/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.

Additional permissions under GNU GPL version 3 section 7

If you modify this Program, or any covered work, by linking or
combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK,
NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent
JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK
(or a modified version of those libraries),
containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA,
PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG
JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the
licensors of this Program grant you additional
permission to convey the resulting work. Corresponding Source for a
non-source form of such a combination shall include the source code for
the parts of OpenSSL and IJG JPEG Library used as well as that of the covered
work.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//																			//
//	pfGUIKnobCtrl Definition												//
//																			//
//////////////////////////////////////////////////////////////////////////////

#include "hsTypes.h"
#include "pfGUIKnobCtrl.h"
#include "pfGameGUIMgr.h"
#include "pfGUIDialogMod.h"

#include "plInputCore/plInputInterface.h"
#include "pnMessage/plRefMsg.h"
#include "pfMessage/pfGameGUIMsg.h"
#include "plMessage/plAnimCmdMsg.h"
// #include "plAvatar/plAGModifier.h"
#include "plAvatar/plAGMasterMod.h"
#include "plAvatar/plAGAnimInstance.h"
#include "plSurface/plLayerAnimation.h"

#include "pnSceneObject/plSceneObject.h"
#include "pnSceneObject/plCoordinateInterface.h"

#include "plgDispatch.h"
#include "hsResMgr.h"


//// Constructor/Destructor //////////////////////////////////////////////////

pfGUIKnobCtrl::pfGUIKnobCtrl() :
	fAnimName(nil),
	fDragStart(0.f, 0.f, 0.f),
	fDragging(false),
	fAnimStartPos(0.f, 0.f, 0.f),
	fAnimEndPos(0.f, 0.f, 0.f),
	fDragRangeMin(0.f),
	fDragRangeMax(0.f),
	fAnimBegin(0.f),
	fAnimEnd(0.f),
	fAnimTimesCalced(false)
{
	SetFlag( kWantsInterest );
}

pfGUIKnobCtrl::~pfGUIKnobCtrl()
{
	delete [] fAnimName;
}

//// IEval ///////////////////////////////////////////////////////////////////

hsBool	pfGUIKnobCtrl::IEval( double secs, hsScalar del, UInt32 dirty )
{
	return pfGUIValueCtrl::IEval( secs, del, dirty );
}

//// MsgReceive //////////////////////////////////////////////////////////////

hsBool	pfGUIKnobCtrl::MsgReceive( plMessage *msg )
{
	return pfGUIValueCtrl::MsgReceive( msg );
}

//// Read/Write //////////////////////////////////////////////////////////////

void	pfGUIKnobCtrl::Read( hsStream *s, hsResMgr *mgr )
{
	pfGUIValueCtrl::Read(s, mgr);

	fAnimationKeys.Reset();
	UInt32 i, count = s->ReadSwap32();
	for( i = 0; i < count; i++ )
		fAnimationKeys.Append( mgr->ReadKey( s ) );
	fAnimName = s->ReadSafeString();

	fAnimTimesCalced = false;

	fAnimStartPos.Read( s );
	fAnimEndPos.Read( s );
}

void	pfGUIKnobCtrl::Write( hsStream *s, hsResMgr *mgr )
{
	pfGUIValueCtrl::Write( s, mgr );

	UInt32 i, count = fAnimationKeys.GetCount();
	s->WriteSwap32( count );
	for( i = 0; i < count; i++ )
		mgr->WriteKey( s, fAnimationKeys[ i ] );
	s->WriteSafeString( fAnimName );

	fAnimStartPos.Write( s );
	fAnimEndPos.Write( s );
}

//// UpdateBounds ////////////////////////////////////////////////////////////

void	pfGUIKnobCtrl::UpdateBounds( hsMatrix44 *invXformMatrix, hsBool force )
{
	pfGUIValueCtrl::UpdateBounds( invXformMatrix, force );
	if( fAnimationKeys.GetCount() > 0 )
		fBoundsValid = false;
}

