using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace ButcherFactory.Controls
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{
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public class RoundPanel : Panel
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{
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public RoundPanel()
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{
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this.Padding = new System.Windows.Forms.Padding(0, 0, 0, 0);
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this.Margin = new System.Windows.Forms.Padding(0, 0, 0, 0);
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}
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// 圆角
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// ===============================================================================================
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private int _Radius = 18; // 圆角弧度
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/// <summary>圆角弧度(0为不要圆角)</summary>
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[DefaultValue(18)]
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[Browsable(true)]
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[Description("圆角弧度(0为不要圆角)")]
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public int _setRoundRadius
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{
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get
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{
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return _Radius;
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}
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set
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{
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if (value < 0) { _Radius = 0; }
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else { _Radius = value; }
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base.Refresh();
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}
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}
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// 圆角代码
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public void Round(System.Drawing.Region region)
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{
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System.Drawing.Drawing2D.GraphicsPath oPath = new System.Drawing.Drawing2D.GraphicsPath();
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int x = 0;
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int y = 0;
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int thisWidth = this.Width;
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int thisHeight = this.Height;
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int angle = _Radius;
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oPath.AddArc(x, y, angle, angle, 180, 90); // 左上角
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oPath.AddArc(thisWidth - angle, y, angle, angle, 270, 90); // 右上角
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oPath.AddArc(thisWidth - angle, thisHeight - angle, angle, angle, 0, 90); // 右下角
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oPath.AddArc(x, thisHeight - angle, angle, angle, 90, 90); // 左下角
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oPath.CloseAllFigures();
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Region = new System.Drawing.Region(oPath);
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}
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public RoundPanel(IContainer container)
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{
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container.Add(this);
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}
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protected override void OnPaint(System.Windows.Forms.PaintEventArgs pe)
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{
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base.OnPaint(pe);
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pe.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
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Round(this.Region); // 圆角
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}
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protected override void OnResize(EventArgs eventargs)
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{
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base.OnResize(eventargs);
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base.Refresh();
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}
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}
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}
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