（七十二）c#Winform自定义控件-雷达图
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2022-06-05 20:17:24
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：
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
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nuget
install-package hzh_controls
目录
用处及效果
准备工作
gdi+画的，不会的可以先百度了解下
开始
添加一个类ucradarchart ，继承 usercontrol
添加一些控制属性
1 /// <summary>
2 /// the split count
3 /// </summary>
4 private int splitcount = 5;
5 /// <summary>
6 /// gets or sets the split count.
7 /// </summary>
8 /// <value>the split count.</value>
9 [browsable(true)]
10 [category("自定义")]
11 [description("获取或设置分隔份数")]
12 public int splitcount
13 {
14 get { return splitcount; }
15 set
16 {
17 splitcount = value;
18 invalidate();
19 }
20 }
21
22 /// <summary>
23 /// the split odd color
24 /// </summary>
25 private color splitoddcolor = color.white;
26 /// <summary>
27 /// 分隔奇数栏背景色
28 /// </summary>
29 /// <value>the color of the split odd.</value>
30 [browsable(true)]
31 [category("自定义")]
32 [description("获取或设置分隔奇数栏背景色")]
33 public color splitoddcolor
34 {
35 get { return splitoddcolor; }
36 set
37 {
38 splitoddcolor = value;
39 invalidate();
40 }
41 }
42 /// <summary>
43 /// the split even color
44 /// </summary>
45 private color splitevencolor = color.fromargb(232, 232, 232);
46 /// <summary>
47 /// 分隔偶数栏背景色
48 /// </summary>
49 /// <value>the color of the split even.</value>
50 [browsable(true)]
51 [category("自定义")]
52 [description("获取或设置分隔偶数栏背景色")]
53 public color splitevencolor
54 {
55 get { return splitevencolor; }
56 set { splitevencolor = value; }
57 }
58
59 /// <summary>
60 /// the line color
61 /// </summary>
62 private color linecolor = color.fromargb(153, 153, 153);
63 /// <summary>
64 /// gets or sets the color of the line.
65 /// </summary>
66 /// <value>the color of the line.</value>
67 [browsable(true)]
68 [category("自定义")]
69 [description("获取或设置线条色")]
70 public color linecolor
71 {
72 get { return linecolor; }
73 set
74 {
75 linecolor = value;
76 invalidate();
77 }
78 }
79
80 /// <summary>
81 /// the radar positions
82 /// </summary>
83 private radarposition[] radarpositions;
84 /// <summary>
85 /// 节点列表，至少需要3个
86 /// </summary>
87 /// <value>the radar positions.</value>
88 [browsable(true)]
89 [category("自定义")]
90 [description("获取或设置节点，至少需要3个")]
91 public radarposition[] radarpositions
92 {
93 get { return radarpositions; }
94 set
95 {
96 radarpositions = value;
97 invalidate();
98 }
99 }
100
101 /// <summary>
102 /// the title
103 /// </summary>
104 private string title;
105 /// <summary>
106 /// 标题
107 /// </summary>
108 /// <value>the title.</value>
109 [browsable(true)]
110 [category("自定义")]
111 [description("获取或设置标题")]
112 public string title
113 {
114 get { return title; }
115 set
116 {
117 title = value;
118 resettitlesize();
119 invalidate();
120 }
121 }
122
123 /// <summary>
124 /// the title font
125 /// </summary>
126 private font titlefont = new font("微软雅黑", 12);
127 /// <summary>
128 /// gets or sets the title font.
129 /// </summary>
130 /// <value>the title font.</value>
131 [browsable(true)]
132 [category("自定义")]
133 [description("获取或设置标题字体")]
134 public font titlefont
135 {
136 get { return titlefont; }
137 set
138 {
139 titlefont = value;
140 resettitlesize();
141 invalidate();
142 }
143 }
144
145 /// <summary>
146 /// the title color
147 /// </summary>
148 private color titlecolor = color.black;
149 /// <summary>
150 /// gets or sets the color of the title.
151 /// </summary>
152 /// <value>the color of the title.</value>
153 [browsable(true)]
154 [category("自定义")]
155 [description("获取或设置标题文本颜色")]
156 public color titlecolor
157 {
158 get { return titlecolor; }
159 set
160 {
161 titlecolor = value;
162 invalidate();
163 }
164 }
165
166 /// <summary>
167 /// the lines
168 /// </summary>
169 private radarline[] lines;
170 /// <summary>
171 /// gets or sets the lines.
