HG_REPOSITORIES/LPP/SciQLOP_Repos/SciQLop Commit - r878:e439cb403ff9

Drop of variable, graph and zones on the time widget

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r878:e439cb403ff9

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r878:e439cb403ff9

core/include/DataSource/DataSourceController.h +5 -2

             #ifndef SCIQLOP_DATASOURCECONTROLLER_H
             #define SCIQLOP_DATASOURCECONTROLLER_H
             #include "CoreGlobal.h"
             #include <QLoggingCategory>
             #include <QObject>
             #include <QUuid>
             #include <Common/spimpl.h>
             Q_DECLARE_LOGGING_CATEGORY(LOG_DataSourceController)
             class DataSourceItem;
             class IDataProvider;
             /**
              * @brief The DataSourceController class aims to make the link between SciQlop and its plugins. This
              * is the intermediate class that SciQlop has to use in the way to connect a data source. Please
              * first use register method to initialize a plugin specified by its metadata name (JSON plugin
              * source) then others specifics method will be able to access it. You can load a data source driver
              * plugin then create a data source.
              */
             class SCIQLOP_CORE_EXPORT DataSourceController : public QObject {
                 Q_OBJECT
             public:
                 explicit DataSourceController(QObject *parent = 0);
                 virtual ~DataSourceController();
                 /**
                  * Registers a data source. The method delivers a unique id that can be used afterwards to
                  * access to the data source properties (structure, connection parameters, data provider, etc.)
                  * @param dataSourceName the name of the data source
                  * @return the unique id with which the data source has been registered
                  */
                 QUuid registerDataSource(const QString &dataSourceName) noexcept;
                 /**
                  * Sets the structure of a data source. The controller takes ownership of the structure.
                  * @param dataSourceUid the unique id with which the data source has been registered into the
                  * controller. If it is invalid, the method has no effect.
                  * @param dataSourceItem the structure of the data source. It must be not null to be registered
                  * @sa registerDataSource()
                  */
                 void setDataSourceItem(const QUuid &dataSourceUid,
                                        std::unique_ptr<DataSourceItem> dataSourceItem) noexcept;
                 /**
                  * Sets the data provider used to retrieve data from of a data source. The controller takes
                  * ownership of the provider.
                  * @param dataSourceUid the unique id with which the data source has been registered into the
                  * controller. If it is invalid, the method has no effect.
                  * @param dataProvider the provider of the data source
                  * @sa registerDataSource()
                  */
                 void setDataProvider(const QUuid &dataSourceUid,
                                      std::unique_ptr<IDataProvider> dataProvider) noexcept;
                 /**
                  * Loads an item (product) as a variable in SciQlop
                  * @param dataSourceUid the unique id of the data source containing the item. It is used to get
                  * the data provider associated to the data source, and pass it to for the variable creation
                  * @param productItem the item to load
                  */
                 void loadProductItem(const QUuid &dataSourceUid, const DataSourceItem &productItem) noexcept;
-                QByteArray mimeDataForProductsData(const QVariantList &productsData) const;
+                /// Returns the MIME data associated to a list of product meta data
-                QVariantList productsDataForMimeData(const QByteArray &mimeData) const;
+                static QByteArray mimeDataForProductsData(const QVariantList &productsData);
+                /// Returns the list of meta data contained in a MIME data
+                static QVariantList productsDataForMimeData(const QByteArray &mimeData);
             public slots:
                 /// Manage init/end of the controller
                 void initialize();
                 void finalize();
                 void requestVariable(const QVariantHash &productData);
             signals:
                 /// Signal emitted when a structure has been set for a data source
                 void dataSourceItemSet(DataSourceItem *dataSourceItem);
                 /**
                  * Signal emitted when a variable creation is asked for a product
                  * @param variableName the name of the variable
                  * @param variableMetadata the metadata of the variable
                  * @param variableProvider the provider that will be used to retrieve the data of the variable
                  * (can be null)
                  */
                 void variableCreationRequested(const QString &variableName,
                                                const QVariantHash &variableMetadata,
                                                std::shared_ptr<IDataProvider> variableProvider);
             private:
                 void waitForFinish();
                 class DataSourceControllerPrivate;
                 spimpl::unique_impl_ptr<DataSourceControllerPrivate> impl;
             };
             #endif // SCIQLOP_DATASOURCECONTROLLER_H

core/include/Time/TimeController.h +6 0

             #ifndef SCIQLOP_TIMECONTROLLER_H
             #define SCIQLOP_TIMECONTROLLER_H
             #include "CoreGlobal.h"
             #include <Data/SqpRange.h>
             #include <QLoggingCategory>
             #include <QObject>
             #include <Common/spimpl.h>
             Q_DECLARE_LOGGING_CATEGORY(LOG_TimeController)
             /**
              * @brief The TimeController class aims to handle the Time parameters notification in SciQlop.
              */
             class SCIQLOP_CORE_EXPORT TimeController : public QObject {
                 Q_OBJECT
             public:
                 explicit TimeController(QObject *parent = 0);
                 SqpRange dateTime() const noexcept;
+                /// Returns the MIME data associated to a time range
+                static QByteArray mimeDataForTimeRange(const SqpRange &timeRange);
+                /// Returns the time range contained in a MIME data
+                static SqpRange timeRangeForMimeData(const QByteArray &mimeData);
             signals:
                 /// Signal emitted to notify that time parameters has beed updated
                 void timeUpdated(SqpRange time);
             public slots:
                 /// Slot called when a new dateTime has been defined.
                 void onTimeToUpdate(SqpRange dateTime);
                 /// Slot called when the dateTime has to be notified. Call timeUpdated signal
                 void onTimeNotify();
             private:
                 class TimeControllerPrivate;
                 spimpl::unique_impl_ptr<TimeControllerPrivate> impl;
             };
             #endif // SCIQLOP_TIMECONTROLLER_H

core/include/Variable/VariableController.h +3 0

             #ifndef SCIQLOP_VARIABLECONTROLLER_H
             #define SCIQLOP_VARIABLECONTROLLER_H
             #include "CoreGlobal.h"
             #include <Data/AcquisitionDataPacket.h>
             #include <Data/SqpRange.h>
             #include <QLoggingCategory>
             #include <QObject>
             #include <QUuid>
             #include <Common/spimpl.h>
             class IDataProvider;
             class QItemSelectionModel;
             class TimeController;
             class Variable;
             class VariableModel;
             Q_DECLARE_LOGGING_CATEGORY(LOG_VariableController)
             /**
              * Possible types of zoom operation
              */
             enum class AcquisitionZoomType { ZoomOut, ZoomIn, PanRight, PanLeft, Unknown };
             /**
              * @brief The VariableController class aims to handle the variables in SciQlop.
              */
             class SCIQLOP_CORE_EXPORT VariableController : public QObject {
                 Q_OBJECT
             public:
                 explicit VariableController(QObject *parent = 0);
                 virtual ~VariableController();
                 VariableModel *variableModel() noexcept;
                 QItemSelectionModel *variableSelectionModel() noexcept;
                 void setTimeController(TimeController *timeController) noexcept;
                 /**
                  * Clones the variable passed in parameter and adds the duplicate to the controller
                  * @param variable the variable to duplicate
                  * @return the duplicate created, nullptr if the variable couldn't be created
                  */
                 std::shared_ptr<Variable> cloneVariable(std::shared_ptr<Variable> variable) noexcept;
                 /**
                  * Deletes from the controller the variable passed in parameter.
                  *
                  * Delete a variable includes:
                  * - the deletion of the various references to the variable in SciQlop
                  * - the deletion of the model variable
                  * - the deletion of the provider associated with the variable
                  * - removing the cache associated with the variable
                  *
                  * @param variable the variable to delete from the controller.
                  */
                 void deleteVariable(std::shared_ptr<Variable> variable) noexcept;
                 /**
                  * Deletes from the controller the variables passed in parameter.
                  * @param variables the variables to delete from the controller.
                  * @sa deleteVariable()
                  */
                 void deleteVariables(const QVector<std::shared_ptr<Variable> > &variables) noexcept;
+                /// Returns the MIME data associated to a list of variables
                 QByteArray mimeDataForVariables(const QList<std::shared_ptr<Variable> > &variables) const;
+                /// Returns the list of variables contained in a MIME data
                 QList<std::shared_ptr<Variable> > variablesForMimeData(const QByteArray &mimeData) const;
                 static AcquisitionZoomType getZoomType(const SqpRange &range, const SqpRange &oldRange);
             signals:
                 /// Signal emitted when a variable is about to be deleted from the controller
                 void variableAboutToBeDeleted(std::shared_ptr<Variable> variable);
                 /// Signal emitted when a data acquisition is requested on a range for a variable
                 void rangeChanged(std::shared_ptr<Variable> variable, const SqpRange &range);
                 /// Signal emitted when a sub range of the cacheRange of the variable can be displayed
                 void updateVarDisplaying(std::shared_ptr<Variable> variable, const SqpRange &range);
             public slots:
                 /// Request the data loading of the variable whithin range
                 void onRequestDataLoading(QVector<std::shared_ptr<Variable> > variables, const SqpRange &range,
                                           bool synchronise);
                 /**
                  * Creates a new variable and adds it to the model
                  * @param name the name of the new variable
                  * @param metadata the metadata of the new variable
                  * @param provider the data provider for the new variable
                  * @return the pointer to the new variable or nullptr if the creation failed
                  */
                 std::shared_ptr<Variable> createVariable(const QString &name, const QVariantHash &metadata,
                                                          std::shared_ptr<IDataProvider> provider) noexcept;
                 /// Update the temporal parameters of every selected variable to dateTime
                 void onDateTimeOnSelection(const SqpRange &dateTime);
                 void onDataProvided(QUuid vIdentifier, const SqpRange &rangeRequested,
                                     const SqpRange &cacheRangeRequested,
                                     QVector<AcquisitionDataPacket> dataAcquired);
                 void onVariableRetrieveDataInProgress(QUuid identifier, double progress);
                 /// Cancel the current request for the variable
                 void onAbortProgressRequested(std::shared_ptr<Variable> variable);
                 void onAbortAcquisitionRequested(QUuid vIdentifier);
                 // synchronization group methods
                 void onAddSynchronizationGroupId(QUuid synchronizationGroupId);
                 void onRemoveSynchronizationGroupId(QUuid synchronizationGroupId);
                 void onAddSynchronized(std::shared_ptr<Variable> variable, QUuid synchronizationGroupId);
                 /// Desynchronizes the variable of the group whose identifier is passed in parameter
                 /// @remarks the method does nothing if the variable is not part of the group
                 void desynchronize(std::shared_ptr<Variable> variable, QUuid synchronizationGroupId);
                 void initialize();
                 void finalize();
             private:
                 void waitForFinish();
                 class VariableControllerPrivate;
                 spimpl::unique_impl_ptr<VariableControllerPrivate> impl;
             };
             #endif // SCIQLOP_VARIABLECONTROLLER_H

