/// <summary>
/// Map image crops model
/// </summary>
/// <param name="media">Media node</param>
/// <param name="image">Image model</param>
private static void MapImageCrops(IPublishedContent media, ImageViewModel image)
{
if (media == null)
{
return;
}
var imageString = media.GetPropertyValue<string>(PropertyAliases.UmbracoFile);
var imageCrops = JsonHelper.Deserialize<ImageCropperModel>(imageString);
image.Crops = imageCrops.Crops.ToDictionary(x => x.Alias, x => media.GetCropUrl(x.Alias));
}
/// <summary>
/// Helper method for displaying an image
/// </summary>
/// <param name="helper">Html helper</param>
/// <param name="image">Image view model</param>
/// <param name="cropAlias">Crop alias</param>
/// <returns>Picture tag as Html string</returns>
public static IHtmlString DisplayImage(this HtmlHelper helper, ImageViewModel image, string cropAlias)
{
if (!ValidateArgs(image, cropAlias))
{
return null;
}
var imgTag = new TagBuilder("img");
imgTag.Attributes.Add("alt", image.AltText);
imgTag.Attributes.Add("class", "img-responsive");
imgTag.Attributes.Add("src", image.Crops[cropAlias]);
var pictureTag = new TagBuilder("picture")
{
InnerHtml = imgTag.ToString(TagRenderMode.SelfClosing)
};
return new HtmlString(pictureTag.ToString());
}
private static bool ValidateArgs(ImageViewModel image, string cropAlias)
{
return image != null && image.Crops != null && cropAlias != null && image.Crops.ContainsKey(cropAlias);
}
/// <summary>
/// Helper method for applying background image styling
/// </summary>
/// <param name="helper">Html helper</param>
/// <param name="image">Image model</param>
/// <param name="cropAlias">Crop alias</param>
/// <returns>Style attribute</returns>
public static IHtmlString DisplayBackgroundImage(this HtmlHelper helper, ImageViewModel image, string cropAlias)
{
return ValidateArgs(image, cropAlias) ? helper.DisplayBackgroundImage(image.Crops[cropAlias]) : null;
}