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Updates, from Neil Salter, to comments etc to osgGA which add better

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explanations of how each of the classes operates.
This commit is contained in:
Robert Osfield
2002-08-28 14:27:18 +00:00
parent 7d6197441e
commit 03ee77a315
13 changed files with 325 additions and 196 deletions
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47
include/osgGA/GUIEventHandler
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@@ -38,21 +38,19 @@ This request is made via the GUIActionAdapter class.
class OSGGA_EXPORT GUIEventHandler : public osg::Referenced
{
public:
public:
/** Handle events, return true if handled, false otherwise.*/
/** Handle events, return true if handled, false otherwise. */
virtual bool handle(const GUIEventAdapter& ea,GUIActionAdapter& us)=0;
/** Is this const GUIEventHandler a composite? */
/** Returns 0 if this GUIEventHandler is not a CompositeGUIEventHandler. */
virtual const CompositeGUIEventHandler* getComposite() const { return 0; }
/** Is this non-const GUIEventHandler a composite? */
/** Returns 0 if this GUIEventHandler is not a CompositeGUIEventHandler. */
virtual CompositeGUIEventHandler* getComposite() { return 0; }
/** Accept visits from GUIEventHandler visitors */
virtual void accept(GUIEventHandlerVisitor&) = 0;
//virtual void accept(GUIEventHandlerVisitor&) { }
};
@@ -62,7 +60,7 @@ CompositeGUIEventHandler allows GUIEventHandlers to be composed into hierarchies
class OSGGA_EXPORT CompositeGUIEventHandler : public GUIEventHandler
{
public:
public:
typedef std::vector< osg::ref_ptr<GUIEventHandler> > ChildList;
@@ -74,9 +72,7 @@ class OSGGA_EXPORT CompositeGUIEventHandler : public GUIEventHandler
virtual void accept(GUIEventHandlerVisitor& v) { v.visit(*this); }
/* Composite-specific methods below */
// Composite-specific methods below
virtual bool addChild(GUIEventHandler *geh);
@@ -90,28 +86,27 @@ class OSGGA_EXPORT CompositeGUIEventHandler : public GUIEventHandler
bool containsNode( const GUIEventHandler* node ) const
{
for (ChildList::const_iterator itr=_children.begin();
itr!=_children.end();
++itr)
{
if (itr->get()==node) return true;
}
return false;
for (ChildList::const_iterator itr=_children.begin();
itr!=_children.end();
++itr)
{
if (itr->get()==node) return true;
}
return false;
}
ChildList::iterator findChild( const GUIEventHandler* node )
{
for (ChildList::iterator itr=_children.begin();
itr!=_children.end();
++itr)
{
if (itr->get()==node) return itr;
}
return _children.end();
for (ChildList::iterator itr=_children.begin();
itr!=_children.end();
++itr)
{
if (itr->get()==node) return itr;
}
return _children.end();
}
private:
private:
ChildList _children;