标签：err set handle lin scale instance nes lan auto
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
目录
https://www.cnblogs.com/bfyx/p/11364884.html
用处及效果
准备工作
使用GDI+画的，用到了三角函数，如果不了解可以先行百度
开始
添加一个类UCConduit，继承UserControl
添加几个属性
1 ///
2 /// The conduit style
3 ///
4 private ConduitStyle conduitStyle = ConduitStyle.Horizontal_None_None;
5
6 ///
7 /// Gets or sets the conduit style.
8 ///
9 /// The conduit style.
10 [Description("样式"), Category("自定义")]
11 public ConduitStyle ConduitStyle
12 {
13 get { return conduitStyle; }
14 set
15 {
16 string strOld = conduitStyle.ToString().Substring(0, 1);
17 string strNew = value.ToString().Substring(0, 1);
18 conduitStyle = value;
19 if (strOld != strNew)
20 {
21 this.Size = new Size(this.Size.Height, this.Size.Width);
22 }
23 Refresh();
24 }
25 }
26
27 ///
28 /// The conduit color
29 ///
30 private Color conduitColor = Color.FromArgb(255, 77, 59);
31 [Description("颜色"), Category("自定义")]
32 ///
33 /// Gets or sets the color of the conduit.
34 ///
35 /// The color of the conduit.
36 public Color ConduitColor
37 {
38 get { return conduitColor; }
39 set
40 {
41 conduitColor = value;
42 Refresh();
43 }
44 }
45
46 ///
47 /// The liquid color
48 ///
49 private Color liquidColor = Color.FromArgb(3, 169, 243);
50
51 ///
52 /// Gets or sets the color of the liquid.
53 ///
54 /// The color of the liquid.
55 [Description("液体颜色"), Category("自定义")]
56 public Color LiquidColor
57 {
58 get { return liquidColor; }
59 set
60 {
61 liquidColor = value;
62 if (liquidDirection != Conduit.LiquidDirection.None)
63 Refresh();
64 }
65 }
66
67 ///
68 /// The liquid direction
69 ///
70 private LiquidDirection liquidDirection = LiquidDirection.Forward;
71
72 ///
73 /// Gets or sets the liquid direction.
74 ///
75 /// The liquid direction.
76 [Description("液体流动方向"), Category("自定义")]
77 public LiquidDirection LiquidDirection
78 {
79 get { return liquidDirection; }
80 set
81 {
82 liquidDirection = value;
83 Refresh();
84 }
85 }
86
87 ///
88 /// The liquid speed
89 ///
90 private int liquidSpeed = 100;
91
92 ///
93 /// 液体流速，越小，速度越快Gets or sets the liquid speed.
94 ///
95 /// The liquid speed.
96 [Description("液体流速，越小，速度越快"), Category("自定义")]
97 public int LiquidSpeed
98 {
99 get { return liquidSpeed; }
100 set
101 {
102 if (value 0)
103 return;
104 liquidSpeed = value;
105 m_timer.Interval = value;
106 }
107 }
108
109 ///
110 /// The int pen width
111 ///
112 int intPenWidth = 0;
113
114 ///
115 /// The int line left
116 ///
117 int intLineLeft = 0;
118 ///
119 /// The m timer
120 ///
121 Timer m_timer;
根据参数设置重绘
1 ///
2 /// 引发 事件。
3 ///
4 /// 包含事件数据的 。
5 protected override void OnPaint(PaintEventArgs e)
6 {
7 base.OnPaint(e);
8 Graphics g = e.Graphics;
9
10 List lstArcs = new List();
11
12 GraphicsPath path = new GraphicsPath();
13 GraphicsPath linePath = new GraphicsPath();
14 switch (conduitStyle)
15 {
16 #region H English:H
17 case ConduitStyle.Horizontal_None_None:
18 path.AddLines(new PointF[]
19 {
20 new PointF(0, 0),
21 new PointF(this.ClientRectangle.Right, 0),
22 new PointF(this.ClientRectangle.Right, this.Height),
23 new PointF(0, this.Height)
24 });
25 path.CloseAllFigures();
26 linePath.AddLine(0, this.Height / 2, this.Width, this.Height / 2);
