/**
<summary>Gets the direction corresponding to the given value.</summary>
*/
public static RotationEnum Get(
PdfInteger value
)
{
if(value == null)
return RotationEnum.Downward;
int normalizedValue = (int)(Math.Round(value.RawValue / 90d) % 4) * 90;
if(normalizedValue < 0)
{normalizedValue += 360 * (int)Math.Ceiling(-normalizedValue / 360d);}
return (RotationEnum)normalizedValue;
}
/// <summary>
/// Writes the specified value to the PDF stream.
/// </summary>
public void Write(PdfInteger value)
{
WriteSeparator(CharCat.Character);
_lastCat = CharCat.Character;
WriteRaw(value.Value.ToString(CultureInfo.InvariantCulture));
}
/**
* <summary>Loads the font data.</summary>
*/
private void Load(
OpenFontParser parser
)
{
glyphIndexes = parser.GlyphIndexes;
glyphKernings = parser.GlyphKernings;
glyphWidths = parser.GlyphWidths;
PdfDictionary baseDataObject = BaseDataObject;
// BaseFont.
baseDataObject[PdfName.BaseFont] = new PdfName(parser.FontName);
// Subtype.
baseDataObject[PdfName.Subtype] = PdfName.Type0;
// Encoding.
baseDataObject[PdfName.Encoding] = PdfName.IdentityH; //TODO: this is a simplification (to refine later).
// Descendant font.
PdfDictionary cidFontDictionary = new PdfDictionary(
new PdfName[] { PdfName.Type },
new PdfDirectObject[] { PdfName.Font }
); // CIDFont dictionary [PDF:1.6:5.6.3].
{
// Subtype.
PdfName subType;
switch (parser.OutlineFormat)
{
case OpenFontParser.OutlineFormatEnum.TrueType: subType = PdfName.CIDFontType2; break;
case OpenFontParser.OutlineFormatEnum.CFF: subType = PdfName.CIDFontType0; break;
default: throw new NotImplementedException();
}
cidFontDictionary[PdfName.Subtype] = subType;
// BaseFont.
cidFontDictionary[PdfName.BaseFont] = new PdfName(parser.FontName);
// CIDSystemInfo.
cidFontDictionary[PdfName.CIDSystemInfo] = new PdfDictionary(
new PdfName[]
{
PdfName.Registry,
PdfName.Ordering,
PdfName.Supplement
},
new PdfDirectObject[]
{
new PdfTextString("Adobe"),
new PdfTextString("Identity"),
PdfInteger.Get(0)
}
); // Generic predefined CMap (Identity-H/V (Adobe-Identity-0)) [PDF:1.6:5.6.4].
// FontDescriptor.
cidFontDictionary[PdfName.FontDescriptor] = Load_CreateFontDescriptor(parser);
// Encoding.
Load_CreateEncoding(baseDataObject, cidFontDictionary);
}
baseDataObject[PdfName.DescendantFonts] = new PdfArray(new PdfDirectObject[] { File.Register(cidFontDictionary) });
Load();
}
/// <summary>
/// Writes the specified value to the PDF stream.
/// </summary>
public void Write(PdfInteger value)
{
WriteSeparator(CharCat.Character);
this.lastCat = CharCat.Character;
WriteRaw(value.Value.ToString());
}
/**
* <summary>Serializes the xref stream entries into the stream body.</summary>
*/
private void Flush(
IOutputStream stream
)
{
// 1. Body.
PdfArray indexArray = new PdfArray();
int[] entryFieldSizes = new int[]
{
EntryField0Size,
GetFieldSize((int)stream.Length), // NOTE: We assume this xref stream is the last indirect object.
EntryField2Size
};
{
// Get the stream buffer!
IBuffer body = Body;
// Delete the old entries!
body.SetLength(0);
// Serializing the entries into the stream buffer...
int prevObjectNumber = -2; // Previous-entry object number.
foreach (XRefEntry entry in entries.Values)
{
int entryNumber = entry.Number;
if (entryNumber - prevObjectNumber != 1) // Current subsection terminated.
{
if (indexArray.Count > 0)
{
indexArray.Add(PdfInteger.Get(prevObjectNumber - ((PdfInteger)indexArray[indexArray.Count - 1]).IntValue + 1));
} // Number of entries in the previous subsection.
indexArray.Add(PdfInteger.Get(entryNumber)); // First object number in the next subsection.
}
prevObjectNumber = entryNumber;
switch (entry.Usage)
{
case XRefEntry.UsageEnum.Free:
body.Append((byte)FreeEntryType);
body.Append(NumberToByteArray(entry.Offset, entryFieldSizes[1]));
body.Append(NumberToByteArray(entry.Generation, entryFieldSizes[2]));
break;
case XRefEntry.UsageEnum.InUse:
body.Append((byte)InUseEntryType);
body.Append(NumberToByteArray(entry.Offset, entryFieldSizes[1]));
body.Append(NumberToByteArray(entry.Generation, entryFieldSizes[2]));
break;
case XRefEntry.UsageEnum.InUseCompressed:
body.Append((byte)InUseCompressedEntryType);
body.Append(NumberToByteArray(entry.StreamNumber, entryFieldSizes[1]));
body.Append(NumberToByteArray(entry.Offset, entryFieldSizes[2]));
break;
default:
throw new NotSupportedException();
}
}
indexArray.Add(PdfInteger.Get(prevObjectNumber - ((PdfInteger)indexArray[indexArray.Count - 1]).IntValue + 1)); // Number of entries in the previous subsection.
}
// 2. Header.
{
PdfDictionary header = Header;
header[PdfName.Index] = indexArray;
header[PdfName.Size] = PdfInteger.Get(File.IndirectObjects.Count + 1);
header[PdfName.W] = new PdfArray(
PdfInteger.Get(entryFieldSizes[0]),
PdfInteger.Get(entryFieldSizes[1]),
PdfInteger.Get(entryFieldSizes[2])
);
}
}
/**
* <summary>Creates the character code mapping for composite fonts.</summary>
*/
private void Load_CreateEncoding(
PdfDictionary font,
PdfDictionary cidFont
)
{
/*
* NOTE: Composite fonts map text shown by content stream strings through a 2-level encoding
* scheme:
* character code -> CID (character index) -> GID (glyph index)
* This works for rendering purposes, but if we want our text data to be intrinsically meaningful,
* we need a further mapping towards some standard character identification scheme (Unicode):
* Unicode <- character code -> CID -> GID
* Such mapping may be provided by a known CID collection or (in case of custom encodings like
* Identity-H) by an explicit ToUnicode CMap.
* CID -> GID mapping is typically identity, that is CIDS correspond to GIDS, so we don't bother
* about that. Our base encoding is Identity-H, that is character codes correspond to CIDs;
* however, sometimes a font maps multiple Unicode codepoints to the same GID (for example, the
* hyphen glyph may be associated to the hyphen (\u2010) and minus (\u002D) symbols), breaking
* the possibility to recover their original Unicode values once represented as character codes
* in content stream strings. In this case, we are forced to remap the exceeding codes and
* generate an explicit CMap (TODO: I tried to emit a differential CMap using the usecmap
* operator in order to import Identity-H as base encoding, but it failed in several engines
* (including Acrobat, Ghostscript, Poppler, whilst it surprisingly worked with pdf.js), so we
* have temporarily to stick with full CMaps).
