Doc AddImageObject Function. Adds an XImage based image to the current page. ABCpdf .NET PDF Library.

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AddImageObject Function  

Adds an XImage based image to the current page.

 

  
Syntax 

[C#]
int AddImageObject(XImage image)
int AddImageObject(XImage image, bool transparent)

[Visual Basic]
Function AddImageObject(image As XImage) As Integer
Function AddImageObject(image As XImage, transparent As Boolean) As Integer

Throws Exceptions may throw Exception()

 

  

Params		 
NameDescription
image

An XImage containing the image to be added to the page.

transparent

Whether transparency information should be preserved. This parameter overrides the PreserveTransparency property of the XReadOptions used to create the XImage. If this parameter is not specified and the XImage has been created without a XReadOptions, this parameter is defaulted to false.

returnThe ID of the newly added Image Object. If the image is added as multiple objects, such as if it has been created with an XReadOptions with ReadModule of SwfVector (with a non-null Operation), Xps, or XpsAny, the ID is zero. If XReadOptions.Operation has been null, the temporary SwfImportOperation allows this method to return the ID of the GraphicLayer for the frame of XReadOptions.Frame.

 

  

Notes		 

If the XImage has been created with an XReadOptions with ReadModule that uses an Operation, the operation will be invoked and the result depends on the operation. Otherwise, this method gets an image from the Image object and adds it to the current page returning the ID of the newly added object.

Adds the Selection of the current Frame returning the ID of the newly added object.

Images embedded using this method are always inserted using indirect mode. Indirect mode is not as fast as pass-through mode. However it allows greater flexibility and the use of many different image formats.

If the Transparent parameter is set to true then any transparency information will be preserved. This allows you to add formats such as transparent GIF, PNG with alpha channel, or images with masks set using the Image.SetMask method.

The image is scaled to fill the current Rect. It is transformed using the current Transform.

Hyperlinks. Sometimes you may wish to insert annotations such as links to an external web page specified using a URI or URL. The AddHtml method allows you to specify links but only on text. If, for example, you want to insert a link over content such as an image you need to add it separately. You can do this using code of the following form.

static int AddLinkToUri(Doc doc, XRect rect, string uri) {
  int id = doc.AddObject("<< /Type /Annot /Subtype /Link /A << /Type /Action /S /URI /URI () >> /Border [0 0 0] >>");
  doc.SetInfo(doc.Page, "/Annots*[]:Ref", id);
  doc.SetInfo(id, "/Rect:Rect", doc.Rect.String);
  doc.SetInfo(id, "/A/URI:Text", uri);
  return id;
}

If you wish to link to a particular page specified by page ID you can use code of the following form.

static int AddLinkToPage(Doc doc, XRect rect, int pageID) {
  int id = doc.AddObject("<< /Type /Annot /Subtype /Link /Border [0 0 0] /A << /Type /Action /S /GoTo /D [ /XYZ null null 0] >> >>");
  doc.SetInfo(doc.Page, "/Annots*[]:Ref", id);
  doc.SetInfo(id, "/Rect:Rect", doc.Rect.String);
  doc.SetInfo(id, "/A/D[0]:Ref", pageID.ToString());
  return id;
}

 

  

Example		 

The following code adds a transparent GIF against a gray background.

[C#]
XImage theImg = new XImage();
theImg.SetFile(Server.MapPath("../mypics/mypic.gif"));
Doc theDoc = new Doc();
theDoc.Color.String = "200 200 200";
theDoc.FillRect();
theDoc.Rect.String = "0 0 0 0";
theDoc.AddImageObject(theImg, true);
theImg.Clear();
theDoc.Save(Server.MapPath("docaddimageobject.pdf"));
theDoc.Clear();

[Visual Basic]
Dim theImg As XImage = New XImage()
theImg.SetFile(Server.MapPath("../mypics/mypic.gif"))
Dim theDoc As Doc = New Doc()
theDoc.Color.String = "200 200 200"
theDoc.FillRect()
theDoc.Rect.String = "0 0 0 0"
theDoc.AddImageObject(theImg, True)
theImg.Clear()
theDoc.Save(Server.MapPath("docaddimageobject.pdf"))
theDoc.Clear()


docaddimageobject.pdf

 

  

 

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