27 break;
28 case ConduitStyle.Horizontal_Up_None:
29 path.AddLines(new PointF[]
30 {
31 new PointF(0, 0),
32 new PointF(this.ClientRectangle.Right, 0),
33 new PointF(this.ClientRectangle.Right, this.Height),
34 new PointF(0+intPenWidth, this.Height)
35 });
36 path.AddArc(new Rectangle(0, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), 90, 90);
37 path.CloseAllFigures();
38
39 linePath.AddArc(new Rectangle(intPenWidth / 2 + 1, -1 * intPenWidth / 2 - 1, intPenWidth, intPenWidth), 181, -91);
40 linePath.AddLine(intPenWidth, this.Height / 2, this.Width, this.Height / 2);
41
42 lstArcs.Add(new ArcEntity() { rect = new Rectangle(0, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), startAngle = 90, sweepAngle = 90 });
43 break;
44 case ConduitStyle.Horizontal_Down_None:
45 path.AddLines(new PointF[]
46 {
47 new PointF(intPenWidth, 0),
48 new PointF(this.ClientRectangle.Right, 0),
49 new PointF(this.ClientRectangle.Right, this.Height),
50 new PointF(0, this.Height)
51 });
52 path.AddArc(new Rectangle(0, -1, intPenWidth * 2, intPenWidth * 2), 180, 90);
53 path.CloseAllFigures();
54
55 linePath.AddArc(new Rectangle(intPenWidth / 2 + 1, this.Height / 2, intPenWidth, intPenWidth), 179, 91);
56 linePath.AddLine(intPenWidth + 1, this.Height / 2, this.Width, this.Height / 2);
57
58 lstArcs.Add(new ArcEntity() { rect = new Rectangle(0, -1, intPenWidth * 2, intPenWidth * 2), startAngle = 180, sweepAngle = 90 });
59 break;
60 case ConduitStyle.Horizontal_None_Up:
61 path.AddLines(new PointF[]
62 {
63 new PointF(this.ClientRectangle.Right-intPenWidth, this.Height),
64 new PointF(0, this.Height),
65 new PointF(0, 0),
66 new PointF(this.ClientRectangle.Right-intPenWidth, 0)
67 });
68 path.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), 0, 90);
69 path.CloseAllFigures();
70
71 linePath.AddLine(0, this.Height / 2, this.Width - intPenWidth, this.Height / 2);
72 linePath.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth - intPenWidth / 2 - 1, -1 * intPenWidth / 2 - 1, intPenWidth, intPenWidth), 91, -91);
73
74 lstArcs.Add(new ArcEntity() { rect = new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), startAngle = 0, sweepAngle = 90 });
75 break;
76 case ConduitStyle.Horizontal_None_Down:
77 path.AddLines(new PointF[]
78 {
79 new PointF(this.ClientRectangle.Right, this.Height),
80 new PointF(0, this.Height),
81 new PointF(0, 0),
82 new PointF(this.ClientRectangle.Right-intPenWidth, 0)
83 });
84 path.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, -1, intPenWidth * 2, intPenWidth * 2), 270, 90);
85 path.CloseAllFigures();
86
87 linePath.AddLine(0, this.Height / 2, this.Width - intPenWidth - 1, this.Height / 2);
88 linePath.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth - intPenWidth / 2 - 1, intPenWidth / 2, intPenWidth, intPenWidth), 269, 91);
89
90 lstArcs.Add(new ArcEntity() { rect = new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, -1, intPenWidth * 2, intPenWidth * 2), startAngle = 270, sweepAngle = 90 });
91 break;
92 case ConduitStyle.Horizontal_Down_Up:
93 path.AddLine(new Point(intPenWidth, 0), new Point(this.Width, 0));
94 path.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), 0, 90);
