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Creates validator interface
Creates validator interface

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AxisRenderingUtils.cpp
177 lines | 5.8 KiB | text/x-c | CppLexer
#include "Visualization/AxisRenderingUtils.h"
#include <Data/ScalarSeries.h>
#include <Data/SpectrogramSeries.h>
#include <Data/VectorSeries.h>
#include <Visualization/SqpColorScale.h>
#include <Visualization/qcustomplot.h>
Q_LOGGING_CATEGORY(LOG_AxisRenderingUtils, "AxisRenderingUtils")
namespace {
const auto DATETIME_FORMAT = QStringLiteral("yyyy/MM/dd hh:mm:ss:zzz");
/// Format for datetimes on a axis
const auto DATETIME_TICKER_FORMAT = QStringLiteral("yyyy/MM/dd \nhh:mm:ss");
const auto NUMBER_FORMAT = 'g';
const auto NUMBER_PRECISION = 9;
/// Generates the appropriate ticker for an axis, depending on whether the axis displays time or
/// non-time data
QSharedPointer<QCPAxisTicker> axisTicker(bool isTimeAxis, QCPAxis::ScaleType scaleType)
{
if (isTimeAxis) {
auto dateTicker = QSharedPointer<QCPAxisTickerDateTime>::create();
dateTicker->setDateTimeFormat(DATETIME_TICKER_FORMAT);
dateTicker->setDateTimeSpec(Qt::UTC);
return dateTicker;
}
else if (scaleType == QCPAxis::stLogarithmic) {
return QSharedPointer<QCPAxisTickerLog>::create();
}
else {
// default ticker
return QSharedPointer<QCPAxisTicker>::create();
}
}
/**
* Sets properties of the axis passed as parameter
* @param axis the axis to set
* @param unit the unit to set for the axis
* @param scaleType the scale type to set for the axis
*/
void setAxisProperties(QCPAxis &axis, const Unit &unit,
QCPAxis::ScaleType scaleType = QCPAxis::stLinear)
{
// label (unit name)
axis.setLabel(unit.m_Name);
// scale type
axis.setScaleType(scaleType);
if (scaleType == QCPAxis::stLogarithmic) {
// Scientific notation
axis.setNumberPrecision(0);
axis.setNumberFormat("eb");
}
// ticker (depending on the type of unit)
axis.setTicker(axisTicker(unit.m_TimeUnit, scaleType));
}
/**
* Delegate used to set axes properties
*/
template <typename T, typename Enabled = void>
struct AxisSetter {
static void setProperties(T &, QCustomPlot &, SqpColorScale &)
{
// Default implementation does nothing
qCCritical(LOG_AxisRenderingUtils()) << "Can't set axis properties: unmanaged type of data";
}
};
/**
* Specialization of AxisSetter for scalars and vectors
* @sa ScalarSeries
* @sa VectorSeries
*/
template <typename T>
struct AxisSetter<T, typename std::enable_if_t<std::is_base_of<ScalarSeries, T>::value
or std::is_base_of<VectorSeries, T>::value> > {
static void setProperties(T &dataSeries, QCustomPlot &plot, SqpColorScale &)
{
dataSeries.lockRead();
auto xAxisUnit = dataSeries.xAxisUnit();
auto valuesUnit = dataSeries.valuesUnit();
dataSeries.unlock();
setAxisProperties(*plot.xAxis, xAxisUnit);
setAxisProperties(*plot.yAxis, valuesUnit);
}
};
/**
* Specialization of AxisSetter for spectrograms
* @sa SpectrogramSeries
*/
template <typename T>
struct AxisSetter<T, typename std::enable_if_t<std::is_base_of<SpectrogramSeries, T>::value> > {
static void setProperties(T &dataSeries, QCustomPlot &plot, SqpColorScale &colorScale)
{
dataSeries.lockRead();
auto xAxisUnit = dataSeries.xAxisUnit();
auto yAxisUnit = dataSeries.yAxisUnit();
auto valuesUnit = dataSeries.valuesUnit();
dataSeries.unlock();
setAxisProperties(*plot.xAxis, xAxisUnit);
setAxisProperties(*plot.yAxis, yAxisUnit, QCPAxis::stLogarithmic);
// Displays color scale in plot
plot.plotLayout()->insertRow(0);
plot.plotLayout()->addElement(0, 0, colorScale.m_Scale);
colorScale.m_Scale->setType(QCPAxis::atTop);
colorScale.m_Scale->setMinimumMargins(QMargins{0, 0, 0, 0});
// Aligns color scale with axes
auto marginGroups = plot.axisRect()->marginGroups();
for (auto it = marginGroups.begin(), end = marginGroups.end(); it != end; ++it) {
colorScale.m_Scale->setMarginGroup(it.key(), it.value());
}
// Set color scale properties
setAxisProperties(*colorScale.m_Scale->axis(), valuesUnit, QCPAxis::stLogarithmic);
colorScale.m_AutomaticThreshold = true;
}
};
/**
* Default implementation of IAxisHelper, which takes data series to set axes properties
* @tparam T the data series' type
*/
template <typename T>
struct AxisHelper : public IAxisHelper {
explicit AxisHelper(T &dataSeries) : m_DataSeries{dataSeries} {}
void setProperties(QCustomPlot &plot, SqpColorScale &colorScale) override
{
AxisSetter<T>::setProperties(m_DataSeries, plot, colorScale);
}
T &m_DataSeries;
};
} // namespace
QString formatValue(double value, const QCPAxis &axis)
{
// If the axis is a time axis, formats the value as a date
if (auto axisTicker = qSharedPointerDynamicCast<QCPAxisTickerDateTime>(axis.ticker())) {
return DateUtils::dateTime(value, axisTicker->dateTimeSpec()).toString(DATETIME_FORMAT);
}
else {
return QString::number(value, NUMBER_FORMAT, NUMBER_PRECISION);
}
}
std::unique_ptr<IAxisHelper>
IAxisHelperFactory::create(std::shared_ptr<IDataSeries> dataSeries) noexcept
{
if (auto scalarSeries = std::dynamic_pointer_cast<ScalarSeries>(dataSeries)) {
return std::make_unique<AxisHelper<ScalarSeries> >(*scalarSeries);
}
else if (auto spectrogramSeries = std::dynamic_pointer_cast<SpectrogramSeries>(dataSeries)) {
return std::make_unique<AxisHelper<SpectrogramSeries> >(*spectrogramSeries);
}
else if (auto vectorSeries = std::dynamic_pointer_cast<VectorSeries>(dataSeries)) {
return std::make_unique<AxisHelper<VectorSeries> >(*vectorSeries);
}
else {
return std::make_unique<AxisHelper<IDataSeries> >(*dataSeries);
}
}