private static GraphicsPath GenerateRoundedRectangle(RectangleF rectangle, float radius, RectangleEdgeFilterEnum.RectangleEdgeFilter filter)
{
GraphicsPath path = new GraphicsPath();
if (radius <= 0.0F || filter == RectangleEdgeFilterEnum.RectangleEdgeFilter.None)
{
path.AddRectangle(rectangle);
path.CloseFigure();
return(path);
}
if (radius >= Math.Min(rectangle.Width, rectangle.Height) / 2.0)
{
return(GenerateCapsule(rectangle));
}
float diameter = radius * 2.0F;
SizeF sizeF = new SizeF(diameter, diameter);
RectangleF arc = new RectangleF(rectangle.Location, sizeF);
if ((RectangleEdgeFilterEnum.RectangleEdgeFilter.TopLeft & filter) == RectangleEdgeFilterEnum.RectangleEdgeFilter.TopLeft)
{
path.AddArc(arc, 180, 90);
}
else
{
path.AddLine(arc.X, arc.Y + arc.Height, arc.X, arc.Y);
path.AddLine(arc.X, arc.Y, arc.X + arc.Width, arc.Y);
}
arc.X = rectangle.Right - diameter;
if ((RectangleEdgeFilterEnum.RectangleEdgeFilter.TopRight & filter) == RectangleEdgeFilterEnum.RectangleEdgeFilter.TopRight)
{
path.AddArc(arc, 270, 90);
}
else
{
path.AddLine(arc.X, arc.Y, arc.X + arc.Width, arc.Y);
path.AddLine(arc.X + arc.Width, arc.Y + arc.Height, arc.X + arc.Width, arc.Y);
}
arc.Y = rectangle.Bottom - diameter;
if ((RectangleEdgeFilterEnum.RectangleEdgeFilter.BottomRight & filter) == RectangleEdgeFilterEnum.RectangleEdgeFilter.BottomRight)
{
path.AddArc(arc, 0, 90);
}
else
{
path.AddLine(arc.X + arc.Width, arc.Y, arc.X + arc.Width, arc.Y + arc.Height);
path.AddLine(arc.X, arc.Y + arc.Height, arc.X + arc.Width, arc.Y + arc.Height);
}
arc.X = rectangle.Left;
if ((RectangleEdgeFilterEnum.RectangleEdgeFilter.BottomLeft & filter) == RectangleEdgeFilterEnum.RectangleEdgeFilter.BottomLeft)
{
path.AddArc(arc, 90, 90);
}
else
{
path.AddLine(arc.X + arc.Width, arc.Y + arc.Height, arc.X, arc.Y + arc.Height);
path.AddLine(arc.X, arc.Y + arc.Height, arc.X, arc.Y);
}
path.CloseFigure();
return(path);
}
public static void FillRoundedRectangle(this Graphics graphics, Brush brush, RectangleF rectangle, int radius, RectangleEdgeFilterEnum.RectangleEdgeFilter filter)
{
graphics.FillRoundedRectangle(brush, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height, radius, filter);
}
public static void DrawRoundedRectangle(this Graphics graphics, Pen pen, RectangleF rectangle, int radius, RectangleEdgeFilterEnum.RectangleEdgeFilter filter)
{
graphics.DrawRoundedRectangle(pen, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height, radius, filter);
}
public static void FillRoundedRectangle(this Graphics graphics, Brush brush, float x, float y, float width, float height, float radius, RectangleEdgeFilterEnum.RectangleEdgeFilter filter)
{
RectangleF rectangle = new RectangleF(x, y, width, height);
GraphicsPath path = GenerateRoundedRectangle(rectangle, radius, filter);
graphics.FillPath(brush, path);
}
public static void DrawRoundedRectangle(this Graphics graphics, Pen pen, float x, float y, float width, float height, float radius, RectangleEdgeFilterEnum.RectangleEdgeFilter filter)
{
RectangleF rectangle = new RectangleF(x, y, width, height);
GraphicsPath path = GenerateRoundedRectangle(rectangle, radius, filter);
graphics.DrawPath(pen, path);
}