172 /// </summary>
173 /// <value>the lines.</value>
174 [browsable(true)]
175 [category("自定义")]
176 [description("获取或设置值线条，values长度必须与radarpositions长度一致，否则无法显示")]
177 public radarline[] lines
178 {
179 get { return lines; }
180 set
181 {
182 lines = value;
183 invalidate();
184 }
185 }
186
187
188 /// <summary>
189 /// the title size
190 /// </summary>
191 sizef titlesize = sizef.empty;
192 /// <summary>
193 /// the m rect working
194 /// </summary>
195 private rectanglef m_rectworking = rectangle.empty;
196 /// <summary>
197 /// the line value type size
198 /// </summary>
199 sizef linevaluetypesize = sizef.empty;
200 /// <summary>
201 /// the int line value com count
202 /// </summary>
203 int intlinevaluecomcount = 0;
204 /// <summary>
205 /// the int line value row count
206 /// </summary>
207 int intlinevaluerowcount = 0;
属性改变时处理工作区域
1 /// <summary>
2 /// handles the sizechanged event of the ucradarchart control.
3 /// </summary>
4 /// <param name="sender">the source of the event.</param>
5 /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
6 void ucradarchart_sizechanged(object sender, eventargs e)
7 {
8 resetworkingrect();
9 }
10
11 /// <summary>
12 /// resets the working rect.
13 /// </summary>
14 private void resetworkingrect()
15 {
16 if (lines != null && lines.length > 0)
17 {
18 using (graphics g = this.creategraphics())
19 {
20 foreach (var item in lines)
21 {
22 var s = g.measurestring(item.name, font);
23 if (s.width > linevaluetypesize.width)
24 linevaluetypesize = s;
25 }
26 }
27 }
28 var linetypepanelheight = 0f;
29 if (linevaluetypesize != sizef.empty)
30 {
31 intlinevaluecomcount = (int)(this.width / (linevaluetypesize.width + 25));
32
33 intlinevaluerowcount = lines.length / intlinevaluecomcount;
34 if (lines.length % intlinevaluecomcount != 0)
35 {
36 intlinevaluerowcount++;
37 }
38 linetypepanelheight = (linevaluetypesize.height + 10) * intlinevaluerowcount;
39 }
40 var min = math.min(this.width, this.height - titlesize.height - linetypepanelheight);
41 var rectworking = new rectanglef((this.width - min) / 2 + 10, titlesize.height + linetypepanelheight + 10, min - 10, min - 10);
42 //处理文字
43 float fltsplitangle = 360f / radarpositions.length;
44 float fltradiuswidth = rectworking.width / 2;
45 float minx = rectworking.left;
46 float maxx = rectworking.right;
47 float miny = rectworking.top;
48 float maxy = rectworking.bottom;
49 using (graphics g = this.creategraphics())
50 {
51 pointf centrepoint = new pointf(rectworking.left + rectworking.width / 2, rectworking.top + rectworking.height / 2);
52 for (int i = 0; i < radarpositions.length; i++)
53 {
54 float fltangle = 270 + fltsplitangle * i;
55 fltangle = fltangle % 360;
56 pointf _point = getpointbyangle(centrepoint, fltangle, fltradiuswidth);
57 var _txtsize = g.measurestring(radarpositions[i].text, font);
58 if (_point.x < centrepoint.x)//左
59 {
60 if (_point.x - _txtsize.width < minx)
61 {
62 minx = rectworking.left + _txtsize.width;
63 }
64 }
65 else//右
66 {
67 if (_point.x + _txtsize.width > maxx)
68 {
69 maxx = rectworking.right - _txtsize.width;
70 }
71 }
72 if (_point.y < centrepoint.y)//上
73 {
74 if (_point.y - _txtsize.height < miny)
75 {
76 miny = rectworking.top + _txtsize.height;
77 }
78 }
79 else//下
80 {
81 if (_point.y + _txtsize.height > maxy)
82 {
83 maxy = rectworking.bottom - _txtsize.height;
84 }
85 }
86 }
87 }
88
89 min = math.min(maxx - minx, maxy - miny);
90 m_rectworking = new rectanglef(minx, miny, min, min);
91 }
重绘
1 protected override void onpaint(painteventargs e)
2 {
3 base.onpaint(e);
4 var g = e.graphics;
5 g.setgdihigh();
6
7 if (!string.isnullorempty(title))
8 {
9 g.drawstring(title, titlefont, new solidbrush(titlecolor), new rectanglef(m_rectworking.left + (m_rectworking.width - titlesize.width) / 2, m_rectworking.top - titlesize.height - 10 - (intlinevaluerowcount * (10 + linevaluetypesize.height)), titlesize.width, titlesize.height));
10 }
11
12 if (radarpositions.length <= 2)
13 {
14 g.drawstring("至少需要3个顶点", font, new solidbrush(color.black), m_rectworking, new stringformat() { alignment = stringalignment.center, linealignment = stringalignment.center });