core/src/DataSource/DataSourceController.cpp +2 -2

             #include "DataSource/DataSourceController.h"
             #include "DataSource/DataSourceItem.h"
             #include <Data/IDataProvider.h>
             #include <QMutex>
             #include <QThread>
             #include <QDataStream>
             #include <QDir>
             #include <QStandardPaths>
             Q_LOGGING_CATEGORY(LOG_DataSourceController, "DataSourceController")
             namespace {
             /**
              * Builds the metadata of the variable that will be generated from the loading of an item
              * @param dataSourceItem the data source item from which to generate the metadata
              * @return the metadata of the variable
              */
             QVariantHash variableMetadata(const DataSourceItem &dataSourceItem)
             {
                 // Variable metadata contains...
                 // ... all metadata of the item
                 auto result = dataSourceItem.data();
                 // ... and the name of the plugin, recovered from root item
                 result.insert(QStringLiteral("plugin"), dataSourceItem.rootItem().name());
                 return result;
             }
             } // namespace
             class DataSourceController::DataSourceControllerPrivate {
             public:
                 QMutex m_WorkingMutex;
                 /// Data sources registered
                 QHash<QUuid, QString> m_DataSources;
                 /// Data sources structures
                 std::map<QUuid, std::unique_ptr<DataSourceItem> > m_DataSourceItems;
                 /// Data providers registered
                 /// @remarks Data providers are stored as shared_ptr as they can be sent to a variable and
                 /// continue to live without necessarily the data source controller
                 std::map<QUuid, std::shared_ptr<IDataProvider> > m_DataProviders;
                 // Search for the first datasource item matching the specified data
                 DataSourceItem *findDataSourceItem(const QVariantHash &data)
                 {
                     DataSourceItem *sourceItem = nullptr;
                     for (const auto &item : m_DataSourceItems) {
                         sourceItem = item.second->findItem(data, true);
                         if (sourceItem) {
                             break;
                         }
                     }
                     return sourceItem;
                 }
             };
             DataSourceController::DataSourceController(QObject *parent)
                     : impl{spimpl::make_unique_impl<DataSourceControllerPrivate>()}
             {
                 qCDebug(LOG_DataSourceController()) << tr("DataSourceController construction")
                                                     << QThread::currentThread();
             }
             DataSourceController::~DataSourceController()
             {
                 qCDebug(LOG_DataSourceController()) << tr("DataSourceController destruction")
                                                     << QThread::currentThread();
                 this->waitForFinish();
             }
             QUuid DataSourceController::registerDataSource(const QString &dataSourceName) noexcept
             {
                 auto dataSourceUid = QUuid::createUuid();
                 impl->m_DataSources.insert(dataSourceUid, dataSourceName);
                 return dataSourceUid;
             }
             void DataSourceController::setDataSourceItem(
                 const QUuid &dataSourceUid, std::unique_ptr<DataSourceItem> dataSourceItem) noexcept
             {
                 if (!dataSourceItem) {
                     qCWarning(LOG_DataSourceController())
                         << tr("Data source item can't be registered (null item)");
                     return;
                 }
                 if (impl->m_DataSources.contains(dataSourceUid)) {
                     // The data provider is implicitly converted to a shared_ptr
                     impl->m_DataSourceItems.insert(std::make_pair(dataSourceUid, std::move(dataSourceItem)));
                     // Retrieves the data source item to emit the signal with it
                     auto it = impl->m_DataSourceItems.find(dataSourceUid);
                     if (it != impl->m_DataSourceItems.end()) {
                         emit dataSourceItemSet(it->second.get());
                     }
                 }
                 else {
                     qCWarning(LOG_DataSourceController()) << tr("Can't set data source item for uid %1 : no "
                                                                 "data source has been registered with the uid")
                                                                  .arg(dataSourceUid.toString());
                 }
             }
             void DataSourceController::setDataProvider(const QUuid &dataSourceUid,
                                                        std::unique_ptr<IDataProvider> dataProvider) noexcept
             {
                 if (impl->m_DataSources.contains(dataSourceUid)) {
                     impl->m_DataProviders.insert(std::make_pair(dataSourceUid, std::move(dataProvider)));
                 }
                 else {
                     qCWarning(LOG_DataSourceController()) << tr("Can't set data provider for uid %1 : no data "
                                                                 "source has been registered with the uid")
                                                                  .arg(dataSourceUid.toString());
                 }
             }
             void DataSourceController::loadProductItem(const QUuid &dataSourceUid,
                                                        const DataSourceItem &productItem) noexcept
             {
                 if (productItem.type() == DataSourceItemType::PRODUCT
                     || productItem.type() == DataSourceItemType::COMPONENT) {
                     /// Retrieves the data provider of the data source (if any)
                     auto it = impl->m_DataProviders.find(dataSourceUid);
                     auto dataProvider = (it != impl->m_DataProviders.end()) ? it->second : nullptr;
                     emit variableCreationRequested(productItem.name(), variableMetadata(productItem),
                                                    dataProvider);
                 }
                 else {
                     qCWarning(LOG_DataSourceController()) << tr("Can't load an item that is not a product");
                 }
             }
-            QByteArray DataSourceController::mimeDataForProductsData(const QVariantList &productsData) const
+            QByteArray DataSourceController::mimeDataForProductsData(const QVariantList &productsData)
             {
                 QByteArray encodedData;
                 QDataStream stream{&encodedData, QIODevice::WriteOnly};
                 stream << productsData;
                 return encodedData;
             }
-            QVariantList DataSourceController::productsDataForMimeData(const QByteArray &mimeData) const
+            QVariantList DataSourceController::productsDataForMimeData(const QByteArray &mimeData)
             {
                 QDataStream stream{mimeData};
                 QVariantList productList;
                 stream >> productList;
                 return productList;
             }
             void DataSourceController::initialize()
             {
                 qCDebug(LOG_DataSourceController()) << tr("DataSourceController init")
                                                     << QThread::currentThread();
                 impl->m_WorkingMutex.lock();
                 qCDebug(LOG_DataSourceController()) << tr("DataSourceController init END");
             }
             void DataSourceController::finalize()
             {
                 impl->m_WorkingMutex.unlock();
             }
             void DataSourceController::requestVariable(const QVariantHash &productData)
             {
                 auto sourceItem = impl->findDataSourceItem(productData);
                 if (sourceItem) {
                     auto sourceName = sourceItem->rootItem().name();
                     auto sourceId = impl->m_DataSources.key(sourceName);
                     loadProductItem(sourceId, *sourceItem);
                 }
                 else {
                     qCWarning(LOG_DataSourceController()) << tr("requestVariable, product data not found");
                 }
             }
             void DataSourceController::waitForFinish()
             {
                 QMutexLocker locker{&impl->m_WorkingMutex};
             }

