private void SaveDocMDP(TPdfStream DataStream, TXRefSection XRef)
{
BeginDictionary(DataStream);
SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.SigRefName));
SaveKey(DataStream, TPdfToken.TransformMethodName, TPdfTokens.GetString(TPdfToken.DocMDPName));
SaveTransformParams(DataStream);
SaveKey(DataStream, TPdfToken.DigestMethodName, TPdfTokens.GetString(TPdfToken.MD5Name));
//This is a small hack. We don't have an object model of the pdf file able to compute the object hash,
//and it is not needed anyway for Acrobat >=7 (and <6 does not allow MDP anyway).
//But we need to write something here, or acrobat will complain the document is not PDF/SigQ complaint.
byte[] MDPHash = new byte[16];
string MDPHashStr = PdfConv.ToHexString(MDPHash, true);
Write(DataStream, TPdfTokens.GetString(TPdfToken.DigestValueName));
long StartMDPHash = DataStream.Position;
Write(DataStream, MDPHashStr);
string LocationString =
TPdfTokens.GetString(TPdfToken.OpenArray) +
String.Format(CultureInfo.InvariantCulture, "{0} {1}", StartMDPHash, MDPHashStr.Length) +
TPdfTokens.GetString(TPdfToken.CloseArray);
SaveKey(DataStream, TPdfToken.DigestLocationName, LocationString);
EndDictionary(DataStream);
}
public override void WriteFontObject(TPdfStream DataStream, TXRefSection XRef)
{
XRef.SetObjectOffset(FontObjId, DataStream);
TIndirectRecord.SaveHeader(DataStream, FontObjId);
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.FontName));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.SubtypeName, FontType());
TDictionaryRecord.SaveKey(DataStream, TPdfToken.BaseFontName, GetFontName(Embed, Subset));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.EncodingName, EncodingType());
long fc = FirstChar; if (fc < 0)
{
fc = 0;
}
TDictionaryRecord.SaveKey(DataStream, TPdfToken.FirstCharName, PdfConv.LongToString(fc));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.LastCharName, PdfConv.LongToString(LastChar));
XRef.SetObjectOffset(FontDescriptorId, DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.FontDescriptorName, TIndirectRecord.GetCallObj(FontDescriptorId));
SaveWidths(DataStream);
TDictionaryRecord.EndDictionary(DataStream);
TIndirectRecord.SaveTrailer(DataStream);
SaveFontDescriptor(DataStream, FontDescriptorId, XRef, Embed, Subset);
}
public void WriteGStateObject(TPdfStream DataStream, TXRefSection XRef)
{
XRef.SetObjectOffset(GStateObjId, DataStream);
TIndirectRecord.SaveHeader(DataStream, GStateObjId);
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.ExtGStateName));
TDictionaryRecord.SaveKey(DataStream, Operator, PdfConv.CoordsToString(Alpha / 255.0));
if (SMask != null)
{
SMaskObjId = XRef.GetNewObject(DataStream);
TDictionaryRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.SMaskName));
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.MaskName));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.SName, TPdfTokens.GetString(TPdfToken.AlphaName));
TDictionaryRecord.Write(DataStream, TPdfTokens.GetString(TPdfToken.GName) + " ");
TIndirectRecord.CallObj(DataStream, SMaskObjId);
TDictionaryRecord.EndDictionary(DataStream);
}
TDictionaryRecord.EndDictionary(DataStream);
TIndirectRecord.SaveTrailer(DataStream);
if (SMask != null)
{
WriteSMaskObject(DataStream, XRef);
}
}
public void WritePatternObject(TPdfStream DataStream, TXRefSection XRef)
{
byte[] PatternDef = GetPatternDef();
XRef.SetObjectOffset(PatternObjId, DataStream);
TIndirectRecord.SaveHeader(DataStream, PatternObjId);
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.PatternName));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.PatternTypeName, "1");
TDictionaryRecord.SaveKey(DataStream, TPdfToken.PaintTypeName, "1");
TDictionaryRecord.SaveKey(DataStream, TPdfToken.TilingTypeName, "2");
