using System;
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using System.Drawing;
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using System.Drawing.Drawing2D;
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namespace Microsoft.Windows.Forms
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{
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public static partial class RenderEngine
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{
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/// <summary>
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/// 创建路径。
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/// </summary>
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/// <param name="rect">矩形。</param>
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/// <returns>创建的路径。</returns>
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public static GraphicsPath CreateGraphicsPath(Rectangle rect)
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{
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return CreateGraphicsPath(rect.X, rect.Y, rect.Width, rect.Height);
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}
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/// <summary>
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/// 创建路径。
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/// </summary>
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/// <param name="pt">左上角。</param>
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/// <param name="sz">大小</param>
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/// <returns>创建的路径。</returns>
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public static GraphicsPath CreateGraphicsPath(Point pt, Size sz)
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{
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return CreateGraphicsPath(pt.X, pt.Y, sz.Width, sz.Height);
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}
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/// <summary>
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/// 创建路径。
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/// </summary>
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/// <param name="x">左上角水平坐标。</param>
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/// <param name="y">左上角垂直坐标</param>
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/// <param name="width">宽度。</param>
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/// <param name="height">高度。</param>
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/// <returns>创建的路劲。</returns>
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public static GraphicsPath CreateGraphicsPath(int x, int y, int width, int height)
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{
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Point[] points = new Point[4];
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points[0] = new Point(x, y);
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points[1] = new Point(x + width, y);
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points[2] = new Point(x + width, y + height);
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points[3] = new Point(x, y + height);
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GraphicsPath shape = new GraphicsPath();
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shape.AddPolygon(points);
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return shape;
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}
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/// <summary>
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/// 创建路径。
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/// </summary>
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/// <param name="rect">用来创建路径的矩形。</param>
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/// <param name="cornerStyle">圆角弯曲样式。</param>
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/// <param name="roundStyle">圆角的样式。</param>
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/// <param name="radius">圆角半径。</param>
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/// <param name="correct">是否把矩形长宽减 1,以便画出边框。</param>
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/// <returns>创建的路径。</returns>
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public static GraphicsPath CreateGraphicsPath(Rectangle rect, CornerStyle cornerStyle, RoundStyle roundStyle, float radius, bool correct)
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{
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//-----------------校准-----------------
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if (correct)
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{
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rect.Width--;
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rect.Height--;
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}
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//-----------------定义返回值-----------------
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GraphicsPath path = new GraphicsPath();
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//-----------------特殊情况处理-----------------
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if (float.IsNaN(radius) || radius <= 0f)
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{
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path.AddRectangle(rect);
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return path;
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}
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//-----------------临时变量定义-----------------
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float diameter = radius * 2;//直径
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float halfWidth = rect.Width / 2f;//宽度一半
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float halfHeight = rect.Height / 2f;//高度一半
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PointF ptMiddleCenter = new PointF(rect.X + halfWidth, rect.Y + halfHeight);//中心点
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float lrDegrees = 0f;//半径大于半高,圆心角
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float lrOffset = 0f;//半径大于半高,圆弧到边距离
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if ((roundStyle & RoundStyle.All) != 0 && radius > halfHeight)
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{
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double lrRadian = Math.Acos((radius - halfHeight) / radius);//弧度
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lrDegrees = (float)MathEx.ToDegrees(lrRadian);//角度
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lrOffset = (float)(radius * Math.Sin(lrRadian));
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}
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float tbDegrees = 0f;//半径大于半宽,圆心角
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float tbOffset = 0f;//半径大于办宽,圆弧到边距离
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if ((roundStyle & RoundStyle.All) != 0 && radius > halfWidth)
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{
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double tbRadian = Math.Acos((radius - halfWidth) / radius);//弧度
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tbDegrees = (float)MathEx.ToDegrees(tbRadian);//角度
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tbOffset = (float)(radius * Math.Sin(tbRadian));
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}
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//临时变量
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PointF ptBegin;
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PointF ptEnd;
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#region 左上
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if ((roundStyle & RoundStyle.TopLeft) == 0)//直角
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{
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if ((cornerStyle & CornerStyle.LeftIn) != 0)
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{
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ptBegin = new PointF(rect.X + radius, ptMiddleCenter.Y);
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ptEnd = new PointF(rect.X, rect.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.LeftOut) != 0)
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{