core/src/Time/TimeController.cpp +22 0

             #include "Time/TimeController.h"
+            #include <QDataStream>
             Q_LOGGING_CATEGORY(LOG_TimeController, "TimeController")
             struct TimeController::TimeControllerPrivate {
                 SqpRange m_DateTime;
             };
             TimeController::TimeController(QObject *parent)
                     : QObject{parent}, impl{spimpl::make_unique_impl<TimeControllerPrivate>()}
             {
                 qCDebug(LOG_TimeController()) << tr("TimeController construction");
             }
             SqpRange TimeController::dateTime() const noexcept
             {
                 return impl->m_DateTime;
             }
+            QByteArray TimeController::mimeDataForTimeRange(const SqpRange &timeRange)
+            {
+                QByteArray encodedData;
+                QDataStream stream{&encodedData, QIODevice::WriteOnly};
+                stream << timeRange.m_TStart << timeRange.m_TEnd;
+                return encodedData;
+            }
+            SqpRange TimeController::timeRangeForMimeData(const QByteArray &mimeData)
+            {
+                QDataStream stream{mimeData};
+                SqpRange timeRange;
+                stream >> timeRange.m_TStart >> timeRange.m_TEnd;
+                return timeRange;
+            }
             void TimeController::onTimeToUpdate(SqpRange dateTime)
             {
                 impl->m_DateTime = dateTime;
             }
             void TimeController::onTimeNotify()
             {
                 emit timeUpdated(impl->m_DateTime);
             }

core/src/Variable/VariableModel.cpp +22 -7

             #include <Variable/Variable.h>
             #include <Variable/VariableController.h>
             #include <Variable/VariableModel.h>
             #include <Common/DateUtils.h>
             #include <Common/MimeTypesDef.h>
             #include <Common/StringUtils.h>
             #include <Data/IDataSeries.h>
-            #include <QDataStream>
+            #include <DataSource/DataSourceController.h>
+            #include <Time/TimeController.h>
             #include <QMimeData>
             #include <QSize>
             #include <unordered_map>
             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 NBPOINTS_COLUMN = 3;
             const auto UNIT_COLUMN = 4;
             const auto MISSION_COLUMN = 5;
             const auto PLUGIN_COLUMN = 6;
             const auto NB_COLUMNS = 7;
             // 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}}, {NBPOINTS_COLUMN, {QObject::tr("Nb points")}},
                 {UNIT_COLUMN, {QObject::tr("Unit")}},      {MISSION_COLUMN, {QObject::tr("Mission")}},
                 {PLUGIN_COLUMN, {QObject::tr("Plugin")}}};
             /// Format for datetimes
             const auto DATETIME_FORMAT = QStringLiteral("dd/MM/yyyy \nhh:mm:ss:zzz");
             QString uniqueName(const QString &defaultName,
                                const std::vector<std::shared_ptr<Variable> > &variables)
             {
                 auto forbiddenNames = std::vector<QString>(variables.size());
                 std::transform(variables.cbegin(), variables.cend(), forbiddenNames.begin(),
                                [](const auto &variable) { return variable->name(); });
                 auto uniqueName = StringUtils::uniqueName(defaultName, forbiddenNames);
                 Q_ASSERT(!uniqueName.isEmpty());
                 return uniqueName;
             }
             } // namespace
             struct VariableModel::VariableModelPrivate {
                 /// Variables created in SciQlop
                 std::vector<std::shared_ptr<Variable> > m_Variables;
                 std::unordered_map<std::shared_ptr<Variable>, double> m_VariableToProgress;
                 VariableController *m_VariableController;
                 /// Return the row index of the variable. -1 if it's not found
                 int indexOfVariable(Variable *variable) const noexcept;
             };
             VariableModel::VariableModel(VariableController *parent)
                     : QAbstractTableModel{parent}, impl{spimpl::make_unique_impl<VariableModelPrivate>()}
             {
                 impl->m_VariableController = parent;
             }
             void VariableModel::addVariable(std::shared_ptr<Variable> variable) noexcept
             {
                 auto insertIndex = rowCount();
                 beginInsertRows({}, insertIndex, insertIndex);
                 // Generates unique name for the variable
                 variable->setName(uniqueName(variable->name(), impl->m_Variables));
                 impl->m_Variables.push_back(variable);
                 connect(variable.get(), &Variable::updated, this, &VariableModel::onVariableUpdated);
                 endInsertRows();
             }
             bool VariableModel::containsVariable(std::shared_ptr<Variable> variable) const noexcept
             {
                 auto end = impl->m_Variables.cend();
                 return std::find(impl->m_Variables.cbegin(), end, variable) != end;
             }
             std::shared_ptr<Variable> VariableModel::createVariable(const QString &name,
                                                                     const QVariantHash &metadata) noexcept
             {
                 auto variable = std::make_shared<Variable>(name, metadata);
                 addVariable(variable);
                 return variable;
             }
             void VariableModel::deleteVariable(std::shared_ptr<Variable> variable) noexcept
             {
                 if (!variable) {
                     qCCritical(LOG_Variable()) << "Can't delete a null variable from the model";
                     return;
                 }
                 // Finds variable in the model
                 auto begin = impl->m_Variables.cbegin();
                 auto end = impl->m_Variables.cend();
                 auto it = std::find(begin, end, variable);
                 if (it != end) {
                     auto removeIndex = std::distance(begin, it);
                     // Deletes variable
                     beginRemoveRows({}, removeIndex, removeIndex);
                     impl->m_Variables.erase(it);
                     endRemoveRows();
                 }
                 else {
                     qCritical(LOG_VariableModel())
                         << tr("Can't delete variable %1 from the model: the variable is not in the model")
                                .arg(variable->name());
                 }
                 // Removes variable from progress map
                 impl->m_VariableToProgress.erase(variable);
             }
             std::shared_ptr<Variable> VariableModel::variable(int index) const
             {
                 return (index >= 0 && index < impl->m_Variables.size()) ? impl->m_Variables[index] : nullptr;
             }
             std::vector<std::shared_ptr<Variable> > VariableModel::variables() const
             {
                 return impl->m_Variables;
             }
             void VariableModel::setDataProgress(std::shared_ptr<Variable> variable, double progress)
             {
                 if (progress > 0.0) {
                     impl->m_VariableToProgress[variable] = progress;
                 }
                 else {
                     impl->m_VariableToProgress.erase(variable);
                 }
                 auto modelIndex = createIndex(impl->indexOfVariable(variable.get()), NAME_COLUMN);
                 emit dataChanged(modelIndex, modelIndex);
             }
             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()) {
                         switch (index.column()) {
                             case NAME_COLUMN:
                                 return variable->name();
                             case TSTART_COLUMN: {
                                 auto range = variable->realRange();
                                 return range != INVALID_RANGE
                                            ? DateUtils::dateTime(range.m_TStart).toString(DATETIME_FORMAT)
                                            : QVariant{};
                             }
                             case TEND_COLUMN: {
                                 auto range = variable->realRange();
                                 return range != INVALID_RANGE
                                            ? DateUtils::dateTime(range.m_TEnd).toString(DATETIME_FORMAT)
                                            : QVariant{};
                             }
                             case NBPOINTS_COLUMN:
                                 return variable->nbPoints();
                             case UNIT_COLUMN:
                                 return variable->metadata().value(QStringLiteral("units"));
                             case MISSION_COLUMN:
                                 return variable->metadata().value(QStringLiteral("mission"));
                             case PLUGIN_COLUMN:
                                 return variable->metadata().value(QStringLiteral("plugin"));
                             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)");
                     }
                 }
                 else if (role == VariableRoles::ProgressRole) {
                     if (auto variable = impl->m_Variables.at(index.row())) {
                         auto it = impl->m_VariableToProgress.find(variable);
                         if (it != impl->m_VariableToProgress.cend()) {
                             return it->second;
                         }
                     }
                 }
                 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{};
             }
             Qt::ItemFlags VariableModel::flags(const QModelIndex &index) const
             {
                 return QAbstractTableModel::flags(index) | Qt::ItemIsDragEnabled | Qt::ItemIsDropEnabled;
             }
             Qt::DropActions VariableModel::supportedDropActions() const
             {
                 return Qt::CopyAction | Qt::MoveAction;
             }
             Qt::DropActions VariableModel::supportedDragActions() const
             {
                 return Qt::CopyAction | Qt::MoveAction;
             }
             QStringList VariableModel::mimeTypes() const
             {
-                return {MIME_TYPE_VARIABLE_LIST};
+                return {MIME_TYPE_VARIABLE_LIST, MIME_TYPE_TIME_RANGE};
             }
             QMimeData *VariableModel::mimeData(const QModelIndexList &indexes) const
             {
                 auto mimeData = new QMimeData;
                 QList<std::shared_ptr<Variable> > variableList;
+                SqpRange firstTimeRange;
                 for (const auto &index : indexes) {
                     if (index.column() == 0) { // only the first column
                         auto variable = impl->m_Variables.at(index.row());
                         if (variable.get() && index.isValid()) {
+                            if (variableList.isEmpty()) {
+                                // Gets the range of the first variable
+                                firstTimeRange = std::move(variable->range());
+                            }
                             variableList << variable;
                         }
                     }
                 }
-                auto encodedData = impl->m_VariableController->mimeDataForVariables(variableList);
+                auto variablesEncodedData = impl->m_VariableController->mimeDataForVariables(variableList);
-                mimeData->setData(MIME_TYPE_VARIABLE_LIST, encodedData);
+                mimeData->setData(MIME_TYPE_VARIABLE_LIST, variablesEncodedData);
+                if (variableList.count() == 1) {
+                    // No time range MIME data if multiple variables are dragged
+                    auto timeEncodedData = TimeController::mimeDataForTimeRange(firstTimeRange);
+                    mimeData->setData(MIME_TYPE_TIME_RANGE, timeEncodedData);
+                }
                 return mimeData;
             }
             bool VariableModel::canDropMimeData(const QMimeData *data, Qt::DropAction action, int row,
                                                 int column, const QModelIndex &parent) const
             {
                 // drop of a product
                 return data->hasFormat(MIME_TYPE_PRODUCT_LIST);
             }
             bool VariableModel::dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column,
                                              const QModelIndex &parent)
             {
                 auto dropDone = false;
                 if (data->hasFormat(MIME_TYPE_PRODUCT_LIST)) {
-                    QDataStream stream(data->data(MIME_TYPE_PRODUCT_LIST));
-                    QVariantList productList;
+                    auto productList
-                    stream >> productList;
+                        = DataSourceController::productsDataForMimeData(data->data(MIME_TYPE_PRODUCT_LIST));
                     for (auto metaData : productList) {
                         emit requestVariable(metaData.toHash());
                     }
                     dropDone = true;
                 }
                 return dropDone;
             }
             void VariableModel::abortProgress(const QModelIndex &index)
             {
                 if (auto variable = impl->m_Variables.at(index.row())) {
                     emit abortProgessRequested(variable);
                 }
             }
             void VariableModel::onVariableUpdated() noexcept
             {
                 // Finds variable that has been updated in the model
                 if (auto updatedVariable = dynamic_cast<Variable *>(sender())) {
                     auto updatedVariableIndex = impl->indexOfVariable(updatedVariable);
                     if (updatedVariableIndex > -1) {
                         emit dataChanged(createIndex(updatedVariableIndex, 0),
                                          createIndex(updatedVariableIndex, columnCount() - 1));
                     }
                 }
             }
             int VariableModel::VariableModelPrivate::indexOfVariable(Variable *variable) const noexcept
             {
                 auto begin = std::cbegin(m_Variables);
                 auto end = std::cend(m_Variables);
                 auto it
                     = std::find_if(begin, end, [variable](const auto &var) { return var.get() == variable; });
                 if (it != end) {
                     // Gets the index of the variable in the model: we assume here that views have the same
                     // order as the model
                     return std::distance(begin, it);
                 }
                 else {
                     return -1;
                 }
             }