TDictionaryRecord.SaveKey(DataStream, TPdfToken.BBoxName, String.Format(CultureInfo.InvariantCulture, "[0 0 {0} {1}]", ImgWidth, ImgHeight));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.XStepName, PdfConv.CoordsToString(ImgWidth));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.YStepName, PdfConv.CoordsToString(ImgHeight));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.MatrixName, PdfConv.ToString(PatternMatrix, true));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.LengthName, PatternDef.Length);
TDictionaryRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.ResourcesName));
TDictionaryRecord.BeginDictionary(DataStream);
TPdfBaseRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.XObjectName));
TDictionaryRecord.BeginDictionary(DataStream);
ImageDef.WriteImage(DataStream, XRef);
TDictionaryRecord.EndDictionary(DataStream);
TDictionaryRecord.EndDictionary(DataStream);
TDictionaryRecord.EndDictionary(DataStream);
TStreamRecord.BeginSave(DataStream);
DataStream.Write(PatternDef);
TStreamRecord.EndSave(DataStream);
TIndirectRecord.SaveTrailer(DataStream);
ImageDef.WriteImageObject(DataStream, XRef);
}
private string GetRadialCoords()
{
StringBuilder Result = new StringBuilder();
real x0 = CenterPoint.X;
real y0 = CenterPoint.Y;
PointF corner = Coords.Location;
if (Math.Abs(CenterPoint.X - Coords.X) < Math.Abs(CenterPoint.X - Coords.Right))
{
corner.X = Coords.Right;
}
if (Math.Abs(CenterPoint.Y - Coords.Y) < Math.Abs(CenterPoint.Y - Coords.Bottom))
{
corner.Y = Coords.Bottom;
}
real r = (real)Math.Sqrt(Math.Pow(corner.X - CenterPoint.X, 2) + Math.Pow(corner.Y - CenterPoint.Y, 2));
Result.Append(TPdfTokens.GetString(TPdfToken.OpenArray));
Result.Append(PdfConv.CoordsToString(x0)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(y0)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(0)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(x0)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(y0)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(r)); Result.Append(" ");
Result.Append(TPdfTokens.GetString(TPdfToken.CloseArray));
return(Result.ToString());
}
protected override void SaveExtraKeys(TPdfStream DataStream, TXRefSection XRef, bool Compress)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.FunctionsName,
TPdfTokens.GetString(TPdfToken.OpenArray) + FunctionCalls(DataStream, XRef) + TPdfTokens.GetString(TPdfToken.CloseArray));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.BoundsName, PdfConv.ToString(Bounds, true));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.EncodeName, PdfConv.ToString(Encode, true));
}
private static void WriteCommonXObject(TPdfStream DataStream, RectangleF Rect, string StreamContents)
{
SaveKey(DataStream, TPdfToken.LengthName, StreamContents.Length);
SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.XObjectName));
SaveKey(DataStream, TPdfToken.SubtypeName, TPdfTokens.GetString(TPdfToken.FormName));
SaveKey(DataStream, TPdfToken.FormTypeName, 1);
SaveKey(DataStream, TPdfToken.MatrixName, "[1.0 0.0 0.0 1.0 0.0 0.0]"); //Standard drawing matrix
SaveKey(DataStream, TPdfToken.BBoxName, PdfConv.ToRectangleWH(new RectangleF(0, 0, Rect.Width, Rect.Height), true));
}
private string GetCoords()
{
StringBuilder Result = new StringBuilder();
Result.Append(TPdfTokens.GetString(TPdfToken.OpenArray));
Result.Append(PdfConv.CoordsToString(RotatedCoords.Left)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(RotatedCoords.Top)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(RotatedCoords.Right)); Result.Append(" ");
Result.Append(PdfConv.CoordsToString(RotatedCoords.Bottom));
Result.Append(TPdfTokens.GetString(TPdfToken.CloseArray));
return(Result.ToString());
}
protected override void SaveExtraKeys(TPdfStream DataStream, TXRefSection XRef, bool Compress)
{
Debug.Assert(DataStream.Compress == false); //It shouldn't be turned on at this place.
