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Colored text

ColoredLetters.java
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/*
    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
 */
/**
 * Example written by Bruno Lowagie in answer to:
 * http://stackoverflow.com/questions/27080565/itext-make-a-single-letter-bold-within-a-word
 */
package com.itextpdf.samples.sandbox.objects;
 
import com.itextpdf.io.font.constants.StandardFonts;
import com.itextpdf.kernel.colors.ColorConstants;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.element.Text;
 
import java.io.File;
import java.io.IOException;
 
public class ColoredLetters {
    public static final String DEST = "./target/sandbox/objects/colored_letters.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new ColoredLetters().manipulatePdf(DEST);
    }
 
    protected void manipulatePdf(String dest) throws IOException {
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
        Document doc = new Document(pdfDoc);
 
        PdfFont helveticaFont = PdfFontFactory.createFont(StandardFonts.HELVETICA);
        PdfFont helveticaBoldFont = PdfFontFactory.createFont(StandardFonts.HELVETICA_BOLD);
 
        Paragraph p = new Paragraph();
        String s = "all text is written in red, except the letters b and g; they are written in blue and green.";
        for (int i = 0; i < s.length(); i++) {
            p.add(returnCorrectColor(s.charAt(i), helveticaFont, helveticaBoldFont));
        }
        doc.add(p);
 
        doc.close();
    }
 
    private static Text returnCorrectColor(char letter, PdfFont helveticaFont, PdfFont helveticaBoldFont) {
        if (letter == 'b') {
            return new Text("b")
                    .setFontColor(ColorConstants.BLUE)
                    .setFont(helveticaBoldFont);
        } else if (letter == 'g') {
            return new Text("g")
                    .setFontColor(ColorConstants.GREEN)
                    .setFont(helveticaFont)
                    .setItalic();
        } else {
            return new Text(String.valueOf(letter))
                    .setFontColor(ColorConstants.RED)
                    .setFont(helveticaFont);
        }
    }
}
ColoredText.java
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/*
    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
 */
/**
 * Example written by Bruno Lowagie in answer to:
 * http://stackoverflow.com/questions/27578497/applying-color-to-strings-in-paragraph-using-itext
 */
package com.itextpdf.samples.sandbox.objects;
 
import com.itextpdf.io.font.constants.StandardFonts;
import com.itextpdf.kernel.colors.ColorConstants;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.canvas.PdfCanvas;
import com.itextpdf.layout.Canvas;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.element.Text;
 
import java.io.File;
import java.io.IOException;
 
public class ColoredText {
    public static final String DEST = "./target/sandbox/objects/colored_text.pdf";
 
    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();
        new ColoredText().manipulatePdf(DEST);
    }
 
    protected void manipulatePdf(String dest) throws IOException {
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
        Document doc = new Document(pdfDoc);
 
        Text redText = new Text("This text is red. ")
                .setFontColor(ColorConstants.RED)
                .setFont(PdfFontFactory.createFont(StandardFonts.HELVETICA));
        Text blueText = new Text("This text is blue and bold. ")
                .setFontColor(ColorConstants.BLUE)
                .setFont(PdfFontFactory.createFont(StandardFonts.HELVETICA_BOLD));
        Text greenText = new Text("This text is green and italic. ")
                .setFontColor(ColorConstants.GREEN)
                .setFont(PdfFontFactory.createFont(StandardFonts.HELVETICA_OBLIQUE));
 
