 
87 
88             var sizeValue = g.MeasureString(m_value.ToString("0.##"), Font);
89             g.DrawString(m_value.ToString("0.##"), Font, new SolidBrush(Color.White), new PointF(rectDi.Left + (rectDi.Width - sizeValue.Width) / 2, rectDi.Top + (rectDi.Height - sizeValue.Height) / 2 + 1));
90         }

辅助函数

 1 private string GetUnitChar(TemperatureUnit unit)
 2         {
 3             string strUnit = "℃";
 4             switch (unit)
 5             {
 6                 case TemperatureUnit.C:
 7                     strUnit = "℃";
 8                     break;
 9                 case TemperatureUnit.F:
10                     strUnit = "℉";
11                     break;
12                 case TemperatureUnit.K:
13                     strUnit = "K";
14                     break;
15                 case TemperatureUnit.R:
16                     strUnit = "°R";
17                     break;
18                 case TemperatureUnit.Re:
19                     strUnit = "°Re";
20                     break;
21             }
22             return strUnit;
23         }
24 
25         private decimal GetRightValue(decimal decValue)
26         {
27             //先将左侧的换算为摄氏度
28             var dec = decValue;
29             switch (leftTemperatureUnit)
30             {
31                 case TemperatureUnit.F:
32                     dec = (decValue - 32) / (9M / 5M);
33                     break;
34                 case TemperatureUnit.K:
35                     dec = decValue - 273;
36                     break;
37                 case TemperatureUnit.R:
38                     dec = decValue / (5M / 9M) - 273.15M;
39                     break;
40                 case TemperatureUnit.Re:
41                     dec = decValue / 1.25M;
42                     break;
43                 default:
44                     break;
45             }
46 
47             switch (rightTemperatureUnit)
48             {
49                 case TemperatureUnit.C:
50                     return dec;
51                 case TemperatureUnit.F:
52                     return 9M / 5M * dec + 32;
53                 case TemperatureUnit.K:
54                     return dec + 273;
55                 case TemperatureUnit.R:
56                     return (dec + 273.15M) * (5M / 9M);
57                 case TemperatureUnit.Re:
58                     return dec * 1.25M;
59             }
60             return decValue;
61         }

完整代码

  1 // ***********************************************************************
  2 // Assembly         : HZH_Controls
  3 // Created          : 2019-09-10
  4 //
  5 // ***********************************************************************
  6 // <copyright file="UCThermometer.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
 26 {
 27     /// <summary>
 28     /// Class UCThermometer.
 29     /// Implements the <see cref="System.Windows.Forms.UserControl" />
 30     /// </summary>
 31     /// <seealso cref="System.Windows.Forms.UserControl" />
 32     public class UCThermometer : UserControl
 33     {
 34         /// <summary>
 35         /// The glass tube color
 36         /// </summary>
 37         private Color glassTubeColor = Color.FromArgb(211, 211, 211);
 38 
 39         /// <summary>
 40         /// Gets or sets the color of the glass tube.
 41         /// </summary>
 42         /// <value>The color of the glass tube.</value>
 43         [Description("玻璃管颜色"), Category("自定义")]
 44         public Color GlassTubeColor
 45         {
 46             get { return glassTubeColor; }
 47             set
 48             {
 49                 glassTubeColor = value;
 50                 Refresh();
 51             }
 52         }
 53 
 54         /// <summary>
 55         /// The mercury color
 56         /// </summary>
 57         private Color mercuryColor = Color.FromArgb(255, 77, 59);
 58 
 59         /// <summary>
 60         /// Gets or sets the color of the mercury.