TDictionaryRecord.SaveKey(DataStream, TPdfToken.LengthName, FunctionData(Compress).Length.ToString(CultureInfo.InvariantCulture));
if (NeedsCompression(Compress))
{
TStreamRecord.SetFlateDecode(DataStream);
}
TDictionaryRecord.SaveKey(DataStream, TPdfToken.SizeName, PdfConv.ToString(Size, true));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.BitsPerSampleName, 8);
}
public void Select(TPdfStream DataStream, real FontSize, ref string LastFont)
{
UsedInDoc = true;
string NewFont = TPdfTokens.GetString(TPdfToken.FontPrefix) + Id.ToString(CultureInfo.InvariantCulture) + " " +
PdfConv.CoordsToString(FontSize) + " " + TPdfTokens.GetString(TPdfToken.CommandFont);
if (LastFont == NewFont)
{
return;
}
LastFont = NewFont;
TPdfBaseRecord.WriteLine(DataStream, NewFont);
}
internal string GetSMask()
{
StringBuilder Result = new StringBuilder();
Result.Append(TPdfTokens.GetString(TPdfToken.PatternName)); Result.Append(" ");
Result.Append(TPdfTokens.GetString(TPdfToken.Commandcs)); Result.Append(" ");
Result.Append(TPdfTokens.GetString(TPdfToken.GradientPrefix));
Result.Append(Convert.ToString(PatternId, CultureInfo.InvariantCulture)); Result.Append(" ");
Result.Append(TPdfTokens.GetString(TPdfToken.Commandscn)); Result.Append(" ");
Result.Append(PdfConv.ToRectangleWH(Coords, false)); Result.Append(" ");
Result.Append(TPdfTokens.GetString(TPdfToken.CommandRectangle)); Result.Append(" ");
Result.Append(TPdfTokens.GetString(TPdfToken.CommandFillPath));
return(Result.ToString());
}
private void SaveWidths(TPdfStream DataStream)
{
//Docs say it is prefered to save as indirect object, but acrobat writes it directly.
//Widths object.
TPdfBaseRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.WidthsName) + " " + TPdfTokens.GetString(TPdfToken.OpenArray));
int fc = FirstChar; if (fc < 0)
{
fc = 0;
}
for (int i = fc; i <= LastChar; i++) //characters on winansi are NOT the same as in low byte unicode. For example char 0x92 (146) is a typographic ' in winansi, not defined in unicode.
{
int z = (int)CharUtils.GetUniFromWin1252_PDF((byte)i);
TPdfBaseRecord.WriteLine(DataStream, PdfConv.CoordsToString(Math.Round(FTrueTypeData.GlyphWidth(FTrueTypeData.Glyph(z, false))))); //don't log the erorr here, character doesn't need to exist.
}
TPdfBaseRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.CloseArray));
}
internal override void SaveToStream(TPdfStream DataStream, TXRefSection XRef)
{
BeginSaveToStream(DataStream, XRef);
SaveKey(DataStream, TPdfToken.SubtypeName, "/" + FCommentProperties.CommentType.ToString());
SaveUnicodeKey(DataStream, TPdfToken.ContentsName, FComment);
SaveKey(DataStream, TPdfToken.NameName, "/" + FCommentProperties.Icon.ToString());
SaveKey(DataStream, TPdfToken.CAName, PdfConv.DoubleToString(FCommentProperties.Opacity));
if (FCommentProperties.CommentType != TPdfCommentType.Text)
{
Color aColor = FCommentProperties.BackgroundColor;
string BgColor = TPdfTokens.GetString(TPdfToken.OpenArray) +
PdfConv.CoordsToString(aColor.R / 255.0) + " " +
PdfConv.CoordsToString(aColor.G / 255.0) + " " +
PdfConv.CoordsToString(aColor.B / 255.0) +
TPdfTokens.GetString(TPdfToken.CloseArray);
SaveKey(DataStream, TPdfToken.ICName, BgColor);
}
EndSaveToStream(DataStream, XRef);
}
internal void GoReal(byte[] AfterSign, int PKCSSize)
{
Debug.Assert(HelperStream != null);
Signer.Write(AfterSign, 0, AfterSign.Length);
if (PKCSSize + AfterSign.Length > SignOffset)
{
PdfMessages.ThrowException(PdfErr.ErrSigningLengthToSmall);
}
byte[] PaddedByteCount = Pad(0x20, SignOffset - (PKCSSize + AfterSign.Length));
Signer.Write(PaddedByteCount, 0, PaddedByteCount.Length);
byte[] bt = HelperStream.CurrentStream.ToArray();
HelperStream.Dispose();
HelperStream = null;
Signer.Write(bt, 0, bt.Length);
byte[] sg = Signer.GetSignature();
byte[] hexsg = TPdfBaseRecord.Coder.GetBytes("<" + PdfConv.ToHexString(sg, false));
FDataStream.Write(hexsg, 0, hexsg.Length);
if (hexsg.Length > PKCSSize - 1)
{
PdfMessages.ThrowException(PdfErr.ErrSigningLengthToSmall);
}
for (int i = hexsg.Length; i < PKCSSize - 1; i++) //pad the certificate.
