using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;

namespace ICSharpCode.WinFormsUI
{
 internal partial class OwnerButton : UserControl
 {
 private bool mouseon = false;

 private bool _onFocus;
 public bool OnFocus
 {
 get { return _onFocus; }
 set
 {
 _onFocus = value;
 this.Invalidate();
 }
 }

 private string _text;
 public new string Text
 {
 get { return _text; }
 set
 {
 _text = value;
 this.Invalidate();
 }
 }

 private int _radius = 0;
 public int Radius
 {
 get { return _radius; }
 set { _radius = value; }
 }

 private bool _useVisualStyleBackColor = false;
 public bool UseVisualStyleBackColor
 {
 get { return _useVisualStyleBackColor; }
 set { _useVisualStyleBackColor = value; }
 }

 private Color _borderColor = SystemColors.ControlDark;
 public Color BorderColor
 {
 get { return _borderColor; }
 set { _borderColor = value; }
 }

 public OwnerButton()
 {
 InitializeComponent();
 }

 protected override void OnPaint(PaintEventArgs e)
 {
 base.OnPaint(e);
 DrawRender(e.Graphics);
 }

 protected override void OnMouseEnter(EventArgs e)
 {
 base.OnMouseEnter(e);
 mouseon = true;
 this.Invalidate();
 }

 protected override void OnMouseLeave(EventArgs e)
 {
 base.OnMouseLeave(e);
 mouseon = false;
 this.Invalidate();
 }

 protected override void OnGotFocus(EventArgs e)
 {
 base.OnGotFocus(e);
 this.OnFocus = true;
 }

 protected override void OnLostFocus(EventArgs e)
 {
 base.OnLostFocus(e);
 this.OnFocus = false;
 }

 private GraphicsPath GetRoundedRectPath(Rectangle rect, int radius)
 {
 GraphicsPath roundedRect = new GraphicsPath();
 roundedRect.AddArc(rect.X, rect.Y, radius * 2, radius * 2, 180, 90);
 roundedRect.AddLine(rect.X + radius, rect.Y, rect.Right - radius * 2, rect.Y);
 roundedRect.AddArc(rect.X + rect.Width - radius * 2, rect.Y, radius * 2, radius * 2, 270, 90);
 roundedRect.AddLine(rect.Right, rect.Y + radius * 2, rect.Right, rect.Y + rect.Height - radius * 2);
 roundedRect.AddArc(rect.X + rect.Width - radius * 2, rect.Y + rect.Height - radius * 2, radius * 2, radius * 2, 0, 90);
 roundedRect.AddLine(rect.Right - radius * 2, rect.Bottom, rect.X + radius * 2, rect.Bottom);
 roundedRect.AddArc(rect.X, rect.Bottom - radius * 2, radius * 2, radius * 2, 90, 90);
 roundedRect.AddLine(rect.X, rect.Bottom - radius * 2, rect.X, rect.Y + radius * 2);
 roundedRect.CloseFigure();
 return roundedRect;
 }

 protected void DrawRender(Graphics graphic)
 {
 Rectangle clientRection = new Rectangle();
 clientRection.X = 1;
 clientRection.Y = 1;
 clientRection.Width = this.ClientSize.Width - 3;
 clientRection.Height = this.ClientSize.Height - 3;

 Color backgroundColor = SystemColors.ControlLight;
 if (mouseon)
 backgroundColor = Color.FromArgb(255, 229, 241, 251);
 if (_onFocus)
 backgroundColor = Color.FromArgb(255, 229, 241, 251);

 if (this.Radius > 0)
 {
 using (GraphicsPath graphicPath = GetRoundedRectPath(clientRection, this._radius))
 {
 graphic.FillPath(new SolidBrush(backgroundColor), graphicPath);
 }
 }
 else
 {
 graphic.FillRectangle(new SolidBrush(backgroundColor), clientRection);
 }

 if (!string.IsNullOrEmpty(this.Text))
 {
 graphic.DrawString(this.Text, this.Font, new SolidBrush(this.ForeColor), this.ClientRectangle, new StringFormat() { Alignment = StringAlignment.Center, LineAlignment = StringAlignment.Center });
 }

 if (this.Radius > 0)
 {
 using (GraphicsPath graphicPath = GetRoundedRectPath(clientRection, this._radius))
 {
 graphic.DrawPath(new Pen(_borderColor, 1.0f), graphicPath);
 }
 }
 else
 {
 ControlPaint.DrawBorder(graphic, clientRection,
 _borderColor, 1, ButtonBorderStyle.Solid, //左边
 _borderColor, 1, ButtonBorderStyle.Solid, //上边
 _borderColor, 1, ButtonBorderStyle.Solid, //右边
 _borderColor, 1, ButtonBorderStyle.Solid);//底边
 }

 }

 }
}