Method print

src/frontend/matrix/MatrixView.cpp:1041–1167

 */

void MatrixView::print(QPrinter* printer) const {
	WAIT_CURSOR;
	QPainter painter(printer);

	const int dpiy = printer->logicalDpiY();
	const int margin = (int)((1 / GSL_CONST_CGS_INCH) * dpiy); // 1 cm margins

	QHeaderView* hHeader = m_tableView->horizontalHeader();
	QHeaderView* vHeader = m_tableView->verticalHeader();
	auto* data = static_cast<QVector<QVector<double>>*>(m_matrix->data());

	const int rows = m_matrix->rowCount();
	const int cols = m_matrix->columnCount();
	int height = margin;
	const int vertHeaderWidth = vHeader->width();
	int right = margin + vertHeaderWidth;

	int columnsPerTable = 0;
	int headerStringWidth = 0;
	int firstRowStringWidth = vertHeaderWidth;
	bool tablesNeeded = false;
	QVector<int> firstRowCeilSizes;
	firstRowCeilSizes.reserve(data[0].size());
	firstRowCeilSizes.resize(data[0].size());
	QRect br;

	for (int i = 0; i < data->size(); ++i) {
		br = painter.boundingRect(br, Qt::AlignCenter, QString::number(data->at(i)[0]) + QLatin1Char('\t'));
		firstRowCeilSizes[i] = br.width() > m_tableView->columnWidth(i) ? br.width() : m_tableView->columnWidth(i);
	}
	const int width = printer->pageLayout().paintRectPixels(printer->resolution()).width() - 2 * margin;
	for (int col = 0; col < cols; ++col) {
		headerStringWidth += m_tableView->columnWidth(col);
		br = painter.boundingRect(br, Qt::AlignCenter, QString::number(data->at(col)[0]) + QLatin1Char('\t'));
		firstRowStringWidth += br.width();
		if ((headerStringWidth >= width) || (firstRowStringWidth >= width)) {
			tablesNeeded = true;
			break;
		}
		columnsPerTable++;
	}

	int tablesCount = (columnsPerTable != 0) ? cols / columnsPerTable : 0;
	const int remainingColumns = (columnsPerTable != 0) ? cols % columnsPerTable : cols;

	if (!tablesNeeded) {
		tablesCount = 1;
		columnsPerTable = cols;
	}
	if (remainingColumns > 0)
		tablesCount++;
	for (int table = 0; table < tablesCount; ++table) {
		// Paint the horizontal header first
		painter.setFont(hHeader->font());
		QString headerString = m_tableView->model()->headerData(0, Qt::Horizontal).toString();
		QRect br;
		br = painter.boundingRect(br, Qt::AlignCenter, headerString);
		QRect tr(br);