using System.Collections;
using System.Drawing;
using System.Drawing.Drawing2D;

namespace System.Windows.Forms
{
    internal static class ResPool
    {
        private static Hashtable pens = new();
        private static Hashtable brushes = new();
        private static Hashtable fonts = new();

        public static Pen GetPen(Color color)
        {
            return GetPen(color, 1, DashStyle.Solid);
        }

        public static Pen GetPen(Color color, float width)
        {
            return GetPen(color, width, DashStyle.Solid);
        }

        public static Pen GetPen(Color color, float width, DashStyle style)
        {
            int hash = color.GetHashCode() ^ width.GetHashCode() ^ style.GetHashCode();
            Pen result = pens[hash] as Pen;
            if (result == null)
            {
                result = new Pen(color, width);
                result.DashStyle = style;
                pens[hash] = result;
            }
            return result;
        }

        public static SolidBrush GetSolidBrush(Color color)
        {
            int hash = color.GetHashCode();
            SolidBrush result = brushes[hash] as SolidBrush;
            if (result == null)
            {
                result = new SolidBrush(color);
                brushes[hash] = result;
            }
            return result;
        }

        public static Font GetFont(FontFamily name, float size, Drawing.FontStyle style)
        {
            int hash = name.GetHashCode() ^ size.GetHashCode() ^ style.GetHashCode();
            Font result = fonts[hash] as Font;
            if (result == null)
            {
                result = new Font(name, size, style);
                fonts[hash] = result;
            }
            return result;
        }

    }
}