remove DynamicThemeMetric
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@@ -266,133 +266,6 @@ public:
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}
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};
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/*
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* Like ThemeMetric, but allows evaluating Lua expressions each time. This is
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* fast, since we only compile the expression once. To evaluate every time,
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* return a function instead of a value.
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*
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* This is just as fast as ThemeMetric when the value is not a function.
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*/
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template <class T>
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class DynamicThemeMetric : public IThemeMetric
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{
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protected:
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RString m_sGroup;
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RString m_sName;
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mutable T m_currentValue;
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bool m_bIsLoaded;
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LuaReference m_Value;
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public:
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/* Initializing with no group and name is allowed; if you do this, you must
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* call Load() to set them. This is done to allow initializing cached metrics
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* in one place for classes that don't receive their m_sName in the constructor
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* (everything except screens). */
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DynamicThemeMetric( const RString& sGroup = "", const RString& sName = "" ):
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m_sGroup( sGroup ),
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m_sName( sName ),
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m_bIsLoaded( false )
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{
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m_currentValue = T();
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ThemeManager::Subscribe( this );
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}
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DynamicThemeMetric( const ThemeMetric<T> &cpy ):
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IThemeMetric( cpy ),
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m_sGroup( cpy.m_sGroup ),
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m_sName( cpy.m_sName ),
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m_currentValue( cpy.m_currentValue ),
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m_bIsLoaded( cpy.m_bIsLoaded ),
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m_Value( cpy.m_Value )
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{
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ThemeManager::Subscribe( this );
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}
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~DynamicThemeMetric()
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{
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ThemeManager::Unsubscribe( this );
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}
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void Load( const RString &sGroup, const RString& sName )
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{
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m_sGroup = sGroup;
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m_sName = sName;
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Read();
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}
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void ChangeGroup( const RString &sGroup )
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{
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m_sGroup = sGroup;
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Read();
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}
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void Read()
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{
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if( m_sName != "" && THEME && THEME->IsThemeLoaded() )
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{
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Lua *L = LUA->Get();
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THEME->GetMetric( m_sGroup, m_sName, m_Value );
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m_Value.PushSelf( L );
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if( lua_type(L, -1) == LUA_TFUNCTION )
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{
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lua_pop( L, 1 );
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}
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else
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{
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m_Value.Unset();
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LuaHelpers::Pop( L, m_currentValue );
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}
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LUA->Release(L);
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m_bIsLoaded = true;
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}
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}
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void Clear()
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{
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m_Value.Unset();
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m_bIsLoaded = false;
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}
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const T& GetValue() const
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{
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ASSERT( m_sName != "" );
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ASSERT( m_bIsLoaded );
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/* If the value is a function, evaluate it every time. */
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if( m_Value.IsSet() )
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{
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Lua *L = LUA->Get();
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// call function with 0 arguments and 1 result
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m_Value.PushSelf( L );
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lua_call(L, 0, 1);
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ASSERT( !lua_isnil(L, -1) );
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LuaHelpers::Pop( L, m_currentValue );
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LUA->Release(L);
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}
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return m_currentValue;
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}
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operator const T& () const
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{
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return GetValue();
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}
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bool IsLoaded() const { return m_bIsLoaded; }
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//Hacks for VC6 for all boolean operators.
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bool operator ! () const { return !GetValue(); }
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bool operator && ( const T& input ) const { return GetValue() && input; }
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bool operator || ( const T& input ) const { return GetValue() || input; }
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bool operator == ( const T& input ) const { return GetValue() == input; }
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};
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#endif
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/*
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