private void AddSoftMask(
SortedDictionary <Int32, PDFobj> objects,
byte[] data,
String colorSpace,
int bitsPerComponent)
{
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Type");
dict.Add("/XObject");
dict.Add("/Subtype");
dict.Add("/Image");
dict.Add("/Filter");
dict.Add("/FlateDecode");
dict.Add("/Width");
dict.Add(((int)w).ToString());
dict.Add("/Height");
dict.Add(((int)h).ToString());
dict.Add("/ColorSpace");
dict.Add("/" + colorSpace);
dict.Add("/BitsPerComponent");
dict.Add(bitsPerComponent.ToString());
dict.Add("/Length");
dict.Add(data.Length.ToString());
dict.Add(">>");
obj.SetStream(data);
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
objNumber = obj.number;
}
private static void AddToUnicodeCMapObject(
SortedDictionary <Int32, PDFobj> objects, Font font)
{
StringBuilder sb = new StringBuilder();
sb.Append("/CIDInit /ProcSet findresource begin\n");
sb.Append("12 dict begin\n");
sb.Append("begincmap\n");
sb.Append("/CIDSystemInfo <</Registry (Adobe) /Ordering (Identity) /Supplement 0>> def\n");
sb.Append("/CMapName /Adobe-Identity def\n");
sb.Append("/CMapType 2 def\n");
sb.Append("1 begincodespacerange\n");
sb.Append("<0000> <FFFF>\n");
sb.Append("endcodespacerange\n");
List <String> list = new List <String>();
StringBuilder buf = new StringBuilder();
for (int cid = 0; cid <= 0xffff; cid++)
{
int gid = font.unicodeToGID[cid];
if (gid > 0)
{
buf.Append('<');
buf.Append(ToHexString(gid));
buf.Append("> <");
buf.Append(ToHexString(cid));
buf.Append(">\n");
list.Add(buf.ToString());
buf.Length = 0;
if (list.Count == 100)
{
WriteListToBuffer(list, sb);
}
}
}
if (list.Count > 0)
{
WriteListToBuffer(list, sb);
}
sb.Append("endcmap\n");
sb.Append("CMapName currentdict /CMap defineresource pop\n");
sb.Append("end\nend");
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Length");
dict.Add(sb.Length.ToString());
dict.Add(">>");
obj.SetStream((new System.Text.UTF8Encoding()).GetBytes(sb.ToString()));
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
font.SetToUnicodeCMapObjNumber(obj.number);
}
private static void AddCIDFontDictionaryObject(
SortedDictionary <Int32, PDFobj> objects, Font font)
{
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Type");
dict.Add("/Font");
dict.Add("/Subtype");
dict.Add("/CIDFontType" + (font.cff ? "0" : "2"));
dict.Add("/BaseFont");
dict.Add("/" + font.name);
dict.Add("/CIDSystemInfo");
dict.Add("<<");
dict.Add("/Registry");
dict.Add("(Adobe)");
dict.Add("/Ordering");
dict.Add("(Identity)");
dict.Add("/Supplement");
dict.Add("0");
dict.Add(">>");
dict.Add("/FontDescriptor");
dict.Add(font.GetFontDescriptorObjNumber().ToString());
dict.Add("0");
dict.Add("R");
dict.Add("/DW");
dict.Add(((Int32)
((1000f / font.unitsPerEm) * font.advanceWidth[0])).ToString());
dict.Add("/W");
dict.Add("[");
dict.Add("0");
dict.Add("[");
for (int i = 0; i < font.advanceWidth.Length; i++)
{
dict.Add(((int)
((1000f / font.unitsPerEm) * font.advanceWidth[i])).ToString());
}
dict.Add("]");
dict.Add("]");
dict.Add("/CIDToGIDMap");
dict.Add("/Identity");
dict.Add(">>");
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
font.SetCidFontDictObjNumber(obj.number);
}
private static void EmbedFontFile(
SortedDictionary <Int32, PDFobj> objects,
Font font,
Stream inputStream)
{
int metadataObjNumber = AddMetadataObject(objects, font);
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Metadata");
