I'm trying to mimic the behavior of the Acrobat JS call doc.importIcon() using PDF Box to import an larger number of images as icons into a PDF document.
I've already created and added an PDAppearanceStream to the AP Dictionary.
Unfortunately the Icon is not accessible through doc.getIcon() JS call later in the PDF JS.
Maybe someone of you had the same problem. I guess I'm missing just a small piece here.
My current code looks like this:
PDDocumentCatalog docCatalog = document.getDocumentCatalog();
PDDocumentNameDictionary nameDict = docCatalog.getNames();
COSDictionary dic = nameDict.getCOSObject().getCOSDictionary(COSName.AP);
COSArray names = (COSArray) dic.getDictionaryObject(COSName.NAMES);
PDImageXObject imgNeu = PDImageXObject.createFromFileByContent(new File("C:\\FancyPicture.jpg"), document);
float width = imgNeu.getWidth();
float height = imgNeu.getHeight();
PDAppearanceStream pdAppearanceStream = new PDAppearanceStream(document);
pdAppearanceStream.setResources(new PDResources());
try (PDPageContentStream pdPageContentStream = new PDPageContentStream(document, pdAppearanceStream))
{
pdPageContentStream.drawImage(imgNeu, 0, 0, width, height);
}
pdAppearanceStream.setBBox(new PDRectangle(width, height));
pdAppearanceStream.setFormType(1);
COSArray defaultRes = new COSArray();
defaultRes.add(COSName.getPDFName("PDF"));
defaultRes.add(COSName.getPDFName("ImageC"));
pdAppearanceStream.getResources().getCOSObject().setItem(COSName.PROC_SET, defaultRes);
Matrix mat = new Matrix(1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f);
pdAppearanceStream.setMatrix(mat.createAffineTransform());
COSDictionary strDic = pdAppearanceStream.getCOSObject();
strDic.setString(COSName.NAME, "FRM");
COSString key = new COSString("img_01");
names.add(key.getCOSObject());
names.add(pdAppearanceStream.getCOSObject());
It turns out as if the JS runtime within Acrobat requires the COSString elems encoded as UTF-16 incl. Byte order mark
After proper encoding of the icon names and using COSString(byte[]) everything works as expected.
Related
I'm trying to take pages from one PDF, scale them down, and put them side-by-side in another PDF. To do this I make an intermediate PDF that has all of the pages from the source scaled down to the size I need to place them side-by-side. Then I go thought the scaled PDF and copy the pages two at a time to the final PDF. My thinking is that I'm down with the scaled PDF so I can close it but when I do that I get an error trying to save the final PDF that says
COSStream has been closed and cannot be read. Perhaps its enclosing PDDocument has been closed?
I'm not sure why the intermediate doc should matter when I try to save the final doc. It could be that I'm doing something wrong in the copying of pages? Here's the code I use for that:
private PDDocument sideBySide(PaperSize paperSize, PaperSize pageSize) throws IOException {
PDRectangle targetPaperSize = getRect(paperSize);
PDRectangle targetPageSize = getRect(pageSize);
PDDocument scaledDoc = scaleDoc(pageSize, doc);
PDDocument outputDoc = new PDDocument();
final double theta = Math.PI / 2;
for (int offset = 0; offset < scaledDoc.getNumberOfPages() - 1; offset+=2) {
PDPage twoUp = new PDPage(targetPaperSize);
twoUp.setRotation(90);
twoUp.setResources(new PDResources());
outputDoc.addPage(twoUp);
PDPage leftPage = scaledDoc.getPage(offset);
PDPage rightPage = scaledDoc.getPage(offset + 1);
PDFormXObject leftObject = importAsXObject(outputDoc, leftPage);
twoUp.getResources().add(leftObject);
PDFormXObject rightObject = importAsXObject(outputDoc, rightPage);
twoUp.getResources().add(rightObject);
PDPageContentStream content = new PDPageContentStream(outputDoc, twoUp);
AffineTransform leftTrans = AffineTransform.getRotateInstance(theta);
leftTrans.concatenate(AffineTransform.getTranslateInstance(0, -targetPageSize.getHeight()));
AffineTransform rightTrans = AffineTransform.getRotateInstance(theta);
rightTrans.concatenate(AffineTransform.getTranslateInstance(targetPageSize.getWidth(), -targetPageSize.getHeight()));
leftObject.setMatrix(leftTrans);
rightObject.setMatrix(rightTrans);
content.drawForm(leftObject);
content.drawForm(rightObject);
content.close();
}
scaledDoc.close();
return outputDoc;
}
My goal is stamp an image on a 3D PDF that behaves like a watermark (end-user cannot select, edit, resize, or delete the image).