 61         /// </summary>
 62         /// <value>The color of the mercury.</value>
 63         [Description("水印颜色"), Category("自定义")]
 64         public Color MercuryColor
 65         {
 66             get { return mercuryColor; }
 67             set
 68             {
 69                 mercuryColor = value;
 70                 Refresh();
 71             }
 72         }
 73 
 74         /// <summary>
 75         /// The minimum value
 76         /// </summary>
 77         private decimal minValue = 0;
 78         /// <summary>
 79         /// 左侧刻度最小值
 80         /// </summary>
 81         /// <value>The minimum value.</value>
 82         [Description("左侧刻度最小值"), Category("自定义")]
 83         public decimal MinValue
 84         {
 85             get { return minValue; }
 86             set
 87             {
 88                 minValue = value;
 89                 Refresh();
 90             }
 91         }
 92 
 93         /// <summary>
 94         /// The maximum value
 95         /// </summary>
 96         private decimal maxValue = 100;
 97         /// <summary>
 98         /// 左侧刻度最大值
 99         /// </summary>
100         /// <value>The maximum value.</value>
101         [Description("左侧刻度最大值"), Category("自定义")]
102         public decimal MaxValue
103         {
104             get { return maxValue; }
105             set
106             {
107                 maxValue = value;
108                 Refresh();
109             }
110         }
111 
112         /// <summary>
113         /// The m value
114         /// </summary>
115         private decimal m_value = 10;
116         /// <summary>
117         /// 左侧刻度值
118         /// </summary>
119         /// <value>The value.</value>
120         [Description("左侧刻度值"), Category("自定义")]
121         public decimal Value
122         {
123             get { return m_value; }
124             set
125             {
126                 m_value = value;
127                 Refresh();
128             }
129         }
130 
131         /// <summary>
132         /// The split count
133         /// </summary>
134         private int splitCount = 0;
135         /// <summary>
136         /// 刻度分隔份数
137         /// </summary>
138         /// <value>The split count.</value>
139         [Description("刻度分隔份数"), Category("自定义")]
140         public int SplitCount
141         {
142             get { return splitCount; }
143             set
144             {
145                 if (value <= 0)
146                     return;
147                 splitCount = value;
148                 Refresh();
149             }
150         }
151 
152         /// <summary>
153         /// 获取或设置控件显示的文字的字体。
154         /// </summary>
155         /// <value>The font.</value>
156         /// <PermissionSet>
157         ///   <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
158         ///   <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
159         ///   <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode, ControlEvidence" />
160         ///   <IPermission class="System.Diagnostics.PerformanceCounterPermission, System, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
161         /// </PermissionSet>
162         [Description("获取或设置控件显示的文字的字体"), Category("自定义")]
163         public override Font Font
164         {
165             get
166             {
167                 return base.Font;
168             }
169             set
170             {
171                 base.Font = value;
172                 Refresh();
173             }
174         }
175 
176         /// <summary>
177         /// 获取或设置控件的前景色。
178         /// </summary>
179         /// <value>The color of the fore.</value>
180         /// <PermissionSet>
181         ///   <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
182         /// </PermissionSet>
183         [Description("获取或设置控件的文字及刻度颜色"), Category("自定义")]
184         public override System.Drawing.Color ForeColor
185         {
186             get
187             {
188                 return base.ForeColor;
189             }
190             set
191             {
192                 base.ForeColor = value;
193                 Refresh();
194             }
195         }
196 
197         /// <summary>
198         /// The left temperature unit
199         /// </summary>
200         private TemperatureUnit leftTemperatureUnit = TemperatureUnit.C;
201         /// <summary>
202         /// 左侧刻度单位，不可为none
203         /// </summary>
204         /// <value>The left temperature unit.</value>
205         [Description("左侧刻度单位，不可为none"), Category("自定义")]
206         public TemperatureUnit LeftTemperatureUnit
207         {
208             get { return leftTemperatureUnit; }
209             set
210             {
211                 if (value == TemperatureUnit.None)
212                     return;
213                 leftTemperatureUnit = value;
214                 Refresh();
215             }
216         }
217 
218         /// <summary>
219         /// The right temperature unit
220         /// </summary>
221         private TemperatureUnit rightTemperatureUnit = TemperatureUnit.C;
222         /// <summary>
223         /// 右侧刻度单位，当为none时，不显示
224         /// </summary>
225         /// <value>The right temperature unit.</value>
226         [Description("右侧刻度单位，当为none时，不显示"), Category("自定义")]
227         public TemperatureUnit RightTemperatureUnit
228         {
229             get { return rightTemperatureUnit; }
230             set
231             {
232                 rightTemperatureUnit = value;
233                 Refresh();
234             }
235         }
236 
237         /// <summary>
238         /// The m rect working
239         /// </summary>
240         Rectangle m_rectWorking;
241         /// <summary>
242         /// The m rect left
243         /// </summary>
244         Rectangle m_rectLeft;
245         /// <summary>
246         /// The m rect right
247         /// </summary>
248         Rectangle m_rectRight;
249         /// <summary>
250         /// Initializes a new instance of the <see cref="UCThermometer"/> class.
251         /// </summary>
252         public UCThermometer()
253         {
254             this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
255             this.SetStyle(ControlStyles.DoubleBuffer, true);
256             this.SetStyle(ControlStyles.ResizeRedraw, true);
257             this.SetStyle(ControlStyles.Selectable, true);
258             this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
259             this.SetStyle(ControlStyles.UserPaint, true);
260             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
261             this.SizeChanged += UCThermometer_SizeChanged;
262             this.Size = new Size(70, 200);
263         }
264 
265         /// <summary>
266         /// Handles the SizeChanged event of the UCThermometer control.