{
FDataStream.WriteByte(0);
}
FDataStream.Write(TPdfBaseRecord.Coder.GetBytes(">"), 0, 1);
FDataStream.Write(AfterSign, 0, AfterSign.Length);
FDataStream.Write(PaddedByteCount, 0, PaddedByteCount.Length); //Pad the whole thing.
FDataStream.Write(bt, 0, bt.Length);
}
internal static void SaveToStream(TPdfStream DataStream, int PageListId, TPageInfo PageInfo, TAcroFormRecord AcroForm, TXRefSection XRef, int PageNumber, int PageCount)
{
XRef.SetObjectOffset(PageInfo.Id, DataStream);
TIndirectRecord.SaveHeader(DataStream, PageInfo.Id);
BeginDictionary(DataStream);
SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.PageName));
SaveKey(DataStream, TPdfToken.ParentName, TIndirectRecord.GetCallObj(PageListId));
SaveKey(DataStream, TPdfToken.ContentsName, TIndirectRecord.GetCallObj(PageInfo.Contents.Id));
SaveKey(DataStream, TPdfToken.MediaBoxName,
TPdfTokens.GetString(TPdfToken.OpenArray) +
"0 0 " +
PdfConv.CoordsToString(PageInfo.Contents.PageSize.Width * 72 / 100) + " " +
PdfConv.CoordsToString(PageInfo.Contents.PageSize.Height * 72 / 100) +
TPdfTokens.GetString(TPdfToken.CloseArray)
);
if (PageInfo.Annots.HasAnnots(AcroForm, PageNumber, PageCount))
{
SaveKey(DataStream, TPdfToken.AnnotsName, PageInfo.Annots.GetCallArray(DataStream, XRef, AcroForm, PageNumber, PageCount));
}
EndDictionary(DataStream);
TIndirectRecord.SaveTrailer(DataStream);
}
public static string ToString(int[] Source, bool AddBrackets)
{
StringBuilder Result = new StringBuilder();
if (AddBrackets)
{
Result.Append(TPdfTokens.GetString(TPdfToken.OpenArray));
}
for (int i = 0; i < Source.Length; i++)
{
Result.Append(PdfConv.LongToString(Source[i]));
if (i < Source.Length - 1)
{
Result.Append(" ");
}
}
if (AddBrackets)
{
Result.Append(TPdfTokens.GetString(TPdfToken.CloseArray));
}
return(Result.ToString());
}
internal static void SaveToStream(TPdfStream DataStream, TXRefSection XRef, int CatalogId, int InfoId)
{
TPdfBaseRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.Trailer));
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.SizeName, XRef.Count);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.RootName, TIndirectRecord.GetCallObj(CatalogId));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.InfoName, TIndirectRecord.GetCallObj(InfoId));
Byte[] FileIdBytes = Guid.NewGuid().ToByteArray();
string FileId = PdfConv.ToHexString(FileIdBytes, true);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.IDName,
TPdfTokens.GetString(TPdfToken.OpenArray) +
FileId + " " + FileId +
TPdfTokens.GetString(TPdfToken.CloseArray));
TDictionaryRecord.EndDictionary(DataStream);
TPdfBaseRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.StartXRef));
TPdfBaseRecord.WriteLine(DataStream, XRef.StartPosition.ToString(CultureInfo.InvariantCulture));
TPdfBaseRecord.WriteLine(DataStream, TPdfTokens.GetString(TPdfToken.Eof));
}
public void WriteFunctionObject(TPdfStream DataStream, TXRefSection XRef, bool Compress)
{
XRef.SetObjectOffset(GetFunctionObjId(DataStream, XRef), DataStream);
TIndirectRecord.SaveHeader(DataStream, FunctionObjId);
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.FunctionTypeName, FunctionType);
if (Domain != null)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.DomainName, PdfConv.ToString(Domain, true));
}
