/// <summary>
/// Gets the resource name of the specified image within this dictionary.
/// </summary>
internal string GetImageName(XImage image)
{
PDFImage pdfImage = _document.ImageTable.GetImage(image);
Debug.Assert(pdfImage != null);
string name = Resources.AddImage(pdfImage);
return(name);
}
/// <summary>
/// Adds the specified image to this resource dictionary
/// and returns its local resource name.
/// </summary>
public string AddImage(PDFImage image)
{
if (!_resources.TryGetValue(image, out string name))
{
name = NextImageName;
_resources[image] = name;
if (image.Reference == null)
{
Owner.IrefTable.Add(image);
}
XObjects.Elements[name] = image.Reference;
}
return(name);
}
/// <summary>
/// Gets a PDFImage from an XImage. If no PDFImage already exists, a new one is created.
/// </summary>
public PDFImage GetImage(XImage image)
{
ImageSelector selector = image._selector;
if (selector == null)
{
selector = new ImageSelector(image);
image._selector = selector;
}
if (!_images.TryGetValue(selector, out PDFImage pdfImage))
{
pdfImage = new PDFImage(Owner, image);
//pdfImage.Document = _document;
Debug.Assert(pdfImage.Owner == Owner);
_images[selector] = pdfImage;
}
return pdfImage;
}
