public System.IO.Stream CropSquareImage(System.IO.Stream imageStream)
{
#region validation
if (imageStream == null)
{
throw new ArgumentNullException(nameof(imageStream));
}
#endregion
// get original size of image
Rect imageDimension = ImageUtil.GetDimensionFromImage(imageStream);
if (imageDimension.IsHorizontalFormat())
{
// widht is greater then height --> height is leading information
// returns image with dimension: height*height
// left and right will be cropped
return(GetImageDetail(imageStream, (imageDimension.Width - imageDimension.Height) / 2, 0, imageDimension.Height, imageDimension.Height));
}
else if (imageDimension.IsVerticalFormat())
{
// height is greater then width --> width is leading information
// return image with dimension: widht*width
// top and bottom will be croped
return(GetImageDetail(imageStream, 0, (imageDimension.Height - imageDimension.Width) / 2, imageDimension.Width, imageDimension.Width));
}
// heigth and widht are equal
// image will be returned as copy
return(imageStream.CopyStream());
}
public System.IO.Stream FillSquareImage(System.IO.Stream imageStream, string fillColor)
{
Rect imageDimension = ImageUtil.GetDimensionFromImage(imageStream);
if (imageDimension.IsSquare())
{
// heigth and widht are equal
// image will be returned as copy
return(imageStream.CopyStream());
}
int squareSize = Math.Max(imageDimension.Height, imageDimension.Width);
return(FillImage(imageStream, fillColor, squareSize, squareSize));
}