Method showSparkLines

src/frontend/spreadsheet/SpreadsheetSparkLineHeaderModel.cpp:52–83

show sparkLine of respective column

// show sparkLine of respective column
QPixmap SpreadsheetSparkLinesHeaderModel::showSparkLines(Column* col) {
	// Create a QThreadPool instance and set the maximum number of threads
	QThreadPool threadPool;
	threadPool.setMaxThreadCount(QThread::idealThreadCount());
	PERFTRACE(QLatin1String(Q_FUNC_INFO));
	// Create a QFutureWatcher to monitor the task's progress
	QFutureWatcher<QPixmap> watcher;
	// Create an instance of SparkLineRunnable
	auto* runnable = new SparkLineRunnable(col);

	// Connect the finished signal of the runnable to the watcher's setFuture slot
	connect(runnable, &SparkLineRunnable::taskFinished, [&]() {
		const auto& resultPixmap = runnable->pixmap();
		// Check if the result is valid
		if (!resultPixmap.isNull()) {
			watcher.setFuture(QtConcurrent::run(&threadPool, [=]() {
				return resultPixmap;
			}));
		} else
			watcher.cancel();
	});

	// Start the runnable in the thread pool
	threadPool.start(runnable);

	// Wait for the task to finish
	QEventLoop loop;
	QObject::connect(runnable, &SparkLineRunnable::taskFinished, &loop, &QEventLoop::quit);
	loop.exec();

	return watcher.result();
}

QVariant SpreadsheetSparkLinesHeaderModel::data(const QModelIndex& /*index*/, int /*role*/) const {
	return {};