diff --git a/src/Gui/BlenderNavigationStyle.cpp b/src/Gui/BlenderNavigationStyle.cpp
index 7e10aa9e77..b67e8ee6e5 100644
--- a/src/Gui/BlenderNavigationStyle.cpp
+++ b/src/Gui/BlenderNavigationStyle.cpp
@@ -118,41 +118,8 @@ SbBool BlenderNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::R:
-            processed = true;
-            viewer->resetToHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling
diff --git a/src/Gui/CADNavigationStyle.cpp b/src/Gui/CADNavigationStyle.cpp
index c973e56a3d..8b2c690bec 100644
--- a/src/Gui/CADNavigationStyle.cpp
+++ b/src/Gui/CADNavigationStyle.cpp
@@ -122,37 +122,8 @@ SbBool CADNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling
diff --git a/src/Gui/InventorNavigationStyle.cpp b/src/Gui/InventorNavigationStyle.cpp
index 2aaad878ff..27fdb07399 100644
--- a/src/Gui/InventorNavigationStyle.cpp
+++ b/src/Gui/InventorNavigationStyle.cpp
@@ -126,37 +126,8 @@ SbBool InventorNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling
diff --git a/src/Gui/NavigationStyle.cpp b/src/Gui/NavigationStyle.cpp
index c923f142ea..dc66d74beb 100644
--- a/src/Gui/NavigationStyle.cpp
+++ b/src/Gui/NavigationStyle.cpp
@@ -1387,6 +1387,55 @@ void NavigationStyle::syncModifierKeys(const SoEvent * const ev)
     }
 }
 
+SbBool NavigationStyle::handleKeyboardEvent(const SoKeyboardEvent * const event, const SbVec2f & posn)
+{
+    SbBool processed = false;
+    const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
+    switch (event->getKey()) {
+    case SoKeyboardEvent::LEFT_CONTROL:
+    case SoKeyboardEvent::RIGHT_CONTROL:
+        this->ctrldown = press;
+        break;
+    case SoKeyboardEvent::LEFT_SHIFT:
+    case SoKeyboardEvent::RIGHT_SHIFT:
+        this->shiftdown = press;
+        break;
+    case SoKeyboardEvent::LEFT_ALT:
+    case SoKeyboardEvent::RIGHT_ALT:
+        this->altdown = press;
+        break;
+    case SoKeyboardEvent::H:
+        processed = true;
+        viewer->saveHomePosition();
+        break;
+    case SoKeyboardEvent::R:
+        processed = true;
+        viewer->resetToHomePosition();
+        break;
+    case SoKeyboardEvent::S:
+    case SoKeyboardEvent::HOME:
+    case SoKeyboardEvent::LEFT_ARROW:
+    case SoKeyboardEvent::UP_ARROW:
+    case SoKeyboardEvent::RIGHT_ARROW:
+    case SoKeyboardEvent::DOWN_ARROW:
+        if (!this->isViewing())
+            this->setViewing(true);
+        break;
+    case SoKeyboardEvent::PAGE_UP:
+        processed = true;
+        doZoom(viewer->getSoRenderManager()->getCamera(), getDelta(), posn);
+        break;
+    case SoKeyboardEvent::PAGE_DOWN:
+        processed = true;
+        doZoom(viewer->getSoRenderManager()->getCamera(), -getDelta(), posn);
+        break;
+    default:
+        break;
+    }
+
+    return processed;
+}
+
 // The viewer is a state machine, and all changes to the current state
 // are made through this call.
 void NavigationStyle::setViewingMode(const ViewerMode newmode)
diff --git a/src/Gui/NavigationStyle.h b/src/Gui/NavigationStyle.h
index 959500a102..5f394c550b 100644
--- a/src/Gui/NavigationStyle.h
+++ b/src/Gui/NavigationStyle.h
@@ -214,6 +214,7 @@ protected:
     void addToLog(const SbVec2s pos, const SbTime time);
 
