GIT_REPOSITORIES/LPP/Users/mperrinel/SciQLop-fork Commit - r444:c857efd82181

Add synchronization that keep delta

perrinel -

r444:c857efd82181

parent child

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r444:c857efd82181

gui/include/Visualization/VisualizationGraphWidget.h +14 -2

             #ifndef SCIQLOP_VISUALIZATIONGRAPHWIDGET_H
             #define SCIQLOP_VISUALIZATIONGRAPHWIDGET_H
             #include "Visualization/IVisualizationWidget.h"
             #include <QLoggingCategory>
             #include <QWidget>
             #include <memory>
             #include <Common/spimpl.h>
             Q_DECLARE_LOGGING_CATEGORY(LOG_VisualizationGraphWidget)
             class QCPRange;
             class SqpDateTime;
             class Variable;
+            /**
+             * Possible types of zoom operation
+             */
+            enum class VisualizationGraphWidgetZoomType { ZoomOut, ZoomIn, PanRight, PanLeft, Unknown };
             namespace Ui {
             class VisualizationGraphWidget;
             } // namespace Ui
             class VisualizationGraphWidget : public QWidget, public IVisualizationWidget {
                 Q_OBJECT
             public:
                 explicit VisualizationGraphWidget(const QString &name = {}, QWidget *parent = 0);
                 virtual ~VisualizationGraphWidget();
+                void enableSynchronize(bool enable);
                 void addVariable(std::shared_ptr<Variable> variable);
                 void addVariableUsingGraph(std::shared_ptr<Variable> variable);
                 /// Removes a variable from the graph
                 void removeVariable(std::shared_ptr<Variable> variable) noexcept;
-                /// Rescale the X axe to range parameter
                 void setRange(std::shared_ptr<Variable> variable, const SqpDateTime &range);
+                SqpDateTime graphRange();
+                void setGraphRange(const SqpDateTime &range);
                 // IVisualizationWidget interface
                 void accept(IVisualizationWidgetVisitor *visitor) override;
                 bool canDrop(const Variable &variable) const override;
                 bool contains(const Variable &variable) const override;
                 QString name() const override;
             signals:
                 void requestDataLoading(std::shared_ptr<Variable> variable, const SqpDateTime &dateTime);
+                void synchronize(const SqpDateTime &dateTime, const SqpDateTime &oldDateTime,
+                                 VisualizationGraphWidgetZoomType zoomType);
             private:
                 Ui::VisualizationGraphWidget *ui;
                 class VisualizationGraphWidgetPrivate;
                 spimpl::unique_impl_ptr<VisualizationGraphWidgetPrivate> impl;
             private slots:
                 /// Slot called when right clicking on the graph (displays a menu)
                 void onGraphMenuRequested(const QPoint &pos) noexcept;
-                void onRangeChanged(const QCPRange &t1);
+                /// Rescale the X axe to range parameter
+                void onRangeChanged(const QCPRange &t1, const QCPRange &t2);
                 /// Slot called when a mouse wheel was made, to perform some processing before the zoom is done
                 void onMouseWheel(QWheelEvent *event) noexcept;
                 void onDataCacheVariableUpdated();
             };
             #endif // SCIQLOP_VISUALIZATIONGRAPHWIDGET_H

