Eabei.GoBangGame/Eabei.Controls/ChessControl.cs

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using Eabei.Model;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Eabei.Controls
{
    public class ChessControl : Control
    {
        public ChessControl()
        {
            this.SetStyle(ControlStyles.OptimizedDoubleBuffer, true);
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
            this.SetStyle(ControlStyles.UserPaint, true);
        }

        private Model.ChessCardCamp _camp = ChessCardCamp.None;
        [DefaultValue(typeof(ChessCardCamp), "None"), Description("表示是黑棋还是白棋")]
        public ChessCardCamp Camp { get => _camp; set { _camp = value; this.Invalidate(false); } }

        protected override void OnPaint(PaintEventArgs e)
        {
            e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            //e.Graphics.DrawRectangle(new Pen(Color.FromArgb(0x64, 0x64, 0x64)), new Rectangle(0, 0, this.Width - 1, this.Height - 1));

            Image image = _camp switch
            {
                ChessCardCamp.WhiteCamp => ResourceImage.WhiteCamp,
                ChessCardCamp.BlackCamp => ResourceImage.BlackCamp,
                _ => ResourceImage.NoneCamp
            };
            e.Graphics.DrawImage(image, new RectangleF(0, 0, this.Width - 1, this.Height - 1));
            base.OnPaint(e);
        }
    }
}