using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.ComponentModel;
namespace IOM_cs
{
public partial class RoundPanel : Panel
{
private int mMatrixRound = 8;
private Color mBack;
public Color Back
{
get { return mBack; }
set
{
if (value == null)
{
mBack = Control.DefaultBackColor;
}
else
{
mBack = value;
}
base.Refresh();
}
}
public int MatrixRound
{
get { return mMatrixRound; }
set
{
mMatrixRound = value;
base.Refresh();
}
}
private GraphicsPath CreateRound(Rectangle rect, int radius)
{
GraphicsPath roundRect = new GraphicsPath();
//顶端
roundRect.AddLine(rect.Left + radius - 1, rect.Top - 1, rect.Right - radius, rect.Top - 1);
//右上角
roundRect.AddArc(rect.Right - radius, rect.Top - 1, radius, radius, 270, 90);
//右边
roundRect.AddLine(rect.Right, rect.Top + radius, rect.Right, rect.Bottom - radius);
//右下角
roundRect.AddArc(rect.Right - radius, rect.Bottom - radius, radius, radius, 0, 90);
//底边
roundRect.AddLine(rect.Right - radius, rect.Bottom, rect.Left + radius, rect.Bottom);
//左下角
roundRect.AddArc(rect.Left - 1, rect.Bottom - radius, radius, radius, 90, 90);
//左边
roundRect.AddLine(rect.Left - 1, rect.Top + radius, rect.Left - 1, rect.Bottom - radius);
//左上角
roundRect.AddArc(rect.Left - 1, rect.Top - 1, radius, radius, 180, 90);
return roundRect;
}
protected override void OnPaint(PaintEventArgs e)
{
int width = base.Width - base.Margin.Left - base.Margin.Right;
int height = base.Height - base.Margin.Top - base.Margin.Bottom;
Rectangle rec = new Rectangle(base.Margin.Left, base.Margin.Top, width, height);
GraphicsPath round = CreateRound(rec, mMatrixRound);
e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
e.Graphics.FillPath((Brush)(new SolidBrush(mBack)), round);
}
protected override void OnResize(EventArgs eventargs)
{
base.Refresh();
}
private void InitializeComponent()
{
this.SuspendLayout();
this.ResumeLayout(false);
}
//private Color _borderColor = Color.FromArgb(23, 169, 254);
//private int _radius = 10;
//private RoundStyle _roundeStyle;
//private const int WM_PAINT = 0xF;
//public RoundPanel() : base()
//{
//}
///// <summary>
///// 建立圆角路径的样式。
///// </summary>
//public enum RoundStyle
//{
// /// <summary>
// /// 四个角都不是圆角。
// /// </summary>
// None = 0,
// /// <summary>
// /// 四个角都为圆角。
// /// </summary>
// All = 1,
// /// <summary>
// /// 左边两个角为圆角。
// /// </summary>
// Left = 2,
// /// <summary>
// /// 右边两个角为圆角。
// /// </summary>
// Right = 3,
// /// <summary>
// /// 上边两个角为圆角。
// /// </summary>
// Top = 4,
// /// <summary>
// /// 下边两个角为圆角。
// /// </summary>
// Bottom = 5,
//}
///// <summary>
///// 建立带有圆角样式的路径。
///// </summary>
///// <param name="rect">用来建立路径的矩形。</param>
///// <param name="_radius">圆角的大小。</param>
///// <param name="style">圆角的样式。</param>
///// <param name="correction">是否把矩形长宽减 1,以便画出边框。</param>
///// <returns>建立的路径。</returns>
//GraphicsPath CreatePath(Rectangle rect, int radius, RoundStyle style, bool correction)
//{
// GraphicsPath path = new GraphicsPath();
// int radiusCorrection = correction ? 1 : 0;
// switch (style)
// {
// case RoundStyle.None:
// path.AddRectangle(rect);
// break;
// case RoundStyle.All:
// path.AddArc(rect.X, rect.Y, radius, radius, 180, 90);
// path.AddArc(rect.Right - radius - radiusCorrection, rect.Y, radius, radius, 270, 90);
// path.AddArc(rect.Right - radius - radiusCorrection, rect.Bottom - radius - radiusCorrection, radius, radius, 0, 90);
// path.AddArc(rect.X, rect.Bottom - radius - radiusCorrection, radius, radius, 90, 90);
// break;
// case RoundStyle.Left:
// path.AddArc(rect.X, rect.Y, radius, radius, 180, 90);
// path.AddLine(rect.Right - radiusCorrection, rect.Y, rect.Right - radiusCorrection, rect.Bottom - radiusCorrection);
// path.AddArc(rect.X, rect.Bottom - radius - radiusCorrection, radius, radius, 90, 90);
// break;
// case RoundStyle.Right:
// path.AddArc(rect.Right - radius - radiusCorrection, rect.Y, radius, radius, 270, 90);
// path.AddArc(rect.Right - radius - radiusCorrection, rect.Bottom - radius - radiusCorrection, radius, radius, 0, 90);
// path.AddLine(rect.X, rect.Bottom - radiusCorrection, rect.X, rect.Y);
// break;
// case RoundStyle.Top:
// path.AddArc(rect.X, rect.Y, radius, radius, 180, 90);
// path.AddArc(rect.Right - radius - radiusCorrection, rect.Y, radius, radius, 270, 90);
// path.AddLine(rect.Right - radiusCorrection, rect.Bottom - radiusCorrection, rect.X, rect.Bottom - radiusCorrection);
// break;
// case RoundStyle.Bottom:
// path.AddArc(rect.Right - radius - radiusCorrection, rect.Bottom - radius - radiusCorrection, radius, radius, 0, 90);
// path.AddArc(rect.X, rect.Bottom - radius - radiusCorrection, radius, radius, 90, 90);
// path.AddLine(rect.X, rect.Y, rect.Right - radiusCorrection, rect.Y);
// break;
// }
// path.CloseFigure(); //这句很关键，缺少会没有左边线。
// return path;
//}
//[DefaultValue(typeof(Color), "23, 169, 254"), Description("控件边框颜色")]
//public Color BorderColor
//{
// get { return _borderColor; }
// set
// {
// _borderColor = value;
// base.Invalidate();
// }
//}
//[DefaultValue(typeof(int), "5"), Description("圆角弧度大小")]
//public int Radius
//{
// get { return _radius; }
// set
// {
// _radius = value;
// base.Invalidate();
// }
//}
//public RoundStyle RoundeStyle
//{
// get { return _roundeStyle; }
// set
// {
// _roundeStyle = value;
// base.Invalidate();
// }
//}
//protected override void WndProc(ref Message m)
//{
// try
// {
// base.WndProc(ref m);
// if (m.Msg == WM_PAINT)
// {
// if (this.Radius > 0)
// {
// using (Graphics g = Graphics.FromHwnd(this.Handle))
// {
// Rectangle r = new Rectangle();
// r.Width = this.Width;
// r.Height = this.Height;
// DrawBorder(g, r, this.RoundeStyle, this.Radius);
// }
// }
// }
// }
// catch(Exception ex)
// {
// MessageBox.Show(ex.Message);
// }
//}
//private void DrawBorder(Graphics g, Rectangle rect, RoundStyle roundStyle, int radius)
//{
// rect.Width -= 1;
// rect.Height -= 1;
// using (GraphicsPath path = CreatePath(rect, radius, roundStyle, false))
// {
// using (Pen pen = new Pen(this.BorderColor))
// {
// g.DrawPath(pen, path);
// }
// }
//}
}
}
