（四十二）c#Winform自定义控件-进度条扩展
作者：互联网
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 
NuGet
Install-Package HZH_Controls
目录
https://www.cnblogs.com/bfyx/p/11364884.html
用处及效果
准备工作
这个是基于（四十一）c#Winform自定义控件-进度条 扩展的，如果你还没有了解，请先移步了解一下
开始
添加一个用户控件，命名UCProcessLineExt
属性
1 [Description("值变更事件"), Category("自定义")]
2 public event EventHandler ValueChanged;
3
4 [Description("当前属性"), Category("自定义")]
5 public int Value
6 {
7 set
8 {
9 ucProcessLine1.Value = value;
10 Refresh();
11 }
12 get
13 {
14 return ucProcessLine1.Value;
15 }
16 }
17
18
19
20 [Description("最大值"), Category("自定义")]
21 public int MaxValue
22 {
23 get { return ucProcessLine1.MaxValue; }
24 set
25 {
26 ucProcessLine1.MaxValue = value;
27 Refresh();
28 }
29 }
30
31
32 [Description("值进度条颜色"), Category("自定义")]
33 public Color ValueColor
34 {
35 get { return ucProcessLine1.ValueColor; }
36 set
37 {
38 ucProcessLine1.ValueColor = value;
39 Refresh();
40 }
41 }
42
43
44 [Description("值背景色"), Category("自定义")]
45 public Color ValueBGColor
46 {
47 get { return ucProcessLine1.ValueBGColor; }
48 set
49 {
50 ucProcessLine1.ValueBGColor = value;
51 Refresh();
52 }
53 }
54
55
56 [Description("边框颜色"), Category("自定义")]
57 public Color BorderColor
58 {
59 get { return ucProcessLine1.BorderColor; }
60 set
61 {
62 ucProcessLine1.BorderColor = value;
63 Refresh();
64 }
65 }
66
67 [Description("值字体"), Category("自定义")]
68 public override Font Font
69 {
70 get
71 {
72 return ucProcessLine1.Font;
73 }
74 set
75 {
76 ucProcessLine1.Font = value;
77 Refresh();
78 }
79 }
80
81 [Description("值块颜色"), Category("自定义")]
82 public override System.Drawing.Color ForeColor
83 {
84 get
85 {
86 return base.ForeColor;
87 }
88 set
89 {
90 base.ForeColor = value;
91 Refresh();
92 }
93 }
重绘
1 protected override void OnPaint(PaintEventArgs e)
2 {
3 base.OnPaint(e);
4 e.Graphics.SetGDIHigh();
5 float fltIndex = (float)this.ucProcessLine1.Value / (float)this.ucProcessLine1.MaxValue;
6
7 int x = (int)(fltIndex * this.ucProcessLine1.Width + this.ucProcessLine1.Location.X - 15) - 2;
8 GraphicsPath path = new GraphicsPath();
9 Rectangle rect = new Rectangle(x, 1, 30, 20);
10 int cornerRadius = 2;
11 path.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90);
12 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y);
13 path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90);
14 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2);
15 path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y + rect.Height - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 0, 90);
16 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.Right - cornerRadius * 2 - 5, rect.Bottom);//下
17 path.AddLine(rect.Right - cornerRadius * 2 - 5, 21, x + 15, ucProcessLine1.Location.Y);
18 path.AddLine(x + 15, ucProcessLine1.Location.Y, rect.X + cornerRadius * 2 + 5, 21);
19 path.AddLine(rect.X + cornerRadius * 2 + 5, 20, rect.X + cornerRadius * 2, rect.Bottom);//下
20 path.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90);
21 path.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2);//上
22 path.CloseFigure();
23
24 e.Graphics.FillPath(new SolidBrush(ForeColor), path);
25
26 string strValue = ((float)Value / (float)MaxValue).ToString("0%");
27 System.Drawing.SizeF sizeF = e.Graphics.MeasureString(strValue, Font);
28 e.Graphics.DrawString(strValue, Font, new SolidBrush(Color.White), new PointF(x + (30 - sizeF.Width) / 2+1, (20 - sizeF.Height) / 2 + 1));
