private int[] getIndex(PDFDictionary dict)
{
PDFArray Index = dict["Index"] as PDFArray;
if (Index == null)
{
int[] ind = { 0, 0 };
PDFNumber size = dict["Size"] as PDFNumber;
if (size == null || size.GetValue() <= 0)
{
throw new InvalidDocumentException();
}
ind[1] = (int)size.GetValue();
return(ind);
}
int[] index = new int[Index.Count];
for (int i = 0; i < Index.Count; ++i)
{
PDFNumber number = Index[i] as PDFNumber;
if (number == null || number.GetValue() < 0)
{
throw new InvalidDocumentException();
}
index[i] = (int)number.GetValue();
}
return(index);
}
internal RotatingRectangle(PDFArray array, Page page)
{
_array = array;
_page = page;
if (array.Count != 8)
{
setDefault();
changeArray();
}
else
{
float[] arrayf = new float[8];
for (int i = 0; i < 8; ++i)
{
PDFNumber number = array[i] as PDFNumber;
if (number == null)
{
setDefault();
changeArray();
return;
}
arrayf[i] = (float)number.GetValue();
}
setFromArray(arrayf);
}
}
protected override bool isHitInRange(PDFArray limits, object key)
{
if (key.GetType() != System.Type.GetType("int"))
{
throw new ArgumentException("Key must have a integer type for NumberTree.");
}
int number = (int)key;
PDFNumber first = limits[0] as PDFNumber;
PDFNumber last = limits[1] as PDFNumber;
if (first != null && last != null)
{
int comp1 = ((int)first.GetValue()).CompareTo(number);
int comp2 = ((int)last.GetValue()).CompareTo(number);
if (comp1 <= 0 && comp2 >= 0)
{
return(true);
}
}
return(false);
}
protected override IPDFObject findItem(PDFArray array, object key)
{
if (array == null)
{
return(null);
}
int number = (int)key;
for (int i = 0; i < array.Count; i += 2)
{
PDFNumber val = array[i] as PDFNumber;
if (i + 2 < array.Count)
{
PDFNumber val_next = array[i + 2] as PDFNumber;
if (val != null && val_next != null &&
((int)val.GetValue()) <= number && number < ((int)val_next.GetValue()))
{
return(array[i + 1]);
}
}
else
{
if (val != null && ((int)val.GetValue()) <= number)
{
return(array[i + 1]);
}
}
}
return(null);
}
internal override float GetTextWidth(PDFString str, float fontSize)
{
PDFArray widths = GetDictionary()["Widths"] as PDFArray;
PDFNumber fc = GetDictionary()["FirstChar"] as PDFNumber;
int firstChar = 0;
if (fc != null)
{
firstChar = (int)fc.GetValue();
}
byte[] data = str.GetBytes();
float result = 0;
for (int i = 0; i < data.Length; ++i)
{
PDFNumber w = widths[data[i] - firstChar] as PDFNumber;
if (w != null)
{
return((float)(w.GetValue() * fontSize / 1000.0f));
}
}
return(result);
}
internal override float GetCharWidth(char c, float fontSize)
{
PDFArray widths = GetDictionary()["Widths"] as PDFArray;
if (widths != null)
{
PDFNumber fc = GetDictionary()["FirstChar"] as PDFNumber;
int firstChar = 0;
if (fc != null)
{
firstChar = (int)fc.GetValue();
}
int glyf = getGlyf(c);
PDFNumber w = widths[glyf - firstChar] as PDFNumber;
if (w != null)
{
return((float)(w.GetValue() * fontSize / 1000.0f));
}
}
else
{
StandardFonts font;
if (isStandardFont(out font))
{
IGlyfMetrics metrics = getStandardFontMetrics(font);
return(metrics.GetCharWidth(c) * fontSize / 1000.0f);
}
}
return(0);
}
internal static PDFDictionary Copy(PDFDictionary dict)
{
PDFDictionary newDict = new PDFDictionary();
PDFName type = dict["Type"] as PDFName;
if (type != null)
{
newDict.AddItem("Type", type.Clone());
}
PDFName s = dict["S"] as PDFName;
if (s != null)
{
newDict.AddItem("S", s.Clone());
}
PDFString p = dict["P"] as PDFString;
if (p != null)
{
newDict.AddItem("P", p.Clone());
}
PDFNumber st = dict["St"] as PDFNumber;
if (st != null)
{
newDict.AddItem("St", st.Clone());
}
return(newDict);
}
private void addCount()
{
PDFNumber count = _dictionary["Count"] as PDFNumber;
if (count == null || count.GetValue() >= 0)
{
_dictionary.AddItem("Count", new PDFNumber(Count));
}
}
private void readPermissions(PDFDictionary dictionary)
{
PDFNumber perms = dictionary["P"] as PDFNumber;
if (perms == null)
{
throw new PDFException();
}
_permission = (int)perms.GetValue();
}
private int getDefaultCharWidth()
{
PDFNumber dw = GetDictionary()["DW"] as PDFNumber;
if (dw != null)
{
return((int)dw.GetValue());
}
return(1000);
}
internal override float GetCharWidth(char c, float fontSize)
{
if (c < 32 || c > 255)
{
return(0);
}
PDFArray widths = GetDictionary()["Widths"] as PDFArray;
PDFNumber w = widths[c - 32] as PDFNumber;
return((float)w.GetValue() * fontSize / 1000.0f);
}
/// <summary>
/// Gets or sets the element at the specified index.