95 path.AddLine(new Point(this.Width - intPenWidth, this.Height), new Point(0, this.Height));
96 path.AddArc(new Rectangle(0, -1, intPenWidth * 2, intPenWidth * 2), 180, 90);
97 path.CloseAllFigures();
98
99 linePath.AddArc(new Rectangle(intPenWidth / 2 + 1, this.Height / 2, intPenWidth, intPenWidth), 179, 91);
100 //linePath.AddLine(intPenWidth, this.Height / 2, this.Width - intPenWidth, this.Height / 2);
101 linePath.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth - intPenWidth / 2 - 1, -1 * intPenWidth / 2 - 1, intPenWidth, intPenWidth), 91, -91);
102
103 lstArcs.Add(new ArcEntity() { rect = new Rectangle(0, -1, intPenWidth * 2, intPenWidth * 2), startAngle = 180, sweepAngle = 90 });
104 lstArcs.Add(new ArcEntity() { rect = new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), startAngle = 0, sweepAngle = 90 });
105 break;
106 case ConduitStyle.Horizontal_Up_Down:
107 path.AddLine(new Point(0, 0), new Point(this.Width - intPenWidth, 0));
108 path.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, -1, intPenWidth * 2, intPenWidth * 2), 270, 90);
109 path.AddLine(new Point(this.Width, this.Height), new Point(intPenWidth, this.Height));
110 path.AddArc(new Rectangle(0, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), 90, 90);
111 path.CloseAllFigures();
112
113 linePath.AddArc(new Rectangle(intPenWidth / 2 + 1, -1 * intPenWidth / 2 - 1, intPenWidth, intPenWidth), 181, -91);
114 linePath.AddLine(intPenWidth, this.Height / 2, this.Width - intPenWidth - 1, this.Height / 2);
115 linePath.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth - intPenWidth / 2 - 1, intPenWidth / 2, intPenWidth, intPenWidth), 269, 91);
116
117 lstArcs.Add(new ArcEntity() { rect = new Rectangle(0, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), startAngle = 90, sweepAngle = 90 });
118 lstArcs.Add(new ArcEntity() { rect = new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, -1, intPenWidth * 2, intPenWidth * 2), startAngle = 270, sweepAngle = 90 });
119 break;
120 case ConduitStyle.Horizontal_Up_Up:
121 path.AddLine(new Point(0, 0), new Point(this.Width, 0));
122 path.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), 0, 90);
123 path.AddLine(new Point(this.Width - intPenWidth, this.Height), new Point(intPenWidth, this.Height));
124 path.AddArc(new Rectangle(0, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), 90, 90);
125 path.CloseAllFigures();
126
127 linePath.AddArc(new Rectangle(intPenWidth / 2 + 1, -1 * intPenWidth / 2 - 1, intPenWidth, intPenWidth), 181, -91);
128 //linePath.AddLine(intPenWidth, this.Height / 2, this.Width - intPenWidth, this.Height / 2);
129 linePath.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth - intPenWidth / 2 - 1, -1 * intPenWidth / 2 - 1, intPenWidth, intPenWidth), 91, -91);
130
131 lstArcs.Add(new ArcEntity() { rect = new Rectangle(0, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), startAngle = 90, sweepAngle = 90 });
132 lstArcs.Add(new ArcEntity() { rect = new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, intPenWidth * -1, intPenWidth * 2, intPenWidth * 2), startAngle = 0, sweepAngle = 90 });
133 break;
134 case ConduitStyle.Horizontal_Down_Down:
135 path.AddLine(new Point(intPenWidth, 0), new Point(this.Width - intPenWidth, 0));