        Paragraph p1 = new Paragraph(redText).setMargin(0);
        doc.add(p1);
        Paragraph p2 = new Paragraph().setMargin(0);
        p2.add(blueText);
        p2.add(greenText);
        doc.add(p2);
 
        new Canvas(new PdfCanvas(pdfDoc.getLastPage()), pdfDoc, new Rectangle(36, 600, 108, 160))
                .add(p1)
                .add(p2);
 
        doc.close();
    }
}
ColoredLetters.cs
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/*
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.IO;
using iText.IO.Font.Constants;
using iText.Kernel.Colors;
using iText.Kernel.Font;
using iText.Kernel.Pdf;
using iText.Layout;
using iText.Layout.Element;
 
namespace iText.Samples.Sandbox.Objects
{
    public class ColoredLetters
    {
        public static readonly string DEST = "results/sandbox/objects/colored_letters.pdf";
 
        public static void Main(string[] args)
        {
            FileInfo file = new FileInfo(DEST);
            file.Directory.Create();
            new ColoredLetters().ManipulatePdf(DEST);
        }
 
        protected void ManipulatePdf(string dest)
        {
            PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
            Document doc = new Document(pdfDoc);
 
            PdfFont helveticaFont = PdfFontFactory.CreateFont(StandardFonts.HELVETICA);
            PdfFont helveticaBoldFont = PdfFontFactory.CreateFont(StandardFonts.HELVETICA_BOLD);
 
            Paragraph p = new Paragraph();
            string s = "all text is written in red, except the letters b and g; they are written in blue and green.";
            for (int i = 0; i < s.Length; i++)
            {
                p.Add(ReturnCorrectColor(s[i], helveticaFont, helveticaBoldFont));
            }
 
            doc.Add(p);
 
            doc.Close();
        }
 
        private static Text ReturnCorrectColor(char letter, PdfFont helveticaFont, PdfFont helveticaBoldFont)
        {
            if (letter == 'b')
            {
                return new Text("b")
                    .SetFontColor(ColorConstants.BLUE)
                    .SetFont(helveticaBoldFont);
            }
            else if (letter == 'g')
            {
                return new Text("g")
                    .SetFontColor(ColorConstants.GREEN)
                    .SetFont(helveticaFont)
                    .SetItalic();
            }
            else
            {
                return new Text(letter.ToString())
                    .SetFontColor(ColorConstants.RED)
                    .SetFont(helveticaFont);
            }
        }
    }
}
ColoredText.cs
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/*
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.IO;
using iText.IO.Font.Constants;
using iText.Kernel.Colors;
using iText.Kernel.Font;
using iText.Kernel.Geom;
using iText.Kernel.Pdf;
using iText.Kernel.Pdf.Canvas;
using iText.Layout;
using iText.Layout.Element;
 
namespace iText.Samples.Sandbox.Objects
{
    public class ColoredText
    {
        public static readonly string DEST = "results/sandbox/objects/colored_text.pdf";
 
        public static void Main(string[] args)
        {
            FileInfo file = new FileInfo(DEST);
            file.Directory.Create();
            new ColoredText().ManipulatePdf(DEST);
        }
 
        protected void ManipulatePdf(string dest)
        {
            PdfDocument pdfDoc = new PdfDocument(new PdfWriter(dest));
            Document doc = new Document(pdfDoc);
 
            Text redText = new Text("This text is red. ")
                .SetFontColor(ColorConstants.RED)
                .SetFont(PdfFontFactory.CreateFont(StandardFonts.HELVETICA));
            Text blueText = new Text("This text is blue and bold. ")
                .SetFontColor(ColorConstants.BLUE)
                .SetFont(PdfFontFactory.CreateFont(StandardFonts.HELVETICA_BOLD));
            Text greenText = new Text("This text is green and italic. ")
                .SetFontColor(ColorConstants.GREEN)
                .SetFont(PdfFontFactory.CreateFont(StandardFonts.HELVETICA_OBLIQUE));
 
            Paragraph p1 = new Paragraph(redText).SetMargin(0);
            doc.Add(p1);
            Paragraph p2 = new Paragraph().SetMargin(0);
            p2.Add(blueText);
            p2.Add(greenText);
            doc.Add(p2);
 
            new Canvas(new PdfCanvas(pdfDoc.GetLastPage()), pdfDoc, new Rectangle(36, 600, 108, 160))
                .Add(p1)
                .Add(p2);
 
            doc.Close();
        }
    }
}

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



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