/// </summary>
/// <param name="index" href="http://msdn.microsoft.com/en-us/library/system.int32.aspx">The zero-based index of the element to get or set.</param>
/// <returns cref="PointF" href="http://msdn.microsoft.com/en-us/library/system.drawing.pointf.aspx">The element at the specified index.</returns>
public PointF this[int index]
{
get
{
if (index < 0 || index >= _array.Count / 2)
{
throw new IndexOutOfRangeException();
}
PDFNumber numberX = _array[index * 2] as PDFNumber;
PDFNumber numberY = _array[index * 2 + 1] as PDFNumber;
if (numberX == null)
{
numberX = new PDFNumber(0);
}
if (numberY == null)
{
numberY = new PDFNumber(0);
}
float numX = (float)numberX.GetValue();
float numY = (float)numberY.GetValue();
if (_page != null)
{
numX = numX - _page.PageRect.Left;
numY = _page.PageRect.Bottom - numY;
}
return(new PointF(numX, numY));
}
set
{
if (index < 0 || index >= _array.Count / 2)
{
throw new IndexOutOfRangeException();
}
if (_page != null)
{
value.X = value.X + _page.PageRect.Left;
value.Y = _page.PageRect.Bottom - value.Y;
}
_array.RemoveItem(index * 2);
_array.RemoveItem(index * 2);
_array.Insert(index * 2, new PDFNumber(value.Y));
_array.Insert(index * 2, new PDFNumber(value.X));
if (ChangedPointsArray != null)
{
ChangedPointsArray(this);
}
}
}
private float getRectValue(byte num)
{
PDFArray rect = _dictionary["Rect"] as PDFArray;
if (rect == null)
{
return(0);
}
PDFNumber val = rect[num] as PDFNumber;
if (val == null)
{
return(0);
}
return((float)val.GetValue());
}
internal override float GetTextWidth(PDFString str, float fontSize)
{
PDFArray widths = GetDictionary()["Widths"] as PDFArray;
float result = 0.0f;
byte[] buf = str.GetBytes();
for (int i = 0; i < buf.Length; ++i)
{
PDFNumber w = widths[buf[i] - 32] as PDFNumber;
if (w != null)
{
result += (float)w.GetValue();
}
}
result = result * fontSize / 1000.0f;
return(result);
}
private void readAlgorithmVersion(PDFDictionary dictionary)
{
PDFNumber version = dictionary["V"] as PDFNumber;
if (version != null)
{
int value = (int)version.GetValue();
if (value >= 0 && value <= 5)
{
_version = value;
}
else
{
throw new PDFUnsupportEncryptorException();
}
return;
}
_revision = 0;
}
internal static PDFDictionary Copy(PDFDictionary dict)
{
PDFDictionary newDict = new PDFDictionary();
PDFName type = dict["Type"] as PDFName;
if (type != null)
{
newDict.AddItem("Type", type.Clone());
}
PDFNumber count = dict["Count"] as PDFNumber;
if (count != null)
{
newDict.AddItem("Count", count.Clone());
}
PDFString title = dict["Title"] as PDFString;
if (title != null)
{
newDict.AddItem("Title", title.Clone());
}
PDFArray c = dict["C"] as PDFArray;
if (c != null)
{
newDict.AddItem("C", c.Clone());
}
PDFNumber f = dict["F"] as PDFNumber;
if (f != null)
{
newDict.AddItem("F", f.Clone());
}
//First, Last, Parent, Prev, Next, SE - do not
//Dest, A - need set after adding
return(newDict);
}
private void readKeyLength(PDFDictionary dictionary)
{
PDFNumber lenght = dictionary["Length"] as PDFNumber;
if (lenght != null)
{
int value = (int)lenght.GetValue();
if ((value >= 40 && value <= 128 && value % 8 == 0) || (value == 256 && _revision == 5))
{
_length = value;
}
else
{
throw new InvalidDocumentException();
}
return;
}
_length = 40;
}
