/*==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/>.

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;
}