////////////////////////////////////////////////////////////////////////////
//
//  Crytek Engine Source File.
//  Copyright (C), Crytek Studios, 2001-2005.
// -------------------------------------------------------------------------
//  File name:   WaveGraphCtrl.h
//  Version:     v1.00
//  Created:     05/11/2005 by Tomas (based on Timur's SplineCtr).
//  Compilers:   Visual Studio.NET 2003
//  Description: 
// -------------------------------------------------------------------------
//  History:
//
////////////////////////////////////////////////////////////////////////////

#ifndef __WAVEGRAPHCTRL_H__
#define __WAVEGRAPHCTRL_H__
#pragma once

#include <IFacialAnimation.h>
#include "../FacialEdContext.h"
#include "WaveFileReader.h"
#include "Controls/WndGridHelper.h"

struct ISound;

// Custom styles for this control.
#define WAVCTRLN_STYLE_NOGRID 0x0001
#define WAVCTRLN_STYLE_NO_TIME_MARKER 0x0002

#define WAVCTRLN_SCROLL_ZOOM (0x0003)
#define WAVCTRLN_TIME_CHANGE (0x0004)

struct WaveGraphCtrlWaveformChangeNotification
{
	NMHDR hdr;
	int waveformIndex;
	float deltaTime;
};

#define WAVECTRLN_BEGIN_MOVE_WAVEFORM (0x0005)
#define WAVECTRLN_MOVE_WAVEFORMS (0x0006)
#define WAVECTRLN_RESET_CHANGES (0x0007)
#define WAVECTRLN_END_MOVE_WAVEFORM (0x0008)

struct WaveGraphCtrlRClickNotification
{
	NMHDR hdr;
	int waveformIndex;
};
#define WAVECTRLN_RCLICK (0x0009)

//////////////////////////////////////////////////////////////////////////
// Spline control.
//////////////////////////////////////////////////////////////////////////
class CWaveGraphCtrl : public CWnd, public IFacialEdListener
{
public:
	DECLARE_DYNAMIC(CWaveGraphCtrl)

	CWaveGraphCtrl();
	virtual ~CWaveGraphCtrl();

	BOOL Create( DWORD dwStyle, const CRect& rc, CWnd* pParentWnd, UINT nID );

	void SetContext( CFacialEdContext *pContext );

	int AddWaveform();
	void DeleteWaveform(int index);
	int GetWaveformCount();
	void SetWaveformTime(int index, float time);
	void LoadWaveformSound(int index, const CString &soundFile);
	void DeleteUnusedSounds();
	float GetWaveformLength(int waveformIndex);
	void SetWaveformTextString(int waveformIndex, const CString &text);

	void SetTimeRange( const Range &r ) { m_timeRange = r; if (m_hWnd) Invalidate(); }
	void SetTimeMarker( float fTime );
	float GetTimeMarker();

	float CalculateTimeRange();

	void StartPlayback(); // starts the sound to play from current marker position
	void StopPlayback();  // stops the sounds
	void PausePlayback();

	void BeginScrubbing();
	void EndScrubbing();

	void SetPlaybackSpeed(float fSpeed);
	float GetPlaybackSpeed();

	//////////////////////////////////////////////////////////////////////////
	// Scrolling/Zooming.
	//////////////////////////////////////////////////////////////////////////
	Vec2   ClientToWorld( CPoint point );
	CPoint WorldToClient( Vec2 v );
	void SetZoom( Vec2 zoom,CPoint center );
	void SetZoom( Vec2 zoom );
	Vec2 GetZoom() const { return m_grid.zoom; };
	void SetScrollOffset( Vec2 ofs );
	Vec2 GetScrollOffset() const { return m_grid.origin; };
	float SnapTime( float time );
	float SnapValue( float val );
	void SetLeftOffset( int nLeft );
	//////////////////////////////////////////////////////////////////////////
	//////////////////////////////////////////////////////////////////////////

	void SetBottomWnd( CWnd *pWnd,int nHeight );

	float FindEndOfWaveforms();

	void UpdatePlayback();

	struct SoundCacheEntry
	{
		SoundCacheEntry(const CString& soundFilename, CWaveFileReader* pWaveFileReader, _smart_ptr<ISound> pSound, int refcount)
			: soundFilename(soundFilename), pWaveFileReader(pWaveFileReader), pSound(pSound), refcount(refcount) {}

		CString soundFilename;
		CWaveFileReader* pWaveFileReader;
		_smart_ptr<ISound> pSound;
		int refcount;
	};
	typedef std::map<CString, SoundCacheEntry> SoundCache;

	struct Waveform
	{
		Waveform(): time(0) {}
		float time;
		CString text;
		SoundCache::iterator itSound;
	};

protected:
	DECLARE_MESSAGE_MAP()

	afx_msg BOOL OnEraseBkgnd(CDC* pDC);
	afx_msg void OnPaint();
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnTimer(UINT_PTR nIDEvent);

	// Drawing functions
	void DrawGrid(CDC* pDC);
	void DrawWaveGraph(CDC* pDC);
	void DrawTimeMarker(CDC* pDC);

	virtual void OnFacialEdEvent( EFacialEdEvent event,IFacialEffector *pEffector,int nChannelCount,IFacialAnimChannel **ppChannels );

	int HitTestWaveforms(const CPoint point);

	void SendNotifyMessage(int code);
	void SendNotifyMessageStructure(NMHDR* hdr);

	void StartSoundsAtTime(float fTime, bool bForceStart);
	void SetTimeMarkerInternal( float fTime );

private:
	enum EditMode
	{
		NothingMode,
		TrackingMode,
		DragMode
	};

	int m_nWaveformBeingDragged;
	CPoint m_dragStartPoint;

	CRect m_rcClient;
	CRect m_rcClipRect;
	CRect m_rcWaveGraph;

	CBitmap m_offscreenBitmap;

	EditMode m_editMode;

	CFacialEdContext *m_pContext;

	CRect m_TimeUpdateRect;
	Range m_timeRange;
	float m_fTimeMarker;
	//CTimeValue m_fLastTimeCheck;
	DWORD m_lastTimeCheck;
	CWndGridHelper m_grid;
	int m_nLeftOffset;

	bool m_bScrubbing;

	SoundCache m_soundCache;

	std::vector<Waveform> m_waveforms;

	int m_nTimer;

	CWnd *m_pBottomWnd;
	int m_bottomWndHeight;
	bool m_bPlaying;
	float m_fPlaybackSpeed;
};

#endif // __SplineCtrl_h__