private void addItem(PDFArray array, IPDFObject key, IPDFObject value)
{
if (array == null)
{
return;
}
int number = (int)(key as PDFNumber).GetValue();
for (int i = 0; i < array.Count; i += 2)
{
PDFNumber val = array[i] as PDFNumber;
if (i + 2 < array.Count)
{
PDFNumber val_next = array[i + 2] as PDFNumber;
if (val != null && val_next != null &&
((int)val.GetValue()) <= number && number < ((int)val_next.GetValue()))
{
array.Insert(i + 2, key);
array.Insert(i + 3, value);
return;
}
}
else
{
if (val != null && ((int)val.GetValue()) <= number)
{
array.AddItem(key);
array.AddItem(value);
return;
}
else
{
array.Insert(i, key);
array.Insert(i + 1, value);
return;
}
}
}
}
internal override float GetTextWidth(PDFString str, float fontSize)
{
PDFArray widths = GetDictionary()["Widths"] as PDFArray;
byte[] data = str.GetBytes();
float result = 0;
if (widths != null)
{
PDFNumber fc = GetDictionary()["FirstChar"] as PDFNumber;
int firstChar = 0;
if (fc != null)
{
firstChar = (int)fc.GetValue();
}
for (int i = 0; i < data.Length; ++i)
{
PDFNumber w = widths[data[i] - firstChar] as PDFNumber;
if (w != null)
{
result += (float)w.GetValue();
}
}
return(result * fontSize / 1000.0f);
}
StandardFonts font;
if (isStandardFont(out font))
{
IGlyfMetrics metrics = getStandardFontMetrics(font);
string tmp = ConvertFromFontEncoding(str);
for (int i = 0; i < tmp.Length; ++i)
{
result += metrics.GetCharWidth(tmp[i]);
}
}
return(result * fontSize / 1000.0f);
}
private int[] getW(PDFDictionary dict)
{
PDFArray W = dict["W"] as PDFArray;
if (W == null)
{
throw new InvalidDocumentException();
}
int[] w = { 1, 1, 1 };
for (int i = 0; i < W.Count; ++i)
{
PDFNumber number = W[i] as PDFNumber;
if (number != null && number.GetValue() >= 0)
{
w[i] = (int)number.GetValue();
}
}
return(w);
}
private void deleteItem(PDFArray array, IPDFObject key)
{
if (array == null)
{
return;
}
int number = (int)(key as PDFNumber).GetValue();
for (int i = 0; i < array.Count; i += 2)
{
PDFNumber val = array[i] as PDFNumber;
if (val != null && ((int)val.GetValue()) == number)
{
array.RemoveItem(i + 1);
array.RemoveItem(i);
return;
}
}
}
internal static PDFArray CopyArrayCoordinates(PDFArray source, RectangleF oldPageRect, RectangleF newPageRect, bool oldPageIsNull)
{
PDFArray arr = new PDFArray();
for (int i = 0; i < source.Count; ++i)
{
PDFNumber num = source[i] as PDFNumber;
if (num == null)
{
arr.AddItem(new PDFNumber(0));
}
else
{
double val = num.GetValue();
if (i % 2 == 0)//x
{
if (oldPageIsNull)
{
arr.AddItem(new PDFNumber(val + newPageRect.Left));
}
else
{
arr.AddItem(new PDFNumber(-oldPageRect.Left + val + newPageRect.Left));
}
}
else//y
{
if (oldPageIsNull)
{
arr.AddItem(new PDFNumber(newPageRect.Bottom - val));
}
else
{
arr.AddItem(new PDFNumber(newPageRect.Bottom - (oldPageRect.Bottom - val)));
}
}
}
}
return(arr);
}
private void readRevision(PDFDictionary dictionary)
{
PDFNumber revision = dictionary["R"] as PDFNumber;
if (revision != null)
{
int value = (int)revision.GetValue();
if (value >= 2 && value <= 5)
{
_revision = value;
}
if (_revision > 5)
{
throw new PDFUnsupportEncryptorException();
}
return;
}
throw new PDFException();
}
private uint getFlag(PDFDictionary dict)
{
PDFNumber ff = dict["Ff"] as PDFNumber;
if (ff == null)
{
