source: OGRE/trunk/ogrenew/OgreMain/src/OgreEventProcessor.cpp @ 692

/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2005 The OGRE Team
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/
#include "OgreStableHeaders.h"

#include "OgreEventProcessor.h"
#include "OgreEventDispatcher.h"
#include "OgreEventQueue.h"
#include "OgreRoot.h"
#include "OgreMouseEvent.h"
#include "OgreKeyEvent.h"
#include "OgreInput.h"
#include "OgreCursor.h"
#include "OgrePlatformManager.h"


namespace Ogre {
    //-----------------------------------------------------------------------
    template<> EventProcessor* Singleton<EventProcessor>::ms_Singleton = 0;
    EventProcessor* EventProcessor::getSingletonPtr(void)
    {
        return ms_Singleton;
    }
    EventProcessor& EventProcessor::getSingleton(void)
    {  
        assert( ms_Singleton );  return ( *ms_Singleton );  
    }
    //-----------------------------------------------------------------------
//-----------------------------------------------------------------------------
    EventProcessor::EventProcessor() :
                MouseTarget(),
                MouseMotionTarget()
    {
                mEventQueue = 0;
                mInputDevice = 0;
        mRegisteredAsFrameListener = false;
    }

//-----------------------------------------------------------------------------
    EventProcessor::~EventProcessor()
    {
        // just in case more frames are still being rendered
        // and was registered as a FrameListener.
        stopProcessingEvents();
                cleanup();
    }

//-----------------------------------------------------------------------------
        void EventProcessor::cleanup()
        {
                if (mEventQueue)
                        delete mEventQueue;

        for(DispatcherList::iterator i = mDispatcherList.begin(); i != mDispatcherList.end(); ++i )                 
        {
                        delete *i;
        }
                mDispatcherList.clear();

                PlatformManager::getSingleton().destroyInputReader(mInputDevice);

        }

//-----------------------------------------------------------------------------
        void EventProcessor::stopProcessingEvents()
        {

                mEventQueue->activateEventQueue(false);

        if(mRegisteredAsFrameListener)
        {
                    Root::getSingleton().removeFrameListener(this);
            mRegisteredAsFrameListener = false;
        }

        }

//-----------------------------------------------------------------------------
        void EventProcessor::initialise(RenderWindow* ren)
        {
                cleanup();


                mEventQueue = new EventQueue();

                mInputDevice = PlatformManager::getSingleton().createInputReader();
                mInputDevice->useBufferedInput(mEventQueue);
                mInputDevice->initialise(ren,true, true, false);        

        }
//-----------------------------------------------------------------------------

        void EventProcessor::addTargetManager(TargetManager* targetManager)
        {
                EventDispatcher* pDispatcher = new EventDispatcher(targetManager);      
                mDispatcherList.push_back(pDispatcher);
        }

    //-----------------------------------------------------------------------------
        void EventProcessor::addEventTarget(EventTarget* eventTarget)
        {
                mEventTargetList.push_back(eventTarget);
        }


//-----------------------------------------------------------------------------
        void EventProcessor::startProcessingEvents(bool registerListener)
        {
        if(registerListener)
        {
                    Root::getSingleton().addFrameListener(this);
            mRegisteredAsFrameListener = true;
        }

                mEventQueue->activateEventQueue(true);
        }


//-----------------------------------------------------------------------------
        bool EventProcessor::frameStarted(const FrameEvent& evt)
        {
                mInputDevice->capture();

                while (mEventQueue->getSize() > 0)
                {
                        InputEvent* e = mEventQueue->pop();
            processEvent(e);
                        delete e;
                }

                return true;
        }

//-----------------------------------------------------------------------------
        void EventProcessor::processEvent(InputEvent* e)
        {
            // try the event dispatcher list
        for (DispatcherList::iterator i = mDispatcherList.begin(); i != mDispatcherList.end(); ++i )                 
            {
                        (*i)->dispatchEvent(e);
                }

            // try the event target list
        if (!e->isConsumed())
        {
            EventTargetList::iterator i, iEnd;

            iEnd = mEventTargetList.end();
            for (i = mEventTargetList.begin(); i != iEnd; ++i )                 
                {
                            (*i)->processEvent(e);
                    }
        }

        if (!e->isConsumed())
        {
                    switch(e->getID()) 
                    {
                    case MouseEvent::ME_MOUSE_PRESSED:
                    case MouseEvent::ME_MOUSE_RELEASED:
                    case MouseEvent::ME_MOUSE_CLICKED:
                    case MouseEvent::ME_MOUSE_ENTERED:
                    case MouseEvent::ME_MOUSE_EXITED:
                    case MouseEvent::ME_MOUSE_DRAGENTERED:
                    case MouseEvent::ME_MOUSE_DRAGEXITED:
                    case MouseEvent::ME_MOUSE_DRAGDROPPED:
                            processMouseEvent(static_cast<MouseEvent*>(e));
                            break;
                    case MouseEvent::ME_MOUSE_MOVED:
                    case MouseEvent::ME_MOUSE_DRAGGED:
                    case MouseEvent::ME_MOUSE_DRAGMOVED:
                            processMouseMotionEvent(static_cast<MouseEvent*>(e));
                            break;
                    case KeyEvent::KE_KEY_PRESSED:
                    case KeyEvent::KE_KEY_RELEASED:
                    case KeyEvent::KE_KEY_CLICKED:
                            processKeyEvent(static_cast<KeyEvent*>(e));
                            break;
                    }
        }
        }

//-----------------------------------------------------------------------------
        void EventProcessor::addCursorMoveListener(MouseMotionListener* c)
        {
                mInputDevice->addCursorMoveListener(c);
        }
//-----------------------------------------------------------------------------
        void EventProcessor::removeCursorMoveListener(MouseMotionListener* c)
        {
                mInputDevice->removeCursorMoveListener(c);
        }

//-----------------------------------------------------------------------------
        Real EventProcessor::getLeft() const
        {
                return 0;
        }

//-----------------------------------------------------------------------------
        Real EventProcessor::getTop() const
        {
                return 0;
        }
        
//-----------------------------------------------------------------------------
        PositionTarget* EventProcessor::getPositionTargetParent() const 
        {
                return NULL;
        }
//-----------------------------------------------------------------------------

}