Merge pull request #19132 from tritao/base-remove-boost-signals

Base: Remove Boost-based signals and switch to `FastSignals`.

src/Mod/Assembly/App/AssemblyObject.h

@@ -256,7 +256,7 @@ public:
     {
         return lastMalformedConstraints;
     }
-    boost::signals2::signal<void()> signalSolverUpdate;
+    fastsignals::signal<void()> signalSolverUpdate;
 
 private:
     std::shared_ptr<MbD::ASMTAssembly> mbdAssembly;

src/Mod/Assembly/Gui/ViewProviderAssembly.cpp

@@ -300,9 +300,9 @@ bool ViewProviderAssembly::setEdit(int mode)
         }
 
         auto* assembly = getObject<AssemblyObject>();
-        connectSolverUpdate = assembly->signalSolverUpdate.connect(
-            boost::bind(&ViewProviderAssembly::UpdateSolverInformation, this)
-        );
+        connectSolverUpdate = assembly->signalSolverUpdate.connect([this] {
+            UpdateSolverInformation();
+        });
 
         return true;
     }

src/Mod/Assembly/Gui/ViewProviderAssembly.h

@@ -25,7 +25,7 @@
 #define ASSEMBLYGUI_VIEWPROVIDER_ViewProviderAssembly_H
 
 #include <QCoreApplication>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Mod/Assembly/AssemblyGlobal.h>
 
@@ -247,7 +247,7 @@ public:
     SoFieldSensor* translationSensor = nullptr;
     SoFieldSensor* rotationSensor = nullptr;
 
-    boost::signals2::signal<
+    fastsignals::signal<
         void(const QString& state, const QString& msg, const QString& url, const QString& linkText)>
         signalSetUp;
 
@@ -284,8 +284,8 @@ private:
         std::set<App::DocumentObject*>& visited
     );
 
-    boost::signals2::connection connectSolverUpdate;
-    boost::signals2::scoped_connection m_preTransactionConn;
+    fastsignals::connection connectSolverUpdate;
+    fastsignals::scoped_connection m_preTransactionConn;
 };
 
 }  // namespace AssemblyGui

src/Mod/Fem/App/FemConstraint.h

@@ -231,7 +231,7 @@ private:
     double sizeFactor;
 
     void slotChangedObject(const App::DocumentObject& Obj, const App::Property& Prop);
-    boost::signals2::connection connDocChangedObject;
+    fastsignals::connection connDocChangedObject;
 };
 
 using ConstraintPython = App::FeaturePythonT<Constraint>;

src/Mod/Fem/Gui/TaskPostBoxes.h

@@ -204,7 +204,7 @@ private:
     QPixmap m_icon;
     App::DocumentObjectWeakPtrT m_object;
     Gui::ViewProviderWeakPtrT m_view;
-    boost::signals2::connection m_connection;
+    fastsignals::connection m_connection;
 };
 
 

src/Mod/Fem/Gui/ViewProviderFemPostFunction.h

@@ -25,7 +25,7 @@
 
 #include <Inventor/SbBox3f.h>
 #include <QWidget>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Gui/ViewProviderDocumentObjectGroup.h>
 #include <Mod/Fem/App/FemPostFunction.h>
@@ -90,7 +90,7 @@ private:
     bool m_block {false};
     ViewProviderFemPostFunction* m_view {nullptr};
     Fem::FemPostFunction* m_object {nullptr};
-    boost::signals2::scoped_connection m_connection;
+    fastsignals::scoped_connection m_connection;
 };
 
 class FemGuiExport ViewProviderFemPostFunctionProvider: public Gui::ViewProviderDocumentObjectGroup

src/Mod/Fem/Gui/ViewProviderFemPostObject.cpp

@@ -139,7 +139,7 @@ public:
 
 private:
     std::set<ViewProviderFemPostObject*> views;
-    using Connection = boost::signals2::scoped_connection;
+    using Connection = fastsignals::scoped_connection;
     Connection connectSelection;
 };
 

