private static Annot setStamperImage(StamperImage stp)
        {
            var page = _currentDoc.GetPage(stp.Page());

            using (pdftron.PDF.Stamper s = new pdftron.PDF.Stamper(pdftron.PDF.Stamper.SizeType.e_relative_scale, .5, .5))
            {
                s.SetAsAnnotation(true);
                var rect = AnnotationsMannager.ConvertRect(stp.RectArea());
                _currentDoc.InitSecurityHandler();
                //pdftron.PDF.Image img = pdftron.PDF.Image.Create(_currentDoc, String.IsNullOrEmpty(stp.ImagePath()) ? "SuccessStamp.jpg" : stp.ImagePath());
                pdftron.PDF.Image img = pdftron.PDF.Image.Create(_currentDoc, System.Convert.FromBase64String(stp.Image()));
                s.SetTextAlignment(pdftron.PDF.Stamper.TextAlignment.e_align_center);
                s.SetAlignment(pdftron.PDF.Stamper.HorizontalAlignment.e_horizontal_left, pdftron.PDF.Stamper.VerticalAlignment.e_vertical_bottom);
                s.SetSize(pdftron.PDF.Stamper.SizeType.e_absolute_size, rect.x2 - rect.x1, rect.y2 - rect.y1);
                s.SetPosition(rect.x1, rect.y1);
                s.SetAsBackground(false);
                s.SetOpacity(.3);
                s.StampImage(_currentDoc, img, new PageSet(stp.Page()));
            }
            var annot = page.GetAnnot(page.GetNumAnnots() - 1);

            stp.RectArea(AnnotationsMannager.ConvertRect(annot.GetRect()));

            return(annot);
        }
Ejemplo n.º 2
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        /// <summary>
        /// Stamp a JPEG image to a PDF document in a specific position
        /// </summary>
        /// <param name="doc">PDF Document to add the barcode</param>
        /// <param name="jpegBytes">The encoded JPEG byte array</param>
        /// <param name="h">Horizontal position</param>
        /// <param name="v">Vertical position</param>
        private void StampToPage(PDFDoc doc, byte[] jpegBytes, double h, double v)
        {
            // Stamping PDF file
            pdftron.PDF.Image barcodeImage = pdftron.PDF.Image.Create(doc.GetSDFDoc(), jpegBytes);

            Stamper barcodeStamp = new Stamper(StamperSizeType.e_absolute_size, 150, 150);

            //set position of the image to the center, left of PDF pages
            barcodeStamp.SetAlignment(StamperHorizontalAlignment.e_horizontal_left, StamperVerticalAlignment.e_vertical_bottom);
            barcodeStamp.SetAsAnnotation(true);

            double xPos = h - (150 / 2);
            double yPos = v - (150 / 2);

            barcodeStamp.SetPosition(xPos, yPos);
            barcodeStamp.SetFontColor(new ColorPt(0, 0, 0, 0));
            //barcodeStamp.SetRotation(180);
            barcodeStamp.SetAsBackground(false);
            // Stamp current viewing page
            barcodeStamp.StampImage(doc, barcodeImage, new PageSet(PDFViewCtrl.GetCurrentPage(), PDFViewCtrl.GetCurrentPage()));

            // Render current visible region
            PDFViewCtrl.Update();
        }
Ejemplo n.º 3
0
        static void ImageExtract(PDFDoc doc, ElementReader reader)
        {
            Element element;

            while ((element = reader.Next()) != null)
            {
                switch (element.GetType())
                {
                case Element.Type.e_image:
                case Element.Type.e_inline_image:
                {
                    Console.WriteLine("--> Image: {0}", ++image_counter);
                    Console.WriteLine("    Width: {0}", element.GetImageWidth());
                    Console.WriteLine("    Height: {0}", element.GetImageHeight());
                    Console.WriteLine("    BPC: {0}", element.GetBitsPerComponent());