dict.Add(metadataObjNumber.ToString());
dict.Add("0");
dict.Add("R");
dict.Add("/Filter");
dict.Add("/FlateDecode");
dict.Add("/Length");
dict.Add(font.compressed_size.ToString());
if (font.cff)
{
dict.Add("/Subtype");
dict.Add("/CIDFontType0C");
}
else
{
dict.Add("/Length1");
dict.Add(font.uncompressed_size.ToString());
}
dict.Add(">>");
MemoryStream buf2 = new MemoryStream();
byte[] buf = new byte[16384];
int len;
while ((len = inputStream.Read(buf, 0, buf.Length)) > 0)
{
buf2.Write(buf, 0, len);
}
inputStream.Close();
obj.SetStream(buf2.ToArray());
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
font.fileObjNumber = obj.number;
}
private static void AddFontDescriptorObject(
SortedDictionary <Int32, PDFobj> objects, Font font)
{
float factor = 1000f / font.unitsPerEm;
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Type");
dict.Add("/FontDescriptor");
dict.Add("/FontName");
dict.Add("/" + font.name);
dict.Add("/FontFile" + (font.cff ? "3" : "2"));
dict.Add(font.fileObjNumber.ToString());
dict.Add("0");
dict.Add("R");
dict.Add("/Flags");
dict.Add("32");
dict.Add("/FontBBox");
dict.Add("[");
dict.Add(((Int32)(font.bBoxLLx * factor)).ToString());
dict.Add(((Int32)(font.bBoxLLy * factor)).ToString());
dict.Add(((Int32)(font.bBoxURx * factor)).ToString());
dict.Add(((Int32)(font.bBoxURy * factor)).ToString());
dict.Add("]");
dict.Add("/Ascent");
dict.Add(((Int32)(font.ascent * factor)).ToString());
dict.Add("/Descent");
dict.Add(((Int32)(font.descent * factor)).ToString());
dict.Add("/ItalicAngle");
dict.Add("0");
dict.Add("/CapHeight");
dict.Add(((Int32)(font.capHeight * factor)).ToString());
dict.Add("/StemV");
dict.Add("79");
dict.Add(">>");
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
font.SetFontDescriptorObjNumber(obj.number);
}
private static int AddMetadataObject(
SortedDictionary <Int32, PDFobj> objects, Font font)
{
StringBuilder sb = new StringBuilder();
sb.Append("<?xpacket begin='\uFEFF' id=\"W5M0MpCehiHzreSzNTczkc9d\"?>\n");
sb.Append("<x:xmpmeta xmlns:x=\"adobe:ns:meta/\">\n");
sb.Append("<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\">\n");
sb.Append("<rdf:Description rdf:about=\"\" xmlns:xmpRights=\"http://ns.adobe.com/xap/1.0/rights/\">\n");
sb.Append("<xmpRights:UsageTerms>\n");
sb.Append("<rdf:Alt>\n");
sb.Append("<rdf:li xml:lang=\"x-default\">\n");
sb.Append(font.info);
sb.Append("</rdf:li>\n");
sb.Append("</rdf:Alt>\n");
sb.Append("</xmpRights:UsageTerms>\n");
sb.Append("</rdf:Description>\n");
sb.Append("</rdf:RDF>\n");
sb.Append("</x:xmpmeta>\n");
sb.Append("<?xpacket end=\"w\"?>");
byte[] xml = (new System.Text.UTF8Encoding()).GetBytes(sb.ToString());
// This is the metadata object
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Type");
dict.Add("/Metadata");
dict.Add("/Subtype");
dict.Add("/XML");
dict.Add("/Length");
dict.Add(xml.Length.ToString());
dict.Add(">>");
obj.SetStream(xml);
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
return(obj.number);
}
private void AddImage(
SortedDictionary <Int32, PDFobj> objects,
byte[] data,
byte[] alpha,
int imageType,
String colorSpace,
int bitsPerComponent)
{
if (alpha != null)
{
AddSoftMask(objects, alpha, "DeviceGray", 8);
}
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Type");
dict.Add("/XObject");
dict.Add("/Subtype");
dict.Add("/Image");
if (imageType == ImageType.JPG)
{
dict.Add("/Filter");
dict.Add("/DCTDecode");
}
