添加 Icon 图像转换工具

Fork.Net/Y.Utils/IOUtils/ImageUtils/IconTool.cs

@@ -0,0 +1,89 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Y.Utils.IOUtils.ImageUtils
+{
+    public class IconTool
+    {
+
+        /// <summary>
+        /// 将 Image 保存到指定目录文件名的 Icon
+        /// </summary>
+        /// <param name="image"></param>
+        /// <param name="file"></param>
+        /// <returns></returns>
+        public static bool Save(Image image, string file)
+        {
+            if (image != null)
+            {
+                using (Icon icon = ConvertToIcon(image))
+                {
+                    try
+                    {
+                        FileStream fs = new FileStream(file, FileMode.Create, FileAccess.Write);
+                        icon.Save(fs);
+                        fs.Flush();
+                        fs.Close();
+                        fs.Dispose();
+                        return true;
+                    }
+                    catch { }
+                }
+            }
+            return false;
+        }
+
+        /// <summary>
+        /// 转换Image为Icon
+        /// </summary>
+        /// <param name="image">要转换为图标的Image对象</param>
+        /// <param name="nullTonull">当image为null时是否返回null。false则抛空引用异常</param>
+        /// <exception cref="ArgumentNullException" />
+        public static Icon ConvertToIcon(Image image, bool nullTonull = false)
+        {
+            if (image == null)
+            {
+                if (nullTonull) { return null; }
+                throw new ArgumentNullException("image");
+            }
+
+            using (MemoryStream msImg = new MemoryStream()
+                                , msIco = new MemoryStream())
+            {
+                image.Save(msImg, ImageFormat.Png);
+
+                using (var bin = new BinaryWriter(msIco))
+                {
+                    //写图标头部
+                    bin.Write((short)0);           //0-1保留
+                    bin.Write((short)1);           //2-3文件类型。1=图标, 2=光标
+                    bin.Write((short)1);           //4-5图像数量（图标可以包含多个图像）
+
+                    bin.Write((byte)image.Width);  //6图标宽度
+                    bin.Write((byte)image.Height); //7图标高度
+                    bin.Write((byte)0);            //8颜色数（若像素位深>=8，填0。这是显然的，达到8bpp的颜色数最少是256，byte不够表示）
+                    bin.Write((byte)0);            //9保留。必须为0
+                    bin.Write((short)0);           //10-11调色板
+                    bin.Write((short)32);          //12-13位深
+                    bin.Write((int)msImg.Length);  //14-17位图数据大小
+                    bin.Write(22);                 //18-21位图数据起始字节
+
+                    //写图像数据
+                    bin.Write(msImg.ToArray());
+
+                    bin.Flush();
+                    bin.Seek(0, SeekOrigin.Begin);
+                    return new Icon(msIco);
+                }
+            }
+        }
+
+
+    }
+}

Fork.Net/Y.Utils/Y.Utils.csproj

@@ -55,6 +55,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="AppUtils\AppUnique.cs" />
+    <Compile Include="IOUtils\ImageUtils\IconTool.cs" />
     <Compile Include="ReflectionUtils\AttributeUtils\AttributeTool.cs" />
     <Compile Include="ReflectionUtils\AttributeUtils\CustomAttributeHelper.cs" />
     <Compile Include="ReflectionUtils\AttributeUtils\ControlAttribute.cs" />