387 lines
11 KiB
C++
387 lines
11 KiB
C++
/* -*-c++-*- Present3D - Copyright (C) 1999-2006 Robert Osfield
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*
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* This software is open source and may be redistributed and/or modified under
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* the terms of the GNU General Public License (GPL) version 2.0.
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* The full license is in LICENSE.txt file included with this distribution,.
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*
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* This software 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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* include LICENSE.txt for more details.
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*/
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#ifndef SLIDEEVENTHANDLER
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#define SLIDEEVENTHANDLER 1
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#include <osg/Switch>
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#include <osg/Timer>
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#include <osg/ValueObject>
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#include <osg/ImageSequence>
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#include <osgGA/GUIEventHandler>
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#include <osgViewer/Viewer>
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#include <osgPresentation/CompileSlideCallback>
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#include <osgPresentation/PropertyManager>
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namespace osgPresentation
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{
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// forward declare
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class SlideEventHandler;
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/// Operations related to click to run/load/key events.
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enum Operation
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{
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RUN,
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LOAD,
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EVENT,
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JUMP,
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FORWARD_EVENT
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};
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struct JumpData
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{
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JumpData():
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relativeJump(true),
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slideNum(0),
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layerNum(0) {}
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JumpData(bool in_relativeJump, int in_slideNum, int in_layerNum):
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relativeJump(in_relativeJump),
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slideNum(in_slideNum),
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layerNum(in_layerNum) {}
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JumpData(const std::string& in_slideName, const std::string& in_layerName):
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relativeJump(true),
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slideNum(0),
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layerNum(0),
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slideName(in_slideName),
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layerName(in_layerName) {}
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JumpData(const JumpData& rhs):
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relativeJump(rhs.relativeJump),
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slideNum(rhs.slideNum),
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layerNum(rhs.layerNum),
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slideName(rhs.slideName),
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layerName(rhs.layerName) {}
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JumpData& operator = (const JumpData& rhs)
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{
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if (&rhs==this) return *this;
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relativeJump = rhs.relativeJump;
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slideNum = rhs.slideNum;
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layerNum = rhs.layerNum;
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slideName = rhs.slideName;
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layerName = rhs.layerName;
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return *this;
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}
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bool requiresJump() const
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{
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if (!slideName.empty() || !layerName.empty()) return true;
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return relativeJump ? (slideNum!=0 || layerNum!=0) : true;
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}
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bool jump(SlideEventHandler* seh) const;
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bool relativeJump;
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int slideNum;
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int layerNum;
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std::string slideName;
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std::string layerName;
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};
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struct HomePosition : public virtual osg::Referenced
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{
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HomePosition() {}
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HomePosition(const osg::Vec3& in_eye, const osg::Vec3& in_center, const osg::Vec3& in_up):
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eye(in_eye),
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center(in_center),
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up(in_up) {}
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osg::Vec3 eye;
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osg::Vec3 center;
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osg::Vec3 up;
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};
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struct KeyPosition
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{
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KeyPosition(unsigned int key=0, float x=FLT_MAX, float y=FLT_MAX):
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_key((osgGA::GUIEventAdapter::KeySymbol)key),
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_x(x),
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_y(y) {}
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void set(unsigned int key=0, float x=FLT_MAX, float y=FLT_MAX)
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{
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_key = (osgGA::GUIEventAdapter::KeySymbol)key;
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_x = x;
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_y = y;
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}
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osgGA::GUIEventAdapter::KeySymbol _key;
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float _x;
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float _y;
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};
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struct LayerCallback : public virtual osg::Referenced
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{
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virtual void operator() (osg::Node* node) const = 0;
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};
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struct OSGPRESENTATION_EXPORT LayerAttributes : public virtual osg::Referenced
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{
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LayerAttributes():_duration(0) {}
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LayerAttributes(double in_duration):_duration(in_duration) {}
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void setDuration(double duration) { _duration = duration; }
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double getDuration() const { return _duration; }
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typedef std::vector<KeyPosition> Keys;
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typedef std::vector<std::string> RunStrings;
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void setKeys(const Keys& keys) { _keys = keys; }
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const Keys& getKeys() const { return _keys; }
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void addKey(const KeyPosition& kp) { _keys.push_back(kp); }
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void setRunStrings(const RunStrings& runStrings) { _runStrings = runStrings; }
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const RunStrings& getRunStrings() const { return _runStrings; }
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void addRunString(const std::string& runString) { _runStrings.push_back(runString); }
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void setJump(const JumpData& jumpData) { _jumpData = jumpData; }
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const JumpData& getJumpData() const { return _jumpData; }
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double _duration;
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Keys _keys;
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RunStrings _runStrings;
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JumpData _jumpData;
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void addEnterCallback(LayerCallback* lc) { _enterLayerCallbacks.push_back(lc); }
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void addLeaveCallback(LayerCallback* lc) { _leaveLayerCallbacks.push_back(lc); }
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void callEnterCallbacks(osg::Node* node);
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void callLeaveCallbacks(osg::Node* node);
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typedef std::list< osg::ref_ptr<LayerCallback> > LayerCallbacks;
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LayerCallbacks _enterLayerCallbacks;
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LayerCallbacks _leaveLayerCallbacks;
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};
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struct FilePathData : public virtual osg::Referenced
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{
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FilePathData(const osgDB::FilePathList& fpl):filePathList(fpl) {}
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osgDB::FilePathList filePathList;
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};
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struct dereference_less
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{
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template<class T, class U>