29 }
全部代码
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.Drawing;
5 using System.Data;
6 using System.Linq;
7 using System.Text;
8 using System.Windows.Forms;
9 using System.Drawing.Drawing2D;
10
11 namespace HZH_Controls.Controls
12 {
13 public partial class UCProcessLineExt : UserControl
14 {
15 [Description("值变更事件"), Category("自定义")]
16 public event EventHandler ValueChanged;
17
18 [Description("当前属性"), Category("自定义")]
19 public int Value
20 {
21 set
22 {
23 ucProcessLine1.Value = value;
24 Refresh();
25 }
26 get
27 {
28 return ucProcessLine1.Value;
29 }
30 }
31
32
33
34 [Description("最大值"), Category("自定义")]
35 public int MaxValue
36 {
37 get { return ucProcessLine1.MaxValue; }
38 set
39 {
40 ucProcessLine1.MaxValue = value;
41 Refresh();
42 }
43 }
44
45
46 [Description("值进度条颜色"), Category("自定义")]
47 public Color ValueColor
48 {
49 get { return ucProcessLine1.ValueColor; }
50 set
51 {
52 ucProcessLine1.ValueColor = value;
53 Refresh();
54 }
55 }
56
57
58 [Description("值背景色"), Category("自定义")]
59 public Color ValueBGColor
60 {
61 get { return ucProcessLine1.ValueBGColor; }
62 set
63 {
64 ucProcessLine1.ValueBGColor = value;
65 Refresh();
66 }
67 }
68
69
70 [Description("边框颜色"), Category("自定义")]
71 public Color BorderColor
72 {
73 get { return ucProcessLine1.BorderColor; }
74 set
75 {
76 ucProcessLine1.BorderColor = value;
77 Refresh();
78 }
79 }
80
81 [Description("值字体"), Category("自定义")]
82 public override Font Font
83 {
84 get
85 {
86 return ucProcessLine1.Font;
87 }
88 set
89 {
90 ucProcessLine1.Font = value;
91 Refresh();
92 }
93 }
94
95 [Description("值块颜色"), Category("自定义")]
96 public override System.Drawing.Color ForeColor
97 {
98 get
99 {
100 return base.ForeColor;
101 }
102 set
103 {
104 base.ForeColor = value;
105 Refresh();
106 }
107 }
108
109 public UCProcessLineExt()
110 {
111 InitializeComponent();
112 this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
113 this.SetStyle(ControlStyles.DoubleBuffer, true);
114 this.SetStyle(ControlStyles.ResizeRedraw, true);
115 this.SetStyle(ControlStyles.Selectable, true);
116 this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
117 this.SetStyle(ControlStyles.UserPaint, true);
118 ucProcessLine1.ValueChanged += ucProcessLine1_ValueChanged;
119 }
120
121 void ucProcessLine1_ValueChanged(object sender, EventArgs e)
122 {
123 if (ValueChanged != null)
124 {
125 ValueChanged(this, e);
126 }
127 }
128
129 protected override void OnPaint(PaintEventArgs e)
130 {
131 base.OnPaint(e);
132 e.Graphics.SetGDIHigh();
133 float fltIndex = (float)this.ucProcessLine1.Value / (float)this.ucProcessLine1.MaxValue;
134
135 int x = (int)(fltIndex * this.ucProcessLine1.Width + this.ucProcessLine1.Location.X - 15) - 2;
136 GraphicsPath path = new GraphicsPath();
137 Rectangle rect = new Rectangle(x, 1, 30, 20);
138 int cornerRadius = 2;
139 path.AddArc(rect.X, rect.Y, cornerRadius * 2, cornerRadius * 2, 180, 90);
140 path.AddLine(rect.X + cornerRadius, rect.Y, rect.Right - cornerRadius * 2, rect.Y);
141 path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y, cornerRadius * 2, cornerRadius * 2, 270, 90);
142 path.AddLine(rect.Right, rect.Y + cornerRadius * 2, rect.Right, rect.Y + rect.Height - cornerRadius * 2);
143 path.AddArc(rect.X + rect.Width - cornerRadius * 2, rect.Y + rect.Height - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 0, 90);
