Example usage for com.itextpdf.text.pdf PdfName BASEFONT

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf PdfName BASEFONT.

Prototype

PdfName BASEFONT

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Document

A name

Usage

From source file:pl.edu.icm.cermine.structure.ITextCharacterExtractor.java

License:Open Source License

/**
 * Processes PDF's fonts dictionary. During the process alternative names
 * of Standard 14 Fonts are changed to the standard ones, provided that
 * the font definition doesn't include Widths array.
 *
 * Font dictionary in PDF file often includes an array of individual glyphs' widths.
 * Widths array is always required except for the Standard 14 Fonts, which widths
 * are kept by iText itself. Unfortunately, if the font uses alternative name instead of
 * standard one (see PDF Reference 1.7, table H.3), iText doesn't recognize the font as
 * one of the Standard 14 Fonts, and is unable to determine glyphs widths. In such cases
 * this method will change alternative names to standard ones before PDF's parsing process
 */// w  ww .  j  a  v a2s  . c  o  m
private void processAlternativeFontNames(PdfDictionary resources) {
    if (resources == null) {
        return;
    }
    PdfDictionary fontsDictionary = resources.getAsDict(PdfName.FONT);

    if (fontsDictionary == null) {
        return;
    }
    for (PdfName pdfFontName : fontsDictionary.getKeys()) {
        if (!(fontsDictionary.get(pdfFontName) instanceof PRIndirectReference)) {
            return;
        }
        PRIndirectReference indRef = (PRIndirectReference) fontsDictionary.get(pdfFontName);
        if (!(PdfReader.getPdfObjectRelease(indRef) instanceof PdfDictionary)) {
            return;
        }
        PdfDictionary fontDictionary = (PdfDictionary) PdfReader.getPdfObjectRelease(indRef);

        PdfName baseFont = fontDictionary.getAsName(PdfName.BASEFONT);
        if (baseFont != null) {
            String fontName = PdfName.decodeName(baseFont.toString());
            if (fontDictionary.getAsArray(PdfName.WIDTHS) == null
                    && ALT_TO_STANDART_FONTS.containsKey(fontName)) {
                fontDictionary.put(PdfName.BASEFONT, ALT_TO_STANDART_FONTS.get(fontName));
            }
        }
    }
}

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