Method OnLButtonDown

DebugView++/LogView.cpp:429–491

}

void CLogView::OnLButtonDown(UINT flags, CPoint point)
{
	if ((flags & MK_SHIFT) == 0 || m_highlightText.empty())
	{
		SetMsgHandled(false);
		return;
	}

	LVHITTESTINFO info;
	info.flags = 0;
	info.pt = point;
	SubItemHitTest(&info);
	if ((info.flags & LVHT_ONITEM) == 0 || info.iSubItem != ColumnToSubItem(Column::Message))
	{
		SetMsgHandled(false);
		return;
	}

	CClientDC dc(*this);
	Win32::GdiObjectSelection font(dc, GetFont());

	int x0 = GetSubItemRect(info.iItem, info.iSubItem, LVIR_BOUNDS).left + GetHeader().GetBitmapMargin();
	auto line = TabsToSpaces(GetItemWText(info.iItem, ColumnToSubItem(Column::Message)));
	auto pos = 0;
	int min = 1000 * 1000;
	bool found = false;
	for (;;)
	{
		pos = line.find(m_highlightText, pos);
		if (pos == line.npos)
			break;

		int x1 = x0 + GetTextSize(dc.m_hDC, line, pos).cx;
		int x2 = x0 + GetTextSize(dc.m_hDC, line, pos + m_highlightText.size()).cx;
		if (std::abs(point.x - x1) < min)
		{
			min = std::abs(point.x - x1);
			m_dragStart = CPoint(x2, point.y);
		}
		if (std::abs(point.x - x2) < min)
		{
			min = std::abs(point.x - x2);
			m_dragStart = CPoint(x1, point.y);
		}

		pos += m_highlightText.size();
		found = true;
	}
	if (!found)
	{
		SetMsgHandled(false);
		return;
	}

	StopTracking();

	SetCapture();
	m_dragging = true;