kev/Drawer/MeshProcess/libMesh/inc/XJOSGView/ViewAndCallback/XJUserEventHandler.h

#pragma once

#include <osgViewer/ViewerEventHandlers>
#include <osg/MatrixTransform>
#include "../XJOSGObject/XJOSGObject.h"

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɫ
const osg::Vec4 HIGHTLIGHT_COLOR = osg::Vec4(0.8, 0.0, 0.0, 1.0);
const osg::Vec4 PICKPOINT_COLOR = osg::Vec4(0.0, 0.0, 1.0, 1.0);
																
// PickHandler<65><72><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʵ<EFBFBD><CAB5><EFBFBD>û<EFBFBD>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD>GUIEventHandler <20><><EFBFBD><EFBFBD><EFBFBD>ࡣ

//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>õ<EFBFBD>
class CXJOSGPickHandler : public osgGA::GUIEventHandler
{
public:
	CXJOSGPickHandler();

	enum pickMode
	{
		PICK_OBJECT = 0,
		PICK_POINT = 1
	};

	bool handle( const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa );

	// ִ<><D6B4><EFBFBD>û<EFBFBD>ѡ<EFBFBD><D1A1><EFBFBD>IJ<EFBFBD><C4B2><EFBFBD><EFBFBD><EFBFBD>
	bool pick( const double x, const double y, osgViewer::Viewer* viewer );

	//<2F><><EFBFBD><EFBFBD>ѡ<EFBFBD><D1A1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͣ<EFBFBD><CDA3>㻹<EFBFBD>Ƕ<EFBFBD><C7B6><EFBFBD><EFBFBD><EFBFBD>
	void SetPickMode(int pickType) {m_pickType = pickType;}

	//<2F><><EFBFBD><EFBFBD>ѡ<EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>ϵĵ<CFB5>
	osg::Vec3 GetPickPoint(){return m_pickPoint;}

	//<2F>ж<EFBFBD><D0B6>Ƿ<EFBFBD>ѡ<EFBFBD>ж<EFBFBD><D0B6><EFBFBD>
	bool GetPickResult(){return m_pickResult;}

	//<2F><><EFBFBD><EFBFBD>ѡ<EFBFBD>е<EFBFBD><D0B5><EFBFBD>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>
	CXJOSGObject * GetPickObject(){return m_pickObject;}

protected:
	// <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>갴<EFBFBD>º<EFBFBD><C2BA>ƶ<EFBFBD>ʱ<EFBFBD><CAB1>XY <20><><EFBFBD>ꡣ
	float _mX,_mY;

	bool m_pickResult;
	osg::Vec3 m_pickPoint;
	CXJOSGObject* m_pickObject;

	int m_pickType;
};

/**<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̰<EFBFBD><CCB0><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
class PromptionHandler : public osgGA::GUIEventHandler
{
public:
	PromptionHandler(osg::ApplicationUsage* au = 0);

	enum HUDCameraType
	{
		LEFT_UP = 0,
		RIGHT_UP = 1,
		LEFT_DOWN = 2
	};

	//<2F><><EFBFBD>ڴ洢<DAB4><E6B4A2>ʾ<EFBFBD><CABE>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	typedef std::vector<std::string> PromptionList;

	void setKeyEventTogglesOnScreenHelp(int key) { _keyEventTogglesOnScreenHelp = key; }
	int getKeyEventTogglesOnScreenHelp() const { return _keyEventTogglesOnScreenHelp; }

	void reset();

	bool handle(const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& aa);

	void setHUDTextNode(osg::Node* node) {_HUDNode = node;}

protected:

	int                              _keyEventTogglesOnScreenHelp;
	bool                             _promptEnabled;
	bool                             _initialized;

	osg::Node*                        _HUDNode;
};