/// <summary>Gets a text line for the specified width.</summary>
/// <param name="sText">Text</param>
/// <param name="rWidthMax">Width</param>
/// <param name="iStart">Start position in sText</param>
/// <param name="textSplitMode">Text split mode</param>
/// <returns>Line of text</returns>
internal String sGetTextLine(String sText, Double rWidthMax, ref Int32 iStart, TextSplitMode textSplitMode)
{
if (iStart > sText.Length)
{
throw new ReportException("start position out of range");
}
if (iStart == sText.Length)
{
iStart++;
return("");
}
Int32 iStartCopy = iStart;
StringBuilder sb = new StringBuilder(120);
Double rWidth = 0;
Int32 iPos = iStart;
Int32 iResultLength = 0;
LastChar lastChar = LastChar.Space;
while (true)
{
Char c = sText[iPos];
iPos++;
Double rWidthChar = rGetRawWidth(c);
UnicodeCategory unicodeCategory = Char.GetUnicodeCategory(c);
switch (unicodeCategory)
{
case UnicodeCategory.Control: { // control character
if (c == '\n')
{
goto case UnicodeCategory.LineSeparator;
}
if (lastChar != LastChar.Space)
{
iResultLength = sb.Length;
lastChar = LastChar.Space;
}
iStart = iPos;
break;
}
case UnicodeCategory.LineSeparator:
case UnicodeCategory.ParagraphSeparator: {
iResultLength = sb.Length;
iStart = iPos;
goto EndLoop;
}
case UnicodeCategory.ConnectorPunctuation: // connects two characters
case UnicodeCategory.EnclosingMark: // nonspacing combining character that surrounds all previous characters up to and including a base character
case UnicodeCategory.Format: // not normally rendered but affects the layout of text or the operation of text processes
case UnicodeCategory.ModifierLetter: // free-standing spacing character that indicates modifications of a preceding letter
case UnicodeCategory.ModifierSymbol: // indicates modifications of surrounding characters
case UnicodeCategory.NonSpacingMark: // indicates modifications of a base character
case UnicodeCategory.PrivateUse: // private-use character with unicode value in the range U+E000 through U+F8FF
case UnicodeCategory.SpacingCombiningMark: // indicates modifications of a base character and affects the width of the glyph for that base character
case UnicodeCategory.Surrogate: { // high-surrogate or a low-surrogate with code values in the range U+D800 through U+DFFF
break;
}
case UnicodeCategory.SpaceSeparator: { // space
if (lastChar != LastChar.Space)
{
iResultLength = sb.Length;
lastChar = LastChar.Space;
}
rWidth += rWidthChar;
sb.Append(c);
iStart = iPos;
break;
}
case UnicodeCategory.ClosePunctuation: // separator on this line: )]}
case UnicodeCategory.DashPunctuation: // -
case UnicodeCategory.FinalQuotePunctuation: {
rWidth += rWidthChar;
if (rWidth > rWidthMax)
{
iPos--;
goto EndLoop;
}
sb.Append(c);
lastChar = LastChar.SeparatorAtEndOfLine;
break;
}
case UnicodeCategory.CurrencySymbol: // separator for next line: €
case UnicodeCategory.InitialQuotePunctuation: // opening or initial quotation mark
case UnicodeCategory.OpenPunctuation: { // ([{
if (lastChar == LastChar.SeparatorAtEndOfLine || lastChar == LastChar.Word)
{
iResultLength = sb.Length;
iStart = iPos - 1;
}
rWidth += rWidthChar;
if (rWidth > rWidthMax)
{
iPos--;
goto EndLoop;
}
sb.Append(c);
lastChar = LastChar.SeparatorAtStartOfLine;
break;
}
case UnicodeCategory.OtherPunctuation: { // .,
rWidth += rWidthChar;
if (rWidth > rWidthMax)
{
iPos--;
goto EndLoop;
}
sb.Append(c);
lastChar = LastChar.Word;
break;
}
case UnicodeCategory.DecimalDigitNumber: // character
case UnicodeCategory.LetterNumber:
case UnicodeCategory.LowercaseLetter:
case UnicodeCategory.MathSymbol: // + =
case UnicodeCategory.OtherLetter:
case UnicodeCategory.OtherNotAssigned:
case UnicodeCategory.UppercaseLetter:
case UnicodeCategory.TitlecaseLetter: {
if (lastChar == LastChar.SeparatorAtEndOfLine)
{
iResultLength = sb.Length;
iStart = iPos;
}
rWidth += rWidthChar;
if (rWidth > rWidthMax)
{
iPos--;
goto EndLoop;
}
sb.Append(c);
lastChar = LastChar.Word;
break;
}
default: {
Debug.Fail("unknown unicode category");
break;
}
}
if (iPos >= sText.Length)
{
iResultLength = sb.Length;
iStart = iPos + 1;
goto EndLoop;
}
}
EndLoop:
if (textSplitMode == TextSplitMode.Truncate)
{
iStart = sb.Length;
return(sb.ToString());
}
if (iStart == iStartCopy)
{
if (sb.Length > 0)
{
iStart = iPos;
return(sb.ToString());
}
iStart++;
return(sText[iStart - 1].ToString());
}
return(sb.ToString(0, iResultLength));
}
////////////////////////////////////////////////////////////////////
// Write object to PDF file
////////////////////////////////////////////////////////////////////
internal override void WriteObjectToPdfFile
(
BinaryWriter PdfFile
)
{
// look for first and last character
Int32 FirstChar;
Int32 LastChar;
for (FirstChar = 0; FirstChar < 256 && !ActiveChar[FirstChar]; FirstChar++)