gui/src/Visualization/VisualizationGraphWidget.cpp +87 -32

             #include "Visualization/VisualizationGraphWidget.h"
             #include "Visualization/IVisualizationWidgetVisitor.h"
             #include "Visualization/VisualizationGraphHelper.h"
             #include "ui_VisualizationGraphWidget.h"
             #include <Data/ArrayData.h>
             #include <Data/IDataSeries.h>
             #include <SqpApplication.h>
             #include <Variable/Variable.h>
             #include <Variable/VariableController.h>
             #include <unordered_map>
             Q_LOGGING_CATEGORY(LOG_VisualizationGraphWidget, "VisualizationGraphWidget")
             namespace {
             /// Key pressed to enable zoom on horizontal axis
             const auto HORIZONTAL_ZOOM_MODIFIER = Qt::NoModifier;
             /// Key pressed to enable zoom on vertical axis
             const auto VERTICAL_ZOOM_MODIFIER = Qt::ControlModifier;
             } // namespace
             struct VisualizationGraphWidget::VisualizationGraphWidgetPrivate {
+                explicit VisualizationGraphWidgetPrivate() : m_DoSynchronize(true) {}
                 // 1 variable -> n qcpplot
                 std::multimap<std::shared_ptr<Variable>, QCPAbstractPlottable *> m_VariableToPlotMultiMap;
+                bool m_DoSynchronize;
             };
             VisualizationGraphWidget::VisualizationGraphWidget(const QString &name, QWidget *parent)
                     : QWidget{parent},
                       ui{new Ui::VisualizationGraphWidget},
                       impl{spimpl::make_unique_impl<VisualizationGraphWidgetPrivate>()}
             {
                 ui->setupUi(this);
                 ui->graphNameLabel->setText(name);
                 // 'Close' options : widget is deleted when closed
                 setAttribute(Qt::WA_DeleteOnClose);
                 connect(ui->closeButton, &QToolButton::clicked, this, &VisualizationGraphWidget::close);
                 ui->closeButton->setIcon(sqpApp->style()->standardIcon(QStyle::SP_TitleBarCloseButton));
                 // Set qcpplot properties :
                 // - Drag (on x-axis) and zoom are enabled
                 // - Mouse wheel on qcpplot is intercepted to determine the zoom orientation
                 ui->widget->setInteractions(QCP::iRangeDrag | QCP::iRangeZoom);
                 ui->widget->axisRect()->setRangeDrag(Qt::Horizontal);
                 connect(ui->widget, &QCustomPlot::mouseWheel, this, &VisualizationGraphWidget::onMouseWheel);
-                connect(ui->widget->xAxis,
+                connect(ui->widget->xAxis, static_cast<void (QCPAxis::*)(const QCPRange &, const QCPRange &)>(
-                        static_cast<void (QCPAxis::*)(const QCPRange &)>(&QCPAxis::rangeChanged), this,
+                                               &QCPAxis::rangeChanged),
-                        &VisualizationGraphWidget::onRangeChanged);
+                        this, &VisualizationGraphWidget::onRangeChanged);
                 // 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);
             }
             VisualizationGraphWidget::~VisualizationGraphWidget()
             {
                 delete ui;
             }
+            void VisualizationGraphWidget::enableSynchronize(bool enable)
+            {
+                impl->m_DoSynchronize = enable;
+            }
             void VisualizationGraphWidget::addVariable(std::shared_ptr<Variable> variable)
             {
                 // Uses delegate to create the qcpplot components according to the variable
                 auto createdPlottables = VisualizationGraphHelper::create(variable, *ui->widget);
                 for (auto createdPlottable : qAsConst(createdPlottables)) {
                     impl->m_VariableToPlotMultiMap.insert({variable, createdPlottable});
                 }
                 connect(variable.get(), SIGNAL(updated()), this, SLOT(onDataCacheVariableUpdated()));
             }
             void VisualizationGraphWidget::addVariableUsingGraph(std::shared_ptr<Variable> variable)
             {
                 // when adding a variable, we need to set its time range to the current graph range
                 auto grapheRange = ui->widget->xAxis->range();
                 auto dateTime = SqpDateTime{grapheRange.lower, grapheRange.upper};
                 variable->setDateTime(dateTime);
                 auto variableDateTimeWithTolerance = dateTime;
                 // add 10% tolerance for each side
                 auto tolerance = 0.1 * (dateTime.m_TEnd - dateTime.m_TStart);
                 variableDateTimeWithTolerance.m_TStart -= tolerance;
                 variableDateTimeWithTolerance.m_TEnd += tolerance;
                 // Uses delegate to create the qcpplot components according to the variable
