char BackSpaceOneChar()
{
if (CurrentTextRun == null)
{
return('\0');
}
else
{
if (CharIndex == 0)
{
return('\0');
}
//move back 1 char and do delete
EditableRun removingTextRun = CurrentTextRun;
int removeIndex = CurrentTextRunCharIndex;
SetCurrentCharStepLeft();
char toBeRemovedChar = CurrentChar;
EditableRun.InnerRemove(removingTextRun, removeIndex, 1, false);
if (removingTextRun.CharacterCount == 0)
{
CurrentLine.Remove(removingTextRun);
EnsureCurrentTextRun();
}
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
return(toBeRemovedChar);
}
}
char Delete()
{
if (CurrentTextRun == null)
{
return('\0');
}
else
{
if (CharIndex < 0)
{
return('\0');
}
char toBeRemovedChar = CurrentChar;
EditableRun removingTextRun = CurrentTextRun;
int removeIndex = CurrentTextRunCharIndex;
CharIndex--;
EditableRun.InnerRemove(removingTextRun, removeIndex, 1, false);
if (removingTextRun.CharacterCount == 0)
{
CurrentLine.Remove(removingTextRun);
EnsureCurrentTextRun();
}
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
return(toBeRemovedChar);
}
}
public void AddTextSpan(EditableRun textRun)
{
if (CurrentLine.IsBlankLine)
{
CurrentLine.AddLast(textRun);
SetCurrentTextRun(textRun);
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
SetCurrentCharIndex(CharIndex + textRun.CharacterCount);
}
else
{
if (CurrentTextRun != null)
{
VisualPointInfo newPointInfo = CurrentLine.Split(GetCurrentPointInfo());
if (newPointInfo.IsOnTheBeginOfLine)
{
CurrentLine.AddBefore((EditableRun)newPointInfo.TextRun, textRun);
}
else
{
CurrentLine.AddAfter((EditableRun)newPointInfo.TextRun, textRun);
}
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
EnsureCurrentTextRun(CharIndex + textRun.CharacterCount);
}
else
{
throw new NotSupportedException();
}
}
}
public void ReplaceCurrentLine(IEnumerable <EditableRun> textRuns)
{
int currentCharIndex = CharIndex;
CurrentLine.ReplaceAll(textRuns);
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
EnsureCurrentTextRun(currentCharIndex);
}
public void RemoveSelectedTextRuns(VisualSelectionRange selectionRange)
{
int precutIndex = selectionRange.StartPoint.LineCharIndex;
CurrentLine.Remove(selectionRange);
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
EnsureCurrentTextRun(precutIndex);
}
public void ClearCurrentLine()
{
int currentCharIndex = CharIndex;
CurrentLine.ReplaceAll(null);
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
EnsureCurrentTextRun(currentCharIndex);
}
public void RemoveSelectedTextRuns(VisualSelectionRange selectionRange)
{
#if DEBUG
//if (!CurrentLine.dbugHasOwner)
//{
//}
#endif
int precutIndex = selectionRange.StartPoint.LineCharIndex;
CurrentLine.Remove(selectionRange);
InvalidateCurrentRun();
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
SetCurrentCharIndex2(precutIndex);
}
public void AddCharacter(char c)
{
if (CurrentLine.IsBlankLine)
{
//TODO: review here, enable this feature or not
//some char can't be a start char on blank line
if (!InternalTextLayerController.CanCaretStopOnThisChar(c))
{
return;
}
//
//1. new
EditableRun t = new EditableTextRun(this.RootGfx,
c,
this.CurrentSpanStyle);
var owner = this.FlowLayer.OwnerRenderElement;
CurrentLine.AddLast(t);
SetCurrentTextRun(t);
}
else
{
EditableRun cRun = CurrentTextRun;
if (cRun != null)
{
if (cRun.IsInsertable)
{
cRun.InsertAfter(CurrentTextRunCharIndex, c);
}
else
{
AddTextSpan(new EditableTextRun(this.RootGfx, c, this.CurrentSpanStyle));
return;
}
}
else
{
throw new NotSupportedException();
}
}
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
SetCurrentCharStepRight();
}
public void AddCharacter(char c)
{
if (CurrentLine.IsBlankLine)
{
//TODO: review here, enable this feature or not
//some char can't be a start char on blank line
if (!TextFlowEditSession.CanCaretStopOnThisChar(c))
{
return;
}
//
//1. new
var run = new TextRun(this.CurrentSpanStyle, new char[] { c });
CurrentLine.AddLast(run);
SetCurrentTextRun(run);
}
else
{
Run run = CurrentTextRun;
if (run != null)
{
if (run.IsInsertable)
{
run.InsertAfter(CurrentTextRunCharIndex, c);
}
else
{
AddTextSpan(new TextRun(CurrentSpanStyle, new char[] { c }));
return;
}
}
else
{
throw new NotSupportedException();
}
}
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
SetCurrentCharStepRight();
}
public void AddCharacter(char c)
{
if (CurrentLine.IsBlankLine)
{
//1. new
EditableRun t = new EditableTextRun(this.Root,
c,
this.CurrentSpanStyle);
var owner = this.FlowLayer.OwnerRenderElement;
CurrentLine.AddLast(t);
SetCurrentTextRun(t);
}
else
{
EditableRun cRun = CurrentTextRun;
if (cRun != null)
{
if (cRun.IsInsertable)
{
cRun.InsertAfter(CurrentTextRunCharIndex, c);
}
else
{
AddTextSpan(new EditableTextRun(this.Root, c, this.CurrentSpanStyle));
return;
}
}
else
{
throw new NotSupportedException();
}
}
CurrentLine.TextLineReCalculateActualLineSize();
CurrentLine.RefreshInlineArrange();
CharIndex++;
}
