Gui: add function to check matches of key event and key sequence

src/Gui/CMakeLists.txt

@@ -1192,6 +1192,7 @@ SET(FreeCADGui_SRCS
     SpaceballEvent.h
     PreferencePackManager.h
     Thumbnail.h
+    Tools.h
     Utilities.h
     WaitCursor.h
     ManualAlignment.h

src/Gui/Tools.h

@@ -24,6 +24,9 @@
 #define GUI_TOOLS_H
 
 #include <QFontMetrics>
+#include <QKeyEvent>
+#include <QKeySequence>
+#include <FCGlobal.h>
 
 namespace Gui {
 
@@ -47,6 +50,10 @@ public:
         return fm.width(text, len);
 #endif
     }
+    static bool matches(QKeyEvent* ke, const QKeySequence& ks) {
+        uint searchkey = (ke->modifiers() | ke->key()) & ~(Qt::KeypadModifier | Qt::GroupSwitchModifier);
+        return ks == QKeySequence(searchkey);
+    }
 };
 
 } // namespace Gui