src/Mod/Material/Gui/DlgDisplayPropertiesImp.cpp

@@ -24,7 +24,7 @@
 
 #include <QSignalBlocker>
 #include <algorithm>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Base/Console.h>
 #include <Gui/Application.h>
@@ -50,7 +50,7 @@ namespace sp = std::placeholders;
 
 class DlgDisplayPropertiesImp::Private
 {
-    using DlgDisplayPropertiesImp_Connection = boost::signals2::connection;
+    using DlgDisplayPropertiesImp_Connection = fastsignals::connection;
 
 public:
     Ui::DlgDisplayProperties ui;

src/Mod/Material/Gui/DlgMaterialImp.cpp

@@ -26,7 +26,7 @@
 #include <QSignalBlocker>
 #include <QString>
 #include <algorithm>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Base/Console.h>
 #include <Gui/Application.h>
@@ -58,7 +58,7 @@ namespace sp = std::placeholders;
 
 class DlgMaterialImp::Private
 {
-    using DlgMaterialImp_Connection = boost::signals2::connection;
+    using DlgMaterialImp_Connection = fastsignals::connection;
 
 public:
     Ui::DlgMaterial ui;

src/Mod/Measure/App/MeasureBase.h

@@ -58,7 +58,7 @@ public:
 
     App::PropertyPlacement Placement;
 
-    // boost::signals2::signal<void (const MeasureBase*)> signalGuiInit;
+    // fastsignals::signal<void (const MeasureBase*)> signalGuiInit;
 
     // return PyObject as MeasureBasePy
     PyObject* getPyObject() override;

src/Mod/Measure/Gui/TaskMeasure.h

@@ -43,7 +43,7 @@
 #include <Gui/TaskView/TaskView.h>
 #include <Gui/Selection/Selection.h>
 
-#include <boost/signals2/connection.hpp>
+#include <fastsignals/connection.h>
 
 namespace MeasureGui
 {
@@ -90,7 +90,7 @@ private:
     QAction* newMeasurementBehaviourAction {nullptr};
     QToolButton* mSettings {nullptr};
 
-    boost::signals2::connection m_deletedConnection;
+    fastsignals::connection m_deletedConnection;
 
     void removeObject();
     void onModeChanged(int index);

src/Mod/Measure/Gui/ViewProviderMeasureBase.h

@@ -168,7 +168,7 @@ protected:
     SoSeparator* pLineSeparatorSecondary;
 
 private:
-    boost::signals2::connection _mVisibilityChangedConnection;
+    fastsignals::connection _mVisibilityChangedConnection;
 };
 
 

src/Mod/Mesh/Gui/MeshEditor.h

@@ -161,7 +161,7 @@ private Q_SLOTS:
 
 private:
     using TBoundary = std::vector<Mesh::PointIndex>;
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
 
     static void fileHoleCallback(void* ud, SoEventCallback* n);
     void createPolygons();

src/Mod/Part/App/OCAF/ImportExportSettings.h

@@ -25,6 +25,7 @@
 #ifndef PART_OCAF_IMPORTEXPORTSETTINGS_H
 #define PART_OCAF_IMPORTEXPORTSETTINGS_H
 
+#include <list>
 #include <memory>
 #include <Mod/Part/App/Interface.h>
 #include <Base/Parameter.h>

src/Mod/Part/App/PropertyTopoShape.h

@@ -310,7 +310,7 @@ private:
 
 private:
     std::unordered_map<std::string, TopoShape> cache;
-    boost::signals2::scoped_connection connChanged;
+    fastsignals::scoped_connection connChanged;
 };
 
 }  // namespace Part

src/Mod/Part/Gui/DlgBooleanOperation.h

@@ -39,7 +39,7 @@ class Property;
 namespace PartGui
 {
 
-using Connection = boost::signals2::connection;
+using Connection = fastsignals::connection;
 class Ui_DlgBooleanOperation;
 class DlgBooleanOperation: public QWidget
 {

src/Mod/Part/Gui/DlgFilletEdges.cpp

@@ -220,7 +220,7 @@ public:
     std::vector<int> edge_ids;
     TopTools_IndexedMapOfShape all_edges;
     TopTools_IndexedMapOfShape all_faces;
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectApplicationDeletedObject;
     Connection connectApplicationDeletedDocument;
 

src/Mod/Part/Gui/TaskAttacher.h

@@ -174,7 +174,7 @@ private:
     Attacher::SuggestResult lastSuggestResult;
     bool completed;
 
