HG_REPOSITORIES/LPP/SciQLOP_Repos/SciQLop Commit - r311:1ae4a887fc77

Merge branch 'feature/VariousCorrections' into develop

Alexandre Leroux -

r311:1ae4a887fc77

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r311:1ae4a887fc77

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core/include/Common/MetaTypes.h created 644 +46 0

@@ -0,0 +1,46
	1	#ifndef SCIQLOP_METATYPES_H
	2	#define SCIQLOP_METATYPES_H
	3
	4	#include <QMetaType>
	5
	6	/**
	7	* Struct used to create an instance that registers a type in Qt for signals / slots mechanism
	8	* @tparam T the type to register
	9	*/
	10	template <typename T>
	11	struct MetaTypeRegistry {
	12	explicit MetaTypeRegistry() { qRegisterMetaType<T>(); }
	13	};
	14
	15	/**
	16	* This macro can be used to :
	17	* - declare a type as a Qt meta type
	18	* - and register it (through a static instance) at the launch of SciQlop, so it can be passed in
	19	* Qt signals/slots
	20	*
	21	* It can be used both in .h or in .cpp files
	22	*
	23	* @param NAME name of the instance under which the type will be registered (in uppercase)
	24	* @param TYPE type to register
	25	*
	26	* Example:
	27	* ~~~cpp
	28	* // The following macro :
	29	* // - declares std::shared_ptr<Variable> as a Qt meta type
	30	* // - registers it through an instance named VAR_SHARED_PTR
	31	* SCIQLOP_REGISTER_META_TYPE(VAR_SHARED_PTR, std::shared_ptr<Variable>)
	32	*
	33	* // The following macro :
	34	* // - declares a raw pointer of Variable as a Qt meta type
	35	* // - registers it through an instance named VAR_RAW_PTR
	36	* SCIQLOP_REGISTER_META_TYPE(VAR_RAW_PTR, Variable*)
	37	* ~~~
	38	*
	39	*/
	40	// clang-format off
	41	#define SCIQLOP_REGISTER_META_TYPE(NAME, TYPE) \
	42	Q_DECLARE_METATYPE(TYPE) \
	43	const auto NAME = MetaTypeRegistry<TYPE>{}; \
	44	// clang-format on
	45
	46	#endif // SCIQLOP_METATYPES_H

app/src/MainWindow.cpp 0 -2

             /*------------------------------------------------------------------------------
             -- This file is a part of the SciQLop Software
             -- Copyright (C) 2017, Plasma Physics Laboratory - CNRS
             --
             -- This program is free software; you can redistribute it and/or modify
             -- it under the terms of the GNU General Public License as published by
             -- the Free Software Foundation; either version 2 of the License, or
             -- (at your option) any later version.
             --
             -- This program is distributed in the hope that it will be useful,
             -- but WITHOUT ANY WARRANTY; without even the implied warranty of
             -- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
             -- GNU General Public License for more details.
             --
             -- You should have received a copy of the GNU General Public License
             -- along with this program; if not, write to the Free Software
             -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
             -------------------------------------------------------------------------------*/
             /*-- Author : Alexis Jeandet
             -- Mail : alexis.jeandet@member.fsf.org
             ----------------------------------------------------------------------------*/
             #include "MainWindow.h"
             #include "ui_MainWindow.h"
             #include <DataSource/DataSourceController.h>
             #include <DataSource/DataSourceWidget.h>
             #include <SidePane/SqpSidePane.h>
             #include <SqpApplication.h>
             #include <Time/TimeController.h>
             #include <TimeWidget/TimeWidget.h>
             #include <Variable/Variable.h>
             #include <Variable/VariableController.h>
             #include <Visualization/VisualizationController.h>
             #include <QAction>
             #include <QDate>
             #include <QDateTime>
             #include <QDir>
             #include <QFileDialog>
             #include <QToolBar>
             #include <QToolButton>
             #include <memory.h>
             //#include <omp.h>
             //#include <network/filedownloader.h>
             //#include <qlopdatabase.h>
             //#include <qlopsettings.h>
             //#include <qlopgui.h>
             //#include <spacedata.h>
             //#include "qlopcore.h"
             //#include "qlopcodecmanager.h"
             //#include "cdfcodec.h"
             //#include "amdatxtcodec.h"
             //#include <qlopplotmanager.h>
             #include "iostream"
             Q_LOGGING_CATEGORY(LOG_MainWindow, "MainWindow")
             namespace {
             const auto LEFTMAININSPECTORWIDGETSPLITTERINDEX = 0;
             const auto LEFTINSPECTORSIDEPANESPLITTERINDEX = 1;
             const auto VIEWPLITTERINDEX = 2;
             const auto RIGHTINSPECTORSIDEPANESPLITTERINDEX = 3;
             const auto RIGHTMAININSPECTORWIDGETSPLITTERINDEX = 4;
             }
             class MainWindow::MainWindowPrivate {
             public:
                 QSize m_LastOpenLeftInspectorSize;
                 QSize m_LastOpenRightInspectorSize;
             };
             MainWindow::MainWindow(QWidget *parent)
                     : QMainWindow{parent},
                       m_Ui{new Ui::MainWindow},
                       impl{spimpl::make_unique_impl<MainWindowPrivate>()}
             {
                 m_Ui->setupUi(this);
                 m_Ui->splitter->setCollapsible(LEFTINSPECTORSIDEPANESPLITTERINDEX, false);
                 m_Ui->splitter->setCollapsible(RIGHTINSPECTORSIDEPANESPLITTERINDEX, false);
                 auto leftSidePane = m_Ui->leftInspectorSidePane->sidePane();
                 auto openLeftInspectorAction = new QAction{QIcon{
                                                                ":/icones/previous.png",
                                                            },
                                                            tr("Show/hide the left inspector"), this};
                 auto spacerLeftTop = new QWidget{};
                 spacerLeftTop->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
                 auto spacerLeftBottom = new QWidget{};
                 spacerLeftBottom->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
                 leftSidePane->addWidget(spacerLeftTop);
                 leftSidePane->addAction(openLeftInspectorAction);
                 leftSidePane->addWidget(spacerLeftBottom);
                 auto rightSidePane = m_Ui->rightInspectorSidePane->sidePane();
                 auto openRightInspectorAction = new QAction{QIcon{
                                                                 ":/icones/next.png",
                                                             },
                                                             tr("Show/hide the right inspector"), this};
                 auto spacerRightTop = new QWidget{};
                 spacerRightTop->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
                 auto spacerRightBottom = new QWidget{};
                 spacerRightBottom->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
                 rightSidePane->addWidget(spacerRightTop);
                 rightSidePane->addAction(openRightInspectorAction);
                 rightSidePane->addWidget(spacerRightBottom);
                 openLeftInspectorAction->setCheckable(true);
                 openRightInspectorAction->setCheckable(true);
                 auto openInspector = [this](bool checked, bool right, auto action) {
                     action->setIcon(QIcon{(checked xor right) ? ":/icones/next.png" : ":/icones/previous.png"});
                     auto &lastInspectorSize
                         = right ? impl->m_LastOpenRightInspectorSize : impl->m_LastOpenLeftInspectorSize;
                     auto nextInspectorSize = right ? m_Ui->rightMainInspectorWidget->size()
                                                    : m_Ui->leftMainInspectorWidget->size();
                     // Update of the last opened geometry
                     if (checked) {
                         lastInspectorSize = nextInspectorSize;
                     }
                     auto startSize = lastInspectorSize;
                     auto endSize = startSize;
                     endSize.setWidth(0);
                     auto splitterInspectorIndex
                         = right ? RIGHTMAININSPECTORWIDGETSPLITTERINDEX : LEFTMAININSPECTORWIDGETSPLITTERINDEX;
                     auto currentSizes = m_Ui->splitter->sizes();
                     if (checked) {
                         // adjust sizes individually here, e.g.
                         currentSizes[splitterInspectorIndex] -= lastInspectorSize.width();
                         currentSizes[VIEWPLITTERINDEX] += lastInspectorSize.width();
                         m_Ui->splitter->setSizes(currentSizes);
                     }
                     else {
                         // adjust sizes individually here, e.g.
                         currentSizes[splitterInspectorIndex] += lastInspectorSize.width();
                         currentSizes[VIEWPLITTERINDEX] -= lastInspectorSize.width();
                         m_Ui->splitter->setSizes(currentSizes);
                     }
                 };
                 connect(openLeftInspectorAction, &QAction::triggered,
                         [openInspector, openLeftInspectorAction](bool checked) {
                             openInspector(checked, false, openLeftInspectorAction);
                         });
                 connect(openRightInspectorAction, &QAction::triggered,
                         [openInspector, openRightInspectorAction](bool checked) {
                             openInspector(checked, true, openRightInspectorAction);
                         });
                 this->menuBar()->addAction(tr("File"));
                 auto mainToolBar = this->addToolBar(QStringLiteral("MainToolBar"));
                 auto timeWidget = new TimeWidget{};
                 mainToolBar->addWidget(timeWidget);
                 // Widgets / controllers connections
                 // DataSource
                 connect(&sqpApp->dataSourceController(), SIGNAL(dataSourceItemSet(DataSourceItem *)),
                         m_Ui->dataSourceWidget, SLOT(addDataSource(DataSourceItem *)));
                 // Time
                 connect(timeWidget, SIGNAL(timeUpdated(SqpDateTime)), &sqpApp->timeController(),
                         SLOT(onTimeToUpdate(SqpDateTime)));
-                qRegisterMetaType<SqpDateTime>();
                 connect(&sqpApp->timeController(), SIGNAL(timeUpdated(SqpDateTime)),
                         &sqpApp->variableController(), SLOT(onDateTimeOnSelection(SqpDateTime)));
                 // Widgets / widgets connections
-                qRegisterMetaType<std::shared_ptr<Variable> >();
                 // For the following connections, we use DirectConnection to allow each widget that can
                 // potentially attach a menu to the variable's menu to do so before this menu is displayed.
                 // The order of connections is also important, since it determines the order in which each
                 // widget will attach its menu
                 connect(
                     m_Ui->variableInspectorWidget,
                     SIGNAL(tableMenuAboutToBeDisplayed(QMenu *, const QVector<std::shared_ptr<Variable> > &)),
                     m_Ui->view, SLOT(attachVariableMenu(QMenu *, const QVector<std::shared_ptr<Variable> > &)),
                     Qt::DirectConnection);
                 /*    QLopGUI::registerMenuBar(menuBar());
                     this->setWindowIcon(QIcon(":/sciqlopLOGO.svg"));
                     this->m_progressWidget = new QWidget();
                     this->m_progressLayout = new QVBoxLayout(this->m_progressWidget);
                     this->m_progressWidget->setLayout(this->m_progressLayout);
                     this->m_progressWidget->setWindowModality(Qt::WindowModal);
                     m_progressThreadIds = (int*) malloc(OMP_THREADS*sizeof(int));
                     for(int i=0;i<OMP_THREADS;i++)
                     {
                         this->m_progress.append(new QProgressBar(this->m_progressWidget));
                         this->m_progress.last()->setMinimum(0);
                         this->m_progress.last()->setMaximum(100);
                         this->m_progressLayout->addWidget(this->m_progress.last());
                         this->m_progressWidget->hide();
                         this->m_progressThreadIds[i] = -1;
                     }
                     this->m_progressWidget->setWindowTitle("Loading File");
                     const QList<QLopService*>ServicesToLoad=QList<QLopService*>()
                             << QLopCore::self()
                             << QLopPlotManager::self()
                             << QLopCodecManager::self()
                             << FileDownloader::self()
                             << QLopDataBase::self()
                             << SpaceData::self();
                     CDFCodec::registerToManager();
                     AMDATXTCodec::registerToManager();
                     for(int i=0;i<ServicesToLoad.count();i++)
                     {
                         qDebug()<<ServicesToLoad.at(i)->serviceName();
                         ServicesToLoad.at(i)->initialize(); //must be called before getGUI
                         QDockWidget* wdgt=ServicesToLoad.at(i)->getGUI();
                         if(wdgt)
                         {
                             wdgt->setAllowedAreas(Qt::AllDockWidgetAreas);
                             this->addDockWidget(Qt::TopDockWidgetArea,wdgt);
                         }
                         PythonQt::self()->getMainModule().addObject(ServicesToLoad.at(i)->serviceName(),(QObject*)ServicesToLoad.at(i));
                     }*/
             }
             MainWindow::~MainWindow()
             {
             }
             void MainWindow::changeEvent(QEvent *e)
             {
                 QMainWindow::changeEvent(e);
                 switch (e->type()) {
                     case QEvent::LanguageChange:
                         m_Ui->retranslateUi(this);
                         break;
                     default:
                         break;
                 }
             }