*/
// Encoding [PDF:1.7:5.6.1,5.6.4].
PdfDirectObject encodingObject = PdfName.IdentityH;
SortedDictionary <ByteArray, int> sortedCodes;
{
codes = new BiDictionary <ByteArray, int>(glyphIndexes.Count);
int lastRemappedCharCodeValue = 0;
IList <int> removedGlyphIndexKeys = null;
foreach (KeyValuePair <int, int> glyphIndexEntry in glyphIndexes.ToList())
{
int glyphIndex = glyphIndexEntry.Value;
ByteArray charCode = new ByteArray(new byte[]
{
(byte)((glyphIndex >> 8) & 0xFF),
(byte)(glyphIndex & 0xFF)
});
// Checking for multiple Unicode codepoints which map to the same glyph index...
/*
* NOTE: In case the same glyph index maps to multiple Unicode codepoints, we are forced to
* alter the identity encoding creating distinct cmap entries for the exceeding codepoints.
*/
if (codes.ContainsKey(charCode))
{
if (glyphIndex == 0) // .notdef glyph already mapped.
{
if (removedGlyphIndexKeys == null)
{
removedGlyphIndexKeys = new List <int>();
}
removedGlyphIndexKeys.Add(glyphIndexEntry.Key);
continue;
}
// Assigning the new character code...
/*
* NOTE: As our base encoding is identity, we have to look for a value that doesn't
* collide with existing glyph indices.
*/
while (glyphIndexes.ContainsValue(++lastRemappedCharCodeValue))
{
;
}
charCode.Data[0] = (byte)((lastRemappedCharCodeValue >> 8) & 0xFF);
charCode.Data[1] = (byte)(lastRemappedCharCodeValue & 0xFF);
}
else if (glyphIndex == 0) // .notdef glyph.
{
DefaultCode = glyphIndexEntry.Key;
}
codes[charCode] = glyphIndexEntry.Key;
}
if (removedGlyphIndexKeys != null)
{
foreach (int removedGlyphIndexKey in removedGlyphIndexKeys)
{
glyphIndexes.Remove(removedGlyphIndexKey);
}
}
sortedCodes = new SortedDictionary <ByteArray, int>(codes);
if (lastRemappedCharCodeValue > 0) // Custom encoding.
{
string cmapName = "Custom";
bytes::IBuffer cmapBuffer = CMapBuilder.Build(
CMapBuilder.EntryTypeEnum.CID,
cmapName,
sortedCodes,
delegate(KeyValuePair <ByteArray, int> codeEntry)
{ return(glyphIndexes[codeEntry.Value]); }
);
encodingObject = File.Register(
new PdfStream(
new PdfDictionary(
new PdfName[]
{
PdfName.Type,
PdfName.CMapName,
PdfName.CIDSystemInfo
},
new PdfDirectObject[]
{
PdfName.CMap,
new PdfName(cmapName),
new PdfDictionary(
new PdfName[]
{
PdfName.Registry,
PdfName.Ordering,
PdfName.Supplement
},
new PdfDirectObject[]
{
PdfTextString.Get("Adobe"),
PdfTextString.Get("Identity"),
PdfInteger.Get(0)
}
)
}
),
cmapBuffer
)
);
}
}
font[PdfName.Encoding] = encodingObject; // Character-code-to-CID mapping.
cidFont[PdfName.CIDToGIDMap] = PdfName.Identity; // CID-to-glyph-index mapping.
// ToUnicode [PDF:1.6:5.9.2].
PdfDirectObject toUnicodeObject = null;
{
bytes::IBuffer toUnicodeBuffer = CMapBuilder.Build(
CMapBuilder.EntryTypeEnum.BaseFont,
null,
sortedCodes,
delegate(KeyValuePair <ByteArray, int> codeEntry)
{ return(codeEntry.Value); }
);
toUnicodeObject = File.Register(new PdfStream(toUnicodeBuffer));
}
font[PdfName.ToUnicode] = toUnicodeObject; // Character-code-to-Unicode mapping.
// Glyph widths.
PdfArray widthsObject = new PdfArray();
{
int lastGlyphIndex = -10;
PdfArray lastGlyphWidthRangeObject = null;
foreach (int glyphIndex in glyphIndexes.Values.OrderBy(x => x).ToList())
{
int width;
if (!glyphWidths.TryGetValue(glyphIndex, out width))
{
width = 0;
}
if (glyphIndex - lastGlyphIndex != 1)
{
widthsObject.Add(PdfInteger.Get(glyphIndex));
widthsObject.Add(lastGlyphWidthRangeObject = new PdfArray());
}
lastGlyphWidthRangeObject.Add(PdfInteger.Get(width));
lastGlyphIndex = glyphIndex;
}
}
cidFont[PdfName.W] = widthsObject; // Glyph widths.