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectDelObject;
     Connection connectDelDocument;
 

src/Mod/Part/Gui/TaskFaceAppearances.cpp

@@ -95,7 +95,7 @@ public:
 class FaceAppearances::Private
 {
 public:
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Ui_TaskFaceAppearances* ui;
     QPointer<Gui::View3DInventorViewer> view;
     ViewProviderPartExt* vp;

src/Mod/PartDesign/App/Body.h

@@ -161,7 +161,7 @@ protected:
     void onDocumentRestored() override;
 
 private:
-    boost::signals2::scoped_connection connection;
+    fastsignals::scoped_connection connection;
     bool showTip = false;
 };
 

src/Mod/PartDesign/App/ShapeBinder.h

@@ -81,7 +81,7 @@ private:
     void slotChangedObject(const App::DocumentObject& Obj, const App::Property& Prop);
     void onSettingDocument() override;
 
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectDocumentChangedObject;
 };
 
@@ -168,7 +168,7 @@ protected:
 
     void slotRecomputedObject(const App::DocumentObject& Obj);
 
-    using Connection = boost::signals2::scoped_connection;
+    using Connection = fastsignals::scoped_connection;
     Connection connRecomputedObj;
     App::Document* contextDoc = nullptr;
 

src/Mod/PartDesign/Gui/TaskHoleParameters.h

@@ -144,7 +144,7 @@ private:
     void updateHoleTypeCombo();
 
 private:
-    using Connection = boost::signals2::scoped_connection;
+    using Connection = fastsignals::scoped_connection;
     Connection connectPropChanged;
 
     std::unique_ptr<Observer> observer;

src/Mod/PartDesign/Gui/TaskTransformedMessages.h

@@ -27,7 +27,7 @@
 #include <Gui/TaskView/TaskView.h>
 
 class Ui_TaskTransformedMessages;
-using Connection = boost::signals2::connection;
+using Connection = fastsignals::connection;
 
 namespace App
 {

src/Mod/PartDesign/Gui/ViewProviderTransformed.h

@@ -54,7 +54,7 @@ public:
     void setupContextMenu(QMenu*, QObject*, const char*) override;
 
     /// signals if the transformation contains errors
-    boost::signals2::signal<void(QString msg)> signalDiagnosis;
+    fastsignals::signal<void(QString msg)> signalDiagnosis;
 
     // Name of menu dialog
     QString menuName;

src/Mod/PartDesign/Gui/WorkflowManager.h

@@ -100,9 +100,9 @@ private:
 private:
     std::map<const App::Document*, Workflow> dwMap;
 
-    boost::signals2::connection connectNewDocument;
-    boost::signals2::connection connectFinishRestoreDocument;
-    boost::signals2::connection connectDeleteDocument;
+    fastsignals::connection connectNewDocument;
+    fastsignals::connection connectFinishRestoreDocument;
+    fastsignals::connection connectDeleteDocument;
 
     static WorkflowManager* _instance;
 };

src/Mod/Sketcher/App/PropertyConstraintList.h

@@ -29,7 +29,7 @@
 #include <vector>
 
 #include <boost/unordered/unordered_map.hpp>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <App/Property.h>
 #include <Mod/Part/App/Geometry.h>
@@ -152,9 +152,9 @@ public:
 
     using ConstraintInfo = std::pair<int, const Constraint*>;
 
-    boost::signals2::signal<void(const std::map<App::ObjectIdentifier, App::ObjectIdentifier>&)>
+    fastsignals::signal<void(const std::map<App::ObjectIdentifier, App::ObjectIdentifier>&)>
         signalConstraintsRenamed;
-    boost::signals2::signal<void(const std::set<App::ObjectIdentifier>&)> signalConstraintsRemoved;
+    fastsignals::signal<void(const std::set<App::ObjectIdentifier>&)> signalConstraintsRemoved;
 
     static std::string getConstraintName(const std::string& name, int i);
 

src/Mod/Sketcher/App/SketchObject.h

@@ -971,8 +971,8 @@ public:
     std::vector<Base::Vector3d> getOpenVertices() const;
 