core/include/Data/DataSeries.h +24 -1

             #ifndef SCIQLOP_DATASERIES_H
             #define SCIQLOP_DATASERIES_H
             #include <Data/ArrayData.h>
             #include <Data/IDataSeries.h>
             #include <QLoggingCategory>
             #include <memory>
             Q_DECLARE_LOGGING_CATEGORY(LOG_DataSeries)
             Q_LOGGING_CATEGORY(LOG_DataSeries, "DataSeries")
             /**
              * @brief The DataSeries class is the base (abstract) implementation of IDataSeries.
              *
              * It proposes to set a dimension for the values data
              *
              * @tparam Dim The dimension of the values data
              *
              */
             template <int Dim>
             class DataSeries : public IDataSeries {
             public:
                 /// @sa IDataSeries::xAxisData()
                 std::shared_ptr<ArrayData<1> > xAxisData() override { return m_XAxisData; }
+                const std::shared_ptr<ArrayData<1> > xAxisData() const { return m_XAxisData; }
                 /// @sa IDataSeries::xAxisUnit()
                 Unit xAxisUnit() const override { return m_XAxisUnit; }
                 /// @return the values dataset
-                std::shared_ptr<ArrayData<Dim> > valuesData() const { return m_ValuesData; }
+                std::shared_ptr<ArrayData<Dim> > valuesData() { return m_ValuesData; }
+                const std::shared_ptr<ArrayData<Dim> > valuesData() const { return m_ValuesData; }
                 /// @sa IDataSeries::valuesUnit()
                 Unit valuesUnit() const override { return m_ValuesUnit; }
                 /// @sa IDataSeries::merge()
                 void merge(IDataSeries *dataSeries) override
                 {
                     if (auto dimDataSeries = dynamic_cast<DataSeries<Dim> *>(dataSeries)) {
                         m_XAxisData->merge(*dimDataSeries->xAxisData());
                         m_ValuesData->merge(*dimDataSeries->valuesData());
                     }
                     else {
                         qCWarning(LOG_DataSeries())
                             << QObject::tr("Dection of a type of IDataSeries we cannot merge with !");
                     }
                 }
             protected:
                 /// Protected ctor (DataSeries is abstract)
                 explicit DataSeries(std::shared_ptr<ArrayData<1> > xAxisData, const Unit &xAxisUnit,
                                     std::shared_ptr<ArrayData<Dim> > valuesData, const Unit &valuesUnit)
                         : m_XAxisData{xAxisData},
                           m_XAxisUnit{xAxisUnit},
                           m_ValuesData{valuesData},
                           m_ValuesUnit{valuesUnit}
                 {
                 }
+                /// Copy ctor
+                explicit DataSeries(const DataSeries<Dim> &other)
+                        : m_XAxisData{std::make_shared<ArrayData<1> >(*other.m_XAxisData)},
+                          m_XAxisUnit{other.m_XAxisUnit},
+                          m_ValuesData{std::make_shared<ArrayData<Dim> >(*other.m_ValuesData)},
+                          m_ValuesUnit{other.m_ValuesUnit}
+                {
+                }
+                /// Assignment operator
+                template <int D>
+                DataSeries &operator=(DataSeries<D> other)
+                {
+                    std::swap(m_XAxisData, other.m_XAxisData);
+                    std::swap(m_XAxisUnit, other.m_XAxisUnit);
+                    std::swap(m_ValuesData, other.m_ValuesData);
+                    std::swap(m_ValuesUnit, other.m_ValuesUnit);
+                    return *this;
+                }
             private:
                 std::shared_ptr<ArrayData<1> > m_XAxisData;
                 Unit m_XAxisUnit;
                 std::shared_ptr<ArrayData<Dim> > m_ValuesData;
                 Unit m_ValuesUnit;
             };
             #endif // SCIQLOP_DATASERIES_H