}
public PdfObject ParseObject(List <PdfObject> knownObjects)
{
PdfObject obj = null;
long startPosition = _streamPosition;
do
{
SkipWhitespace();
byte character = PeekChar();
if (character == '%')
{
SkipComment();
}
else if (IsDigit(character))
{
IPdfElement objectID = ParseNumber();
SkipWhitespace();
IPdfElement objectGeneration = ParseNumber();
SkipWhitespace();
string token = ParseToken();
if (token == "obj")
{
SkipWhitespace();
IPdfElement element = ParseElement();
string endToken = ParseToken();
// Intercept streams
if (endToken == "stream")
{
PdfDictionary streamDict = element as PdfDictionary;
if (streamDict == null)
{
throw new Exception(string.Format("Stream after a not dictionary element at: {0}", _streamPosition));
}
SkipEndOfLine();
// Find the length of the stream
long length = -1;
if (streamDict.Values.ContainsKey("Length"))
{
length = PdfElementUtils.GetInt(streamDict.Values["Length"], -1);
if (length == -1 && streamDict.Values["Length"] is PdfObjectReference)
{
IPdfElement lenghtObj = SearchObjectID(knownObjects, ((PdfObjectReference)streamDict.Values["Length"]).ObjectID);
length = PdfElementUtils.GetInt(lenghtObj, -1);
}
}
if (length == -1)
{
byte lineFeed = 0x0A;
byte carriageReturn = 0x0D;
length = MeasureToMarkers(new char[][] {
new char[] { (char)carriageReturn, (char)lineFeed, 'e', 'n', 'd', 's', 't', 'r', 'e', 'a', 'm' },
new char[] { (char)lineFeed, 'e', 'n', 'd', 's', 't', 'r', 'e', 'a', 'm' },
new char[] { 'e', 'n', 'd', 's', 't', 'r', 'e', 'a', 'm', (char)lineFeed },
new char[] { 'e', 'n', 'd', 's', 't', 'r', 'e', 'a', 'm', (char)carriageReturn, (char)lineFeed },
});
}
// Get the stream
byte[] streamBody = GetRawData(length);
SkipEndOfLine();
endToken = ParseToken();
if (endToken != "endstream")
{
throw new Exception(string.Format("Expected \"endstream\" token, \"{0}\" found at: {1}", token, _streamPosition));
}
SkipWhitespace();
endToken = ParseToken();
PdfStream stream = new PdfStream();
stream.Dictionary = streamDict;
stream.Data = streamBody;
element = stream;
}
if (endToken == "endobj")
{
obj = new PdfObject();
obj.ObjectID = (int)((PdfInteger)objectID).Value;
obj.ObjectGeneration = (int)((PdfInteger)objectGeneration).Value;
obj.Data = element;
break;
}
}
}
else
{
long streamPosition = _streamPosition;
string token = ParseToken();
if (token == "startxref")
{
// TODO: PdfParser: Ignoring startxref for now
SkipEndOfLine();
SkipToEndOfLine();
SkipEndOfLine();
SkipToEndOfLine();
SkipEndOfLine();
SkipWhitespace();
continue;
}
if (token == "xref")
{
// TODO: PdfParser: Ignoring xref for now
SkipToEndOfLine();
SkipEndOfLine();
do
{
SkipWhitespace();
IPdfElement objNumber = ParseNumber();
SkipWhitespace();
objNumber = ParseNumber();
SkipEndOfLine();
PdfInteger refNumber = objNumber as PdfInteger;
for (int i = 0; i < refNumber.Value; i++)
{
SkipToEndOfLine();
SkipEndOfLine();
}
long currentPosition = _streamPosition;
IPdfElement testElem = ParseElement();
_streamPosition = currentPosition;
if ((testElem is PdfInteger) == false)
{
break;
}
} while (IsEndOfStream() == false);
continue;
}
if (token == "trailer")
{
// TODO: PdfParser: Ignoring trailer for now
SkipEndOfLine();
ParseElement();
SkipWhitespace();
SkipToEndOfLine();
SkipEndOfLine();
SkipToEndOfLine();
SkipEndOfLine();
SkipToEndOfLine();
SkipEndOfLine();
SkipWhitespace();
continue;
}
// Try to find an object marker
byte lineFeed = 0x0A;
byte carriageReturn = 0x0D;
long distToObject = MeasureToMarkers(new char[][] {
new char[] { ' ', 'o', 'b', 'j', (char)lineFeed },
new char[] { ' ', 'o', 'b', 'j', (char)carriageReturn, (char)lineFeed },
});
if (distToObject > 0)
{
// Object marker found, backtrack and retry
long originalPosition = _streamPosition;
_streamPosition += distToObject;
long marker = _streamPosition;
SkipWhitespaceBack();
if (_streamPosition == marker)
{
// Abort backtrack, skip garbage
_streamPosition = originalPosition + distToObject + 4;
continue;
}
marker = _streamPosition;
SkipDigitsBack();
if (_streamPosition == marker)
{
// Abort backtrack, skip garbage
_streamPosition = originalPosition + distToObject + 4;
continue;
}
marker = _streamPosition;
SkipWhitespaceBack();
if (_streamPosition == marker)
{
// Abort backtrack, skip garbage
_streamPosition = originalPosition + distToObject + 4;
continue;
}
marker = _streamPosition;
SkipDigitsBack();
if (_streamPosition == marker)
{
// Abort backtrack, skip garbage
_streamPosition = originalPosition + distToObject + 4;
continue;
}
NextChar();
}
else
{
// No more obj markers found, abort all.
_streamPosition = _stream.Length;
}
}
} while (IsEndOfStream() == false);
return(obj);
}
public SetLineCap(LineCapEnum value)
: base(OperatorKeyword, PdfInteger.Get((int)value))
{
}
/**
* <summary>Ends the content row.</summary>
* <param name="broken">Indicates whether this is the end of a paragraph.</param>
*/
private void EndRow(
bool broken
)
{
if (rowEnded)
{
return;
}
rowEnded = true;
List <RowObject> objects = currentRow.Objects;
double[] objectXOffsets = new double[objects.Count]; // Horizontal object displacements.
double wordSpace = 0; // Exceeding space among words.
double rowXOffset = 0; // Horizontal row offset.
// Horizontal alignment.
XAlignmentEnum xAlignment = this.xAlignment;
switch (xAlignment)
{
case XAlignmentEnum.Left:
break;
case XAlignmentEnum.Right:
rowXOffset = frame.Width - currentRow.Width;
break;
case XAlignmentEnum.Center:
rowXOffset = (frame.Width - currentRow.Width) / 2;
break;
case XAlignmentEnum.Justify:
if (currentRow.SpaceCount == 0 ||
broken) // NO spaces.
{
/* NOTE: This situation equals a simple left alignment. */
xAlignment = XAlignmentEnum.Left;
}
else // Spaces exist.
{
// Calculate the exceeding spacing among the words!
wordSpace = (frame.Width - currentRow.Width) / currentRow.SpaceCount;
// Define the horizontal offsets for justified alignment.
for (
int index = 1,
count = objects.Count;
index < count;
index++
)
{
/*
* NOTE: The offset represents the horizontal justification gap inserted at the left
* side of each object.
*/
objectXOffsets[index] = objectXOffsets[index - 1] + objects[index - 1].SpaceCount * wordSpace;
}
}
currentRow.WordSpaceAdjustment.Value = wordSpace;
break;
}
// Vertical alignment and translation.
for (
int index = objects.Count - 1;
index >= 0;
index--
)
{
RowObject obj = objects[index];
// Vertical alignment.
double objectYOffset = 0;
{
LineAlignmentEnum lineAlignment;
double lineRise;
{
object objectLineAlignment = obj.LineAlignment;
if (objectLineAlignment is Double)
{
lineAlignment = LineAlignmentEnum.BaseLine;
lineRise = (double)objectLineAlignment;
}
else
{
lineAlignment = (LineAlignmentEnum)objectLineAlignment;
lineRise = 0;
}
}
switch (lineAlignment)
{
case LineAlignmentEnum.Top:
/* NOOP */
break;
case LineAlignmentEnum.Middle:
objectYOffset = -(currentRow.Height - obj.Height) / 2;
break;
case LineAlignmentEnum.BaseLine:
objectYOffset = -(currentRow.BaseLine - obj.BaseLine - lineRise);
break;
case LineAlignmentEnum.Bottom:
objectYOffset = -(currentRow.Height - obj.Height);
break;
default:
throw new NotImplementedException("Line alignment " + lineAlignment + " unknown.");
}
}
IList <ContentObject> containedGraphics = obj.Container.Objects;
// Translation.
containedGraphics.Insert(
0,
new ModifyCTM(
1, 0, 0, 1,
objectXOffsets[index] + rowXOffset, // Horizontal alignment.
objectYOffset // Vertical alignment.
)
);
// Word spacing.
if (obj.Type == RowObject.TypeEnum.Text)
{
/*
* TODO: This temporary hack adjusts the word spacing in case of composite font.
