org.jpedal.fonts.CIDFontType2 Maven / Gradle / Ivy

/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/support/
 *
 * (C) Copyright 1997-2017 IDRsolutions and Contributors.
 *
 * This file is part of JPedal/JPDF2HTML5
 *
 @LICENSE@
 *
 * ---------------
 * CIDFontType2.java
 * ---------------
 */
package org.jpedal.fonts;

import java.util.Map;

import org.jpedal.fonts.tt.TTGlyphs;
import org.jpedal.io.ObjectStore;
import org.jpedal.io.PdfObjectReader;
import org.jpedal.objects.raw.PdfDictionary;
import org.jpedal.objects.raw.PdfObject;
import org.jpedal.parser.PdfFontFactory;


/**
 * handles truetype specifics
 */
public class CIDFontType2 extends TrueType {

    /**
     * get handles onto Reader so we can access the file
     */
    public CIDFontType2(final PdfObjectReader currentPdfFile, final String substituteFontFile) {

        isCIDFont = true;
        TTstreamisCID = true;

        glyphs = new TTGlyphs();

        init(currentPdfFile);

        this.substituteFontFile = substituteFontFile;

    }

    /**
     * get handles onto Reader so we can access the file
     */
    public CIDFontType2(final PdfObjectReader currentPdfFile, final boolean ttflag) {

        isCIDFont = true;
        TTstreamisCID = ttflag;

        glyphs = new TTGlyphs();

        init(currentPdfFile);

    }

    /**
     * read in a font and its details from the pdf file
     */
    @Override
    public void createFont(final PdfObject pdfObject, final String fontID, final boolean renderPage, final ObjectStore objectStore, final Map substitutedFonts) throws Exception {

        fontTypes = StandardFonts.CIDTYPE2;
        this.fontID = fontID;

        final PdfObject Descendent = pdfObject.getDictionary(PdfDictionary.DescendantFonts);
        final PdfObject pdfFontDescriptor = Descendent.getDictionary(PdfDictionary.FontDescriptor);

        createCIDFont(pdfObject, Descendent);

        if (pdfFontDescriptor != null) {

            final byte[] stream;
            PdfObject FontFile2 = pdfFontDescriptor.getDictionary(PdfDictionary.FontFile2);

            if (FontFile2 == null) {
                FontFile2 = pdfFontDescriptor.getDictionary(PdfDictionary.FontFile3);
            }

            if (FontFile2 != null) {
                stream = currentPdfFile.readStream(FontFile2, true, true, false, false, false, FontFile2.getCacheName(currentPdfFile.getObjectReader()));

                if (stream != null) {
                    readEmbeddedFont(stream, null, hasEncoding);
                }
            }
        }


        //allow for corrupted
        final boolean isCorrupt = glyphs.isCorrupted();

        if (glyphs.isCorrupted()) {

            final PdfFontFactory pdfFontFactory = new PdfFontFactory(currentPdfFile);
            pdfFontFactory.getFontSub(getBaseFontName());
            isFontEmbedded = false;

            substituteFontFile = pdfFontFactory.getMapFont();

            if (substituteFontFile == null) {

                glyphs.setFontEmbedded(false);

                //generic setup so we have Java fonts available
                init(fontID, renderPage);

            }
        }

        //setup and substitute font
        if (renderPage && !isFontEmbedded && substituteFontFile != null) {
            this.substituteFontUsed(substituteFontFile);
            isFontSubstituted = true;
            this.isFontEmbedded = true;

            glyphs.setFontEmbedded(true);
        }

        //make sure a font set
        if (renderPage) {
            setFont(getFontName(), 1);
        }

        glyphs.setCorrupted(isCorrupt);

    }
}