15 return;
16 }
17
18 var y = m_rectworking.top - 20 - (intlinevaluerowcount * (10 + linevaluetypesize.height));
19
20 for (int i = 0; i < intlinevaluerowcount; i++)
21 {
22 var x = 0f;
23 int intcount = intlinevaluecomcount;
24 if (i == intlinevaluerowcount - 1)
25 {
26 intcount = lines.length % intlinevaluecomcount;
27
28 }
29 x = m_rectworking.left + (m_rectworking.width - intcount * (linevaluetypesize.width + 25)) / 2;
30
31 for (int j = 0; j < intcount; j++)
32 {
33 g.fillrectangle(new solidbrush(lines[i * intlinevaluecomcount + j].linecolor.value), new rectanglef(x + (linevaluetypesize.width + 25)*j, y + linevaluetypesize.height * i, 15, linevaluetypesize.height));
34 g.drawstring(lines[i * intlinevaluecomcount + j].name, font, new solidbrush(lines[i * intlinevaluecomcount + j].linecolor.value), new pointf(x + (linevaluetypesize.width + 25) * j + 20, y + linevaluetypesize.height * i));
35 }
36 }
37
38 float fltsplitangle = 360f / radarpositions.length;
39 float fltradiuswidth = m_rectworking.width / 2;
40 float fltsplitradiuswidth = fltradiuswidth / splitcount;
41 pointf centrepoint = new pointf(m_rectworking.left + m_rectworking.width / 2, m_rectworking.top + m_rectworking.height / 2);
42
43 list<list<pointf>> lstringpoints = new list<list<pointf>>(splitcount);
44 //分割点
45 for (int i = 0; i < radarpositions.length; i++)
46 {
47 float fltangle = 270 + fltsplitangle * i;
48 fltangle = fltangle % 360;
49 for (int j = 0; j < splitcount; j++)
50 {
51 if (i == 0)
52 {
53 lstringpoints.add(new list<pointf>());
54 }
55 pointf _point = getpointbyangle(centrepoint, fltangle, fltsplitradiuswidth * (splitcount - j));
56 lstringpoints[j].add(_point);
57 }
58 }
59
60 for (int i = 0; i < lstringpoints.count; i++)
61 {
62 var ring = lstringpoints[i];
63 graphicspath path = new graphicspath();
64 path.addlines(ring.toarray());
65 if ((lstringpoints.count - i) % 2 == 0)
66 {
67 g.fillpath(new solidbrush(splitevencolor), path);
68 }
69 else
70 {
71 g.fillpath(new solidbrush(splitoddcolor), path);
72 }
73 }
74
75 //画环
76 foreach (var ring in lstringpoints)
77 {
78 ring.add(ring[0]);
79 g.drawlines(new pen(new solidbrush(linecolor)), ring.toarray());
80 }
81 //分割线
82 foreach (var item in lstringpoints[0])
83 {
84 g.drawline(new pen(new solidbrush(linecolor)), centrepoint, item);
85 }
86
87 //值
88 for (int i = 0; i < lines.length; i++)
89 {
90 var line = lines[i];
91 if (line.values.length != radarpositions.length)//如果数据长度和节点长度不一致则不绘制
92 continue;
93 if (line.linecolor == null || line.linecolor == color.empty || line.linecolor == color.transparent)
94 line.linecolor = controlhelper.colors[i + 13];
95 list<pointf> ps = new list<pointf>();
96 for (int j = 0; j < radarpositions.length; j++)
97 {
98 float fltangle = 270 + fltsplitangle * j;
99 fltangle = fltangle % 360;
100 pointf _point = getpointbyangle(centrepoint, fltangle, fltradiuswidth * (float)(line.values[j] / radarpositions[i].maxvalue));
101 ps.add(_point);
102 }
103 ps.add(ps[0]);
104 if (line.fillcolor != null && line.fillcolor != color.empty && line.fillcolor != color.transparent)
105 {
106 graphicspath path = new graphicspath();
107 path.addlines(ps.toarray());
108 g.fillpath(new solidbrush(line.fillcolor.value), path);
109 }
110 g.drawlines(new pen(new solidbrush(line.linecolor.value), 2), ps.toarray());
111
112 for (int j = 0; j < radarpositions.length; j++)
113 {
114 var item = ps[j];
115 g.fillellipse(new solidbrush(color.white), new rectanglef(item.x - 3, item.y - 3, 6, 6));
116 g.drawellipse(new pen(new solidbrush(line.linecolor.value)), new rectanglef(item.x - 3, item.y - 3, 6, 6));
117 if (line.showvaluetext)
118 {
119 var valuesize = g.measurestring(line.values[j].tostring("0.##"), font);
120 g.drawstring(line.values[j].tostring("0.##"), font, new solidbrush(line.linecolor.value), new pointf(item.x - valuesize.width / 2, item.y - valuesize.height - 5));
121 }
122 }
123 }
124
125 //文本
126
127 for (int i = 0; i < radarpositions.length; i++)
128 {
129 pointf point = lstringpoints[0][i];
130 var txtsize = g.measurestring(radarpositions[i].text, font);
131
132 if (point.x == centrepoint.x)