gui/include/TimeWidget/TimeWidget.h +7 0

             #ifndef SCIQLOP_TIMEWIDGET_H
             #define SCIQLOP_TIMEWIDGET_H
             #include <QWidget>
             #include <Data/SqpRange.h>
             namespace Ui {
             class TimeWidget;
             } // Ui
             class TimeWidget : public QWidget {
                 Q_OBJECT
             public:
                 explicit TimeWidget(QWidget *parent = 0);
                 virtual ~TimeWidget();
+                void setTimeRange(SqpRange time);
             signals:
                 /// Signal emitted when the time parameters has beed updated
                 void timeUpdated(SqpRange time);
             public slots:
                 /// slot called when time parameters update has ben requested
                 void onTimeUpdateRequested();
+            protected:
+                void dragEnterEvent(QDragEnterEvent *event) override;
+                void dragLeaveEvent(QDragLeaveEvent *event) override;
+                void dropEvent(QDropEvent *event) override;
             private:
                 Ui::TimeWidget *ui;
             };
             #endif // SCIQLOP_ SQPSIDEPANE_H

gui/src/TimeWidget/TimeWidget.cpp +46 0

             #include "TimeWidget/TimeWidget.h"
             #include "ui_TimeWidget.h"
             #include <Common/DateUtils.h>
+            #include <Common/MimeTypesDef.h>
             #include <SqpApplication.h>
             #include <Time/TimeController.h>
+            #include <QDragEnterEvent>
+            #include <QDropEvent>
+            #include <QMimeData>
             TimeWidget::TimeWidget(QWidget *parent) : QWidget{parent}, ui{new Ui::TimeWidget}
             {
                 ui->setupUi(this);
                 ui->applyToolButton->setIcon(sqpApp->style()->standardIcon(QStyle::SP_DialogApplyButton));
                 // Connection
                 connect(ui->startDateTimeEdit, &QDateTimeEdit::dateTimeChanged, this,
                         &TimeWidget::onTimeUpdateRequested);
                 connect(ui->endDateTimeEdit, &QDateTimeEdit::dateTimeChanged, this,
                         &TimeWidget::onTimeUpdateRequested);
                 connect(ui->applyToolButton, &QToolButton::clicked, &sqpApp->timeController(),
                         &TimeController::onTimeNotify);
                 // Initialisation
                 auto endDateTime = QDateTime::currentDateTimeUtc();
                 auto startDateTime = endDateTime.addSecs(-3600); // one hour before
                 ui->startDateTimeEdit->setDateTime(startDateTime);
                 ui->endDateTimeEdit->setDateTime(endDateTime);
                 auto dateTime = SqpRange{DateUtils::secondsSinceEpoch(startDateTime),
                                          DateUtils::secondsSinceEpoch(endDateTime)};
                 sqpApp->timeController().onTimeToUpdate(dateTime);
             }
             TimeWidget::~TimeWidget()
             {
                 delete ui;
             }
+            void TimeWidget::setTimeRange(SqpRange time)
+            {
+                auto startDateTime = DateUtils::dateTime(time.m_TStart);
+                auto endDateTime = DateUtils::dateTime(time.m_TEnd);
+                ui->startDateTimeEdit->setDateTime(startDateTime);
+                ui->endDateTimeEdit->setDateTime(endDateTime);
+            }
             void TimeWidget::onTimeUpdateRequested()
             {
                 auto dateTime = SqpRange{DateUtils::secondsSinceEpoch(ui->startDateTimeEdit->dateTime()),
                                          DateUtils::secondsSinceEpoch(ui->endDateTimeEdit->dateTime())};
                 emit timeUpdated(std::move(dateTime));
             }
+            void TimeWidget::dragEnterEvent(QDragEnterEvent *event)
+            {
+                if (event->mimeData()->hasFormat(MIME_TYPE_TIME_RANGE)) {
+                    event->acceptProposedAction();
+                    setStyleSheet("QDateTimeEdit{background-color: #BBD5EE; border:2px solid #2A7FD4}");
+                }
+                else {
+                    event->ignore();
+                }
+            }
+            void TimeWidget::dragLeaveEvent(QDragLeaveEvent *event)
+            {
+                setStyleSheet(QString());
+            }
+            void TimeWidget::dropEvent(QDropEvent *event)
+            {
+                if (event->mimeData()->hasFormat(MIME_TYPE_TIME_RANGE)) {
+                    auto mimeData = event->mimeData()->data(MIME_TYPE_TIME_RANGE);
+                    auto timeRange = TimeController::timeRangeForMimeData(mimeData);
+                    setTimeRange(timeRange);
+                }
+                else {
+                    event->ignore();
+                }
+                setStyleSheet(QString());
+            }

