using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.IO;

namespace TimerApp
{
    public static class IconGenerator
    {
        public static Icon GenerateClockIcon()
        {
            int size = 64;
            using (Bitmap bmp = new Bitmap(size, size))
            using (Graphics g = Graphics.FromImage(bmp))
            {
                g.SmoothingMode = SmoothingMode.AntiAlias;
                g.Clear(Color.Transparent);

                // 绘制闹钟主体
                int margin = 4;
                int clockSize = size - margin * 2;
                Rectangle rect = new Rectangle(margin, margin, clockSize, clockSize);

                // 外圈
                using (Pen pen = new Pen(Color.White, 4))
                {
                    g.DrawEllipse(pen, rect);
                }

                // 两个耳朵 (闹钟铃)
                using (Brush earBrush = new SolidBrush(Color.White))
                {
                    // 左耳
                    g.FillPie(earBrush, 0, 0, size/2, size/2, 200, 50);
                    // 右耳
                    g.FillPie(earBrush, size/2, 0, size/2, size/2, 290, 50);
                }

                // 重绘外圈盖住耳朵连接处
                using (Brush bgBrush = new SolidBrush(Color.FromArgb(30, 30, 30))) // 深色背景
                {
                    g.FillEllipse(bgBrush, rect);
                }
                using (Pen pen = new Pen(Color.White, 3))
                {
                    g.DrawEllipse(pen, rect);
                }

                // 指针
                Point center = new Point(size / 2, size / 2);
                using (Pen handPen = new Pen(Color.LightGreen, 3))
                {
                    handPen.EndCap = LineCap.Round;
                    // 时针
                    g.DrawLine(handPen, center, new Point(center.X + 10, center.Y - 10));
                    // 分针
                    g.DrawLine(handPen, center, new Point(center.X, center.Y - 18));
                }

                // 转换为图标
                // 注意：GetHicon 需要释放
                IntPtr hIcon = bmp.GetHicon();
                return Icon.FromHandle(hIcon);
            }
        }
    }
}