iText 5 itextpdf.jar Source Code

itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

✍: FYIcenter.com

com/itextpdf/text/pdf/PdfStructureElement.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf;

import com.itextpdf.text.*;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.interfaces.IAccessibleElement;
import com.itextpdf.text.pdf.interfaces.IPdfStructureElement;
import com.itextpdf.text.pdf.internal.PdfIsoKeys;

import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;

/**
 * This is a node in a document logical structure. It may contain a mark point or it may contain
 * other nodes.
 * @author Paulo Soares
 */
public class PdfStructureElement extends PdfDictionary implements IPdfStructureElement{
    
    /**
     * Holds value of property kids.
     */
    private transient PdfStructureElement parent;
    private transient PdfStructureTreeRoot top;

    private AccessibleElementId elementId;

    /**
     * Holds value of property reference.
     */
    private PdfIndirectReference reference;

    private PdfName structureType;

    /**
     * Creates a new instance of PdfStructureElement.
     * @param parent the parent of this node
     * @param structureType the type of structure. It may be a standard type or a user type mapped by the role map
     */
    public PdfStructureElement(PdfStructureElement parent, PdfName structureType) {
        top = parent.top;
        init(parent, structureType);
        this.parent = parent;
        put(PdfName.P, parent.reference);
        put(PdfName.TYPE, PdfName.STRUCTELEM);
    }

    /**
     * Creates a new instance of PdfStructureElement.
     * @param root the parent of this node
     * @param structureType the type of structure. It may be a standard type or a user type mapped by the role map
     */
    public PdfStructureElement(PdfStructureTreeRoot root, PdfName structureType) {
        top = root;

        init(root, structureType);
        put(PdfName.P, root.getReference());
        put(PdfName.TYPE, PdfName.STRUCTELEM);
    }

    protected PdfStructureElement(PdfDictionary parent, PdfName structureType, AccessibleElementId elementId) {
        this.elementId = elementId;
        if (parent instanceof PdfStructureElement) {
            top = ((PdfStructureElement)parent).top;
            init(parent, structureType);
            this.parent = (PdfStructureElement)parent;
            put(PdfName.P, ((PdfStructureElement)parent).reference);
            put(PdfName.TYPE, PdfName.STRUCTELEM);
        } else if (parent instanceof PdfStructureTreeRoot) {
            top = (PdfStructureTreeRoot)parent;
            init(parent, structureType);
            put(PdfName.P, ((PdfStructureTreeRoot)parent).getReference());
            put(PdfName.TYPE, PdfName.STRUCTELEM);
        } else {

        }
    }

    public PdfName getStructureType() {
        return structureType;
    }

    private void init(PdfDictionary parent, PdfName structureType) {
        if (!top.getWriter().getStandardStructElems().contains(structureType)) {
            PdfDictionary roleMap = top.getAsDict(PdfName.ROLEMAP);
            if (roleMap == null || !roleMap.contains(structureType))
                throw new ExceptionConverter(new DocumentException(MessageLocalization.getComposedMessage("unknown.structure.element.role.1", structureType.toString())));
            else
                this.structureType = roleMap.getAsName(structureType);
        } else {
            this.structureType = structureType;
        }
        PdfObject kido = parent.get(PdfName.K);
        PdfArray kids = null;
        if (kido == null) {
            kids = new PdfArray();
            parent.put(PdfName.K, kids);
        } else if (kido instanceof PdfArray) {
            kids = (PdfArray)kido;
        } else {
            kids = new PdfArray();
            kids.add(kido);
            parent.put(PdfName.K, kids);
        }
        if (kids.size() > 0) {
            if (kids.getAsNumber(0) != null)
                kids.remove(0);
            if (kids.size() > 0) {
                PdfDictionary mcr = kids.getAsDict(0);
                if (mcr != null && PdfName.MCR.equals(mcr.getAsName(PdfName.TYPE))) {
                    kids.remove(0);
                }
            }
        }
        put(PdfName.S, structureType);
        reference = top.getWriter().getPdfIndirectReference();
        kids.add(this.reference);
    }