                    Matrix2D ctm = element.GetCTM();
                    double   x2 = 1, y2 = 1, y1 = ctm.m_v;
                    ctm.Mult(ref x2, ref y2);
                    // Write the coords to 3 decimal places.
                    Console.WriteLine("    Coords: x1={0:N2}, y1={1:N2}, x2={2:N2}, y2={3:N2}", ctm.m_h, ctm.m_v, x2, y2);
                    pdftron.PDF.Image image = null;
                    if (element.GetType() == Element.Type.e_image)
                    {
                        image = new pdftron.PDF.Image(element.GetXObject());
                        // Convert PDF bitmap to GDI+ Bitmap...
                        //Bitmap bmp = element.GetBitmap();
                        //bmp.Save(fname, ImageFormat.Png);
                        //bmp.Dispose();

                        // Instead of converting PDF images to a Bitmap, you can also extract
                        // uncompressed/compressed image data directly using element.GetImageData()
                        // as illustrated in ElementReaderAdv sample project.
                    }
                    else                             // inline image
                    {
                        if (y1 > y2)
                        {
                            byte[] flipped_image = FlipImage(element);
                            image = pdftron.PDF.Image.Create(doc, flipped_image, element.GetImageWidth(), element.GetImageHeight(), 8, ColorSpace.CreateDeviceRGB());
                        }
                        else
                        {
                            Image2RGB    image2rgb    = new Image2RGB(element);
                            FilterReader image_reader = new FilterReader(image2rgb);
                            image = pdftron.PDF.Image.Create(doc, image_reader, element.GetImageWidth(), element.GetImageHeight(), 8, ColorSpace.CreateDeviceRGB());
                        }
                    }
                    string fname = output_path + "image_extract1_" + image_counter.ToString();
                    image.Export(fname);                              // or ExporAsPng() or ExporAsTiff() ...
                    break;
                }

                case Element.Type.e_form:                         // Process form XObjects
                {
                    reader.FormBegin();
                    ImageExtract(doc, reader);
                    reader.End();
                    break;
                }
                }
            }
        }
Ejemplo n.º 4
0
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        static void Main()
        {
            // Initialize PDFNet before calling any other PDFNet function.
            PDFNet.Initialize();

            string input_path     = "../../TestFiles/";
            string output_path    = "../../TestFiles/Output/";
            string input_filename = "US061222892-a.pdf";

            PDFDoc pdf_doc = new PDFDoc(input_path + input_filename);

            pdf_doc.InitSecurityHandler();

            SDFDoc cos_doc  = pdf_doc.GetSDFDoc();
            int    num_objs = cos_doc.XRefSize();

            for (int i = 1; i < num_objs; ++i)
            {
                Obj obj = cos_doc.GetObj(i);
                if (obj != null && !obj.IsFree() && obj.IsStream())
                {
                    // Process only images
                    DictIterator itr = obj.Find("Subtype");
                    if (!itr.HasNext() || itr.Value().GetName() != "Image")
                    {
                        continue;
                    }

                    pdftron.PDF.Image input_image = new pdftron.PDF.Image(obj);
                    pdftron.PDF.Image new_image   = null;

                    // Process only gray-scale images
                    if (input_image.GetComponentNum() != 1)
                    {
                        continue;
                    }

                    int bpc = input_image.GetBitsPerComponent();
                    if (bpc != 1)                     // Recompress 1 BPC images
                    {
                        continue;
                    }

                    // Skip images that are already compressed using JBIG2
                    itr = obj.Find("Filter");
                    if (itr.HasNext() && itr.Value().IsName() &&
                        itr.Value().GetName() == "JBIG2Decode")
                    {
                        continue;
                    }

                    FilterReader reader = new FilterReader(obj.GetDecodedStream());