133 {
134 if (point.y > centrepoint.y)
135 {
136 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - txtsize.width / 2, point.y + 10));
137 }
138 else
139 {
140 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - txtsize.width / 2, point.y - 10 - txtsize.height));
141 }
142 }
143 else if (point.y == centrepoint.y)
144 {
145 if (point.x < centrepoint.x)
146 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - 10 - txtsize.width, point.y - txtsize.height / 2));
147 else
148 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x + 10, point.y - txtsize.height / 2));
149 }
150 else if (point.x < centrepoint.x)//左
151 {
152 if (point.y < centrepoint.y)//左上
153 {
154 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - 10 - txtsize.width, point.y - 10 + txtsize.height / 2));
155 }
156 else//左下
157 {
158 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - 10 - txtsize.width, point.y + 10 - txtsize.height / 2));
159 }
160 }
161 else
162 {
163 if (point.y < centrepoint.y)//右上
164 {
165 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x + 10, point.y - 10 + txtsize.height / 2));
166 }
167 else//右下
168 {
169 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x + 10, point.y + 10 - txtsize.height / 2));
170 }
171 }
172 }
173
174 }
辅助函数
1 #region 根据中心点、角度、半径计算圆边坐标点 english:calculating the coordinate points of circular edge according to the center point, angle and radius
2 /// <summary>
3 /// 功能描述:根据中心点、角度、半径计算圆边坐标点 english:calculating the coordinate points of circular edge according to the center point, angle and radius
4 /// 作 者:hzh
5 /// 创建日期:2019-09-25 09:46:32
6 /// 任务编号:pos
7 /// </summary>
8 /// <param name="centrepoint">centrepoint</param>
9 /// <param name="fltangle">fltangle</param>
10 /// <param name="fltradiuswidth">fltradiuswidth</param>
11 /// <returns>返回值</returns>
12 private pointf getpointbyangle(pointf centrepoint, float fltangle, float fltradiuswidth)
13 {
14 pointf p = centrepoint;
15 if (fltangle == 0)
16 {
17 p.x += fltradiuswidth;
18 }
19 else if (fltangle == 90)
20 {
21 p.y += fltradiuswidth;
22 }
23 else if (fltangle == 180)
24 {
25 p.x -= fltradiuswidth;
26 }
27 else if (fltangle == 270)
28 {
29 p.y -= fltradiuswidth;
30 }
31 else if (fltangle > 0 && fltangle < 90)
32 {
33 p.y += (float)math.sin(math.pi * (fltangle / 180.00f)) * fltradiuswidth;
34 p.x += (float)math.cos(math.pi * (fltangle / 180.00f)) * fltradiuswidth;
35 }
36 else if (fltangle > 90 && fltangle < 180)
37 {
38 p.y += (float)math.sin(math.pi * ((180 - fltangle) / 180.00f)) * fltradiuswidth;
39 p.x -= (float)math.cos(math.pi * ((180 - fltangle) / 180.00f)) * fltradiuswidth;
40 }
41 else if (fltangle > 180 && fltangle < 270)
42 {
43 p.y -= (float)math.sin(math.pi * ((fltangle - 180) / 180.00f)) * fltradiuswidth;
44 p.x -= (float)math.cos(math.pi * ((fltangle - 180) / 180.00f)) * fltradiuswidth;
45 }
46 else if (fltangle > 270 && fltangle < 360)
47 {
48 p.y -= (float)math.sin(math.pi * ((360 - fltangle) / 180.00f)) * fltradiuswidth;
49 p.x += (float)math.cos(math.pi * ((360 - fltangle) / 180.00f)) * fltradiuswidth;
50 }
51 return p;
52 }
53 #endregion
54
55 /// <summary>
56 /// resets the size of the title.
57 /// </summary>
58 private void resettitlesize()
59 {
60 if (!string.isnullorempty(title))
61 {
62 using (graphics g = this.creategraphics())
63 {
64 titlesize = g.measurestring(title, titlefont);
65 }
66 }
67 else
68 {
69 titlesize = sizef.empty;
70 }
71 titlesize.height += 20;
72 resetworkingrect();
73 }
完整代码
1 // ***********************************************************************
2 // assembly : hzh_controls
3 // created : 2019-09-25
4 //
5 // ***********************************************************************
6 // <copyright file="ucradarchart.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 ucradarchart.
29 /// implements the <see cref="system.windows.forms.usercontrol" />
30 /// </summary>
31 /// <seealso cref="system.windows.forms.usercontrol" />
32 public class ucradarchart : usercontrol
33 {
34 /// <summary>
35 /// the split count
36 /// </summary>
37 private int splitcount = 5;
38 /// <summary>
39 /// gets or sets the split count.