     // Signaled when solver has done update
-    boost::signals2::signal<void()> signalSolverUpdate;
-    boost::signals2::signal<void()> signalElementsChanged;
+    fastsignals::signal<void()> signalSolverUpdate;
+    fastsignals::signal<void()> signalElementsChanged;
 
     Part::TopoShape buildInternals(const Part::TopoShape& edges) const;
 
@@ -1161,8 +1161,8 @@ private:
     std::vector<int> lastPartiallyRedundant;
     std::vector<int> lastMalformedConstraints;
 
-    boost::signals2::scoped_connection constraintsRenamedConn;
-    boost::signals2::scoped_connection constraintsRemovedConn;
+    fastsignals::scoped_connection constraintsRenamedConn;
+    fastsignals::scoped_connection constraintsRemovedConn;
 
     bool AutoLockTangencyAndPerpty(Constraint* cstr, bool bForce = false, bool bLock = true);
 

src/Mod/Sketcher/Gui/DrawSketchDefaultWidgetController.h

@@ -95,7 +95,7 @@ private:
 
     SketcherToolDefaultWidget* toolWidget;
 
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::advanced_connection;
 
     Connection connectionParameterTabOrEnterPressed;
     Connection connectionParameterValueChanged;
@@ -378,12 +378,12 @@ private:
     /// Resets the widget
     void resetDefaultWidget()
     {
-        boost::signals2::shared_connection_block parameter_focus_block(
+        fastsignals::shared_connection_block parameter_focus_block(
             connectionParameterTabOrEnterPressed
         );
-        boost::signals2::shared_connection_block parameter_block(connectionParameterValueChanged);
-        boost::signals2::shared_connection_block checkbox_block(connectionCheckboxCheckedChanged);
-        boost::signals2::shared_connection_block combobox_block(connectionComboboxSelectionChanged);
+        fastsignals::shared_connection_block parameter_block(connectionParameterValueChanged);
+        fastsignals::shared_connection_block checkbox_block(connectionCheckboxCheckedChanged);
+        fastsignals::shared_connection_block combobox_block(connectionComboboxSelectionChanged);
 
         nParameter = WidgetParametersT::size(handler->constructionMethod());
         nCheckbox = WidgetCheckboxesT::size(handler->constructionMethod());
@@ -403,9 +403,7 @@ private:
 
             if (currentindex != methodint) {
                 // avoid triggering of method change
-                boost::signals2::shared_connection_block combobox_block(
-                    connectionComboboxSelectionChanged
-                );
+                fastsignals::shared_connection_block combobox_block(connectionComboboxSelectionChanged);
                 toolWidget->setComboboxIndex(WCombobox::FirstCombo, methodint);
             }
         }
@@ -454,9 +452,7 @@ private:
             auto actualconstructionmethod = static_cast<int>(handler->constructionMethod());
 
             if (constructionmethod != actualconstructionmethod) {
-                boost::signals2::shared_connection_block combobox_block(
-                    connectionComboboxSelectionChanged
-                );
+                fastsignals::shared_connection_block combobox_block(connectionComboboxSelectionChanged);
                 toolWidget->setComboboxIndex(WCombobox::FirstCombo, actualconstructionmethod);
             }
         }

src/Mod/Sketcher/Gui/SketcherToolDefaultWidget.h

@@ -30,7 +30,7 @@
 #include <Gui/TaskView/TaskView.h>
 #include <Gui/TaskView/TaskDialog.h>
 #include <Gui/Selection/Selection.h>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 
 class QComboBox;
@@ -156,27 +156,30 @@ public:
     void restoreComboboxPref(int comboboxindex);
 
