/// <summary>
/// Creates a reference to the sprite / inlined version of the desired image including special attributes.
/// </summary>
/// <param name="virtualPath">The relative path of the image to be displayed</param>
/// <param name="htmlAttributes">Html Attributes of IDictionary form</param>
/// <returns>Image tag.</returns>
public static IHtmlString Image(string virtualPath, IDictionary <string, object> htmlAttributes)
{
ImageOptimizations.EnsureInitialized();
TagBuilder htmlTag = new TagBuilder("img");
htmlTag.MergeAttributes(htmlAttributes);
HttpContextBase httpContext = new HttpContextWrapper(HttpContext.Current);
string localSpriteDirectory = Path.GetDirectoryName(httpContext.Server.MapPath(virtualPath));
if (ImageOptimizations.LinkCompatibleCssFileName(httpContext.Request.Browser, localSpriteDirectory) == null)
{
htmlTag.MergeAttribute("src", ResolveUrl(virtualPath));
return(new HtmlString(htmlTag.ToString(TagRenderMode.SelfClosing)));
}
else
{
htmlTag.AddCssClass(ImageOptimizations.MakeCssClassName(virtualPath));
htmlTag.MergeAttribute("src", ResolveUrl(ImageOptimizations.GetBlankImageSource(httpContext.Request.Browser)));
return(new HtmlString(htmlTag.ToString(TagRenderMode.SelfClosing)));
}
}
/// <summary>
/// Creates the proper CSS link reference within the target CSHTML page's head section
/// </summary>
/// <param name="virtualPath">The relative path of the image to be displayed, or its directory</param>
/// <returns>Link tag if the file is found.</returns>
public static IHtmlString ImportStylesheet(string virtualPath)
{
ImageOptimizations.EnsureInitialized();
if (Path.HasExtension(virtualPath))
{
virtualPath = Path.GetDirectoryName(virtualPath);
}
HttpContextBase httpContext = new HttpContextWrapper(HttpContext.Current);
// Set up fileName and path variables
string localPath = httpContext.Server.MapPath(virtualPath);
string cssFileName = ImageOptimizations.LinkCompatibleCssFileName(httpContext.Request.Browser, localPath);
if (cssFileName == null)
{
return(null);
}
virtualPath = Path.Combine(virtualPath, cssFileName);
string physicalPath = HttpContext.Current.Server.MapPath(virtualPath);
if (File.Exists(physicalPath))
{
TagBuilder htmlTag = new TagBuilder("link");
htmlTag.MergeAttribute("href", ResolveUrl(virtualPath));
htmlTag.MergeAttribute("rel", "stylesheet");
htmlTag.MergeAttribute("type", "text/css");
htmlTag.MergeAttribute("media", "all");
return(new HtmlString(htmlTag.ToString(TagRenderMode.SelfClosing)));
}
return(null);
}