40 /// </summary>
41 /// <value>the split count.</value>
42 [browsable(true)]
43 [category("自定义")]
44 [description("获取或设置分隔份数")]
45 public int splitcount
46 {
47 get { return splitcount; }
48 set
49 {
50 splitcount = value;
51 invalidate();
52 }
53 }
54
55 /// <summary>
56 /// the split odd color
57 /// </summary>
58 private color splitoddcolor = color.white;
59 /// <summary>
60 /// 分隔奇数栏背景色
61 /// </summary>
62 /// <value>the color of the split odd.</value>
63 [browsable(true)]
64 [category("自定义")]
65 [description("获取或设置分隔奇数栏背景色")]
66 public color splitoddcolor
67 {
68 get { return splitoddcolor; }
69 set
70 {
71 splitoddcolor = value;
72 invalidate();
73 }
74 }
75 /// <summary>
76 /// the split even color
77 /// </summary>
78 private color splitevencolor = color.fromargb(232, 232, 232);
79 /// <summary>
80 /// 分隔偶数栏背景色
81 /// </summary>
82 /// <value>the color of the split even.</value>
83 [browsable(true)]
84 [category("自定义")]
85 [description("获取或设置分隔偶数栏背景色")]
86 public color splitevencolor
87 {
88 get { return splitevencolor; }
89 set { splitevencolor = value; }
90 }
91
92 /// <summary>
93 /// the line color
94 /// </summary>
95 private color linecolor = color.fromargb(153, 153, 153);
96 /// <summary>
97 /// gets or sets the color of the line.
98 /// </summary>
99 /// <value>the color of the line.</value>
100 [browsable(true)]
101 [category("自定义")]
102 [description("获取或设置线条色")]
103 public color linecolor
104 {
105 get { return linecolor; }
106 set
107 {
108 linecolor = value;
109 invalidate();
110 }
111 }
112
113 /// <summary>
114 /// the radar positions
115 /// </summary>
116 private radarposition[] radarpositions;
117 /// <summary>
118 /// 节点列表，至少需要3个
119 /// </summary>
120 /// <value>the radar positions.</value>
121 [browsable(true)]
122 [category("自定义")]
123 [description("获取或设置节点，至少需要3个")]
124 public radarposition[] radarpositions
125 {
126 get { return radarpositions; }
127 set
128 {
129 radarpositions = value;
130 invalidate();
131 }
132 }
133
134 /// <summary>
135 /// the title
136 /// </summary>
137 private string title;
138 /// <summary>
139 /// 标题
140 /// </summary>
141 /// <value>the title.</value>
142 [browsable(true)]
143 [category("自定义")]
144 [description("获取或设置标题")]
145 public string title
146 {
147 get { return title; }
148 set
149 {
150 title = value;
151 resettitlesize();
152 invalidate();
153 }
154 }
155
156 /// <summary>
157 /// the title font
158 /// </summary>
159 private font titlefont = new font("微软雅黑", 12);
160 /// <summary>
161 /// gets or sets the title font.
162 /// </summary>
163 /// <value>the title font.</value>
164 [browsable(true)]
165 [category("自定义")]
166 [description("获取或设置标题字体")]
167 public font titlefont
168 {
169 get { return titlefont; }
170 set
171 {
172 titlefont = value;
173 resettitlesize();
174 invalidate();
175 }
176 }
177
178 /// <summary>
179 /// the title color
180 /// </summary>
181 private color titlecolor = color.black;
182 /// <summary>
183 /// gets or sets the color of the title.
184 /// </summary>
185 /// <value>the color of the title.</value>
186 [browsable(true)]
187 [category("自定义")]
188 [description("获取或设置标题文本颜色")]
189 public color titlecolor
190 {
191 get { return titlecolor; }
192 set
193 {
194 titlecolor = value;
195 invalidate();
196 }
197 }
198
199 /// <summary>
200 /// the lines
201 /// </summary>
202 private radarline[] lines;
203 /// <summary>
204 /// gets or sets the lines.
205 /// </summary>
206 /// <value>the lines.</value>
207 [browsable(true)]
208 [category("自定义")]
209 [description("获取或设置值线条，values长度必须与radarpositions长度一致，否则无法显示")]
210 public radarline[] lines
211 {
212 get { return lines; }
213 set
214 {
215 lines = value;
216 invalidate();
217 }
218 }
219
220
221 /// <summary>
222 /// the title size
223 /// </summary>
224 sizef titlesize = sizef.empty;
225 /// <summary>
226 /// the m rect working
227 /// </summary>
228 private rectanglef m_rectworking = rectangle.empty;
229 /// <summary>
230 /// the line value type size
231 /// </summary>
232 sizef linevaluetypesize = sizef.empty;
233 /// <summary>
234 /// the int line value com count
235 /// </summary>
236 int intlinevaluecomcount = 0;
237 /// <summary>
238 /// the int line value row count
239 /// </summary>
240 int intlinevaluerowcount = 0;
241 /// <summary>
242 /// initializes a new instance of the <see cref="ucradarchart"/> class.