* When DocumentComposer replaces BlockComposer, all the graphical properties of contents
* will be declared as styles and their composition will occur as a single pass without such
* ugly tweakings.
*/
ShowText showTextOperation = (ShowText)((Text)((LocalGraphicsState)containedGraphics[1]).Objects[1]).Objects[1];
if (showTextOperation is ShowAdjustedText)
{
PdfInteger wordSpaceObject = PdfInteger.Get((int)Math.Round(-wordSpace * 1000 * obj.Scale / obj.FontSize));
PdfArray textParams = (PdfArray)showTextOperation.Operands[0];
for (int textParamIndex = 1, textParamsLength = textParams.Count; textParamIndex < textParamsLength; textParamIndex += 2)
{
textParams[textParamIndex] = wordSpaceObject;
}
}
}
}
// Update the actual block height!
boundBox.Height = (float)(currentRow.Y + currentRow.Height);
// Update the actual block vertical location!
double yOffset;
switch (yAlignment)
{
case YAlignmentEnum.Bottom:
yOffset = frame.Height - boundBox.Height;
break;
case YAlignmentEnum.Middle:
yOffset = (frame.Height - boundBox.Height) / 2;
break;
case YAlignmentEnum.Top:
default:
yOffset = 0;
break;
}
boundBox.Y = (float)(frame.Y + yOffset);
// Discard the current row!
currentRow = null;
}
private PdfArray GetVerticalMetrics(int[] values)
{
if (values.Length == 0)
{
throw new ArgumentException("length of values must be > 0");
}
float scaling = 1000f / ttf.Header.UnitsPerEm;
long lastCid = values[0];
long lastW1Value = (long)Math.Round(-values[1] * scaling);
long lastVxValue = (long)Math.Round(values[2] * scaling / 2f);
long lastVyValue = (long)Math.Round(values[3] * scaling);
PdfArray inner = new PdfArray();
PdfArray outer = new PdfArray();
outer.Add(PdfInteger.Get(lastCid));
State state = State.FIRST;
for (int i = 4; i < values.Length; i += 4)
{
long cid = values[i];
if (cid == int.MinValue)
{
// no glyph for this cid
continue;
}
long w1Value = (long)Math.Round(-values[i + 1] * scaling);
long vxValue = (long)Math.Round(values[i + 2] * scaling / 2);
long vyValue = (long)Math.Round(values[i + 3] * scaling);
switch (state)
{
case State.FIRST:
if (cid == lastCid + 1 && w1Value == lastW1Value && vxValue == lastVxValue && vyValue == lastVyValue)
{
state = State.SERIAL;
}
else if (cid == lastCid + 1)
{
state = State.BRACKET;
inner = new PdfArray();
inner.Add(PdfInteger.Get(lastW1Value));
inner.Add(PdfInteger.Get(lastVxValue));
inner.Add(PdfInteger.Get(lastVyValue));
}
else
{
inner = new PdfArray();
inner.Add(PdfInteger.Get(lastW1Value));
inner.Add(PdfInteger.Get(lastVxValue));
inner.Add(PdfInteger.Get(lastVyValue));
outer.Add(inner);
outer.Add(PdfInteger.Get(cid));
}
break;
case State.BRACKET:
if (cid == lastCid + 1 && w1Value == lastW1Value && vxValue == lastVxValue && vyValue == lastVyValue)
{
state = State.SERIAL;
outer.Add(inner);
outer.Add(PdfInteger.Get(lastCid));
}
else if (cid == lastCid + 1)
{
inner.Add(PdfInteger.Get(lastW1Value));
inner.Add(PdfInteger.Get(lastVxValue));
inner.Add(PdfInteger.Get(lastVyValue));
}
else
{
state = State.FIRST;
inner.Add(PdfInteger.Get(lastW1Value));
inner.Add(PdfInteger.Get(lastVxValue));
inner.Add(PdfInteger.Get(lastVyValue));
outer.Add(inner);
outer.Add(PdfInteger.Get(cid));
}
break;
case State.SERIAL:
if (cid != lastCid + 1 || w1Value != lastW1Value || vxValue != lastVxValue || vyValue != lastVyValue)
{
outer.Add(PdfInteger.Get(lastCid));
outer.Add(PdfInteger.Get(lastW1Value));
outer.Add(PdfInteger.Get(lastVxValue));
outer.Add(PdfInteger.Get(lastVyValue));
outer.Add(PdfInteger.Get(cid));
state = State.FIRST;
}
break;
}
lastW1Value = w1Value;
lastVxValue = vxValue;
lastVyValue = vyValue;
lastCid = cid;
}
switch (state)
{
case State.FIRST:
inner = new PdfArray();
inner.Add(PdfInteger.Get(lastW1Value));
inner.Add(PdfInteger.Get(lastVxValue));
inner.Add(PdfInteger.Get(lastVyValue));
outer.Add(inner);
break;
case State.BRACKET:
inner.Add(PdfInteger.Get(lastW1Value));
inner.Add(PdfInteger.Get(lastVxValue));
inner.Add(PdfInteger.Get(lastVyValue));
outer.Add(inner);
break;
case State.SERIAL:
outer.Add(PdfInteger.Get(lastCid));
outer.Add(PdfInteger.Get(lastW1Value));
outer.Add(PdfInteger.Get(lastVxValue));
outer.Add(PdfInteger.Get(lastVyValue));
break;
}
return(outer);
}
private PdfArray GetWidths(int[] widths)
{
if (widths.Length == 0)
{
throw new ArgumentException("length of widths must be > 0");
}
float scaling = 1000f / ttf.Header.UnitsPerEm;
long lastCid = widths[0];
long lastValue = (long)Math.Round(widths[1] * scaling);
PdfArray inner = new PdfArray();
PdfArray outer = new PdfArray();
outer.Add(PdfInteger.Get(lastCid));
State state = State.FIRST;
for (int i = 2; i < widths.Length; i += 2)
{
long cid = widths[i];
long value = (long)Math.Round(widths[i + 1] * scaling);
switch (state)
{
case State.FIRST:
if (cid == lastCid + 1 && value == lastValue)
{
state = State.SERIAL;
}
else if (cid == lastCid + 1)
{
state = State.BRACKET;
inner = new PdfArray();
inner.Add(PdfInteger.Get(lastValue));
}
else
{
inner = new PdfArray();
inner.Add(PdfInteger.Get(lastValue));
outer.Add(inner);
outer.Add(PdfInteger.Get(cid));
}
break;
case State.BRACKET:
if (cid == lastCid + 1 && value == lastValue)
{
state = State.SERIAL;
outer.Add(inner);
outer.Add(PdfInteger.Get(lastCid));
}
else if (cid == lastCid + 1)
{
inner.Add(PdfInteger.Get(lastValue));
}
else
{
state = State.FIRST;
inner.Add(PdfInteger.Get(lastValue));
outer.Add(inner);
outer.Add(PdfInteger.Get(cid));
}
break;
case State.SERIAL:
if (cid != lastCid + 1 || value != lastValue)
{
outer.Add(PdfInteger.Get(lastCid));
outer.Add(PdfInteger.Get(lastValue));
outer.Add(PdfInteger.Get(cid));
state = State.FIRST;
}
break;
}
lastValue = value;
lastCid = cid;
}
switch (state)
{
case State.FIRST:
inner = new PdfArray();
inner.Add(PdfInteger.Get(lastValue));
outer.Add(inner);
break;
case State.BRACKET:
inner.Add(PdfInteger.Get(lastValue));
outer.Add(inner);
break;
case State.SERIAL:
outer.Add(PdfInteger.Get(lastCid));
outer.Add(PdfInteger.Get(lastValue));
break;
}
return(outer);
}
/// <summary>
/// Writes the specified value to the PDF stream.