136 path.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, -1, intPenWidth * 2, intPenWidth * 2), 270, 90);
137 path.AddLine(new Point(this.Width, this.Height), new Point(0, this.Height));
138 path.AddArc(new Rectangle(0, -1, intPenWidth * 2, intPenWidth * 2), 180, 90);
139 path.CloseAllFigures();
140
141 linePath.AddArc(new Rectangle(intPenWidth / 2 + 1, this.Height / 2, intPenWidth, intPenWidth), 179, 91);
142 linePath.AddLine(intPenWidth + 1, this.Height / 2, this.Width - intPenWidth - 1, this.Height / 2);
143 linePath.AddArc(new Rectangle(this.ClientRectangle.Right - intPenWidth - intPenWidth / 2 - 1, intPenWidth / 2, intPenWidth, intPenWidth), 269, 91);
144
145 lstArcs.Add(new ArcEntity() { rect = new Rectangle(0, -1, intPenWidth * 2, intPenWidth * 2), startAngle = 180, sweepAngle = 90 });
146 lstArcs.Add(new ArcEntity() { rect = new Rectangle(this.ClientRectangle.Right - intPenWidth * 2, -1, intPenWidth * 2, intPenWidth * 2), startAngle = 270, sweepAngle = 90 });
147 break;
148 #endregion
149
150 #region V English:V
151 case ConduitStyle.Vertical_None_None:
152 path.AddLines(new PointF[]
153 {
154 new PointF(0, 0),
155 new PointF(this.ClientRectangle.Right, 0),
156 new PointF(this.ClientRectangle.Right, this.Height),
157 new PointF(0, this.Height)
158 });
159 path.CloseAllFigures();
160 linePath.AddLine(this.Width / 2, 0, this.Width / 2, this.Height);
161 break;
162 case ConduitStyle.Vertical_Left_None:
163 path.AddLines(new PointF[]
164 {
165 new PointF(this.ClientRectangle.Right, intPenWidth),
166 new PointF(this.ClientRectangle.Right, this.Height),
167 new PointF(0, this.Height),
168 new PointF(0, 0)
169 });
170 path.AddArc(new Rectangle(-1 * intPenWidth, 0, intPenWidth * 2, intPenWidth * 2), 270, 90);
171 path.CloseAllFigures();
172
173 linePath.AddArc(new Rectangle(-1 * intPenWidth / 2 - 1, intPenWidth / 2 + 1, intPenWidth, intPenWidth), 269, 91);
174 linePath.AddLine(intPenWidth / 2, intPenWidth, intPenWidth / 2, this.Height);
175
176 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1 * intPenWidth, 0, intPenWidth * 2, intPenWidth * 2), startAngle = 270, sweepAngle = 90 });
177 break;
178 case ConduitStyle.Vertical_Right_None:
179 path.AddLines(new PointF[]
180 {
181 new PointF(this.ClientRectangle.Right, 0),
182 new PointF(this.ClientRectangle.Right, this.Height),
183 new PointF(0, this.Height),
184 new PointF(0, intPenWidth)
185 });
186 path.AddArc(new Rectangle(-1, 0, intPenWidth * 2, intPenWidth * 2), 180, 90);
187 path.CloseAllFigures();
188
189 linePath.AddArc(new Rectangle(intPenWidth / 2, intPenWidth / 2 + 1, intPenWidth, intPenWidth), 271, -91);
190 linePath.AddLine(intPenWidth / 2, intPenWidth + 1, intPenWidth / 2, this.Height);
191
192 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1, 0, intPenWidth * 2, intPenWidth * 2), startAngle = 180, sweepAngle = 90 });
193 break;
194 case ConduitStyle.Vertical_None_Left:
195 path.AddLines(new PointF[]
196 {
197 new PointF(0, this.Height),
198 new PointF(0, 0),
199 new PointF(this.ClientRectangle.Right, 0),
200 new PointF(this.ClientRectangle.Right, this.Height-intPenWidth),
201 });
202 path.AddArc(new Rectangle(-1 * intPenWidth, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), 0, 90);