     void syncModifierKeys(const SoEvent * const ev);
+    SbBool handleKeyboardEvent(const SoKeyboardEvent * const event, const SbVec2f & posn);
 
 protected:
     struct { // tracking mouse movement in a log
diff --git a/src/Gui/OpenCascadeNavigationStyle.cpp b/src/Gui/OpenCascadeNavigationStyle.cpp
index 6f6fa816d4..376247f83d 100644
--- a/src/Gui/OpenCascadeNavigationStyle.cpp
+++ b/src/Gui/OpenCascadeNavigationStyle.cpp
@@ -118,37 +118,8 @@ SbBool OpenCascadeNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling
diff --git a/src/Gui/OpenSCADNavigationStyle.cpp b/src/Gui/OpenSCADNavigationStyle.cpp
index 6106d4eb14..4df1eefbe7 100644
--- a/src/Gui/OpenSCADNavigationStyle.cpp
+++ b/src/Gui/OpenSCADNavigationStyle.cpp
@@ -118,37 +118,8 @@ SbBool OpenSCADNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling
diff --git a/src/Gui/RevitNavigationStyle.cpp b/src/Gui/RevitNavigationStyle.cpp
index 289af98f9b..df547cd44c 100644
--- a/src/Gui/RevitNavigationStyle.cpp
+++ b/src/Gui/RevitNavigationStyle.cpp
@@ -118,37 +118,8 @@ SbBool RevitNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling
diff --git a/src/Gui/TouchpadNavigationStyle.cpp b/src/Gui/TouchpadNavigationStyle.cpp
index d039c54de9..4ee5b53e07 100644
--- a/src/Gui/TouchpadNavigationStyle.cpp
+++ b/src/Gui/TouchpadNavigationStyle.cpp
@@ -118,45 +118,8 @@ SbBool TouchpadNavigationStyle::processSoEvent(const SoEvent * const ev)
 
     // Keyboard handling
     if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId())) {
-        const SoKeyboardEvent * const event = (const SoKeyboardEvent *) ev;
-        const SbBool press = event->getState() == SoButtonEvent::DOWN ? true : false;
-        switch (event->getKey()) {
-        case SoKeyboardEvent::LEFT_CONTROL:
-        case SoKeyboardEvent::RIGHT_CONTROL:
-            this->ctrldown = press;
-            break;
-        case SoKeyboardEvent::LEFT_SHIFT:
-        case SoKeyboardEvent::RIGHT_SHIFT:
-            this->shiftdown = press;
-            break;
-        case SoKeyboardEvent::LEFT_ALT:
-        case SoKeyboardEvent::RIGHT_ALT:
-            this->altdown = press;
-            break;
-        case SoKeyboardEvent::H:
-            processed = true;
-            viewer->saveHomePosition();
-            break;
-        case SoKeyboardEvent::S:
-        case SoKeyboardEvent::HOME:
-        case SoKeyboardEvent::LEFT_ARROW:
-        case SoKeyboardEvent::UP_ARROW:
-        case SoKeyboardEvent::RIGHT_ARROW:
-        case SoKeyboardEvent::DOWN_ARROW:
-            if (!this->isViewing())
-                this->setViewing(true);
-            break;
-        case SoKeyboardEvent::PAGE_UP:
-            doZoom(viewer->getSoRenderManager()->getCamera(), getDelta(), posn);
-            processed = true;
-            break;
-        case SoKeyboardEvent::PAGE_DOWN:
-            doZoom(viewer->getSoRenderManager()->getCamera(), -getDelta(), posn);
-            processed = true;
-            break;
-        default:
-            break;
-        }
+        const SoKeyboardEvent * const event = static_cast<const SoKeyboardEvent *>(ev);
+        processed = handleKeyboardEvent(event, posn);
     }
 
     // Mouse Button / Spaceball Button handling