                 auto createdPlottables = VisualizationGraphHelper::create(variable, *ui->widget);
                 for (auto createdPlottable : qAsConst(createdPlottables)) {
                     impl->m_VariableToPlotMultiMap.insert({variable, createdPlottable});
                 }
                 connect(variable.get(), SIGNAL(updated()), this, SLOT(onDataCacheVariableUpdated()));
                 // CHangement detected, we need to ask controller to request data loading
                 emit requestDataLoading(variable, variableDateTimeWithTolerance);
             }
             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 componentsIt = impl->m_VariableToPlotMultiMap.equal_range(variable);
                 for (auto it = componentsIt.first; it != componentsIt.second;) {
                     ui->widget->removePlottable(it->second);
                     it = impl->m_VariableToPlotMultiMap.erase(it);
                 }
                 // Updates graph
                 ui->widget->replot();
             }
             void VisualizationGraphWidget::setRange(std::shared_ptr<Variable> variable,
                                                     const SqpDateTime &range)
             {
                 //    auto componentsIt = impl->m_VariableToPlotMultiMap.equal_range(variable);
                 //    for (auto it = componentsIt.first; it != componentsIt.second;) {
                 //    }
                 ui->widget->xAxis->setRange(range.m_TStart, range.m_TEnd);
+                ui->widget->replot();
+            }
+            SqpDateTime VisualizationGraphWidget::graphRange()
+            {
+                auto grapheRange = ui->widget->xAxis->range();
+                return SqpDateTime{grapheRange.lower, grapheRange.upper};
+            }
+            void VisualizationGraphWidget::setGraphRange(const SqpDateTime &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 ui->graphNameLabel->text();
             }
             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(mapToGlobal(pos));
                 }
             }
-            void VisualizationGraphWidget::onRangeChanged(const QCPRange &t1)
+            void VisualizationGraphWidget::onRangeChanged(const QCPRange &t1, const QCPRange &t2)
             {
-                qCDebug(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::onRangeChanged")
+                qCInfo(LOG_VisualizationGraphWidget()) << tr("VisualizationGraphWidget::onRangeChanged")
-                                                        << QThread::currentThread()->objectName();
+                                                       << QThread::currentThread()->objectName();
+                auto dateTimeRange = SqpDateTime{t1.lower, t1.upper};
+                auto zoomType = VisualizationGraphWidgetZoomType::ZoomOut;
                 for (auto it = impl->m_VariableToPlotMultiMap.cbegin();
                      it != impl->m_VariableToPlotMultiMap.cend(); ++it) {
                     auto variable = it->first;
-                    auto dateTime = SqpDateTime{t1.lower, t1.upper};
+                    auto currentDateTime = dateTimeRange;
-                    auto dateTimeRange = dateTime;
                     auto toleranceFactor = 0.2;
-                    auto tolerance = toleranceFactor * (dateTime.m_TEnd - dateTime.m_TStart);
+                    auto tolerance = toleranceFactor * (currentDateTime.m_TEnd - currentDateTime.m_TStart);
-                    auto variableDateTimeWithTolerance = dateTime;
+                    auto variableDateTimeWithTolerance = currentDateTime;
                     variableDateTimeWithTolerance.m_TStart -= tolerance;
                     variableDateTimeWithTolerance.m_TEnd += tolerance;
-                    qCDebug(LOG_VisualizationGraphWidget()) << "v" << dateTime;
+                    qCDebug(LOG_VisualizationGraphWidget()) << "r" << currentDateTime;
-                    qCDebug(LOG_VisualizationGraphWidget()) << "vtol" << variableDateTimeWithTolerance;
+                    qCDebug(LOG_VisualizationGraphWidget()) << "t" << variableDateTimeWithTolerance;
+                    qCDebug(LOG_VisualizationGraphWidget()) << "v" << variable->dateTime();
                     // If new range with tol is upper than variable datetime parameters. we need to request new
                     // data
                     if (!variable->contains(variableDateTimeWithTolerance)) {
-                        auto variableDateTimeWithTolerance = dateTime;
+                        auto variableDateTimeWithTolerance = currentDateTime;
-                        if (!variable->isInside(dateTime)) {
+                        if (!variable->isInside(currentDateTime)) {
                             auto variableDateTime = variable->dateTime();