    /**
     * Gets the parent of this node.
     * @return the parent of this node
     */
    public PdfDictionary getParent() {
        return getParent(false);
    }

    public PdfDictionary getParent(boolean includeStructTreeRoot) {
        if (parent == null && includeStructTreeRoot)
            return top;
        else
            return parent;
    }

    void setPageMark(int page, int mark) {
        if (mark >= 0)
            put(PdfName.K, new PdfNumber(mark));
        top.setPageMark(page, reference);
    }

    void setAnnotation(PdfAnnotation annot, PdfIndirectReference currentPage) {
        PdfArray kArray = getAsArray(PdfName.K);
        if (kArray == null) {
            kArray = new PdfArray();
            PdfObject k = get(PdfName.K);
            if (k != null) {
                kArray.add(k);
            }
            put(PdfName.K, kArray);
        }
        PdfDictionary dict = new PdfDictionary();
        dict.put(PdfName.TYPE, PdfName.OBJR);
        dict.put(PdfName.OBJ, annot.getIndirectReference());
        if (annot.getRole() == PdfName.FORM)
            dict.put(PdfName.PG, currentPage);
        kArray.add(dict);
    }

    /**
     * Gets the reference this object will be written to.
     * @return the reference this object will be written to
     * @since	2.1.6 method removed in 2.1.5, but restored in 2.1.6
     */    
    public PdfIndirectReference getReference() {
        return this.reference;
    }

    /**
     * Gets the first entarance of attribute.
     * @returns PdfObject
     * @since 5.3.4
     */
    public PdfObject getAttribute(PdfName name){
        PdfDictionary attr = getAsDict(PdfName.A);
        if (attr != null){
            if (attr.contains(name))
                return attr.get(name);
        }
        PdfDictionary parent = getParent();
        if (parent instanceof PdfStructureElement)
            return ((PdfStructureElement) parent).getAttribute(name);
        if (parent instanceof PdfStructureTreeRoot)
            return  ((PdfStructureTreeRoot) parent).getAttribute(name);

        return new PdfNull();
    }

    /**
     * Sets the attribute value.
     * @since 5.3.4
     */
    public void setAttribute(PdfName name, PdfObject obj){
        PdfDictionary attr = getAsDict(PdfName.A);
        if (attr == null){
            attr = new PdfDictionary();
            put(PdfName.A, attr);
        }
        attr.put(name, obj);
    }

    public void writeAttributes(final IAccessibleElement element) {
// I do remember that these lines were necessary to avoid creation of files which are not valid from Acrobat 10 preflight perspective.
// Now it seems that in Acrobat 11 there's no such problem (I think Acrobat 10 behavior can be considered as a bug) and we can remove those lines.
//        if (top.getWriter().getPdfVersion().getVersion() < PdfWriter.VERSION_1_7)
//            return;

