/// <summary>
/// Adds new source element with specified media, width and or height.
/// </summary>
/// <param name="picture"></param>
/// <param name="media"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <returns></returns>
public static TypedPictureElement Source(this TypedPictureElement picture, string media, int width, int?height = null)
{
picture.Sources.Add(new SourceElement {
Media = media,
Srcset = new List <string> {
{ picture.GetCropUrl(width, height) }
}
});
return(picture);
}
/// <summary>
/// Adds srcset to img with specified width, height and device pixel ratio.
/// </summary>
/// <param name="picture"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="devicePixelRatioArgs"></param>
/// <returns></returns>
public static TypedPictureElement Srcset(this TypedPictureElement picture, int width, int?height = null, params double[] devicePixelRatioArgs)
{
var srcsets = new List <string>();
foreach (double devicePixelRatio in devicePixelRatioArgs)
{
int newWidth = (int)(width * devicePixelRatio);
int?newHeight = height.HasValue ? (int)(height.Value * devicePixelRatio) : height;
picture.Srcset.Add(picture.GetCropUrl(newWidth, newHeight, devicePixelRatio));
}
return(picture);
}
/// <summary>
/// Adds new source element with specified media, width and or height, times following device pixel ratio's
/// </summary>
/// <param name="picture"></param>
/// <param name="media"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="devicePixelRatioArgs"></param>
/// <returns></returns>
public static TypedPictureElement Source(this TypedPictureElement picture, string media, int width, int?height = null, params double[] devicePixelRatioArgs)
{
if (picture.Content == null)
{
throw new System.ArgumentNullException("Content", "Missing Content from Picture. Use Umbraco.Picture(IPublishedContent)");
}
var srcsets = new List <string>();
foreach (double devicePixelRatio in devicePixelRatioArgs)
{
int newWidth = (int)(width * devicePixelRatio);
int?newHeight = height.HasValue ? (int?)(height.Value * devicePixelRatio) : height;
srcsets.Add(picture.GetCropUrl(newWidth, newHeight, devicePixelRatio));
}
picture.Sources.Add(new SourceElement
{
Media = media,
Srcset = srcsets
});
return(picture);
}