core/include/Data/IDataProvider.h +5 -2

             #ifndef SCIQLOP_IDATAPROVIDER_H
             #define SCIQLOP_IDATAPROVIDER_H
             #include <memory>
             #include <QObject>
+            #include <Common/MetaTypes.h>
             #include <Data/SqpDateTime.h>
             class DataProviderParameters;
             class IDataSeries;
             /**
              * @brief The IDataProvider interface aims to declare a data provider.
              *
              * A data provider is an entity that generates data and returns it according to various parameters
              * (time interval, product to retrieve the data, etc.)
              *
              * @sa IDataSeries
              */
             class IDataProvider : public QObject {
                 Q_OBJECT
             public:
                 virtual ~IDataProvider() noexcept = default;
-                virtual std::unique_ptr<IDataSeries>
+                virtual std::shared_ptr<IDataSeries>
                 retrieveData(const DataProviderParameters &parameters) const = 0;
                 virtual void requestDataLoading(const QVector<SqpDateTime> &dateTimeList) = 0;
             signals:
                 void dataProvided(std::shared_ptr<IDataSeries> dateSerie, const SqpDateTime &dateTime);
             };
             // Required for using shared_ptr in signals/slots
-            Q_DECLARE_METATYPE(std::shared_ptr<IDataProvider>)
+            SCIQLOP_REGISTER_META_TYPE(IDATAPROVIDER_PTR_REGISTRY, std::shared_ptr<IDataProvider>)
             #endif // SCIQLOP_IDATAPROVIDER_H

core/include/Data/IDataSeries.h +7 -2

             #ifndef SCIQLOP_IDATASERIES_H
             #define SCIQLOP_IDATASERIES_H
+            #include <Common/MetaTypes.h>
             #include <memory>
-            #include <QObject>
             #include <QString>
             template <int Dim>
             class ArrayData;
             struct Unit {
                 explicit Unit(const QString &name = {}, bool timeUnit = false)
                         : m_Name{name}, m_TimeUnit{timeUnit}
                 {
                 }
                 QString m_Name;  ///< Unit name
                 bool m_TimeUnit; ///< The unit is a unit of time
             };
             /**
              * @brief The IDataSeries aims to declare a data series.
              *
              * A data series is an entity that contains at least :
              * - one dataset representing the x-axis
              * - one dataset representing the values
              *
              * Each dataset is represented by an ArrayData, and is associated with a unit.
              *
              * An ArrayData can be unidimensional or two-dimensional, depending on the implementation of the
              * IDataSeries. The x-axis dataset is always unidimensional.
              *
              * @sa ArrayData
              */
             class IDataSeries {
             public:
                 virtual ~IDataSeries() noexcept = default;
                 /// Returns the x-axis dataset
                 virtual std::shared_ptr<ArrayData<1> > xAxisData() = 0;
+                /// Returns the x-axis dataset (as const)
+                virtual const std::shared_ptr<ArrayData<1> > xAxisData() const = 0;
                 virtual Unit xAxisUnit() const = 0;
                 virtual Unit valuesUnit() const = 0;
                 virtual void merge(IDataSeries *dataSeries) = 0;
+                virtual std::unique_ptr<IDataSeries> clone() const = 0;
             };
             // Required for using shared_ptr in signals/slots
-            Q_DECLARE_METATYPE(std::shared_ptr<IDataSeries>)
+            SCIQLOP_REGISTER_META_TYPE(IDATASERIES_PTR_REGISTRY, std::shared_ptr<IDataSeries>)
             #endif // SCIQLOP_IDATASERIES_H

core/include/Data/ScalarSeries.h +2 0

             #ifndef SCIQLOP_SCALARSERIES_H
             #define SCIQLOP_SCALARSERIES_H
             #include <Data/DataSeries.h>
             /**
              * @brief The ScalarSeries class is the implementation for a data series representing a scalar.
              */
             class ScalarSeries : public DataSeries<1> {
             public:
                 /**
                  * Ctor
                  * @param size the number of data the series will hold
                  * @param xAxisUnit x-axis unit
                  * @param valuesUnit values unit
                  */
                 explicit ScalarSeries(int size, const Unit &xAxisUnit, const Unit &valuesUnit);
                 /**
                  * Sets data for a specific index. The index has to be valid to be effective
                  * @param index the index to which the data will be set
                  * @param x the x-axis data
                  * @param value the value data
                  */
                 void setData(int index, double x, double value) noexcept;
+                std::unique_ptr<IDataSeries> clone() const;
             };
             #endif // SCIQLOP_SCALARSERIES_H

core/include/Data/SqpDateTime.h +3 -1

             #ifndef SCIQLOP_SQPDATETIME_H
             #define SCIQLOP_SQPDATETIME_H
             #include <QObject>
             #include <QDateTime>
             #include <QDebug>
+            #include <Common/MetaTypes.h>
             /**
              * @brief The SqpDateTime struct holds the information of time parameters
              */
             struct SqpDateTime {
                 /// Start time
                 double m_TStart;
                 /// End time
                 double m_TEnd;
                 bool contains(const SqpDateTime &dateTime)
                 {
                     return (m_TStart <= dateTime.m_TStart && m_TEnd >= dateTime.m_TEnd);
                 }
                 bool intersect(const SqpDateTime &dateTime)
                 {
                     return (m_TEnd >= dateTime.m_TStart && m_TStart <= dateTime.m_TEnd);
                 }
             };
             inline QDebug operator<<(QDebug d, SqpDateTime obj)
             {
                 auto tendDateTimeStart = QDateTime::fromMSecsSinceEpoch(obj.m_TStart * 1000);
                 auto tendDateTimeEnd = QDateTime::fromMSecsSinceEpoch(obj.m_TEnd * 1000);
                 //        QDebug << "ts: " << tendDateTimeStart << " te: " << tendDateTimeEnd;
                 d << "ts: " << tendDateTimeStart << " te: " << tendDateTimeEnd;
                 return d;
             }
             // Required for using shared_ptr in signals/slots
-            Q_DECLARE_METATYPE(SqpDateTime)
+            SCIQLOP_REGISTER_META_TYPE(SQPDATETIME_REGISTRY, SqpDateTime)
             #endif // SCIQLOP_SQPDATETIME_H

core/include/Variable/Variable.h +3 -4

             #ifndef SCIQLOP_VARIABLE_H
             #define SCIQLOP_VARIABLE_H
             #include <Data/SqpDateTime.h>
             #include <QLoggingCategory>
             #include <QObject>
+            #include <Common/MetaTypes.h>
             #include <Common/spimpl.h>
             Q_DECLARE_LOGGING_CATEGORY(LOG_Variable)
             class IDataSeries;
             class QString;
             /**
              * @brief The Variable class represents a variable in SciQlop.
              */
             class Variable : public QObject {
                 Q_OBJECT
             public:
                 explicit Variable(const QString &name, const QString &unit, const QString &mission,
                                   const SqpDateTime &dateTime);
                 QString name() const noexcept;
                 QString mission() const noexcept;
                 QString unit() const noexcept;
                 SqpDateTime dateTime() const noexcept;
                 void setDateTime(const SqpDateTime &dateTime) noexcept;
                 /// @return the data of the variable, nullptr if there is no data
                 IDataSeries *dataSeries() const noexcept;
                 bool contains(const SqpDateTime &dateTime);
                 bool intersect(const SqpDateTime &dateTime);
-                void setDataSeries(std::unique_ptr<IDataSeries> dataSeries) noexcept;
             public slots:
-                void onAddDataSeries(std::shared_ptr<IDataSeries> dataSeries) noexcept;
+                void setDataSeries(std::shared_ptr<IDataSeries> dataSeries) noexcept;
             signals:
                 void updated();
             private:
                 class VariablePrivate;
                 spimpl::unique_impl_ptr<VariablePrivate> impl;
             };
             // Required for using shared_ptr in signals/slots
-            Q_DECLARE_METATYPE(std::shared_ptr<Variable>)
+            SCIQLOP_REGISTER_META_TYPE(VARIABLE_PTR_REGISTRY, std::shared_ptr<Variable>)
             #endif // SCIQLOP_VARIABLE_H

