public void AddLineBreakAfter(Run afterTextRun)
{
if (afterTextRun == null)
{
this.EndWithLineBreak = true;
TextLineBox newline = _textFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
if (_textFlowLayer.LineCount - 1 != newline.LineNumber)
{
newline.EndWithLineBreak = true;
}
}
else if (afterTextRun.NextRun == null)
{
this.EndWithLineBreak = true;
TextLineBox newline = _textFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
if (_textFlowLayer.LineCount - 1 != newline.LineNumber)
{
newline.EndWithLineBreak = true;
}
}
else
{
using (RunListPool.Borrow(out List <Run> tempTextRuns))
{
if (afterTextRun != null)
{
foreach (Run t in GetRunIterForward(afterTextRun.NextRun))
{
tempTextRuns.Add(t);
}
}
bool thisEndWithLineBreak = this.EndWithLineBreak;
this.EndWithLineBreak = true;
this.LocalSuspendLineReArrange();
TextLineBox newTextline = _textFlowLayer.InsertNewLine(_currentLineNumber + 1);
newTextline.EndWithLineBreak = thisEndWithLineBreak;
//
int j = tempTextRuns.Count;
newTextline.LocalSuspendLineReArrange();
int cx = 0;
for (int i = 0; i < j; ++i)
{
Run t = tempTextRuns[i];
this.Remove(t);
newTextline.AddLast(t);
Run.DirectSetLocation(t, cx, 0);
cx += t.Width;
}
newTextline.LocalResumeLineReArrange();
this.LocalResumeLineReArrange();
}
}
}
void AddLineBreakBefore(Run beforeTextRun)
{
if (beforeTextRun == null)
{
this.EndWithLineBreak = true;
_textFlowLayer.InsertNewLine(_currentLineNumber + 1);
}
else
{
//TODO: use pool
using (RunListPool.Borrow(out List <Run> tempTextRuns))
{
if (beforeTextRun != null)
{
foreach (Run t in GetRunIterForward(beforeTextRun))
{
tempTextRuns.Add(t);
}
}
this.EndWithLineBreak = true;
TextLineBox newTextline = _textFlowLayer.InsertNewLine(_currentLineNumber + 1);
//
this.LocalSuspendLineReArrange();
newTextline.LocalSuspendLineReArrange();
int j = tempTextRuns.Count;
for (int i = 0; i < j; ++i)
{
Run t = tempTextRuns[i];
this.Remove(t);
newTextline.AddLast(t);
}
this.LocalResumeLineReArrange();
newTextline.LocalResumeLineReArrange();
}
}
}