Initial commit

Lts/Viewer/SituationMap/Common/simple_value.h

@@ -0,0 +1,96 @@
+/**
+  * @RDE_HEADER@
+  * Helper class for storing a simple value and an implizit changed flag
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+// Qt
+
+#include <sstream>
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+
+/*! \class SimpleValue
+    \brief Simple storing fo values
+ */
+template <class TYPE> class SimpleValue
+{
+protected:
+  TYPE m_value = TYPE();                 // '{}' to initialize the member (and avoid unconditional jumps@valgrind)
+  bool m_changed = true;
+
+public:
+  SimpleValue() = default;
+  // cppcheck-suppress noExplicitConstructor
+  SimpleValue(const TYPE &value) // should not be declared explicit to avoid additional writing stuff to cast values
+    : m_value(value)
+  {}
+
+  SimpleValue<TYPE> &operator=(const TYPE &newValue)
+  {
+    if (this->m_value != newValue)
+    {
+      this->m_value = newValue;
+      m_changed     = true;
+    }
+    return *this;
+  }
+
+  const TYPE &operator()() const
+  {
+    return this->m_value;
+  }
+
+  const TYPE &value() const
+  {
+    return this->m_value;
+  }
+
+  TYPE &refValue()
+  {
+    m_changed = true;
+    return this->m_value;
+  }
+
+  const TYPE &refValue() const
+  {
+    return this->m_value;
+  }
+
+
+  bool changed() const
+  {
+    return m_changed;
+  }
+
+  void reset()
+  {
+    m_changed = false;
+  }
+
+  void setChanged()
+  {
+    m_changed = true;
+  }
+
+
+  friend std::ostream &operator<<(std::ostream   &stream,
+                                  const SimpleValue &simpleVal)
+  {
+    stream << simpleVal.value();
+    return stream;
+  }
+
+};
+
+
+
+} // namespace SituationMap
+