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VisualizationGraphWidget.cpp
173 lines | 6.1 KiB | text/x-c | CppLexer
/ gui / src / Visualization / VisualizationGraphWidget.cpp
#include "Visualization/VisualizationGraphWidget.h"
#include "Visualization/IVisualizationWidgetVisitor.h"
#include "Visualization/VisualizationGraphHelper.h"
#include "ui_VisualizationGraphWidget.h"
#include <Data/ArrayData.h>
#include <Data/IDataSeries.h>
#include <SqpApplication.h>
#include <Variable/Variable.h>
#include <Variable/VariableController.h>
#include <unordered_map>
Q_LOGGING_CATEGORY(LOG_VisualizationGraphWidget, "VisualizationGraphWidget")
namespace {
/// Key pressed to enable zoom on horizontal axis
const auto HORIZONTAL_ZOOM_MODIFIER = Qt::NoModifier;
/// Key pressed to enable zoom on vertical axis
const auto VERTICAL_ZOOM_MODIFIER = Qt::ControlModifier;
} // namespace
struct VisualizationGraphWidget::VisualizationGraphWidgetPrivate {
// 1 variable -> n qcpplot
std::unordered_multimap<std::shared_ptr<Variable>, QCPAbstractPlottable *>
m_VariableToPlotMultiMap;
};
VisualizationGraphWidget::VisualizationGraphWidget(const QString &name, QWidget *parent)
: QWidget{parent},
ui{new Ui::VisualizationGraphWidget},
impl{spimpl::make_unique_impl<VisualizationGraphWidgetPrivate>()}
{
ui->setupUi(this);
// qcpplot title
ui->widget->plotLayout()->insertRow(0);
ui->widget->plotLayout()->addElement(0, 0, new QCPTextElement{ui->widget, name});
// Set qcpplot properties :
// - Drag (on x-axis) and zoom are enabled
// - Mouse wheel on qcpplot is intercepted to determine the zoom orientation
ui->widget->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
ui->widget->axisRect()->setRangeDrag(Qt::Horizontal);
connect(ui->widget, &QCustomPlot::mouseWheel, this, &VisualizationGraphWidget::onMouseWheel);
connect(ui->widget->xAxis, static_cast<void (QCPAxis::*)(const QCPRange &, const QCPRange &)>(
&QCPAxis::rangeChanged),
this, &VisualizationGraphWidget::onRangeChanged);
}
VisualizationGraphWidget::~VisualizationGraphWidget()
{
delete ui;
}
void VisualizationGraphWidget::addVariable(std::shared_ptr<Variable> variable)
{
// Uses delegate to create the qcpplot components according to the variable
auto createdPlottables = VisualizationGraphHelper::create(variable, *ui->widget);
for (auto createdPlottable : qAsConst(createdPlottables)) {
impl->m_VariableToPlotMultiMap.insert({variable, createdPlottable});
}
connect(variable.get(), SIGNAL(dataCacheUpdated()), this, SLOT(onDataCacheVariableUpdated()));
}
void VisualizationGraphWidget::accept(IVisualizationWidgetVisitor *visitor)
{
if (visitor) {
visitor->visit(this);
}
else {
qCCritical(LOG_VisualizationGraphWidget())
<< tr("Can't visit widget : the visitor is null");
}
}
bool VisualizationGraphWidget::canDrop(const Variable &variable) const
{
/// @todo : for the moment, a graph can always accomodate a variable
Q_UNUSED(variable);
return true;
}
void VisualizationGraphWidget::close()
{
// The main view cannot be directly closed.
return;
}
QString VisualizationGraphWidget::name() const
{
if (auto title = dynamic_cast<QCPTextElement *>(ui->widget->plotLayout()->elementAt(0))) {
return title->text();
}
else {
return QString{};
}
}
void VisualizationGraphWidget::onRangeChanged(const QCPRange &t1, const QCPRange &t2)
{
qCDebug(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::onRangeChanged");
for (auto it = impl->m_VariableToPlotMultiMap.cbegin();
it != impl->m_VariableToPlotMultiMap.cend(); ++it) {
auto variable = it->first;
auto tolerance = 0.1 * (t2.upper - t2.lower);
auto dateTime = SqpDateTime{t2.lower - tolerance, t2.upper + tolerance};
qCInfo(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::onRangeChanged")
<< variable->dataSeries()->xAxisData()->size();
if (!variable->contains(dateTime)) {
sqpApp->variableController().requestDataLoading(variable, dateTime);
}
}
}
void VisualizationGraphWidget::onMouseWheel(QWheelEvent *event) noexcept
{
auto zoomOrientations = QFlags<Qt::Orientation>{};
// Lambda that enables a zoom orientation if the key modifier related to this orientation has
// been pressed
auto enableOrientation
= [&zoomOrientations, event](const auto &orientation, const auto &modifier) {
auto orientationEnabled = event->modifiers().testFlag(modifier);
zoomOrientations.setFlag(orientation, orientationEnabled);
};
enableOrientation(Qt::Vertical, VERTICAL_ZOOM_MODIFIER);
enableOrientation(Qt::Horizontal, HORIZONTAL_ZOOM_MODIFIER);
ui->widget->axisRect()->setRangeZoom(zoomOrientations);
}
void VisualizationGraphWidget::onDataCacheVariableUpdated()
{
// NOTE:
// We don't want to call the method for each component of a variable unitarily, but for all
// its components at once (eg its three components in the case of a vector).
// The unordered_multimap does not do this easily, so the question is whether to:
// - use an ordered_multimap and the algos of std to group the values by key
// - use a map (unique keys) and store as values directly the list of components
for (auto it = impl->m_VariableToPlotMultiMap.cbegin();
it != impl->m_VariableToPlotMultiMap.cend(); ++it) {
auto variable = it->first;
VisualizationGraphHelper::updateData(QVector<QCPAbstractPlottable *>{} << it->second,
variable->dataSeries(), variable->dateTime());
}
}
void VisualizationGraphWidget::updateDisplay(std::shared_ptr<Variable> variable)
{
auto abstractPlotableItPair = impl->m_VariableToPlotMultiMap.equal_range(variable);
auto abstractPlotableVect = QVector<QCPAbstractPlottable *>{};
for (auto it = abstractPlotableItPair.first; it != abstractPlotableItPair.second; ++it) {
abstractPlotableVect.push_back(it->second);
}
VisualizationGraphHelper::updateData(abstractPlotableVect, variable->dataSeries(),
variable->dateTime());
}