//// HandleMouseDown/Up //////////////////////////////////////////////////////

void	pfGUIKnobCtrl::HandleMouseDown( hsPoint3 &mousePt, UInt8 modifiers )
{
	fDragStart = mousePt;
	fDragValue = fValue;
	fDragging = true;

	if( HasFlag( kMapToAnimationRange ) )
	{
		hsPoint3	scrnStart, scrnEnd;

		// At mouse-down, we take our local-space start and end points and
		// translate them by our parent object's local-to-world to get the
		// right points in world-space. We do this now because our parent
		// might be animated, which could complicate matters a tad.
		scrnStart = fAnimStartPos;
		scrnEnd = fAnimEndPos;

		plSceneObject *target = GetTarget();
		if( target != nil )
		{
			const plCoordinateInterface *ci = target->GetCoordinateInterface();
			if( ci != nil )
			{
				const plCoordinateInterface *parentCI = ci->GetParent();
				if( parentCI != nil )
				{
					const hsMatrix44 &parentLocalToWorld = parentCI->GetLocalToWorld();
	
					scrnStart = parentLocalToWorld * scrnStart;
					scrnEnd = parentLocalToWorld * scrnEnd;
				}
			}
		}

		scrnStart = fDialog->WorldToScreenPoint( scrnStart );
		scrnEnd = fDialog->WorldToScreenPoint( scrnEnd );

		if( HasFlag( kLeftRightOrientation ) )
		{
			fDragRangeMin = scrnStart.fX;
			fDragRangeMax = scrnEnd.fX;
		}
		else
		{
			fDragRangeMin = scrnStart.fY;
			fDragRangeMax = scrnEnd.fY;
		}
	}
	else if( HasFlag( kMapToScreenRange ) )
	{
		fDragRangeMin = 0.f;
		fDragRangeMax = 1.f;
	}
	else
		fDragRangeMin = -1;
}

void	pfGUIKnobCtrl::HandleMouseUp( hsPoint3 &mousePt, UInt8 modifiers )
{
	fDragging = false;
	HandleMouseDrag( mousePt, modifiers );
}

void	pfGUIKnobCtrl::HandleMouseDrag( hsPoint3 &mousePt, UInt8 modifiers )
{
	hsScalar oldValue = fValue, newValue = fDragValue;

	if( fDragRangeMin != -1 )
	{
		if( HasFlag( kLeftRightOrientation ) )
		{
			if( mousePt.fX < fDragRangeMin )
				newValue = fMin;
			else if( mousePt.fX > fDragRangeMax )
				newValue = fMax;
			else
				newValue = ( ( mousePt.fX - fDragRangeMin ) / ( fDragRangeMax - fDragRangeMin ) ) *
							( fMax - fMin ) + fMin;
		}
		else
		{
			if( mousePt.fY > fDragRangeMin )
				newValue = fMin;
			else if( mousePt.fY < fDragRangeMax )
				newValue = fMax;
			else
				newValue = ( (  fDragRangeMin - mousePt.fY) / ( fDragRangeMin - fDragRangeMax ) ) *
							( fMax - fMin ) + fMin;
		}

		if( HasFlag( kReverseValues ) )
			SetCurrValue( fMax - ( newValue - fMin ) );
		else
			SetCurrValue( newValue );
	}
	else
	{
		hsScalar diff;
		if( HasFlag( kLeftRightOrientation ) )
			diff = ( mousePt.fX - fDragStart.fX ) * 20.f;
		else
			diff = ( fDragStart.fY - mousePt.fY ) * 20.f;

		if( HasFlag( kReverseValues ) )
			SetCurrValue( fDragValue - diff );
		else
			SetCurrValue( fDragValue + diff );
	}

	// !fDragging = We're mousing-up, so if we're still dragging, we need to not have the only-
	// on-mouse-up flag set. Just FYI
	if( !fDragging || !HasFlag( kTriggerOnlyOnMouseUp ) )
		DoSomething();
}

