iText pdf library
Website search

Reuse a font from an existing PDF

ReuseFont.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
    Authors: iText Software.
 
    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
/**
 * This example is based on an answer given on StackOverflow:
 * http://stackoverflow.com/questions/22186014/itextsharp-re-use-font-embedded-in-acrofield
 */
package com.itextpdf.samples.sandbox.acroforms;
 
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.pdf.PdfDictionary;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfName;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
 
import java.io.File;
import java.io.IOException;
 
public class ReuseFont {
    public static final String DEST = "./target/sandbox/acroforms/reuse_font.pdf";
 
    public static final String SRC = "./src/test/resources/pdfs/form.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
 
        new ReuseFont().manipulatePdf(DEST);
    }
 
    /*
     * Method searches and returns font object by the passed font name.
     */
    public PdfFont findFontInForm(PdfDocument pdfDoc, PdfName fontName) throws IOException {
        PdfDictionary acroformDict = pdfDoc.getCatalog().getPdfObject().getAsDictionary(PdfName.AcroForm);
        if (acroformDict == null) {
            return null;
        }
 
        PdfDictionary dr = acroformDict.getAsDictionary(PdfName.DR);
        if (dr == null) {
            return null;
        }
 
        PdfDictionary font = dr.getAsDictionary(PdfName.Font);
        if (font == null) {
            return null;
        }
 
        for (PdfName key : font.keySet()) {
            if (key.equals(fontName)) {
                return PdfFontFactory.createFont(font.getAsDictionary(key));
            }
        }
 
        return null;
    }
 
    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(dest));
 
        PdfFont font = findFontInForm(pdfDoc, new PdfName("Calibri"));
 
        PdfCanvas canvas = new PdfCanvas(pdfDoc.getFirstPage());
        canvas.beginText();
        canvas.setFontAndSize(font, 13);
        canvas.moveText(36, 806);
        canvas.showText("Some text in Calibri");
        canvas.endText();
        canvas.stroke();
 
        pdfDoc.close();
    }
}

Resources

ReuseFont.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2020 iText Group NV
Authors: iText Software.
 
For more information, please contact iText Software at this address:
sales@itextpdf.com
*/
 
using System;
using System.IO;
using iText.Kernel.Font;
using iText.Kernel.Pdf;
using iText.Kernel.Pdf.Canvas;
 
namespace iText.Samples.Sandbox.Acroforms
{
    public class ReuseFont
    {
        public static readonly String DEST = "results/sandbox/acroforms/reuse_font.pdf";
 
        public static readonly String SRC = "../../../resources/pdfs/form.pdf";
 
        public static void Main(String[] args)
        {
            FileInfo file = new FileInfo(DEST);
            file.Directory.Create();
 
            new ReuseFont().ManipulatePdf(DEST);
        }
 
        // Method searches and returns font object by the passed font name.
        public PdfFont FindFontInForm(PdfDocument pdfDoc, PdfName fontName)
        {
            PdfDictionary acroForm = pdfDoc.GetCatalog().GetPdfObject().GetAsDictionary(PdfName.AcroForm);
            if (acroForm == null)
            {
                return null;
            }
 
            PdfDictionary dr = acroForm.GetAsDictionary(PdfName.DR);
            if (dr == null)
            {
                return null;
            }
 
            PdfDictionary font = dr.GetAsDictionary(PdfName.Font);
            if (font == null)
            {
                return null;
            }
 
            foreach (PdfName key in font.KeySet())
            {
                if (key.Equals(fontName))
                {
                    return PdfFontFactory.CreateFont(font.GetAsDictionary(key));
                }
            }
 
            return null;
        }
 
        protected void ManipulatePdf(String dest)
        {
            PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(dest));
 
            PdfFont font = FindFontInForm(pdfDoc, new PdfName("Calibri"));
 
            PdfCanvas canvas = new PdfCanvas(pdfDoc.GetFirstPage());
            canvas.BeginText();
            canvas.SetFontAndSize(font, 13);
            canvas.MoveText(36, 806);
            canvas.ShowText("Some text in Calibri");
            canvas.EndText();
            canvas.Stroke();
 
            pdfDoc.Close();
        }
    }
}

Click the following link to see the legacy example for iText 5. Except for security fixes, iText 5 is no longer being developed.



Contact

Still have questions? 

We're happy to answer your questions. Reach out to us and we'll get back to you shortly.

Contact us
Stay updated

Join 11,000+ subscribers and become an iText PDF expert by staying up to date with our new products, updates, tips, technical solutions and happenings.

Subscribe Now