-                            if (variableDateTime.m_TStart < dateTime.m_TStart) {
+                            if (variable->contains(variableDateTimeWithTolerance)) {
-                                qCDebug(LOG_VisualizationGraphWidget()) << tr("TORM: Detection pan to right:");
+                                qCInfo(LOG_VisualizationGraphWidget())
+                                    << tr("TORM: Detection zoom in that need request:");
+                                // add 10% tolerance for each side
+                                tolerance
+                                    = toleranceFactor * (currentDateTime.m_TEnd - currentDateTime.m_TStart);
+                                variableDateTimeWithTolerance.m_TStart -= tolerance;
+                                variableDateTimeWithTolerance.m_TEnd += tolerance;
+                                zoomType = VisualizationGraphWidgetZoomType::ZoomIn;
+                            }
+                            else if (variableDateTime.m_TStart < currentDateTime.m_TStart) {
+                                qCInfo(LOG_VisualizationGraphWidget()) << tr("TORM: Detection pan to right:");
-                                auto diffEndToKeepDelta = dateTime.m_TEnd - variableDateTime.m_TEnd;
+                                auto diffEndToKeepDelta = currentDateTime.m_TEnd - variableDateTime.m_TEnd;
-                                dateTime.m_TStart = variableDateTime.m_TStart + diffEndToKeepDelta;
+                                currentDateTime.m_TStart = variableDateTime.m_TStart + diffEndToKeepDelta;
                                 // Tolerance have to be added to the right
                                 // add tolerance for right (end) side
-                                tolerance = toleranceFactor * (dateTime.m_TEnd - dateTime.m_TStart);
+                                tolerance
+                                    = toleranceFactor * (currentDateTime.m_TEnd - currentDateTime.m_TStart);
                                 variableDateTimeWithTolerance.m_TEnd += tolerance;
+                                zoomType = VisualizationGraphWidgetZoomType::PanRight;
                             }
-                            else if (variableDateTime.m_TEnd > dateTime.m_TEnd) {
+                            else if (variableDateTime.m_TEnd > currentDateTime.m_TEnd) {
-                                qCDebug(LOG_VisualizationGraphWidget()) << tr("TORM: Detection pan to left: ");
+                                qCInfo(LOG_VisualizationGraphWidget()) << tr("TORM: Detection pan to left: ");
-                                auto diffStartToKeepDelta = variableDateTime.m_TStart - dateTime.m_TStart;
+                                auto diffStartToKeepDelta
-                                dateTime.m_TEnd = variableDateTime.m_TEnd - diffStartToKeepDelta;
+                                    = variableDateTime.m_TStart - currentDateTime.m_TStart;
+                                currentDateTime.m_TEnd = variableDateTime.m_TEnd - diffStartToKeepDelta;
                                 // Tolerance have to be added to the left
                                 // add tolerance for left (start) side
-                                tolerance = toleranceFactor * (dateTime.m_TEnd - dateTime.m_TStart);
+                                tolerance
+                                    = toleranceFactor * (currentDateTime.m_TEnd - currentDateTime.m_TStart);
                                 variableDateTimeWithTolerance.m_TStart -= tolerance;
+                                zoomType = VisualizationGraphWidgetZoomType::PanLeft;
                             }
                             else {
-                                qCDebug(LOG_VisualizationGraphWidget())
+                                qCInfo(LOG_VisualizationGraphWidget())
                                     << tr("Detection anormal zoom detection: ");
+                                zoomType = VisualizationGraphWidgetZoomType::Unknown;
                             }
                         }
                         else {
-                            qCDebug(LOG_VisualizationGraphWidget()) << tr("Detection zoom out: ");
+                            qCInfo(LOG_VisualizationGraphWidget()) << tr("TORM: Detection zoom out: ");
                             // add 10% tolerance for each side
-                            tolerance = 0.2 * (dateTime.m_TEnd - dateTime.m_TStart);
+                            tolerance = toleranceFactor * (currentDateTime.m_TEnd - currentDateTime.m_TStart);
                             variableDateTimeWithTolerance.m_TStart -= tolerance;
                             variableDateTimeWithTolerance.m_TEnd += tolerance;