     template<typename F>
-    boost::signals2::connection registerParameterTabOrEnterPressed(F&& fn)
+    fastsignals::advanced_connection registerParameterTabOrEnterPressed(F&& fn)
     {
-        return signalParameterTabOrEnterPressed.connect(std::forward<F>(fn));
+        return signalParameterTabOrEnterPressed.connect(
+            std::forward<F>(fn),
+            fastsignals::advanced_tag()
+        );
     }
 
     template<typename F>
-    boost::signals2::connection registerParameterValueChanged(F&& fn)
+    fastsignals::advanced_connection registerParameterValueChanged(F&& fn)
     {
-        return signalParameterValueChanged.connect(std::forward<F>(fn));
+        return signalParameterValueChanged.connect(std::forward<F>(fn), fastsignals::advanced_tag());
     }
 
     template<typename F>
-    boost::signals2::connection registerCheckboxCheckedChanged(F&& fn)
+    fastsignals::advanced_connection registerCheckboxCheckedChanged(F&& fn)
     {
-        return signalCheckboxCheckedChanged.connect(std::forward<F>(fn));
+        return signalCheckboxCheckedChanged.connect(std::forward<F>(fn), fastsignals::advanced_tag());
     }
 
     template<typename F>
-    boost::signals2::connection registerComboboxSelectionChanged(F&& fn)
+    fastsignals::advanced_connection registerComboboxSelectionChanged(F&& fn)
     {
-        return signalComboboxSelectionChanged.connect(std::forward<F>(fn));
+        return signalComboboxSelectionChanged.connect(std::forward<F>(fn), fastsignals::advanced_tag());
     }
 
 
@@ -218,10 +221,10 @@ private:
 private:
     std::unique_ptr<Ui_SketcherToolDefaultWidget> ui;
 
-    boost::signals2::signal<void(int parameterindex)> signalParameterTabOrEnterPressed;
-    boost::signals2::signal<void(int parameterindex, double value)> signalParameterValueChanged;
-    boost::signals2::signal<void(int checkboxindex, bool value)> signalCheckboxCheckedChanged;
-    boost::signals2::signal<void(int comboindex, int value)> signalComboboxSelectionChanged;
+    fastsignals::signal<void(int parameterindex)> signalParameterTabOrEnterPressed;
+    fastsignals::signal<void(int parameterindex, double value)> signalParameterValueChanged;
+    fastsignals::signal<void(int checkboxindex, bool value)> signalCheckboxCheckedChanged;
+    fastsignals::signal<void(int comboindex, int value)> signalComboboxSelectionChanged;
 
     /// lock to block QT slots
     bool blockParameterSlots;

src/Mod/Sketcher/Gui/TaskDlgEditSketch.h

@@ -25,7 +25,7 @@
 #ifndef SKETCHERGUI_TaskDlgEditSketch_H
 #define SKETCHERGUI_TaskDlgEditSketch_H
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Gui/TaskView/TaskDialog.h>
 
@@ -37,7 +37,7 @@
 #include "ViewProviderSketch.h"
 
 
-using Connection = boost::signals2::connection;
+using Connection = fastsignals::connection;
 
 namespace SketcherGui
 {
@@ -75,7 +75,7 @@ public:
 
     /** @brief Function used to register a slot to be triggered when the tool widget is changed. */
     template<typename F>
-    boost::signals2::connection registerToolWidgetChanged(F&& f)
+    fastsignals::connection registerToolWidgetChanged(F&& f)
     {
         return ToolSettings->registerToolWidgetChanged(std::forward<F>(f));
     }

src/Mod/Sketcher/Gui/TaskSketcherConstraints.cpp

@@ -982,7 +982,7 @@ TaskSketcherConstraints::TaskSketcherConstraints(ViewProviderSketch* sketchView)
     //NOLINTBEGIN
     Gui::Application* app = Gui::Application::Instance;
     changedSketchView = app->signalChangedObject.connect(
-        std::bind(&TaskSketcherConstraints::onChangedSketchView, this, sp::_1, sp::_2));
+        std::bind(&TaskSketcherConstraints::onChangedSketchView, this, sp::_1, sp::_2), fastsignals::advanced_tag());
     //NOLINTEND
 
     updateList();

src/Mod/Sketcher/Gui/TaskSketcherConstraints.h

@@ -200,7 +200,7 @@ public:
 protected:
     void changeEvent(QEvent* e) override;
     ViewProviderSketch* sketchView;
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectionConstraintsChanged;
 
 private:
@@ -221,7 +221,7 @@ private:
                                                             // constraints associated with the
                                                             // selected geometry
     ConstraintFilterList* filterList;
-    boost::signals2::scoped_connection changedSketchView;
+    fastsignals::advanced_scoped_connection changedSketchView;
 