        if (element instanceof ListItem) {
            writeAttributes((ListItem)element);
        } else if (element instanceof Paragraph) {
            writeAttributes((Paragraph) element);
        } else if (element instanceof Chunk) {
            writeAttributes((Chunk)element);
        } else if (element instanceof Image) {
            writeAttributes((Image)element);
        } else if (element instanceof List) {
            writeAttributes((List)element);
        } else if (element instanceof ListLabel) {
            writeAttributes((ListLabel)element);
        } else if (element instanceof ListBody) {
            writeAttributes((ListBody)element);
        } else if (element instanceof PdfPTable) {
            writeAttributes((PdfPTable)element);
        } else if (element instanceof PdfPRow) {
            writeAttributes((PdfPRow)element);
        } else if (element instanceof PdfPHeaderCell) {
            writeAttributes((PdfPHeaderCell)element);
        } else if (element instanceof PdfPCell) {
            writeAttributes((PdfPCell)element);
        } else if (element instanceof PdfPTableHeader) {
            writeAttributes((PdfPTableHeader)element);
        } else if (element instanceof PdfPTableFooter) {
            writeAttributes((PdfPTableFooter)element);
        } else if (element instanceof PdfPTableBody) {
            writeAttributes((PdfPTableBody)element);
        } else if (element instanceof PdfDiv) {
            writeAttributes((PdfDiv)element);
        } else if (element instanceof PdfTemplate) {
            writeAttributes((PdfTemplate)element);
        } else if (element instanceof Document) {
            writeAttributes((Document)element);
        }
        if (element.getAccessibleAttributes() != null) {
            for (PdfName key : element.getAccessibleAttributes().keySet()) {
                if (key.equals(PdfName.ID)) {
                    PdfObject attr = element.getAccessibleAttribute(key);
                    put(key, attr);
                    top.putIDTree(attr.toString(), getReference());
                }
                else if (key.equals(PdfName.LANG) || key.equals(PdfName.ALT) || key.equals(PdfName.ACTUALTEXT) || key.equals(PdfName.E) || key.equals(PdfName.T)) {
                    put(key, element.getAccessibleAttribute(key));
                } else {
                    setAttribute(key, element.getAccessibleAttribute(key));
                }
            }
        }
    }

    private void writeAttributes(final Chunk chunk) {
        if (chunk != null) {
            if (chunk.getImage() != null) {
                writeAttributes(chunk.getImage());
            } else {
                HashMap<String, Object> attr = chunk.getAttributes();
                if (attr != null){
                    this.setAttribute(PdfName.O, PdfName.LAYOUT);
                    // Setting non-inheritable attributes
                    if (attr.containsKey(Chunk.UNDERLINE)){
                        this.setAttribute(PdfName.TEXTDECORATIONTYPE, PdfName.UNDERLINE);
                    }
                    if (attr.containsKey(Chunk.BACKGROUND)){
                        Object[] back = (Object[])attr.get(Chunk.BACKGROUND);
                        BaseColor color = (BaseColor)back[0];
                        this.setAttribute(PdfName.BACKGROUNDCOLOR, new PdfArray(new float[] {color.getRed()/255f, color.getGreen()/255f, color.getBlue()/255f}) );
                    }

                    // Setting inheritable attributes
                    IPdfStructureElement parent = (IPdfStructureElement) this.getParent(true);
                    PdfObject obj = getParentAttribute(parent, PdfName.COLOR);
                    if ((chunk.getFont() != null) && (chunk.getFont().getColor() != null)) {
                        BaseColor c = chunk.getFont().getColor();
                        setColorAttribute(c, obj, PdfName.COLOR);
                    }
                    PdfObject decorThickness  = getParentAttribute(parent, PdfName.TEXTDECORATIONTHICKNESS);
                    PdfObject decorColor  = getParentAttribute(parent, PdfName.TEXTDECORATIONCOLOR);
                    if (attr.containsKey(Chunk.UNDERLINE)){
                        Object[][] unders = (Object[][])attr.get(Chunk.UNDERLINE);
                        Object[] arr = unders[unders.length-1];
                        BaseColor color = (BaseColor)arr[0];
                        float [] floats = (float[]) arr[1];
                        float thickness = floats[0];
                        // Setting thickness
                        if (decorThickness instanceof PdfNumber){
                            float t = ((PdfNumber) decorThickness).floatValue();
                            if (Float.compare(thickness,t) != 0){
                                this.setAttribute(PdfName.TEXTDECORATIONTHICKNESS, new PdfNumber(thickness));
                            }
                        }
                        else
                            this.setAttribute(PdfName.TEXTDECORATIONTHICKNESS, new PdfNumber(thickness));