core/include/Variable/VariableModel.h +1 -1

             #ifndef SCIQLOP_VARIABLEMODEL_H
             #define SCIQLOP_VARIABLEMODEL_H
             #include <Data/SqpDateTime.h>
             #include <QAbstractTableModel>
             #include <QLoggingCategory>
             #include <Common/spimpl.h>
             Q_DECLARE_LOGGING_CATEGORY(LOG_VariableModel)
             class IDataSeries;
             class Variable;
             /**
              * @brief The VariableModel class aims to hold the variables that have been created in SciQlop
              */
             class VariableModel : public QAbstractTableModel {
             public:
                 explicit VariableModel(QObject *parent = nullptr);
                 /**
                  * Creates a new variable in the model
                  * @param name the name of the new variable
                  * @param dateTime the dateTime of the new variable
                  * @param defaultDataSeries the default data of the new variable
                  * @return the pointer to the new variable
                  */
                 std::shared_ptr<Variable>
                 createVariable(const QString &name, const SqpDateTime &dateTime,
-                               std::unique_ptr<IDataSeries> defaultDataSeries) noexcept;
+                               std::shared_ptr<IDataSeries> defaultDataSeries) noexcept;
                 std::shared_ptr<Variable> variable(int index) const;
                 // /////////////////////////// //
                 // QAbstractTableModel methods //
                 // /////////////////////////// //
                 virtual int columnCount(const QModelIndex &parent = QModelIndex{}) const override;
                 virtual int rowCount(const QModelIndex &parent = QModelIndex{}) const override;
                 virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;
                 virtual QVariant headerData(int section, Qt::Orientation orientation,
                                             int role = Qt::DisplayRole) const override;
             private:
                 class VariableModelPrivate;
                 spimpl::unique_impl_ptr<VariableModelPrivate> impl;
             };
             #endif // SCIQLOP_VARIABLEMODEL_H

core/src/Data/ScalarSeries.cpp +5 0

             #include <Data/ScalarSeries.h>
             ScalarSeries::ScalarSeries(int size, const Unit &xAxisUnit, const Unit &valuesUnit)
                     : DataSeries{std::make_shared<ArrayData<1> >(size), xAxisUnit,
                                  std::make_shared<ArrayData<1> >(size), valuesUnit}
             {
             }
             void ScalarSeries::setData(int index, double x, double value) noexcept
             {
                 xAxisData()->setData(index, x);
                 valuesData()->setData(index, value);
             }
+            std::unique_ptr<IDataSeries> ScalarSeries::clone() const
+            {
+                return std::make_unique<ScalarSeries>(*this);
+            }

core/src/Variable/Variable.cpp +9 -7

             #include "Variable/Variable.h"
             #include <Data/IDataSeries.h>
             #include <Data/SqpDateTime.h>
             Q_LOGGING_CATEGORY(LOG_Variable, "Variable")
             struct Variable::VariablePrivate {
                 explicit VariablePrivate(const QString &name, const QString &unit, const QString &mission,
                                          const SqpDateTime &dateTime)
                         : m_Name{name},
                           m_Unit{unit},
                           m_Mission{mission},
                           m_DateTime{dateTime},
                           m_DataSeries{nullptr}
                 {
                 }
                 QString m_Name;
                 QString m_Unit;
                 QString m_Mission;
                 SqpDateTime m_DateTime; // The dateTime available in the view and loaded. not the cache.
                 std::unique_ptr<IDataSeries> m_DataSeries;
             };
             Variable::Variable(const QString &name, const QString &unit, const QString &mission,
                                const SqpDateTime &dateTime)
                     : impl{spimpl::make_unique_impl<VariablePrivate>(name, unit, mission, dateTime)}
             {
             }
             QString Variable::name() const noexcept
             {
                 return impl->m_Name;
             }
             QString Variable::mission() const noexcept
             {
                 return impl->m_Mission;
             }
             QString Variable::unit() const noexcept
             {
                 return impl->m_Unit;
             }
             SqpDateTime Variable::dateTime() const noexcept
             {
                 return impl->m_DateTime;
             }
             void Variable::setDateTime(const SqpDateTime &dateTime) noexcept
             {
                 impl->m_DateTime = dateTime;
             }
-            void Variable::setDataSeries(std::unique_ptr<IDataSeries> dataSeries) noexcept
+            void Variable::setDataSeries(std::shared_ptr<IDataSeries> dataSeries) noexcept
             {
-                if (!impl->m_DataSeries) {
+                if (!dataSeries) {
-                    impl->m_DataSeries = std::move(dataSeries);
+                    /// @todo ALX : log
+                    return;
                 }
-            void Variable::onAddDataSeries(std::shared_ptr<IDataSeries> dataSeries) noexcept
+                // Inits the data series of the variable
+                if (!impl->m_DataSeries) {
-                if (impl->m_DataSeries) {
+                    impl->m_DataSeries = dataSeries->clone();
+                }
+                else {
                     impl->m_DataSeries->merge(dataSeries.get());
                     emit updated();
                 }
             }
             IDataSeries *Variable::dataSeries() const noexcept
             {
                 return impl->m_DataSeries.get();
             }
             bool Variable::contains(const SqpDateTime &dateTime)
             {
                 return impl->m_DateTime.contains(dateTime);
             }
             bool Variable::intersect(const SqpDateTime &dateTime)
             {
                 return impl->m_DateTime.intersect(dateTime);
             }

core/src/Variable/VariableController.cpp +2 -4

             #include <Variable/Variable.h>
             #include <Variable/VariableCacheController.h>
             #include <Variable/VariableController.h>
             #include <Variable/VariableModel.h>
             #include <Data/DataProviderParameters.h>
             #include <Data/IDataProvider.h>
             #include <Data/IDataSeries.h>
             #include <Time/TimeController.h>
             #include <QDateTime>
             #include <QMutex>
             #include <QThread>
             #include <QtCore/QItemSelectionModel>
             #include <unordered_map>
             Q_LOGGING_CATEGORY(LOG_VariableController, "VariableController")
             namespace {
             /// @todo Generates default dataseries, according to the provider passed in parameter. This method
             /// will be deleted when the timerange is recovered from SciQlop
-            std::unique_ptr<IDataSeries> generateDefaultDataSeries(const IDataProvider &provider,
+            std::shared_ptr<IDataSeries> generateDefaultDataSeries(const IDataProvider &provider,
                                                                    const SqpDateTime &dateTime) noexcept
             {
                 auto parameters = DataProviderParameters{dateTime};
                 return provider.retrieveData(parameters);
             }
             } // namespace
             struct VariableController::VariableControllerPrivate {
                 explicit VariableControllerPrivate(VariableController *parent)
                         : m_WorkingMutex{},
                           m_VariableModel{new VariableModel{parent}},
                           m_VariableSelectionModel{new QItemSelectionModel{m_VariableModel, parent}},
                           m_VariableCacheController{std::make_unique<VariableCacheController>()}
                 {
                 }
                 QMutex m_WorkingMutex;
                 /// Variable model. The VariableController has the ownership
                 VariableModel *m_VariableModel;
                 QItemSelectionModel *m_VariableSelectionModel;
                 TimeController *m_TimeController{nullptr};
                 std::unique_ptr<VariableCacheController> m_VariableCacheController;
                 std::unordered_map<std::shared_ptr<Variable>, std::shared_ptr<IDataProvider> >
                     m_VariableToProviderMap;
             };
             VariableController::VariableController(QObject *parent)
                     : QObject{parent}, impl{spimpl::make_unique_impl<VariableControllerPrivate>(this)}
             {
                 qCDebug(LOG_VariableController()) << tr("VariableController construction")
                                                   << QThread::currentThread();
             }
             VariableController::~VariableController()
             {
                 qCDebug(LOG_VariableController()) << tr("VariableController destruction")
                                                   << QThread::currentThread();
                 this->waitForFinish();
             }
             VariableModel *VariableController::variableModel() noexcept
             {
                 return impl->m_VariableModel;
             }
             QItemSelectionModel *VariableController::variableSelectionModel() noexcept
             {
                 return impl->m_VariableSelectionModel;
             }
             void VariableController::setTimeController(TimeController *timeController) noexcept
             {
                 impl->m_TimeController = timeController;
             }
             void VariableController::createVariable(const QString &name,
                                                     std::shared_ptr<IDataProvider> provider) noexcept
             {
                 if (!impl->m_TimeController) {
                     qCCritical(LOG_VariableController())
                         << tr("Impossible to create variable: The time controller is null");
                     return;
                 }
                 /// @todo : for the moment :
                 /// - the provider is only used to retrieve data from the variable for its initialization, but
                 /// it will be retained later
                 /// - default data are generated for the variable, without taking into account the timerange set
                 /// in sciqlop
                 auto dateTime = impl->m_TimeController->dateTime();
                 if (auto newVariable = impl->m_VariableModel->createVariable(
                         name, dateTime, generateDefaultDataSeries(*provider, dateTime))) {
                     // store the provider
                     impl->m_VariableToProviderMap[newVariable] = provider;
-                    qRegisterMetaType<std::shared_ptr<IDataSeries> >();
-                    qRegisterMetaType<SqpDateTime>();
                     connect(provider.get(), &IDataProvider::dataProvided, newVariable.get(),
-                            &Variable::onAddDataSeries);
+                            &Variable::setDataSeries);
                     // store in cache
                     impl->m_VariableCacheController->addDateTime(newVariable, dateTime);
                     // notify the creation
                     emit variableCreated(newVariable);
                 }
             }
             void VariableController::onDateTimeOnSelection(const SqpDateTime &dateTime)
             {
                 auto selectedRows = impl->m_VariableSelectionModel->selectedRows();
                 for (const auto &selectedRow : qAsConst(selectedRows)) {
                     if (auto selectedVariable = impl->m_VariableModel->variable(selectedRow.row())) {
                         selectedVariable->setDateTime(dateTime);
                         this->onRequestDataLoading(selectedVariable, dateTime);
                     }
                 }
             }
             void VariableController::onRequestDataLoading(std::shared_ptr<Variable> variable,
                                                           const SqpDateTime &dateTime)
             {
                 // we want to load data of the variable for the dateTime.
                 // First we check if the cache contains some of them.
                 // For the other, we ask the provider to give them.
                 if (variable) {
                     auto dateTimeListNotInCache
                         = impl->m_VariableCacheController->provideNotInCacheDateTimeList(variable, dateTime);
                     if (!dateTimeListNotInCache.empty()) {
                         // Ask the provider for each data on the dateTimeListNotInCache
                         impl->m_VariableToProviderMap.at(variable)->requestDataLoading(
                             std::move(dateTimeListNotInCache));
                         // store in cache
                         impl->m_VariableCacheController->addDateTime(variable, dateTime);
                     }
                     else {
                         emit variable->updated();
                     }
                 }
                 else {
                     qCCritical(LOG_VariableController()) << tr("Impossible to load data of a variable null");
                 }
             }
             void VariableController::initialize()
             {
                 qCDebug(LOG_VariableController()) << tr("VariableController init") << QThread::currentThread();
                 impl->m_WorkingMutex.lock();
                 qCDebug(LOG_VariableController()) << tr("VariableController init END");
             }
             void VariableController::finalize()
             {
                 impl->m_WorkingMutex.unlock();
             }
             void VariableController::waitForFinish()
             {
                 QMutexLocker locker{&impl->m_WorkingMutex};
             }