/// </summary>
public void Write(PdfInteger value)
{
WriteSeparator(CharCat.Character);
_lastCat = CharCat.Character;
WriteRaw(value.Value.ToString(CultureInfo.InvariantCulture));
}
protected override void WriteIncremental()
{
// 1. Original content (header, body and previous trailer).
FileParser parser = file.Reader.Parser;
stream.Write(parser.Stream);
// 2. Body update (modified indirect objects insertion).
XRefEntry xrefStreamEntry;
{
// Create the xref stream!
/*
* NOTE: Incremental xref information structure comprises multiple sections; this update adds
* a new section.
*/
XRefStream xrefStream = new XRefStream(file);
// 2.1. Indirect objects.
IndirectObjects indirectObjects = file.IndirectObjects;
// 2.1.1. Modified indirect objects serialization.
XRefEntry prevFreeEntry = null;
/*
* NOTE: Any uncompressed indirect object will be compressed.
*/
ObjectStream objectStream = null;
/*
* NOTE: Any previously-compressed indirect object will have its original object stream
* updated through a new extension object stream.
*/
IDictionary <int, ObjectStream> extensionObjectStreams = new Dictionary <int, ObjectStream>();
int indirectObjectsPrecompressCount = indirectObjects.Count;
foreach (PdfIndirectObject indirectObject in new List <PdfIndirectObject>(indirectObjects.ModifiedObjects.Values))
{
if (indirectObject.IsCompressible())
{
if (objectStream == null ||
objectStream.Count >= ObjectStreamMaxEntryCount)
{
file.Register(objectStream = new ObjectStream());
}
indirectObject.Compress(objectStream);
}
prevFreeEntry = AddXRefEntry(
indirectObject,
xrefStream,
prevFreeEntry,
extensionObjectStreams
);
}
// 2.1.2. Additional object streams serialization.
for (int index = indirectObjectsPrecompressCount, limit = indirectObjects.Count; index < limit; index++)
{
prevFreeEntry = AddXRefEntry(
indirectObjects[index],
xrefStream,
prevFreeEntry,
null
);
}
if (prevFreeEntry != null)
{
prevFreeEntry.Offset = 0; // Links back to the first free object. NOTE: The first entry in the table (object number 0) is always free.
}
// 2.2. XRef stream.
UpdateTrailer(xrefStream.Header, stream);
xrefStream.Header[PdfName.Prev] = PdfInteger.Get((int)parser.RetrieveXRefOffset());
AddXRefEntry(
/*
* NOTE: This xref stream indirect object is purposely temporary (i.e. not registered into
* the file's indirect objects collection).
*/
new PdfIndirectObject(
file,
xrefStream,
xrefStreamEntry = new XRefEntry(indirectObjects.Count, 0, (int)stream.Length, XRefEntry.UsageEnum.InUse)
),
xrefStream,
null,
null
);
}
// 3. Tail.
WriteTail(xrefStreamEntry.Offset);
}
/**
* <summary>Creates the character code mapping for composite fonts.</summary>
*/
private void Load_CreateEncoding(
PdfDictionary font,
PdfDictionary cidFont
)
{
// CMap [PDF:1.6:5.6.4].
bytes::Buffer cmapBuffer = new bytes::Buffer();
cmapBuffer.Append(
"%!PS-Adobe-3.0 Resource-CMap\n"
+ "%%DocumentNeededResources: ProcSet (CIDInit)\n"
+ "%%IncludeResource: ProcSet (CIDInit)\n"
+ "%%BeginResource: CMap (Adobe-Identity-UCS)\n"
+ "%%Title: (Adobe-Identity-UCS Adobe Identity 0)\n"
+ "%%Version: 1\n"
+ "%%EndComments\n"
+ "/CIDInit /ProcSet findresource begin\n"
+ "12 dict begin\n"
+ "begincmap\n"
+ "/CIDSystemInfo\n"
+ "3 dict dup begin\n"
+ "/Registry (Adobe) def\n"
+ "/Ordering (Identity) def\n"
+ "/Supplement 0 def\n"
+ "end def\n"
+ "/CMapName /Adobe-Identity-UCS def\n"
+ "/CMapVersion 1 def\n"
+ "/CMapType 0 def\n"
+ "/WMode 0 def\n"
+ "2 begincodespacerange\n"
+ "<20> <20>\n"
+ "<0000> <19FF>\n"
+ "endcodespacerange\n"
+ glyphIndexes.Count + " begincidchar\n"
);
// ToUnicode [PDF:1.6:5.9.2].
bytes::Buffer toUnicodeBuffer = new bytes::Buffer();
toUnicodeBuffer.Append(
"/CIDInit /ProcSet findresource begin\n"
+ "12 dict begin\n"
+ "begincmap\n"
+ "/CIDSystemInfo\n"
+ "<< /Registry (Adobe)\n"
+ "/Ordering (UCS)\n"
+ "/Supplement 0\n"
+ ">> def\n"
+ "/CMapName /Adobe-Identity-UCS def\n"
+ "/CMapVersion 10.001 def\n"
+ "/CMapType 2 def\n"
+ "2 begincodespacerange\n"
+ "<20> <20>\n"
+ "<0000> <19FF>\n"
+ "endcodespacerange\n"
+ glyphIndexes.Count + " beginbfchar\n"
);
// CIDToGIDMap [PDF:1.6:5.6.3].
bytes::Buffer gIdBuffer = new bytes::Buffer();
gIdBuffer.Append((byte)0);
gIdBuffer.Append((byte)0);
int code = 0;
codes = new BiDictionary <ByteArray, int>(glyphIndexes.Count);
PdfArray widthsObject = new PdfArray(glyphWidths.Count);
foreach (KeyValuePair <int, int> glyphIndexEntry in glyphIndexes)
{
// Character code (unicode to codepoint) entry.
code++;
byte[] charCode = (glyphIndexEntry.Key == 32
? new byte[] { 32 }
: new byte[]
{
(byte)((code >> 8) & 0xFF),
(byte)(code & 0xFF)
});
codes[new ByteArray(charCode)] = glyphIndexEntry.Key;
// CMap entry.