243 /// </summary>
244 public ucradarchart()
245 {
246 this.setstyle(controlstyles.allpaintinginwmpaint, true);
247 this.setstyle(controlstyles.doublebuffer, true);
248 this.setstyle(controlstyles.resizeredraw, true);
249 this.setstyle(controlstyles.selectable, true);
250 this.setstyle(controlstyles.supportstransparentbackcolor, true);
251 this.setstyle(controlstyles.userpaint, true);
252 this.autoscalemode = system.windows.forms.autoscalemode.none;
253 this.sizechanged += ucradarchart_sizechanged;
254 size = new system.drawing.size(150, 150);
255 radarpositions = new radarposition[0];
256 if (controlhelper.isdesignmode())
257 {
258 radarpositions = new radarposition[6];
259 for (int i = 0; i < 6; i++)
260 {
261 radarpositions[i] = new radarposition
262 {
263 text = "item" + (i + 1),
264 maxvalue = 100
265 };
266 }
267 }
268
269 lines = new radarline[0];
270 if (controlhelper.isdesignmode())
271 {
272 random r = new random();
273 lines = new radarline[2];
274 for (int i = 0; i < 2; i++)
275 {
276 lines[i] = new radarline()
277 {
278 name = "line" + i
279 };
280 lines[i].values = new double[radarpositions.length];
281 for (int j = 0; j < radarpositions.length; j++)
282 {
283 lines[i].values[j] = r.next(20, (int)radarpositions[j].maxvalue);
284 }
285 }
286 }
287 }
288
289 /// <summary>
290 /// handles the sizechanged event of the ucradarchart control.
291 /// </summary>
292 /// <param name="sender">the source of the event.</param>
293 /// <param name="e">the <see cref="eventargs"/> instance containing the event data.</param>
294 void ucradarchart_sizechanged(object sender, eventargs e)
295 {
296 resetworkingrect();
297 }
298
299 /// <summary>
300 /// resets the working rect.
301 /// </summary>
302 private void resetworkingrect()
303 {
304 if (lines != null && lines.length > 0)
305 {
306 using (graphics g = this.creategraphics())
307 {
308 foreach (var item in lines)
309 {
310 var s = g.measurestring(item.name, font);
311 if (s.width > linevaluetypesize.width)
312 linevaluetypesize = s;
313 }
314 }
315 }
316 var linetypepanelheight = 0f;
317 if (linevaluetypesize != sizef.empty)
318 {
319 intlinevaluecomcount = (int)(this.width / (linevaluetypesize.width + 25));
320
321 intlinevaluerowcount = lines.length / intlinevaluecomcount;
322 if (lines.length % intlinevaluecomcount != 0)
323 {
324 intlinevaluerowcount++;
325 }
326 linetypepanelheight = (linevaluetypesize.height + 10) * intlinevaluerowcount;
327 }
328 var min = math.min(this.width, this.height - titlesize.height - linetypepanelheight);
329 var rectworking = new rectanglef((this.width - min) / 2 + 10, titlesize.height + linetypepanelheight + 10, min - 10, min - 10);
330 //处理文字
331 float fltsplitangle = 360f / radarpositions.length;
332 float fltradiuswidth = rectworking.width / 2;
333 float minx = rectworking.left;
334 float maxx = rectworking.right;
335 float miny = rectworking.top;
336 float maxy = rectworking.bottom;
337 using (graphics g = this.creategraphics())
338 {
339 pointf centrepoint = new pointf(rectworking.left + rectworking.width / 2, rectworking.top + rectworking.height / 2);
340 for (int i = 0; i < radarpositions.length; i++)
341 {
342 float fltangle = 270 + fltsplitangle * i;
343 fltangle = fltangle % 360;
344 pointf _point = getpointbyangle(centrepoint, fltangle, fltradiuswidth);
345 var _txtsize = g.measurestring(radarpositions[i].text, font);
346 if (_point.x < centrepoint.x)//左
347 {
348 if (_point.x - _txtsize.width < minx)
349 {
350 minx = rectworking.left + _txtsize.width;
351 }
352 }
353 else//右
354 {
355 if (_point.x + _txtsize.width > maxx)
356 {
357 maxx = rectworking.right - _txtsize.width;
358 }
359 }
360 if (_point.y < centrepoint.y)//上
361 {
362 if (_point.y - _txtsize.height < miny)
363 {
364 miny = rectworking.top + _txtsize.height;
365 }
366 }
367 else//下
368 {
369 if (_point.y + _txtsize.height > maxy)
370 {
371 maxy = rectworking.bottom - _txtsize.height;
372 }
373 }
374 }
375 }
376
377 min = math.min(maxx - minx, maxy - miny);
378 m_rectworking = new rectanglef(minx, miny, min, min);
379 }
380
381 /// <summary>
382 /// 引发 <see cref="e:system.windows.forms.control.paint" /> 事件。
383 /// </summary>
384 /// <param name="e">包含事件数据的 <see cref="t:system.windows.forms.painteventargs" />。</param>
