2.C#Panel扩展控件

  1 using System;
  2 using System.Collections.Generic;
  3 using System.ComponentModel;
  4 using System.Diagnostics;
  5 
  6 using System.Linq;
  7 using System.Security.Principal;
  8 using System.Text;
  9 using System.Windows.Forms;
 10 using System.Drawing.Drawing2D;
 11 using System.Drawing.Text;
 12 using System.Drawing;
 13 namespace FJZControl
 14 {
 15     public partial class FJZPanel : Panel
 16     {
 17         public FJZPanel()
 18         {
 19             InitializeComponent();
 20         }
 21 
 22         public FJZPanel(IContainer container)
 23         {
 24             container.Add(this);
 25 
 26             InitializeComponent();
 27         }
 28         #region 属性
 29         private Color headBackColor = Color.LimeGreen;
 30         [Category("我的自定义Panel控件属性")]
 31         [Description("标题的背景颜色")]
 32         public Color HeadBackColor
 33         {
 34             get
 35             {
 36                 return headBackColor;
 37             }
 38 
 39             set
 40             {
 41                 headBackColor = value;
 42 
 43                 this.Invalidate();
 44             }
 45         }
 46 
 47         private Color headForeColor = Color.Black;
 48         [Category("我的自定义Panel控件属性")]
 49         [Description("标题的背景颜色")]
 50         public Color HeadForeColor
 51         {
 52             get
 53             {
 54                 return headForeColor;
 55             }
 56 
 57             set
 58             {
 59                 headForeColor = value;
 60 
 61                 this.Invalidate();
 62             }
 63         }
 64 
 65 
 66         private int headHeight = 30;
 67         [Category("我的自定义Panel控件属性")]
 68         [Description("标题的高度")]
 69         public int HeadHeight
 70         {
 71             get
 72             {
 73                 return headHeight;
 74             }
 75 
 76             set
 77             {
 78                 headHeight = value;
 79                 this.Invalidate();
 80             }
 81         }
 82 
 83         private string headText = "标题名称";
 84         [Category("我的自定义Panel控件属性")]
 85         [Description("标题的名称")]
 86         public string HeadText
 87         {
 88             get { return headText; }
 89             set
 90             {
 91                 this.headText = value;
 92                 this.Invalidate();
 93             }
 94             
 95         }
 96 
 97 
 98 
 99         private float linearScale=0.4f;
100         [Category("我的自定义Panel控件属性")]
101         [Description("渐变程度")]
102         public float LinearScale
103         {
104             get
105             {
106                 return linearScale;
107             }
108 
109             set
110             {
111                 linearScale = value;
112                 this.Invalidate();
113             }
114         }
115         #endregion
116 
117         #region 字段
118         Graphics g;
119         Pen p;
120         SolidBrush sb;
121         #endregion
122         #region 方法
123         protected override void OnPaint(PaintEventArgs e)
124         {
125             base.OnPaint(e);
126             //自定义绘制过程
127 
128             //获取这个画布
129              g = e.Graphics;
130 
131             //设置画布
132             SetGrahics();
133 
134             //第一步:画标题框
135             using (LinearGradientBrush brush = new LinearGradientBrush(new PointF(0, 0), new PointF(0, this.headHeight), GetStartLinearColor(this.headBackColor), this.headBackColor))
136             {
137                 g.FillRectangle(brush, new RectangleF(0, 0, this.Width, this.headHeight));
138             }
139             //第二步:标题
140             StringFormat sf = new StringFormat();
141             sf.Alignment = StringAlignment.Center;
142             sf.LineAlignment = StringAlignment.Center;
143             using(SolidBrush sb=new SolidBrush(this.headForeColor))
144             {
145                 g.DrawString(this.headText, this.Font, sb,new RectangleF( 0,0,this.Width, this.headHeight), sf);
146             }
147             //第三步:画边框
148             using(Pen p=new Pen(this.headBackColor))
149             {
150                 g.DrawRectangle(p, 0, 0, this.Width-1, this.Height-1);
151                 g.DrawLine(p, 0, this.HeadHeight, this.Width - 1, this.headHeight - 1);
152             }
153         }
154         //设置画布属性
155         private void SetGrahics()
156         {
157             g.SmoothingMode = SmoothingMode.AntiAlias;
158             g.SmoothingMode = SmoothingMode.HighQuality;
159 
160             g.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
161             g.TextRenderingHint = TextRenderingHint.AntiAlias;
162 
163         }
164 
165         //获取
166         private Color GetStartLinearColor(Color EndLinearColor)
167         {
168             return Color.FromArgb((int)(EndLinearColor.R + (255 - EndLinearColor.R) * this.linearScale), (int)(EndLinearColor.G + (255 - EndLinearColor.G) * this.linearScale), (int)(EndLinearColor.B + (255 - EndLinearColor.B) * this.linearScale));
169         }
170         #endregion
171     }
172 }