public void CopySelectedTextToPlainText(StringBuilder stBuilder)
{
if (_selectionRange != null)
{
_selectionRange.SwapIfUnOrder();
if (_selectionRange.IsOnTheSameLine)
{
var copyRuns = new TextRangeCopy();
_lineEditor.CopySelectedTextRuns(_selectionRange, copyRuns);
copyRuns.CopyContentToStringBuilder(stBuilder);
}
else
{
VisualPointInfo startPoint = _selectionRange.StartPoint;
CurrentLineNumber = startPoint.LineId;
_lineEditor.SetCurrentCharIndex(startPoint.LineCharIndex);
var copyRuns = new TextRangeCopy();
_lineEditor.CopySelectedTextRuns(_selectionRange, copyRuns);
copyRuns.CopyContentToStringBuilder(stBuilder);
}
}
}
public void DoTab()
{
if (!_isEditable)
{
return;
}
//
if (_editSession.SelectionRange != null)
{
VisualSelectionRange visualSelectionRange = _editSession.SelectionRange;
visualSelectionRange.SwapIfUnOrder();
if (visualSelectionRange.IsValid && !visualSelectionRange.IsOnTheSameLine)
{
InvalidateGraphicOfCurrentSelectionArea();
//
_editSession.DoTabOverSelectedRange();
return; //finish here
}
}
//------------
//do tab as usuall
int insertAt = _editSession.CurrentLineCharIndex;
for (int i = NumOfWhitespaceForSingleTab; i >= 0; --i)
{
_editSession.AddCharToCurrentLine(' ');
}
if (_textSurfaceEventListener != null)
{
TextSurfaceEventListener.NotifyStringAdded(_textSurfaceEventListener,
insertAt, new string(' ', NumOfWhitespaceForSingleTab));
}
InvalidateGraphicOfCurrentLineArea();
}
internal SelectionRangeInfo Split(VisualSelectionRange selectionRange)
{
selectionRange.SwapIfUnOrder();
EditableVisualPointInfo startPoint = selectionRange.StartPoint;
EditableVisualPointInfo endPoint = selectionRange.EndPoint;
if (startPoint.Run == endPoint.Run)
{
Run toBeCutTextRun = startPoint.Run;
CopyRun leftPart = toBeCutTextRun.LeftCopy(startPoint.RunLocalSelectedIndex);
CopyRun middlePart = toBeCutTextRun.Copy(startPoint.RunLocalSelectedIndex, endPoint.LineCharIndex - startPoint.LineCharIndex);
CopyRun rightPart = toBeCutTextRun.Copy(endPoint.RunLocalSelectedIndex);
EditableVisualPointInfo newStartRangePointInfo = null;
EditableVisualPointInfo newEndRangePointInfo = null;
TextLineBox line = this;
if (startPoint.LineId != _currentLineNumber)
{
line = _textFlowLayer.GetTextLine(startPoint.LineId);
}
line.LocalSuspendLineReArrange();
if (leftPart != null)
{
Run leftRun = line.AddBefore(toBeCutTextRun, leftPart);
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId, startPoint.LineCharIndex, startPoint.X,
leftRun,
startPoint.TextRunCharOffset, startPoint.TextRunPixelOffset);
}
else
{
//no left part,
//so we connect to prev text run
Run prevTxtRun = startPoint.Run.PrevRun;
if (prevTxtRun != null)
{
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId, startPoint.LineCharIndex, startPoint.X,
prevTxtRun,
startPoint.TextRunCharOffset - leftPart.CharacterCount,
startPoint.TextRunPixelOffset - prevTxtRun.Width);
}
else
{
//no prev run, we are at the begining of the line
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId,
startPoint.LineCharIndex,
0,
null,
0, 0);
}
}
if (rightPart != null)
{
Run rightRun = line.AddAfter(toBeCutTextRun, rightPart);
newEndRangePointInfo =
CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
null, ///??
startPoint.TextRunCharOffset + middlePart.CharacterCount,
startPoint.TextRunPixelOffset + MeasureCopyRunLength(middlePart).Width);
}
else
{
Run nextTxtRun = endPoint.Run.NextRun;
if (nextTxtRun != null)
{
newEndRangePointInfo = CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
null, ///??
