79 lines
3.1 KiB
C++
79 lines
3.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSGGA_EVENTHANDLER
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#define OSGGA_EVENTHANDLER 1
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#include <vector>
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#include <osg/Drawable>
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#include <osg/ApplicationUsage>
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#include <osgGA/Export>
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#include <osgGA/GUIEventAdapter>
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#include <osgGA/GUIActionAdapter>
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namespace osgGA{
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/**
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EventHandler is base class for adding handling of events, either as node event callback, drawable event callback or an event handler attached directly to the view(er)
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*/
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class OSGGA_EXPORT EventHandler : public osg::NodeCallback, public osg::DrawableEventCallback
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{
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public:
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EventHandler() {}
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EventHandler(const EventHandler& eh,const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY):
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osg::Object(eh, copyop),
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osg::Callback(eh, copyop),
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osg::NodeCallback(eh, copyop),
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osg::DrawableEventCallback(eh, copyop) {}
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META_Object(osgGA, EventHandler);
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virtual NodeCallback* asNodeCallback() { return osg::NodeCallback::asNodeCallback(); }
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virtual const NodeCallback* asNodeCallback() const { return osg::NodeCallback::asNodeCallback(); }
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virtual DrawableEventCallback* asDrawableEventCallback() { return osg::DrawableEventCallback::asDrawableEventCallback(); }
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virtual const DrawableEventCallback* asDrawableEventCallback() const { return osg::DrawableEventCallback::asDrawableEventCallback(); }
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virtual bool run(osg::Object* object, osg::Object* data)
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{
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osg::Node* node = dynamic_cast<osg::Node*>(object);
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osg::NodeVisitor* nv = dynamic_cast<osg::NodeVisitor*>(data);
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operator()(node, nv);
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return true;
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}
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/** Event traversal node callback method. There is no need to override this method in subclasses of EventHandler as this implementation calls handle(..) for you. */
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virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);
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/** Event traversal drawable callback method. There is no need to override this method in subclasses of EventHandler as this implementation calls handle(..) for you. */
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virtual void event(osg::NodeVisitor* nv, osg::Drawable* drawable);
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/** Handle event. Override the handle(..) method in your event handlers to respond to events. */
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virtual bool handle(osgGA::Event* event, osg::Object* object, osg::NodeVisitor* nv);
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/** Get the user interface usage of this event handler, i.e. keyboard and mouse bindings.*/
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virtual void getUsage(osg::ApplicationUsage&) const {}
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protected:
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};
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}
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#endif
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