gui/src/Visualization/VisualizationGraphWidget.cpp +4 0

             #include "Visualization/VisualizationGraphWidget.h"
             #include "Visualization/IVisualizationWidgetVisitor.h"
             #include "Visualization/VisualizationDefs.h"
             #include "Visualization/VisualizationGraphHelper.h"
             #include "Visualization/VisualizationGraphRenderingDelegate.h"
             #include "Visualization/VisualizationZoneWidget.h"
             #include "ui_VisualizationGraphWidget.h"
             #include <Common/MimeTypesDef.h>
             #include <Data/ArrayData.h>
             #include <Data/IDataSeries.h>
             #include <DragDropHelper.h>
             #include <Settings/SqpSettingsDefs.h>
             #include <SqpApplication.h>
+            #include <Time/TimeController.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 {
                 explicit VisualizationGraphWidgetPrivate(const QString &name)
                         : m_Name{name},
                           m_DoAcquisition{true},
                           m_IsCalibration{false},
                           m_RenderingDelegate{nullptr}
                 {
                 }
                 QString m_Name;
                 // 1 variable -> n qcpplot
                 std::map<std::shared_ptr<Variable>, PlottablesMap> m_VariableToPlotMultiMap;
                 bool m_DoAcquisition;
                 bool m_IsCalibration;
                 QCPItemTracer *m_TextTracer;
                 /// Delegate used to attach rendering features to the plot
                 std::unique_ptr<VisualizationGraphRenderingDelegate> m_RenderingDelegate;
             };
             VisualizationGraphWidget::VisualizationGraphWidget(const QString &name, QWidget *parent)
                     : VisualizationDragWidget{parent},
                       ui{new Ui::VisualizationGraphWidget},
                       impl{spimpl::make_unique_impl<VisualizationGraphWidgetPrivate>(name)}
             {
                 ui->setupUi(this);
                 // 'Close' options : widget is deleted when closed
                 setAttribute(Qt::WA_DeleteOnClose);
                 // 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 | QCP::iSelectItems);
                 ui->widget->axisRect()->setRangeDrag(Qt::Horizontal);
                 // The delegate must be initialized after the ui as it uses the plot
                 impl->m_RenderingDelegate = std::make_unique<VisualizationGraphRenderingDelegate>(*this);
                 connect(ui->widget, &QCustomPlot::mousePress, this, &VisualizationGraphWidget::onMousePress);
                 connect(ui->widget, &QCustomPlot::mouseRelease, this,
                         &VisualizationGraphWidget::onMouseRelease);
                 connect(ui->widget, &QCustomPlot::mouseMove, this, &VisualizationGraphWidget::onMouseMove);
                 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, Qt::DirectConnection);
                 // Activates menu when right clicking on the graph
                 ui->widget->setContextMenuPolicy(Qt::CustomContextMenu);
                 connect(ui->widget, &QCustomPlot::customContextMenuRequested, this,
                         &VisualizationGraphWidget::onGraphMenuRequested);
                 connect(this, &VisualizationGraphWidget::requestDataLoading, &sqpApp->variableController(),
                         &VariableController::onRequestDataLoading);
                 connect(&sqpApp->variableController(), &VariableController::updateVarDisplaying, this,
                         &VisualizationGraphWidget::onUpdateVarDisplaying);
             }
             VisualizationGraphWidget::~VisualizationGraphWidget()
             {
                 delete ui;
             }
             VisualizationZoneWidget *VisualizationGraphWidget::parentZoneWidget() const noexcept
             {
                 auto parent = parentWidget();
                 while (parent != nullptr && !qobject_cast<VisualizationZoneWidget *>(parent)) {
                     parent = parent->parentWidget();
                 }
                 return qobject_cast<VisualizationZoneWidget *>(parent);
             }
             void VisualizationGraphWidget::enableAcquisition(bool enable)
             {
                 impl->m_DoAcquisition = enable;
             }
             void VisualizationGraphWidget::addVariable(std::shared_ptr<Variable> variable, SqpRange range)
             {
                 // Uses delegate to create the qcpplot components according to the variable
                 auto createdPlottables = VisualizationGraphHelper::create(variable, *ui->widget);
                 impl->m_VariableToPlotMultiMap.insert({variable, std::move(createdPlottables)});
                 // Set axes properties according to the units of the data series
                 /// @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 xAxisUnit = Unit{};
                 auto valuesUnit = Unit{};
                 if (auto dataSeries = variable->dataSeries()) {
                     dataSeries->lockRead();
                     xAxisUnit = dataSeries->xAxisUnit();
                     valuesUnit = dataSeries->valuesUnit();
                     dataSeries->unlock();
                 }
                 impl->m_RenderingDelegate->setAxesProperties(xAxisUnit, valuesUnit);
                 connect(variable.get(), SIGNAL(updated()), this, SLOT(onDataCacheVariableUpdated()));
                 this->enableAcquisition(false);
                 this->setGraphRange(range);
                 this->enableAcquisition(true);
                 emit requestDataLoading(QVector<std::shared_ptr<Variable> >() << variable, range, false);
                 emit variableAdded(variable);
             }
             void VisualizationGraphWidget::removeVariable(std::shared_ptr<Variable> variable) noexcept
             {
                 // Each component associated to the variable :
                 // - is removed from qcpplot (which deletes it)
                 // - is no longer referenced in the map
                 auto variableIt = impl->m_VariableToPlotMultiMap.find(variable);
                 if (variableIt != impl->m_VariableToPlotMultiMap.cend()) {
                     emit variableAboutToBeRemoved(variable);
                     auto &plottablesMap = variableIt->second;
                     for (auto plottableIt = plottablesMap.cbegin(), plottableEnd = plottablesMap.cend();
                          plottableIt != plottableEnd;) {
                         ui->widget->removePlottable(plottableIt->second);
                         plottableIt = plottablesMap.erase(plottableIt);
                     }
                     impl->m_VariableToPlotMultiMap.erase(variableIt);
                 }
                 // Updates graph
                 ui->widget->replot();
             }
             QList<std::shared_ptr<Variable> > VisualizationGraphWidget::variables() const
             {
                 auto variables = QList<std::shared_ptr<Variable> >{};
                 for (auto it = std::cbegin(impl->m_VariableToPlotMultiMap);
                      it != std::cend(impl->m_VariableToPlotMultiMap); ++it) {
                     variables << it->first;
                 }
                 return variables;
             }
             void VisualizationGraphWidget::setYRange(const SqpRange &range)
             {
                 ui->widget->yAxis->setRange(range.m_TStart, range.m_TEnd);
             }
             SqpRange VisualizationGraphWidget::graphRange() const noexcept
             {
                 auto graphRange = ui->widget->xAxis->range();
                 return SqpRange{graphRange.lower, graphRange.upper};
             }
             void VisualizationGraphWidget::setGraphRange(const SqpRange &range)
             {
                 qCDebug(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::setGraphRange START");
                 ui->widget->xAxis->setRange(range.m_TStart, range.m_TEnd);
                 ui->widget->replot();
                 qCDebug(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::setGraphRange END");
             }
             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;
             }
             bool VisualizationGraphWidget::contains(const Variable &variable) const
             {
                 // Finds the variable among the keys of the map
                 auto variablePtr = &variable;
                 auto findVariable
                     = [variablePtr](const auto &entry) { return variablePtr == entry.first.get(); };
                 auto end = impl->m_VariableToPlotMultiMap.cend();
                 auto it = std::find_if(impl->m_VariableToPlotMultiMap.cbegin(), end, findVariable);
                 return it != end;
             }
             QString VisualizationGraphWidget::name() const
             {
                 return impl->m_Name;
             }
             QMimeData *VisualizationGraphWidget::mimeData() const
             {
                 auto mimeData = new QMimeData;
                 mimeData->setData(MIME_TYPE_GRAPH, QByteArray{});
+                auto timeRangeData = TimeController::mimeDataForTimeRange(graphRange());
+                mimeData->setData(MIME_TYPE_TIME_RANGE, timeRangeData);
                 return mimeData;
             }
             bool VisualizationGraphWidget::isDragAllowed() const
             {
                 return true;
             }
             void VisualizationGraphWidget::highlightForMerge(bool highlighted)
             {
                 if (highlighted) {
                     plot().setBackground(QBrush(QColor("#BBD5EE")));
                 }
                 else {
                     plot().setBackground(QBrush(Qt::white));
                 }
                 plot().update();
             }
             void VisualizationGraphWidget::closeEvent(QCloseEvent *event)
             {
                 Q_UNUSED(event);
                 // Prevents that all variables will be removed from graph when it will be closed
                 for (auto &variableEntry : impl->m_VariableToPlotMultiMap) {
                     emit variableAboutToBeRemoved(variableEntry.first);
                 }
             }
             void VisualizationGraphWidget::enterEvent(QEvent *event)
             {
                 Q_UNUSED(event);
                 impl->m_RenderingDelegate->showGraphOverlay(true);
             }
             void VisualizationGraphWidget::leaveEvent(QEvent *event)
             {
                 Q_UNUSED(event);
                 impl->m_RenderingDelegate->showGraphOverlay(false);
             }
             QCustomPlot &VisualizationGraphWidget::plot() noexcept
             {
                 return *ui->widget;
             }
             void VisualizationGraphWidget::onGraphMenuRequested(const QPoint &pos) noexcept
             {
                 QMenu graphMenu{};
                 // Iterates on variables (unique keys)
                 for (auto it = impl->m_VariableToPlotMultiMap.cbegin(),
                           end = impl->m_VariableToPlotMultiMap.cend();
                      it != end; it = impl->m_VariableToPlotMultiMap.upper_bound(it->first)) {
                     // 'Remove variable' action
                     graphMenu.addAction(tr("Remove variable %1").arg(it->first->name()),
                                         [ this, var = it->first ]() { removeVariable(var); });
                 }
                 if (!graphMenu.isEmpty()) {
                     graphMenu.exec(QCursor::pos());
                 }
             }
             void VisualizationGraphWidget::onRangeChanged(const QCPRange &t1, const QCPRange &t2)
             {
                 qCDebug(LOG_VisualizationGraphWidget()) << tr("TORM: VisualizationGraphWidget::onRangeChanged")
                                                         << QThread::currentThread()->objectName() << "DoAcqui"
                                                         << impl->m_DoAcquisition;
                 auto graphRange = SqpRange{t1.lower, t1.upper};
                 auto oldGraphRange = SqpRange{t2.lower, t2.upper};
                 if (impl->m_DoAcquisition) {
                     QVector<std::shared_ptr<Variable> > variableUnderGraphVector;
                     for (auto it = impl->m_VariableToPlotMultiMap.begin(),
                               end = impl->m_VariableToPlotMultiMap.end();
                          it != end; it = impl->m_VariableToPlotMultiMap.upper_bound(it->first)) {
                         variableUnderGraphVector.push_back(it->first);
                     }
                     emit requestDataLoading(std::move(variableUnderGraphVector), graphRange,
                                             !impl->m_IsCalibration);
                     if (!impl->m_IsCalibration) {
                         qCDebug(LOG_VisualizationGraphWidget())
                             << tr("TORM: VisualizationGraphWidget::Synchronize notify !!")
                             << QThread::currentThread()->objectName() << graphRange << oldGraphRange;
                         emit synchronize(graphRange, oldGraphRange);
                     }
                 }
             }
             void VisualizationGraphWidget::onMouseMove(QMouseEvent *event) noexcept
             {
                 // Handles plot rendering when mouse is moving
                 impl->m_RenderingDelegate->onMouseMove(event);
                 VisualizationDragWidget::mouseMoveEvent(event);
             }
             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::onMousePress(QMouseEvent *event) noexcept
             {
                 impl->m_IsCalibration = event->modifiers().testFlag(Qt::ControlModifier);
                 plot().setInteraction(QCP::iRangeDrag, !event->modifiers().testFlag(Qt::AltModifier));
                 VisualizationDragWidget::mousePressEvent(event);
             }
             void VisualizationGraphWidget::onMouseRelease(QMouseEvent *event) noexcept
             {
                 impl->m_IsCalibration = false;
             }
             void VisualizationGraphWidget::onDataCacheVariableUpdated()
             {
                 auto graphRange = ui->widget->xAxis->range();
                 auto dateTime = SqpRange{graphRange.lower, graphRange.upper};
                 for (auto &variableEntry : impl->m_VariableToPlotMultiMap) {
                     auto variable = variableEntry.first;
                     qCDebug(LOG_VisualizationGraphWidget())
                         << "TORM: VisualizationGraphWidget::onDataCacheVariableUpdated S" << variable->range();
                     qCDebug(LOG_VisualizationGraphWidget())
                         << "TORM: VisualizationGraphWidget::onDataCacheVariableUpdated E" << dateTime;
                     if (dateTime.contains(variable->range()) || dateTime.intersect(variable->range())) {
                         VisualizationGraphHelper::updateData(variableEntry.second, variable->dataSeries(),
                                                              variable->range());
                     }
                 }
             }
             void VisualizationGraphWidget::onUpdateVarDisplaying(std::shared_ptr<Variable> variable,
                                                                  const SqpRange &range)
             {
                 auto it = impl->m_VariableToPlotMultiMap.find(variable);
                 if (it != impl->m_VariableToPlotMultiMap.end()) {
                     VisualizationGraphHelper::updateData(it->second, variable->dataSeries(), range);
                 }
             }