267         /// </summary>
268         /// <param name="sender">The source of the event.</param>
269         /// <param name="e">The <see cref="EventArgs"/> instance containing the event data.</param>
270         void UCThermometer_SizeChanged(object sender, EventArgs e)
271         {
272             m_rectWorking = new Rectangle(this.Width / 2 - this.Width / 8, this.Width / 4, this.Width / 4, this.Height - this.Width / 2);
273             m_rectLeft = new Rectangle(0, m_rectWorking.Top + m_rectWorking.Width / 2, (this.Width - this.Width / 4) / 2 - 2, m_rectWorking.Height - m_rectWorking.Width * 2);
274             m_rectRight = new Rectangle(this.Width - (this.Width - this.Width / 4) / 2 + 2, m_rectWorking.Top + m_rectWorking.Width / 2, (this.Width - this.Width / 4) / 2 - 2, m_rectWorking.Height - m_rectWorking.Width * 2);
275         }
276 
277         /// <summary>
278         /// 引发 <see cref="E:System.Windows.Forms.Control.Paint" /> 事件。
279         /// </summary>
280         /// <param name="e">包含事件数据的 <see cref="T:System.Windows.Forms.PaintEventArgs" />。</param>
281         protected override void OnPaint(PaintEventArgs e)
282         {
283             base.OnPaint(e);
284             var g = e.Graphics;
285             g.SetGDIHigh();
286 
287             //玻璃管管
288             GraphicsPath path = new GraphicsPath();
289             path.AddLine(m_rectWorking.Left, m_rectWorking.Bottom, m_rectWorking.Left, m_rectWorking.Top + m_rectWorking.Width / 2);
290             path.AddArc(new Rectangle(m_rectWorking.Left, m_rectWorking.Top, m_rectWorking.Width, m_rectWorking.Width), 180, 180);
291             path.AddLine(m_rectWorking.Right, m_rectWorking.Top + m_rectWorking.Width / 2, m_rectWorking.Right, m_rectWorking.Bottom);
292             path.CloseAllFigures();
293             g.FillPath(new SolidBrush(glassTubeColor), path);
294 
295             //底部
296             var rectDi = new Rectangle(this.Width / 2 - m_rectWorking.Width, m_rectWorking.Bottom - m_rectWorking.Width - 2, m_rectWorking.Width * 2, m_rectWorking.Width * 2);
297             g.FillEllipse(new SolidBrush(glassTubeColor), rectDi);
298             g.FillEllipse(new SolidBrush(mercuryColor), new Rectangle(rectDi.Left + 4, rectDi.Top + 4, rectDi.Width - 8, rectDi.Height - 8));
299 
300             //刻度
301             decimal decSplit = (maxValue - minValue) / splitCount;
302             decimal decSplitHeight = m_rectLeft.Height / splitCount;
303             for (int i = 0; i <= splitCount; i++)
304             {
305                 g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Left + 2, (float)(m_rectLeft.Bottom - decSplitHeight * i)), new PointF(m_rectLeft.Right, (float)(m_rectLeft.Bottom - decSplitHeight * i)));
306 
307                 var valueLeft = (minValue + decSplit * i).ToString("0.##");
308                 var sizeLeft = g.MeasureString(valueLeft, Font);
309                 g.DrawString(valueLeft, Font, new SolidBrush(ForeColor), new PointF(m_rectLeft.Left, m_rectLeft.Bottom - (float)decSplitHeight * i - sizeLeft.Height - 1));
310 
311                 if (rightTemperatureUnit != TemperatureUnit.None)
312                 {
313                     g.DrawLine(new Pen(new SolidBrush(Color.Black), 1), new PointF(m_rectRight.Left + 2, (float)(m_rectRight.Bottom - decSplitHeight * i)), new PointF(m_rectRight.Right, (float)(m_rectRight.Bottom - decSplitHeight * i)));
314                     var valueRight = GetRightValue(minValue + decSplit * i).ToString("0.##");
315                     var sizeRight = g.MeasureString(valueRight, Font);
316                     g.DrawString(valueRight, Font, new SolidBrush(ForeColor), new PointF(m_rectRight.Right - sizeRight.Width - 1, m_rectRight.Bottom - (float)decSplitHeight * i - sizeRight.Height - 1));
317                 }
318                 if (i != splitCount)
319                 {
320                     if (decSplitHeight > 40)
321                     {
322                         var decSp1 = decSplitHeight / 10;
323                         for (int j = 1; j < 10; j++)
324                         {
325                             if (j == 5)
326                             {
327                                 g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Right - 10, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectLeft.Right, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
328                                 if (rightTemperatureUnit != TemperatureUnit.None)
329                                 {
330                                     g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectRight.Left + 10, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectRight.Left, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
331                                 }
332                             }
333                             else
334                             {
335                                 g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Right - 5, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectLeft.Right, (m_rectLeft.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
336                                 if (rightTemperatureUnit != TemperatureUnit.None)
337                                 {
338                                     g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectRight.Left + 5, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))), new PointF(m_rectRight.Left, (m_rectRight.Bottom - (float)decSplitHeight * i - ((float)decSp1 * j))));