PDFDictionary parent = dict["Parent"] as PDFDictionary;
if (parent != null)
{
ff = parent["Ff"] as PDFNumber;
}
}
uint flag = 0;
if (ff != null)
{
flag = (uint)ff.GetValue();
}
return(flag);
}
internal override float GetCharWidth(char c, float fontSize)
{
byte glyf = 0;
if (!_charset.TryGetValue(c, out glyf))
{
return(0);
}
PDFNumber firstChar = GetDictionary()["FirstChar"] as PDFNumber;
int f = (int)firstChar.GetValue();
PDFArray widths = GetDictionary()["Widths"] as PDFArray;
PDFNumber num = widths[glyf - f] as PDFNumber;
if (num != null)
{
return((float)(num.GetValue() * fontSize / 1000.0f));
}
return(0);
}
private void parsePrevAndXrefStm()
{
if (_xrefPositions.Count == 0)
{
PDFNumber Prev = _trailer["Prev"] as PDFNumber;
PDFNumber XRefStm = _trailer["XRefStm"] as PDFNumber;
if (XRefStm != null)
{
int val = (int)XRefStm.GetValue();
_trailer.RemoveItem("XRefStm");
_parsedXrefTables.Add(val);
parseXref(val);
}
if (Prev != null)
{
int val = (int)Prev.GetValue();
_trailer.RemoveItem("Prev");
_parsedXrefTables.Add(val);
parseXref(val);
}
}
}
private IPDFObject parseNumberOrLink(int firstByte)
{
bool succes;
if (_usedLastParsedNumber)
{
_usedLastParsedNumber = false;
if (!_lastParsedNumberIsInteger)
{
return(new PDFNumber(_lastParsedNumber));
}
if (isNumberPart(firstByte))
{
readLexeme(firstByte);
if (IsEOL(_lastParsedByte))
{
SkipEOL();
}
if (_lastParsedByte == 'R')
{
int second = CurrentLexemeToInteger(out succes);
if (!succes)
{
return(null);
}
_lastParsedByte = _stream.ReadByte();
return(new PDFLink(_xref, (int)_lastParsedNumber));
}
PDFNumber obj = new PDFNumber(_lastParsedNumber);
int number = CurrentLexemeToInteger(out succes);
if (!succes)
{
double n = CurrentLexemeToDouble(out succes);
if (!succes)
{
return(null);
}
_usedLastParsedNumber = true;
_lastParsedNumberIsInteger = false;
_lastParsedNumber = n;
}
else
{
_usedLastParsedNumber = true;
_lastParsedNumberIsInteger = true;
_lastParsedNumber = number;
}
return(obj);
}
else
{
return(new PDFNumber(_lastParsedNumber));;
}
}
else
{
readLexeme(firstByte);
if (IsEOL(_lastParsedByte))
{
SkipEOL();
}
if (!isNumberPart(_lastParsedByte))
{
double val = CurrentLexemeToDouble(out succes);
if (!succes)
{
return(null);
}
return(new PDFNumber(val));
}
int first = CurrentLexemeToInteger(out succes);
if (!succes)
{
double val = CurrentLexemeToDouble(out succes);
if (!succes)
{
return(null);
}
return(new PDFNumber(val));
}
readLexeme(_lastParsedByte);
if (IsEOL(_lastParsedByte))
{
SkipEOL();
}
if (_lastParsedByte == 'R')
{
int second = CurrentLexemeToInteger(out succes);
if (!succes)
{
return(null);
}
_lastParsedByte = _stream.ReadByte();
return(new PDFLink(_xref, first));
}
int number = CurrentLexemeToInteger(out succes);
if (!succes)
{
double n = CurrentLexemeToDouble(out succes);
if (!succes)
{
return(null);
}
_usedLastParsedNumber = true;
_lastParsedNumberIsInteger = false;
_lastParsedNumber = n;
}
else
{
_usedLastParsedNumber = true;
_lastParsedNumberIsInteger = true;
_lastParsedNumber = number;
}
return(new PDFNumber(first));
}
}
private void parseProperties(PDFArray arr, IDocumentEssential owner)
{
PDFNumber left, top;
float pageLeft = 0, pageBottom = 0;
if (_page != null)
{
RectangleF rect = _page.PageRect;
pageLeft = rect.Left;
pageBottom = rect.Bottom;
}
switch (_zoomMode)
