/// <summary>
/// Add text to text box.
/// </summary>
/// <param name="Font">Font</param>
/// <param name="FontSize">Font size</param>
/// <param name="DrawStyle">Drawing style</param>
/// <param name="FontColor">Text color</param>
/// <param name="Text">Text</param>
/// <param name="AnnotAction">Web link</param>
public void AddText
(
PdfFont Font,
Double FontSize,
DrawStyle DrawStyle,
Color FontColor,
String Text,
AnnotAction AnnotAction
)
{
// text is null or empty
if (String.IsNullOrEmpty(Text))
{
return;
}
// create new text segment
TextBoxSeg Seg;
// segment array is empty or new segment is different than last one
if (SegArray.Count == 0 || !SegArray[SegArray.Count - 1].IsEqual(Font, FontSize, DrawStyle, FontColor, AnnotAction))
{
Seg = new TextBoxSeg(Font, FontSize, DrawStyle, FontColor, AnnotAction);
SegArray.Add(Seg);
}
// add new text to most recent text segment
else
{
Seg = SegArray[SegArray.Count - 1];
}
// save text start pointer
Int32 TextStart = 0;
// loop for characters
for (Int32 TextPtr = 0; TextPtr < Text.Length; TextPtr++)
{
// shortcut to current character
Char CurChar = Text[TextPtr];
// end of paragraph
if (CurChar == '\n' || CurChar == '\r')
{
// append text to current segemnt
Seg.Text += Text.Substring(TextStart, TextPtr - TextStart);
// test for new line after carriage return
if (CurChar == '\r' && TextPtr + 1 < Text.Length && Text[TextPtr + 1] == '\n')
{
TextPtr++;
}
// move pointer to one after the eol
TextStart = TextPtr + 1;
// add line
AddLine(true);
// update last character
PrevChar = ' ';
// end of text
if (TextPtr + 1 == Text.Length)
{
return;
}
// add new empty segment
Seg = new TextBoxSeg(Font, FontSize, DrawStyle, FontColor, AnnotAction);
SegArray.Add(Seg);
continue;
}
// character width
Double CharWidth = Font.CharWidth(FontSize, Seg.DrawStyle, CurChar);
// space
if (CurChar == ' ')
{
// test for transition from non space to space
// this is a potential line break point
if (PrevChar != ' ')
{
// save potential line break information
LineBreakWidth = LineWidth;
BreakSegIndex = SegArray.Count - 1;
BreakPtr = Seg.Text.Length + TextPtr - TextStart;
BreakWidth = Seg.SegWidth;
}
// add to line width
LineWidth += CharWidth;
Seg.SegWidth += CharWidth;
// update last character
PrevChar = CurChar;
continue;
}
// add current segment width and to overall line width
Seg.SegWidth += CharWidth;
LineWidth += CharWidth;
// for next loop set last character
PrevChar = CurChar;
// box width
Double Width = BoxWidth;
if (FirstLineIndent != 0 && (LineArray.Count == 0 || LineArray[LineArray.Count - 1].EndOfParagraph))
{
Width -= FirstLineIndent;
}
// current line width is less than or equal box width
if (LineWidth <= Width)
{
continue;
}
// append text to current segemnt
Seg.Text += Text.Substring(TextStart, TextPtr - TextStart + 1);
TextStart = TextPtr + 1;
// there are no breaks in this line or last segment is too long
if (LineBreakWidth < LineBreakFactor * Width)
{
BreakSegIndex = SegArray.Count - 1;
BreakPtr = Seg.Text.Length - 1;
BreakWidth = Seg.SegWidth - CharWidth;
}
// break line
BreakLine();
// add line up to break point
AddLine(false);
}
// save text
Seg.Text += Text.Substring(TextStart);
// exit
return;
}
////////////////////////////////////////////////////////////////////
// Convert resource dictionary to one String.
// This method is called at the last step of document creation
// from within PdfDocument.CreateFile(FileName).
// it is relevant to page contents, X objects and tiled pattern
// Return value is resource dictionary string.
////////////////////////////////////////////////////////////////////
internal String BuildResourcesDictionary
(
List <PdfObject> ResObjects, // list of resource objects for this contents
Boolean AddProcSet // for page contents we need /ProcSet
)
{
// resource object list is empty
// if there are no resources an empty dictionary must be returned
if (ResObjects == null || ResObjects.Count == 0)
{
return(AddProcSet ? "<</ProcSet [/PDF/Text]>>" : "<<>>");
}
// resources dictionary content initialization
StringBuilder Resources = new StringBuilder("<<");
// for page object
if (AddProcSet)
{
Resources.Append("/ProcSet [/PDF/Text/ImageB/ImageC/ImageI]\n");
}
// add all resources
Char ResCodeType = ' ';
foreach (PdfObject Resource in ResObjects)
{
// resource code is /Xnnn
if (Resource.ResourceCode[1] != ResCodeType)
{
// terminate last type
if (ResCodeType != ' ')
{
Resources.Append(">>\n");
}
// start new type
ResCodeType = Resource.ResourceCode[1];
Resources.Append(ResCodeStr[ResCodeLetter.IndexOf(ResCodeType)]);
}
// append resource code
if (Resource.GetType() != typeof(PdfFont))
{
Resources.Append(String.Format("{0} {1} 0 R", Resource.ResourceCode, Resource.ObjectNumber));
}
else
{
PdfFont Font = (PdfFont)Resource;
if (Font.FontResCodeUsed)
{
Resources.Append(String.Format("{0} {1} 0 R", Font.ResourceCode, Font.ObjectNumber));
}
if (Font.FontResGlyphUsed)
{
Resources.Append(String.Format("{0} {1} 0 R", Font.ResourceCodeGlyph, Font.GlyphIndexFont.ObjectNumber));
}
}
}
// terminate last type and resource dictionary
Resources.Append(">>\n>>");
// exit
return(Resources.ToString());
}