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ptBegin = new PointF(rect.X, ptMiddleCenter.Y);
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ptEnd = new PointF(rect.X + radius, rect.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.TopIn) != 0)
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{
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ptBegin = new PointF(rect.X, rect.Y);
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ptEnd = new PointF(ptMiddleCenter.X, rect.Y + radius);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.TopOut) != 0)
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{
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ptBegin = new PointF(rect.X, rect.Y + radius);
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ptEnd = new PointF(ptMiddleCenter.X, rect.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else
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{
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ptBegin = ptEnd = new PointF(rect.X, rect.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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}
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else//圆角
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{
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if ((cornerStyle & CornerStyle.LeftIn) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.X - radius, rect.Y, diameter, diameter, 270 + lrDegrees, -lrDegrees);
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else
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path.AddArc(rect.X - radius, rect.Y, diameter, diameter, 0, -90);
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}
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else if ((cornerStyle & CornerStyle.LeftOut) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.X - (radius - lrOffset), rect.Y, diameter, diameter, 270 - lrDegrees, lrDegrees);
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else
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path.AddArc(rect.X, rect.Y, diameter, diameter, 180, 90);
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}
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else if ((cornerStyle & CornerStyle.TopIn) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.X, rect.Y - radius, diameter, diameter, 180, -tbDegrees);
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else
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path.AddArc(rect.X, rect.Y - radius, diameter, diameter, 180, -90);
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}
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else if ((cornerStyle & CornerStyle.TopOut) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.X, rect.Y - (radius - tbOffset), diameter, diameter, 180, tbDegrees);
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else
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path.AddArc(rect.X, rect.Y, diameter, diameter, 180, 90);
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}
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else
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{
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path.AddArc(rect.X, rect.Y, diameter, diameter, 180, 90);
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}
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}
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#endregion
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#region 右上
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if ((roundStyle & RoundStyle.TopRight) == 0)
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{
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if ((cornerStyle & CornerStyle.RightIn) != 0)
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{
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ptBegin = new PointF(rect.Right, rect.Y);
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ptEnd = new PointF(rect.Right - radius, ptMiddleCenter.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.RightOut) != 0)
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{
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ptBegin = new PointF(rect.Right - radius, rect.Y);
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ptEnd = new PointF(rect.Right, ptMiddleCenter.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.TopIn) != 0)
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{
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ptBegin = new PointF(ptMiddleCenter.X, rect.Y + radius);
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ptEnd = new PointF(rect.Right, rect.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.TopOut) != 0)
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{
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ptBegin = new PointF(ptMiddleCenter.X, rect.Y);
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ptEnd = new PointF(rect.Right, rect.Y + radius);
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path.AddLine(ptBegin, ptEnd);
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}
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else//矩形
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{
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ptBegin = ptEnd = new PointF(rect.Right, rect.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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}
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else
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{
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if ((cornerStyle & CornerStyle.RightIn) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.Right - radius, rect.Y, diameter, diameter, 270, -lrDegrees);
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else
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path.AddArc(rect.Right - radius, rect.Y, diameter, diameter, 270, -90);
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}
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else if ((cornerStyle & CornerStyle.RightOut) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.Right - radius - lrOffset, rect.Y, diameter, diameter, 270, lrDegrees);
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else
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path.AddArc(rect.Right - diameter, rect.Y, diameter, diameter, 270, 90);
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}
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else if ((cornerStyle & CornerStyle.TopIn) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.Right - diameter, rect.Y - radius, diameter, diameter, tbDegrees, -tbDegrees);
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else
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path.AddArc(rect.Right - diameter, rect.Y - radius, diameter, diameter, 90, -90);
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}
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else if ((cornerStyle & CornerStyle.TopOut) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.Right - diameter, rect.Y - (radius - tbOffset), diameter, diameter, 360 - tbDegrees, tbDegrees);
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else
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path.AddArc(rect.Right - diameter, rect.Y, diameter, diameter, 270, 90);
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}
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else
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{
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path.AddArc(rect.Right - diameter, rect.Y, diameter, diameter, 270, 90);
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}
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}
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#endregion
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#region 右下
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if ((roundStyle & RoundStyle.BottomRight) == 0)
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{
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if ((cornerStyle & CornerStyle.RightIn) != 0)
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{
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ptBegin = new PointF(rect.Right - radius, ptMiddleCenter.Y);
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ptEnd = new PointF(rect.Right, rect.Bottom);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.RightOut) != 0)