385 protected override void onpaint(painteventargs e)
386 {
387 base.onpaint(e);
388 var g = e.graphics;
389 g.setgdihigh();
390
391 if (!string.isnullorempty(title))
392 {
393 g.drawstring(title, titlefont, new solidbrush(titlecolor), new rectanglef(m_rectworking.left + (m_rectworking.width - titlesize.width) / 2, m_rectworking.top - titlesize.height - 10 - (intlinevaluerowcount * (10 + linevaluetypesize.height)), titlesize.width, titlesize.height));
394 }
395
396 if (radarpositions.length <= 2)
397 {
398 g.drawstring("至少需要3个顶点", font, new solidbrush(color.black), m_rectworking, new stringformat() { alignment = stringalignment.center, linealignment = stringalignment.center });
399 return;
400 }
401
402 var y = m_rectworking.top - 20 - (intlinevaluerowcount * (10 + linevaluetypesize.height));
403
404 for (int i = 0; i < intlinevaluerowcount; i++)
405 {
406 var x = 0f;
407 int intcount = intlinevaluecomcount;
408 if (i == intlinevaluerowcount - 1)
409 {
410 intcount = lines.length % intlinevaluecomcount;
411
412 }
413 x = m_rectworking.left + (m_rectworking.width - intcount * (linevaluetypesize.width + 25)) / 2;
414
415 for (int j = 0; j < intcount; j++)
416 {
417 g.fillrectangle(new solidbrush(lines[i * intlinevaluecomcount + j].linecolor.value), new rectanglef(x + (linevaluetypesize.width + 25)*j, y + linevaluetypesize.height * i, 15, linevaluetypesize.height));
418 g.drawstring(lines[i * intlinevaluecomcount + j].name, font, new solidbrush(lines[i * intlinevaluecomcount + j].linecolor.value), new pointf(x + (linevaluetypesize.width + 25) * j + 20, y + linevaluetypesize.height * i));
419 }
420 }
421
422 float fltsplitangle = 360f / radarpositions.length;
423 float fltradiuswidth = m_rectworking.width / 2;
424 float fltsplitradiuswidth = fltradiuswidth / splitcount;
425 pointf centrepoint = new pointf(m_rectworking.left + m_rectworking.width / 2, m_rectworking.top + m_rectworking.height / 2);
426
427 list<list<pointf>> lstringpoints = new list<list<pointf>>(splitcount);
428 //分割点
429 for (int i = 0; i < radarpositions.length; i++)
430 {
431 float fltangle = 270 + fltsplitangle * i;
432 fltangle = fltangle % 360;
433 for (int j = 0; j < splitcount; j++)
434 {
435 if (i == 0)
436 {
437 lstringpoints.add(new list<pointf>());
438 }
439 pointf _point = getpointbyangle(centrepoint, fltangle, fltsplitradiuswidth * (splitcount - j));
440 lstringpoints[j].add(_point);
441 }
442 }
443
444 for (int i = 0; i < lstringpoints.count; i++)
445 {
446 var ring = lstringpoints[i];
447 graphicspath path = new graphicspath();
448 path.addlines(ring.toarray());
449 if ((lstringpoints.count - i) % 2 == 0)
450 {
451 g.fillpath(new solidbrush(splitevencolor), path);
452 }
453 else
454 {
455 g.fillpath(new solidbrush(splitoddcolor), path);
456 }
457 }
458
459 //画环
460 foreach (var ring in lstringpoints)
461 {
462 ring.add(ring[0]);
463 g.drawlines(new pen(new solidbrush(linecolor)), ring.toarray());
464 }
465 //分割线
466 foreach (var item in lstringpoints[0])
467 {
468 g.drawline(new pen(new solidbrush(linecolor)), centrepoint, item);
469 }
470
471 //值
472 for (int i = 0; i < lines.length; i++)
473 {
474 var line = lines[i];
475 if (line.values.length != radarpositions.length)//如果数据长度和节点长度不一致则不绘制
476 continue;
477 if (line.linecolor == null || line.linecolor == color.empty || line.linecolor == color.transparent)
478 line.linecolor = controlhelper.colors[i + 13];
479 list<pointf> ps = new list<pointf>();
480 for (int j = 0; j < radarpositions.length; j++)
481 {
482 float fltangle = 270 + fltsplitangle * j;
483 fltangle = fltangle % 360;
484 pointf _point = getpointbyangle(centrepoint, fltangle, fltradiuswidth * (float)(line.values[j] / radarpositions[i].maxvalue));
485 ps.add(_point);
486 }
487 ps.add(ps[0]);
488 if (line.fillcolor != null && line.fillcolor != color.empty && line.fillcolor != color.transparent)
489 {
490 graphicspath path = new graphicspath();
491 path.addlines(ps.toarray());
492 g.fillpath(new solidbrush(line.fillcolor.value), path);
493 }
494 g.drawlines(new pen(new solidbrush(line.linecolor.value), 2), ps.toarray());
495
496 for (int j = 0; j < radarpositions.length; j++)
497 {
498 var item = ps[j];
499 g.fillellipse(new solidbrush(color.white), new rectanglef(item.x - 3, item.y - 3, 6, 6));