else if (imageType == ImageType.PNG || imageType == ImageType.BMP)
{
dict.Add("/Filter");
dict.Add("/FlateDecode");
if (alpha != null)
{
dict.Add("/SMask");
dict.Add(objNumber.ToString());
dict.Add("0");
dict.Add("R");
}
}
dict.Add("/Width");
dict.Add(((int)w).ToString());
dict.Add("/Height");
dict.Add(((int)h).ToString());
dict.Add("/ColorSpace");
dict.Add("/" + colorSpace);
dict.Add("/BitsPerComponent");
dict.Add(bitsPerComponent.ToString());
if (colorSpace.Equals("DeviceCMYK"))
{
// If the image was created with Photoshop - invert the colors:
dict.Add("/Decode");
dict.Add("[");
dict.Add("1.0");
dict.Add("0.0");
dict.Add("1.0");
dict.Add("0.0");
dict.Add("1.0");
dict.Add("0.0");
dict.Add("1.0");
dict.Add("0.0");
dict.Add("]");
}
dict.Add("/Length");
dict.Add(data.Length.ToString());
dict.Add(">>");
obj.SetStream(data);
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
objNumber = obj.number;
}
internal static void Register(
SortedDictionary <Int32, PDFobj> objects,
Font font,
Stream inputStream)
{
int len = inputStream.ReadByte();
byte[] fontName = new byte[len];
inputStream.Read(fontName, 0, len);
font.name = System.Text.Encoding.UTF8.GetString(fontName, 0, len);
// Console.WriteLine(font.name);
len = GetInt24(inputStream);
byte[] fontInfo = new byte[len];
inputStream.Read(fontInfo, 0, len);
font.info = System.Text.Encoding.UTF8.GetString(fontInfo, 0, len);
// Console.WriteLine(font.info);
byte[] buf = new byte[GetInt32(inputStream)];
inputStream.Read(buf, 0, buf.Length);
Decompressor decompressor = new Decompressor(buf);
MemoryStream stream =
new MemoryStream(decompressor.GetDecompressedData());
font.unitsPerEm = GetInt32(stream);
font.bBoxLLx = GetInt32(stream);
font.bBoxLLy = GetInt32(stream);
font.bBoxURx = GetInt32(stream);
font.bBoxURy = GetInt32(stream);
font.ascent = GetInt32(stream);
font.descent = GetInt32(stream);
font.firstChar = GetInt32(stream);
font.lastChar = GetInt32(stream);
font.capHeight = GetInt32(stream);
font.underlinePosition = GetInt32(stream);
font.underlineThickness = GetInt32(stream);
len = GetInt32(stream);
font.advanceWidth = new int[len];
for (int i = 0; i < len; i++)
{
font.advanceWidth[i] = GetInt16(stream);
}
len = GetInt32(stream);
font.glyphWidth = new int[len];
for (int i = 0; i < len; i++)
{
font.glyphWidth[i] = GetInt16(stream);
}
len = GetInt32(stream);
font.unicodeToGID = new int[len];
for (int i = 0; i < len; i++)
{
font.unicodeToGID[i] = GetInt16(stream);
}
font.cff = (inputStream.ReadByte() == 'Y') ? true : false;
font.uncompressed_size = GetInt32(inputStream);
font.compressed_size = GetInt32(inputStream);
EmbedFontFile(objects, font, inputStream);
AddFontDescriptorObject(objects, font);
AddCIDFontDictionaryObject(objects, font);
AddToUnicodeCMapObject(objects, font);
// Type0 Font Dictionary
PDFobj obj = new PDFobj();
List <String> dict = obj.GetDict();
dict.Add("<<");
dict.Add("/Type");
dict.Add("/Font");
dict.Add("/Subtype");
dict.Add("/Type0");
dict.Add("/BaseFont");
dict.Add("/" + font.name);
dict.Add("/Encoding");
dict.Add("/Identity-H");
dict.Add("/DescendantFonts");
dict.Add("[");
dict.Add(font.GetCidFontDictObjNumber().ToString());
dict.Add("0");
dict.Add("R");
dict.Add("]");
dict.Add("/ToUnicode");
dict.Add(font.GetToUnicodeCMapObjNumber().ToString());
dict.Add("0");
dict.Add("R");
dict.Add(">>");
obj.number = MaxKey(objects.Keys) + 1;
objects.Add(obj.number, obj);
font.objNumber = obj.number;
}