                        // Setting decoration color
                        if (color != null){
                            setColorAttribute(color, decorColor, PdfName.TEXTDECORATIONCOLOR);
                        }
                    }
                    
                    if (attr.containsKey(Chunk.LINEHEIGHT)){
                        float height = (Float)attr.get(Chunk.LINEHEIGHT);
                        PdfObject parentLH = getParentAttribute(parent, PdfName.LINEHEIGHT);
                        if (parentLH instanceof PdfNumber){
                            float pLH = ((PdfNumber)parentLH).floatValue();
                            if (Float.compare(pLH, height) != 0){
                                this.setAttribute(PdfName.LINEHEIGHT, new PdfNumber(height));
                            }
                        }
                        else
                            this.setAttribute(PdfName.LINEHEIGHT, new PdfNumber(height));
                    }
                }
            }
        }
    }

    private void writeAttributes(final Image image) {
        if (image != null) {
            this.setAttribute(PdfName.O, PdfName.LAYOUT);
            if (image.getWidth() > 0){
                this.setAttribute(PdfName.WIDTH, new PdfNumber(image.getWidth()));
            }
            if (image.getHeight() > 0){
                this.setAttribute(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
            }
            PdfRectangle rect = new PdfRectangle(image, image.getRotation());
            this.setAttribute(PdfName.BBOX, rect);
            if (image.getBackgroundColor() != null){
                BaseColor color = image.getBackgroundColor();
                this.setAttribute(PdfName.BACKGROUNDCOLOR, new PdfArray(new float[] {color.getRed()/255f, color.getGreen()/255f, color.getBlue()/255f}) );
            }
        }
    }

    private void writeAttributes(final PdfTemplate template) {
        if (template != null) {
            this.setAttribute(PdfName.O, PdfName.LAYOUT);
            if (template.getWidth() > 0){
                this.setAttribute(PdfName.WIDTH, new PdfNumber(template.getWidth()));
            }
            if (template.getHeight() > 0){
                this.setAttribute(PdfName.HEIGHT, new PdfNumber(template.getHeight()));
            }
            PdfRectangle rect = new PdfRectangle(template.getBoundingBox());
            this.setAttribute(PdfName.BBOX, rect);
        }
    }

    private void writeAttributes(final Paragraph paragraph) {
        if (paragraph != null) {
            this.setAttribute(PdfName.O, PdfName.LAYOUT);
            // Setting non-inheritable attributes
            if (Float.compare(paragraph.getSpacingBefore(), 0f) != 0)
                this.setAttribute(PdfName.SPACEBEFORE, new PdfNumber(paragraph.getSpacingBefore()));
            if (Float.compare(paragraph.getSpacingAfter(), 0f) != 0)
                this.setAttribute(PdfName.SPACEAFTER, new PdfNumber(paragraph.getSpacingAfter()));

            // Setting inheritable attributes
            IPdfStructureElement parent = (IPdfStructureElement) this.getParent(true);
            PdfObject obj = getParentAttribute(parent, PdfName.COLOR);
            if ((paragraph.getFont() != null) && (paragraph.getFont().getColor() != null)) {
                BaseColor c = paragraph.getFont().getColor();
                setColorAttribute(c, obj, PdfName.COLOR);
            }
            obj = getParentAttribute(parent, PdfName.TEXTINDENT);
            if (Float.compare(paragraph.getFirstLineIndent(), 0f) != 0) {
                boolean writeIndent = true;
                if (obj instanceof PdfNumber){
                    if (Float.compare(((PdfNumber)obj).floatValue(), new Float(paragraph.getFirstLineIndent())) == 0)
                        writeIndent = false;
                }
                if (writeIndent)
                    this.setAttribute(PdfName.TEXTINDENT, new PdfNumber(paragraph.getFirstLineIndent()));
            }
            obj = getParentAttribute(parent, PdfName.STARTINDENT);
            if (obj instanceof PdfNumber) {
                float startIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(startIndent, paragraph.getIndentationLeft()) != 0)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(paragraph.getIndentationLeft()));
            } else {
                if (Math.abs(paragraph.getIndentationLeft()) > Float.MIN_VALUE)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(paragraph.getIndentationLeft()));
            }

