Fonts and merging documents
This example was written in answer to the question Click How to create a PDF with font information and embed the actual font while merging the files into a single PDF?
mergeandaddfont
JAVA
JAVA
package sandbox.fonts;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfIndirectObject;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfNumber;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfSmartCopy;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.PdfStream;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.RandomAccessFile;
public class MergeAndAddFont {
public static final String FONT = "resources/fonts/GravitasOne.ttf";
public static final String[] FILE_A = {
"results/fonts/testA1.pdf", "results/fonts/testA2.pdf", "results/fonts/testA3.pdf"
};
public static final String[] FILE_B = {
"results/fonts/testB1.pdf", "results/fonts/testB2.pdf", "results/fonts/testB3.pdf"
};
public static final String[] FILE_C = {
"results/fonts/testC1.pdf", "results/fonts/testC2.pdf", "results/fonts/testC3.pdf"
};
public static final String[] CONTENT = {
"abcdefgh", "ijklmnopq", "rstuvwxyz"
};
public static final String MERGED_A1 = "results/fonts/testA_merged1.pdf";
public static final String MERGED_A2 = "results/fonts/testA_merged2.pdf";
public static final String MERGED_B1 = "results/fonts/testB_merged1.pdf";
public static final String MERGED_B2 = "results/fonts/testB_merged2.pdf";
public static final String MERGED_C1 = "results/fonts/testC_merged1.pdf";
public static final String MERGED_C2 = "results/fonts/testC_merged2.pdf";
public static void main(String[] args) throws DocumentException, IOException {
File file = new File(MERGED_A1);
file.getParentFile().mkdirs();
MergeAndAddFont app = new MergeAndAddFont();
for (int i = 0; i < FILE_A.length; i++) {
app.createPdf(FILE_A[i], CONTENT[i], true, true);
}
app.mergeFiles(FILE_A, MERGED_A1,false);
app.mergeFiles(FILE_A, MERGED_A2, true);
for (int i = 0; i < FILE_B.length; i++) {
app.createPdf(FILE_B[i], CONTENT[i], true, false);
}
app.mergeFiles(FILE_B, MERGED_B1,false);
app.mergeFiles(FILE_B, MERGED_B2, true);
for (int i = 0; i < FILE_C.length; i++) {
app.createPdf(FILE_C[i], CONTENT[i], false, false);
}
app.mergeFiles(FILE_C, MERGED_C1, true);
app.embedFont(MERGED_C1, FONT, MERGED_C2);
}
public void createPdf(String filename, String text, boolean embedded, boolean subset) throws DocumentException, IOException {
// step 1
Document document = new Document();
// step 2
PdfWriter.getInstance(document, new FileOutputStream(filename));
// step 3
document.open();
// step 4
BaseFont bf = BaseFont.createFont(FONT, BaseFont.WINANSI, embedded);
bf.setSubset(subset);
Font font = new Font(bf, 12);
document.add(new Paragraph(text, font));
// step 5
document.close();
}
public void mergeFiles(String[] files, String result, boolean smart) throws IOException, DocumentException {
Document document = new Document();
PdfCopy copy;
if (smart)
copy = new PdfSmartCopy(document, new FileOutputStream(result));
else
copy = new PdfCopy(document, new FileOutputStream(result));
document.open();
PdfReader[] reader = new PdfReader[3];
for (int i = 0; i < files.length; i++) {
reader[i] = new PdfReader(files[i]);
copy.addDocument(reader[i]);
copy.freeReader(reader[i]);
reader[i].close();
}
document.close();
}
private void embedFont(String merged, String fontfile, String result) throws IOException, DocumentException {
// the font file
RandomAccessFile raf = new RandomAccessFile(fontfile, "r");
byte fontbytes[] = new byte[(int)raf.length()];
raf.readFully(fontbytes);
raf.close();
// create a new stream for the font file
PdfStream stream = new PdfStream(fontbytes);
stream.flateCompress();
stream.put(PdfName.LENGTH1, new PdfNumber(fontbytes.length));
// create a reader object
PdfReader reader = new PdfReader(merged);
int n = reader.getXrefSize();
PdfObject object;
PdfDictionary font;
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(result));
PdfName fontname = new PdfName(BaseFont.createFont(fontfile, BaseFont.WINANSI, BaseFont.NOT_EMBEDDED).getPostscriptFontName());
for (int i = 0; i < n; i++) {
object = reader.getPdfObject(i);
if (object == null || !object.isDictionary())
continue;
font = (PdfDictionary)object;
if (PdfName.FONTDESCRIPTOR.equals(font.get(PdfName.TYPE))
&& fontname.equals(font.get(PdfName.FONTNAME))) {
PdfIndirectObject objref = stamper.getWriter().addToBody(stream);
font.put(PdfName.FONTFILE2, objref.getIndirectReference());
}
}
stamper.close();
reader.close();
}
}