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/parser/ImageRenderInfo.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Kevin Day, 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.parser;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.pdf.PRStream;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfIndirectReference;
import com.itextpdf.text.pdf.PdfReader;

/**
 * Represents image data from a PDF
 * @since 5.0.1
 */
public class ImageRenderInfo {
	/** The graphics state that was in effect when the image was rendered */
	private final GraphicsState gs;
    /** A reference to the image XObject */
    private final PdfIndirectReference ref;
    /** A reference to an inline image */
    private final InlineImageInfo inlineImageInfo;
    /** the color space associated with the image */
    private final PdfDictionary colorSpaceDictionary;
    /** the image object to be rendered, if it has been parsed already.  Null otherwise. */
    private PdfImageObject imageObject = null;

    /**
     * Array containing marked content info for the text.
     * @since 5.0.2
     */
    private final Collection<MarkedContentInfo> markedContentInfos;


    private ImageRenderInfo(GraphicsState gs, PdfIndirectReference ref, PdfDictionary colorSpaceDictionary,Collection<MarkedContentInfo> markedContentInfo) {
        this.gs = gs;
        this.ref = ref;
        this.inlineImageInfo = null;
        this.colorSpaceDictionary = colorSpaceDictionary;
        this.markedContentInfos = new ArrayList<MarkedContentInfo>();
        if(markedContentInfo != null) {
            this.markedContentInfos.addAll(markedContentInfo);
        }
    }

    private ImageRenderInfo(GraphicsState gs, InlineImageInfo inlineImageInfo, PdfDictionary colorSpaceDictionary,Collection<MarkedContentInfo> markedContentInfo) {
        this.gs = gs;
        this.ref = null;
        this.inlineImageInfo = inlineImageInfo;
        this.colorSpaceDictionary = colorSpaceDictionary;
        this.markedContentInfos = new ArrayList<MarkedContentInfo>();
        if(markedContentInfo != null) {
            this.markedContentInfos.addAll(markedContentInfo);
        }
    }
    /**
     * Create an ImageRenderInfo object based on an XObject (this is the most common way of including an image in PDF)
     * @param gs graphic state of the XObject
     * @param ref a reference to the image XObject
     * @param colorSpaceDictionary colourspace of the image
     * @return the ImageRenderInfo representing the rendered XObject
     * @since 5.0.1
     */
    public static ImageRenderInfo createForXObject(GraphicsState gs, PdfIndirectReference ref, PdfDictionary colorSpaceDictionary){
        return new ImageRenderInfo(gs, ref, colorSpaceDictionary,null);
    }

    /**
     * Create an ImageRenderInfo object based on an XObject (this is the most common way of including an image in PDF)
     * @param gs graphic state of the XObject
     * @param ref a reference to the image XObject
     * @param colorSpaceDictionary colourspace of the image
     * @param markedContentInfo marked content information for the XObject
     * @return the ImageRenderInfo representing the rendered XObject
     * @since 5.5.11
     */
    public static ImageRenderInfo createForXObject(GraphicsState gs, PdfIndirectReference ref, PdfDictionary colorSpaceDictionary, Collection<MarkedContentInfo> markedContentInfo){
        return new ImageRenderInfo(gs, ref, colorSpaceDictionary,markedContentInfo);
    }
    
    /**
     * Create an ImageRenderInfo object based on inline image data.
     * @param gs graphic state of the XObject
     * @param InlineImageInfo  a reference to the inline image
     * @param colorSpaceDictionary colourspace of the image
     * @param markedContentInfo marked content information for the XObject
     * @return the ImageRenderInfo representing the rendered embedded image
     * @since 5.0.1
     */
    protected static ImageRenderInfo createForEmbeddedImage(GraphicsState gs, InlineImageInfo inlineImageInfo, PdfDictionary colorSpaceDictionary,Collection<MarkedContentInfo> markedContentInfo){
        ImageRenderInfo renderInfo = new ImageRenderInfo(gs, inlineImageInfo, colorSpaceDictionary,markedContentInfo);
        return renderInfo;
    }

    
    /**
     * Gets an object containing the image dictionary and bytes.
     * @return an object containing the image dictionary and byte[]
     * @since 5.0.2
     */
    public PdfImageObject getImage() throws IOException {
        prepareImageObject();
        return imageObject;
    }
    
    private void prepareImageObject() throws IOException{
        if (imageObject != null)
            return;
        
        if (ref != null){
            PRStream stream = (PRStream)PdfReader.getPdfObject(ref);
            imageObject = new PdfImageObject(stream, colorSpaceDictionary);
        } else if (inlineImageInfo != null){
            imageObject = new PdfImageObject(inlineImageInfo.getImageDictionary(), inlineImageInfo.getSamples(), colorSpaceDictionary);
        }
    }
    
    /**
     * @return a vector in User space representing the start point of the xobject
     */
    public Vector getStartPoint(){ 
        return new Vector(0, 0, 1).cross(gs.ctm); 
    }

    /**
     * @return The coordinate transformation matrix active when this image was rendered.  Coordinates are in User space.
     * @since 5.0.3
     */
    public Matrix getImageCTM(){
        return gs.ctm;
    }
    
    /**
     * @return the size of the image, in User space units
     * @since 5.0.3
     */
    public float getArea(){
        // the image space area is 1, so we multiply that by the determinant of the CTM to get the transformed area
        return gs.ctm.getDeterminant();
    }
    
    /**
     * @return an indirect reference to the image
     * @since 5.0.2
     */
    public PdfIndirectReference getRef() {
    	return ref;
    }
    
    /**
     * @return the current fill color from the graphics state at the time this render operation occured
     * @since 5.5.7
     */
    public BaseColor getCurrentFillColor(){
    	return gs.fillColor;
    }

    /**
     * Checks if the text belongs to a marked content sequence
     * with a given mcid.
     * @param mcid a marked content id
     * @return true if the text is marked with this id
     * @since 5.5.11
     */
    public boolean hasMcid(int mcid) {
        return hasMcid(mcid, false);
    }

    /**
     * Checks if the text belongs to a marked content sequence
     * with a given mcid.
     * @param mcid a marked content id
     * @param checkTheTopmostLevelOnly indicates whether to check the topmost level of marked content stack only
     * @return true if the text is marked with this id
     * @since 5.5.11
     */
    public boolean hasMcid(int mcid, boolean checkTheTopmostLevelOnly) {
        if (checkTheTopmostLevelOnly) {
            if (markedContentInfos instanceof ArrayList) {
                Integer infoMcid = getMcid();
                return (infoMcid != null) ? infoMcid == mcid : false;
            }
        } else {
            for (MarkedContentInfo info : markedContentInfos) {
                if (info.hasMcid())
                    if(info.getMcid() == mcid)
                        return true;
            }
        }
        return false;
    }


    /**
     * @return the marked content associated with the TextRenderInfo instance.
     */
    public Integer getMcid() {
        if (markedContentInfos instanceof ArrayList) {
            ArrayList<MarkedContentInfo> mci = (ArrayList<MarkedContentInfo>)markedContentInfos;
            MarkedContentInfo info = mci.size() > 0 ? mci.get(mci.size() - 1) : null;
            return (info != null && info.hasMcid()) ? info.getMcid() : null;
        }
        return null;
    }

}

com/itextpdf/text/pdf/parser/ImageRenderInfo.java

 

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2021-07-03, 47967👍, 0💬