1 // Visitor for traversing a canvas element hierarchy similar to the traversal
2 // of the DOM Level 3 Event Model
4 // Copyright (C) 2012 Thomas Geymayer <tomgey@gmail.com>
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Library General Public
8 // License as published by the Free Software Foundation; either
9 // version 2 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Library General Public License for more details.
16 // You should have received a copy of the GNU Library General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 #ifndef CANVAS_EVENT_VISITOR_HXX_
21 #define CANVAS_EVENT_VISITOR_HXX_
23 #include "canvas_fwd.hxx"
24 #include "CanvasEventManager.hxx"
44 * @param pos Mouse position
45 * @param root Element to dispatch events to if no element is hit
47 EventVisitor( TraverseMode mode,
48 const osg::Vec2f& pos,
49 const ElementPtr& root = ElementPtr() );
50 virtual ~EventVisitor();
51 virtual bool traverse(Element& el);
52 virtual bool apply(Element& el);
54 const EventPropagationPath& getPropagationPath() const;
58 TraverseMode _traverse_mode;
59 EventPropagationPath _target_path;
65 } // namespace simgear
68 #endif /* CANVAS_EVENTVISITOR_HXX_ */