Filling out forms

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 Apryse Group NV
    Authors: Apryse Software.

    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
package com.itextpdf.samples.sandbox.acroforms;

import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormCreator;
import com.itextpdf.io.font.PdfEncodings;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;

import java.io.File;

public class FillFormSpecialChars {
    public static final String DEST = "./target/sandbox/acroforms/fill_form_special_chars.pdf";

    public static final String FONT = "./src/main/resources/font/FreeSans.ttf";
    public static final String SRC = "./src/main/resources/pdfs/test.pdf";

    // ěščřžýáíé characters
    public static final String VALUE = "\u011b\u0161\u010d\u0159\u017e\u00fd\u00e1\u00ed\u00e9";

    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();

        new FillFormSpecialChars().manipulatePdf(DEST);
    }

    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(dest));
        PdfAcroForm form = PdfFormCreator.getAcroForm(pdfDoc, true);

        // Being set as true, this parameter is responsible to generate an appearance Stream
        // while flattening for all form fields that don't have one. Generating appearances will
        // slow down form flattening, but otherwise Acrobat might render the pdf on its own rules.
        form.setGenerateAppearance(true);

        PdfFont font = PdfFontFactory.createFont(FONT, PdfEncodings.IDENTITY_H);
        form.getField("test").setValue(VALUE, font, 12f);
        form.getField("test2").setValue(VALUE, font, 12f);

        pdfDoc.close();
    }
}

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 Apryse Group NV
    Authors: Apryse Software.

    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
package com.itextpdf.samples.sandbox.acroforms;

import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormCreator;
import com.itextpdf.io.font.PdfEncodings;
import com.itextpdf.kernel.font.PdfFont;
import com.itextpdf.kernel.font.PdfFontFactory;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;

import java.io.File;

public class FillFormSpecialChars2 {
    public static final String DEST = "./target/sandbox/acroforms/fill_form_special_chars2.pdf";

    public static final String FONT = "./src/main/resources/font/FreeSans.ttf";
    public static final String SRC = "./src/main/resources/pdfs/form.pdf";

    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();

        new FillFormSpecialChars2().manipulatePdf(DEST);
    }

    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(dest));
        PdfAcroForm form = PdfFormCreator.getAcroForm(pdfDoc, true);

        // This method tells to generate an appearance Stream while flattening for all form fields that don't have one.
        // Generating appearances will slow down form flattening,
        // but otherwise the results can be unexpected in Acrobat.
        form.setGenerateAppearance(true);

        PdfFont font = PdfFontFactory.createFont(FONT, PdfEncodings.IDENTITY_H);

        // ӧ character is used here
        form.getField("Name").setValue("\u04e711111", font, 12f);

        // If no fields have been explicitly included, then all fields are flattened.
        // Otherwise only the included fields are flattened.
        form.flattenFields();

        pdfDoc.close();
    }
}

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 Apryse Group NV
    Authors: Apryse Software.

    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
package com.itextpdf.samples.sandbox.acroforms;

import com.itextpdf.forms.fields.PdfFormCreator;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.forms.PdfAcroForm;

import java.io.File;

public class FormatFields {
    public static final String DEST = "./target/sandbox/acroforms/format_fields.pdf";

    public static final String SRC = "./src/main/resources/pdfs/form.pdf";

    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();

        new FormatFields().manipulatePdf(DEST);
    }

    protected void manipulatePdf(String dest) throws Exception {
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(SRC), new PdfWriter(dest));
        PdfAcroForm form = PdfFormCreator.getAcroForm(pdfDoc, true);

        // The second parameter sets how the field's value will be displayed in the resultant pdf.
        // If the second parameter is null, then actual value will be shown.
        form.getField("Name").setValue("1.0", "100%");
        form.getField("Company").setValue("1217000.000000", "$1,217,000");

        pdfDoc.close();
    }
}

/*
    This file is part of the iText (R) project.
    Copyright (c) 1998-2023 Apryse Group NV
    Authors: Apryse Software.

    For more information, please contact iText Software at this address:
    sales@itextpdf.com
 */
package com.itextpdf.samples.sandbox.acroforms;

import com.itextpdf.forms.fields.PdfFormCreator;
import com.itextpdf.forms.fields.TextFormFieldBuilder;
import com.itextpdf.io.source.IRandomAccessSource;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.io.source.ByteArrayOutputStream;
import com.itextpdf.io.source.RandomAccessSourceFactory;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormField;
import com.itextpdf.forms.fields.PdfTextFormField;
import com.itextpdf.kernel.pdf.ReaderProperties;

import java.io.File;

public class MultiLineField {
    public static final String DEST = "./target/sandbox/acroforms/multi_line_field.pdf";

    public static final String FIELD_NAME = "text";

    public static void main(String[] args) throws Exception {
        File file = new File(DEST);
        file.getParentFile().mkdirs();

        new MultiLineField().manipulatePdf(DEST);
    }

    protected void manipulatePdf(String dest) throws Exception {
        
        // createForm() method creates a temporary document in the memory,
        // which then will be used as a source while writing to a real document
        byte[] content = createForm();
        IRandomAccessSource source = new RandomAccessSourceFactory().createSource(content);
        PdfDocument pdfDoc = new PdfDocument(new PdfReader(source, new ReaderProperties()), new PdfWriter(dest));
        PdfAcroForm form = PdfFormCreator.getAcroForm(pdfDoc, true);

        form.getField(FIELD_NAME).setValue(
                "A B C D E F\nG H I J K L M N\nO P Q R S T U\r\nV W X Y Z\n\nAlphabet street");

        // If no fields have been explicitly included, then all fields are flattened.
        // Otherwise only the included fields are flattened.
        form.flattenFields();

        pdfDoc.close();
    }

    public byte[] createForm() {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PdfDocument pdfDoc = new PdfDocument(new PdfWriter(baos));
        Rectangle rect = new Rectangle(36, 720, 108, 86);

        PdfTextFormField textFormField = new TextFormFieldBuilder(pdfDoc, FIELD_NAME)
                .setWidgetRectangle(rect).createText();
        textFormField.setValue("text");

        // Being set as true, the field can contain multiple lines of text;
        // if false, the field's text is restricted to a single line.
        textFormField.setMultiline(true);
        PdfFormCreator.getAcroForm(pdfDoc, true).addField(textFormField);

        pdfDoc.close();

        return baos.toByteArray();
    }
}