/// <summary>
///Generates a Thumbnail
/// </summary>
/// <param name="image"></param>
/// <param name="option"></param>
/// <returns></returns>
protected virtual Image GenerateThumbnail(Image image, ThumbnailOption option)
{
var height = option.Height ?? image.Height;
var width = option.Width ?? image.Width;
var color = ColorTranslator.FromHtml(option.BackgroundColor);
Image thumbnail = null;
switch (option.ResizeMethod)
{
case ResizeMethod.FixedSize:
thumbnail = _imageResizer.FixedSize(image, width, height, color);
break;
case ResizeMethod.FixedWidth:
thumbnail = _imageResizer.FixedWidth(image, width, color);
break;
case ResizeMethod.FixedHeight:
thumbnail = _imageResizer.FixedHeight(image, height, color);
break;
case ResizeMethod.Crop:
thumbnail = _imageResizer.Crop(image, width, height, option.AnchorPosition);
break;
}
return(thumbnail);
}
/// <summary>
///Generates a Thumbnail
/// </summary>
/// <param name="image"></param>
/// <param name="option"></param>
/// <returns></returns>
protected virtual Image <Rgba32> GenerateThumbnail(Image <Rgba32> image, ThumbnailOption option)
{
var height = option.Height ?? image.Height;
var width = option.Width ?? image.Width;
var color = Rgba32.Transparent;
if (!string.IsNullOrWhiteSpace(option.BackgroundColor))
{
color = Rgba32.FromHex(option.BackgroundColor);
}
Image <Rgba32> result;
switch (option.ResizeMethod)
{
case ResizeMethod.FixedSize:
result = _imageResizer.FixedSize(image, width, height, color);
break;
case ResizeMethod.FixedWidth:
result = _imageResizer.FixedWidth(image, width, color);
break;
case ResizeMethod.FixedHeight:
result = _imageResizer.FixedHeight(image, height, color);
break;
case ResizeMethod.Crop:
result = _imageResizer.Crop(image, width, height, option.AnchorPosition);
break;
default:
throw new ArgumentOutOfRangeException($"ResizeMethod {option.ResizeMethod.ToString()} not supported.");
}
return(result);
}