I tried making an Annotation as shown below, but the image ("ClassificationBlock.png" in Resources) can be resized and deleted on the output PDF. Is that an inherent behavior of "PdfAnnotation" rectangles or is there a property I can define that will keep the image essentially read-only?
using (PdfStamper stamp = new PdfStamper(reader, fs))
.
.
.
Rectangle stampRect2 = null;
System.Drawing.Image imageBTM2 = System.Drawing.Image.FromHbitmap(Properties.Resources.ClassificationBlock.GetHbitmap());
Image stampImage2 = iTextSharp.text.Image.GetInstance(imageBTM2, System.Drawing.Imaging.ImageFormat.Png);
Rectangle location2 = new Rectangle(0, 0, stampImage2.Width, stampImage2.Height);
PdfAnnotation pdfStamp2 = PdfAnnotation.CreateStamp(stamp.Writer, location2, null, "ImageText");
stampImage2.SetAbsolutePosition(0, 0);
PdfAppearance app2 = stamp.GetOverContent(1).CreateAppearance(stampImage2.Width, stampImage2.Height);
app2.AddImage(stampImage2);
pdfStamp2.SetAppearance(PdfName.N, app2);
pdfStamp2.SetPage();
stamp.AddAnnotation(pdfStamp2, 1);
stampRect2 = location2;
stamp.FormFlattening = true;
stamp.Close();
reader.Close();
fs.Close();
I've also tried it by mimicking another user's attempt at watermark text via pdfContentBytes, but I can't get the image to even display on the PDF.
stamp.FormFlattening = false;
iTextSharp.text.Rectangle pageRectangle = reader.GetPageSizeWithRotation(1);
PdfContentByte pdfData = stamp.GetOverContent(1);
pdfData.SetFontAndSize(BaseFont.CreateFont(BaseFont.HELVETICA_BOLD, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 10);
PdfGState graphicsState = new PdfGState();
graphicsState.FillOpacity = 0.5F;
pdfData.SetGState(graphicsState);
pdfData.BeginText();
System.Drawing.Image imageBTM2 = System.Drawing.Image.FromHbitmap(Properties.Resources.TEKLAPDF_InstructionBlock.GetHbitmap());
iTextSharp.text.Image stampImage2 = iTextSharp.text.Image.GetInstance(imageBTM2, System.Drawing.Imaging.ImageFormat.Png);
float width = pageRectangle.Width;
float height = pageRectangle.Height;
stampImage2.ScaleToFit(width, height);
stampImage2.SetAbsolutePosition(width / 2 - stampImage2.Width / 2, height / 2 - stampImage2.Height / 2);
stampImage2.SetAbsolutePosition(50, 50);
stampImage2.Rotation = 0;
pdfData.AddImage(stampImage2);
pdfData.EndText();
Any ideas on how best to accomplish this? This is driving me crazy.
EDIT*****************************
These are the current avenues I've pursued. Any ideas on how to "watermark" the 3D PDF?
//Stamp Image Method (works on 2D PDF and 3D PDF BUT results in EDITABLE stamp)
System.Drawing.Image imageBTM2 = System.Drawing.Image.FromHbitmap(Properties.Resources.ClassificationBlock.GetHbitmap());
Image stampImage2 = iTextSharp.text.Image.GetInstance(imageBTM2, System.Drawing.Imaging.ImageFormat.Png);
Rectangle stampRect2 = null;
Rectangle location2 = new Rectangle(0, 0, stampImage2.Width, stampImage2.Height);
PdfAnnotation pdfStamp2 = PdfAnnotation.CreateStamp(stamp.Writer, location2, null, "ImageText");
stampImage2.SetAbsolutePosition(0, 0);
PdfAppearance app2 = stamp.GetUnderContent(1).CreateAppearance(stampImage2.Width, stampImage2.Height);
app2.AddImage(stampImage2);
pdfStamp2.SetAppearance(PdfName.N, app2);
pdfStamp2.SetPage();
stamp.AddAnnotation(pdfStamp2, 1);
stampRect2 = location2;
//Watermark Layering Method (works only on 2D PDF)
var layers = stamp.GetPdfLayers();
var imgLayer = new PdfLayer("StackoverflowImage", stamp.Writer);
PdfContentByte cb = stamp.GetUnderContent(1);
cb.BeginLayer(imgLayer);
stampImage2.ScalePercent(100f);
stampImage2.SetAbsolutePosition(pageWidth/2, pageHeight/2);
cb.AddImage(stampImage2);
cb.EndLayer();
//Jan's Watermark method (works only on 2D PDF)
PdfContentByte over = stamp.GetOverContent(1);
stampImage2.SetAbsolutePosition(pageWidth / 2, pageHeight / 2);
PdfLayer imgLayer = new PdfLayer("StackoverflowImage", stamp.Writer);
imgLayer.OnPanel = false;
over.BeginLayer(imgLayer);
over.AddImage(stampImage2);
over.EndLayer();
stamp.Close();
reader.Close();
First off: You most likely cannot prevent selection of the image.
