Ejemplo n.º 1
0
// ===========================================================================
        public void Write(Stream stream)
        {
            // step 1
            using (Document document = new Document()) {
                // step 2
                PdfWriter writer = PdfWriter.GetInstance(document, stream);
                // step 3
                document.Open();
                // step 4
                PdfContentByte cb  = writer.DirectContent;
                float          gap = (document.PageSize.Width - 400) / 3;

                PictureBackdrop(gap, 500, cb, writer);
                PictureBackdrop(200 + 2 * gap, 500, cb, writer);
                PictureBackdrop(gap, 500 - 200 - gap, cb, writer);
                PictureBackdrop(200 + 2 * gap, 500 - 200 - gap, cb, writer);
                PdfTemplate          tp;
                PdfTransparencyGroup group;

                tp = cb.CreateTemplate(200, 200);
                PictureCircles(0, 0, tp);
                group          = new PdfTransparencyGroup();
                group.Isolated = true;
                group.Knockout = true;
                tp.Group       = group;
                cb.AddTemplate(tp, gap, 500);

                tp = cb.CreateTemplate(200, 200);
                PictureCircles(0, 0, tp);
                group          = new PdfTransparencyGroup();
                group.Isolated = true;
                group.Knockout = false;
                tp.Group       = group;
                cb.AddTemplate(tp, 200 + 2 * gap, 500);

                tp = cb.CreateTemplate(200, 200);
                PictureCircles(0, 0, tp);
                group          = new PdfTransparencyGroup();
                group.Isolated = false;
                group.Knockout = true;
                tp.Group       = group;
                cb.AddTemplate(tp, gap, 500 - 200 - gap);

                tp = cb.CreateTemplate(200, 200);
                PictureCircles(0, 0, tp);
                group          = new PdfTransparencyGroup();
                group.Isolated = false;
                group.Knockout = false;
                tp.Group       = group;
                cb.AddTemplate(tp, 200 + 2 * gap, 500 - 200 - gap);
            }
        }
 public virtual void TransparencyCheckTest1()
 {
     NUnit.Framework.Assert.That(() => {
         PdfWriter writer             = new PdfWriter(new MemoryStream());
         Stream @is                   = new FileStream(sourceFolder + "sRGB Color Space Profile.icm", FileMode.Open, FileAccess.Read);
         PdfOutputIntent outputIntent = new PdfOutputIntent("Custom", "", "http://www.color.org", "sRGB IEC61966-2.1"
                                                            , @is);
         PdfADocument doc = new PdfADocument(writer, PdfAConformanceLevel.PDF_A_1B, outputIntent);
         doc.AddNewPage();
         PdfCanvas canvas       = new PdfCanvas(doc.GetLastPage());
         PdfFormXObject xObject = new PdfFormXObject(new Rectangle(100, 100));
         PdfCanvas xObjCanvas   = new PdfCanvas(xObject, doc);
         xObjCanvas.Rectangle(30, 30, 10, 10).Fill();
         PdfTransparencyGroup group = new PdfTransparencyGroup();
         xObject.SetGroup(group);
         canvas.AddXObject(xObject, new Rectangle(300, 300));
         doc.Close();
     }
                                 , NUnit.Framework.Throws.InstanceOf <PdfAConformanceException>().With.Message.EqualTo(PdfAConformanceException.A_GROUP_OBJECT_WITH_AN_S_KEY_WITH_A_VALUE_OF_TRANSPARENCY_SHALL_NOT_BE_INCLUDED_IN_A_FORM_XOBJECT))
     ;
 }
Ejemplo n.º 3
0
// ---------------------------------------------------------------------------
        public byte[] CreatePdf()
        {
            using (MemoryStream ms = new MemoryStream()) {
                // step 1
                using (Document document = new Document(new Rectangle(850, 600))) {
                    // step 2
                    PdfWriter writer = PdfWriter.GetInstance(document, ms);
                    // step 3
                    document.Open();
                    // step 4
                    PdfContentByte canvas = writer.DirectContent;
                    // add the clipped image
                    Image img = Image.GetInstance(
                        Path.Combine(Utility.ResourceImage, RESOURCE)
                        );
                    float w = img.ScaledWidth;
                    float h = img.ScaledHeight;
                    canvas.Ellipse(1, 1, 848, 598);
                    canvas.Clip();
                    canvas.NewPath();
                    canvas.AddImage(img, w, 0, 0, h, 0, -600);

                    // Create a transparent PdfTemplate
                    PdfTemplate          t2         = writer.DirectContent.CreateTemplate(850, 600);
                    PdfTransparencyGroup transGroup = new PdfTransparencyGroup();
                    transGroup.Put(PdfName.CS, PdfName.DEVICEGRAY);
                    transGroup.Isolated = true;
                    transGroup.Knockout = false;
                    t2.Group            = transGroup;

