private void AppendToLine(PictureToken token)
{
var imageTokenBlock = new ImageTokenBlock
{
ImageID = token.ImageID,
FirstTokenID = _firstTokenID,
LastTokenID = token.ID
};
_output.Enqueue(imageTokenBlock);
_firstTokenID = token.ID + 1;
}
private IEnumerable<TokenBase> ParseNodes(XContainer container, Stack<TextVisualProperties> propertiesStack, TokenIndex top, int bookLevel, string pointer, int parentID = -1)
{
var pointerIndex = 0;
foreach (XNode node in container.Nodes())
{
pointerIndex++;
var text = node as XText;
if (!string.IsNullOrEmpty(text?.Value))
{
foreach (TokenBase token in ParseText(text.Value, top))
{
yield return token;
}
}
var element = node as XElement;
if(element == null)
continue;
TextVisualProperties properties = propertiesStack.Peek().Clone().Update(element, _styleSheet);
string localName = element.Name.LocalName;
int level = bookLevel;
if (localName == "a")
{
ProcessLinks(properties, element);
}
ProcessAnchors(top, element);
if (localName == "section")
{
yield return new NewPageToken(top.Index++);
level++;
}
if (localName == "title")
{
ProcessTitleData(top, element, level);
}
if (localName == "image")
{
XAttribute hrefAttr = element.Attributes().FirstOrDefault(t => (t.Name.LocalName == "href"));
string href = ((hrefAttr != null) ? hrefAttr.Value : string.Empty).TrimStart('#');
var pictureToken = new PictureToken(top.Index++, href);
yield return pictureToken;
}
else
{
var tagOpen = new TagOpenToken(top.Index++, element, properties, parentID, pointer + @"/" + pointerIndex);
yield return tagOpen;
propertiesStack.Push(properties);
foreach (TokenBase token in ParseNodes(element, propertiesStack, top, level, pointer+@"/"+pointerIndex, tagOpen.ID))
{
yield return token;
}
propertiesStack.Pop();
yield return new TagCloseToken(top.Index++, parentID);
}
}
}