            obj = getParentAttribute(parent, PdfName.ENDINDENT);
            if (obj instanceof PdfNumber) {
                float endIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(endIndent, paragraph.getIndentationRight()) != 0)
                    this.setAttribute(PdfName.ENDINDENT, new PdfNumber(paragraph.getIndentationRight()));
            } else {
                if (Float.compare(paragraph.getIndentationRight(), 0) != 0)
                    this.setAttribute(PdfName.ENDINDENT, new PdfNumber(paragraph.getIndentationRight()));
            }

            setTextAlignAttribute(paragraph.getAlignment());
        }
    }

    private void writeAttributes(final List list) {
        if (list != null) {
            this.setAttribute(PdfName.O, PdfName.LIST);
            if (list.isAutoindent()) {
                if (list.isNumbered()) {
                    if (list.isLettered()) {
                        if (list.isLowercase())
                            this.setAttribute(PdfName.LISTNUMBERING, PdfName.LOWERROMAN);
                        else
                            this.setAttribute(PdfName.LISTNUMBERING, PdfName.UPPERROMAN);
                    }
                    else {
                        this.setAttribute(PdfName.LISTNUMBERING, PdfName.DECIMAL);
                    }
                }
                else
                    if (list.isLettered()) {
                        if (list.isLowercase())
                            this.setAttribute(PdfName.LISTNUMBERING, PdfName.LOWERALPHA);
                        else
                            this.setAttribute(PdfName.LISTNUMBERING, PdfName.UPPERALPHA);
                    }
            }
            PdfObject obj = getParentAttribute(parent, PdfName.STARTINDENT);
            if (obj instanceof PdfNumber) {
                float startIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(startIndent, list.getIndentationLeft()) != 0)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(list.getIndentationLeft()));
            } else {
                if (Math.abs(list.getIndentationLeft()) > Float.MIN_VALUE)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(list.getIndentationLeft()));
            }

            obj = getParentAttribute(parent, PdfName.ENDINDENT);
            if (obj instanceof PdfNumber) {
                float endIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(endIndent, list.getIndentationRight()) != 0)
                    this.setAttribute(PdfName.ENDINDENT, new PdfNumber(list.getIndentationRight()));
            } else {
                if (Float.compare(list.getIndentationRight(), 0) != 0)
                    this.setAttribute(PdfName.ENDINDENT, new PdfNumber(list.getIndentationRight()));
            }
        }
    }

    private void writeAttributes(final ListItem listItem) {
        if (listItem != null) {
            PdfObject obj = getParentAttribute(parent, PdfName.STARTINDENT);
            if (obj instanceof PdfNumber) {
                float startIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(startIndent, listItem.getIndentationLeft()) != 0)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(listItem.getIndentationLeft()));
            } else {
                if (Math.abs(listItem.getIndentationLeft()) > Float.MIN_VALUE)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(listItem.getIndentationLeft()));
            }

            obj = getParentAttribute(parent, PdfName.ENDINDENT);
            if (obj instanceof PdfNumber) {
                float endIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(endIndent, listItem.getIndentationRight()) != 0)
                    this.setAttribute(PdfName.ENDINDENT, new PdfNumber(listItem.getIndentationRight()));
            } else {
                if (Float.compare(listItem.getIndentationRight(), 0) != 0)
                    this.setAttribute(PdfName.ENDINDENT, new PdfNumber(listItem.getIndentationRight()));
            }
        }
    }

    private void writeAttributes(final ListBody listBody) {
        if (listBody != null) {