{
case ZoomMode.FitBoundingVertical:
case ZoomMode.FitVertical:
left = arr[2] as PDFNumber;
if (left != null)
{
_left = (float)left.GetValue() - pageLeft;
}
break;
case ZoomMode.FitBoundingHorizontal:
case ZoomMode.FitHorizontal:
top = arr[2] as PDFNumber;
if (top != null)
{
_top = pageBottom - (float)top.GetValue();
}
break;
case ZoomMode.FitRectangle:
//left bottom right top
left = arr[2] as PDFNumber;
if (left != null)
{
_left = (float)left.GetValue() - pageLeft;
}
top = arr[5] as PDFNumber;
if (top != null)
{
_top = pageBottom - (float)top.GetValue();
}
PDFNumber bottom = arr[3] as PDFNumber;
PDFNumber right = arr[4] as PDFNumber;
if (bottom != null)
{
_height = pageBottom - _top - (float)bottom.GetValue();
}
if (right != null)
{
_width = (float)right.GetValue() - (_left + pageLeft);
}
break;
case ZoomMode.FitXYZ:
left = arr[2] as PDFNumber;
if (left != null)
{
_left = (float)left.GetValue() - pageLeft;
}
top = arr[3] as PDFNumber;
if (top != null)
{
_top = pageBottom - (float)top.GetValue();
}
PDFNumber zoom = arr[4] as PDFNumber;
if (zoom != null)
{
_zoom = (int)(zoom.GetValue() * 100);
}
break;
}
}
private int getGlyfWidth(ushort glyf)
{
PDFArray w = getWidthsArray();
int dw = getDefaultCharWidth();
if (w == null)
{
return(dw);
}
for (int i = 0; i < w.Count; ++i)
{
PDFNumber first = w[i] as PDFNumber;
if (first != null)
{
if (first.GetValue() > glyf)
{
return(dw);
}
if (first != null)
{
IPDFObject second = w[i + 1];
if (second is PDFNumber)
{
if (first.GetValue() <= glyf && glyf <= (second as PDFNumber).GetValue())
{
PDFNumber value = w[i + 2] as PDFNumber;
if (value != null)
{
return((int)value.GetValue());
}
return(dw);
}
else
{
i += 2;
}
}
else if (second is PDFArray)
{
int count = (second as PDFArray).Count;
if (first.GetValue() <= glyf && glyf <= first.GetValue() + count)
{
int index = glyf - (int)first.GetValue();
PDFNumber width = (second as PDFArray)[index] as PDFNumber;
if (width != null)
{
return((int)width.GetValue());
}
return(dw);
}
else
{
++i;
}
}
}
}
}
return(dw);
}
private void parseGenerationEntry(Entry entry)
{
PDFDictionaryStream dictStream = GetObject(entry.Offset) as PDFDictionaryStream;
if (dictStream != null)
{
PDFNumber n = dictStream.Dictionary["N"] as PDFNumber;
if (n == null)
{
return;
}
int count = (int)n.GetValue();
if (count <= 0)
{
return;
}
n = dictStream.Dictionary["First"] as PDFNumber;
if (n == null)
{
return;
}
int first = (int)n.GetValue();
if (first < 0)
{
return;
}
dictStream.Decode();
List <int> objects = new List <int>();
List <int> offsets = new List <int>();
Lexer lexer = new Lexer(dictStream.GetStream(), this, null, 512);
lexer.Position = 0;
for (int i = 0; i < count; ++i)
{
bool succes;
int objNo = lexer.ReadInteger(out succes);
if (!succes)
{
break;
}
int offset = lexer.ReadInteger(out succes);
if (!succes)
{
break;
}
objects.Add(objNo);
offsets.Add(offset);
}
int l = objects.Count;
for (int i = 0; i < l; ++i)
{
lexer.Position = offsets[i] + first;
IPDFObject obj = lexer.ReadObject();
if (obj == null)
{
obj = new PDFNull();
}
int index = objects[i];
if (index >= 0 && index < _entries.Count)
{
if (_entries[index] == null)
{
_entries[index] = new Entry(0, 0);
}
if (entry.Offset == _entries[index].Offset)
{
_entries[index].Object = obj;
}
}
}
}
}