Method PerformDrop

Source/PatternEditor.cpp:3674–3737

}

bool CPatternEditor::PerformDrop(CPatternClipData ClipData, bool bCopy, bool bCopyMix)		// // //
{
	// Drop selection onto pattern, returns true if drop was successful

	const int Channels = GetChannelCount();

	m_bDragging = false;
	m_bDragStart = false;

	if (m_bSelecting && m_selection.IsSameStartPoint(m_selDrag)) {
		// Drop area is same as select area
		m_bSelectionInvalidated = true;
		return false;
	}

	if (m_selDrag.GetChanStart() >= Channels || m_selDrag.GetChanEnd() < 0) {		// // //
		// Completely outside of visible area
		CancelSelection();
		return false;
	}

	if (m_selDrag.m_cpStart.Xpos.Track < 0/* || m_selDrag.m_cpStart.Ypos.Row < 0*/) {
		// Clip if selection is less than zero as this is not handled by the paste routine
		int ChannelOffset = (m_selDrag.m_cpStart.Xpos.Track < 0) ? -m_selDrag.m_cpStart.Xpos.Track : 0;
		int RowOffset = (m_selDrag.m_cpStart.Ypos.Row < 0) ? -m_selDrag.m_cpStart.Ypos.Row : 0;

		int NewChannels = ClipData.ClipInfo.Channels - ChannelOffset;
		int NewRows = ClipData.ClipInfo.Rows - RowOffset;

		auto Clipped = CPatternClipData {NewChannels, NewRows};		// // //

		Clipped.ClipInfo = ClipData.ClipInfo;
		Clipped.ClipInfo.Channels = NewChannels;
		Clipped.ClipInfo.Rows = NewRows;

		for (int c = 0; c < NewChannels; ++c)
			for (int r = 0; r < NewRows; ++r)
				*Clipped.GetPattern(c, r) = *ClipData.GetPattern(c + ChannelOffset, r + RowOffset);

		if (m_selDrag.m_cpStart.Xpos.Track < 0)
			m_selDrag.m_cpStart.Xpos = {0, cursor_column_t::NOTE};

		m_selDrag.m_cpStart.Ypos.Row = std::max(m_selDrag.m_cpStart.Ypos.Row, 0);

		ClipData = std::move(Clipped);		// // //
	}

	if (m_selDrag.m_cpEnd.Xpos.Track > Channels - 1)
		m_selDrag.m_cpEnd.Xpos = {Channels - 1, GetChannelColumns(Channels)};

	// // //
	m_selDrag.m_cpEnd.Xpos.Column = std::min(m_selDrag.m_cpEnd.Xpos.Column, cursor_column_t::EFF4_PARAM2);	// TODO remove hardcoded number

	// Paste

	bool bDelete = !bCopy;
	bool bMix = IsShiftPressed();