                    ObjSet hint_set = new ObjSet();
                    Obj    hint     = hint_set.CreateArray();
                    hint.PushBackName("JBIG2");
                    hint.PushBackName("Lossless");
                    hint.PushBackName("Threshold");
                    hint.PushBackNumber(0.4);
                    hint.PushBackName("SharePages");
                    hint.PushBackNumber(10000);

                    new_image = pdftron.PDF.Image.Create(
                        cos_doc,
                        reader,
                        input_image.GetImageWidth(),
                        input_image.GetImageHeight(),
                        1,
                        ColorSpace.CreateDeviceGray(),
                        hint                          // A hint to image encoder to use JBIG2 compression
                        );

                    Obj new_img_obj = new_image.GetSDFObj();

                    // Copy any important entries from the image dictionary
                    itr = obj.Find("ImageMask");
                    if (itr.HasNext())
                    {
                        new_img_obj.Put("ImageMask", itr.Value());
                    }

                    itr = obj.Find("Mask");
                    if (itr.HasNext())
                    {
                        new_img_obj.Put("Mask", itr.Value());
                    }

                    cos_doc.Swap(i, new_image.GetSDFObj().GetObjNum());
                }
            }

            pdf_doc.Save(output_path + "US061222892_JBIG2.pdf", SDFDoc.SaveOptions.e_remove_unused);
            pdf_doc.Close();
        }
Ejemplo n.º 5
0
        static void Main(string[] args)
        {
            PDFNet.Initialize();

            // Example 1:
            // Extract images by traversing the display list for
            // every page. With this approach it is possible to obtain
            // image positioning information and DPI.
            try
            {
                using (PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf"))
                    using (ElementReader reader = new ElementReader())
                    {
                        doc.InitSecurityHandler();

                        PageIterator itr;
                        for (itr = doc.GetPageIterator(); itr.HasNext(); itr.Next())
                        {
                            reader.Begin(itr.Current());
                            ImageExtract(doc, reader);
                            reader.End();
                        }

                        Console.WriteLine("Done.");
                    }
            }
            catch (PDFNetException e)
            {
                Console.WriteLine(e.Message);
            }

            Console.WriteLine("----------------------------------------------------------------");

            // Example 2:
            // Extract images by scanning the low-level document.
            try
            {
                using (PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf"))
                {
                    doc.InitSecurityHandler();
                    image_counter = 0;

                    SDFDoc cos_doc  = doc.GetSDFDoc();
                    int    num_objs = cos_doc.XRefSize();
                    for (int i = 1; i < num_objs; ++i)
                    {
                        Obj obj = cos_doc.GetObj(i);
                        if (obj != null && !obj.IsFree() && obj.IsStream())
                        {
                            // Process only images
                            DictIterator itr = obj.Find("Subtype");
                            if (!itr.HasNext() || itr.Value().GetName() != "Image")
                            {
                                continue;
                            }

                            itr = obj.Find("Type");
                            if (!itr.HasNext() || itr.Value().GetName() != "XObject")
                            {
                                continue;
                            }

                            pdftron.PDF.Image image = new pdftron.PDF.Image(obj);

                            Console.WriteLine("--> Image: {0}", ++image_counter);
                            Console.WriteLine("    Width: {0}", image.GetImageWidth());
                            Console.WriteLine("    Height: {0}", image.GetImageHeight());
                            Console.WriteLine("    BPC: {0}", image.GetBitsPerComponent());

                            string fname = output_path + "image_extract2_" + image_counter.ToString();
                            image.Export(fname);                              // or ExporAsPng() or ExporAsTiff() ...

                            // Convert PDF bitmap to GDI+ Bitmap...
                            //Bitmap bmp = image.GetBitmap();
                            //bmp.Save(fname, ImageFormat.Png);
                            //bmp.Dispose();

                            // Instead of converting PDF images to a Bitmap, you can also extract
                            // uncompressed/compressed image data directly using element.GetImageData()
                            // as illustrated in ElementReaderAdv sample project.
                        }
                    }
                }
            }
            catch (PDFNetException e)
            {
                Console.WriteLine(e.Message);
            }
        }