（四十六）c#Winform自定义控件-水波进度条
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2022-07-01 16:26:22
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_contr ......
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：
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nuget
install-package hzh_controls
目录
用处及效果
准备工作
这个用到gdi+画的，请先了解一下gdi+
还有用到了基类控件uccontrolbase来控制圆角和背景色，如果还不了解请移步查看
另外用到了水波控件ucwave，如果不了解请移步查看
开始
添加一个用户控件ucprocesswave，继承uccontrolbase
一些属性
1 private bool m_isrectangle = false;
2 [description("是否矩形"), category("自定义")]
3 public bool isrectangle
4 {
5 get { return m_isrectangle; }
6 set
7 {
8 m_isrectangle = value;
9 if (value)
10 {
11 base.conerradius = 10;
12 }
13 else
14 {
15 base.conerradius = math.min(this.width, this.height);
16 }
17 }
18 }
19 #region 不再使用的父类属性 english:parent class attributes that are no longer used
20 [browsable(false)]
21 public new int conerradius
22 {
23 get;
24 set;
25 }
26 [browsable(false)]
27 public new bool isradius
28 {
29 get;
30 set;
31 }
32
33 [browsable(false)]
34 public new color fillcolor
35 {
36 get;
37 set;
38 }
39 #endregion
40
41
42 [description("值变更事件"), category("自定义")]
43 public event eventhandler valuechanged;
44 int m_value = 0;
45 [description("当前属性"), category("自定义")]
46 public int value
47 {
48 set
49 {
50 if (value > m_maxvalue)
51 m_value = m_maxvalue;
52 else if (value < 0)
53 m_value = 0;
54 else
55 m_value = value;
56 if (valuechanged != null)
57 valuechanged(this, null);
58 ucwave1.height = (int)((double)m_value / (double)m_maxvalue * this.height) + ucwave1.waveheight;
59 refresh();
60 }
61 get
62 {
63 return m_value;
64 }
65 }
66
67 private int m_maxvalue = 100;
68
69 [description("最大值"), category("自定义")]
70 public int maxvalue
71 {
72 get { return m_maxvalue; }
73 set
74 {
75 if (value < m_value)
76 m_maxvalue = m_value;
77 else
78 m_maxvalue = value;
79 refresh();
80 }
81 }
82
83 public override font font
84 {
85 get
86 {
87 return base.font;
88 }
89 set
90 {
91 base.font = value;
92 }
93 }
94
95 public override color forecolor
96 {
97 get
98 {
99 return base.forecolor;
100 }
101 set
102 {
103 base.forecolor = value;
104 }
105 }
106
107 [description("值颜色"), category("自定义")]
108 public color valuecolor
109 {
110 get { return this.ucwave1.wavecolor; }
111 set
112 {
113 this.ucwave1.wavecolor = value;
114 }
115 }
116
117 [description("边框宽度"), category("自定义")]
118 public override int rectwidth
119 {
120 get
121 {
122 return base.rectwidth;
123 }
124 set
125 {
126 if (value < 4)
127 base.rectwidth = 4;
128 else
129 base.rectwidth = value;
130 }
131 }
构造函数一些设置
1 public ucprocesswave()
2 {
3 initializecomponent();
4 this.setstyle(controlstyles.allpaintinginwmpaint, true);
5 this.setstyle(controlstyles.doublebuffer, true);
6 this.setstyle(controlstyles.resizeredraw, true);
7 this.setstyle(controlstyles.selectable, true);
8 this.setstyle(controlstyles.supportstransparentbackcolor, true);
9 this.setstyle(controlstyles.userpaint, true);
10 base.isradius = true;
11 base.isshowrect = false;
12 rectwidth = 4;
13 rectcolor = color.white;
14 ucwave1.height = (int)((double)m_value / (double)m_maxvalue * this.height) + ucwave1.waveheight;