if (Range != null)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.RangeName, PdfConv.ToString(Range, true));
}
SaveExtraKeys(DataStream, XRef, Compress);
TDictionaryRecord.EndDictionary(DataStream);
SaveStream(DataStream, XRef, Compress);
TIndirectRecord.SaveTrailer(DataStream);
}
public static void SaveKey(TPdfStream DataStream, TPdfToken Tk, int Value)
{
SaveKey(DataStream, Tk, PdfConv.LongToString(Value));
}
internal void SaveBookmarkObjects(TPdfStream DataStream, TXRefSection XRef, TBookmarkList bmks, int ParentId, int ObjectId, ref int FirstId, ref int LastId, ref int AllOpenCount)
{
int PreviousId = -1;
for (int i = 0; i < bmks.Count; i++)
{
TBookmark b = bmks[i];
AllOpenCount++;
int NextId = -1;
if (i < bmks.Count - 1)
{
NextId = XRef.GetNewObject(DataStream);
}
LastId = ObjectId;
if (FirstId == -1)
{
FirstId = ObjectId;
}
int FirstChildId = -1;
int LastChildId = -1;
int ChildOpenCount = 0;
if (b.FChildren.Count > 0)
{
FirstChildId = XRef.GetNewObject(DataStream);
int ChildLastId = -1;
SaveBookmarkObjects(DataStream, XRef, b.FChildren, ObjectId, FirstChildId, ref FirstId, ref ChildLastId, ref ChildOpenCount);
if (!b.ChildrenCollapsed)
{
AllOpenCount += ChildOpenCount;
}
LastChildId = ChildLastId;
}
XRef.SetObjectOffset(ObjectId, DataStream);
TIndirectRecord.SaveHeader(DataStream, ObjectId);
TDictionaryRecord.BeginDictionary(DataStream);
TDictionaryRecord.SaveUnicodeKey(DataStream, TPdfToken.TitleName, b.Title);
TDictionaryRecord.SaveKey(DataStream, TPdfToken.ParentName, TIndirectRecord.GetCallObj(ParentId));
if (PreviousId >= 0)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.PrevName, TIndirectRecord.GetCallObj(PreviousId));
}
if (NextId >= 0)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.NextName, TIndirectRecord.GetCallObj(NextId));
}
if (FirstChildId >= 0)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.FirstName, TIndirectRecord.GetCallObj(FirstChildId));
}
if (LastChildId >= 0)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.LastName, TIndirectRecord.GetCallObj(LastChildId));
}
if (ChildOpenCount > 0)
{
if (b.ChildrenCollapsed)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.CountName, -ChildOpenCount);
}
else
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.CountName, ChildOpenCount);
}
}
if (b.Destination != null)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.DestName, GetDestStr(b.Destination));
}
if (b.TextColor.R != 0 || b.TextColor.G != 0 || b.TextColor.B != 0)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.CName, TPdfTokens.GetString(TPdfToken.OpenArray) + PdfConv.ToString(b.TextColor) + TPdfTokens.GetString(TPdfToken.CloseArray));
}
if (b.TextStyle != TBookmarkStyle.None)
{
int k = 0;
if ((b.TextStyle & TBookmarkStyle.Italic) != 0)
{
k |= 1;
}
if ((b.TextStyle & TBookmarkStyle.Bold) != 0)
{
k |= 2;
}
TDictionaryRecord.SaveKey(DataStream, TPdfToken.FName, k);
}
TDictionaryRecord.EndDictionary(DataStream);
TIndirectRecord.SaveTrailer(DataStream);
PreviousId = ObjectId;
ObjectId = NextId;
}
}
internal void SelectBrush(TPdfStream DataStream, PathGradientBrush aBrush, RectangleF Rect, RectangleF RotatedCoords, PointF CenterPoint, string DrawingMatrix)
{
ColorBlend cb = null;
try
{
cb = aBrush.InterpolationColors;
}
catch (ArgumentException)//Awful way to tell if it has InterpolationColors, but the framework does not give us a choice.
