/// <summary>
/// Draws an image.
/// </summary>
/// <param name="image">The image to draw.</param>
public void DrawImage(PortableDocumentImage image)
{
if (image == null)
{
throw new ArgumentNullException("image");
}
var imageId = GetCached(image, this.imageCache, () => this.AddImage(image));
this.AppendLine("{0} Do", imageId);
}
/// <summary>
/// Adds an image.
/// </summary>
/// <param name="image">The image.</param>
/// <returns>The added object.</returns>
private string AddImage(PortableDocumentImage image)
{
int i = this.xobjects.Count + 1;
var imageObject = this.AddObject(PdfWriter.ObjectType.XObject);
imageObject["/Subtype"] = "/Image";
imageObject["/Width"] = image.Width;
imageObject["/Height"] = image.Height;
imageObject["/ColorSpace"] = "/" + image.ColorSpace;
imageObject["/Interpolate"] = image.Interpolate;
imageObject["/BitsPerComponent"] = image.BitsPerComponent;
////var flateData = Flate(bits);
////var encodedData = Ascii85Encode(flateData);
////image["/Length"] = encodedData.Length;
////image["/Filter"] = new[] { "/ASCII85Decode", "/FlateDecode" };
var encodedData = Ascii85Encode(image.Bits);
imageObject["/Length"] = encodedData.Length;
imageObject["/Filter"] = "/ASCII85Decode";
imageObject.Append(encodedData);
string imageId = "/Image" + i;
this.xobjects.Add(imageId, imageObject);
if (image.MaskBits != null)
{
var maskImage = this.AddObject(PdfWriter.ObjectType.XObject);
maskImage["/Subtype"] = "/Image";
maskImage["/Width"] = image.Width;
maskImage["/Height"] = image.Height;
maskImage["/ColorSpace"] = "/DeviceGray";
maskImage["/Interpolate"] = image.Interpolate;
maskImage["/BitsPerComponent"] = image.BitsPerComponent;
var encodedMaskData = Ascii85Encode(image.MaskBits);
maskImage["/Length"] = encodedMaskData.Length;
maskImage["/Filter"] = "/ASCII85Decode";
maskImage.Append(encodedMaskData);
imageObject["/SMask"] = maskImage;
}
return(imageId);
}