15 this.sizechanged += ucprocesswave_sizechanged;
16 this.ucwave1.onpainted += ucwave1_painted;
17 base.conerradius = math.min(this.width, this.height);
18 }
重绘
1 protected override void onpaint(painteventargs e)
2 {
3 base.onpaint(e);
4 e.graphics.setgdihigh();
5 if (!m_isrectangle)
6 {
7 //这里曲线救国，因为设置了控件区域导致的毛边，通过画一个没有毛边的圆遮挡
8 solidbrush solidbrush = new solidbrush(color.white);
9 e.graphics.drawellipse(new pen(solidbrush, 2), new rectangle(-1, -1, this.width + 2, this.height + 2));
10 }
11 string strvalue = ((double)m_value / (double)m_maxvalue).tostring("0.%");
12 system.drawing.sizef sizef = e.graphics.measurestring(strvalue, font);
13 e.graphics.drawstring(strvalue, font, new solidbrush(forecolor), new pointf((this.width - sizef.width) / 2, (this.height - sizef.height) / 2 + 1));
14 }
波形控件重绘时处理
1 void ucwave1_painted(object sender, painteventargs e)
2 {
3 e.graphics.setgdihigh();
4 if (isshowrect)
5 {
6 if (m_isrectangle)
7 {
8 color rectcolor = rectcolor;
9 pen pen = new pen(rectcolor, (float)rectwidth);
10 rectangle clientrectangle = new rectangle(0, this.ucwave1.height - this.height, this.width, this.height);
11 graphicspath graphicspath = new graphicspath();
12 graphicspath.addarc(clientrectangle.x, clientrectangle.y, 10, 10, 180f, 90f);
13 graphicspath.addarc(clientrectangle.width - 10 - 1, clientrectangle.y, 10, 10, 270f, 90f);
14 graphicspath.addarc(clientrectangle.width - 10 - 1, clientrectangle.bottom - 10 - 1, 10, 10, 0f, 90f);
15 graphicspath.addarc(clientrectangle.x, clientrectangle.bottom - 10 - 1, 10, 10, 90f, 90f);
16 graphicspath.closefigure();
17 e.graphics.drawpath(pen, graphicspath);
18 }
19 else
20 {
21 solidbrush solidbrush = new solidbrush(rectcolor);
22 e.graphics.drawellipse(new pen(solidbrush, rectwidth), new rectangle(0, this.ucwave1.height - this.height, this.width, this.height));
23 }
24 }
25
26 if (!m_isrectangle)
27 {
28 //这里曲线救国，因为设置了控件区域导致的毛边，通过画一个没有毛边的圆遮挡
29 solidbrush solidbrush1 = new solidbrush(color.white);
30 e.graphics.drawellipse(new pen(solidbrush1, 2), new rectangle(-1, this.ucwave1.height - this.height - 1, this.width + 2, this.height + 2));
31 }
32 string strvalue = ((double)m_value / (double)m_maxvalue).tostring("0.%");
33 system.drawing.sizef sizef = e.graphics.measurestring(strvalue, font);
34 e.graphics.drawstring(strvalue, font, new solidbrush(forecolor), new pointf((this.width - sizef.width) / 2, (this.ucwave1.height - this.height) + (this.height - sizef.height) / 2));
35 }
不知道你们有没有注意这句话
//这里曲线救国，因为设置了控件区域导致的毛边，通过画一个没有毛边的圆遮挡
因为设置原价导致了区域毛边，所有画个没有毛边的边框覆盖之
完整代码
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 ucprocesswave : uccontrolbase
14 {
15 private bool m_isrectangle = false;
16 [description("是否矩形"), category("自定义")]
17 public bool isrectangle
18 {
19 get { return m_isrectangle; }
20 set
21 {
22 m_isrectangle = value;
23 if (value)
24 {
25 base.conerradius = 10;
26 }
27 else
28 {
29 base.conerradius = math.min(this.width, this.height);
30 }
31 }
32 }
33 #region 不再使用的父类属性 english:parent class attributes that are no longer used
34 [browsable(false)]
35 public new int conerradius
36 {
37 get;
38 set;
39 }
40 [browsable(false)]