     // Buffering structures
     std::unordered_map<int, ConstraintItem*> constraintMap;

src/Mod/Sketcher/Gui/TaskSketcherElements.h

@@ -29,7 +29,7 @@
 #include <QListWidget>
 #include <QStyledItemDelegate>
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Gui/Selection/Selection.h>
 #include <Gui/TaskView/TaskView.h>
@@ -152,7 +152,7 @@ protected:
     void changeEvent(QEvent* e) override;
     void leaveEvent(QEvent* event) override;
     ViewProviderSketch* sketchView;
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectionElementsChanged;
 
 private:

src/Mod/Sketcher/Gui/TaskSketcherTool.h

@@ -29,7 +29,7 @@
 #include <Gui/TaskView/TaskView.h>
 #include <Gui/TaskView/TaskDialog.h>
 #include <Gui/Selection/Selection.h>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 namespace App
 {
@@ -63,7 +63,7 @@ public:
     void toolChanged(const std::string& toolname);
 
     template<typename F>
-    boost::signals2::connection registerToolWidgetChanged(F&& f)
+    fastsignals::connection registerToolWidgetChanged(F&& f)
     {
         return signalToolWidgetChanged.connect(std::forward<F>(f));
     }
@@ -71,9 +71,9 @@ public:
 private:
     ViewProviderSketch* sketchView;
     std::unique_ptr<QWidget> widget;
-    boost::signals2::scoped_connection changedSketchView;
+    fastsignals::scoped_connection changedSketchView;
 
-    boost::signals2::signal<void(QWidget* newwidget)> signalToolWidgetChanged;
+    fastsignals::signal<void(QWidget* newwidget)> signalToolWidgetChanged;
 };
 
 }  // namespace SketcherGui

src/Mod/Sketcher/Gui/ViewProviderSketch.h

@@ -29,7 +29,7 @@
 #include <Inventor/sensors/SoNodeSensor.h>
 #include <QCoreApplication>
 #include <QMetaObject>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 #include <memory>
 
 #include <Base/Parameter.h>
@@ -704,19 +704,19 @@ public:
     /** @name Signals for controlling information in Task dialogs */
     //@{
     /// signals if the constraints list has changed
-    boost::signals2::signal<void()> signalConstraintsChanged;
+    fastsignals::signal<void()> signalConstraintsChanged;
     /// signals if the sketch has been set up
-    boost::signals2::signal<
+    fastsignals::signal<
         void(const QString& state, const QString& msg, const QString& url, const QString& linkText)>
         signalSetUp;
     /// signals if the elements list has changed
-    boost::signals2::signal<void()> signalElementsChanged;
+    fastsignals::signal<void()> signalElementsChanged;
     //@}
 
     /** @name Register slot for signal */
     //@{
     template<typename F>
-    boost::signals2::connection registerToolChanged(F&& f)
+    fastsignals::connection registerToolChanged(F&& f)
     {
         return signalToolChanged.connect(std::forward<F>(f));
     }
@@ -863,7 +863,7 @@ private:
     /** @name signals*/
     //@{
     /// signals a tool change
-    boost::signals2::signal<void(const std::string& toolname)> signalToolChanged;
+    fastsignals::signal<void(const std::string& toolname)> signalToolChanged;
     //@}
 
     void slotToolWidgetChanged(QWidget* newwidget);
@@ -969,9 +969,9 @@ private:
     //@}
 
 private:
-    boost::signals2::connection connectUndoDocument;
-    boost::signals2::connection connectRedoDocument;
-    boost::signals2::connection connectSolverUpdate;
+    fastsignals::connection connectUndoDocument;
+    fastsignals::connection connectRedoDocument;
+    fastsignals::connection connectSolverUpdate;
 
