/// <summary>
///
/// </summary>
/// <param name="path"></param>
/// <param name="layout"></param>
/// <param name="radius"></param>
/// <param name="corners"></param>
public static void AddRoundedRectangle(this GraphicsPath path, Rectangle layout, int radius, RectangleCorners corners)
{
if (path == null)
{
throw new ArgumentNullException("path");
}
if (radius < 0)
{
throw new ArgumentOutOfRangeException("radius");
}
//map the structure
int xw = layout.Right,
yh = layout.Bottom,
xwr = xw - radius,
yhr = yh - radius,
xr = layout.X + radius,
yr = layout.Y + radius,
r2 = radius * 2,
xwr2 = xw - r2,
yhr2 = yh - r2;
//create new figure
path.StartFigure();
//draw top left corner
if (corners.HasFlag(RectangleCorners.TopLeft))
{
path.AddArc(layout.X, layout.Y, r2, r2, 180, 90);
}
else
{
path.AddLine(layout.X, yr, layout.X, layout.Y);
path.AddLine(layout.X, layout.Y, xr, layout.Y);
}
//draw top line
path.AddLine(xr, layout.Y, xwr, layout.Y);
//draw top right corner
if (corners.HasFlag(RectangleCorners.TopRight))
{
path.AddArc(xwr2, layout.Y, r2, r2, 270, 90);
}
else
{
path.AddLine(xwr, layout.Y, xw, layout.Y);
path.AddLine(xw, layout.Y, xw, yr);
}
//draw right line
path.AddLine(xw, yr, xw, yhr);
//draw bottom right corner
if (corners.HasFlag(RectangleCorners.BottomRight))
{
path.AddArc(xwr2, yhr2, r2, r2, 0, 90);
}
else
{
path.AddLine(xw, yhr, xw, yh);
path.AddLine(xw, yh, xwr, yh);
}
//draw bottom line
path.AddLine(xwr, yh, xr, yh);
//draw bottom left corner
if (corners.HasFlag(RectangleCorners.BottomLeft))
{
path.AddArc(layout.X, yhr2, r2, r2, 90, 90);
}
else
{
path.AddLine(xr, yh, layout.X, yh);
path.AddLine(layout.X, yh, layout.X, yhr);
}
//draw left line
path.AddLine(layout.X, yhr, layout.X, yr);
//complete figure
path.CloseFigure();
}
public static GraphicsPath Create(int x, int y, int width, int height, int radius, RectangleCorners corners, WhichHalf half)
{
if (radius <= 0)
{
GraphicsPath rectp = new GraphicsPath();
rectp.AddRectangle(new Rectangle(x, y, width, height));
return(rectp);
}
int dia = radius * 2;
Rectangle TLarc = new Rectangle(x, y, dia, dia);
Rectangle TRarc = new Rectangle(x + width - dia - 1, y, dia, dia);
Rectangle BRarc = new Rectangle(x + width - dia - 1, y + height - dia - 1, dia, dia);
Rectangle BLarc = new Rectangle(x, y + height - dia - 1, dia, dia);
Rectangle TLsquare = new Rectangle(x, y, radius, radius);
Rectangle TRsquare = new Rectangle(x + width - radius, y, radius, radius);
Rectangle BRsquare = new Rectangle(x + width - radius, y + height - radius, radius, radius);
Rectangle BLsquare = new Rectangle(x, y + height - radius, radius, radius);
GraphicsPath p = new GraphicsPath();
p.StartFigure();
if (half == WhichHalf.Both || half == WhichHalf.TopLeft)
{
if (corners.HasFlag(RectangleCorners.BottomLeft))
{
p.AddArc(BLarc, 135, 45);
}
else
{
p.AddLine(BLsquare.Left, BLsquare.Bottom, BLsquare.Left, BLsquare.Top);
}
p.AddLine(BLsquare.Left, BLsquare.Top - 1, TLsquare.Left, TLsquare.Bottom + 1);
if (corners.HasFlag(RectangleCorners.TopLeft))
{
p.AddArc(TLarc, 180, 90);
}
else
{
Corner(p, TLsquare.Left, TLsquare.Bottom, TLsquare.Left, TLsquare.Top, TLsquare.Right, TLsquare.Top);
}
p.AddLine(TLsquare.Right + 1, TLsquare.Top, TRsquare.Left - 1, TRsquare.Top);
if (corners.HasFlag(RectangleCorners.TopRight))
{
p.AddArc(TRarc, -90, 45);
}
}
if (half == WhichHalf.Both || half == WhichHalf.BottomRight)
{
if (corners.HasFlag(RectangleCorners.TopRight))
{
p.AddArc(TRarc, -45, 45);
}
else
{
p.AddLine(TRsquare.Right, TRsquare.Top, TRsquare.Right, TRsquare.Bottom);
}
p.AddLine(TRsquare.Right, TRsquare.Bottom + 1, BRsquare.Right, BRsquare.Top - 1);
if (corners.HasFlag(RectangleCorners.BottomRight))
{
p.AddArc(BRarc, 0, 90);
}
else
{
Corner(p, BRsquare.Right, BRsquare.Top, BRsquare.Right, BRsquare.Bottom, BRsquare.Left, BRsquare.Bottom);
}
p.AddLine(BRsquare.Left - 1, BRsquare.Bottom, BLsquare.Right + 1, BLsquare.Bottom);
if (corners.HasFlag(RectangleCorners.BottomLeft))
{
p.AddArc(BLarc, 90, 45);
}
else
{
p.AddLine(BLsquare.Right, BLsquare.Bottom, BLsquare.Left, BLsquare.Bottom);
}
}
return(p);
}