Second: I do itext in Java, so you'll probably end up uppercasing first character of method names...
For the remainder or your question you could try to add this image to a layer:
PdfContentByte over = stamp.getOverContent(1)
Image img = ...//code to get your image;
img.setAbsolutePosition(x, y); //at your postion
PdfLayer imgLayer = new PdfLayer("StackoverflowImage", stamper.getWriter());
imgLayer.setOnPanel(false);
over.beginLayer(imgLayer);
over.addImage(img);
over.endLayer();
SOLVED! Using the "Stamp Image Method" as described above, I just needed to change the properties of the stamp itself (changing FLAGS to LOCKED and READ-ONLY). This results in a stamp that is above the 3D PDF layer AND cannot be resized, edited, or deleted. So the code is now:
//Stamp Image Method
System.Drawing.Image imageBTM2 = System.Drawing.Image.FromHbitmap(Properties.Resources.ClassificationBlock.GetHbitmap());
Image stampImage2 = iTextSharp.text.Image.GetInstance(imageBTM2, System.Drawing.Imaging.ImageFormat.Png);
Rectangle stampRect2 = null;
Rectangle location2 = new Rectangle(0, 0, stampImage2.Width, stampImage2.Height);
PdfAnnotation pdfStamp2 = PdfAnnotation.CreateStamp(stamp.Writer, location2, null, "ImageText");
pdfStamp2.Flags = iTextSharp.text.pdf.PdfAnnotation.FLAGS_LOCKED;
pdfStamp2.Flags = iTextSharp.text.pdf.PdfAnnotation.FLAGS_READONLY;
stampImage2.SetAbsolutePosition(0, 0);
PdfAppearance app2 = stamp.GetUnderContent(1).CreateAppearance(stampImage2.Width, stampImage2.Height);
app2.AddImage(stampImage2);
pdfStamp2.SetAppearance(PdfName.N, app2);
pdfStamp2.SetPage();
stamp.AddAnnotation(pdfStamp2, 1);
stampRect2 = location2;
Requirement:
A large image (dynamic) needs to be split and shown in PDF pages. If image can't be accomodated in one page then we need to add another page and try to fit the remaining portion and so on.
So far I am able to split the image in multiple pages, however it appears that they are completely ignoring the margin values and so images are shown without any margins.
Please see below code:
string fileStringReplace = imageByteArray.Replace("data:image/jpeg;base64,", "");
Byte[] imageByte = Convert.FromBase64String(fileStringReplace);
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageByte);
float w = image.ScaledWidth;
float h = image.ScaledHeight;
float cropHeight = 1500f;
iTextSharp.text.Rectangle page = new iTextSharp.text.Rectangle(1150f, cropHeight);
var x = page.Height;
Byte[] created;
iTextSharp.text.Document document = new iTextSharp.text.Document(page, 20f, 20f, 20f, 40f); --This has no impact
using (var outputMemoryStream = new MemoryStream())
{
PdfWriter writer = PdfWriter.GetInstance(document, outputMemoryStream);
writer.CloseStream = false;
document.Open();
PdfContentByte canvas = writer.DirectContentUnder;
float usedHeights = h;
while (usedHeights >= 0)
{
usedHeights -= cropHeight;
document.SetPageSize(new iTextSharp.text.Rectangle(1150f, cropHeight));
canvas.AddImage(image, w, 0, 0, h, 0, -usedHeights);
document.NewPage();
}
document.Close();
created = outputMemoryStream.ToArray();
outputMemoryStream.Write(created, 0, created.Length);
outputMemoryStream.Position = 0;
}
return created;
I also tried to set margin in the loop by document.SetMargins() - but that's not working.