339                                 }
340                             }
341                         }
342                     }
343                     else if (decSplitHeight > 10)
344                     {
345                         g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectLeft.Right - 5, (m_rectLeft.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)), new PointF(m_rectLeft.Right, (m_rectLeft.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)));
346                         if (rightTemperatureUnit != TemperatureUnit.None)
347                         {
348                             g.DrawLine(new Pen(new SolidBrush(ForeColor), 1), new PointF(m_rectRight.Left + 5, (m_rectRight.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)), new PointF(m_rectRight.Left, (m_rectRight.Bottom - (float)decSplitHeight * i - (float)decSplitHeight / 2)));
349                         }
350                     }
351                 }
352             }
353             //单位
354             string strLeftUnit = GetUnitChar(leftTemperatureUnit);
355             g.DrawString(strLeftUnit, Font, new SolidBrush(ForeColor), new PointF(m_rectLeft.Left + 2, 2));
356             if (rightTemperatureUnit != TemperatureUnit.None)
357             {
358                 string strRightUnit = GetUnitChar(rightTemperatureUnit);
359                 var rightSize = g.MeasureString(strRightUnit, Font);
360                 g.DrawString(strRightUnit, Font, new SolidBrush(ForeColor), new PointF(m_rectRight.Right - 2 - rightSize.Width, 2));
361             }
362             //值
363             float fltHeightValue = (float)(Value / (maxValue - minValue) * m_rectLeft.Height);
364             RectangleF rectValue = new RectangleF(m_rectWorking.Left + 4, m_rectLeft.Top + (m_rectLeft.Height - fltHeightValue), m_rectWorking.Width - 8, fltHeightValue + (m_rectWorking.Height - m_rectWorking.Width / 2 - m_rectLeft.Height));
365             g.FillRectangle(new SolidBrush(mercuryColor), rectValue);
366 
367 
368             var sizeValue = g.MeasureString(m_value.ToString("0.##"), Font);
369             g.DrawString(m_value.ToString("0.##"), Font, new SolidBrush(Color.White), new PointF(rectDi.Left + (rectDi.Width - sizeValue.Width) / 2, rectDi.Top + (rectDi.Height - sizeValue.Height) / 2 + 1));
370         }
371 
372         private string GetUnitChar(TemperatureUnit unit)
373         {
374             string strUnit = "℃";
375             switch (unit)
376             {
377                 case TemperatureUnit.C:
378                     strUnit = "℃";
379                     break;
380                 case TemperatureUnit.F:
381                     strUnit = "℉";
382                     break;
383                 case TemperatureUnit.K:
384                     strUnit = "K";
385                     break;
386                 case TemperatureUnit.R:
387                     strUnit = "°R";
388                     break;
389                 case TemperatureUnit.Re:
390                     strUnit = "°Re";
391                     break;
392             }
393             return strUnit;
394         }
395 
396         private decimal GetRightValue(decimal decValue)
397         {
398             //先将左侧的换算为摄氏度
399             var dec = decValue;
400             switch (leftTemperatureUnit)
401             {
402                 case TemperatureUnit.F:
403                     dec = (decValue - 32) / (9M / 5M);
404                     break;
405                 case TemperatureUnit.K:
406                     dec = decValue - 273;
407                     break;
408                 case TemperatureUnit.R:
409                     dec = decValue / (5M / 9M) - 273.15M;
410                     break;
411                 case TemperatureUnit.Re:
412                     dec = decValue / 1.25M;
413                     break;
414                 default:
415                     break;
416             }
417 
418             switch (rightTemperatureUnit)
419             {
420                 case TemperatureUnit.C:
421                     return dec;
422                 case TemperatureUnit.F:
423                     return 9M / 5M * dec + 32;
424                 case TemperatureUnit.K:
425                     return dec + 273;
426                 case TemperatureUnit.R:
427                     return (dec + 273.15M) * (5M / 9M);
428                 case TemperatureUnit.Re:
429                     return dec * 1.25M;
430             }
431             return decValue;
432         }
433     }
434 
435     /// <summary>
436     /// Enum TemperatureUnit
437     /// </summary>
438     public enum TemperatureUnit
439     {
440         /// <summary>
441         /// 不显示
442         /// </summary>
443         None,
444         /// <summary>
445         /// 摄氏度
446         /// </summary>
447         C,
448         /// <summary>
449         /// 华氏度
450         /// </summary>
451         F,
452         /// <summary>
453         /// 开氏度
454         /// </summary>
455         K,
456         /// <summary>
457         /// 兰氏度
458         /// </summary>
459         R,
460         /// <summary>
461         /// 列氏度
462         /// </summary>
463         Re
464     }
465 }
View Code

 

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posted @ 2019-09-10 16:31  冰封一夏  阅读(3956)  评论(8)  编辑  收藏  举报
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