//// SetAnimationKeys ////////////////////////////////////////////////////////

void	pfGUIKnobCtrl::SetAnimationKeys( hsTArray<plKey> &keys, const char *name )
{
	fAnimationKeys = keys;
	delete [] fAnimName;
	if( name != nil )
	{
		fAnimName = TRACKED_NEW char[ strlen( name ) + 1 ];
		strcpy( fAnimName, name );
	}
	else
		fAnimName = nil;
}

//// ICalcAnimTimes //////////////////////////////////////////////////////////
//	Loops through and computes the max begin and end for our animations. If
//	none of them are loaded and we're not already calced, returns false.

hsBool	pfGUIKnobCtrl::ICalcAnimTimes( void )
{
	if( fAnimTimesCalced )
		return true;

	hsScalar tBegin = 1e30, tEnd = -1e30;
	bool	 foundOne = false;

	for( int i = 0; i < fAnimationKeys.GetCount(); i++ )
	{
		// Handle AGMasterMods
		plAGMasterMod *mod = plAGMasterMod::ConvertNoRef( fAnimationKeys[ i ]->ObjectIsLoaded() );
		if( mod != nil )
		{
			for( int j = 0; j < mod->GetNumAnimations(); j++ )
			{
				hsScalar begin = mod->GetAnimInstance( j )->GetTimeConvert()->GetBegin();
				hsScalar end = mod->GetAnimInstance( j )->GetTimeConvert()->GetEnd();
				if( begin < tBegin )
					tBegin = begin;
				if( end > tEnd )
					tEnd = end;
			}
			foundOne = true;
		}
		// Handle layer animations
		plLayerAnimation *layer = plLayerAnimation::ConvertNoRef( fAnimationKeys[ i ]->ObjectIsLoaded() );
		if( layer != nil )
		{
			hsScalar begin = layer->GetTimeConvert().GetBegin();
			hsScalar end = layer->GetTimeConvert().GetEnd();
			if( begin < tBegin )
				tBegin = begin;
			if( end > tEnd )
				tEnd = end;
			foundOne = true;
		}
	}

	if( foundOne )
	{
		fAnimBegin = tBegin;
		fAnimEnd = tEnd;

		fAnimTimesCalced = true;
	}

	return fAnimTimesCalced;
}

//// SetCurrValue ////////////////////////////////////////////////////////////

void	pfGUIKnobCtrl::SetCurrValue( hsScalar v )
{
	int old = (int)fValue;
	pfGUIValueCtrl::SetCurrValue( v );

//	if( old == (int)fValue )
//		return;

	if( fAnimationKeys.GetCount() > 0 )
	{
		ICalcAnimTimes();

		hsScalar tLength = fAnimEnd - fAnimBegin;
		hsScalar newTime = fMin;

		if (fMin != fMax) // Protect against div by zero
		{
			if( HasFlag( kReverseValues ) )
				newTime = ( ( fMax - fValue ) / ( fMax - fMin ) ) * tLength + fAnimBegin;
			else
				newTime = ( ( fValue - fMin ) / ( fMax - fMin ) ) * tLength + fAnimBegin;
		}
		plAnimCmdMsg *msg = TRACKED_NEW plAnimCmdMsg();
		msg->SetCmd( plAnimCmdMsg::kGoToTime );	
		msg->SetAnimName( fAnimName );
		msg->fTime = newTime;
		msg->AddReceivers( fAnimationKeys );
		plgDispatch::MsgSend( msg );
	}
}

//// IGetDesiredCursor ///////////////////////////////////////////////////////

UInt32		pfGUIKnobCtrl::IGetDesiredCursor( void ) const
{
	if( HasFlag( kLeftRightOrientation ) )
	{
		if( fDragging )
			return plInputInterface::kCursorLeftRightDragging;

		return plInputInterface::kCursorLeftRightDraggable;
	}
	else
	{
		if( fDragging )
			return plInputInterface::kCursorUpDownDragging;

		return plInputInterface::kCursorUpDownDraggable;
	}
}