|
public abstract Copy ( int startIndex ) : |
||
| startIndex | int | |
| return | ||
void RightCopy(VisualPointInfo pointInfo, List <EditableRun> output)
{
if (pointInfo.LineId != currentLineNumber)
{
throw new NotSupportedException();
}
EditableRun tobeCutRun = pointInfo.TextRun;
if (tobeCutRun == null)
{
return;
}
EditableRun postCutTextRun = (EditableRun)tobeCutRun.Copy(pointInfo.RunLocalSelectedIndex + 1);
if (postCutTextRun != null)
{
output.Add(postCutTextRun);
}
foreach (EditableRun t in GetVisualElementForward(tobeCutRun.NextTextRun, this.LastRun))
{
output.Add(t.Clone());
}
}
internal EditableVisualPointInfo Split(EditableVisualPointInfo pointInfo)
{
if (pointInfo.LineId != currentLineNumber)
{
throw new NotSupportedException();
}
EditableRun tobeCutRun = (EditableRun)pointInfo.TextRun;
if (tobeCutRun == null)
{
return(CreateTextPointInfo(
pointInfo.LineId,
pointInfo.LineCharIndex,
pointInfo.X,
null,
pointInfo.TextRunCharOffset,
pointInfo.TextRunPixelOffset));
}
this.LocalSuspendLineReArrange();
EditableVisualPointInfo result = null;
EditableRun preCutTextRun = (EditableRun)tobeCutRun.LeftCopy(pointInfo.RunLocalSelectedIndex);
EditableRun postCutTextRun = (EditableRun)tobeCutRun.Copy(pointInfo.RunLocalSelectedIndex);
if (preCutTextRun != null)
{
this.AddBefore(tobeCutRun, preCutTextRun);
if (postCutTextRun != null)
{
this.AddAfter(tobeCutRun, postCutTextRun);
}
result = CreateTextPointInfo(
pointInfo.LineId,
pointInfo.LineCharIndex,
pointInfo.X,
preCutTextRun,
pointInfo.TextRunCharOffset,
pointInfo.TextRunPixelOffset);
}
else
{
if (postCutTextRun != null)
{
this.AddAfter(tobeCutRun, postCutTextRun);
}
EditableRun infoTextRun = null;
if (IsSingleLine)
{
if (tobeCutRun.PrevTextRun != null)
{
infoTextRun = tobeCutRun.PrevTextRun;
}
else
{
infoTextRun = tobeCutRun.NextTextRun;
}
}
else
{
if (IsFirstLine)
{
if (tobeCutRun.PrevTextRun != null)
{
infoTextRun = tobeCutRun.PrevTextRun;
}
else
{
if (tobeCutRun.NextTextRun.IsLineBreak)
{
infoTextRun = null;
}
else
{
infoTextRun = tobeCutRun.NextTextRun;
}
}
}
else if (IsLastLine)
{
if (tobeCutRun.PrevTextRun != null)
{
if (tobeCutRun.PrevTextRun.IsLineBreak)
{
if (tobeCutRun.NextTextRun != null)
{
infoTextRun = tobeCutRun.NextTextRun;
}
else
{
infoTextRun = null;
}
}
else
{
infoTextRun = tobeCutRun.PrevTextRun;
}
}
else
{
}
}
else
{
if (!tobeCutRun.NextTextRun.IsLineBreak)
{
infoTextRun = tobeCutRun.NextTextRun;
}
else
{
infoTextRun = null;
}
}
}
result = CreateTextPointInfo(
pointInfo.LineId,
pointInfo.LineCharIndex,
pointInfo.X,
infoTextRun,
pointInfo.TextRunCharOffset,
pointInfo.TextRunPixelOffset);
}
this.Remove(tobeCutRun);
this.LocalResumeLineReArrange();
return(result);
}
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 + 1, endPoint.LineCharIndex - startPoint.LineCharIndex);
EditableRun postCutTextRun = (EditableRun)toBeCutTextRun.Copy(endPoint.RunLocalSelectedIndex + 1);
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 });
}
}