cmapBuffer.Append("<");
toUnicodeBuffer.Append("<");
for (int charCodeBytesIndex = 0,
charCodeBytesLength = charCode.Length;
charCodeBytesIndex < charCodeBytesLength;
charCodeBytesIndex++
)
{
string hex = ((int)charCode[charCodeBytesIndex]).ToString("X2");
cmapBuffer.Append(hex);
toUnicodeBuffer.Append(hex);
}
cmapBuffer.Append("> " + code + "\n");
toUnicodeBuffer.Append("> <" + glyphIndexEntry.Key.ToString("X4") + ">\n");
// CID-to-GID entry.
int glyphIndex = glyphIndexEntry.Value;
gIdBuffer.Append((byte)((glyphIndex >> 8) & 0xFF));
gIdBuffer.Append((byte)(glyphIndex & 0xFF));
// Width.
int width;
if (!glyphWidths.TryGetValue(glyphIndex, out width))
{
width = 0;
}
else if (width > 1000)
{
width = 1000;
}
widthsObject.Add(PdfInteger.Get(width));
}
cmapBuffer.Append(
"endcidchar\n"
+ "endcmap\n"
+ "CMapName currentdict /CMap defineresource pop\n"
+ "end\n"
+ "end\n"
+ "%%EndResource\n"
+ "%%EOF"
);
PdfStream cmapStream = new PdfStream(cmapBuffer);
PdfDictionary cmapHead = cmapStream.Header;
cmapHead[PdfName.Type] = PdfName.CMap;
cmapHead[PdfName.CMapName] = new PdfName("Adobe-Identity-UCS");
cmapHead[PdfName.CIDSystemInfo] = new PdfDictionary(
new PdfName[]
{
PdfName.Registry,
PdfName.Ordering,
PdfName.Supplement
},
new PdfDirectObject[]
{
new PdfTextString("Adobe"),
new PdfTextString("Identity"),
PdfInteger.Get(0)
}
); // Generic predefined CMap (Identity-H/V (Adobe-Identity-0)) [PDF:1.6:5.6.4].
font[PdfName.Encoding] = File.Register(cmapStream);
PdfStream gIdStream = new PdfStream(gIdBuffer);
cidFont[PdfName.CIDToGIDMap] = File.Register(gIdStream);
cidFont[PdfName.W] = new PdfArray(new PdfDirectObject[] { PdfInteger.Get(1), widthsObject });
toUnicodeBuffer.Append(
"endbfchar\n"
+ "endcmap\n"
+ "CMapName currentdict /CMap defineresource pop\n"
+ "end\n"
+ "end\n"
);
PdfStream toUnicodeStream = new PdfStream(toUnicodeBuffer);
font[PdfName.ToUnicode] = File.Register(toUnicodeStream);
}
/**
* <summary>Retrieves the file information.</summary>
*/
public FileInfo ReadInfo()
{
//TODO:hybrid xref table/stream
Version version = Version.Get(parser.RetrieveVersion());
PdfDictionary trailer = null;
SortedDictionary <int, XRefEntry> xrefEntries = new SortedDictionary <int, XRefEntry>();
{
long sectionOffset = parser.RetrieveXRefOffset();
while (sectionOffset > -1)
{
// Move to the start of the xref section!
parser.Seek(sectionOffset);
PdfDictionary sectionTrailer;
if (parser.GetToken(1).Equals(Keyword.XRef)) // XRef-table section.
{
// Looping sequentially across the subsections inside the current xref-table section...
while (true)
{
/*
* NOTE: Each iteration of this block represents the scanning of one subsection.
* We get its bounds (first and last object numbers within its range) and then collect
* its entries.
*/
// 1. First object number.
parser.MoveNext();
if ((parser.TokenType == PostScriptParser.TokenTypeEnum.Keyword) &&
parser.Token.Equals(Keyword.Trailer)) // XRef-table section ended.
{
break;
}
else if (parser.TokenType != PostScriptParser.TokenTypeEnum.Integer)
{
throw new PostScriptParseException("Neither object number of the first object in this xref subsection nor end of xref section found.", parser);
}
// Get the object number of the first object in this xref-table subsection!
int startObjectNumber = (int)parser.Token;
// 2. Last object number.
parser.MoveNext();
if (parser.TokenType != PostScriptParser.TokenTypeEnum.Integer)
{
throw new PostScriptParseException("Number of entries in this xref subsection not found.", parser);
}
// Get the object number of the last object in this xref-table subsection!
int endObjectNumber = (int)parser.Token + startObjectNumber;
// 3. XRef-table subsection entries.
for (int index = startObjectNumber; index < endObjectNumber; index++)
{
if (xrefEntries.ContainsKey(index)) // Already-defined entry.
{
// Skip to the next entry!
parser.MoveNext(3);
continue;
}
// Get the indirect object offset!
int offset = (int)parser.GetToken(1);
// Get the object generation number!
int generation = (int)parser.GetToken(1);
// Get the usage tag!
XRefEntry.UsageEnum usage;
{
string usageToken = (string)parser.GetToken(1);
if (usageToken.Equals(Keyword.InUseXrefEntry, StringComparison.Ordinal))
{
usage = XRefEntry.UsageEnum.InUse;
}
else if (usageToken.Equals(Keyword.FreeXrefEntry, StringComparison.Ordinal))
{
usage = XRefEntry.UsageEnum.Free;
}
else
{
throw new PostScriptParseException("Invalid xref entry.", parser);
}
}
// Define entry!
xrefEntries[index] = new XRefEntry(
index,
generation,
offset,
usage
);
}
}
// Get the previous trailer!
sectionTrailer = (PdfDictionary)parser.ParsePdfObject(1);
}
else // XRef-stream section.
{
XRefStream stream = (XRefStream)parser.ParsePdfObject(3); // Gets the xref stream skipping the indirect-object header.
// XRef-stream subsection entries.
foreach (XRefEntry xrefEntry in stream.Values)
{
if (xrefEntries.ContainsKey(xrefEntry.Number)) // Already-defined entry.
{
continue;
}
// Define entry!
xrefEntries[xrefEntry.Number] = xrefEntry;
}
// Get the previous trailer!
sectionTrailer = stream.Header;
}
if (trailer == null)
{
trailer = sectionTrailer;
}
// Get the previous xref-table section's offset!
PdfInteger prevXRefOffset = (PdfInteger)sectionTrailer[PdfName.Prev];
sectionOffset = (prevXRefOffset != null ? prevXRefOffset.IntValue : -1);
}
}
return(new FileInfo(version, trailer, xrefEntries));
}
public SetTextRenderMode(
TextRenderModeEnum value
) : base(OperatorKeyword, PdfInteger.Get((int)value))
{
}
private static void HandleInteger(PdfInteger item, StringBuilder target)
{
target.Append(item.Value);
}
public Dictionary <char, string> ParseToUnicode()
{
var toUnicode = new Dictionary <char, string>();
long skip = MeasureToMarkers(new char[][] {
new char[] { 'b', 'e', 'g', 'i', 'n', 'c', 'm', 'a', 'p' },
});
_streamPosition = skip;
var stack = new List <IPdfElement>();
do
{
SkipWhitespace();
IPdfElement elem = ParseElement();
if (elem != null)
{
stack.Add(elem);
}
else
{
string token = ParseToken();
if (token == "begincodespacerange")
{
PdfInteger numCodespaces = stack.Last() as PdfInteger;
if (numCodespaces == null)
{
throw new Exception(string.Format("ParseToUnicode: \"begincodespacerange\" found without preceding count at: {0}", _streamPosition));
}
for (int i = 0; i < numCodespaces.Value; i++)
{
// Skip CodeSpaceRanges
SkipWhitespace();
PdfString strStart = ParseString();
SkipWhitespace();
PdfString strEnd = ParseString();
}
SkipWhitespace();
string endToken = ParseToken();
if (endToken != "endcodespacerange")
{
throw new Exception(string.Format("ParseToUnicode: Expected \"endcodespacerange\", found \"{0}\", at: {1}", endToken, _streamPosition));
}
}
else if (token == "beginbfrange")
{
PdfInteger numRanges = stack.Last() as PdfInteger;
if (numRanges == null)
{
throw new Exception(string.Format("ParseToUnicode: \"beginbfrange\" found without preceding count at: {0}", _streamPosition));
}
for (int i = 0; i < numRanges.Value; i++)
{
SkipWhitespace();
PdfString pdfStrStart = ParseString();
SkipWhitespace();
PdfString pdfStrEnd = ParseString();
SkipWhitespace();
IPdfElement pdfElemDest = ParseElement();
char chStart = ReencodeStringToUTF16BE(pdfStrStart.Value)[0];
char chEnd = ReencodeStringToUTF16BE(pdfStrEnd.Value)[0];
if (chStart == chEnd && pdfElemDest is PdfString)
{
string strDst = ReencodeStringToUTF16BE(((PdfString)pdfElemDest).Value);
toUnicode.Add(chStart, strDst);
continue;
}
if (chEnd > chStart && pdfElemDest is PdfString)
{
string strDst = ReencodeStringToUTF16BE(((PdfString)pdfElemDest).Value);
char[] chsDest = strDst.ToArray();
for (char c = chStart; c <= chEnd; c++)
{
toUnicode.Add(c, new string(chsDest));
chsDest[chsDest.Length - 1]++;
}
continue;
}
if (chEnd > chStart && pdfElemDest is PdfArray)
{
PdfArray array = pdfElemDest as PdfArray;
int length = chEnd - chStart;
for (int j = 0; j <= length; j++)
{
char c = (char)(chStart + j);
string strDst = ReencodeStringToUTF16BE(((PdfString)array.Values[j]).Value);
toUnicode.Add(c, strDst);
}
continue;
}
}
SkipWhitespace();
string endToken = ParseToken();
if (endToken != "endbfrange")
{
throw new Exception(string.Format("ParseToUnicode: Expected \"endbfrange\", found \"{0}\", at: {1}", endToken, _streamPosition));
}
}
else if (token == "beginbfchar")
{
PdfInteger numChars = stack.Last() as PdfInteger;
if (numChars == null)
{
throw new Exception(string.Format("ParseToUnicode: \"beginbfchar\" found without preceding count at: {0}", _streamPosition));
}
for (int i = 0; i < numChars.Value; i++)
{
SkipWhitespace();
PdfString pdfStrOrig = ParseString();
SkipWhitespace();
PdfString pdfStrDest = ParseString();
char chOrig = ReencodeStringToUTF16BE(pdfStrOrig.Value)[0];
string strDst = ReencodeStringToUTF16BE(((PdfString)pdfStrDest).Value);
toUnicode.Add(chOrig, strDst);
}
SkipWhitespace();
string endToken = ParseToken();
if (endToken != "endbfchar")
{
throw new Exception(string.Format("ParseToUnicode: Expected \"endbfchar\", found \"{0}\", at: {1}", endToken, _streamPosition));
}
}
else
{
// Ignore rest of tokens
}
}
} while (IsEndOfStream() == false);
return(toUnicode);
}
/**
* <summary>Parses the current PDF object [PDF:1.6:3.2].</summary>
*/
public virtual PdfDataObject ParsePdfObject()
{
switch (TokenType)
{
case TokenTypeEnum.Integer:
return(PdfInteger.Get((int)Token));
case TokenTypeEnum.Name:
return(new PdfName((string)Token, true));
case TokenTypeEnum.DictionaryBegin:
{
PdfDictionary dictionary = new PdfDictionary();
dictionary.Updateable = false;
while (true)
{
// Key.
MoveNext(); if (TokenType == TokenTypeEnum.DictionaryEnd)
{
break;
}
PdfName key = (PdfName)ParsePdfObject();
// Value.
MoveNext();
PdfDirectObject value = (PdfDirectObject)ParsePdfObject();
// Add the current entry to the dictionary!
if (dictionary.ContainsKey(key))
{
key = new PdfName(key.StringValue + "Dublicat");
}
dictionary[key] = value;
}
dictionary.Updateable = true;
return(dictionary);
}
case TokenTypeEnum.ArrayBegin:
{
PdfArray array = new PdfArray();
array.Updateable = false;
while (true)
{
// Value.
MoveNext(); if (TokenType == TokenTypeEnum.ArrayEnd)
{
break;
}
// Add the current item to the array!
array.Add((PdfDirectObject)ParsePdfObject());
}
array.Updateable = true;
return(array);
}
case TokenTypeEnum.Literal:
if (Token is DateTime)
{
return(PdfDate.Get((DateTime)Token));
}
else
{
return(new PdfTextString(Token == null ? null : Encoding.Pdf.Encode((string)Token)));
}
case TokenTypeEnum.Hex:
return(new PdfTextString((string)Token, PdfString.SerializationModeEnum.Hex));
case TokenTypeEnum.Real:
return(PdfReal.Get((double)Token));
case TokenTypeEnum.Boolean:
return(PdfBoolean.Get((bool)Token));
case TokenTypeEnum.Null:
return(null);
default:
throw new PostScriptParseException(String.Format("Unknown type beginning: '{0}'", Token), this);
}
}
/// <summary>
/// Writes the specified value to the PDF stream.
/// </summary>
public void Write(PdfInteger value)
{
WriteSeparator(CharCat.Character);
this.lastCat = CharCat.Character;
WriteRaw(value.Value.ToString());
}
public IndexedColor(int index)
: this(new PdfArray(new PdfDirectObject[] { PdfInteger.Get(index) }))
{
}
/**
* <summary>Creates the font descriptor.</summary>
*/
private PdfReference Load_CreateFontDescriptor(
OpenFontParser parser
)
{
PdfDictionary fontDescriptor = new PdfDictionary();
{
OpenFontParser.FontMetrics metrics = parser.Metrics;
// Type.
fontDescriptor[PdfName.Type] = PdfName.FontDescriptor;
// FontName.
fontDescriptor[PdfName.FontName] = BaseDataObject[PdfName.BaseFont];
// Flags [PDF:1.6:5.7.1].
