##// END OF EJS Templates
Uses new iterator in DataSeries.cpp...
Uses new iterator in DataSeries.cpp The code of the old iterator is deleted. The new iterator is now built from the Implementation of DataSeriesIteratorValue :: Impl for a DataSeries

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VisualizationGraphHelper.cpp
243 lines | 8.1 KiB | text/x-c | CppLexer
/ gui / src / Visualization / VisualizationGraphHelper.cpp
#include "Visualization/VisualizationGraphHelper.h"
#include "Visualization/qcustomplot.h"
#include <Common/ColorUtils.h>
#include <Data/ScalarSeries.h>
#include <Data/VectorSeries.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);
dateTicker->setDateTimeSpec(Qt::UTC);
return dateTicker;
}
else {
// default ticker
return QSharedPointer<QCPAxisTicker>::create();
}
}
/// Sets axes properties according to the properties of a data series
template <int Dim>
void setAxesProperties(const DataSeries<Dim> &dataSeries, QCustomPlot &plot) noexcept
{
/// @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, dataSeries.xAxisUnit());
setAxisProperties(plot.yAxis, dataSeries.valuesUnit());
}
/**
* Struct used to create plottables, depending on the type of the data series from which to create
* them
* @tparam T the data series' type
* @remarks Default implementation can't create plottables
*/
template <typename T, typename Enabled = void>
struct PlottablesCreator {
static PlottablesMap createPlottables(T &, QCustomPlot &)
{
qCCritical(LOG_DataSeries())
<< QObject::tr("Can't create plottables: unmanaged data series type");
return {};
}
};
/**
* Specialization of PlottablesCreator for scalars and vectors
* @sa ScalarSeries
* @sa VectorSeries
*/
template <typename T>
struct PlottablesCreator<T,
typename std::enable_if_t<std::is_base_of<ScalarSeries, T>::value
or std::is_base_of<VectorSeries, T>::value> > {
static PlottablesMap createPlottables(T &dataSeries, QCustomPlot &plot)
{
PlottablesMap result{};
// Gets the number of components of the data series
auto componentCount = dataSeries.valuesData()->componentCount();
auto colors = ColorUtils::colors(Qt::blue, Qt::red, componentCount);
// For each component of the data series, creates a QCPGraph to add to the plot
for (auto i = 0; i < componentCount; ++i) {
auto graph = plot.addGraph();
graph->setPen(QPen{colors.at(i)});
result.insert({i, graph});
}
// Axes properties
setAxesProperties(dataSeries, plot);
plot.replot();
return result;
}
};
/**
* Struct used to update plottables, depending on the type of the data series from which to update
* them
* @tparam T the data series' type
* @remarks Default implementation can't update plottables
*/
template <typename T, typename Enabled = void>
struct PlottablesUpdater {
static void updatePlottables(T &, PlottablesMap &, const SqpRange &, bool)
{
qCCritical(LOG_DataSeries())
<< QObject::tr("Can't update plottables: unmanaged data series type");
}
};
/**
* Specialization of PlottablesUpdater for scalars and vectors
* @sa ScalarSeries
* @sa VectorSeries
*/
template <typename T>
struct PlottablesUpdater<T,
typename std::enable_if_t<std::is_base_of<ScalarSeries, T>::value
or std::is_base_of<VectorSeries, T>::value> > {
static void updatePlottables(T &dataSeries, PlottablesMap &plottables, const SqpRange &range,
bool rescaleAxes)
{
dataSeries.lockRead();
// For each plottable to update, resets its data
std::map<int, QSharedPointer<SqpDataContainer> > dataContainers{};
for (const auto &plottable : plottables) {
if (auto graph = dynamic_cast<QCPGraph *>(plottable.second)) {
auto dataContainer = QSharedPointer<SqpDataContainer>::create();
graph->setData(dataContainer);
dataContainers.insert({plottable.first, dataContainer});
}
}
// - Gets the data of the series included in the current range
// - Updates each plottable by adding, for each data item, a point that takes x-axis data
// and value data. The correct value is retrieved according to the index of the component
auto subDataIts = dataSeries.subData(range.m_TStart, range.m_TEnd);
for (auto it = subDataIts.first; it != subDataIts.second; ++it) {
for (const auto &dataContainer : dataContainers) {
auto componentIndex = dataContainer.first;
dataContainer.second->appendGraphData(
QCPGraphData(it->x(), it->value(componentIndex)));
}
}
dataSeries.unlock();
if (!plottables.empty()) {
auto plot = plottables.begin()->second->parentPlot();
if (rescaleAxes) {
plot->rescaleAxes();
}
plot->replot();
}
}
};
/**
* Helper used to create/update plottables
*/
struct IPlottablesHelper {
virtual ~IPlottablesHelper() noexcept = default;
virtual PlottablesMap create(QCustomPlot &plot) const = 0;
virtual void update(PlottablesMap &plottables, const SqpRange &range,
bool rescaleAxes = false) const = 0;
};
/**
* Default implementation of IPlottablesHelper, which takes data series to create/update plottables
* @tparam T the data series' type
*/
template <typename T>
struct PlottablesHelper : public IPlottablesHelper {
explicit PlottablesHelper(T &dataSeries) : m_DataSeries{dataSeries} {}
PlottablesMap create(QCustomPlot &plot) const override
{
return PlottablesCreator<T>::createPlottables(m_DataSeries, plot);
}
void update(PlottablesMap &plottables, const SqpRange &range, bool rescaleAxes) const override
{
PlottablesUpdater<T>::updatePlottables(m_DataSeries, plottables, range, rescaleAxes);
}
T &m_DataSeries;
};
/// Creates IPlottablesHelper according to a data series
std::unique_ptr<IPlottablesHelper> createHelper(std::shared_ptr<IDataSeries> dataSeries) noexcept
{
if (auto scalarSeries = std::dynamic_pointer_cast<ScalarSeries>(dataSeries)) {
return std::make_unique<PlottablesHelper<ScalarSeries> >(*scalarSeries);
}
else if (auto vectorSeries = std::dynamic_pointer_cast<VectorSeries>(dataSeries)) {
return std::make_unique<PlottablesHelper<VectorSeries> >(*vectorSeries);
}
else {
return std::make_unique<PlottablesHelper<IDataSeries> >(*dataSeries);
}
}
} // namespace
PlottablesMap VisualizationGraphHelper::create(std::shared_ptr<Variable> variable,
QCustomPlot &plot) noexcept
{
if (variable) {
auto helper = createHelper(variable->dataSeries());
auto plottables = helper->create(plot);
return plottables;
}
else {
qCDebug(LOG_VisualizationGraphHelper())
<< QObject::tr("Can't create graph plottables : the variable is null");
return PlottablesMap{};
}
}
void VisualizationGraphHelper::updateData(PlottablesMap &plottables,
std::shared_ptr<IDataSeries> dataSeries,
const SqpRange &dateTime)
{
auto helper = createHelper(dataSeries);
helper->update(plottables, dateTime);
}