public VisualPointInfo GetTextPointInfoFromCaretPoint(int caretX)
{
int accTextRunWidth = 0;
int accTextRunCharCount = 0;
Run lastestTextRun = null;
foreach (Run t in _runs)
{
lastestTextRun = t;
int thisTextRunWidth = t.Width;
if (accTextRunWidth + thisTextRunWidth > caretX)
{
CharLocation localPointInfo = t.GetCharacterFromPixelOffset(caretX - thisTextRunWidth);
var pointInfo = new EditableVisualPointInfo(this, accTextRunCharCount + localPointInfo.RunCharIndex, t);
pointInfo.SetAdditionVisualInfo(accTextRunCharCount, caretX, accTextRunWidth);
return(pointInfo);
}
else
{
accTextRunWidth += thisTextRunWidth;
accTextRunCharCount += t.CharacterCount;
}
}
if (lastestTextRun != null)
{
return(null);
}
else
{
EditableVisualPointInfo pInfo = new EditableVisualPointInfo(this, -1, null);
pInfo.SetAdditionVisualInfo(accTextRunCharCount, caretX, accTextRunWidth);
return(pInfo);
}
}
EditableVisualPointInfo CreateTextPointInfo(int lineId, int lineCharIndex, int caretPixelX,
EditableRun onTextRun, int textRunCharOffset, int textRunPixelOffset)
{
EditableVisualPointInfo textPointInfo = new EditableVisualPointInfo(this, lineCharIndex);
textPointInfo.SetAdditionVisualInfo(onTextRun, textRunCharOffset, caretPixelX, textRunPixelOffset);
return(textPointInfo);
}
public EditableVisualPointInfo GetTextPointInfoFromCharIndex(int charIndex)
{
int limit = CharCount - 1;
if (charIndex > limit)
{
charIndex = limit;
}
EditableVisualPointInfo textPointInfo = new EditableVisualPointInfo(this, charIndex);
int rCharOffset = 0;
int rPixelOffset = 0;
EditableRun lastestRun = null;
foreach (EditableRun r in _runs)
{
lastestRun = r;
int thisCharCount = lastestRun.CharacterCount;
if (thisCharCount + rCharOffset > charIndex)
{
int localCharOffset = charIndex - rCharOffset;
int pixelOffset = lastestRun.GetRunWidth(localCharOffset);
textPointInfo.SetAdditionVisualInfo(lastestRun,
localCharOffset, rPixelOffset + pixelOffset
, rPixelOffset);
return(textPointInfo);
}
else
{
rCharOffset += thisCharCount;
rPixelOffset += r.Width;
}
}
textPointInfo.SetAdditionVisualInfo(lastestRun, rCharOffset - lastestRun.CharacterCount, rPixelOffset, rPixelOffset - lastestRun.Width);
return(textPointInfo);
}
public EditableVisualPointInfo GetCurrentPointInfo()
{
#if DEBUG
if (_currentTextRun != null && !_currentTextRun.HasParent)
{
throw new NotSupportedException();
}
if (_currentTextRun == null)
{
}
#endif
EditableVisualPointInfo textPointInfo =
new EditableVisualPointInfo(_currentLine, caret_char_index, _currentTextRun);
textPointInfo.SetAdditionVisualInfo(
_rCharOffset, _caretXPos, _rPixelOffset);
return(textPointInfo);
}