core/src/Variable/VariableModel.cpp +1 -1

             #include <Variable/Variable.h>
             #include <Variable/VariableModel.h>
             #include <Data/IDataSeries.h>
             #include <QDateTime>
             #include <QSize>
             Q_LOGGING_CATEGORY(LOG_VariableModel, "VariableModel")
             namespace {
             // Column indexes
             const auto NAME_COLUMN = 0;
             const auto TSTART_COLUMN = 1;
             const auto TEND_COLUMN = 2;
             const auto NB_COLUMNS = 3;
             // Column properties
             const auto DEFAULT_HEIGHT = 25;
             const auto DEFAULT_WIDTH = 100;
             struct ColumnProperties {
                 ColumnProperties(const QString &name = {}, int width = DEFAULT_WIDTH,
                                  int height = DEFAULT_HEIGHT)
                         : m_Name{name}, m_Width{width}, m_Height{height}
                 {
                 }
                 QString m_Name;
                 int m_Width;
                 int m_Height;
             };
             const auto COLUMN_PROPERTIES
                 = QHash<int, ColumnProperties>{{NAME_COLUMN, {QObject::tr("Name")}},
                                                {TSTART_COLUMN, {QObject::tr("tStart"), 180}},
                                                {TEND_COLUMN, {QObject::tr("tEnd"), 180}}};
             /// Format for datetimes
             const auto DATETIME_FORMAT = QStringLiteral("dd/MM/yyyy \nhh:mm:ss:zzz");
             } // namespace
             struct VariableModel::VariableModelPrivate {
                 /// Variables created in SciQlop
                 std::vector<std::shared_ptr<Variable> > m_Variables;
             };
             VariableModel::VariableModel(QObject *parent)
                     : QAbstractTableModel{parent}, impl{spimpl::make_unique_impl<VariableModelPrivate>()}
             {
             }
             std::shared_ptr<Variable>
             VariableModel::createVariable(const QString &name, const SqpDateTime &dateTime,
-                                          std::unique_ptr<IDataSeries> defaultDataSeries) noexcept
+                                          std::shared_ptr<IDataSeries> defaultDataSeries) noexcept
             {
                 auto insertIndex = rowCount();
                 beginInsertRows({}, insertIndex, insertIndex);
                 /// @todo For the moment, the other data of the variable is initialized with default values
                 auto variable = std::make_shared<Variable>(name, QStringLiteral("unit"),
                                                            QStringLiteral("mission"), dateTime);
                 variable->setDataSeries(std::move(defaultDataSeries));
                 impl->m_Variables.push_back(variable);
                 endInsertRows();
                 return variable;
             }
             std::shared_ptr<Variable> VariableModel::variable(int index) const
             {
                 return (index >= 0 && index < impl->m_Variables.size()) ? impl->m_Variables[index] : nullptr;
             }
             int VariableModel::columnCount(const QModelIndex &parent) const
             {
                 Q_UNUSED(parent);
                 return NB_COLUMNS;
             }
             int VariableModel::rowCount(const QModelIndex &parent) const
             {
                 Q_UNUSED(parent);
                 return impl->m_Variables.size();
             }
             QVariant VariableModel::data(const QModelIndex &index, int role) const
             {
                 if (!index.isValid()) {
                     return QVariant{};
                 }
                 if (index.row() < 0 || index.row() >= rowCount()) {
                     return QVariant{};
                 }
                 if (role == Qt::DisplayRole) {
                     if (auto variable = impl->m_Variables.at(index.row()).get()) {
                         /// Lambda function that builds the variant to return for a time value
                         auto dateTimeVariant = [](double time) {
                             auto dateTime = QDateTime::fromMSecsSinceEpoch(time * 1000.);
                             return dateTime.toString(DATETIME_FORMAT);
                         };
                         switch (index.column()) {
                             case NAME_COLUMN:
                                 return variable->name();
                             case TSTART_COLUMN:
                                 return dateTimeVariant(variable->dateTime().m_TStart);
                             case TEND_COLUMN:
                                 return dateTimeVariant(variable->dateTime().m_TEnd);
                             default:
                                 // No action
                                 break;
                         }
                         qWarning(LOG_VariableModel())
                             << tr("Can't get data (unknown column %1)").arg(index.column());
                     }
                     else {
                         qWarning(LOG_VariableModel()) << tr("Can't get data (no variable)");
                     }
                 }
                 return QVariant{};
             }
             QVariant VariableModel::headerData(int section, Qt::Orientation orientation, int role) const
             {
                 if (role != Qt::DisplayRole && role != Qt::SizeHintRole) {
                     return QVariant{};
                 }
                 if (orientation == Qt::Horizontal) {
                     auto propertiesIt = COLUMN_PROPERTIES.find(section);
                     if (propertiesIt != COLUMN_PROPERTIES.cend()) {
                         // Role is either DisplayRole or SizeHintRole
                         return (role == Qt::DisplayRole)
                                    ? QVariant{propertiesIt->m_Name}
                                    : QVariant{QSize{propertiesIt->m_Width, propertiesIt->m_Height}};
                     }
                     else {
                         qWarning(LOG_VariableModel())
                             << tr("Can't get header data (unknown column %1)").arg(section);
                     }
                 }
                 return QVariant{};
             }