144 path.AddLine(rect.Right - cornerRadius * 2, rect.Bottom, rect.Right - cornerRadius * 2 - 5, rect.Bottom);//下
145 path.AddLine(rect.Right - cornerRadius * 2 - 5, 21, x + 15, ucProcessLine1.Location.Y);
146 path.AddLine(x + 15, ucProcessLine1.Location.Y, rect.X + cornerRadius * 2 + 5, 21);
147 path.AddLine(rect.X + cornerRadius * 2 + 5, 20, rect.X + cornerRadius * 2, rect.Bottom);//下
148 path.AddArc(rect.X, rect.Bottom - cornerRadius * 2, cornerRadius * 2, cornerRadius * 2, 90, 90);
149 path.AddLine(rect.X, rect.Bottom - cornerRadius * 2, rect.X, rect.Y + cornerRadius * 2);//上
150 path.CloseFigure();
151
152 e.Graphics.FillPath(new SolidBrush(ForeColor), path);
153
154 string strValue = ((float)Value / (float)MaxValue).ToString("0%");
155 System.Drawing.SizeF sizeF = e.Graphics.MeasureString(strValue, Font);
156 e.Graphics.DrawString(strValue, Font, new SolidBrush(Color.White), new PointF(x + (30 - sizeF.Width) / 2+1, (20 - sizeF.Height) / 2 + 1));
157 }
158 }
159 }
View Code
1 namespace HZH_Controls.Controls
2 {
3 partial class UCProcessLineExt
4 {
5 /// <summary>
6 /// 必需的设计器变量。
7 /// </summary>
8 private System.ComponentModel.IContainer components = null;
9
10 /// <summary>
11 /// 清理所有正在使用的资源。
12 /// </summary>
13 /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
14 protected override void Dispose(bool disposing)
15 {
16 if (disposing && (components != null))
17 {
18 components.Dispose();
19 }
20 base.Dispose(disposing);
21 }
22
23 #region 组件设计器生成的代码
24
25 /// <summary>
26 /// 设计器支持所需的方法 - 不要
27 /// 使用代码编辑器修改此方法的内容。
28 /// </summary>
29 private void InitializeComponent()
30 {
31 this.ucProcessLine1 = new HZH_Controls.Controls.UCProcessLine();
32 this.SuspendLayout();
33 //
34 // ucProcessLine1
35 //
36 this.ucProcessLine1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
37 | System.Windows.Forms.AnchorStyles.Left)
38 | System.Windows.Forms.AnchorStyles.Right)));
39 this.ucProcessLine1.BorderColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(192)))), ((int)(((byte)(192)))));
40 this.ucProcessLine1.Font = new System.Drawing.Font("Arial Unicode MS", 10F);
41 this.ucProcessLine1.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(255)))), ((int)(((byte)(77)))), ((int)(((byte)(59)))));
42 this.ucProcessLine1.Location = new System.Drawing.Point(18, 33);
43 this.ucProcessLine1.MaxValue = 100;
44 this.ucProcessLine1.Name = "ucProcessLine1";
45 this.ucProcessLine1.Size = new System.Drawing.Size(399, 16);
46 this.ucProcessLine1.TabIndex = 0;
47 this.ucProcessLine1.Text = "ucProcessLine1";
48 this.ucProcessLine1.Value = 0;
49 this.ucProcessLine1.ValueBGColor = System.Drawing.Color.White;
50 this.ucProcessLine1.ValueColor = System.Drawing.Color.FromArgb(((int)(((byte)(73)))), ((int)(((byte)(119)))), ((int)(((byte)(232)))));
51 this.ucProcessLine1.ValueTextType = HZH_Controls.Controls.ValueTextType.None;
52 //
53 // UCProcessLineExt
54 //
55 this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
56 this.BackColor = System.Drawing.Color.Transparent;
57 this.Controls.Add(this.ucProcessLine1);
58 this.Name = "UCProcessLineExt";
59 this.Size = new System.Drawing.Size(434, 50);
60 this.ResumeLayout(false);
61
62 }
63
64 #endregion
65
66 private UCProcessLine ucProcessLine1;
67 }
68 }
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
标签：控件,自定义,进度条,System,cornerRadius,path,ucProcessLine1,rect 来源： https://www.cnblogs.com/bfyx/p/11392351.html