public static string ScaledImage(this UrlHelper urlHelper, ContentReference contentReference, ImagePreset preset)
{
var urlResolver = ServiceLocator.Current.GetInstance<UrlResolver>();
var url = urlResolver.GetUrl(
contentReference,
ContentLanguage.PreferredCulture.Name,
new VirtualPathArguments { ContextMode = ContextMode.Default });
url += url.Contains("?") ? "&" : "?";
url += "preset=" + preset;
return url;
}
private static void GetScaledImage(ImagePreset preset, KalikoImage image, string filePath)
{
using (var scaledImage = image.Scale(preset.ScaleMethod, preset.PreventUpscaling)) {
foreach (var filter in preset.Filters)
{
scaledImage.ApplyFilter(filter);
}
scaledImage.SaveJpg(filePath, preset.Quality);
}
}
public static void AddPreset(ImagePreset preset)
{
if (preset == null)
{
throw new ArgumentException("Preset may not be null.");
}
if (string.IsNullOrEmpty(preset.Name))
{
throw new ArgumentException("Preset name may not be null or empty.");
}
if (Presets.ContainsKey(preset.Name))
{
throw new ArgumentException("Preset name already exists in collection.");
}
Presets.Add(preset.Name, preset);
}
public ActionResult GetImageResult(ImageProviderBase imageProvider, ImagePreset preset)
{
// TODO: Add sub-routing based on image format
if (imageProvider.Path.ToLowerInvariant().EndsWith(".png"))
{
return(imageProvider.ServeOriginal("image/png"));
}
var imagePath = BuildImagePath(imageProvider);
if (File.Exists(imagePath))
{
return(new FilePathResult(imagePath, "image/jpeg"));
}
using (var image = imageProvider.GetImage()) {
GetScaledImage(preset, image, imagePath);
}
return(new FilePathResult(imagePath, "image/jpeg"));
}
public static string CachedImage(this UrlHelper urlHelper, string path, ImagePreset preset)
{
return(CachedImage(urlHelper, path, preset.Name));
}
public static MvcHtmlString CachedImage(this HtmlHelper htmlHelper, string path, ImagePreset preset, object htmlAttributes = null)
{
return(CachedImage(htmlHelper, path, preset.Name, htmlAttributes));
}
public ImageSource(ImagePreset preset)
{
Breakpoint = preset.ScaleMethod.TargetWidth;
Preset = preset;
Unit = "w";
}
public ImageSource(ImagePreset preset, int breakpoint, string unit = "w")
{
Breakpoint = breakpoint;
Preset = preset;
Unit = unit;
}
public static List<ImageOperation> Get(ImagePreset preset)
{
var result = Presets.SingleOrDefault(x => String.Equals(x.Preset.ToString(), preset.ToString(), StringComparison.CurrentCultureIgnoreCase));
return result != null ? result.ImageOperations : NoTransform.ImageOperations;
}
