Method createTextLabelText

src/backend/worksheet/InfoElement.cpp:461–508

! * create Text which will be shown in the TextLabel * Called when: * - The position of the infoelement was changed * - a curve was removed * - a curve was added * @return Text */

 * @return Text
 */
TextLabel::TextWrapper InfoElement::createTextLabelText() {
	// TODO: save positions of the variables in extra variables to replace faster, because replace takes long time
	auto wrapper = m_title->text();
	if (markerPointsCount() < 1) {
		DEBUG(STDSTRING(wrapper.text))
		DEBUG(STDSTRING(wrapper.textPlaceholder))
		wrapper.text = wrapper.textPlaceholder;
		return wrapper;
	}

	if (!(markerpoints.at(0).curve && markerpoints.at(0).curve->xColumn()))
		return wrapper; // no data is set in the curve yet, nothing to do

	Q_D(const InfoElement);

	// replace the placeholder for the x-value
	QString xValueStr;
	const auto columnMode = markerpoints.at(0).curve->xColumn()->columnMode();
	if (columnMode == AbstractColumn::ColumnMode::Double || columnMode == AbstractColumn::ColumnMode::Integer
		|| columnMode == AbstractColumn::ColumnMode::BigInt)
		xValueStr = QString::number(d->positionLogical);
	else if (columnMode == AbstractColumn::ColumnMode::Day || columnMode == AbstractColumn::ColumnMode::Month
			 || columnMode == AbstractColumn::ColumnMode::DateTime) {
		const auto& dateTime = QDateTime::fromMSecsSinceEpoch(d->positionLogical, QTimeZone::UTC);
		xValueStr = dateTime.toString(d->m_plot->rangeDateTimeFormat(Dimension::X));
	}

	QString text = wrapper.textPlaceholder;
	if (wrapper.mode == TextLabel::Mode::Text)
		text.replace(QStringLiteral("&amp;(x)"), xValueStr);
	else
		text.replace(QStringLiteral("&(x)"), xValueStr);

	// replace the placeholders for curve's y-values
	for (const auto& markerpoint : std::as_const(markerpoints)) {
		QString replace;
		if (wrapper.mode == TextLabel::Mode::Text)
			replace = QStringLiteral("&amp;(");
		else
			replace = QStringLiteral("&(");

		replace += markerpoint.curve->name() + QLatin1Char(')');
		text.replace(replace, QString::number(markerpoint.customPoint->positionLogical().y()));
	}

	wrapper.text = text;
	return wrapper;
}

TextLabel* InfoElement::title() {
	return m_title;