gui/include/Visualization/VisualizationTabWidget.h +3 0

             #ifndef SCIQLOP_VISUALIZATIONTABWIDGET_H
             #define SCIQLOP_VISUALIZATIONTABWIDGET_H
             #include "Visualization/IVisualizationWidget.h"
             #include <Common/spimpl.h>
             #include <QLoggingCategory>
             #include <QWidget>
             Q_DECLARE_LOGGING_CATEGORY(LOG_VisualizationTabWidget)
             class Variable;
             class VisualizationZoneWidget;
             namespace Ui {
             class VisualizationTabWidget;
             } // namespace Ui
             class VisualizationTabWidget : public QWidget, public IVisualizationWidget {
                 Q_OBJECT
             public:
                 explicit VisualizationTabWidget(const QString &name = {}, QWidget *parent = 0);
                 virtual ~VisualizationTabWidget();
                 /// Add a zone widget
                 void addZone(VisualizationZoneWidget *zoneWidget);
                 /**
                  * Creates a zone using a variable. The variable will be displayed in a new graph of the new
                  * zone.
                  * @param variable the variable for which to create the zone
                  * @return the pointer to the created zone
                  */
                 VisualizationZoneWidget *createZone(std::shared_ptr<Variable> variable);
                 // IVisualizationWidget interface
                 void accept(IVisualizationWidgetVisitor *visitor) override;
                 bool canDrop(const Variable &variable) const override;
                 QString name() const override;
             private:
+                /// @return the layout of tab in which zones are added
+                QLayout &tabLayout() const noexcept;
                 Ui::VisualizationTabWidget *ui;
                 class VisualizationTabWidgetPrivate;
                 spimpl::unique_impl_ptr<VisualizationTabWidgetPrivate> impl;
             };
             #endif // SCIQLOP_VISUALIZATIONTABWIDGET_H

gui/src/SqpApplication.cpp 0 -2

             #include "SqpApplication.h"
             #include <Data/IDataProvider.h>
             #include <DataSource/DataSourceController.h>
             #include <QThread>
             #include <Time/TimeController.h>
             #include <Variable/Variable.h>
             #include <Variable/VariableController.h>
             #include <Visualization/VisualizationController.h>
             Q_LOGGING_CATEGORY(LOG_SqpApplication, "SqpApplication")
             class SqpApplication::SqpApplicationPrivate {
             public:
                 SqpApplicationPrivate()
                         : m_DataSourceController{std::make_unique<DataSourceController>()},
                           m_TimeController{std::make_unique<TimeController>()},
                           m_VariableController{std::make_unique<VariableController>()},
                           m_VisualizationController{std::make_unique<VisualizationController>()}
                 {
                     // /////////////////////////////// //
                     // Connections between controllers //
                     // /////////////////////////////// //
                     // VariableController <-> DataSourceController
-                    qRegisterMetaType<std::shared_ptr<IDataProvider> >();
                     connect(m_DataSourceController.get(),
                             SIGNAL(variableCreationRequested(const QString &, std::shared_ptr<IDataProvider>)),
                             m_VariableController.get(),
                             SLOT(createVariable(const QString &, std::shared_ptr<IDataProvider>)));
                     // VariableController <-> VisualizationController
-                    qRegisterMetaType<std::shared_ptr<Variable> >();
                     connect(m_VariableController.get(), SIGNAL(variableCreated(std::shared_ptr<Variable>)),
                             m_VisualizationController.get(),
                             SIGNAL(variableCreated(std::shared_ptr<Variable>)));
                     m_DataSourceController->moveToThread(&m_DataSourceControllerThread);
                     m_VariableController->moveToThread(&m_VariableControllerThread);
                     m_VisualizationController->moveToThread(&m_VisualizationControllerThread);
                     // Additionnal init
                     m_VariableController->setTimeController(m_TimeController.get());
                 }
                 virtual ~SqpApplicationPrivate()
                 {
                     qCInfo(LOG_SqpApplication()) << tr("SqpApplicationPrivate destruction");
                     m_DataSourceControllerThread.quit();
                     m_DataSourceControllerThread.wait();
                     m_VariableControllerThread.quit();
                     m_VariableControllerThread.wait();
                     m_VisualizationControllerThread.quit();
                     m_VisualizationControllerThread.wait();
                 }
                 std::unique_ptr<DataSourceController> m_DataSourceController;
                 std::unique_ptr<VariableController> m_VariableController;
                 std::unique_ptr<TimeController> m_TimeController;
                 std::unique_ptr<VisualizationController> m_VisualizationController;
                 QThread m_DataSourceControllerThread;
                 QThread m_VariableControllerThread;
                 QThread m_VisualizationControllerThread;
             };
             SqpApplication::SqpApplication(int &argc, char **argv)
                     : QApplication{argc, argv}, impl{spimpl::make_unique_impl<SqpApplicationPrivate>()}
             {
                 qCInfo(LOG_SqpApplication()) << tr("SqpApplication construction");
                 connect(&impl->m_DataSourceControllerThread, &QThread::started,
                         impl->m_DataSourceController.get(), &DataSourceController::initialize);
                 connect(&impl->m_DataSourceControllerThread, &QThread::finished,
                         impl->m_DataSourceController.get(), &DataSourceController::finalize);
                 connect(&impl->m_VariableControllerThread, &QThread::started, impl->m_VariableController.get(),
                         &VariableController::initialize);
                 connect(&impl->m_VariableControllerThread, &QThread::finished, impl->m_VariableController.get(),
                         &VariableController::finalize);
                 connect(&impl->m_VisualizationControllerThread, &QThread::started,
                         impl->m_VisualizationController.get(), &VisualizationController::initialize);
                 connect(&impl->m_VisualizationControllerThread, &QThread::finished,
                         impl->m_VisualizationController.get(), &VisualizationController::finalize);
                 impl->m_DataSourceControllerThread.start();
                 impl->m_VariableControllerThread.start();
                 impl->m_VisualizationControllerThread.start();
             }
             SqpApplication::~SqpApplication()
             {
             }
             void SqpApplication::initialize()
             {
             }
             DataSourceController &SqpApplication::dataSourceController() noexcept
             {
                 return *impl->m_DataSourceController;
             }
             TimeController &SqpApplication::timeController() noexcept
             {
                 return *impl->m_TimeController;
             }
             VariableController &SqpApplication::variableController() noexcept
             {
                 return *impl->m_VariableController;
             }
             VisualizationController &SqpApplication::visualizationController() noexcept
             {
                 return *impl->m_VisualizationController;
             }

gui/src/Visualization/VisualizationTabWidget.cpp +10 -4

             #include "Visualization/VisualizationTabWidget.h"
             #include "Visualization/IVisualizationWidgetVisitor.h"
             #include "ui_VisualizationTabWidget.h"
             #include "Visualization/VisualizationZoneWidget.h"
             Q_LOGGING_CATEGORY(LOG_VisualizationTabWidget, "VisualizationTabWidget")
             namespace {
             /// Generates a default name for a new zone, according to the number of zones already displayed in
             /// the tab
             QString defaultZoneName(const QLayout &layout)
             {
                 auto count = 0;
                 for (auto i = 0; i < layout.count(); ++i) {
                     if (dynamic_cast<VisualizationZoneWidget *>(layout.itemAt(i)->widget())) {
                         count++;
                     }
                 }
                 return QObject::tr("Zone %1").arg(count + 1);
             }
             } // namespace
             struct VisualizationTabWidget::VisualizationTabWidgetPrivate {
                 explicit VisualizationTabWidgetPrivate(const QString &name) : m_Name{name} {}
                 QString m_Name;
             };
             VisualizationTabWidget::VisualizationTabWidget(const QString &name, QWidget *parent)
                     : QWidget{parent},
                       ui{new Ui::VisualizationTabWidget},
                       impl{spimpl::make_unique_impl<VisualizationTabWidgetPrivate>(name)}
             {
                 ui->setupUi(this);
                 // Widget is deleted when closed
                 setAttribute(Qt::WA_DeleteOnClose);
             }
             VisualizationTabWidget::~VisualizationTabWidget()
             {
                 delete ui;
             }
             void VisualizationTabWidget::addZone(VisualizationZoneWidget *zoneWidget)
             {
-                this->layout()->addWidget(zoneWidget);
+                tabLayout().addWidget(zoneWidget);
             }
             VisualizationZoneWidget *VisualizationTabWidget::createZone(std::shared_ptr<Variable> variable)
             {
-                auto zoneWidget = new VisualizationZoneWidget{defaultZoneName(*layout()), this};
+                auto zoneWidget = new VisualizationZoneWidget{defaultZoneName(tabLayout()), this};
                 this->addZone(zoneWidget);
                 // Creates a new graph into the zone
                 zoneWidget->createGraph(variable);
                 return zoneWidget;
             }
             void VisualizationTabWidget::accept(IVisualizationWidgetVisitor *visitor)
             {
                 if (visitor) {
                     visitor->visitEnter(this);
                     // Apply visitor to zone children
-                    for (auto i = 0; i < layout()->count(); ++i) {
+                    auto &layout = tabLayout();
-                        if (auto item = layout()->itemAt(i)) {
+                    for (auto i = 0; i < layout.count(); ++i) {
+                        if (auto item = layout.itemAt(i)) {
                             // Widgets different from zones are not visited (no action)
                             if (auto visualizationZoneWidget
                                 = dynamic_cast<VisualizationZoneWidget *>(item->widget())) {
                                 visualizationZoneWidget->accept(visitor);
                             }
                         }
                     }
                     visitor->visitLeave(this);
                 }
                 else {
                     qCCritical(LOG_VisualizationTabWidget()) << tr("Can't visit widget : the visitor is null");
                 }
             }
             bool VisualizationTabWidget::canDrop(const Variable &variable) const
             {
                 // A tab can always accomodate a variable
                 Q_UNUSED(variable);
                 return true;
             }
             QString VisualizationTabWidget::name() const
             {
                 return impl->m_Name;
             }
+            QLayout &VisualizationTabWidget::tabLayout() const noexcept
+            {
+                return *ui->scrollAreaWidgetContents->layout();
+            }