gui/src/Visualization/VisualizationZoneWidget.cpp +23 -8

             #include "Visualization/VisualizationZoneWidget.h"
             #include "Visualization/IVisualizationWidgetVisitor.h"
             #include "Visualization/QCustomPlotSynchronizer.h"
             #include "Visualization/VisualizationGraphWidget.h"
             #include "Visualization/VisualizationWidget.h"
             #include "ui_VisualizationZoneWidget.h"
             #include "Common/MimeTypesDef.h"
             #include "Common/VisualizationDef.h"
             #include <Data/SqpRange.h>
+            #include <Time/TimeController.h>
             #include <Variable/Variable.h>
             #include <Variable/VariableController.h>
             #include <Visualization/operations/FindVariableOperation.h>
             #include <DragDropHelper.h>
             #include <QUuid>
             #include <SqpApplication.h>
             #include <cmath>
             #include <QLayout>
             Q_LOGGING_CATEGORY(LOG_VisualizationZoneWidget, "VisualizationZoneWidget")
             namespace {
             /// 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);
             }
             /**
              * Applies a function to all graphs of the zone represented by its layout
              * @param layout the layout that contains graphs
              * @param fun the function to apply to each graph
              */
             template <typename Fun>
             void processGraphs(QLayout &layout, Fun fun)
             {
                 for (auto i = 0; i < layout.count(); ++i) {
                     if (auto item = layout.itemAt(i)) {
                         if (auto visualizationGraphWidget
                             = dynamic_cast<VisualizationGraphWidget *>(item->widget())) {
                             fun(*visualizationGraphWidget);
                         }
                     }
                 }
             }
             } // namespace
             struct VisualizationZoneWidget::VisualizationZoneWidgetPrivate {
                 explicit VisualizationZoneWidgetPrivate()
                         : m_SynchronisationGroupId{QUuid::createUuid()},
                           m_Synchronizer{std::make_unique<QCustomPlotSynchronizer>()}
                 {
                 }
                 QUuid m_SynchronisationGroupId;
                 std::unique_ptr<IGraphSynchronizer> m_Synchronizer;
+                // Returns the first graph in the zone or nullptr if there is no graph inside
+                VisualizationGraphWidget *firstGraph(const VisualizationZoneWidget *zoneWidget) const
+                {
+                    VisualizationGraphWidget *firstGraph = nullptr;
+                    auto layout = zoneWidget->ui->dragDropContainer->layout();
+                    if (layout->count() > 0) {
+                        if (auto visualizationGraphWidget
+                            = qobject_cast<VisualizationGraphWidget *>(layout->itemAt(0)->widget())) {
+                            firstGraph = visualizationGraphWidget;
+                        }
+                    }
+                    return firstGraph;
+                }
                 void dropGraph(int index, VisualizationZoneWidget *zoneWidget);
                 void dropVariables(const QList<std::shared_ptr<Variable> > &variables, int index,
                                    VisualizationZoneWidget *zoneWidget);
             };
             VisualizationZoneWidget::VisualizationZoneWidget(const QString &name, QWidget *parent)
                     : VisualizationDragWidget{parent},
                       ui{new Ui::VisualizationZoneWidget},
                       impl{spimpl::make_unique_impl<VisualizationZoneWidgetPrivate>()}
             {
                 ui->setupUi(this);
                 ui->zoneNameLabel->setText(name);
                 ui->dragDropContainer->setAcceptedMimeTypes({MIME_TYPE_GRAPH, MIME_TYPE_VARIABLE_LIST});
                 ui->dragDropContainer->setMergeAllowedMimeTypes({MIME_TYPE_VARIABLE_LIST});
                 ui->dragDropContainer->setAcceptMimeDataFunction([this](auto mimeData) {
                     return sqpApp->dragDropHelper().checkMimeDataForVisualization(mimeData,
                                                                                   ui->dragDropContainer);
                 });
                 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredInContainer, this,
                         &VisualizationZoneWidget::dropMimeData);
                 connect(ui->dragDropContainer, &VisualizationDragDropContainer::dropOccuredOnWidget, this,
                         &VisualizationZoneWidget::dropMimeDataOnGraph);
                 // '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));
                 // Synchronisation id
                 QMetaObject::invokeMethod(&sqpApp->variableController(), "onAddSynchronizationGroupId",
                                           Qt::QueuedConnection, Q_ARG(QUuid, impl->m_SynchronisationGroupId));
             }
             VisualizationZoneWidget::~VisualizationZoneWidget()
             {
                 delete ui;
             }
             void VisualizationZoneWidget::addGraph(VisualizationGraphWidget *graphWidget)
             {
                 // Synchronize new graph with others in the zone
                 impl->m_Synchronizer->addGraph(*graphWidget);
                 ui->dragDropContainer->addDragWidget(graphWidget);
             }
             void VisualizationZoneWidget::insertGraph(int index, VisualizationGraphWidget *graphWidget)
             {
                 // Synchronize new graph with others in the zone
                 impl->m_Synchronizer->addGraph(*graphWidget);
                 ui->dragDropContainer->insertDragWidget(index, graphWidget);
             }
             VisualizationGraphWidget *VisualizationZoneWidget::createGraph(std::shared_ptr<Variable> variable)
             {
                 return createGraph(variable, -1);
             }
             VisualizationGraphWidget *VisualizationZoneWidget::createGraph(std::shared_ptr<Variable> variable,
                                                                            int index)
             {
                 auto graphWidget
                     = new VisualizationGraphWidget{defaultGraphName(*ui->dragDropContainer->layout()), this};
                 // Set graph properties
                 graphWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::MinimumExpanding);
                 graphWidget->setMinimumHeight(GRAPH_MINIMUM_HEIGHT);
                 // Lambda to synchronize zone widget
                 auto synchronizeZoneWidget = [this, graphWidget](const SqpRange &graphRange,
                                                                  const SqpRange &oldGraphRange) {
                     auto zoomType = VariableController::getZoomType(graphRange, oldGraphRange);
                     auto frameLayout = ui->dragDropContainer->layout();
                     for (auto i = 0; i < frameLayout->count(); ++i) {
                         auto graphChild
                             = dynamic_cast<VisualizationGraphWidget *>(frameLayout->itemAt(i)->widget());
                         if (graphChild && (graphChild != graphWidget)) {
                             auto graphChildRange = graphChild->graphRange();
                             switch (zoomType) {
                                 case AcquisitionZoomType::ZoomIn: {
                                     auto deltaLeft = graphRange.m_TStart - oldGraphRange.m_TStart;
                                     auto deltaRight = oldGraphRange.m_TEnd - graphRange.m_TEnd;
                                     graphChildRange.m_TStart += deltaLeft;
                                     graphChildRange.m_TEnd -= deltaRight;
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: ZoomIn");
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: deltaLeft")
                                                                            << deltaLeft;
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: deltaRight")
                                                                            << deltaRight;
                                     qCDebug(LOG_VisualizationZoneWidget())
                                         << tr("TORM: dt") << graphRange.m_TEnd - graphRange.m_TStart;
                                     break;
                                 }
                                 case AcquisitionZoomType::ZoomOut: {
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: ZoomOut");
                                     auto deltaLeft = oldGraphRange.m_TStart - graphRange.m_TStart;
                                     auto deltaRight = graphRange.m_TEnd - oldGraphRange.m_TEnd;
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: deltaLeft")
                                                                            << deltaLeft;
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: deltaRight")
                                                                            << deltaRight;
                                     qCDebug(LOG_VisualizationZoneWidget())
                                         << tr("TORM: dt") << graphRange.m_TEnd - graphRange.m_TStart;
                                     graphChildRange.m_TStart -= deltaLeft;
                                     graphChildRange.m_TEnd += deltaRight;
                                     break;
                                 }
                                 case AcquisitionZoomType::PanRight: {
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: PanRight");
                                     auto deltaLeft = graphRange.m_TStart - oldGraphRange.m_TStart;
                                     auto deltaRight = graphRange.m_TEnd - oldGraphRange.m_TEnd;
                                     graphChildRange.m_TStart += deltaLeft;
                                     graphChildRange.m_TEnd += deltaRight;
                                     qCDebug(LOG_VisualizationZoneWidget())
                                         << tr("TORM: dt") << graphRange.m_TEnd - graphRange.m_TStart;
                                     break;
                                 }
                                 case AcquisitionZoomType::PanLeft: {
                                     qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: PanLeft");
                                     auto deltaLeft = oldGraphRange.m_TStart - graphRange.m_TStart;
                                     auto deltaRight = oldGraphRange.m_TEnd - graphRange.m_TEnd;
                                     graphChildRange.m_TStart -= deltaLeft;
                                     graphChildRange.m_TEnd -= deltaRight;
                                     break;
                                 }
                                 case AcquisitionZoomType::Unknown: {
                                     qCDebug(LOG_VisualizationZoneWidget())
                                         << tr("Impossible to synchronize: zoom type unknown");
                                     break;
                                 }
                                 default:
                                     qCCritical(LOG_VisualizationZoneWidget())
                                         << tr("Impossible to synchronize: zoom type not take into account");
                                     // No action
                                     break;
                             }
                             graphChild->enableAcquisition(false);
                             qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: Range before: ")
                                                                    << graphChild->graphRange();
                             qCDebug(LOG_VisualizationZoneWidget()) << tr("TORM: Range after : ")
                                                                    << graphChildRange;
                             qCDebug(LOG_VisualizationZoneWidget())
                                 << tr("TORM: child dt") << graphChildRange.m_TEnd - graphChildRange.m_TStart;
                             graphChild->setGraphRange(graphChildRange);
                             graphChild->enableAcquisition(true);
                         }
                     }
                 };
