/**
* This will load a PFB to be embedded into a document.
*
* @param doc The PDF document that will hold the embedded font.
* @param dict The Font dictionary to write to.
* @param pfbStream The pfb input.
* @throws IOException If there is an error loading the data.
*/
public PdfType1FontEmbedder(Document doc, PdfDictionary dict, Bytes.IInputStream pfbStream, Encoding encoding)
{
dict[PdfName.Subtype] = PdfName.Type1;
// read the pfb
byte[] pfbBytes = pfbStream.ToByteArray();
PfbParser pfbParser = new PfbParser(pfbBytes);
type1 = Type1Font.CreateWithPFB(pfbBytes);
if (encoding == null)
{
fontEncoding = Type1Encoding.FromFontBox(type1.Encoding);
}
else
{
fontEncoding = encoding;
}
// build font descriptor
FontDescriptor fd = BuildFontDescriptor(type1);
PdfStream fontStream = new PdfStream(pfbParser.GetInputStream());
fontStream.Header[PdfName.Length] = PdfInteger.Get(pfbParser.Size);
for (int i = 0; i < pfbParser.Lengths.Length; i++)
{
fontStream.Header[new PdfName("Length" + (i + 1))] = PdfInteger.Get(pfbParser.Lengths[i]);
}
fd.FontFile = new FontFile(doc, fontStream);
// set the values
dict[PdfName.FontDescriptor] = fd.BaseObject;
dict[PdfName.BaseFont] = PdfName.Get(type1.Name);
// widths
List <int> widths = new List <int>(256);
for (int code = 0; code <= 255; code++)
{
string name = fontEncoding.GetName(code);
int width = (int)Math.Round(type1.GetWidth(name));
widths.Add(width);
}
dict[PdfName.FirstChar] = PdfInteger.Get(0);
dict[PdfName.LastChar] = PdfInteger.Get(255);
dict[PdfName.Widths] = new PdfArray(widths.Select(p => PdfInteger.Get(p)));
dict[PdfName.Encoding] = encoding.GetPdfObject();
}
internal static Type1Font LoadType1Font(FontFile fontFile)
{
Type1Font t1 = null;
var stream = fontFile.BaseDataObject;
int length1 = fontFile.Length1;
int length2 = fontFile.Length2;
// repair Length1 and Length2 if necessary
byte[] bytes = stream.ExtractBody(true).GetBuffer();
length1 = RepairLength1(bytes, length1);
length2 = RepairLength2(bytes, length1, length2);
if (bytes.Length > 0 && (bytes[0] & 0xff) == PFB_START_MARKER)
{
// some bad files embed the entire PFB, see PDFBOX-2607
t1 = Type1Font.CreateWithPFB(bytes);
}
else
{
// the PFB embedded as two segments back-to-back
byte[] segment1 = new byte[length1];
Array.Copy(bytes, 0, segment1, 0, length1);
byte[] segment2 = new byte[length2];
Array.Copy(bytes, length1, segment2, 0, length2);
// empty streams are simply ignored
if (length1 > 0 && length2 > 0)
{
t1 = Type1Font.CreateWithSegments(segment1, segment2);
}
}
return(t1);
}