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{
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ptBegin = new PointF(rect.Right, ptMiddleCenter.Y);
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ptEnd = new PointF(rect.Right - radius, rect.Bottom);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.BottomIn) != 0)
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{
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ptBegin = new PointF(rect.Right, rect.Bottom);
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ptEnd = new PointF(ptMiddleCenter.X, rect.Bottom - radius);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.BottomOut) != 0)
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{
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ptBegin = new PointF(rect.Right, rect.Bottom - radius);
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ptEnd = new PointF(ptMiddleCenter.X, rect.Bottom);
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path.AddLine(ptBegin, ptEnd);
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}
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else//矩形
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{
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ptBegin = ptEnd = new PointF(rect.Right, rect.Bottom);
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path.AddLine(ptBegin, ptEnd);
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}
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}
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else
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{
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if ((cornerStyle & CornerStyle.RightIn) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.Right - radius, rect.Bottom - diameter, diameter, diameter, 90 + lrDegrees, -lrDegrees);
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else
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path.AddArc(rect.Right - radius, rect.Bottom - diameter, diameter, diameter, 180, -90);
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}
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else if ((cornerStyle & CornerStyle.RightOut) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.Right - radius - lrOffset, rect.Bottom - diameter, diameter, diameter, 90 - lrDegrees, lrDegrees);
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else
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path.AddArc(rect.Right - diameter, rect.Bottom - diameter, diameter, diameter, 0, 90);
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}
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else if ((cornerStyle & CornerStyle.BottomIn) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.Right - diameter, rect.Bottom - radius, diameter, diameter, 0, -tbDegrees);
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else
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path.AddArc(rect.Right - diameter, rect.Bottom - radius, diameter, diameter, 0, -90);
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}
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else if ((cornerStyle & CornerStyle.BottomOut) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.Right - diameter, rect.Bottom - radius - tbOffset, diameter, diameter, 0, tbDegrees);
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else
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path.AddArc(rect.Right - diameter, rect.Bottom - diameter, diameter, diameter, 0, 90);
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}
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else
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{
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path.AddArc(rect.Right - diameter, rect.Bottom - diameter, diameter, diameter, 0, 90);
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}
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}
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#endregion
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#region 左下
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if ((roundStyle & RoundStyle.BottomLeft) == 0)
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{
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if ((cornerStyle & CornerStyle.LeftIn) != 0)
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{
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ptBegin = new PointF(rect.X, rect.Bottom);
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ptEnd = new PointF(rect.X + radius, ptMiddleCenter.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.LeftOut) != 0)
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{
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ptBegin = new PointF(rect.X + radius, rect.Bottom);
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ptEnd = new PointF(rect.X, ptMiddleCenter.Y);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.BottomIn) != 0)
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{
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ptBegin = new PointF(ptMiddleCenter.X, rect.Bottom - radius);
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ptEnd = new PointF(rect.X, rect.Bottom);
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path.AddLine(ptBegin, ptEnd);
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}
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else if ((cornerStyle & CornerStyle.BottomOut) != 0)
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{
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ptBegin = new PointF(ptMiddleCenter.X, rect.Bottom);
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ptEnd = new PointF(rect.X, rect.Bottom - radius);
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path.AddLine(ptBegin, ptEnd);
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}
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else
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{
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ptBegin = ptEnd = new PointF(rect.X, rect.Bottom);
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path.AddLine(ptBegin, ptEnd);
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}
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}
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else
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{
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if ((cornerStyle & CornerStyle.LeftIn) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.X - radius, rect.Bottom - diameter, diameter, diameter, 90, -lrDegrees);
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else
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path.AddArc(rect.X - radius, rect.Bottom - diameter, diameter, diameter, 90, -90);
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}
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else if ((cornerStyle & CornerStyle.LeftOut) != 0)
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{
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if (radius > halfHeight)
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path.AddArc(rect.X - (radius - lrOffset), rect.Bottom - diameter, diameter, diameter, 90, lrDegrees);
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else
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path.AddArc(rect.X, rect.Bottom - diameter, diameter, diameter, 90, 90);
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}
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else if ((cornerStyle & CornerStyle.BottomIn) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.X, rect.Bottom - radius, diameter, diameter, 180 + tbDegrees, -tbDegrees);
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else
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path.AddArc(rect.X, rect.Bottom - radius, diameter, diameter, 270, -90);
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}
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else if ((cornerStyle & CornerStyle.BottomOut) != 0)
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{
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if (radius > halfWidth)
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path.AddArc(rect.X, rect.Bottom - radius - tbOffset, diameter, diameter, 180 - tbDegrees, tbDegrees);
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else