                 // connection for synchronization
                 connect(graphWidget, &VisualizationGraphWidget::synchronize, synchronizeZoneWidget);
                 connect(graphWidget, &VisualizationGraphWidget::variableAdded, this,
                         &VisualizationZoneWidget::onVariableAdded);
                 connect(graphWidget, &VisualizationGraphWidget::variableAboutToBeRemoved, this,
                         &VisualizationZoneWidget::onVariableAboutToBeRemoved);
                 auto range = SqpRange{};
+                if (auto firstGraph = impl->firstGraph(this)) {
-                // Apply visitor to graph children
-                auto layout = ui->dragDropContainer->layout();
-                if (layout->count() > 0) {
                     // Case of a new graph in a existant zone
-                    if (auto visualizationGraphWidget
+                    range = firstGraph->graphRange();
-                        = dynamic_cast<VisualizationGraphWidget *>(layout->itemAt(0)->widget())) {
-                        range = visualizationGraphWidget->graphRange();
                 }
                 else {
                     // Case of a new graph as the first of the zone
                     range = variable->range();
                 }
                 this->insertGraph(index, graphWidget);
                 graphWidget->addVariable(variable, range);
                 // get y using variable range
                 if (auto dataSeries = variable->dataSeries()) {
                     dataSeries->lockRead();
                     auto valuesBounds
                         = dataSeries->valuesBounds(variable->range().m_TStart, variable->range().m_TEnd);
                     auto end = dataSeries->cend();
                     if (valuesBounds.first != end && valuesBounds.second != end) {
                         auto rangeValue = [](const auto &value) { return std::isnan(value) ? 0. : value; };
                         auto minValue = rangeValue(valuesBounds.first->minValue());
                         auto maxValue = rangeValue(valuesBounds.second->maxValue());
                         graphWidget->setYRange(SqpRange{minValue, maxValue});
                     }
                     dataSeries->unlock();
                 }
                 return graphWidget;
             }
             VisualizationGraphWidget *
             VisualizationZoneWidget::createGraph(const QList<std::shared_ptr<Variable> > variables, int index)
             {
                 if (variables.isEmpty()) {
                     return nullptr;
                 }
                 auto graphWidget = createGraph(variables.first(), index);
                 for (auto variableIt = variables.cbegin() + 1; variableIt != variables.cend(); ++variableIt) {
                     graphWidget->addVariable(*variableIt, graphWidget->graphRange());
                 }
                 return graphWidget;
             }
             void VisualizationZoneWidget::accept(IVisualizationWidgetVisitor *visitor)
             {
                 if (visitor) {
                     visitor->visitEnter(this);
                     // Apply visitor to graph children: widgets different from graphs are not visited (no
                     // action)
                     processGraphs(
                         *ui->dragDropContainer->layout(),
                         [visitor](VisualizationGraphWidget &graphWidget) { graphWidget.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;
             }
             bool VisualizationZoneWidget::contains(const Variable &variable) const
             {
                 Q_UNUSED(variable);
                 return false;
             }
             QString VisualizationZoneWidget::name() const
             {
                 return ui->zoneNameLabel->text();
             }
             QMimeData *VisualizationZoneWidget::mimeData() const
             {
                 auto mimeData = new QMimeData;
                 mimeData->setData(MIME_TYPE_ZONE, QByteArray{});
+                if (const auto firstGraph = impl->firstGraph(this)) {
+                    auto timeRangeData = TimeController::mimeDataForTimeRange(firstGraph->graphRange());
+                    mimeData->setData(MIME_TYPE_TIME_RANGE, timeRangeData);
+                }
                 return mimeData;
             }
             bool VisualizationZoneWidget::isDragAllowed() const
             {
                 return true;
             }
             void VisualizationZoneWidget::closeEvent(QCloseEvent *event)
             {
                 // Closes graphs in the zone
                 processGraphs(*ui->dragDropContainer->layout(),
                               [](VisualizationGraphWidget &graphWidget) { graphWidget.close(); });
                 // Delete synchronization group from variable controller
                 QMetaObject::invokeMethod(&sqpApp->variableController(), "onRemoveSynchronizationGroupId",
                                           Qt::QueuedConnection, Q_ARG(QUuid, impl->m_SynchronisationGroupId));
                 QWidget::closeEvent(event);
             }
             void VisualizationZoneWidget::onVariableAdded(std::shared_ptr<Variable> variable)
             {
                 QMetaObject::invokeMethod(&sqpApp->variableController(), "onAddSynchronized",
                                           Qt::QueuedConnection, Q_ARG(std::shared_ptr<Variable>, variable),
                                           Q_ARG(QUuid, impl->m_SynchronisationGroupId));
             }
             void VisualizationZoneWidget::onVariableAboutToBeRemoved(std::shared_ptr<Variable> variable)
             {
                 QMetaObject::invokeMethod(&sqpApp->variableController(), "desynchronize", Qt::QueuedConnection,
                                           Q_ARG(std::shared_ptr<Variable>, variable),
                                           Q_ARG(QUuid, impl->m_SynchronisationGroupId));
             }
             void VisualizationZoneWidget::dropMimeData(int index, const QMimeData *mimeData)
             {
                 if (mimeData->hasFormat(MIME_TYPE_GRAPH)) {
                     impl->dropGraph(index, this);
                 }
                 else if (mimeData->hasFormat(MIME_TYPE_VARIABLE_LIST)) {
                     auto variables = sqpApp->variableController().variablesForMimeData(
                         mimeData->data(MIME_TYPE_VARIABLE_LIST));
                     impl->dropVariables(variables, index, this);
                 }
                 else {
                     qCWarning(LOG_VisualizationZoneWidget())
                         << tr("VisualizationZoneWidget::dropMimeData, unknown MIME data received.");
                 }
             }
             void VisualizationZoneWidget::dropMimeDataOnGraph(VisualizationDragWidget *dragWidget,
                                                               const QMimeData *mimeData)
             {
                 auto graphWidget = qobject_cast<VisualizationGraphWidget *>(dragWidget);
                 if (!graphWidget) {
                     qCWarning(LOG_VisualizationZoneWidget())
                         << tr("VisualizationZoneWidget::dropMimeDataOnGraph, dropping in an unknown widget, "
                               "drop aborted");
                     Q_ASSERT(false);
                     return;
                 }
                 if (mimeData->hasFormat(MIME_TYPE_VARIABLE_LIST)) {
                     auto variables = sqpApp->variableController().variablesForMimeData(
                         mimeData->data(MIME_TYPE_VARIABLE_LIST));
                     for (const auto &var : variables) {
                         graphWidget->addVariable(var, graphWidget->graphRange());
                     }
                 }
                 else {
                     qCWarning(LOG_VisualizationZoneWidget())
                         << tr("VisualizationZoneWidget::dropMimeDataOnGraph, unknown MIME data received.");
                 }
             }
             void VisualizationZoneWidget::VisualizationZoneWidgetPrivate::dropGraph(
                 int index, VisualizationZoneWidget *zoneWidget)
             {
                 auto &helper = sqpApp->dragDropHelper();
                 auto graphWidget = qobject_cast<VisualizationGraphWidget *>(helper.getCurrentDragWidget());
                 if (!graphWidget) {
                     qCWarning(LOG_VisualizationZoneWidget())
                         << tr("VisualizationZoneWidget::dropGraph, drop aborted, the dropped graph is not "
                               "found or invalid.");
                     Q_ASSERT(false);
                     return;
                 }
                 auto parentDragDropContainer
                     = qobject_cast<VisualizationDragDropContainer *>(graphWidget->parentWidget());
                 if (!parentDragDropContainer) {
                     qCWarning(LOG_VisualizationZoneWidget())
                         << tr("VisualizationZoneWidget::dropGraph, drop aborted, the parent container of "
                               "the dropped graph is not found.");
                     Q_ASSERT(false);
                     return;
                 }
                 const auto &variables = graphWidget->variables();
                 if (parentDragDropContainer != zoneWidget->ui->dragDropContainer && !variables.isEmpty()) {
                     // The drop didn't occur in the same zone
                     // Abort the requests for the variables (if any)
                     // Commented, because it's not sure if it's needed or not
                     // for (const auto& var : variables)
                     //{
                     //    sqpApp->variableController().onAbortProgressRequested(var);
                     //}
                     auto previousParentZoneWidget = graphWidget->parentZoneWidget();
                     auto nbGraph = parentDragDropContainer->countDragWidget();
                     if (nbGraph == 1) {
                         // This is the only graph in the previous zone, close the zone
                         previousParentZoneWidget->close();
                     }
                     else {
                         // Close the graph
                         graphWidget->close();
                     }
                     // Creates the new graph in the zone
                     zoneWidget->createGraph(variables, index);
                 }
                 else {
                     // The drop occurred in the same zone or the graph is empty
                     // Simple move of the graph, no variable operation associated
                     parentDragDropContainer->layout()->removeWidget(graphWidget);
                     if (variables.isEmpty() && parentDragDropContainer != zoneWidget->ui->dragDropContainer) {
                         // The graph is empty and dropped in a different zone.
                         // Take the range of the first graph in the zone (if existing).
                         auto layout = zoneWidget->ui->dragDropContainer->layout();
                         if (layout->count() > 0) {
                             if (auto visualizationGraphWidget
                                 = qobject_cast<VisualizationGraphWidget *>(layout->itemAt(0)->widget())) {
                                 graphWidget->setGraphRange(visualizationGraphWidget->graphRange());
                             }
                         }
                     }
                     zoneWidget->ui->dragDropContainer->insertDragWidget(index, graphWidget);
                 }
             }
             void VisualizationZoneWidget::VisualizationZoneWidgetPrivate::dropVariables(
                 const QList<std::shared_ptr<Variable> > &variables, int index,
                 VisualizationZoneWidget *zoneWidget)
             {
                 // Note: the AcceptMimeDataFunction (set on the drop container) ensure there is a single and
                 // compatible variable here
                 if (variables.count() > 1) {
                     qCWarning(LOG_VisualizationZoneWidget())
                         << tr("VisualizationZoneWidget::dropVariables, dropping multiple variables, operation "
                               "aborted.");
                     return;
                 }
                 zoneWidget->createGraph(variables, index);
             }

