（四十一）c#Winform自定义控件-进度条
程序员文章站
2022-04-14 15:43:10
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。 开源地址：https://gitee.com/kwwwvagaa/net_winform_custom_control 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 Nu ......
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。
开源地址：
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
准备工作
前面写过一个进度条，但是并不是太好，这次用gdi+再重绘一个，不了解gdi+的自行百度了解下先
开始
添加一个类，命名ucprocessline，继承control
添加一个枚举，用以如何显示值
1 public enum valuetexttype
2 {
3 none,
4 /// <summary>
5 /// 百分比
6 /// </summary>
7 percent,
8 /// <summary>
9 /// 数值
10 /// </summary>
11 absolute
12 }
添加一些属性
1 [description("值变更事件"), category("自定义")]
2 public event eventhandler valuechanged;
3 int m_value = 0;
4 [description("当前属性"), category("自定义")]
5 public int value
6 {
7 set
8 {
9 if (value > m_maxvalue)
10 m_value = m_maxvalue;
11 else if (value < 0)
12 m_value = 0;
13 else
14 m_value = value;
15 if (valuechanged != null)
16 valuechanged(this, null);
17 refresh();
18 }
19 get
20 {
21 return m_value;
22 }
23 }
24
25 private int m_maxvalue = 100;
26
27 [description("最大值"), category("自定义")]
28 public int maxvalue
29 {
30 get { return m_maxvalue; }
31 set
32 {
33 if (value < m_value)
34 m_maxvalue = m_value;
35 else
36 m_maxvalue = value;
37 refresh();
38 }
39 }
40
41 color m_valuecolor = color.fromargb(73, 119, 232);
42
43 [description("值进度条颜色"), category("自定义")]
44 public color valuecolor
45 {
46 get { return m_valuecolor; }
47 set
48 {
49 m_valuecolor = value;
50 refresh();
51 }
52 }
53
54 private color m_valuebgcolor = color.white;
55
56 [description("值背景色"), category("自定义")]
57 public color valuebgcolor
58 {
59 get { return m_valuebgcolor; }
60 set
61 {
62 m_valuebgcolor = value;
63 refresh();
64 }
65 }
66
67 private color m_bordercolor = color.fromargb(192, 192, 192);
68
69 [description("边框颜色"), category("自定义")]
70 public color bordercolor
71 {
72 get { return m_bordercolor; }
73 set
74 {
75 m_bordercolor = value;
76 refresh();
77 }
78 }
79
80 [description("值字体"), category("自定义")]
81 public override font font
82 {
83 get
84 {
85 return base.font;
86 }
87 set
88 {
89 base.font = value;
90 refresh();
91 }
92 }
93
94 [description("值字体颜色"), category("自定义")]
95 public override system.drawing.color forecolor
96 {
97 get
98 {
99 return base.forecolor;
100 }
101 set
102 {
103 base.forecolor = value;
104 refresh();
105 }
106 }
107 private valuetexttype m_valuetexttype = valuetexttype.percent;
108
109 [description("值显示样式"), category("自定义")]
110 public valuetexttype valuetexttype
111 {
112 get { return m_valuetexttype; }
113 set
114 {
115 m_valuetexttype = value;
116 refresh();
117 }
118 }
重绘
1 protected override void onpaint(painteventargs e)
2 {
3 console.writeline(datetime.now);
4 base.onpaint(e);
5 graphics g = e.graphics;
6 g.setgdihigh();
7
8 brush sb = new solidbrush(m_valuebgcolor);
9 g.fillrectangle(sb, new rectangle(base.clientrectangle.x, base.clientrectangle.y, base.clientrectangle.width - 3, base.clientrectangle.height - 2));
10 graphicspath path1 = controlhelper.createroundedrectanglepath(new rectangle(base.clientrectangle.x, base.clientrectangle.y + 1, base.clientrectangle.width - 3, base.clientrectangle.height - 4), 3);
11 g.drawpath(new pen(m_bordercolor, 1), path1);
12 lineargradientbrush lgb = new lineargradientbrush(new point(0, 0), new point(0, base.clientrectangle.height - 3), m_valuecolor, color.fromargb(200, m_valuecolor.r, m_valuecolor.g, m_valuecolor.b));
13 g.fillpath(lgb, controlhelper.createroundedrectanglepath(new rectangle(0, (base.clientrectangle.height - (base.clientrectangle.height - 3)) / 2, (base.clientrectangle.width - 3) * value / m_maxvalue, base.clientrectangle.height - 4), 3));
14 string strvalue = string.empty;
15 if (m_valuetexttype == hzh_controls.controls.valuetexttype.percent)
16 strvalue = ((float)value / (float)m_maxvalue).tostring("0%");
17 else if (m_valuetexttype == hzh_controls.controls.valuetexttype.absolute)
18 strvalue = value + "/" + m_maxvalue;
19 if (!string.isnullorempty(strvalue))
20 {
21 system.drawing.sizef sizef = g.measurestring(strvalue, font);
22 g.drawstring(strvalue, font, new solidbrush(forecolor), new pointf((this.width - sizef.width) / 2, (this.height - sizef.height) / 2 + 1));
23 }
24 }
完整代码来一份
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 class ucprocessline : control
14 {
15 [description("值变更事件"), category("自定义")]
