/*==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==*/
//////////////////////////////////////////////////////////////////////////////
//																			//
//	pfGUIMenuItem Definition												//
//																			//
//	The type of button that knows how to party.								//
//																			//
//////////////////////////////////////////////////////////////////////////////

#include "hsTypes.h"
#include "pfGUIMenuItem.h"
#include "pfGameGUIMgr.h"
#include "pfGUIControlHandlers.h"
#include "pfGUIDialogMod.h"
#include "pfGUIPopUpMenu.h"

#include "../plInputCore/plInputInterface.h"
#include "../pnMessage/plRefMsg.h"
#include "../plGImage/plDynamicTextMap.h"
#include "plgDispatch.h"
#include "hsResMgr.h"


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

pfGUIMenuItem::pfGUIMenuItem()
{
	fName = nil;
	fSkin = nil;
	fReportingHover = false;
	fSkinBuffersUpdated = true;
}

pfGUIMenuItem::~pfGUIMenuItem()
{
	SetSkin( nil, kTop );
	delete [] fName;
}

void	pfGUIMenuItem::SetName( const char *name )
{
	wchar_t *wName = hsStringToWString(name);
	SetName(wName);
	delete [] wName;
}

void	pfGUIMenuItem::SetName( const wchar_t *name )
{
	delete [] fName;
	if (name != nil)
	{
		fName = TRACKED_NEW wchar_t[wcslen(name)+1];
		wcscpy(fName,name);
	}
	else
		fName = nil;

	IUpdate();
}

//// SetSkin /////////////////////////////////////////////////////////////////

void	pfGUIMenuItem::SetSkin( pfGUISkin *skin, HowToSkin s )
{
	// Just a function wrapper for SendRef
	if( fSkin != nil )
		GetKey()->Release( fSkin->GetKey() );

	if( skin != nil )
		hsgResMgr::ResMgr()->SendRef( skin->GetKey(), TRACKED_NEW plGenRefMsg( GetKey(), plRefMsg::kOnCreate, -1, kRefSkin ), plRefFlags::kActiveRef );

	fHowToSkin = s;

	fSkinBuffersUpdated = false;
}

//// IPostSetUpDynTextMap ////////////////////////////////////////////////////
//	Draw our initial image on the dynTextMap

void	pfGUIMenuItem::IPostSetUpDynTextMap( void )
{
}


//// IGetDesiredExtraDTMRoom /////////////////////////////////////////////////
//	Overridden so we can enlarge our DTMap by 3 vertically, to use the extra
//	space as basically a double buffer for our skinning

void	pfGUIMenuItem::IGrowDTMDimsToDesiredSize( UInt16 &width, UInt16 &height )
{
	height *= 3;
}

//// IUpdateSkinBuffers //////////////////////////////////////////////////////
//	Redraws the double buffers for the two skin images we keep hidden in the
//	DTMap, so we don't have to re-composite them every time we draw the
//	control.

void	pfGUIMenuItem::IUpdateSkinBuffers( void )
{
	if( fSkinBuffersUpdated )
		return;
	if( fSkin == nil )
		return;
	if( fDynTextMap == nil )
		return;
	if( fSkin->GetTexture() == nil )
		return;

	UInt16 y = fDynTextMap->GetVisibleHeight();

	IUpdateSingleSkinBuffer( y, false );
	IUpdateSingleSkinBuffer( y << 1, true );

	fSkinBuffersUpdated = true;
}

//// IUpdateSingleSkinBuffer /////////////////////////////////////////////////
//	Broken down functionality for the above function

void	pfGUIMenuItem::IUpdateSingleSkinBuffer( UInt16 y, hsBool sel )
{
	hsAssert( fSkin != nil && fDynTextMap != nil, "Invalid pointers in IUpdateSingleSkinBuffer()" );


	// Note: add 1 to the visible height so we get enough overlap to take care of mipmapping issues
	UInt16				x = 0, totWidth = fDynTextMap->GetVisibleWidth();
	UInt16				totHeight = y + fDynTextMap->GetVisibleHeight();
	pfGUISkin::pfSRect	element;


	totWidth -= fSkin->GetElement( pfGUISkin::kRightSpan ).fWidth;
	if( fHowToSkin == kTop )
	{
		// Draw up-left corner
		element = fSkin->GetElement( pfGUISkin::kUpLeftCorner );
		fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, element.fWidth, element.fHeight, plDynamicTextMap::kImgSprite );
		x += element.fWidth;

		element = fSkin->GetElement( pfGUISkin::kTopSpan );
		for( ; x < totWidth; )
		{
			UInt16 wid = element.fWidth;
			if( x + wid > totWidth )
				wid = totWidth - x;
			fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, wid, element.fHeight, plDynamicTextMap::kImgSprite );
			x += wid;
		}

		element = fSkin->GetElement( pfGUISkin::kUpRightCorner );
		fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, element.fWidth, element.fHeight, plDynamicTextMap::kImgSprite );

		y += element.fHeight;
	}
	else if( fHowToSkin == kBottom )
	{
		// Clip some space for now
		totHeight -= fSkin->GetElement( pfGUISkin::kLowerLeftCorner ).fHeight;
	}
	