gui/ui/TimeWidget/TimeWidget.ui +6 0

             <?xml version="1.0" encoding="UTF-8"?>
             <ui version="4.0">
              <class>TimeWidget</class>
              <widget class="QWidget" name="TimeWidget">
               <property name="geometry">
                <rect>
                 <x>0</x>
                 <y>0</y>
                 <width>716</width>
                 <height>48</height>
                </rect>
               </property>
               <property name="sizePolicy">
                <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
                 <horstretch>0</horstretch>
                 <verstretch>0</verstretch>
                </sizepolicy>
               </property>
+              <property name="acceptDrops">
+               <bool>true</bool>
+              </property>
               <property name="windowTitle">
                <string>Form</string>
               </property>
+              <property name="styleSheet">
+               <string notr="true">b</string>
+              </property>
               <layout class="QHBoxLayout" name="horizontalLayout_2">
                <item>
                 <widget class="QLabel" name="label">
                  <property name="sizePolicy">
                   <sizepolicy hsizetype="Minimum" vsizetype="Preferred">
                    <horstretch>0</horstretch>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
                  <property name="text">
                   <string>TStart :</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QDateTimeEdit" name="startDateTimeEdit">
                  <property name="sizePolicy">
                   <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
                    <horstretch>0</horstretch>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
                  <property name="displayFormat">
                   <string>dd/MM/yyyy HH:mm:ss:zzz</string>
                  </property>
                  <property name="calendarPopup">
                   <bool>true</bool>
                  </property>
                  <property name="timeSpec">
                   <enum>Qt::UTC</enum>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QLabel" name="label_2">
                  <property name="sizePolicy">
                   <sizepolicy hsizetype="Minimum" vsizetype="Preferred">
                    <horstretch>0</horstretch>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
                  <property name="text">
                   <string>TEnd :</string>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QDateTimeEdit" name="endDateTimeEdit">
                  <property name="sizePolicy">
                   <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
                    <horstretch>0</horstretch>
                    <verstretch>0</verstretch>
                   </sizepolicy>
                  </property>
                  <property name="displayFormat">
                   <string>dd/MM/yyyy HH:mm:ss:zzz</string>
                  </property>
                  <property name="calendarPopup">
                   <bool>true</bool>
                  </property>
                  <property name="timeSpec">
                   <enum>Qt::UTC</enum>
                  </property>
                 </widget>
                </item>
                <item>
                 <widget class="QToolButton" name="applyToolButton">
                  <property name="text">
                   <string>...</string>
                  </property>
                 </widget>
                </item>
               </layout>
              </widget>
              <resources/>
              <connections/>
             </ui>

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