Canvas: Respect clipping while event handling.

[simgear.git] / simgear / canvas / elements / CanvasGroup.hxx

diff --git a/simgear/canvas/elements/CanvasGroup.hxx b/simgear/canvas/elements/CanvasGroup.hxx
index 8a40eaaba814eeeb62b43fc1fcbf70359688dd0d..74adeafe6a7270511a1bff7b13f33b44162c257c 100644 (file)
--- a/simgear/canvas/elements/CanvasGroup.hxx
+++ b/simgear/canvas/elements/CanvasGroup.hxx
@@ -34,6 +34,9 @@ namespace canvas
     public Element
   {
     public:
+      static const std::string TYPE_NAME;
+      static void staticInit();
+
       typedef std::list< std::pair< const SGPropertyNode*,
                                     ElementPtr
                                   >
@@ -49,6 +52,33 @@ namespace canvas
                               const std::string& id = "" );
       ElementPtr getChild(const SGPropertyNode* node);
       ElementPtr getChild(const std::string& id);
+      ElementPtr getOrCreateChild( const std::string& type,
+                                   const std::string& id );
+
+      template<class T>
+      boost::shared_ptr<T> createChild(const std::string& id = "")
+      {
+        return boost::dynamic_pointer_cast<T>( createChild(T::TYPE_NAME, id) );
+      }
+
+      template<class T>
+      boost::shared_ptr<T> getChild(const SGPropertyNode* node)
+      {
+        return boost::dynamic_pointer_cast<T>( getChild(node) );
+      }
+
+      template<class T>
+      boost::shared_ptr<T> getChild(const std::string& id)
+      {
+        return boost::dynamic_pointer_cast<T>( getChild(id) );
+      }
+
+      template<class T>
+      boost::shared_ptr<T> getOrCreateChild(const std::string& id)
+      {
+        return
+          boost::dynamic_pointer_cast<T>( getOrCreateChild(T::TYPE_NAME, id) );
+      }
 
       /**
        * Get first child with given id (breadth-first search)
@@ -63,22 +93,30 @@ namespace canvas
 
       virtual bool traverse(EventVisitor& visitor);
 
-      virtual bool setStyle(const SGPropertyNode* child);
+      virtual bool setStyle( const SGPropertyNode* child,
+                             const StyleInfo* style_info = 0 );
 
       virtual osg::BoundingBox getTransformedBounds(const osg::Matrix& m) const;
 
     protected:
 
       static ElementFactories   _child_factories;
-      ChildList                 _children;
+
+      /**
+       * Overload in derived classes to allow for more/other types of elements
+       * to be managed.
+       */
+      virtual ElementFactory getChildFactory(const std::string& type) const;
 
       virtual void childAdded(SGPropertyNode * child);
       virtual void childRemoved(SGPropertyNode * child);
       virtual void childChanged(SGPropertyNode * child);
 
-      void handleZIndexChanged(ChildList::iterator child, int z_index = 0);
+      void handleZIndexChanged(ElementPtr child, int z_index = 0);
 
-      ChildList::iterator findChild(const SGPropertyNode* node);
+      ElementPtr getChildByIndex(size_t index) const;
+      ElementPtr findChild( const SGPropertyNode* node,
+                            const std::string& id ) const;
   };
 
 } // namespace canvas