        }
    }

    private void writeAttributes(final ListLabel listLabel) {
        if (listLabel != null) {
            PdfObject obj = getParentAttribute(parent, PdfName.STARTINDENT);
            if (obj instanceof PdfNumber) {
                float startIndent = ((PdfNumber) obj).floatValue();
                if (Float.compare(startIndent, listLabel.getIndentation()) != 0)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(listLabel.getIndentation()));
            } else {
                if (Math.abs(listLabel.getIndentation()) > Float.MIN_VALUE)
                    this.setAttribute(PdfName.STARTINDENT, new PdfNumber(listLabel.getIndentation()));
            }
        }
    }

    private void writeAttributes(final PdfPTable table) {
        if (table != null) {
            this.setAttribute(PdfName.O, PdfName.TABLE);
            // Setting non-inheritable attributes
            if (Float.compare(table.getSpacingBefore(), 0f) != 0)
                this.setAttribute(PdfName.SPACEBEFORE, new PdfNumber(table.getSpacingBefore()));

            if (Float.compare(table.getSpacingAfter(), 0f) != 0)
                this.setAttribute(PdfName.SPACEAFTER, new PdfNumber(table.getSpacingAfter()));

            if (table.getTotalHeight() > 0){
                this.setAttribute(PdfName.HEIGHT, new PdfNumber(table.getTotalHeight()));
            }
            if (table.getTotalWidth() > 0){
                this.setAttribute(PdfName.WIDTH, new PdfNumber(table.getTotalWidth()));
            }
        }
    }

    private void writeAttributes(final PdfPRow row) {
        if (row != null) {
            this.setAttribute(PdfName.O, PdfName.TABLE);
        }
    }

    private void writeAttributes(final PdfPCell cell) {
        if (cell != null) {
            this.setAttribute(PdfName.O, PdfName.TABLE);
            if (cell.getColspan() != 1){
                this.setAttribute(PdfName.COLSPAN, new PdfNumber(cell.getColspan()));
            }
            if (cell.getRowspan() != 1){
                this.setAttribute(PdfName.ROWSPAN, new PdfNumber(cell.getRowspan()));
            }
            if (cell.getHeaders() != null){
                PdfArray headers = new PdfArray();
                ArrayList<PdfPHeaderCell> list = cell.getHeaders();
                for (PdfPHeaderCell header : list){
                    if (header.getName() != null)
                        headers.add(new PdfString(header.getName()));
                }
                if (!headers.isEmpty())
                    this.setAttribute(PdfName.HEADERS, headers);
            }

            if (cell.getCalculatedHeight() > 0){
                this.setAttribute(PdfName.HEIGHT, new PdfNumber(cell.getCalculatedHeight()));
            }

            if (cell.getWidth() > 0){
                this.setAttribute(PdfName.WIDTH, new PdfNumber(cell.getWidth()));
            }

            if (cell.getBackgroundColor() != null){
                BaseColor color = cell.getBackgroundColor();
                this.setAttribute(PdfName.BACKGROUNDCOLOR, new PdfArray(new float[] {color.getRed()/255f, color.getGreen()/255f, color.getBlue()/255f}) );
            }
        }
    }

    private void writeAttributes(final PdfPHeaderCell headerCell) {
        if (headerCell != null) {
            if (headerCell.getScope() != PdfPHeaderCell.NONE){
                switch (headerCell.getScope()){
                    case PdfPHeaderCell.ROW     : this.setAttribute(PdfName.SCOPE, PdfName.ROW); break;
                    case PdfPHeaderCell.COLUMN  : this.setAttribute(PdfName.SCOPE, PdfName.COLUMN); break;
                    case PdfPHeaderCell.BOTH    : this.setAttribute(PdfName.SCOPE, PdfName.BOTH); break;
                }
            }
            if (headerCell.getName() != null)
                this.setAttribute(PdfName.NAME, new PdfName(headerCell.getName()));
            writeAttributes((PdfPCell)headerCell);
        }
    }

    private void writeAttributes(final PdfPTableHeader header) {
        if (header != null) {
            this.setAttribute(PdfName.O, PdfName.TABLE);
        }
    }

    private void writeAttributes(final PdfPTableBody body) {
        if (body != null) {