+                            zoomType = VisualizationGraphWidgetZoomType::ZoomOut;
                         }
                         if (!variable->contains(dateTimeRange)) {
-                            qCDebug(LOG_VisualizationGraphWidget())
+                            qCInfo(LOG_VisualizationGraphWidget())
-                                << "TORM: Modif on variable datetime detected" << dateTime;
+                                << "TORM: Modif on variable datetime detected" << currentDateTime;
-                            variable->setDateTime(dateTime);
+                            variable->setDateTime(currentDateTime);
                         }
-                        qCDebug(LOG_VisualizationGraphWidget()) << tr("Request data detection: ");
+                        qCInfo(LOG_VisualizationGraphWidget()) << tr("TORM: Request data detection: ");
                         // CHangement detected, we need to ask controller to request data loading
                         emit requestDataLoading(variable, variableDateTimeWithTolerance);
                     }
                     else {
-                        qCDebug(LOG_VisualizationGraphWidget()) << tr("Detection zoom in: ");
+                        qCInfo(LOG_VisualizationGraphWidget())
+                            << tr("TORM: Detection zoom in that doesn't need request: ");
+                        zoomType = VisualizationGraphWidgetZoomType::ZoomIn;
                     }
                 }
+                if (impl->m_DoSynchronize) {
+                    auto oldDateTime = SqpDateTime{t2.lower, t2.upper};
+                    qCDebug(LOG_VisualizationGraphWidget())
+                        << tr("TORM: VisualizationGraphWidget::Synchronize notify !!")
+                        << QThread::currentThread()->objectName();
+                    emit synchronize(dateTimeRange, oldDateTime, zoomType);
+                }
             }
             void VisualizationGraphWidget::onMouseWheel(QWheelEvent *event) noexcept
             {
                 auto zoomOrientations = QFlags<Qt::Orientation>{};
                 // Lambda that enables a zoom orientation if the key modifier related to this orientation
                 // has
                 // been pressed
                 auto enableOrientation
                     = [&zoomOrientations, event](const auto &orientation, const auto &modifier) {
                           auto orientationEnabled = event->modifiers().testFlag(modifier);
                           zoomOrientations.setFlag(orientation, orientationEnabled);
                       };
                 enableOrientation(Qt::Vertical, VERTICAL_ZOOM_MODIFIER);
                 enableOrientation(Qt::Horizontal, HORIZONTAL_ZOOM_MODIFIER);
                 ui->widget->axisRect()->setRangeZoom(zoomOrientations);
             }
             void VisualizationGraphWidget::onDataCacheVariableUpdated()
             {
                 // NOTE:
                 //    We don't want to call the method for each component of a variable unitarily, but for
                 //    all
                 //    its components at once (eg its three components in the case of a vector).
                 //    The unordered_multimap does not do this easily, so the question is whether to:
                 //    - use an ordered_multimap and the algos of std to group the values by key
                 //    - use a map (unique keys) and store as values directly the list of components
                 auto grapheRange = ui->widget->xAxis->range();
                 auto dateTime = SqpDateTime{grapheRange.lower, grapheRange.upper};
                 for (auto it = impl->m_VariableToPlotMultiMap.cbegin();
                      it != impl->m_VariableToPlotMultiMap.cend(); ++it) {
                     auto variable = it->first;
                     qCDebug(LOG_VisualizationGraphWidget())
                         << "TORM: VisualizationGraphWidget::onDataCacheVariableUpdated S"
                         << variable->dateTime();
                     qCDebug(LOG_VisualizationGraphWidget())
                         << "TORM: VisualizationGraphWidget::onDataCacheVariableUpdated E" << dateTime;
                     if (dateTime.contains(variable->dateTime()) || dateTime.intersect(variable->dateTime())) {
                         VisualizationGraphHelper::updateData(QVector<QCPAbstractPlottable *>{} << it->second,
                                                              variable->dataSeries(), variable->dateTime());
                     }
                 }
             }

gui/src/Visualization/VisualizationZoneWidget.cpp +70 -1

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

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		ok + noexcept
		ok

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages