HEX colors plugin

Wox.Plugin.SystemPlugins/ColorsPlugin.cs

@@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Drawing.Imaging;
+using System.IO;
+using System.Linq;
+
+namespace Wox.Plugin.SystemPlugins
+{
+    public sealed class ColorsPlugin : BaseSystemPlugin
+    {
+        private const string DIR_PATH = ".\\Plugins\\Colors\\";
+        private const int IMG_SIZE = 32;
+
+        private DirectoryInfo ColorsDirectory { get; set; }
+
+        public ColorsPlugin()
+        {
+            if(!Directory.Exists(DIR_PATH))
+            {
+                ColorsDirectory = Directory.CreateDirectory(DIR_PATH);
+            }
+            else
+            {
+                ColorsDirectory = new DirectoryInfo(DIR_PATH);
+            }
+        }
+
+        protected override List<Result> QueryInternal(Query query)
+        {
+            var raw = query.RawQuery;
+            if(!IsAvailable(raw)) return new List<Result>(0);
+            try
+            {
+                var cached = Find(raw);
+                if(cached.Length == 0)
+                {
+                    var path = CreateImage(raw);
+                    return new List<Result> {new Result(raw, path)};
+                }
+                return cached.Select(x => new Result(raw, x.FullName)).ToList();
+            }
+            catch (Exception exception)
+            {
+                // todo: log
+                return new List<Result>(0);
+            }
+        }
+
+        private bool IsAvailable(string query)
+        {
+            // todo: rgb, names
+            var length = query.Length - 1; // minus `#` sign
+            return query.StartsWith("#") && (length == 3 || length == 6);
+        }
+
+        public FileInfo[] Find(string name)
+        {
+            var file = string.Format("{0}.png", name.Substring(1));
+            return ColorsDirectory.GetFiles(file, SearchOption.TopDirectoryOnly);
+        }
+
+        public string CreateImage(string name)
+        {
+            using (var bitmap = new Bitmap(IMG_SIZE, IMG_SIZE))
+            using (var graphics = Graphics.FromImage(bitmap))
+            {
+                var color = ColorTranslator.FromHtml(name);
+                graphics.Clear(color);
+
+                var path = CreateFileName(name);
+                bitmap.Save(path, ImageFormat.Png);
+                return path;
+            }
+        }
+
+        private string CreateFileName(string name)
+        {
+            return string.Format("{0}{1}.png", ColorsDirectory.FullName, name.Substring(1));
+        }
+
+        protected override void InitInternal(PluginInitContext context)
+        {
+        }
+    }
+}

Wox.Plugin.SystemPlugins/Wox.Plugin.SystemPlugins.csproj

@@ -55,6 +55,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="CMD\CMDStorage.cs" />
+    <Compile Include="ColorsPlugin.cs" />
     <Compile Include="FileSystem\FileSystemSettings.xaml.cs">
       <DependentUpon>FileSystemSettings.xaml</DependentUpon>
     </Compile>