You are mixing different things.
When you create margins, be it while constructing the Document instance or by using the setMargins() method, you create margins for when you let iText(Sharp) decide on the layout. That is: the margins will be respected when you do something like document.Add(image).
However, you do not allow iText to create the layout. You create a PdfContentByte named canvas and you decide to add the image to that canvas using a transformation matrix. This means that you will calculate the a, b, c, d, e, and f value needed for the AddImage() method.
You are supposed to do that Math. If you want to see a margin, then the values w, 0, 0, h, 0, and -usedHeights are wrong, and you shouldn't blame iTextSharp, you should blame your lack of insight in analytical geometrics (that's the stuff you learn in high school at the age of 16).
This might be easier for you:
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageByte);
float w = image.ScaledWidth;
float h = image.ScaledHeight;
// For the sake of simplicity, I don't crop the image, I just add 20 user units
iTextSharp.text.Rectangle page = new iTextSharp.text.Rectangle(w + 20, h + 20);
iTextSharp.text.Document document = new iTextSharp.text.Document(page);
PdfWriter writer = PdfWriter.GetInstance(document, outputMemoryStream);
// Please drop the line that prevents closing the output stream!
// Why are so many people making this mistake?
// Who told you you shouldn't close the output stream???
document.Open();
// We define an absolute position for the image
// it will leave a margin of 10 to the left and to the bottom
// as we created a page that is 20 user units to wide and to high,
// we will also have a margin of 10 to the right and to the top
img.SetAbsolutePosition(10, 10);
document.Add(Image);
document.Close();
Note that SetAbsolutePosition() also lets you take control, regardless of the margins, as an alternative, you could use:
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageByte);
float w = image.ScaledWidth;
float h = image.ScaledHeight;
// For the sake of simplicity, I don't crop the image, I just add 20 user units
iTextSharp.text.Rectangle page = new iTextSharp.text.Rectangle(w + 20, h + 20);
iTextSharp.text.Document document = new iTextSharp.text.Document(page, 10, 10, 10, 10);
PdfWriter writer = PdfWriter.GetInstance(document, outputMemoryStream);
// Please drop the line that prevents closing the output stream!
// Why are so many people making this mistake?
// Who told you you shouldn't close the output stream???
document.Open();
// We add the image to the document, and we let iTextSharp decide where to put it
// As there is just sufficient space to fit the image inside the page, it should fit,
// But be aware of the existence of a leading; that could create side-effects
// such as forwarding the image to the next page because it doesn't fit vertically
document.Add(Image);
document.Close();
I am trying to generate the barcode from barcode4j library(code128bean, other barcode beans) and try to add to the existing pdf. The barcode image is getting created locally using the below code.
//Create the barcode bean
Code128Bean code128Bean = new Code128Bean();
final int dpi = 150;
code128Bean.setModuleWidth(UnitConv.in2mm(1.0f / dpi)); //makes the narrow bar
//width exactly one pixel
//bean.setCodeset(2);
code128Bean.doQuietZone(false);
//Open output file
File outputFile = new File("D:/barcode4jcod128.png"); //I dont want to create it
OutputStream code128Stream = new FileOutputStream(outputFile);
try {
//Set up the canvas provider for monochrome PNG output
BitmapCanvasProvider canvas1 = new BitmapCanvasProvider(
code128Stream, "image/x-png", dpi, BufferedImage.TYPE_BYTE_BINARY, false, 0);
//Generate the barcode
code128Bean.generateBarcode(canvas1, "123456");
//Signal end of generation
canvas1.finish();
} finally {
code128Stream.close();
}
My problem is I don't want to create an image and save it locally in filesystem and then add it as image to pdf. I just want to create dynamically i mean just create the barcode image dynamically and add it to the pdf.
How do I set the pagesize (like PDPage.PAGE_SIZE_A4) to the existing PDPages which I retrieved from catalog.getAllPages() method, like (List<PDPage> pages = catalog.getAllPages();)
Can somebody help on this?