gui/src/Visualization/VisualizationZoneWidget.cpp +8 0

             #include "Visualization/VisualizationZoneWidget.h"
             #include "Visualization/IVisualizationWidgetVisitor.h"
             #include "ui_VisualizationZoneWidget.h"
             #include "Visualization/VisualizationGraphWidget.h"
             #include <SqpApplication.h>
             Q_LOGGING_CATEGORY(LOG_VisualizationZoneWidget, "VisualizationZoneWidget")
             namespace {
+            /// Minimum height for graph added in zones (in pixels)
+            const auto GRAPH_MINIMUM_HEIGHT = 300;
             /// Generates a default name for a new graph, according to the number of graphs already displayed in
             /// the zone
             QString defaultGraphName(const QLayout &layout)
             {
                 auto count = 0;
                 for (auto i = 0; i < layout.count(); ++i) {
                     if (dynamic_cast<VisualizationGraphWidget *>(layout.itemAt(i)->widget())) {
                         count++;
                     }
                 }
                 return QObject::tr("Graph %1").arg(count + 1);
             }
             } // namespace
             VisualizationZoneWidget::VisualizationZoneWidget(const QString &name, QWidget *parent)
                     : QWidget{parent}, ui{new Ui::VisualizationZoneWidget}
             {
                 ui->setupUi(this);
                 ui->zoneNameLabel->setText(name);
                 // 'Close' options : widget is deleted when closed
                 setAttribute(Qt::WA_DeleteOnClose);
                 connect(ui->closeButton, &QToolButton::clicked, this, &VisualizationZoneWidget::close);
                 ui->closeButton->setIcon(sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton));
             }
             VisualizationZoneWidget::~VisualizationZoneWidget()
             {
                 delete ui;
             }
             void VisualizationZoneWidget::addGraph(VisualizationGraphWidget *graphWidget)
             {
                 ui->visualizationZoneFrame->layout()->addWidget(graphWidget);
             }
             VisualizationGraphWidget *VisualizationZoneWidget::createGraph(std::shared_ptr<Variable> variable)
             {
                 auto graphWidget = new VisualizationGraphWidget{
                     defaultGraphName(*ui->visualizationZoneFrame->layout()), this};
+                // Set graph properties
+                graphWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::MinimumExpanding);
+                graphWidget->setMinimumHeight(GRAPH_MINIMUM_HEIGHT);
                 this->addGraph(graphWidget);
                 graphWidget->addVariable(variable);
                 return graphWidget;
             }
             void VisualizationZoneWidget::accept(IVisualizationWidgetVisitor *visitor)
             {
                 if (visitor) {
                     visitor->visitEnter(this);
                     // Apply visitor to graph children
                     auto layout = ui->visualizationZoneFrame->layout();
                     for (auto i = 0; i < layout->count(); ++i) {
                         if (auto item = layout->itemAt(i)) {
                             // Widgets different from graphs are not visited (no action)
                             if (auto visualizationGraphWidget
                                 = dynamic_cast<VisualizationGraphWidget *>(item->widget())) {
                                 visualizationGraphWidget->accept(visitor);
                             }
                         }
                     }
                     visitor->visitLeave(this);
                 }
                 else {
                     qCCritical(LOG_VisualizationZoneWidget()) << tr("Can't visit widget : the visitor is null");
                 }
             }
             bool VisualizationZoneWidget::canDrop(const Variable &variable) const
             {
                 // A tab can always accomodate a variable
                 Q_UNUSED(variable);
                 return true;
             }
             QString VisualizationZoneWidget::name() const
             {
                 return ui->zoneNameLabel->text();
             }

gui/src/Visualization/operations/GenerateVariableMenuOperation.cpp +16 0

             #include "Visualization/operations/GenerateVariableMenuOperation.h"
             #include "Visualization/operations/MenuBuilder.h"
             #include "Visualization/VisualizationGraphWidget.h"
             #include "Visualization/VisualizationTabWidget.h"
             #include "Visualization/VisualizationZoneWidget.h"
             #include <Variable/Variable.h>
             #include <QMenu>
             #include <QStack>
             Q_LOGGING_CATEGORY(LOG_GenerateVariableMenuOperation, "GenerateVariableMenuOperation")
             struct GenerateVariableMenuOperation::GenerateVariableMenuOperationPrivate {
                 explicit GenerateVariableMenuOperationPrivate(QMenu *menu, std::shared_ptr<Variable> variable)
                         : m_Variable{variable}, m_MenuBuilder{menu}
                 {
                 }
+                void visitRootEnter()
+                {
+                    // Creates the root menu
+                    m_MenuBuilder.addMenu(QObject::tr("Plot"));
+                }
+                void visitRootLeave()
+                {
+                    // Closes the root menu
+                    m_MenuBuilder.closeMenu();
+                }
                 void visitNodeEnter(const IVisualizationWidget &container)
                 {
                     // Opens a new menu associated to the node
                     m_MenuBuilder.addMenu(container.name());
                 }
                 template <typename ActionFun>
                 void visitNodeLeave(const IVisualizationWidget &container, const QString &actionName,
                                     ActionFun actionFunction)
                 {
                     if (m_Variable && container.canDrop(*m_Variable)) {
                         m_MenuBuilder.addSeparator();
                         m_MenuBuilder.addAction(actionName, actionFunction);
                     }
                     // Closes the menu associated to the node
                     m_MenuBuilder.closeMenu();
                 }
                 template <typename ActionFun>
                 void visitLeaf(const IVisualizationWidget &container, const QString &actionName,
                                ActionFun actionFunction)
                 {
                     if (m_Variable && container.canDrop(*m_Variable)) {
                         m_MenuBuilder.addAction(actionName, actionFunction);
                     }
                 }
                 std::shared_ptr<Variable> m_Variable;
                 MenuBuilder m_MenuBuilder;
             };
             GenerateVariableMenuOperation::GenerateVariableMenuOperation(QMenu *menu,
                                                                          std::shared_ptr<Variable> variable)
                     : impl{spimpl::make_unique_impl<GenerateVariableMenuOperationPrivate>(menu, variable)}
             {
             }
             void GenerateVariableMenuOperation::visitEnter(VisualizationWidget *widget)
             {
                 // VisualizationWidget is not intended to accommodate a variable
                 Q_UNUSED(widget)
+                impl->visitRootEnter();
             }
             void GenerateVariableMenuOperation::visitLeave(VisualizationWidget *widget)
             {
                 // VisualizationWidget is not intended to accommodate a variable
                 Q_UNUSED(widget)
+                impl->visitRootLeave();
             }
             void GenerateVariableMenuOperation::visitEnter(VisualizationTabWidget *tabWidget)
             {
                 if (tabWidget) {
                     impl->visitNodeEnter(*tabWidget);
                 }
                 else {
                     qCCritical(LOG_GenerateVariableMenuOperation(),
                                "Can't visit enter VisualizationTabWidget : the widget is null");
                 }
             }
             void GenerateVariableMenuOperation::visitLeave(VisualizationTabWidget *tabWidget)
             {
                 if (tabWidget) {
                     impl->visitNodeLeave(
                         *tabWidget, QObject::tr("Open in a new zone"),
                         [ var = impl->m_Variable, tabWidget ]() { tabWidget->createZone(var); });
                 }
                 else {
                     qCCritical(LOG_GenerateVariableMenuOperation(),
                                "Can't visit leave VisualizationTabWidget : the widget is null");
                 }
             }
             void GenerateVariableMenuOperation::visitEnter(VisualizationZoneWidget *zoneWidget)
             {
                 if (zoneWidget) {
                     impl->visitNodeEnter(*zoneWidget);
                 }
                 else {
                     qCCritical(LOG_GenerateVariableMenuOperation(),
                                "Can't visit enter VisualizationZoneWidget : the widget is null");
                 }
             }
             void GenerateVariableMenuOperation::visitLeave(VisualizationZoneWidget *zoneWidget)
             {
                 if (zoneWidget) {
                     impl->visitNodeLeave(
                         *zoneWidget, QObject::tr("Open in a new graph"),
                         [ var = impl->m_Variable, zoneWidget ]() { zoneWidget->createGraph(var); });
                 }
                 else {
                     qCCritical(LOG_GenerateVariableMenuOperation(),
                                "Can't visit leave VisualizationZoneWidget : the widget is null");
                 }
             }
             void GenerateVariableMenuOperation::visit(VisualizationGraphWidget *graphWidget)
             {
                 if (graphWidget) {
                     impl->visitLeaf(
                         *graphWidget, QObject::tr("Open in %1").arg(graphWidget->name()),
                         [ var = impl->m_Variable, graphWidget ]() { graphWidget->addVariable(var); });
                 }
                 else {
                     qCCritical(LOG_GenerateVariableMenuOperation(),
                                "Can't visit VisualizationGraphWidget : the widget is null");
                 }
             }