                    // Add transparent ellipses to the template
                    int     gradationStep      = 30;
                    float[] gradationRatioList = new float[gradationStep];
                    for (int i = 0; i < gradationStep; i++)
                    {
/*
 * gotta love .NET, guess they forgot to copy java.lang.Math.toRadians
 */
                        double radians = (Math.PI / 180) * 90.0f / gradationStep * (i + 1);
                        gradationRatioList[i] = 1 - (float)Math.Sin(radians);
                    }
                    for (int i = 1; i < gradationStep + 1; i++)
                    {
                        t2.SetLineWidth(5 * (gradationStep + 1 - i));
                        t2.SetGrayStroke(gradationRatioList[gradationStep - i]);
                        t2.Ellipse(0, 0, 850, 600);
                        t2.Stroke();
                    }

                    // Create an image mask for the direct content
                    PdfDictionary maskDict = new PdfDictionary();
                    maskDict.Put(PdfName.TYPE, PdfName.MASK);
                    maskDict.Put(PdfName.S, new PdfName("Luminosity"));
                    maskDict.Put(new PdfName("G"), t2.IndirectReference);
                    PdfGState gState = new PdfGState();
                    gState.Put(PdfName.SMASK, maskDict);
                    canvas.SetGState(gState);

                    canvas.AddTemplate(t2, 0, 0);
                }
                return(ms.ToArray());
            }
        }
Ejemplo n.º 4
0
// ===========================================================================
        public void Write(Stream stream)
        {
            // step 1
            using (Document document = new Document()) {
                // step 2
                PdfWriter writer = PdfWriter.GetInstance(document, stream);
                // step 3
                document.Open();
                // step 4
                PdfContentByte cb  = writer.DirectContent;
                float          gap = (document.PageSize.Width - 400) / 3;

                PictureBackdrop(gap, 500, cb);
                PictureBackdrop(200 + 2 * gap, 500, cb);
                PictureBackdrop(gap, 500 - 200 - gap, cb);
                PictureBackdrop(200 + 2 * gap, 500 - 200 - gap, cb);

                PictureCircles(gap, 500, cb);
                cb.SaveState();
                PdfGState gs1 = new PdfGState();
                gs1.FillOpacity = 0.5f;
                cb.SetGState(gs1);
                PictureCircles(200 + 2 * gap, 500, cb);
                cb.RestoreState();

                cb.SaveState();
                PdfTemplate          tp    = cb.CreateTemplate(200, 200);
                PdfTransparencyGroup group = new PdfTransparencyGroup();
                tp.Group = group;
                PictureCircles(0, 0, tp);
                cb.SetGState(gs1);
                cb.AddTemplate(tp, gap, 500 - 200 - gap);
                cb.RestoreState();

                cb.SaveState();
                tp       = cb.CreateTemplate(200, 200);
                tp.Group = group;
                PdfGState gs2 = new PdfGState();
                gs2.FillOpacity = 0.5f;
                gs2.BlendMode   = PdfGState.BM_HARDLIGHT;
                tp.SetGState(gs2);
                PictureCircles(0, 0, tp);
                cb.AddTemplate(tp, 200 + 2 * gap, 500 - 200 - gap);
                cb.RestoreState();

                cb.ResetRGBColorFill();
                ColumnText ct = new ColumnText(cb);
                Phrase     ph = new Phrase("Ungrouped objects\nObject opacity = 1.0");
                ct.SetSimpleColumn(ph, gap, 0, gap + 200, 500, 18,
                                   Element.ALIGN_CENTER
                                   );
                ct.Go();

                ph = new Phrase("Ungrouped objects\nObject opacity = 0.5");
                ct.SetSimpleColumn(ph, 200 + 2 * gap, 0, 200 + 2 * gap + 200, 500,
                                   18, Element.ALIGN_CENTER
                                   );
                ct.Go();

                ph = new Phrase(
                    "Transparency group\nObject opacity = 1.0\nGroup opacity = 0.5\nBlend mode = Normal"
                    );
                ct.SetSimpleColumn(ph, gap, 0, gap + 200, 500 - 200 - gap, 18,
                                   Element.ALIGN_CENTER
                                   );
                ct.Go();

                ph = new Phrase(
                    "Transparency group\nObject opacity = 0.5\nGroup opacity = 1.0\nBlend mode = HardLight"
                    );
                ct.SetSimpleColumn(ph, 200 + 2 * gap, 0, 200 + 2 * gap + 200,
                                   500 - 200 - gap, 18, Element.ALIGN_CENTER
                                   );
                ct.Go();
            }
        }