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| using System.Drawing;
| using System.Drawing.Drawing2D;
|
| namespace WinCustControls
| {
| public class PaintClass
| {
| /// <summary>
| /// 获取圆角矩形的路径
| /// </summary>
| /// <param name="rect"></param>
| /// <param name="r"></param>
| /// <returns></returns>
| public static GraphicsPath GetRoundRectangle(Rectangle rect, int r)
| {
| GraphicsPath gp = new GraphicsPath();
| int l = 2 * r;//圆弧所在矩形的边长
| //上边线段
| gp.AddLine(rect.X + r, rect.Y, rect.Right - r, rect.Y);
| //右上角1/4圆弧 270 90
| gp.AddArc(rect.Right - l, rect.Y, l, l, 270F, 90F);
| //右边竖线
| gp.AddLine(rect.Right, rect.Y + r, rect.Right, rect.Bottom - r);
| //右下角1/4圆弧 0 90
| gp.AddArc(rect.Right - l, rect.Bottom - l, l, l, 0F, 90F);
| //下边线段
| gp.AddLine(rect.Right - r, rect.Bottom, rect.X + r, rect.Bottom);
| //左下角1/4圆弧 90 90
| gp.AddArc(rect.X, rect.Bottom - l, l, l, 90F, 90F);
| //左边竖线
| gp.AddLine(rect.X, rect.Bottom - r, rect.X, rect.Y + r);
| //左上角1/4圆弧 180 90
| gp.AddArc(rect.X, rect.Y, l, l, 180F, 90F);
| return gp;
| }
| }
| }
|
|
