/// <summary>
/// returns String.Empty if not found in the cache.
/// </summary>
/// <param name="FullSizeImageFilenameOnDisk"></param>
/// <param name="longestSidePixels"></param>
/// <param name="shortestSidePixels"></param>
/// <returns></returns>
protected static string getCachedThumbnailUrl(BaseShowThumbnailPageParameters config, string FullSizeImageFilenameOnDisk, int displayBoxWidth, int displayBoxHeight)
{
ImageDiskCache diskCache = new ImageDiskCache(config.diskCacheStorageDirectoryPath);
string cacheKey = getImageCacheKey(FullSizeImageFilenameOnDisk, displayBoxWidth, displayBoxHeight);
string imgExtension = Path.GetExtension(FullSizeImageFilenameOnDisk);
if (diskCache.ExistsInCache(cacheKey, imgExtension))
{
string url = diskCache.CacheKeyToUrl(cacheKey, imgExtension);
return(url);
}
return(String.Empty);
}
/// <summary>
/// if width and height can not be determined, returns a new size with isEmpty = true.
/// </summary>
/// <param name="config"></param>
/// <param name="filename"></param>
/// <param name="longestSidePixels"></param>
/// <param name="shortestSidePixels"></param>
/// <returns></returns>
protected static System.Drawing.Size getDisplayWidthAndHeight(BaseShowThumbnailPageParameters config, string filename, int displayBoxWidth, int displayBoxHeight)
{
string FullSizeImageFilenameOnDisk = config.fullSizeImageStorageDir + filename;
string cacheKey = getImageCacheKey(FullSizeImageFilenameOnDisk, displayBoxWidth, displayBoxHeight);
ImageDiskCache diskCache = new ImageDiskCache(config.diskCacheStorageDirectoryPath);
if (config.useDiskCache && diskCache.ExistsInCache(cacheKey, Path.GetExtension(FullSizeImageFilenameOnDisk)))
{
string fn = diskCache.CacheKeyToFilename(cacheKey, Path.GetExtension(FullSizeImageFilenameOnDisk));
return(Thumbnail2.getDisplayWidthAndHeight(fn, displayBoxWidth, displayBoxHeight));
}
else if (File.Exists(FullSizeImageFilenameOnDisk))
{
return(Thumbnail2.getDisplayWidthAndHeight(FullSizeImageFilenameOnDisk, displayBoxWidth, displayBoxHeight));
}
else
{
return(new System.Drawing.Size());
}
}