FlagsEnum flags = 0;
if (metrics.IsFixedPitch)
{
flags |= FlagsEnum.FixedPitch;
}
if (metrics.IsCustomEncoding)
{
flags |= FlagsEnum.Symbolic;
}
else
{
flags |= FlagsEnum.Nonsymbolic;
}
fontDescriptor[PdfName.Flags] = PdfInteger.Get(Convert.ToInt32(flags));
// FontBBox.
fontDescriptor[PdfName.FontBBox] = new Rectangle(
new drawing::PointF(metrics.XMin * metrics.UnitNorm, metrics.YMin * metrics.UnitNorm),
new drawing::PointF(metrics.XMax * metrics.UnitNorm, metrics.YMax * metrics.UnitNorm)
).BaseDataObject;
// ItalicAngle.
fontDescriptor[PdfName.ItalicAngle] = PdfReal.Get(metrics.ItalicAngle);
// Ascent.
fontDescriptor[PdfName.Ascent] = PdfReal.Get(
metrics.STypoAscender == 0
? metrics.Ascender * metrics.UnitNorm
: (metrics.STypoLineGap == 0 ? metrics.SCapHeight : metrics.STypoAscender) * metrics.UnitNorm
);
// Descent.
fontDescriptor[PdfName.Descent] = PdfReal.Get(
metrics.STypoDescender == 0
? metrics.Descender * metrics.UnitNorm
: metrics.STypoDescender * metrics.UnitNorm
);
// CapHeight.
fontDescriptor[PdfName.CapHeight] = PdfReal.Get(metrics.SCapHeight * metrics.UnitNorm);
// StemV.
/*
* NOTE: '100' is just a rule-of-thumb value, 'cause I've still to solve the
* 'cvt' table puzzle (such a harsh headache!) for TrueType fonts...
* TODO:IMPL TrueType and CFF stemv real value to extract!!!
*/
fontDescriptor[PdfName.StemV] = PdfInteger.Get(100);
// FontFile.
fontDescriptor[PdfName.FontFile2] = File.Register(
new PdfStream(new bytes::Buffer(parser.FontData.ToByteArray()))
);
}
return(File.Register(fontDescriptor));
}
public static MonitorSpecifierEnum? Get(
PdfInteger code
)
{
if(code == null)
return MonitorSpecifierEnum.LargestDocumentWindowSection;
MonitorSpecifierEnum? monitorSpecifier = codes.GetKey(code);
if(!monitorSpecifier.HasValue)
throw new NotSupportedException("Monitor specifier unknown: " + code);
return monitorSpecifier;
}
/// <summary>
/// Prepares the security handler for encrypting the document.
/// </summary>
public void PrepareEncryption()
{
//#if !SILVERLIGHT
Debug.Assert(_document._securitySettings.DocumentSecurityLevel != PdfDocumentSecurityLevel.None);
int permissions = (int)Permission;
bool strongEncryption = _document._securitySettings.DocumentSecurityLevel == PdfDocumentSecurityLevel.Encrypted128Bit;
PdfInteger vValue;
PdfInteger length;
PdfInteger rValue;
if (strongEncryption)
{
vValue = new PdfInteger(2);
length = new PdfInteger(128);
rValue = new PdfInteger(3);
}
else
{
vValue = new PdfInteger(1);
length = new PdfInteger(40);
rValue = new PdfInteger(2);
}
if (String.IsNullOrEmpty(_userPassword))
{
_userPassword = "";
}
// Use user password twice if no owner password provided.
if (String.IsNullOrEmpty(_ownerPassword))
{
_ownerPassword = _userPassword;
}
// Correct permission bits
permissions |= (int)(strongEncryption ? (uint)0xfffff0c0 : (uint)0xffffffc0);
permissions &= unchecked ((int)0xfffffffc);
PdfInteger pValue = new PdfInteger(permissions);
Debug.Assert(_ownerPassword.Length > 0, "Empty owner password.");
byte[] userPad = PadPassword(_userPassword);
byte[] ownerPad = PadPassword(_ownerPassword);
_md5.Initialize();
_ownerKey = ComputeOwnerKey(userPad, ownerPad, strongEncryption);
byte[] documentID = PdfEncoders.RawEncoding.GetBytes(_document.Internals.FirstDocumentID);
InitWithUserPassword(documentID, _userPassword, _ownerKey, permissions, strongEncryption);
PdfString oValue = new PdfString(PdfEncoders.RawEncoding.GetString(_ownerKey, 0, _ownerKey.Length));
PdfString uValue = new PdfString(PdfEncoders.RawEncoding.GetString(_userKey, 0, _userKey.Length));
Elements[Keys.Filter] = new PdfName("/Standard");
Elements[Keys.V] = vValue;
Elements[Keys.Length] = length;
Elements[Keys.R] = rValue;
Elements[Keys.O] = oValue;
Elements[Keys.U] = uValue;
Elements[Keys.P] = pValue;
//#endif
}
/**
* Add a collection of pages at the specified position.
* <param name="index">Addition position. To append, use value -1.</param>
* <param name="pages">Collection of pages to add.</param>
*/
private void CommonAddAll <TPage>(int index, ICollection <TPage> pages) where TPage : Page
{
PdfDirectObject parent;
PdfDictionary parentData;
PdfDirectObject kids;
PdfArray kidsData;
int offset;
// Append operation?
if (index == -1) // Append operation.
{
// Get the parent tree node!
parent = BaseObject;
parentData = BaseDataObject;
// Get the parent's page collection!
kids = parentData[PdfName.Kids];
kidsData = (PdfArray)PdfObject.Resolve(kids);
offset = 0; // Not used.
}
else // Insert operation.
{
// Get the page currently at the specified position!
Page pivotPage = this[index];
// Get the parent tree node!
parent = pivotPage.BaseDataObject[PdfName.Parent];
parentData = (PdfDictionary)parent.Resolve();
// Get the parent's page collection!
kids = parentData[PdfName.Kids];
kidsData = (PdfArray)kids.Resolve();
// Get the insertion's relative position within the parent's page collection!
offset = kidsData.IndexOf(pivotPage.BaseObject);
}
// Adding the pages...
foreach (Page page in pages)
{
// Append?
if (index == -1) // Append.
{
// Append the page to the collection!
kidsData.Add(page.BaseObject);
}
else // Insert.
{
// Insert the page into the collection!
kidsData.Insert(offset++, page.BaseObject);
}
// Bind the page to the collection!
page.BaseDataObject[PdfName.Parent] = parent;
}
// Incrementing the pages counters...
do
{
// Get the page collection counter!
PdfInteger countObject = (PdfInteger)parentData[PdfName.Count];
// Increment the counter at the current level!
parentData[PdfName.Count] = PdfInteger.Get(countObject.IntValue + pages.Count);
// Iterate upward!
parent = parentData[PdfName.Parent];
parentData = (PdfDictionary)PdfObject.Resolve(parent);
} while (parent != null);
}
public virtual PdfObject Visit(
PdfInteger obj,
object data
)
{
return obj;
}
public static Render.OperationEnum? Get(
PdfInteger code
)
{
if(code == null)
return null;
Render.OperationEnum? operation = codes.GetKey(code);
if(!operation.HasValue)
throw new NotSupportedException("Operation unknown: " + code);
return operation;
}