Thank you so much for your help Tilman. Here is what i did
public static BufferedImage geBufferedImageForCode128Bean(String barcodeString) {
Code128Bean code128Bean = new Code128Bean();
final int dpi = 150;
code128Bean.setModuleWidth(UnitConv.in2mm(1.0f / dpi)); //makes the narrow bar
code128Bean.doQuietZone(false);
BitmapCanvasProvider canvas1 = new BitmapCanvasProvider(
dpi, BufferedImage.TYPE_BYTE_BINARY, false, 0
);
//Generate the barcode
code128Bean.generateBarcode(canvas1, barcodeString);
return canvas1.getBufferedImage();
}
// main code
PDDocument finalDoc = new PDDocument();
BufferedImage bufferedImage = geBufferedImageForCode128Bean("12345");
PDXObjectImage pdImage = new PDPixelMap(doc, bufferedImage);
PDPageContentStream contentStream = new PDPageContentStream(
finalDoc, pdPage, true, true, true
);
contentStream.drawXObject(pdImage, 100, 600, 50, 20);
contentStream.close();
finalDoc.addPage(pdPage);
finalDoc.save(new File("D:/Test75.pdf"));
The barcode is getting created the but it is created in vertical manner. i would like to see in horizontal manner. Thanks again for your help.
1) add an image to an existing page while keeping the content:
BitmapCanvasProvider canvas1 = new BitmapCanvasProvider(
dpi, BufferedImage.TYPE_BYTE_BINARY, false, 0
);
code128Bean.generateBarcode(canvas1, "123456");
canvas1.finish();
BufferedImage bim = canvas1.getBufferedImage();
PDXObjectImage img = new PDPixelMap(doc, bim);
PDPageContentStream contents = new PDPageContentStream(doc, page, true, true, true);
contents.drawXObject(img, 100, 600, bim.getWidth(), bim.getHeight());
contents.close();
2) set the media box to A4 on an existing page:
page.setMediaBox(PDPage.PAGE_SIZE_A4);
I can watermark any PDF already, and the images inside, everything ok, but now I need the watermark only showing up when the PDF is printed... Is this possible? How?
I need to do this programmatically of course.
For future readers, this is possible to do by wrapping the watermark in a PDF layer (Optional Content Group), then configuring the Usage attribute of this layer as Print-Only. See the PDF Reference Document, Chapter 4-Graphics, part 4.10-Optional Content for more details.
Specifically, using itextsharp, I was able to get it working with the following, specifically - pdf version 1.7, and SetPrint("Watermark",true)
string oldfile = #"c:\temp\oldfile.pdf";
string newFile = #"c:\temp\newfile.pdf";
PdfReader pdfReaderS = new PdfReader(oldfile);
Document document = new Document(pdfReaderS.GetPageSizeWithRotation(1));
PdfWriter pdfWriterD = PdfWriter.GetInstance(document, new FileStream(newFile, FileMode.Create, FileAccess.Write));
pdfWriterD.SetPdfVersion(PdfWriter.PDF_VERSION_1_7);
document.Open();
PdfContentByte pdfContentByteD = pdfWriterD.DirectContent;
BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
int n = pdfReaderS.NumberOfPages;
string text = "UNCONTROLLED";
for (int i = 1; i <= n; i++)
{
iTextSharp.text.Rectangle pageSizeS = pdfReaderS.GetPageSizeWithRotation(i);
float pageWidth = pageSizeS.Width / 2;
float pageheight = pageSizeS.Height / 2;
document.SetPageSize(pageSizeS);
document.NewPage();
PdfImportedPage pdfImportedPage = pdfWriterD.GetImportedPage(pdfReaderS, i);
PdfLayer layer1 = new PdfLayer("Watermark", pdfWriterD);
layer1.SetPrint("Watermark", true);
layer1.View = false;
layer1.On = false;
layer1.OnPanel = false;
pdfContentByteD.BeginLayer(layer1);
pdfContentByteD.SetColorFill(BaseColor.RED);
pdfContentByteD.SetFontAndSize(bf, 30);
ColumnText.ShowTextAligned(pdfContentByteD, Element.ALIGN_CENTER, new Phrase(text), 300, 700, 0);
pdfContentByteD.EndLayer();
pdfContentByteD.AddTemplate(pdfImportedPage, 0, 0);//, 0, 1, 0, 0);
}
document.Close();
pdfReaderS.Close();
You should probably make use of the fact that the screen uses RGB and the printer CMYK. You should be able to create two colors in CMYK that map to the same RGB value. This is of course not enough against a determined specialist.
The bOnScreen parameter determines whether the watermark will be displayed when the PDF is viewed on the computer screen, and bOnPrint determines whether it will be displayed when the PDF is printed.
-- https://acrobatusers.com/tutorials/watermarking-a-pdf-with-javascript