JD2022-TU1/main/tools/framework/JD.Application.TeaBox/View/WindowLess/RectangleExtensions.cs

using System.Drawing;

namespace JD.Application.View.WindowLess
{
    /// <summary>
    /// Adds functions to rectangle
    /// </summary>
    public static class DrawingExtensions
    {
        /// <summary>
        /// Returns the union of both rectangles, but does consider the empty rectangle as the neutral value.
        /// </summary>
        public static Rectangle Union(this Rectangle a, Rectangle b)
        {
            if (Equals(a, Rectangle.Empty))
            {
                return b;
            }
            if (Equals(b, Rectangle.Empty))
            {
                return a;
            }
            return Rectangle.Union(a, b);
        }

        /// <summary>
        /// Returns the union of both rectangles, but does consider the empty rectangle as the neutral value.
        /// </summary>
        public static RectangleF Union(this RectangleF a, RectangleF b)
        {
            if (Equals(a, RectangleF.Empty))
            {
                return b;
            }
            if (Equals(b, RectangleF.Empty))
            {
                return a;
            }
            return RectangleF.Union(a, b);
        }
    }
}