##// END OF EJS Templates
Creates a delegate offering methods for rendering a graph
Creates a delegate offering methods for rendering a graph

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VisualizationGraphHelper.cpp
161 lines | 5.6 KiB | text/x-c | CppLexer
/ gui / src / Visualization / VisualizationGraphHelper.cpp
#include "Visualization/VisualizationGraphHelper.h"
#include "Visualization/qcustomplot.h"
#include <Data/ScalarSeries.h>
#include <Variable/Variable.h>
Q_LOGGING_CATEGORY(LOG_VisualizationGraphHelper, "VisualizationGraphHelper")
namespace {
class SqpDataContainer : public QCPGraphDataContainer {
public:
void appendGraphData(const QCPGraphData &data) { mData.append(data); }
};
/// Format for datetimes on a axis
const auto DATETIME_TICKER_FORMAT = QStringLiteral("yyyy/MM/dd \nhh:mm:ss");
/// Generates the appropriate ticker for an axis, depending on whether the axis displays time or
/// non-time data
QSharedPointer<QCPAxisTicker> axisTicker(bool isTimeAxis)
{
if (isTimeAxis) {
auto dateTicker = QSharedPointer<QCPAxisTickerDateTime>::create();
dateTicker->setDateTimeFormat(DATETIME_TICKER_FORMAT);
return dateTicker;
}
else {
// default ticker
return QSharedPointer<QCPAxisTicker>::create();
}
}
void updateScalarData(QCPAbstractPlottable *component, ScalarSeries &scalarSeries,
const SqpDateTime &dateTime)
{
qCDebug(LOG_VisualizationGraphHelper()) << "TORM: updateScalarData"
<< QThread::currentThread()->objectName();
if (auto qcpGraph = dynamic_cast<QCPGraph *>(component)) {
scalarSeries.lockRead();
{
const auto &xData = scalarSeries.xAxisData()->cdata();
const auto &valuesData = scalarSeries.valuesData()->cdata();
auto xDataBegin = xData.cbegin();
auto xDataEnd = xData.cend();
qCInfo(LOG_VisualizationGraphHelper()) << "TORM: Current points in cache"
<< xData.count();
auto sqpDataContainer = QSharedPointer<SqpDataContainer>::create();
qcpGraph->setData(sqpDataContainer);
auto lowerIt = std::lower_bound(xDataBegin, xDataEnd, dateTime.m_TStart);
auto upperIt = std::upper_bound(xDataBegin, xDataEnd, dateTime.m_TEnd);
auto distance = std::distance(xDataBegin, lowerIt);
auto valuesDataIt = valuesData.cbegin() + distance;
for (auto xAxisDataIt = lowerIt; xAxisDataIt != upperIt;
++xAxisDataIt, ++valuesDataIt) {
sqpDataContainer->appendGraphData(QCPGraphData(*xAxisDataIt, *valuesDataIt));
}
qCInfo(LOG_VisualizationGraphHelper()) << "TORM: Current points displayed"
<< sqpDataContainer->size();
}
scalarSeries.unlock();
// Display all data
component->parentPlot()->replot();
}
else {
/// @todo DEBUG
}
}
QCPAbstractPlottable *createScalarSeriesComponent(ScalarSeries &scalarSeries, QCustomPlot &plot,
const SqpDateTime &dateTime)
{
auto component = plot.addGraph();
if (component) {
// // Graph data
component->setData(scalarSeries.xAxisData()->data(), scalarSeries.valuesData()->data(),
true);
updateScalarData(component, scalarSeries, dateTime);
// Axes properties
/// @todo : for the moment, no control is performed on the axes: the units and the tickers
/// are fixed for the default x-axis and y-axis of the plot, and according to the new graph
auto setAxisProperties = [](auto axis, const auto &unit) {
// label (unit name)
axis->setLabel(unit.m_Name);
// ticker (depending on the type of unit)
axis->setTicker(axisTicker(unit.m_TimeUnit));
};
setAxisProperties(plot.xAxis, scalarSeries.xAxisUnit());
setAxisProperties(plot.yAxis, scalarSeries.valuesUnit());
// Display all data
component->rescaleAxes();
plot.replot();
}
else {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't create graph for the scalar series");
}
return component;
}
} // namespace
QVector<QCPAbstractPlottable *> VisualizationGraphHelper::create(std::shared_ptr<Variable> variable,
QCustomPlot &plot) noexcept
{
auto result = QVector<QCPAbstractPlottable *>{};
if (variable) {
// Gets the data series of the variable to call the creation of the right components
// according to its type
if (auto scalarSeries = dynamic_cast<ScalarSeries *>(variable->dataSeries())) {
result.append(createScalarSeriesComponent(*scalarSeries, plot, variable->dateTime()));
}
else {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't create graph plottables : unmanaged data series type");
}
}
else {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't create graph plottables : the variable is null");
}
return result;
}
void VisualizationGraphHelper::updateData(QVector<QCPAbstractPlottable *> plotableVect,
IDataSeries *dataSeries, const SqpDateTime &dateTime)
{
if (auto scalarSeries = dynamic_cast<ScalarSeries *>(dataSeries)) {
if (plotableVect.size() == 1) {
updateScalarData(plotableVect.at(0), *scalarSeries, dateTime);
}
else {
qCCritical(LOG_VisualizationGraphHelper()) << QObject::tr(
"Can't update Data of a scalarSeries because there is not only one component "
"associated");
}
}
else {
/// @todo DEBUG
}
}