Mega Code Archive

 

Categories / C# / 2D Graphics

 

Image Cache

using System.Collections.Generic; using System.Linq; using System.Windows.Media; namespace Photoviewer.Common {     public static class ImageCache     {         private static readonly Dictionary<string, ImageSource> _cacheEntries;         private static readonly int _maxEntries;         static ImageCache()         {             _cacheEntries = new Dictionary<string, ImageSource>();             _maxEntries = 10;         }         /// <summary>         /// Gets a cached version of an image source         /// specified by the key         /// </summary>         /// <param name="key"></param>         /// <returns></returns>         public static ImageSource GetCachedImageSource(string key)         {             ImageSource source = null;             if (_cacheEntries.ContainsKey(key))                 source = _cacheEntries[key];             return source;         }         /// <summary>         /// Saves an image source in the image cache         /// </summary>         /// <param name="key"></param>         /// <param name="source"></param>         public static void SaveImageSourceInCache(string key, ImageSource source)         {             if (_cacheEntries.ContainsKey(key))             {                 _cacheEntries[key] = source;                 return;             }             if (_cacheEntries.Count + 1 > _maxEntries)             {                 _cacheEntries.Remove(_cacheEntries.Keys.First());             }             _cacheEntries.Add(key, source);         }     } }