{
;
}
if (FirstChar == 256)
{
return;
}
for (LastChar = 255; !ActiveChar[LastChar]; LastChar--)
{
;
}
// pdf font name
StringBuilder PdfFontName = new StringBuilder("/");
// for embedded font add 6 alpha characters prefix
if (EmbeddedFont)
{
PdfFontName.Append("PFWAAA+");
Int32 Ptr1 = 6;
for (Int32 Ptr2 = ResourceCode.Length - 1; Ptr2 >= 0 && Char.IsDigit(ResourceCode[Ptr2]); Ptr2--)
{
PdfFontName[Ptr1--] = (Char)((Int32)ResourceCode[Ptr2] + ('A' - '0'));
}
}
// PDF readers are not happy with space in font name
PdfFontName.Append(FontFamily.Name.Replace(" ", "#20"));
// font name
if ((DesignFont.Style & FontStyle.Bold) != 0)
{
if ((DesignFont.Style & FontStyle.Italic) != 0)
{
PdfFontName.Append(",BoldItalic");
}
else
{
PdfFontName.Append(",Bold");
}
}
else if ((DesignFont.Style & FontStyle.Italic) != 0)
{
PdfFontName.Append(",Italic");
}
// add items to dictionary
AddToDictionary("/Subtype", "/TrueType");
AddToDictionary("/BaseFont", PdfFontName.ToString());
// add first and last characters
AddToDictionary("/FirstChar", FirstChar.ToString());
AddToDictionary("/LastChar", LastChar.ToString());
// create font descriptor
FontDescriptor = new PdfObject(Document, false, "/FontDescriptor");
// add link to font object
AddToDictionary("/FontDescriptor", FontDescriptor);
// font descriptor dictionary
FontDescriptor.AddToDictionary("/FontName", PdfFontName.ToString()); // must be the same as BaseFont above
FontDescriptor.AddToDictionary("/Flags", ((Int32)FontFlags).ToString());
FontDescriptor.AddToDictionary("/ItalicAngle", String.Format(NFI.DecSep, "{0}", (Single)PdfItalicAngle));
FontDescriptor.AddToDictionary("/FontWeight", PdfFontWeight.ToString());
FontDescriptor.AddToDictionary("/Leading", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(PdfLeading)));
FontDescriptor.AddToDictionary("/Ascent", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(PdfAscent)));
FontDescriptor.AddToDictionary("/Descent", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(-PdfDescent)));
// alphabetic (non symbolic) fonts
if ((FontFlags & PdfFontFlags.Symbolic) == 0)
{
AddToDictionary("/Encoding", "/WinAnsiEncoding");
BoundingBox Box = FontInfo.GetGlyphMetricsApi('x');
FontDescriptor.AddToDictionary("/XHeight", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(Box.Rect.Top)));
FontDescriptor.AddToDictionary("/AvgWidth", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(Box.Width)));
Box = FontInfo.GetGlyphMetricsApi('M');
PdfCapHeight = Box.Rect.Top;
FontDescriptor.AddToDictionary("/CapHeight", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(Box.Rect.Top)));
FontDescriptor.AddToDictionary("/StemV", String.Format(NFI.DecSep, "{0}", (Single)StemV()));
}
// create width object array
FontWidthArray = new PdfObject(Document, false);
// add link to font object
AddToDictionary("/Widths", FontWidthArray);
// build bounding box and width array
Double Left = Double.MaxValue;
Double Bottom = Double.MaxValue;
Double Right = Double.MinValue;
Double Top = Double.MinValue;
Double MaxWidth = Double.MinValue;
FontWidthArray.ContentsString = new StringBuilder("[");
Int32 EolLength = 100;
for (Int32 Index = FirstChar; Index <= LastChar; Index++)
{
Double CharWidth;
// not used
if (!ActiveChar[Index])
{
CharWidth = 0;
}
// used
else
{
// bounding box
BoundingBox GM = GlyphArray[Index];
if (GM.Rect.Left < Left)
{
Left = GM.Rect.Left;
}
if (GM.Rect.Bottom < Bottom)
{
Bottom = GM.Rect.Bottom;
}
if (GM.Rect.Right > Right)
{
Right = GM.Rect.Right;
}
if (GM.Rect.Top > Top)
{
Top = GM.Rect.Top;
}
// character advance width
CharWidth = GM.Width;
// max width
if (CharWidth > MaxWidth)
{
MaxWidth = CharWidth;
}
}
// add width to width array
if (FontWidthArray.ContentsString.Length > EolLength)
{
FontWidthArray.ContentsString.Append('\n');
EolLength = FontWidthArray.ContentsString.Length + 100;
}
// add width to width array
FontWidthArray.ContentsString.AppendFormat(NFI.DecSep, "{0} ", FontUnitsToPdfDic(CharWidth));
}
// add to font descriptor array
FontDescriptor.AddToDictionary("/MaxWidth", String.Format(NFI.DecSep, "{0}", (Single)FontUnitsToPdfDic(MaxWidth)));
FontDescriptor.AddToDictionary("/FontBBox", String.Format(NFI.DecSep, "[{0} {1} {2} {3}]",
FontUnitsToPdfDic(Left), FontUnitsToPdfDic(Bottom), FontUnitsToPdfDic(Right), FontUnitsToPdfDic(Top)));
// terminate width array
FontWidthArray.ContentsString.Length--;
FontWidthArray.ContentsString.Append("]");
// create font file
if (EmbeddedFont)
{
// create font file stream
PdfFontFile EmbeddedFontObj = new PdfFontFile(this);
// add link to font object
FontDescriptor.AddToDictionary("/FontFile2", EmbeddedFontObj);
}
// call base write PdfObject to file method
base.WriteObjectToPdfFile(PdfFile);
// exit
return;
}