203 path.CloseAllFigures();
204
205 linePath.AddLine(this.Width / 2, 0, this.Width / 2, this.Height - intPenWidth);
206 linePath.AddArc(new Rectangle(-1 * intPenWidth / 2 - 1, this.Height - intPenWidth - intPenWidth / 2 - 1, intPenWidth, intPenWidth), -1, 91);
207
208 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1 * intPenWidth, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), startAngle = 0, sweepAngle = 90 });
209 break;
210 case ConduitStyle.Vertical_None_Right:
211 path.AddLines(new PointF[]
212 {
213 new PointF(0, this.Height-intPenWidth),
214 new PointF(0, 0),
215 new PointF(this.ClientRectangle.Right, 0),
216 new PointF(this.ClientRectangle.Right, this.Height),
217 });
218 path.AddArc(new Rectangle(-1, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), 90, 90);
219 path.CloseAllFigures();
220
221 linePath.AddLine(this.Width / 2, 0, this.Width / 2, this.Height - intPenWidth - 1);
222 linePath.AddArc(new Rectangle(intPenWidth / 2, this.Height - intPenWidth - intPenWidth / 2 - 1, intPenWidth, intPenWidth), 181, -91);
223
224 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), startAngle = 90, sweepAngle = 90 });
225 break;
226 case ConduitStyle.Vertical_Left_Right:
227 path.AddLine(this.Width, intPenWidth, this.Width, this.Height);
228 path.AddArc(new Rectangle(-1, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), 90, 90);
229 path.AddLine(0, this.Height - intPenWidth, 0, 0);
230 path.AddArc(new Rectangle(-1 * intPenWidth, 0, intPenWidth * 2, intPenWidth * 2), 270, 90);
231 path.CloseAllFigures();
232
233 linePath.AddArc(new Rectangle(-1 * intPenWidth / 2 - 1, intPenWidth / 2 + 1, intPenWidth, intPenWidth), 269, 91);
234 //linePath.AddLine(intPenWidth / 2, intPenWidth, intPenWidth / 2, this.Height - intPenWidth);
235 linePath.AddArc(new Rectangle(intPenWidth / 2, this.Height - intPenWidth - intPenWidth / 2 - 1, intPenWidth, intPenWidth), 181, -91);
236
237 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1 * intPenWidth, 0, intPenWidth * 2, intPenWidth * 2), startAngle = 270, sweepAngle = 90 });
238 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), startAngle = 90, sweepAngle = 90 });
239 break;
240 case ConduitStyle.Vertical_Right_Left:
241 path.AddLine(this.Width, 0, this.Width, this.Height - intPenWidth);
242 path.AddArc(new Rectangle(-1 * intPenWidth, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), 0, 90);
243 path.AddLine(0, this.Height, 0, intPenWidth);
244 path.AddArc(new Rectangle(-1, 0, intPenWidth * 2, intPenWidth * 2), 180, 90);
245 path.CloseAllFigures();
246
247 linePath.AddArc(new Rectangle(intPenWidth / 2, intPenWidth / 2 + 1, intPenWidth, intPenWidth), 271, -91);
248 //linePath.AddLine(intPenWidth / 2, intPenWidth, intPenWidth / 2, this.Height - intPenWidth);
249 linePath.AddArc(new Rectangle(-1 * intPenWidth / 2 - 1, this.Height - intPenWidth - intPenWidth / 2 - 1, intPenWidth, intPenWidth), -1, 91);
250
251 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1, 0, intPenWidth * 2, intPenWidth * 2), startAngle = 180, sweepAngle = 90 });
252 lstArcs.Add(new ArcEntity() { rect = new Rectangle(-1 * intPenWidth, this.Height - intPenWidth * 2, intPenWidth * 2, intPenWidth * 2), startAngle =