#pragma once
#include <QFrame>
#include <QOpenGLWidget>
#include <QScrollBar>
#include <QGridLayout>
#include "base/SeriesInstance.h"
#include "view/myQVTKOpenGLNativeWidget.h"

#include <QThread>
class infinitiViewer;
class vtkCornerAnnotation;
class vtkGenericOpenGLRenderWindow;
class MyTitleBar;
class pqVCRController;
class pqVCRToolbar;


namespace scrollScope {
	enum TriggerType
	{
		USER_TRIGGER,  //a,b,c
		STYLE_TRIGGER,//b,c
		SYNC_ONLY,//do nothing
	};
}
class  DicomImageView : public QFrame
{
	Q_OBJECT
		typedef QOpenGLWidget Superclass;
public:
	//a:real effect
	//b:corner info update
	//c:scroll value sync
	explicit DicomImageView(QWidget* parent = Q_NULLPTR);
	~DicomImageView() override;
	

	void ShowMetaData();
	QVTKOpenGLNativeWidget* getGLWidget()
	{
		return _glWidt;
	}
	vtkGenericOpenGLRenderWindow* getRenWin()
	{
		return m_glrenWin;
	}
	infinitiViewer* getImageViewer()
	{
		return _ImageViewer;
	}

	void setScrollChangedType(int type)
	{
		_ScrollTriggerType = type;
	}
	void setHighlight(bool yes);
	void Render();

	//Series 
	void setDicomImageView(SeriesInstance *series);
	bool HasSeries();
	int getSeriesNumber();
	SeriesInstance* getSeriesInstance()
	{
		return _Series;
	}

	//Reset
	void ResetView();


	//Corner Info
	void updateCornerInfoAll();
	void updateCornerInfoPrivacy();

	//Window level
	void getWindowLevel(double &level, double &width);
	void setWindowLevel(double level, double width);

	//Transformation
	void ClearTransformations();
	void HFlip();
	void VFlip();
	void Rotate(double angle, TransFormType operation);


	//Fusion
	bool IsFusion();
	void IncreFusionOpacity(double percent);
	void SetFusionInput(DicomImageView *overlap);
	void removeViewWithFusion();


	//Measure
	void ActiveMeasure(Measure *m);
	void DeleteSelectedMeasure();
	void DeleteCurrentSliceMeasure();
	void DeleteCurrentSeriesMeasure();
	void removeViewWithMeasure();


	//Sync slice
	void AddSlice(int step);
	void SetSlice(int slice);
	void SetZoomScale(double scale);
	void SetPanOffset(double * p);

	//CineMode
	void onFirstFrame();
	void onPreviousFrame();
	void onNextFrame();
	void onLastFrame();
	bool IsCine() { return isCine; }
	void cineModeOn();
	bool isVCRVisible();
	void setVCRVisible(bool);
	void setVCRToolbar(pqVCRToolbar* toolbar)
	{
		_vcr_toolbar = toolbar;
	}
	pqVCRToolbar* getVCRToolbar()
	{
		return _vcr_toolbar;
	}
	pqVCRController* getVCRController()
	{
		return _vcr_ctrl;
	}

	//Negative
	void ToggleNegativeMode();


signals:
	/**
	 * This signal will be emitted whenever a mouse event occurs within the QVTK window.
	 */
	
	void scroll_ValueChanged(int);
	void Signal_ViewEmpty(DicomImageView *view);
	void Signal_ViewClicked(DicomImageView *view);
	void Signal_viewDoubleclicked(DicomImageView *view);
	void Signal_scrollValueChanged(DicomImageView *view, int slice);
	void Signal_DragDropEvent(DicomImageView *view,thumbnailImage* tb);
	void Signal_SyncEvent(DicomImageView *view, int interactionMode,void* calldata);
	void Signal_WindowLevelEventForFusion(double level,double width);
	void Signal_Transformation(TransFormType);

public slots:
	//for title bar use
	void Slot_viewDoubleclicked();
	void Slot_ViewEmpty();
	void Slot_scrollValueChanged(int);
	void Slot_WindowLevelEventForFusion(double level, double width);
	void Slot_UpdateOrienInfo(TransFormType);

protected:
	void mousePressEvent(QMouseEvent* event) Q_DECL_OVERRIDE;
	void mouseMoveEvent(QMouseEvent* event) Q_DECL_OVERRIDE;
	void mouseReleaseEvent(QMouseEvent* event) Q_DECL_OVERRIDE;
	void mouseDoubleClickEvent(QMouseEvent* event) Q_DECL_OVERRIDE;
	void wheelEvent(QWheelEvent *event) Q_DECL_OVERRIDE;

	void dragEnterEvent(QDragEnterEvent *e);
	void dragMoveEvent(QDragMoveEvent *e);
	void dropEvent(QDropEvent *e);
	void dragLeaveEvent(QDragLeaveEvent *e);
	void resizeEvent(QResizeEvent *event);


private:
	void removeFusion();

	void OverlayOn()
	{
		isOverlay = true;
	}
	void OverlayOff()
	{
		isOverlay = false;
	}
	bool IsOverlay()
	{
		return isOverlay;
	}
	void SetBaseView(DicomImageView *v)
	{
		_base = v;
	}
	void SetOverlayView(DicomImageView *v)
	{
		_overlay = v;
	}


	
	//Callback
	void doubleclickedEventCb(vtkObject* sender, unsigned long eventId, void* calldata = nullptr);
	void scalarEventCb(vtkObject* sender, unsigned long eventId, void* calldata = nullptr);
	void updateWindowLevelCb(vtkObject*caller, unsigned long eid, void *calldata);
	void syncEventFunc(vtkObject*caller, unsigned long eid, void *calldata);


	void initCineModeThread();
	MyTitleBar* createMyTitleBar();
	void orphanizeSeriesInstance();
	void ResetPanZoom();

	//bool deleteOlderSeries(SeriesInstance* old);
	void initScrollbar();
	void CopyFromSeries(SeriesInstance *series);
	
	vtkSmartPointer <vtkGenericOpenGLRenderWindow> m_glrenWin;

	infinitiViewer* _ImageViewer = nullptr;
	SeriesInstance* _Series =nullptr;
	QScrollBar* _scrollBar =nullptr;
	MyTitleBar *_titleBar =nullptr;
	QVTKOpenGLNativeWidget* _glWidt = nullptr;
	pqVCRToolbar* _vcr_toolbar = nullptr;
	pqVCRController *_vcr_ctrl = nullptr;
	QThread _thread;
	DicomImageView *_overlay = nullptr;
	DicomImageView *_base = nullptr;

	int _SliceStep =0;
	int _PrevSlice =0;
	int _ScrollTriggerType = scrollScope::TriggerType::USER_TRIGGER;

	bool isCine = false;
	bool isNegative = false;
	bool isOverlay = false;
};