Beispiel #1
0
        void LeftCopy(VisualPointInfo pointInfo, TextRangeCopy output)
        {
            if (pointInfo.LineId != _currentLineNumber)
            {
                throw new NotSupportedException();
            }
            Run tobeCutRun = pointInfo.Run;

            if (tobeCutRun == null)
            {
                return;
            }

            foreach (Run run in _runs)
            {
                if (run != tobeCutRun)
                {
                    output.AppendRun(run);
                }
                else
                {
                    break;
                }
            }
            CopyRun leftPart = tobeCutRun.LeftCopy(pointInfo.RunLocalSelectedIndex);

            if (leftPart != null)
            {
                output.AppendRun(leftPart);
            }
        }
Beispiel #2
0
        internal EditableVisualPointInfo Split(EditableVisualPointInfo pointInfo)
        {
            if (pointInfo.LineId != _currentLineNumber)
            {
                throw new NotSupportedException();
            }

            Run tobeCutRun = pointInfo.Run;

            if (tobeCutRun == null)
            {
                return(CreateTextPointInfo(
                           pointInfo.LineId,
                           pointInfo.LineCharIndex,
                           pointInfo.X,
                           null,
                           pointInfo.TextRunCharOffset,
                           pointInfo.TextRunPixelOffset));
            }

            this.LocalSuspendLineReArrange();
            EditableVisualPointInfo result = null;

            CopyRun leftPart  = tobeCutRun.LeftCopy(pointInfo.RunLocalSelectedIndex);
            CopyRun rightPart = tobeCutRun.Copy(pointInfo.RunLocalSelectedIndex);

            if (leftPart != null)
            {
                Run leftRun = AddBefore(tobeCutRun, leftPart);
                if (rightPart != null)
                {
                    this.AddAfter(tobeCutRun, rightPart);
                }

                result = CreateTextPointInfo(
                    pointInfo.LineId,
                    pointInfo.LineCharIndex,
                    pointInfo.X,
                    leftRun,
                    pointInfo.TextRunCharOffset,
                    pointInfo.TextRunPixelOffset);
            }
            else
            {
                if (rightPart != null)
                {
                    this.AddAfter(tobeCutRun, rightPart);
                }


                Run infoTextRun = null;
                if (IsSingleLine)
                {
                    if (tobeCutRun.PrevRun != null)
                    {
                        infoTextRun = tobeCutRun.PrevRun;
                    }
                    else
                    {
                        infoTextRun = tobeCutRun.NextRun;
                    }
                }
                else
                {
                    if (IsFirstLine)
                    {
                        if (tobeCutRun.PrevRun != null)
                        {
                            infoTextRun = tobeCutRun.PrevRun;
                        }
                        else
                        {
                            if (tobeCutRun.NextRun == null)
                            {
                                infoTextRun = null;
                            }
                            else
                            {
                                infoTextRun = tobeCutRun.NextRun;
                            }
                        }
                    }
                    else if (IsLastLine)
                    {
                        if (tobeCutRun.PrevRun != null)
                        {
                            infoTextRun = tobeCutRun.PrevRun;
                        }
                        else
                        {
                        }
                    }
                    else
                    {
                        if (tobeCutRun.NextRun != null)
                        {
                            infoTextRun = tobeCutRun.NextRun;
                        }
                        else
                        {
                            infoTextRun = null;
                        }
                    }
                }
                result = CreateTextPointInfo(
                    pointInfo.LineId,
                    pointInfo.LineCharIndex,
                    pointInfo.X,
                    infoTextRun,
                    pointInfo.TextRunCharOffset,
                    pointInfo.TextRunPixelOffset);
            }

            this.Remove(tobeCutRun);
            this.LocalResumeLineReArrange();
            return(result);
        }
Beispiel #3
0
        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));
            }
        }