	// Group drawing by skin elements for caching performance
	UInt16 startY = y;
	x = 0;
	element = fSkin->GetElement( pfGUISkin::kLeftSpan );
	for( ; y < totHeight; )
	{
		UInt16 ht = element.fHeight;
		if( y + ht > totHeight )
			ht = totHeight - y;
		fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, element.fWidth, ht, plDynamicTextMap::kImgSprite );
		y += ht;
	}

	x += element.fWidth;
	if( sel )
		element = fSkin->GetElement( pfGUISkin::kSelectedFill );
	else
		element = fSkin->GetElement( pfGUISkin::kMiddleFill );
	for( ; x < totWidth; )
	{
		UInt16 wid = element.fWidth;
		if( x + wid > totWidth )
			wid = totWidth - x;

		for( y = startY; y < totHeight; )
		{
			UInt16 ht = element.fHeight;
			if( y + ht > totHeight )
				ht = totHeight - y;
			fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, wid, ht, plDynamicTextMap::kImgSprite );
			y += ht;
		}

		x += wid;
	}

	element = fSkin->GetElement( pfGUISkin::kRightSpan );
	for( y = startY; y < totHeight; )
	{
		UInt16 ht = element.fHeight;
		if( y + ht > totHeight )
			ht = totHeight - y;
		fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, element.fWidth, ht, plDynamicTextMap::kImgSprite );
		y += ht;
	}

	if( fHowToSkin == kBottom )
	{
		x = 0;

		// Draw lower-left corner
		element = fSkin->GetElement( pfGUISkin::kLowerLeftCorner );
		fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, element.fWidth, element.fHeight, plDynamicTextMap::kImgSprite );
		x += element.fWidth;

		element = fSkin->GetElement( pfGUISkin::kBottomSpan );
		for( ; x < totWidth; )
		{
			UInt16 wid = element.fWidth;
			if( x + wid > totWidth )
				wid = totWidth - x;
			fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, wid, element.fHeight, plDynamicTextMap::kImgSprite );
			x += wid;
		}

		element = fSkin->GetElement( pfGUISkin::kLowerRightCorner );
		fDynTextMap->DrawClippedImage( x, y, fSkin->GetTexture(), element.fX, element.fY, element.fWidth, element.fHeight, plDynamicTextMap::kImgSprite );

		y += element.fHeight;
	}
}

//// IUpdate /////////////////////////////////////////////////////////////////

void	pfGUIMenuItem::IUpdate( void )
{
	if( fDynTextMap == nil )
		return;

	if( fSkin != nil )
	{
		IUpdateSkinBuffers();

		if( !fSkinBuffersUpdated )
			return;

		// Copy now from our skin buffer, plus set our text color
		UInt16 y = fDynTextMap->GetVisibleHeight();

		if( IsInteresting() )
		{
			fDynTextMap->DrawClippedImage( 0, 0, fDynTextMap, 0, y << 1, fDynTextMap->GetVisibleWidth(), y, plDynamicTextMap::kImgSprite );
			fDynTextMap->SetTextColor( GetColorScheme()->fSelForeColor );
		}
		else
		{
			fDynTextMap->DrawClippedImage( 0, 0, fDynTextMap, 0, y, fDynTextMap->GetVisibleWidth(), y, plDynamicTextMap::kImgSprite );
			fDynTextMap->SetTextColor( GetColorScheme()->fForeColor );
		}
	}
	else
	{
		if( IsInteresting() )
		{
			fDynTextMap->ClearToColor( GetColorScheme()->fSelBackColor );
			fDynTextMap->SetTextColor( GetColorScheme()->fSelForeColor );
		}
		else
		{
			fDynTextMap->ClearToColor( GetColorScheme()->fBackColor );
			fDynTextMap->SetTextColor( GetColorScheme()->fForeColor );
		}
	}

	fDynTextMap->SetJustify( plDynamicTextMap::kLeftJustify );

	if( fName != nil )
	{
		UInt16 ht;
		fDynTextMap->CalcStringWidth( fName, &ht );