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path.AddArc(rect.X, rect.Bottom - diameter, diameter, diameter, 90, 90);
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}
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else
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{
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path.AddArc(rect.X, rect.Bottom - diameter, diameter, diameter, 90, 90);
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}
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}
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#endregion
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//闭合返回
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path.CloseFigure();
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return path;
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}
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/// <summary>
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/// 建立带有圆角样式和标题的路径。
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/// </summary>
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/// <param name="rect">用来简历路径的矩形。</param>
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/// <param name="style">圆角样式。</param>
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/// <param name="radius">圆角大小。</param>
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/// <param name="tabSize">标题大小。</param>
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/// <param name="tabRound">标题是否圆角。</param>
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/// <param name="tabRadius">标题圆角大小。</param>
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/// <param name="correct">是否把矩形长宽减 1,以便画出边框。</param>
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/// <returns>简历的路径。</returns>
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public static GraphicsPath CreateGroupBoxTabGraphicsPath(Rectangle rect, RoundStyle style, float radius, Size tabSize, bool tabRound, float tabRadius, bool correct)
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{
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//校正
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if (correct)
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{
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rect.Width--;
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rect.Height--;
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}
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style = (float.IsNaN(radius) || radius <= 0f) ? RoundStyle.None : style;
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tabRound = (float.IsNaN(tabRadius) || tabRadius <= 0f) ? false : tabRound;
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//定义
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GraphicsPath path = new GraphicsPath();
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Rectangle tabRect = new Rectangle(rect.Location, tabSize);
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float diameter = radius * 2;
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float tabDiameter = tabRadius * 2;
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Point pt;
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//左上
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if ((style & RoundStyle.TopLeft) == 0)
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{
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pt = new Point(rect.X, rect.Y);
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path.AddLine(pt, pt);
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}
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else
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{
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path.AddArc(rect.X, rect.Y, diameter, diameter, 180, 90);
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}
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//Tab右上
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if (tabRound)
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{
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if (tabRadius > tabRect.Height)//不到90度
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{
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double radians = Math.Acos((tabRadius - tabRect.Height) / tabRadius);
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path.AddArc((float)(tabRect.Right - tabRadius * Math.Sin(radians) - tabRadius),
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tabRect.Y, tabDiameter, tabDiameter, 270, (float)MathEx.ToDegrees(radians));
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}
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else//到90度
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{
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path.AddArc(tabRect.Right - tabDiameter, tabRect.Y, tabDiameter, tabDiameter, 270, 90);
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//Tab右下
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pt = new Point(tabRect.Right, tabRect.Bottom);
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path.AddLine(pt, pt);
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}
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}
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else
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{
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pt = new Point(tabRect.Right, tabRect.Y);
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path.AddLine(pt, pt);
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//Tab右下
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pt = new Point(tabRect.Right, tabRect.Bottom);
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path.AddLine(pt, pt);
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}
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//右上
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if ((style & RoundStyle.TopRight) == 0)
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{
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pt = new Point(rect.Right, tabRect.Bottom);
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path.AddLine(pt, pt);
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}
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else
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{
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path.AddArc(rect.Right - diameter, tabRect.Bottom, diameter, diameter, 270, 90);
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}
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//右下
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if ((style & RoundStyle.BottomRight) == 0)
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{
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pt = new Point(rect.Right, rect.Bottom);
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path.AddLine(pt, pt);
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}
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else
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{
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path.AddArc(rect.Right - diameter, rect.Bottom - diameter, diameter, diameter, 0, 90);
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}
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//左下
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if ((style & RoundStyle.BottomLeft) == 0)
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{
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pt = new Point(rect.X, rect.Bottom);
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path.AddLine(pt, pt);
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}
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else
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{
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path.AddArc(rect.X, rect.Bottom - diameter, diameter, diameter, 90, 90);
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}
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//闭合返回
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path.CloseFigure();
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return path;
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}
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}
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}
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