        }
    }

    private void writeAttributes(final PdfPTableFooter footer) {
        if (footer != null) {

        }
    }

    private void writeAttributes(final PdfDiv div) {
        if (div != null) {
            // Setting non-inheritable attributes
            if (div.getBackgroundColor() != null)
                setColorAttribute(div.getBackgroundColor(), null, PdfName.BACKGROUNDCOLOR);

            // Setting inheritable attributes
            setTextAlignAttribute(div.getTextAlignment());
        }
    }

    private void writeAttributes(final Document document) {
        if (document != null) {

        }
    }
    
    private boolean colorsEqual(PdfArray parentColor, float [] color){
        if (Float.compare(color[0], parentColor.getAsNumber(0).floatValue()) != 0){
            return false;
        }
        if (Float.compare(color[1], parentColor.getAsNumber(1).floatValue()) != 0){
            return false;
        }
        if (Float.compare(color[2], parentColor.getAsNumber(2).floatValue()) != 0){
            return false;
        }
        return true;
    }

    private void setColorAttribute(BaseColor newColor, PdfObject oldColor, PdfName attributeName){
        float [] colorArr = new float[]{newColor.getRed()/255f, newColor.getGreen()/255f, newColor.getBlue()/255f};
        if ((oldColor != null) && (oldColor instanceof PdfArray)){
            PdfArray oldC = (PdfArray)oldColor;
            if (colorsEqual(oldC, colorArr))
            {
                this.setAttribute(attributeName, new PdfArray(colorArr));
            }
            else
                this.setAttribute(attributeName, new PdfArray(colorArr));
        }
        else
            this.setAttribute(attributeName, new PdfArray(colorArr));
    }

    private void setTextAlignAttribute(final int elementAlign){
        PdfName align = null;
        switch (elementAlign) {
            case Element.ALIGN_LEFT:
                align = PdfName.START;
                break;
            case Element.ALIGN_CENTER:
                align = PdfName.CENTER;
                break;
            case Element.ALIGN_RIGHT:
                align = PdfName.END;
                break;
            case Element.ALIGN_JUSTIFIED:
                align = PdfName.JUSTIFY;
                break;
        }
        PdfObject obj = getParentAttribute(parent, PdfName.TEXTALIGN);
        if (obj instanceof PdfName) {
            PdfName textAlign = ((PdfName) obj);
            if (align != null && !textAlign.equals(align))
                this.setAttribute(PdfName.TEXTALIGN, align);
        } else {
            if (align != null && !PdfName.START.equals(align))
                this.setAttribute(PdfName.TEXTALIGN, align);
        }
    }

    @Override
    public void toPdf(final PdfWriter writer, final OutputStream os) throws IOException {
        PdfWriter.checkPdfIsoConformance(writer, PdfIsoKeys.PDFISOKEY_STRUCTELEM, this);
        super.toPdf(writer, os);
    }

    private PdfObject getParentAttribute(IPdfStructureElement parent, PdfName name) {
        if (parent == null)
            return null;
        return parent.getAttribute(name);
    }

    protected void setStructureTreeRoot(PdfStructureTreeRoot root) {
        this.top = root;
    }

    protected void setStructureElementParent(PdfStructureElement parent) {
        this.parent = parent;
    }

    protected AccessibleElementId getElementId() {
        return elementId;
    }
}

com/itextpdf/text/pdf/PdfStructureElement.java

 

⇒ iText-2.1.6.jar - iText, a JAVA-PDF library

⇐ iText layout.jar Source Code

⇑ Download and Install iText Java Library

⇑⇑ iText for PDF Generation

2021-07-03, 47875👍, 0💬