		Int16 x = 0, y = ( fDynTextMap->GetVisibleHeight() - ht ) >> 1;
		if( fHowToSkin == kTop && fSkin != nil )
			y += fSkin->GetElement( pfGUISkin::kTopSpan ).fHeight >> 1;
		else if( fHowToSkin == kBottom && fSkin != nil )
			y -= fSkin->GetElement( pfGUISkin::kTopSpan ).fHeight >> 1;
		
		if( fSkin != nil )
			x += fSkin->GetBorderMargin();

		if( fClicking )
		{
			x += 2;
			y += 2;
		}

		fDynTextMap->DrawClippedString( x, y, fName, fDynTextMap->GetVisibleWidth(), fDynTextMap->GetVisibleHeight() );

		if( HasFlag( kDrawSubMenuArrow ) )
		{
			if( fSkin != nil )
			{
				pfGUISkin::pfSRect element;

				if( IsInteresting() )
					element = fSkin->GetElement( pfGUISkin::kSelectedSubMenuArrow );
				else
					element = fSkin->GetElement( pfGUISkin::kSubMenuArrow );

				y += ( ht >> 1 ) - ( element.fHeight >> 1 );
				if( y < 0 || y + element.fHeight >= fDynTextMap->GetHeight() )
					y = 0;

				fDynTextMap->DrawClippedImage( x + fDynTextMap->GetVisibleWidth() - 2 - element.fWidth
												- fSkin->GetElement( pfGUISkin::kRightSpan ).fWidth, 
												y,
												fSkin->GetTexture(), element.fX, element.fY, element.fWidth, element.fHeight, plDynamicTextMap::kImgBlend );
			}
			else
			{
				fDynTextMap->SetJustify( plDynamicTextMap::kRightJustify );
				fDynTextMap->DrawString( x + fDynTextMap->GetVisibleWidth() - 2, y, ">>" );
			}
		}
	}

	fDynTextMap->FlushToHost();
}

void pfGUIMenuItem::PurgeDynaTextMapImage()
{
	if ( fDynTextMap != nil )
		fDynTextMap->PurgeImage();
}

//// GetTextExtents //////////////////////////////////////////////////////////
//	Calculate the size of the drawn text.

void	pfGUIMenuItem::GetTextExtents( UInt16 &width, UInt16 &height )
{
	if( fName == nil )
		width = height = 0;
	else
		width = fDynTextMap->CalcStringWidth( fName, &height );
}

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

hsBool	pfGUIMenuItem::MsgReceive( plMessage *msg )
{
	return pfGUIButtonMod::MsgReceive( msg );
}

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

void	pfGUIMenuItem::Read( hsStream *s, hsResMgr *mgr )
{
	pfGUIButtonMod::Read( s, mgr );
}

void	pfGUIMenuItem::Write( hsStream *s, hsResMgr *mgr )
{
	pfGUIButtonMod::Write( s, mgr );
}

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

void	pfGUIMenuItem::HandleMouseDown( hsPoint3 &mousePt, UInt8 modifiers )
{
	pfGUIButtonMod::HandleMouseDown( mousePt, modifiers );
	IUpdate();
}

void	pfGUIMenuItem::HandleMouseUp( hsPoint3 &mousePt, UInt8 modifiers )
{
	pfGUIButtonMod::HandleMouseUp( mousePt, modifiers );
	IUpdate();
}

void	pfGUIMenuItem::HandleMouseDrag( hsPoint3 &mousePt, UInt8 modifiers )
{
/*	if( !fClicking )
		return;

	if( fDraggable == nil )
		return;

	if( !fDraggable->IsVisible() )
	{
		// Are we outside ourselves?
		if( !PointInBounds( mousePt ) )
		{
			// Yes, start dragging
			StartDragging();

			// Hand off our interest to the draggable
			fDialog->SetControlOfInterest( fDraggable );
		}
	}
*/
	pfGUIButtonMod::HandleMouseDrag( mousePt, modifiers );
}

void	pfGUIMenuItem::HandleMouseHover( hsPoint3 &mousePt, UInt8 modifiers )
{
	pfGUIButtonMod::HandleMouseHover( mousePt, modifiers );
	if( HasFlag( kReportHovers ) )
	{
		if( PointInBounds( mousePt ) )
		{
			if( !fReportingHover && ( fDialog->GetControlOfInterest() == nil || 
									  fDialog->GetControlOfInterest() == this ) )
			{
				fReportingHover = true;
				HandleExtendedEvent( kMouseHover );
				fDialog->SetControlOfInterest( this );
			}
		}
		else if( fReportingHover )
		{
			fReportingHover = false;
			HandleExtendedEvent( kMouseExit );
			fDialog->SetControlOfInterest( nil );
		}
	}
}

//// SetInteresting //////////////////////////////////////////////////////////
//	Overridden to play mouse over animation when we're interesting

void	pfGUIMenuItem::SetInteresting( hsBool i )
{
	pfGUIButtonMod::SetInteresting( i );
	IUpdate();

	// Make sure we're not still thinking we're reporting hovers when we're not
	if( !i )
		fReportingHover = false;
}