41 public new bool isradius
42 {
43 get;
44 set;
45 }
46
47 [browsable(false)]
48 public new color fillcolor
49 {
50 get;
51 set;
52 }
53 #endregion
54
55
56 [description("值变更事件"), category("自定义")]
57 public event eventhandler valuechanged;
58 int m_value = 0;
59 [description("当前属性"), category("自定义")]
60 public int value
61 {
62 set
63 {
64 if (value > m_maxvalue)
65 m_value = m_maxvalue;
66 else if (value < 0)
67 m_value = 0;
68 else
69 m_value = value;
70 if (valuechanged != null)
71 valuechanged(this, null);
72 ucwave1.height = (int)((double)m_value / (double)m_maxvalue * this.height) + ucwave1.waveheight;
73 refresh();
74 }
75 get
76 {
77 return m_value;
78 }
79 }
80
81 private int m_maxvalue = 100;
82
83 [description("最大值"), category("自定义")]
84 public int maxvalue
85 {
86 get { return m_maxvalue; }
87 set
88 {
89 if (value < m_value)
90 m_maxvalue = m_value;
91 else
92 m_maxvalue = value;
93 refresh();
94 }
95 }
96
97 public override font font
98 {
99 get
100 {
101 return base.font;
102 }
103 set
104 {
105 base.font = value;
106 }
107 }
108
109 public override color forecolor
110 {
111 get
112 {
113 return base.forecolor;
114 }
115 set
116 {
117 base.forecolor = value;
118 }
119 }
120
121 [description("值颜色"), category("自定义")]
122 public color valuecolor
123 {
124 get { return this.ucwave1.wavecolor; }
125 set
126 {
127 this.ucwave1.wavecolor = value;
128 }
129 }
130
131 [description("边框宽度"), category("自定义")]
132 public override int rectwidth
133 {
134 get
135 {
136 return base.rectwidth;
137 }
138 set
139 {
140 if (value < 4)
141 base.rectwidth = 4;
142 else
143 base.rectwidth = value;
144 }
145 }
146
147 public ucprocesswave()
148 {
149 initializecomponent();
150 this.setstyle(controlstyles.allpaintinginwmpaint, true);
151 this.setstyle(controlstyles.doublebuffer, true);
152 this.setstyle(controlstyles.resizeredraw, true);
153 this.setstyle(controlstyles.selectable, true);
154 this.setstyle(controlstyles.supportstransparentbackcolor, true);
155 this.setstyle(controlstyles.userpaint, true);
156 base.isradius = true;
157 base.isshowrect = false;
158 rectwidth = 4;
159 rectcolor = color.white;
160 ucwave1.height = (int)((double)m_value / (double)m_maxvalue * this.height) + ucwave1.waveheight;
161 this.sizechanged += ucprocesswave_sizechanged;
162 this.ucwave1.onpainted += ucwave1_painted;
163 base.conerradius = math.min(this.width, this.height);
164 }
165
166 void ucwave1_painted(object sender, painteventargs e)
167 {
168 e.graphics.setgdihigh();
169 if (isshowrect)
170 {
171 if (m_isrectangle)
172 {
173 color rectcolor = rectcolor;
174 pen pen = new pen(rectcolor, (float)rectwidth);
175 rectangle clientrectangle = new rectangle(0, this.ucwave1.height - this.height, this.width, this.height);
176 graphicspath graphicspath = new graphicspath();
177 graphicspath.addarc(clientrectangle.x, clientrectangle.y, 10, 10, 180f, 90f);
178 graphicspath.addarc(clientrectangle.width - 10 - 1, clientrectangle.y, 10, 10, 270f, 90f);
179 graphicspath.addarc(clientrectangle.width - 10 - 1, clientrectangle.bottom - 10 - 1, 10, 10, 0f, 90f);
180 graphicspath.addarc(clientrectangle.x, clientrectangle.bottom - 10 - 1, 10, 10, 90f, 90f);