endPoint.TextRunPixelOffset + endPoint.Run.CharacterCount,
endPoint.TextRunPixelOffset + endPoint.Run.Width);
}
else
{
newEndRangePointInfo = CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
null,
endPoint.TextRunCharOffset,
endPoint.TextRunPixelOffset);
}
}
if (middlePart != null)
{
line.AddAfter(toBeCutTextRun, middlePart);
}
else
{
throw new NotSupportedException();
}
line.Remove(toBeCutTextRun);
line.LocalResumeLineReArrange();
return(new SelectionRangeInfo(newStartRangePointInfo, newEndRangePointInfo));
}
else
{
TextLineBox workingLine = this;
if (startPoint.LineId != _currentLineNumber)
{
workingLine = _textFlowLayer.GetTextLine(startPoint.LineId);
}
EditableVisualPointInfo newStartPoint = workingLine.Split(startPoint);
workingLine = this;
if (endPoint.LineId != _currentLineNumber)
{
workingLine = _textFlowLayer.GetTextLine(endPoint.LineId);
}
EditableVisualPointInfo newEndPoint = workingLine.Split(endPoint);
return(new SelectionRangeInfo(newStartPoint, newEndPoint));
}
}
internal EditableVisualPointInfo[] Split(VisualSelectionRange selectionRange)
{
selectionRange.SwapIfUnOrder();
EditableVisualPointInfo startPoint = selectionRange.StartPoint;
EditableVisualPointInfo endPoint = selectionRange.EndPoint;
if (startPoint.TextRun == endPoint.TextRun)
{
EditableRun toBeCutTextRun = startPoint.TextRun;
EditableRun preCutTextRun = (EditableRun)toBeCutTextRun.LeftCopy(startPoint.RunLocalSelectedIndex);
EditableRun middleCutTextRun = (EditableRun)toBeCutTextRun.Copy(startPoint.RunLocalSelectedIndex, endPoint.LineCharIndex - startPoint.LineCharIndex);
EditableRun postCutTextRun = (EditableRun)toBeCutTextRun.Copy(endPoint.RunLocalSelectedIndex);
EditableVisualPointInfo newStartRangePointInfo = null;
EditableVisualPointInfo newEndRangePointInfo = null;
EditableTextLine line = this;
if (startPoint.LineId != _currentLineNumber)
{
line = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
line.LocalSuspendLineReArrange();
if (preCutTextRun != null)
{
line.AddBefore(toBeCutTextRun, preCutTextRun);
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId, startPoint.LineCharIndex, startPoint.X,
preCutTextRun, startPoint.TextRunCharOffset, startPoint.TextRunPixelOffset);
}
else
{
EditableRun prevTxtRun = GetPrevTextRun((EditableRun)startPoint.TextRun);
if (prevTxtRun != null)
{
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId, startPoint.LineCharIndex, startPoint.X, prevTxtRun, startPoint.TextRunCharOffset - preCutTextRun.CharacterCount,
startPoint.TextRunPixelOffset - prevTxtRun.Width);
}
else
{
newStartRangePointInfo = CreateTextPointInfo(
startPoint.LineId,
startPoint.LineCharIndex,
0,
null,
0, 0);
}
}
if (postCutTextRun != null)
{
line.AddAfter(toBeCutTextRun, postCutTextRun);
newEndRangePointInfo =
CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
middleCutTextRun,
startPoint.TextRunCharOffset + middleCutTextRun.CharacterCount,
startPoint.TextRunPixelOffset + middleCutTextRun.Width);
}
else
{
EditableRun nextTxtRun = GetNextTextRun((EditableRun)endPoint.TextRun);
if (nextTxtRun != null)
{
newEndRangePointInfo = CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
nextTxtRun,
endPoint.TextRunPixelOffset + endPoint.TextRun.CharacterCount,
endPoint.TextRunPixelOffset + endPoint.TextRun.Width);
}
else
{
newEndRangePointInfo = CreateTextPointInfo(
endPoint.LineId,
endPoint.LineCharIndex,
endPoint.X,
middleCutTextRun,
endPoint.TextRunCharOffset,
endPoint.TextRunPixelOffset);
}
}
if (middleCutTextRun != null)
{
line.AddAfter(toBeCutTextRun, middleCutTextRun);
}
else
{
throw new NotSupportedException();
}
line.Remove(toBeCutTextRun);
line.LocalResumeLineReArrange();
return(new EditableVisualPointInfo[] { newStartRangePointInfo, newEndRangePointInfo });
}
else
{
EditableTextLine workingLine = this;
if (startPoint.LineId != _currentLineNumber)
{
workingLine = EditableFlowLayer.GetTextLine(startPoint.LineId);
}
EditableVisualPointInfo newStartPoint = workingLine.Split(startPoint);
workingLine = this;
if (endPoint.LineId != _currentLineNumber)
{
workingLine = EditableFlowLayer.GetTextLine(endPoint.LineId);
}
EditableVisualPointInfo newEndPoint = workingLine.Split(endPoint);
return(new EditableVisualPointInfo[] { newStartPoint, newEndPoint });
}
}