500 g.drawellipse(new pen(new solidbrush(line.linecolor.value)), new rectanglef(item.x - 3, item.y - 3, 6, 6));
501 if (line.showvaluetext)
502 {
503 var valuesize = g.measurestring(line.values[j].tostring("0.##"), font);
504 g.drawstring(line.values[j].tostring("0.##"), font, new solidbrush(line.linecolor.value), new pointf(item.x - valuesize.width / 2, item.y - valuesize.height - 5));
505 }
506 }
507 }
508
509 //文本
510
511 for (int i = 0; i < radarpositions.length; i++)
512 {
513 pointf point = lstringpoints[0][i];
514 var txtsize = g.measurestring(radarpositions[i].text, font);
515
516 if (point.x == centrepoint.x)
517 {
518 if (point.y > centrepoint.y)
519 {
520 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - txtsize.width / 2, point.y + 10));
521 }
522 else
523 {
524 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - txtsize.width / 2, point.y - 10 - txtsize.height));
525 }
526 }
527 else if (point.y == centrepoint.y)
528 {
529 if (point.x < centrepoint.x)
530 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - 10 - txtsize.width, point.y - txtsize.height / 2));
531 else
532 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x + 10, point.y - txtsize.height / 2));
533 }
534 else if (point.x < centrepoint.x)//左
535 {
536 if (point.y < centrepoint.y)//左上
537 {
538 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - 10 - txtsize.width, point.y - 10 + txtsize.height / 2));
539 }
540 else//左下
541 {
542 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x - 10 - txtsize.width, point.y + 10 - txtsize.height / 2));
543 }
544 }
545 else
546 {
547 if (point.y < centrepoint.y)//右上
548 {
549 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x + 10, point.y - 10 + txtsize.height / 2));
550 }
551 else//右下
552 {
553 g.drawstring(radarpositions[i].text, font, new solidbrush(forecolor), new pointf(point.x + 10, point.y + 10 - txtsize.height / 2));
554 }
555 }
556 }
557
558 }
559
560 #region 根据中心点、角度、半径计算圆边坐标点 english:calculating the coordinate points of circular edge according to the center point, angle and radius
561 /// <summary>
562 /// 功能描述:根据中心点、角度、半径计算圆边坐标点 english:calculating the coordinate points of circular edge according to the center point, angle and radius
563 /// 作 者:hzh
564 /// 创建日期:2019-09-25 09:46:32
565 /// 任务编号:pos
566 /// </summary>
567 /// <param name="centrepoint">centrepoint</param>
568 /// <param name="fltangle">fltangle</param>
569 /// <param name="fltradiuswidth">fltradiuswidth</param>
570 /// <returns>返回值</returns>
571 private pointf getpointbyangle(pointf centrepoint, float fltangle, float fltradiuswidth)
572 {
573 pointf p = centrepoint;
574 if (fltangle == 0)
575 {
576 p.x += fltradiuswidth;
577 }
578 else if (fltangle == 90)
579 {
580 p.y += fltradiuswidth;
581 }
582 else if (fltangle == 180)
583 {
584 p.x -= fltradiuswidth;
585 }
586 else if (fltangle == 270)
587 {
588 p.y -= fltradiuswidth;
589 }
590 else if (fltangle > 0 && fltangle < 90)
591 {
592 p.y += (float)math.sin(math.pi * (fltangle / 180.00f)) * fltradiuswidth;
593 p.x += (float)math.cos(math.pi * (fltangle / 180.00f)) * fltradiuswidth;
594 }
595 else if (fltangle > 90 && fltangle < 180)
596 {
597 p.y += (float)math.sin(math.pi * ((180 - fltangle) / 180.00f)) * fltradiuswidth;
598 p.x -= (float)math.cos(math.pi * ((180 - fltangle) / 180.00f)) * fltradiuswidth;
599 }
600 else if (fltangle > 180 && fltangle < 270)
601 {
602 p.y -= (float)math.sin(math.pi * ((fltangle - 180) / 180.00f)) * fltradiuswidth;
603 p.x -= (float)math.cos(math.pi * ((fltangle - 180) / 180.00f)) * fltradiuswidth;
604 }
605 else if (fltangle > 270 && fltangle < 360)
606 {
607 p.y -= (float)math.sin(math.pi * ((360 - fltangle) / 180.00f)) * fltradiuswidth;
608 p.x += (float)math.cos(math.pi * ((360 - fltangle) / 180.00f)) * fltradiuswidth;
609 }
610 return p;
611 }
612 #endregion
613
614 /// <summary>
615 /// resets the size of the title.
616 /// </summary>
617 private void resettitlesize()
618 {
619 if (!string.isnullorempty(title))
620 {
621 using (graphics g = this.creategraphics())
622 {
623 titlesize = g.measurestring(title, titlefont);
624 }
625 }
626 else
627 {
628 titlesize = sizef.empty;
629 }
630 titlesize.height += 20;
631 resetworkingrect();
632 }
633 }
634 }
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