Method GetCharacterRange

Src/MergeDocDiffCopy.cpp:845–993

}

std::tuple<CEPoint, CEPoint, CEPoint, CEPoint> CMergeDoc::GetCharacterRange(int srcPane, int dstPane, int activePane, int nDiff,
	const CEPoint& ptStart, const CEPoint& ptEnd)
{
	DIFFRANGE cd;
	VERIFY(m_diffList.GetDiff(nDiff, cd));
	const int cd_dbegin = cd.dbegin;
	const int cd_dend = cd.dend;

	std::vector<WordDiff> worddiffs = GetWordDiffArrayInDiffBlock(nDiff, true);

	int firstWordDiff = -1;
	const int nBeginLineFlag = m_ptBuf[activePane]->GetLineFlags(ptEnd.y);
	if ((nBeginLineFlag & LF_GHOST) == 0 && (nBeginLineFlag & LF_DIFF) != 0)
	{
		for (int i = 0; i < static_cast<int>(worddiffs.size()); ++i)
		{
			if ((ptStart.y == worddiffs[i].endline[activePane] && ptStart.x >= worddiffs[i].end[activePane]) ||
				(ptStart.y > worddiffs[i].endline[activePane]))
				firstWordDiff = i;
		}
	}
	int lastWordDiff = -1;
	const int nEndLineFlag = m_ptBuf[activePane]->GetLineFlags(ptEnd.y);
	if ((nEndLineFlag & LF_GHOST) == 0 && (nEndLineFlag & LF_DIFF) != 0)
	{
		for (int i = 0; i < static_cast<int>(worddiffs.size()); ++i)
		{
			if ((ptEnd.y == worddiffs[i].endline[activePane] && ptEnd.x >= worddiffs[i].end[activePane]) ||
				(ptEnd.y > worddiffs[i].endline[activePane]))
				lastWordDiff = i;
		}
	}

	CEPoint ptDstStart, ptDstEnd;
	CEPoint ptSrcStart, ptSrcEnd;

	if (firstWordDiff == -1)
	{
		if (ptStart.y < cd_dbegin)
		{
			ptSrcStart = { 0, cd_dbegin };
			ptDstStart = ptSrcStart;
		}
		else
		{
			ptSrcStart = ptStart;
			ptDstStart = ptStart;
			if (srcPane == activePane)
			{
				if (ptDstStart.x > m_ptBuf[dstPane]->GetLineLength(ptDstStart.y))
					ptDstStart.x = m_ptBuf[dstPane]->GetLineLength(ptDstStart.y);
			}
			else
			{
				if (ptSrcStart.x > m_ptBuf[dstPane]->GetLineLength(ptSrcStart.y))
					ptSrcStart.x = m_ptBuf[dstPane]->GetLineLength(ptSrcStart.y);
			}
		}