181 graphicspath.closefigure();
182 e.graphics.drawpath(pen, graphicspath);
183 }
184 else
185 {
186 solidbrush solidbrush = new solidbrush(rectcolor);
187 e.graphics.drawellipse(new pen(solidbrush, rectwidth), new rectangle(0, this.ucwave1.height - this.height, this.width, this.height));
188 }
189 }
190
191 if (!m_isrectangle)
192 {
193 //这里曲线救国，因为设置了控件区域导致的毛边，通过画一个没有毛边的圆遮挡
194 solidbrush solidbrush1 = new solidbrush(color.white);
195 e.graphics.drawellipse(new pen(solidbrush1, 2), new rectangle(-1, this.ucwave1.height - this.height - 1, this.width + 2, this.height + 2));
196 }
197 string strvalue = ((double)m_value / (double)m_maxvalue).tostring("0.%");
198 system.drawing.sizef sizef = e.graphics.measurestring(strvalue, font);
199 e.graphics.drawstring(strvalue, font, new solidbrush(forecolor), new pointf((this.width - sizef.width) / 2, (this.ucwave1.height - this.height) + (this.height - sizef.height) / 2));
200 }
201
202 void ucprocesswave_sizechanged(object sender, eventargs e)
203 {
204 if (!m_isrectangle)
205 {
206 base.conerradius = math.min(this.width, this.height);
207 if (this.width != this.height)
208 {
209 this.size = new size(math.min(this.width, this.height), math.min(this.width, this.height));
210 }
211 }
212 }
213
214 protected override void onpaint(painteventargs e)
215 {
216 base.onpaint(e);
217 e.graphics.setgdihigh();
218 if (!m_isrectangle)
219 {
220 //这里曲线救国，因为设置了控件区域导致的毛边，通过画一个没有毛边的圆遮挡
221 solidbrush solidbrush = new solidbrush(color.white);
222 e.graphics.drawellipse(new pen(solidbrush, 2), new rectangle(-1, -1, this.width + 2, this.height + 2));
223 }
224 string strvalue = ((double)m_value / (double)m_maxvalue).tostring("0.%");
225 system.drawing.sizef sizef = e.graphics.measurestring(strvalue, font);
226 e.graphics.drawstring(strvalue, font, new solidbrush(forecolor), new pointf((this.width - sizef.width) / 2, (this.height - sizef.height) / 2 + 1));
227 }
228 }
229 }
1 namespace hzh_controls.controls
2 {
3 partial class ucprocesswave
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.ucwave1 = new hzh_controls.controls.ucwave();
32 this.suspendlayout();
33 //
34 // ucwave1
35 //
36 this.ucwave1.dock = system.windows.forms.dockstyle.bottom;
37 this.ucwave1.location = new system.drawing.point(0, 140);
38 this.ucwave1.name = "ucwave1";
39 this.ucwave1.size = new system.drawing.size(150, 10);
40 this.ucwave1.tabindex = 0;
41 this.ucwave1.text = "ucwave1";
42 this.ucwave1.wavecolor = system.drawing.color.fromargb(((int)(((byte)(73)))), ((int)(((byte)(119)))), ((int)(((byte)(232)))));
43 this.ucwave1.waveheight = 15;
44 this.ucwave1.wavesleep = 100;
45 this.ucwave1.wavewidth = 100;
46 //
47 // ucprocesswave
48 //
49 this.autoscalemode = system.windows.forms.autoscalemode.none;
50 this.backcolor = system.drawing.color.fromargb(((int)(((byte)(197)))), ((int)(((byte)(229)))), ((int)(((byte)(250)))));
51 this.controls.add(this.ucwave1);
52 this.name = "ucprocesswave";
53 this.size = new system.drawing.size(150, 150);
54 this.resumelayout(false);
55
56 }
57
58 #endregion
59
60 private ucwave ucwave1;
61 }
62 }
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