Method ModifyItems

Source/GraphEditorComponentImpl.cpp:37–81

void CGraphBase::ModifyItems(bool redraw) {
	int count = parent_.GetItemCount();

	if (auto pSeq = parent_.GetSequence()) {
		m_iHighlightedItem = -1;
		m_iHighlightedValue = 0;

		int index1 = GetItemIndex(m_ptLineStart);
		int index2 = GetItemIndex(m_ptLineEnd);
		int value1 = GetItemValue(m_ptLineStart);
		int value2 = GetItemValue(m_ptLineEnd);

		if (index1 == index2) {
			if (index1 >= 0 && index1 < count)
				pSeq->SetItem(index1, GetSequenceItemValue(index1, std::clamp(value1, GetMinItemValue(), GetMaxItemValue())));
		}
		else {
			if (index1 > index2) {
				std::swap(index1, index2);
				std::swap(value1, value2);
			}
			if (value1 <= value2) {
				int offs = 0;
				for (int i = index1; i <= index2; ++i) {
					auto delta = static_cast<int>(.5 + static_cast<double>(offs) / (index2 - index1));
					if (i >= 0 && i < count)
						pSeq->SetItem(i, GetSequenceItemValue(i, std::clamp(value1 + delta, GetMinItemValue(), GetMaxItemValue())));
					offs += value2 - value1;
				}
			}
			else {
				int offs = 0;
				for (int i = index2; i >= index1; --i) {
					auto delta = static_cast<int>(.5 + static_cast<double>(offs) / (index2 - index1));
					if (i >= 0 && i < count)
						pSeq->SetItem(i, GetSequenceItemValue(i, std::clamp(value2 + delta, GetMinItemValue(), GetMaxItemValue())));
					offs += value1 - value2;
				}
			}
		}

		if (redraw)
			parent_.ItemModified();		// // //
	}
}

int CGraphBase::GetSequenceItemValue(int idx, int val) const {
	return val;