     QMetaObject::Connection screenChangeConnection;
 
@@ -1005,7 +1005,7 @@ private:
 
     ViewProviderParameters viewProviderParameters;
 
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectionToolWidget;
 
     SoNodeSensor cameraSensor;

src/Mod/Spreadsheet/App/PropertySheet.h

@@ -353,7 +353,7 @@ private:
     /*! The associated python object */
     Py::SmartPtr PythonObject;
 
-    std::map<const App::DocumentObject*, boost::signals2::scoped_connection> depConnections;
+    std::map<const App::DocumentObject*, fastsignals::scoped_connection> depConnections;
 
     int updateCount = 0;
     bool restoring = false;

src/Mod/Spreadsheet/App/Sheet.h

@@ -231,15 +231,15 @@ public:
 
     // Signals
 
-    boost::signals2::signal<void(App::CellAddress)> cellUpdated;
+    fastsignals::signal<void(App::CellAddress)> cellUpdated;
 
-    boost::signals2::signal<void(App::Range)> rangeUpdated;
+    fastsignals::signal<void(App::Range)> rangeUpdated;
 
-    boost::signals2::signal<void(App::CellAddress)> cellSpanChanged;
+    fastsignals::signal<void(App::CellAddress)> cellSpanChanged;
 
-    boost::signals2::signal<void(int, int)> columnWidthChanged;
+    fastsignals::signal<void(int, int)> columnWidthChanged;
 
-    boost::signals2::signal<void(int, int)> rowHeightChanged;
+    fastsignals::signal<void(int, int)> rowHeightChanged;
 
     void renameObjectIdentifiers(
         const std::map<App::ObjectIdentifier, App::ObjectIdentifier>& paths

src/Mod/Spreadsheet/Gui/SheetModel.h

@@ -60,8 +60,8 @@ private:
     void cellUpdated(App::CellAddress address);
     void rangeUpdated(const App::Range& range);
 
-    boost::signals2::scoped_connection cellUpdatedConnection;
-    boost::signals2::scoped_connection rangeUpdatedConnection;
+    fastsignals::scoped_connection cellUpdatedConnection;
+    fastsignals::scoped_connection rangeUpdatedConnection;
     Spreadsheet::Sheet* sheet;
     QColor aliasBgColor;
     QColor textFgColor;

src/Mod/Spreadsheet/Gui/SheetTableView.h

@@ -125,7 +125,7 @@ protected:
 
     QTimer timer;
 
-    boost::signals2::scoped_connection cellSpanChangedConnection;
+    fastsignals::scoped_connection cellSpanChangedConnection;
     std::set<App::CellAddress> spanChanges;
 };
 

src/Mod/Spreadsheet/Gui/SpreadsheetView.h

@@ -139,9 +139,9 @@ protected:
     Spreadsheet::Sheet* sheet;
     SpreadsheetDelegate* delegate;
     SheetModel* model;
-    boost::signals2::scoped_connection columnWidthChangedConnection;
-    boost::signals2::scoped_connection rowHeightChangedConnection;
-    boost::signals2::scoped_connection positionChangedConnection;
+    fastsignals::scoped_connection columnWidthChangedConnection;
+    fastsignals::scoped_connection rowHeightChangedConnection;
+    fastsignals::scoped_connection positionChangedConnection;
 
     std::map<int, int> newColumnSizes;
     std::map<int, int> newRowSizes;

src/Mod/TechDraw/App/DrawPage.h

@@ -23,7 +23,7 @@
 #ifndef DrawPage_h_
 #define DrawPage_h_
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <App/DocumentObject.h>
 #include <App/PropertyStandard.h>
@@ -63,7 +63,7 @@ public:
     int addView(App::DocumentObject* docObj, bool setPosition = true);
     int removeView(App::DocumentObject* docObj);
     short mustExecute() const override;
-    boost::signals2::signal<void(const DrawPage*)> signalGuiPaint;
+    fastsignals::signal<void(const DrawPage*)> signalGuiPaint;
 