16 public event eventhandler valuechanged;
17 int m_value = 0;
18 [description("当前属性"), category("自定义")]
19 public int value
20 {
21 set
22 {
23 if (value > m_maxvalue)
24 m_value = m_maxvalue;
25 else if (value < 0)
26 m_value = 0;
27 else
28 m_value = value;
29 if (valuechanged != null)
30 valuechanged(this, null);
31 refresh();
32 }
33 get
34 {
35 return m_value;
36 }
37 }
38
39 private int m_maxvalue = 100;
40
41 [description("最大值"), category("自定义")]
42 public int maxvalue
43 {
44 get { return m_maxvalue; }
45 set
46 {
47 if (value < m_value)
48 m_maxvalue = m_value;
49 else
50 m_maxvalue = value;
51 refresh();
52 }
53 }
54
55 color m_valuecolor = color.fromargb(73, 119, 232);
56
57 [description("值进度条颜色"), category("自定义")]
58 public color valuecolor
59 {
60 get { return m_valuecolor; }
61 set
62 {
63 m_valuecolor = value;
64 refresh();
65 }
66 }
67
68 private color m_valuebgcolor = color.white;
69
70 [description("值背景色"), category("自定义")]
71 public color valuebgcolor
72 {
73 get { return m_valuebgcolor; }
74 set
75 {
76 m_valuebgcolor = value;
77 refresh();
78 }
79 }
80
81 private color m_bordercolor = color.fromargb(192, 192, 192);
82
83 [description("边框颜色"), category("自定义")]
84 public color bordercolor
85 {
86 get { return m_bordercolor; }
87 set
88 {
89 m_bordercolor = value;
90 refresh();
91 }
92 }
93
94 [description("值字体"), category("自定义")]
95 public override font font
96 {
97 get
98 {
99 return base.font;
100 }
101 set
102 {
103 base.font = value;
104 refresh();
105 }
106 }
107
108 [description("值字体颜色"), category("自定义")]
109 public override system.drawing.color forecolor
110 {
111 get
112 {
113 return base.forecolor;
114 }
115 set
116 {
117 base.forecolor = value;
118 refresh();
119 }
120 }
121 private valuetexttype m_valuetexttype = valuetexttype.percent;
122
123 [description("值显示样式"), category("自定义")]
124 public valuetexttype valuetexttype
125 {
126 get { return m_valuetexttype; }
127 set
128 {
129 m_valuetexttype = value;
130 refresh();
131 }
132 }
133 public ucprocessline()
134 {
135 size = new size(200, 15);
136 forecolor = color.fromargb(255, 77, 59);
137 font = new font("arial unicode ms", 10);
138 this.setstyle(controlstyles.allpaintinginwmpaint, true);
139 this.setstyle(controlstyles.doublebuffer, true);
140 this.setstyle(controlstyles.resizeredraw, true);
141 this.setstyle(controlstyles.selectable, true);
142 this.setstyle(controlstyles.supportstransparentbackcolor, true);
143 this.setstyle(controlstyles.userpaint, true);
144 }
145
146 protected override void onpaint(painteventargs e)
147 {
148 console.writeline(datetime.now);
149 base.onpaint(e);
150 graphics g = e.graphics;
151 g.setgdihigh();
152
153 brush sb = new solidbrush(m_valuebgcolor);
154 g.fillrectangle(sb, new rectangle(base.clientrectangle.x, base.clientrectangle.y, base.clientrectangle.width - 3, base.clientrectangle.height - 2));
155 graphicspath path1 = controlhelper.createroundedrectanglepath(new rectangle(base.clientrectangle.x, base.clientrectangle.y + 1, base.clientrectangle.width - 3, base.clientrectangle.height - 4), 3);
156 g.drawpath(new pen(m_bordercolor, 1), path1);
157 lineargradientbrush lgb = new lineargradientbrush(new point(0, 0), new point(0, base.clientrectangle.height - 3), m_valuecolor, color.fromargb(200, m_valuecolor.r, m_valuecolor.g, m_valuecolor.b));
158 g.fillpath(lgb, controlhelper.createroundedrectanglepath(new rectangle(0, (base.clientrectangle.height - (base.clientrectangle.height - 3)) / 2, (base.clientrectangle.width - 3) * value / m_maxvalue, base.clientrectangle.height - 4), 3));
159 string strvalue = string.empty;
160 if (m_valuetexttype == hzh_controls.controls.valuetexttype.percent)
161 strvalue = ((float)value / (float)m_maxvalue).tostring("0%");
162 else if (m_valuetexttype == hzh_controls.controls.valuetexttype.absolute)
163 strvalue = value + "/" + m_maxvalue;
164 if (!string.isnullorempty(strvalue))
165 {
166 system.drawing.sizef sizef = g.measurestring(strvalue, font);
167 g.drawstring(strvalue, font, new solidbrush(forecolor), new pointf((this.width - sizef.width) / 2, (this.height - sizef.height) / 2 + 1));
168 }
169 }
170
171 }
172
173 public enum valuetexttype
174 {
175 none,
176 /// <summary>
177 /// 百分比
178 /// </summary>
179 percent,
180 /// <summary>
181 /// 数值
182 /// </summary>
183 absolute
184 }
185 }
用处及效果
最后的话
如果你喜欢的话，请到 点个星 星吧