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inline bool operator() (const T& lhs,const U& rhs) const
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{
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return *lhs < *rhs;
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}
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};
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struct ObjectOperator : public osg::Referenced
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{
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inline bool operator < (const ObjectOperator& rhs) const { return ptr() < rhs.ptr(); }
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virtual void* ptr() const = 0;
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virtual void enter(SlideEventHandler*) = 0;
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virtual void frame(SlideEventHandler*) {} ;
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virtual void maintain(SlideEventHandler*) = 0;
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virtual void leave(SlideEventHandler*) = 0;
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virtual void setPause(SlideEventHandler*, bool pause) = 0;
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virtual void reset(SlideEventHandler*) = 0;
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virtual ~ObjectOperator() {}
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};
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class OSGPRESENTATION_EXPORT ActiveOperators
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{
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public:
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ActiveOperators();
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~ActiveOperators();
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void collect(osg::Node* incommingNode, osg::NodeVisitor::TraversalMode tm = osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN);
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void process(SlideEventHandler* seh);
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void frame(SlideEventHandler*);
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void setPause(SlideEventHandler* seh, bool pause);
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bool getPause() const { return _pause; }
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void reset(SlideEventHandler* seh);
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typedef std::set< osg::ref_ptr<ObjectOperator>, dereference_less > OperatorList;
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protected:
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void processOutgoing(SlideEventHandler* seh);
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void processIncomming(SlideEventHandler* seh);
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void processMaintained(SlideEventHandler* seh);
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bool _pause;
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OperatorList _previous;
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OperatorList _current;
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OperatorList _outgoing;
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OperatorList _incomming;
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OperatorList _maintained;
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};
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class OSGPRESENTATION_EXPORT SlideEventHandler : public osgGA::GUIEventHandler
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{
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public:
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SlideEventHandler(osgViewer::Viewer* viewer=0);
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static SlideEventHandler* instance();
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META_Object(osgslideshowApp,SlideEventHandler);
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void set(osg::Node* model);
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virtual void accept(osgGA::GUIEventHandlerVisitor& v) { v.visit(*this); }
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/** Event traversal node callback method.*/
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virtual void operator()(osg::Node* node, osg::NodeVisitor* nv);
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virtual bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter&);
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virtual void getUsage(osg::ApplicationUsage& usage) const;
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osgViewer::Viewer* getViewer() { return _viewer.get(); }
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osg::Switch* getPresentationSwitch() { return _presentationSwitch.get(); }
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enum WhichPosition
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{
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FIRST_POSITION = 0,
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LAST_POSITION = -1
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};
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void compileSlide(unsigned int slideNum);
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void releaseSlide(unsigned int slideNum);
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unsigned int getNumSlides();
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int getActiveSlide() const { return _activeSlide; }
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int getActiveLayer() const { return _activeLayer; }
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osg::Switch* getSlide(int slideNum);
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osg::Node* getLayer(int slideNum, int layerNum);
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bool selectSlide(int slideNum,int layerNum=FIRST_POSITION);
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bool selectLayer(int layerNum);
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bool nextLayerOrSlide();
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bool previousLayerOrSlide();
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bool nextSlide();
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bool previousSlide();
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bool nextLayer();
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bool previousLayer();
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bool home();
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void setAutoSteppingActive(bool flag = true) { _autoSteppingActive = flag; }
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bool getAutoSteppingActive() const { return _autoSteppingActive; }
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void setTimeDelayBetweenSlides(double dt) { _timePerSlide = dt; }
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double getTimeDelayBetweenSlides() const { return _timePerSlide; }
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double getDuration(const osg::Node* node) const;
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double getCurrentTimeDelayBetweenSlides() const;
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void setReleaseAndCompileOnEachNewSlide(bool flag) { _releaseAndCompileOnEachNewSlide = flag; }
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bool getReleaseAndCompileOnEachNewSlide() const { return _releaseAndCompileOnEachNewSlide; }
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void setTimeDelayOnNewSlideWithMovies(float t) { _timeDelayOnNewSlideWithMovies = t; }
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float getTimeDelayOnNewSlideWithMovies() const { return _timeDelayOnNewSlideWithMovies; }
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void setLoopPresentation(bool loop) { _loopPresentation = loop; }
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bool getLoopPresentation() const { return _loopPresentation; }
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void dispatchEvent(const KeyPosition& keyPosition);
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void setRequestReload(bool flag);
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bool getRequestReload() const { return _requestReload; }
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double getReferenceTime() const { return _referenceTime; }
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protected:
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~SlideEventHandler() {}
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SlideEventHandler(const SlideEventHandler&,const osg::CopyOp&) {}
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bool home(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa);
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void updateAlpha(bool, bool, float x, float y);
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void updateLight(float x, float y);
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void updateOperators();
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osg::observer_ptr<osgViewer::Viewer> _viewer;
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osg::observer_ptr<osg::Switch> _showSwitch;
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int _activePresentation;
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osg::observer_ptr<osg::Switch> _presentationSwitch;
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int _activeSlide;
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osg::observer_ptr<osg::Switch> _slideSwitch;
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int _activeLayer;
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bool _firstTraversal;
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double _referenceTime;
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double _previousTime;
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double _timePerSlide;
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bool _autoSteppingActive;
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bool _loopPresentation;
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bool _pause;
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bool _hold;
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bool _updateLightActive;
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bool _updateOpacityActive;
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float _previousX, _previousY;
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bool _cursorOn;
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bool _releaseAndCompileOnEachNewSlide;
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bool _firstSlideOrLayerChange;
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osg::Timer_t _tickAtFirstSlideOrLayerChange;
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osg::Timer_t _tickAtLastSlideOrLayerChange;
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float _timeDelayOnNewSlideWithMovies;
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double _minimumTimeBetweenKeyPresses;
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double _timeLastKeyPresses;
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ActiveOperators _activeOperators;
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osg::ref_ptr<CompileSlideCallback> _compileSlideCallback;
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bool _requestReload;
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};
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}
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#endif
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