     /// returns the type name of the ViewProvider
     const char* getViewProviderName() const override { return "TechDrawGui::ViewProviderPage"; }

src/Mod/TechDraw/App/DrawView.h

@@ -23,7 +23,7 @@
 #ifndef DrawView_h_
 #define DrawView_h_
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 #include <QCoreApplication>
 #include <QRectF>
 
@@ -101,8 +101,8 @@ public:
     virtual Base::Vector3d getPosition() const { return Base::Vector3d(X.getValue(), Y.getValue(), 0.0); }
     virtual bool keepUpdated(void);
 
-    boost::signals2::signal<void (const DrawView*)> signalGuiPaint;
-    boost::signals2::signal<void (const DrawView*, std::string, std::string)> signalProgressMessage;
+    fastsignals::signal<void (const DrawView*)> signalGuiPaint;
+    fastsignals::signal<void (const DrawView*, std::string, std::string)> signalProgressMessage;
     void requestPaint(void);
     void showProgressMessage(std::string featureName, std::string text);
 

src/Mod/TechDraw/Gui/MDIViewPage.cpp

@@ -35,7 +35,7 @@
 #include <QPrintDialog>
 #include <QPrintPreviewDialog>
 #include <QPrinter>
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 #include <cmath>
 
 

src/Mod/TechDraw/Gui/MDIViewPage.h

@@ -136,7 +136,7 @@ protected:
     void sceneSelectionManager();
 
 private:
-    using Connection = boost::signals2::connection;
+    using Connection = fastsignals::connection;
     Connection connectDeletedObject;
 
     QAction *m_toggleFrameAction;

src/Mod/TechDraw/Gui/QGIView.h

@@ -25,7 +25,7 @@
 
 #include <Mod/TechDraw/TechDrawGlobal.h>
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <QColor>
 #include <QFont>

src/Mod/TechDraw/Gui/ViewProviderDrawingView.cpp

@@ -22,8 +22,8 @@
  ***************************************************************************/
 
 #include <limits>
-#include <boost/signals2.hpp>
-#include <boost/signals2/connection.hpp>
+#include <fastsignals/signal.h>
+#include <fastsignals/connection.h>
 
 #include <App/Application.h>
 #include <App/Document.h>

src/Mod/TechDraw/Gui/ViewProviderDrawingView.h

@@ -26,7 +26,7 @@
 
 #include <Mod/TechDraw/TechDrawGlobal.h>
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <Gui/Document.h>
 #include <Gui/ViewProviderDocumentObject.h>
@@ -89,7 +89,7 @@ public:
     void onProgressMessage(const TechDraw::DrawView* dv,
                          const std::string featureName,
                          const std::string text);
-    using Connection = boost::signals2::scoped_connection;
+    using Connection = fastsignals::scoped_connection;
     Connection connectGuiRepaint;
     Connection connectProgressMessage;
 

src/Mod/TechDraw/Gui/ViewProviderPage.cpp

@@ -28,8 +28,8 @@
 # include <QPointer>
 # include <QTextStream>
 
-# include <boost/signals2.hpp>
-# include <boost/signals2/connection.hpp>
+#include <fastsignals/signal.h>
+#include <fastsignals/connection.h>
 
 #include <App/Document.h>
 #include <App/DocumentObject.h>

src/Mod/TechDraw/Gui/ViewProviderPage.h

@@ -27,7 +27,7 @@
 #include <QObject>
 #include <QPointer>
 
-#include <boost/signals2.hpp>
+#include <fastsignals/signal.h>
 
 #include <App/PropertyUnits.h>
 #include <Gui/ViewProviderDocumentObject.h>
@@ -110,7 +110,7 @@ public:
     void onGuiRepaint(const TechDraw::DrawPage* dp);
 
 // NOLINTBEGIN
-    using Connection = boost::signals2::scoped_connection;
+    using Connection = fastsignals::scoped_connection;
     Connection connectGuiRepaint;
 // NOLINTEND