Method updatePreview

src/frontend/spreadsheet/AddSubtractValueDialog.cpp:600–679

}

void AddSubtractValueDialog::updatePreview() {
	if (!ui.framePreview->isVisible() || !m_previewDirty)
		return;

	QApplication::processEvents(QEventLoop::AllEvents, 0);
	WAIT_CURSOR;

	if (!m_project)
		initPreview();

	// y for the result curve - copy the original data into the result column and process it
	m_yColumnResult->setColumnMode(m_columns.constFirst()->columnMode()); // set the mode to its original value, it was potentially changed in generateForColumn
	m_yColumnResult->copy(m_columns.constFirst());
	generateForColumn(m_yColumnResult, 0);

	auto valueType = static_cast<ValueType>(ui.cbType->itemData(ui.cbType->currentIndex()).toInt());
	if (valueType == ValueType::Baseline) {
		// x
		int rows = m_spreadsheet->rowCount();
		if (m_xColumnBaselineDirty) {
			QVector<int> xData;
			xData.resize(rows);
			for (int i = 0; i < rows; ++i)
				xData[i] = i;
			m_xColumnBaseline->setIntegers(xData);
			m_xColumnBaselineDirty = false;
		}

		// y
		const auto* col = m_columns.constFirst();
		QVector<double> baselineData(rows);
		const auto* newData = static_cast<QVector<double>*>(m_yColumnResult->data());
		switch (col->columnMode()) {
		case AbstractColumn::ColumnMode::Integer: {
			auto* data = static_cast<QVector<int>*>(col->data());
			for (int i = 0; i < rows; ++i)
				baselineData[i] = data->at(i) - newData->at(i);
			break;
		}
		case AbstractColumn::ColumnMode::BigInt: {
			auto* data = static_cast<QVector<qint64>*>(col->data());
			for (int i = 0; i < rows; ++i)
				baselineData[i] = data->at(i) - newData->at(i);
			break;
		}
		case AbstractColumn::ColumnMode::Double: {
			auto* data = static_cast<QVector<double>*>(col->data());
			for (int i = 0; i < rows; ++i)
				baselineData[i] = data->at(i) - newData->at(i);
			break;
		}
		case AbstractColumn::ColumnMode::DateTime:
		case AbstractColumn::ColumnMode::Day:
		case AbstractColumn::ColumnMode::Month:
		case AbstractColumn::ColumnMode::Text:
			break;
		}
		m_yColumnBaseline->setValues(baselineData);