Example usage for org.apache.pdfbox.cos COSName FONT

Introduction

In this page you can find the example usage for org.apache.pdfbox.cos COSName FONT.

Prototype

COSName FONT

To view the source code for org.apache.pdfbox.cos COSName FONT.

Click Source Link

Usage

From source file:uk.ac.liverpool.thumbnails.PDFService.java

License:Open Source License

@Override
public FontInformation[] extractFontList(URI u, File fff) throws MalformedURLException, IOException {

    SortedSet<FontInformation> ret = new TreeSet<FontInformation>();
    PDDocument document = getPages(u, fff);
    List pages = document.getDocumentCatalog().getAllPages();
    int i = 0;/*from  w w w . java2 s. c o m*/
    // The code down here is easier as it gets all the fonts used in the document. Still, this would inlcude unused fonts, so we get the fonts page by page and add them to a Hash table.
    for (COSObject c : document.getDocument().getObjectsByType(COSName.FONT)) {
        if (c == null || !(c.getObject() instanceof COSDictionary))
            continue;
        //System.out.println(c.getObject());

        COSDictionary fontDictionary = (COSDictionary) c.getObject();
        // System.out.println(dic.getNameAsString(COSName.BASE_FONT));
        //            }
        //        }
        //        int pagen = document.getNumberOfPages();
        //        i=0;
        //        for (int p=0;p<pagen;p++){
        //            PDPage page = (PDPage)pages.get(p);
        //            PDResources res = page.findResources();
        //            //for each page resources
        //            if (res==null) continue; 
        //            // get the font dictionary
        //            COSDictionary fonts = (COSDictionary) res.getCOSDictionary().getDictionaryObject( COSName.FONT );
        //            for( COSName fontName : fonts.keySet() ) {
        //                COSObject font = (COSObject) fonts.getItem( fontName );
        //                // if the font has already been visited we ingore it
        //                long objectId = font.getObjectNumber().longValue();
        //                if (ret.get(objectId)!=null)
        //                    continue;
        //                if( font==null ||  ! (font.getObject() instanceof COSDictionary) )
        //                    continue;
        //                COSDictionary fontDictionary = (COSDictionary)font.getObject();

        // Type MUSt be font
        if (!fontDictionary.getNameAsString(COSName.TYPE).equals("Font"))
            continue;
        // get the variables
        FontInformation fi = new FontInformation();
        fi.fontType = fontDictionary.getNameAsString(COSName.SUBTYPE);

        String baseFont = fontDictionary.getNameAsString(COSName.BASE_FONT);
        if (baseFont == null)
            continue;
        if (Arrays.binarySearch(standard14, baseFont) >= 0)
            continue;
        COSDictionary fontDescriptor = (COSDictionary) fontDictionary.getDictionaryObject(COSName.FONT_DESC);
        COSBase enc = fontDictionary.getItem(COSName.ENCODING);
        COSBase uni = fontDictionary.getItem(COSName.TO_UNICODE);
        int firstChar = fontDictionary.getInt(COSName.FIRST_CHAR);
        int lastChar = fontDictionary.getInt(COSName.LAST_CHAR);
        String encoding;
        boolean toUnicode = uni != null;
        if (enc == null) {
            encoding = "standard14";
        }
        if (enc instanceof COSString) {
            encoding = ((COSString) enc).getString();
        } else {
            encoding = "table";
        }
        fi.isSubset = false;
        boolean t = true;
        // Type one and TT can have subsets defineing the basename see 5.5.3 pdfref 1.6
        //  if (fi.fontType.lastIndexOf(COSName.TYPE1.getName())!=-1 || fi.fontType.equals(COSName.TRUE_TYPE.getName()) )
        if (baseFont != null) {
            if (baseFont.length() > 6) {
                for (int k = 0; k < 6; k++)
                    if (!Character.isUpperCase(baseFont.charAt(k)))
                        t = false;
                if (baseFont.charAt(6) != '+')
                    t = false;
            } else
                t = false;
            fi.isSubset = t;
            if (fi.isSubset)
                baseFont = baseFont.substring(7);
        }
        fi.fontFlags = 0;
        if (fi.fontType.equals(COSName.TYPE0) || fi.fontType.equals(COSName.TYPE3))
            fi.isEmbedded = true;

        if (fontDescriptor != null) {
            // in Type1 charset indicates font is subsetted
            if (fontDescriptor.getItem(COSName.CHAR_SET) != null)
                fi.isSubset = true;
            if (fontDescriptor.getItem(COSName.FONT_FILE) != null
                    || fontDescriptor.getItem(COSName.FONT_FILE3) != null
                    || fontDescriptor.getItem(COSName.FONT_FILE2) != null)
                fi.isEmbedded = true;
            fi.fontFlags = fontDescriptor.getInt(COSName.getPDFName("Flags"));
            fi.fontFamily = fontDescriptor.getString(COSName.FONT_FAMILY);
            fi.fontStretch = fontDescriptor.getString(COSName.FONT_STRETCH);
        }
        fi.charset = encoding;
        fi.fontName = baseFont;
        fi.isToUnicode = toUnicode;

        ret.add(fi);

    } // for all fonts 

    //    } // for all pages
    Iterator<FontInformation> it = ret.iterator();
    FontInformation prev = null;
    LinkedList<FontInformation> toDelete = new LinkedList<FontInformation>();
    while (it.hasNext()) {
        FontInformation current = it.next();

        if (prev != null && prev.fontName.equals(current.fontName) && prev.fontType.startsWith("CIDFontType"))
            toDelete.add(current);
        prev = current;
    }
    ret.removeAll(toDelete);
    FontInformation[] retArray = ret.toArray(new FontInformation[0]);

    return retArray;
}

---

• «
• 1
• 2
• »