111 lines
4.1 KiB
C++
111 lines
4.1 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2005 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_EVENTQUEUE
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#define OSGGA_EVENTQUEUE 1
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#include <osgGA/GUIEventAdapter>
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#include <osg/ref_ptr>
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#include <osg/Timer>
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#include <OpenThreads/Mutex>
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#include <list>
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namespace osgGA {
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/**
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* EventQueue implementation for collecting and adapting windowing events
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*/
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class OSGGA_EXPORT EventQueue : public osg::Referenced
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{
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public:
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EventQueue(GUIEventAdapter::MouseYOrientation mouseYOrientation=GUIEventAdapter::Y_INCREASING_DOWNWARDS);
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typedef std::list< osg::ref_ptr<GUIEventAdapter> > Events;
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/** Set events.*/
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void setEvents(Events& events);
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/** Take the entire event queue leaving the EventQueue' event queue empty.*/
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bool takeEvents(Events& events);
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/** Take a copy the entire event queue leaving the EventQueue' event queue intact.*/
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bool copyEvents(Events& events) const;
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/** Add events to end of event queue.*/
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void appendEvents(Events& events);
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/** Add an event to the end of the event queue.*/
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void addEvent(GUIEventAdapter* event);
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/** method for adapting window resize event, placing this event on the back of the event queue. */
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void windowResize(float Xmin, float Ymin, float Xmax, float Ymax);
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/** method for adapting mouse scroll wheel events, placing this event on the back of the event queue. */
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void mouseScroll(GUIEventAdapter::ScrollingMotion sm);
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/** method for updating in response to a mouse warp. Note, just moves the mouse position without creating a new event for it.*/
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void mouseWarp(float x, float y);
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/** method for adapting mouse motion events whilst mouse buttons are pressed, placing this event on the back of the event queue.*/
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void mouseMotion(float x, float y);
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/** method for adapting mouse button pressed events, placing this event on the back of the event queue.*/
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void mouseButtonPress(float x, float y, unsigned int button);
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/** method for adapting mouse button release events, placing this event on the back of the event queue.*/
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void mouseButtonRelease(float x, float y, unsigned int button);
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/** method for adapting keyboard press events.*/
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void keyPress(GUIEventAdapter::KeySymbol key);
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/** method for adapting keyboard press events.*/
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void keyRelease(GUIEventAdapter::KeySymbol key);
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/** method for adapting frame events.*/
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void frame(double t);
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void setStartTick(osg::Timer_t tick) { _startTick = tick; }
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osg::Timer_t getStartTick() const { return _startTick; }
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double getTime() const { return osg::Timer::instance()->delta_s(_startTick, osg::Timer::instance()->tick()); }
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/** convinience method for create an event ready to fill in. Clones the getCurrentEventState() to produce a up to date event state. */
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GUIEventAdapter* createEvent();
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GUIEventAdapter* getCurrentEventState() { return _accumulateEventState.get(); }
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const GUIEventAdapter* getCurrentEventState() const { return _accumulateEventState.get(); }
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protected:
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virtual ~EventQueue();
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/** Prevent unwanted copy operator.*/
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EventQueue& operator = (const EventQueue&) { return *this; }
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osg::ref_ptr<GUIEventAdapter> _accumulateEventState;
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osg::Timer_t _startTick;
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mutable OpenThreads::Mutex _eventQueueMutex;
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Events _eventQueue;
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};
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}
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#endif
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