{
}
if (cb == null || cb.Colors.Length == 1)
{
cb = GetColorBlendWithoutInterpolationColors(aBrush.Blend, aBrush.SurroundColors[0], aBrush.CenterColor);
}
int n = cb.Colors.Length - 1;
if (cb.Colors[0].A != 255 || cb.Colors[n].A != 255)
{
ColorBlend TransparencyBlend = new ColorBlend(2);
TransparencyBlend.Colors[0] = ColorUtil.FromArgb(cb.Colors[0].A, cb.Colors[0].A, cb.Colors[0].A);
TransparencyBlend.Positions[0] = 0;
TransparencyBlend.Colors[1] = ColorUtil.FromArgb(cb.Colors[n].A, cb.Colors[n].A, cb.Colors[n].A);
TransparencyBlend.Positions[1] = 1;
TPdfGradient SMask = Resources.GetGradient(TGradientType.Radial, TransparencyBlend, Rect, aBrush.CenterPoint, RotatedCoords, DrawingMatrix);
SelectTransparency(DataStream, 255, TPdfToken.CommandSetAlphaBrush, SMask.GetSMask(), PdfConv.ToRectangleXY(Rect, true));
}
Resources.SelectGradient(DataStream, TGradientType.Radial, cb, Rect, CenterPoint, RotatedCoords, DrawingMatrix);
}
internal void SelectBrush(TPdfStream DataStream, LinearGradientBrush aBrush, RectangleF Rect, RectangleF RotatedCoords, string DrawingMatrix)
{
#if (WPF)
ColorBlend cb = aBrush.GradientStops;
#else
ColorBlend cb = null;
try
{
if (aBrush.Blend == null)
{
cb = aBrush.InterpolationColors; //if it has interpolationcolors, blend must be null.
}
}
catch (ArgumentException) //Awful way to tell if it has Interpolationcolors, but the framework does not give us a choice.
{
}
if (cb == null)
{
cb = GetColorBlendWithoutInterpolationColors(aBrush.Blend, aBrush.LinearColors[0], aBrush.LinearColors[1]);
}
#endif
int n = cb.Colors.Length - 1;
if (cb.Colors[0].A != 255 || cb.Colors[n].A != 255)
{
ColorBlend TransparencyBlend = new ColorBlend(2);
TransparencyBlend.Colors[0] = ColorUtil.FromArgb(cb.Colors[0].A, cb.Colors[0].A, cb.Colors[0].A);
TransparencyBlend.Positions[0] = 0;
TransparencyBlend.Colors[1] = ColorUtil.FromArgb(cb.Colors[n].A, cb.Colors[n].A, cb.Colors[n].A);
TransparencyBlend.Positions[1] = 1;
TPdfGradient SMask = Resources.GetGradient(TGradientType.Axial, TransparencyBlend, Rect, Rect.Location, RotatedCoords, DrawingMatrix);
SelectTransparency(DataStream, 255, TPdfToken.CommandSetAlphaBrush, SMask.GetSMask(), PdfConv.ToRectangleXY(Rect, true));
}
Resources.SelectGradient(DataStream, TGradientType.Axial, cb, Rect, Rect.Location, RotatedCoords, DrawingMatrix);
}
protected override void SaveExtraKeys(TPdfStream DataStream, TXRefSection XRef, bool Compress)
{
TDictionaryRecord.SaveKey(DataStream, TPdfToken.C0Name, PdfConv.ToString(C0, true));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.C1Name, PdfConv.ToString(C1, true));
TDictionaryRecord.SaveKey(DataStream, TPdfToken.NName, PdfConv.DoubleToString(N));
}