gui/ui/Visualization/VisualizationTabWidget.ui +41 -1

@@ -1,20 +1,60
1	<?xml version="1.0" encoding="UTF-8"?>	1	<?xml version="1.0" encoding="UTF-8"?>
2	<ui version="4.0">	2	<ui version="4.0">
3	<class>VisualizationTabWidget</class>	3	<class>VisualizationTabWidget</class>
4	<widget class="QWidget" name="VisualizationTabWidget">	4	<widget class="QWidget" name="VisualizationTabWidget">
5	<property name="geometry">	5	<property name="geometry">
6	<rect>	6	<rect>
7	<x>0</x>	7	<x>0</x>
8	<y>0</y>	8	<y>0</y>
9	<width>400</width>	9	<width>400</width>
10	<height>300</height>	10	<height>300</height>
11	</rect>	11	</rect>
12	</property>	12	</property>
13	<property name="windowTitle">	13	<property name="windowTitle">
14	<string>Form</string>	14	<string>Form</string>
15	</property>	15	</property>
16	<layout class="QVBoxLayout" name="verticalLayout"/>	16	<layout class="QVBoxLayout" name="verticalLayout">
		17	<property name="leftMargin">
		18	<number>0</number>
		19	</property>
		20	<property name="topMargin">
		21	<number>0</number>
		22	</property>
		23	<property name="rightMargin">
		24	<number>0</number>
		25	</property>
		26	<property name="bottomMargin">
		27	<number>0</number>
		28	</property>
		29	<item>
		30	<widget class="QScrollArea" name="scrollArea">
		31	<property name="styleSheet">
		32	<string notr="true">background-color: transparent;</string>
		33	</property>
		34	<property name="frameShape">
		35	<enum>QFrame::NoFrame</enum>
		36	</property>
		37	<property name="frameShadow">
		38	<enum>QFrame::Sunken</enum>
		39	</property>
		40	<property name="widgetResizable">
		41	<bool>true</bool>
		42	</property>
		43	<widget class="QWidget" name="scrollAreaWidgetContents">
		44	<property name="geometry">
		45	<rect>
		46	<x>0</x>
		47	<y>0</y>
		48	<width>400</width>
		49	<height>300</height>
		50	</rect>
		51	</property>
		52	<layout class="QVBoxLayout" name="verticalLayout_3"/>
		53	</widget>
		54	</widget>
		55	</item>
		56	</layout>
17	</widget>	57	</widget>
18	<resources/>	58	<resources/>
19	<connections/>	59	<connections/>
20	</ui>	60	</ui>

plugins/mockplugin/include/CosinusProvider.h +1 -1

             #ifndef SCIQLOP_COSINUSPROVIDER_H
             #define SCIQLOP_COSINUSPROVIDER_H
             #include <Data/IDataProvider.h>
             #include <QLoggingCategory>
             Q_DECLARE_LOGGING_CATEGORY(LOG_CosinusProvider)
             /**
              * @brief The CosinusProvider class is an example of how a data provider can generate data
              */
             class CosinusProvider : public IDataProvider {
             public:
                 /// @sa IDataProvider::retrieveData()
-                std::unique_ptr<IDataSeries>
+                std::shared_ptr<IDataSeries>
                 retrieveData(const DataProviderParameters &parameters) const override;
                 void requestDataLoading(const QVector<SqpDateTime> &dateTimeList) override;
             private:
                 std::shared_ptr<IDataSeries> retrieveDataSeries(const SqpDateTime &dateTime);
             };
             #endif // SCIQLOP_COSINUSPROVIDER_H

plugins/mockplugin/src/CosinusProvider.cpp +10 -37

             #include "CosinusProvider.h"
             #include <Data/DataProviderParameters.h>
             #include <Data/ScalarSeries.h>
             #include <cmath>
             #include <QDateTime>
             Q_LOGGING_CATEGORY(LOG_CosinusProvider, "CosinusProvider")
-            std::unique_ptr<IDataSeries>
+            std::shared_ptr<IDataSeries>
             CosinusProvider::retrieveData(const DataProviderParameters &parameters) const
             {
                 auto dateTime = parameters.m_Time;
-                // Gets the timerange from the parameters
-                auto start = dateTime.m_TStart;
-                auto end = dateTime.m_TEnd;
-                // We assure that timerange is valid
-                if (end < start) {
-                    std::swap(start, end);
-                // Generates scalar series containing cosinus values (one value per second)
-                auto scalarSeries
-                    = std::make_unique<ScalarSeries>(end - start, Unit{QStringLiteral("t"), true}, Unit{});
-                auto dataIndex = 0;
-                for (auto time = start; time < end; ++time, ++dataIndex) {
-                    scalarSeries->setData(dataIndex, time, std::cos(time));
-                return scalarSeries;
-            void CosinusProvider::requestDataLoading(const QVector<SqpDateTime> &dateTimeList)
-                // NOTE: Try to use multithread if possible
-                for (const auto &dateTime : dateTimeList) {
-                    auto scalarSeries = this->retrieveDataSeries(dateTime);
-                    emit dataProvided(scalarSeries, dateTime);
-            std::shared_ptr<IDataSeries> CosinusProvider::retrieveDataSeries(const SqpDateTime &dateTime)
                 auto dataIndex = 0;
                 // Gets the timerange from the parameters
                 double freq = 100.0;
                 double start = dateTime.m_TStart * freq; // 100 htz
                 double end = dateTime.m_TEnd * freq;     // 100 htz
                 // We assure that timerange is valid
                 if (end < start) {
                     std::swap(start, end);
                 }
                 // Generates scalar series containing cosinus values (one value per second)
                 auto scalarSeries
                     = std::make_shared<ScalarSeries>(end - start, Unit{QStringLiteral("t"), true}, Unit{});
                 for (auto time = start; time < end; ++time, ++dataIndex) {
                     const auto timeOnFreq = time / freq;
                     scalarSeries->setData(dataIndex, timeOnFreq, std::cos(timeOnFreq));
                 }
                 return scalarSeries;
             }
+            void CosinusProvider::requestDataLoading(const QVector<SqpDateTime> &dateTimeList)
+            {
+                // NOTE: Try to use multithread if possible
+                for (const auto &dateTime : dateTimeList) {
+                    auto scalarSeries = this->retrieveData(DataProviderParameters{dateTime});
+                    emit dataProvided(scalarSeries, dateTime);
+                }
+            }

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