private bool Append(BookTokenIterator bookTokens, string lastText, int stopTokenID, string stopText, ref bool firstText)
{
TokenBase token = bookTokens.Current;
var pageBreakToken = token as NewPageToken;
if (pageBreakToken != null)
{
AppendToLine(pageBreakToken);
}
var imageToken = token as PictureToken;
if (imageToken != null)
{
AppendToLine(imageToken);
}
var openTagToken = token as TagOpenToken;
if (openTagToken != null)
{
AppendToLine(openTagToken);
}
var closeTagToken = token as TagCloseToken;
if (closeTagToken != null)
{
AppendToLine(closeTagToken);
}
var textSeparatorToken = token as WhitespaceToken;
if (textSeparatorToken != null)
{
AppendSeparator();
}
var textToken = token as TextToken;
if (textToken != null && AppendTextToken(textToken, lastText, stopTokenID, stopText, ref firstText) ||
stopTokenID >= 0 && token.ID >= stopTokenID)
{
return(false);
}
return(true);
}
public BookBuilder(
BookTokenIterator bookTokens,
IEnumerable <BookImage> images,
IList <double> headerSizes,
IFontHelper helper,
Size pageSize,
double textSize,
bool hyphenation,
bool useCssFontSize)
{
_bookTokens = bookTokens;
_images = images;
_headerSizes = headerSizes;
_helper = helper;
_pageSize = pageSize;
_textSize = textSize;
_hyphenation = hyphenation;
_useCssFontSize = useCssFontSize;
}
public IEnumerable <TokenBlockBase> GetLines(BookTokenIterator bookTokens, string lastText, int firstTokenID,
int stopTokenID = -1, string stopText = null)
{
_firstTokenID = firstTokenID;
_tree = bookTokens.BuildTree(_firstTokenID);
_lastOpenTag = _tree.Peek();
_fontSize = GetCurrentFontSize();
_separator = false;
bool firstText = true;
_marginLeft = _marginRight = 0.0;
foreach (TagOpenToken openTagToken in _tree.Reverse())
{
EnterMargin(openTagToken.TextProperties);
}
if (string.IsNullOrEmpty(stopText) && stopTokenID > 0)
{
--stopTokenID;
}
while (bookTokens.MoveNext())
{
foreach (TokenBlockBase baseTokenLine in OutputLines(false))
{
yield return(baseTokenLine);
}
if (!Append(bookTokens, lastText, stopTokenID, stopText, ref firstText))
{
break;
}
}
foreach (TokenBlockBase baseTokenLine in OutputLines(true))
{
yield return(baseTokenLine);
}
}